KR101437642B1

KR101437642B1 - Tray feeder

Info

Publication number: KR101437642B1
Application number: KR1020140062931A
Authority: KR
Inventors: 황만수
Original assignee: (주)엠엑스앤
Priority date: 2014-05-26
Filing date: 2014-05-26
Publication date: 2014-09-16

Abstract

The present invention relates to a tray feeder including a belt conveyer horizontally installed; a tray pull-out unit for supporting a plurality of stacked empty trays from the top of the belt conveyer to be spaced apart from each other, and for seating the empty tray on the belt conveyer from the stacked empty trays one by one at an time interval; a first tray vertical-transfer unit for vertically transferring each empty tray, which is seated and transferred on the belt conveyer by the tray pull-out unit, in order, in which the empty tray is stopped for a time required to seat a component at a work position; and a tray stacking unit for receiving and stacking each tray, on which the component is seated, from the first tray vertical-transfer unit, and horizontally transferring the trays to unload the predetermined number of the trays on which the component is seated. The tray feeder can be used in connection with various transfer robots for seating components on the tray, and many trays can be continuously supplied to the work position where the component is seated. The loading and unloading of the tray are stably performed, and the work space can be effectively used.

Description

Tray feeder

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tray feeder, and more particularly, to a tray feeder that can be used in conjunction with various conveying robots for placing parts on a tray, and efficiently and stably loading and unloading trays.

In general, components such as a battery or a display panel (hereinafter referred to as a " component ") as well as components such as a cellular phone case are transported in a state of being seated in a tray to prevent transportation efficiency and component damage .

Such a tray is set by the transfer robot to a predetermined number of parts on the inner side, and is transported to a predetermined position by the tray transfer device.

A conventional tray transfer device is disclosed in Korean Utility Model No. 20-1995-0005847 entitled " Tray Transfer Device of Automatic Part Sorting and Feeding Device ", which is integrally installed in a supply field and is provided with a tray transfer means A carrier structure for transferring empty trays drawn from the assembling apparatus to a driving source of the air cylinder; a tray for feeding the tray by transporting the tray by stocking the empty tray transferred from the carrier and operating the air cylinder; A tray holder for transferring the yarn from the vibrating part to the vibrating part by the operation of the air cylinder, and a discharge tray for transferring the yarn tray from which the parts are aligned to the assembling device.

However, such conventional tray transfer apparatuses are unsuitable for reliable loading and unloading of a large number of trays up to the work position for placing parts by the transfer robot, It is difficult to use them in conjunction with each other.

In order to solve the problems of the prior art as described above, the present invention can be used in conjunction with various transport robots for placing parts on a tray, and a large number of trays are continuously supplied to a work position for placing parts And an object of the present invention is to provide efficient and stable loading and unloading of such a tray.

Other objects of the present invention will become readily apparent from the following description of the embodiments.

According to an aspect of the present invention, there is provided a tray feeder for loading a blank tray into a work position in which a plurality of components are placed by a transfer robot, the tray feeder comprising: a horizontally installed belt conveyor; A tray drawer for supporting a plurality of empty trays spaced apart from the upper side of the belt conveyor so as to be spaced apart and placing empty trays from a plurality of stacked empty trays one by one at a time interval on the belt conveyor; A first tray vertical conveying unit for vertically conveying each empty tray conveyed by the tray pull-out unit to the conveyor, the empty tray being stopped for a time required for placing a part at the work position; And a tray stacking part for horizontally conveying the plurality of stacked component receiving trays in order to unload the plurality of component stacking trays by sequentially receiving the trays on which the components are placed from the first tray vertical conveying part, Is provided.

Wherein the belt conveyor is orbital moved by a first driving motor and a pair of first conveyance belts provided from a front end of the tray withdrawing portion to a rear end of the first tray vertical conveying portion, Tray vertical conveyance can be installed.

The tray withdrawing portion includes a first support portion, which is located between the first conveyance belts and has a plurality of stacked empty trays, the first support plate supporting a portion of the bottom surface except for both edges thereof, the first support plate being lifted and lowered by the first cylinder; And a first gripper which horizontally moves by a second cylinder each of a pair of first fingers which are respectively disposed to be opposed to each other on both sides of the first conveyance belt with the first support portion interposed therebetween, Wherein each of the fingers horizontally moves toward each other by the second cylinder to support both side bottom surfaces of the empty tray positioned on the upper side of the lowermost empty tray among the plurality of empty trays stacked on the first support plate, The first support plate may be lowered by the first cylinder so that both side edges of the lowermost empty tray are placed on the first conveyance belt.

The first tray vertical conveying part is configured such that the second support plate located below the first conveyance belts is lifted by the third cylinder from the lower side of the empty tray conveyed by the first conveyance belt, Position.

The first tray vertical transfer unit may include a rotation driving unit for rotating the second support plate between the second support plate and the third cylinder.

A third support plate supporting a portion of the bottom of the empty tray stacked on the plurality of stacked tray trays except the opposite side edges thereof for vertically moving the empty tray stacked in the tray drawer by the fourth cylinder At least one tray receiving portion; And a pair of second conveyance belts for supporting both side edges of the bottom surface of the empty tray stacked by a plurality of stacked members by the fourth support plate are orbited by the second drive motor, And an additional belt conveyor for conveying the empty tray to the first conveyance belt.

Wherein the tray stacking portion includes a pair of support posts positioned so as to be opposed to each other below the component placement tray raised by the vertical tray of the first tray are positioned at both edges of the bottom surface of the component placement tray lowered by the vertical tray, A tray horizontal conveying unit for horizontally moving along the first linear motion guide by driving the first linear motor; A second support part installed on a conveying path of the support and lifting up and down by a fifth cylinder, the fourth support plate supporting a part of the component receiving tray except the side edges at the bottom of the component mounting tray from the support; A pair of second fingers respectively installed on opposite sides of the fourth support plate are respectively moved in the horizontal and vertical directions by the sixth and seventh cylinders and are supported on the fourth support plate, A second gripper for supporting a plurality of component seating trays together with the second support portion; And a gripper horizontal transferring unit for horizontally moving the gripper transferring member on which the second gripper is installed by driving the second linear motor along the second linear motion guide.

Wherein the tray horizontal conveying section includes first and second support rods each of which is arranged in the forward and backward directions along the moving direction of the component placement tray, and the tray stacking section includes a pair of third Each of the fingers is horizontally and vertically moved by the eighth and ninth cylinders so that the component mounting tray positioned on the first support is moved onto the second support when the support is moved, And a third gripper for supporting the tray to support the second support portion.

A second tray vertical feeding part for vertically moving the component placing tray, which is received by the fifth supporting plate, descends by the tenth cylinder and vertically moves to the unloading position, Wherein the belt conveyor and the tray drawer are installed at a lower end of the frame and the first tray vertical conveying portion is installed at one side of the frame to convey the empty tray from the lower end of the frame to the upper working position, Wherein the tray stacking portion is stacked on the belt conveyor and the tray drawer by being installed at an upper end of the frame, and the second tray vertical conveying portion is stacked in a plurality of layers from the upper end of the frame to the lower unloading position And may be installed on the other side of the frame so as to transfer the component mounting tray.

The tray feeder according to the present invention can be used in conjunction with various conveying robots for placing parts on a tray and is capable of continuously feeding a large number of trays to a working position for placing parts, The loading can be efficiently and stably performed, and the work space can be efficiently used.

1 is a perspective view illustrating a use of a tray feeder according to an embodiment of the present invention.
2 is a perspective view illustrating a tray feeder according to one embodiment of the present invention.
3 is a perspective view illustrating a bottom structure of a tray feeder according to an embodiment of the present invention.
Fig. 4 is an enlarged perspective view of part A of Fig. 3; Fig.
5 is an enlarged perspective view of the portion B in Fig.
Fig. 6 is an enlarged perspective view of part C of Fig. 3; Fig.
7 is a perspective view illustrating an upper structure of a tray feeder according to an embodiment of the present invention.
Fig. 8 is an enlarged perspective view of part D in Fig. 7; Fig.
Fig. 9 is an enlarged perspective view of part E in Fig. 7; Fig.
10 is a schematic view for explaining the operation of the tray feeder according to one embodiment of the present invention.

The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated and described in detail in the drawings. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but is to be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention, And the scope of the present invention is not limited to the following examples.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings, wherein like or corresponding elements are denoted by the same reference numerals, and redundant explanations thereof will be omitted.

FIG. 1 is a perspective view illustrating a use of a tray feeder according to an embodiment of the present invention, and FIG. 2 is a perspective view illustrating a tray feeder according to an embodiment of the present invention.

1 and 2, a tray feeder 1 according to an embodiment of the present invention includes a belt conveyor 100, a tray outlet 200, a first tray vertical conveyor 300, and a tray stacker 400 ).

The tray conveyor 100 and the tray drawer 200 may be installed at the lower end of the frame 900 and the first tray vertical conveyance unit 300 may be installed at the lower end of the frame 900. [ May be installed on one side of the frame 900 to transfer the empty tray 10 from the lower end of the frame 900 to the upper working position and the tray stacking part 400 may be installed on the upper end of the frame 900 The second tray vertical transfer unit 700 to be described later can be stacked on the belt conveyor 100 and the tray drawer 200 and the plurality of parts stacked from the upper end of the frame 900 to the lower unloading position And may be installed on the other side of the frame 900 to convey the mounting tray 20. The arrangement structure of these structures and the conveyance path of the trays 10 and 20 are only one example of application of a multi-layer structure for efficient use of a work space and compactness of the apparatus, and may have various other examples.

The tray feeder 1 according to one embodiment of the present invention includes, for example, a case in which a case constituting an appearance of a part, for example, a cellular phone, is mounted on each of the seating grooves 11 formed in the empty tray 10, But is not limited thereto and can be used to seat various parts in the tray 10 by various devices. Here, the part means an object to be placed on the tray 10, and various parts of the product as well as the parts such as the injection molding of the mobile phone, the case and the like may be applicable, and this may be used to mean a product.

The frame 900 may include an input unit 810 for inputting operations or data to the tray feeder 1 and may include a controller 820 for performing a signal input by the input unit 810 or a preset process, And a display unit (not shown) for confirming the operation state and input or output data may be installed. The controller 820 receives signals from various sensors (not shown) including the various sensors 830, 840, 860, and 870 shown in FIGS. 4, 5, and 7 and receives signals from the tray feeder 1 To perform operations necessary for loading and unloading the trays 10 and 20 and controlling the driving means of each constituent device such as a cylinder or a motor.

3 and 4, the belt conveyor 100 is horizontally installed so as to reach below the working position where a plurality of components are placed by the transfer robot. For example, the front end of the tray draw- A pair of first conveyance belts 110 installed up to the rear end of the first tray vertical conveyance unit 300 are orbital moved by the first drive motor 120 and the first conveyance belt 110 A tray vertical transfer unit 300 may be installed. The pair of conveyance belts 110 are arranged to be spaced apart from each other by a plurality of pulleys 111 and to orbit the pulleys 111 by transmitting the rotational force of the first driving motor 120 to one of the pulleys 111. Further, the first conveyance belt 110 may be installed horizontally with a guide plate 130 on the bottom surface of the upper conveyance belt 110 to prevent sagging of the empty tray.

The tray drawer 200 supports a plurality of empty trays from the upper side of the belt conveyor 100 so as to be spaced apart from each other and seats an empty tray from a plurality of stacked empty trays one by one at a time interval on the belt conveyor 100 .

The tray withdrawing portion 200 includes a first support plate 211 which is positioned between the first conveyance belts 110 and supports a plurality of stacked empty trays except for both side edges thereof, And a pair of first fingers 221 provided on both sides of the first conveyance belt 110 so as to be opposed to each other with the first support portion 210 interposed therebetween, And may include a first gripper 220 that horizontally moves by the cylinder 222. Accordingly, the first fingers 221 are horizontally moved toward each other by the second cylinder 222, so that the empty fingers of the empty tray positioned directly above the lowermost empty tray among the plurality of empty trays stacked on the first support plate 211 The first support plate 211 is lowered by the first cylinder 212 so that both side edges of the empty tray of the lowermost stage are placed on the first conveyance belt 110, 211 from the bottom to be transferred to the first tray vertical conveyance unit 300 through the first conveyance belt 110. [

The first support plate 210 may be slidably coupled to the first guide 213 vertically installed to guide the vertical movement. The first cylinder 212 may be a pneumatic cylinder, for example, and may be applied to all of the following cylinders. A hydraulic cylinder may be used instead of the pneumatic cylinder.

The first tray vertical transfer unit 300 vertically transfers each of the empty trays conveyed vertically by the tray take-out unit 200 to the belt conveyor 100, Stop.

The first tray vertical conveyance unit 300 includes a first conveyance belt 110 and a second conveyance belt 110. The first tray vertical conveyance unit 300 includes a first conveyance belt 110 and a second conveyance belt 110, By raising by the cylinder 320, the empty tray can be transferred to the working position, for example, to the upper end where the part is supplied by the transfer arm of the transfer robot. Here, the second support plate 310 may protrude upward at one side edge of the latching portion 311 to catch the empty tray when the empty tray reaches the upper side so that the empty tray does not fall down along the first conveyance belt 110 And extended portions 312 may be provided to extend the bottom support region of the empty tray on both sides. The piston rod 321 of the third cylinder 320 may be vertically connected to the bottom surface of the second support plate 310 and may be slidably coupled to a second guide 340 vertically installed for a stable up / .

The first tray vertical transfer unit 300 includes a second support plate 310 and a third cylinder 320 for rotation between the upper position of the empty tray and the position where the component is seated in the empty tray depending on the position of the transfer robot, A rotation driving unit 330 using a driving means such as a motor or a cylinder for rotating the second support plate 310 may be installed.

3 and 5, the empty tray can be placed in wait for the component placing operation, and the tray receiving portion 500 and the additional belt conveyor (600) may be provided.

The tray holding part 500 may be formed of at least one tray holding part 500. The tray holding part 500 may include a plurality of stacked empty trays, The second cylinder 510 is provided so as to be raised and lowered by the fourth cylinder 520, and in this embodiment, it is formed of two cylinders. The third support plate 510 may be slidably coupled to the third guide 530 vertically installed for stable up and down movement. Therefore, when all the empty trays are drawn out to the tray withdrawal portion 200, the third support plate 510 moves the empty tray of the multiple stacks supported on the upper surface by the operation of the fourth cylinder 520 to the second conveyance belt So that the empty trays of a plurality of stacked layers are transported to the upper side of the first support plate 211 through the second conveyance belt 610 and the first conveyance belt 110.

The additional belt conveyor 600 is installed to be in line with the belt conveyor 100 and the third support plate 510 is lowered by the fourth cylinder 520 to support the edges of the bottom surface of the empty tray The pair of second conveyance belts 610 are orbital moved by the second drive motor 620 to transfer a plurality of stacked empty trays to the first conveyance belt 110. Further, the second conveyance belt 610 may be provided with a guide plate 630 on the bottom surface thereof to prevent sagging due to a load of a plurality of stacked empty trays.

Referring to FIGS. 4 and 5, first and second detection sensors (not shown) for detecting a blank tray at a position for decelerating the conveying speed of the empty tray and a position for stopping the empty tray, 830, and 840 may be installed in a plurality of empty trays. Further, a sensing sensor may be installed at an appropriate position for detecting the loading of the empty tray and for detecting empty trays at other necessary positions.

Referring to FIG. 7, the tray stacking unit 400 sequentially receives the trays on which the components are placed from the first tray vertical transfer unit 300, stacks the trays in a plurality of stacks, unloads the predetermined number of stacked component stacking trays To be transported horizontally. The tray stacking part 400 may include a tray horizontal conveying part 410, a second supporting part 420, a second gripper 430 and a gripper horizontal conveying part 440, for example.

The tray horizontal transfer unit 410 includes a pair of support tables 411 positioned to face each other on the lower side of the tray on which the components are loaded from the transfer robot, that is, the component mounting tray raised by the first tray vertical transfer unit 300, The support base 411 can support both side edges of the bottom surface of the component placement tray descending by the first tray vertical conveyance unit 300 and the support base 411 can support the edge of the bottom side of the component placement tray 300 by the first linear motion guide (412). The support base 411 reciprocates along the first linear motion guide 412 between the lower side of the second support plate 310 and the second support portion 420 by the driving of the first linear motor.

The second support portion 420 is installed in the conveying path of the support table 411 and a fourth support plate 421 for supporting a portion of the component placement tray 4 except for both side edge portions of the bottom surface from the support table 411 is supported by the fifth cylinder 422 As shown in Fig. The fourth support plate 421 is lifted upward from the lower side between the supports 411 by the fifth cylinder 422 to receive the component mounting tray on the support table 411. The fourth support plate 421 may be slidably coupled to a fourth guide (not shown) installed vertically so as to stably ascend and descend.

7 and 8, the second gripper 430 includes a pair of second fingers 431, which are respectively installed on opposite sides of the fourth support plate 421 so as to be opposed to each other. The second and fourth fingers 431, To support both sides of the component placement tray supported on the fourth support plate 421 so that a plurality of component placement trays are stacked together with the second support portion 420. [

The second gripper 430 is installed in a sixth cylinder 432 which operates horizontally and the sixth cylinder 432 is installed in a vertically operating seventh cylinder 433. Accordingly, each of the second fingers 431 is horizontally moved, lowered, moved horizontally in the vicinity of each other in the spacing direction by the operation of the sixth and seventh cylinders 432 and 433, The tray is lifted and moved horizontally, downward, and horizontally in the direction close to each other in the spacing direction by the operation of the sixth and seventh cylinders 432 and 433, thereby moving the component mounting tray placed on the fourth support plate 421 The part mounting tray on which the component mounting tray is lifted is lifted up and the component mounting tray stacked on the fourth support plate 421 is lifted up and the component mounting tray is stacked by a predetermined number of times.

The gripper horizontal transfer unit 440 transfers the gripper transfer member 441 on which the pair of second grippers 430 are installed to a horizontal position along the second linear motion guide 442 by driving a second linear motor The second gripper 430 transports the stacked component placing tray in the horizontal direction for unloading the predetermined number of stacked component placing trays.

Meanwhile, the tray horizontal conveying unit 410 may include first and second support rods 411a and 411b, which are respectively arranged forward and backward along the moving direction of the component receiving tray. The first and second support rods 411a and 411b may be formed with grooves 411c and 411d so as to avoid interference with the second support plate 310 and the like and may be connected to each other by a first connection member 411e 411h can be connected by the first and second supporting legs 411a, 411b and the second connecting member 411f facing each other, and locking projections 411g, 411h are provided on both sides of the tray so as to restrain the separation of the component receiving tray .

7 and 9, the tray stacking unit 400 includes a pair of third fingers 451 on both sides of the movement path of the support 411, and each of the third fingers 451 is horizontally The component placing tray on the first supporting table 411a is moved to the position on the second supporting table 411b so that the component placing tray on the second supporting table 411b is moved And a third gripper 450 for supporting the first and second support portions 420. The third finger 451 is moved in the same direction as the second finger 431 by the operation of the eighth and ninth cylinders 452 and 453 to move the first support 411a horizontally moved from the second support plate 310, When the first support table 411a moves again and the second support table 411b is positioned below the second support plate 310 when the first support table 411a is positioned below the second support plate 310, . When the first support table 411a horizontally moved from the second support plate 310 reaches the lower side of the third gripper 450, the component placement tray on the second support table 411b is positioned on the fourth support plate 421 So that the component mounting tray can be transferred to the fourth support plate 421.

3 and 6, the second tray vertical transfer unit 700 includes a plurality of component mounting trays stacked from a second gripper 430, which is moved by the gripper horizontal transfer unit 440, to a fifth support plate 710 And can be moved downward by the tenth cylinder 720 to be vertically moved onto the unloading position, for example, on the additional belt conveyor 600. [ The fifth support plate 710 may be provided with a latching portion 711 for supporting the edge of the tray so that a plurality of component mounting trays are not slipped and the bottom surface is fixed to the piston rod 721 of the tenth cylinder 720 And can be slidably coupled to a fifth guide 730 vertically installed in a large number for stable up and down movement.

Referring to FIG. 7, when the sensing pieces 850 installed on the support 411 and the second gripper 430 are respectively positioned at both ends of a predetermined movement path, first and second limit sensors 860 and 870 can be installed on one side of the movement path of the support base 411 and on one side of the movement path of the second gripper 430, respectively.

Referring to FIG. 10, as described in detail above, a plurality of stacked empty trays 10 are accommodated in a third support plate 510, and the second conveyance belt 610 and the first conveyance belt 110 The empty tray 10 at the lowermost end is moved up to the working position by the second supporting plate 310 by the operation of the first supporting plate 211 and the first finger 221 A plurality of parts are seated by the transfer robot and the tray 20 on which the predetermined number of parts are seated is supported by the support frame 411, the third finger 451, the fourth support plate 421 and the second finger 431 And is unloaded through the second finger 431 and the fifth support plate 710 in a stacked state.

Although the present invention has been described with reference to the accompanying drawings, it is to be understood that various changes and modifications may be made without departing from the spirit of the invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

10: empty tray 11: seat groove
20: Parts mounting tray 100: Belt conveyor
110: first conveyance belt 111: pulley
120: first drive motor 130: guide plate
200: a tray drawer 210: a first support
211: first support plate 212: first cylinder
213: first guide 220: first gripper
221: first finger 222: second cylinder
300: first tray vertical transfer part 310: second support plate
311: Retaining part 312: Extension part
320: Third cylinder 321: Piston rod
330: rotation driving part 340: second guide
400: tray stacking part 410: tray horizontal conveyance
411: Support base 411a: First support base
411b: second support rods 411c, 411d:
411e: first connecting member 411f: second connecting member
411g, 411h: a locking protrusion 412: a first linear motion guide
420: second support portion 421: fourth support plate
422: fifth cylinder 430: second gripper
431: second finger 432: sixth cylinder
433: seventh cylinder 440: gripper horizontal transmission
441: gripper transfer member 442: second linear motion guide
450: third gripper 451: third finger
452: Eighth cylinder 453: Ninth cylinder
500: tray receiving part 510: third supporting plate
520: fourth cylinder 530: third guide
600: additional belt conveyor 610: second conveying belt
620: second drive motor 630: guide plate
700: second tray vertical transfer part 710: fifth support plate
711: Retaining part 720: Tenth cylinder
721: piston rod 730: fifth guide
810: input unit 820: controller
830: first sensing sensor 840: second sensing sensor
850: Detection piece 860: 1st limit sensor
870: second limit sensor 900: frame

Claims

1. A tray feeder for loading an empty tray into a working position where a plurality of parts are placed by a transfer robot,
A horizontally installed belt conveyor;
A tray drawer for supporting a plurality of empty trays spaced apart from the upper side of the belt conveyor so as to be spaced apart and placing empty trays from a plurality of stacked empty trays one by one at a time interval on the belt conveyor;
A first tray vertical conveying unit for vertically conveying each empty tray conveyed by the tray pull-out unit to the conveyor, the empty tray being stopped for a time required for placing a part at the work position; And
And a tray stacking part for horizontally conveying the plurality of trays on which the parts are mounted from the first tray vertical conveying part to sequentially stack the plurality of trays and unload the tray stacked in a predetermined number,
Wherein the tray-
A pair of support bars positioned opposite to each other on the lower side of the component placement tray raised by the vertical conveyance of the first tray respectively support the bottom edges of the bottom surface of the component placement tray lowered by the first tray vertical conveying portion, A tray horizontal conveying unit in which the support is horizontally moved along the first linear motion guide by driving of the first linear motor;
A second support part installed on a conveying path of the support and lifting up and down by a fifth cylinder, the fourth support plate supporting a part of the component receiving tray except the side edges at the bottom of the component mounting tray from the support;
A pair of second fingers respectively installed on opposite sides of the fourth support plate are respectively moved in the horizontal and vertical directions by the sixth and seventh cylinders and are supported on the fourth support plate, A second gripper for supporting a plurality of component seating trays together with the second support portion; And
A gripper horizontal conveying unit for horizontally moving the gripper conveying member on which the second gripper is installed by driving the second linear motor along the second linear motion guide;
And a tray feeder.

The method according to claim 1,
The belt conveyor includes:
A pair of first conveyance belts provided from the front end of the tray pull-out section to the rear end of the first tray vertical conveyance section are orbital moved by the first drive motor, and the first tray vertical conveyance section A tray feeder.

The method of claim 2,
The tray draw-
A first support portion which is located between the first conveyance belts and which has a plurality of stacked empty trays, the first support plate supporting a portion of the bottom surface except for both side edges, the first support plate being lifted and lowered by the first cylinder; And
And a first gripper horizontally moving a pair of first fingers, each of the first fingers being opposed to each other on both sides of the first conveying belt with the first support portion interposed therebetween, by the second cylinder,
Wherein each of the first fingers horizontally moves toward each other by the second cylinder to support both the bottom side of the empty tray located on the uppermost of the lowermost empty tray among the plurality of empty trays stacked on the first supporting plate The first support plate is lowered by the first cylinder so that both side edges of the lowermost empty tray are placed on the first conveyance belt.

The method of claim 2,
Wherein the first tray vertical transfer unit comprises:
And a second support plate located on the lower side between the first conveyance belts is raised by a third cylinder below the empty tray conveyed by the first conveyance belt to convey the empty tray to the working position.

The method of claim 4,
Wherein the first tray vertical transfer unit comprises:
And a rotation driving unit for rotating the second support plate is provided between the second support plate and the third cylinder.

The method according to any one of claims 2 to 5,
A third support plate supporting a portion of the bottom of the empty tray stacked on the plurality of stacked tray trays except the opposite side edges thereof for vertically moving the empty tray stacked in the tray drawer by the fourth cylinder At least one tray receiving portion; And
The pair of second conveyance belts supporting the both side edges of the bottom surface of the empty tray stacked in a large number by the descending of the third support plate by the fourth cylinder are orbital motion by the second drive motor, Further comprising: an additional belt conveyor for transferring the tray to the first conveyance belt.

delete

The method according to claim 1,
The tray horizontal conveying unit includes:
Wherein the support rods are composed of first and second support rods arranged in the forward and backward directions along the moving direction of the component placement tray,
Wherein the tray-
Each of the pair of third fingers is horizontally and vertically moved by the eighth and ninth cylinders on both sides of the movement path of the support so that the component placement tray positioned on the first support when the support is moved, Further comprising a third gripper for positioning the component receiving tray on the second support to support the second support portion.

The method according to claim 1,
A second tray vertical feeding part for vertically moving the component placing tray, which is received by the fifth supporting plate, descends by the tenth cylinder and vertically moves to the unloading position, Including,
Wherein the belt conveyor and the tray draw-
A lower frame,
Wherein the first tray vertical transfer unit comprises:
The frame being installed on one side of the frame so as to transfer the empty tray from the lower end of the frame to the upper working position,
Wherein the tray-
A belt conveyor disposed on an upper end of the frame and stacked on the tray drawer,
Wherein the second tray vertical transfer unit comprises:
And a plurality of component mounting trays stacked from a top end of the frame to an unloading position at a bottom end of the frame.