KR100647961B1 - Apparatus for transportation of pallet - Google Patents

Abstract

An apparatus for transportation of a pallet is provided to prevent a failure and reduce the fatigue of equipment by preventing repulsive power generated in transfer equipment from being transmitted to a transfer motor. In an apparatus for transportation of a pallet, an arm base(30) withdraws and carries in the pallets. A support link induces an unclamp motion of the arm base. The arm base includes an arm body(100) having a concave shape, a plurality of arms(110a,110b) covering the concave part of the arm body, a plurality of hanging roller guides(120a,120b) contacting with the support link and starting unclamp of the arms, and a plurality of translation rollers(114a,114b) for opening the arms. And the support link includes a pair of hanging parts rotated by a support link bearing and a pair of hanging rollers for rotating by the translation rollers of the arm base.

Description

Pallet transport device {Apparatus for Transportation of Pallet}

1 is a perspective view of a component supply apparatus to which the present invention is applied;

2 is a structural diagram of an arm base included in a pallet conveying apparatus according to the present invention;

3 is a structural diagram of an auxiliary link included in a pallet transport apparatus according to the present invention;

4 is a structural diagram of a pallet applied to the present invention;

5 is a layout view of the pallet transfer apparatus according to the present invention,

6a to 6e are diagrams for explaining the principle of the un-clamp of the pallet transfer apparatus according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: parts supply device 20: pallet

30: arm base 40: auxiliary link

100: arm body 110a, 110b: arm

112a, 112b: clamp roller 114a, 114b: translation roller

116a, 116b: arm bearing 118a, 118b: restoring bar

120a, 120b: locking roller guide 122a, 122b: locking jaw

200a, 200b: Jam piece 210a, 210b: Jam roller

220a, 220b: auxiliary link bearing 230a, 230b: auxiliary link body

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet conveying apparatus, and more particularly, to a pallet conveying apparatus for drawing out and carrying in a pallet loaded with a plurality of parts and mounted on a component supply apparatus.

In general, in order to mount an electronic component such as a semiconductor chip on a printed circuit board, a pallet on which the component is mounted is loaded in a component supply device, and the pallet is sequentially taken out and moved to a designated position so that the component mounter absorbs the component and prints it. It is transported to a designated position on a circuit board and mounted.

1 is a perspective view of a component supply apparatus to which the present invention is applied.

As shown, the component supply apparatus includes a magazine 14 on which a plurality of pallets are loaded and a conveying part 18 on which the pallets loaded on the magazine 14 are withdrawn, and the magazine 14 is driven by an elevator 12. The elevator 12 is driven by the motor 16.

The elevator 12 is raised or lowered by the motor 16 so that the pallet to be withdrawn is positioned toward the outlet of the magazine 14, and the pallet is withdrawn along the conveying unit 18 by the conveying device. The component mounter absorbs the components from the drawn pallet and mounts them on the printed circuit board. When all the components mounted on the pallet are exhausted, the transfer device brings the pallet back into the magazine 14. Then, another pallet guided by the elevator 12 is withdrawn again and the above process is repeated.

Currently, in such a part supply device, a method of clamping and transporting a pallet by directly applying power to the transport device is used to prevent a collision between the pallet and the pallet transport device when the elevator 12 is moved. In addition, since a separate power source is used, there is a problem that the operation speed is slow and causes a failure or malfunction depending on the life of the cylinder driving the transfer device.

Another method for conveying pallets is to implement the pallet conveying device in a double slide structure, which omits a separate power source for the pallet conveying device, but adds additional accessories such as slides to the conveying device body to complicate the driving unit. And there is a disadvantage that it is difficult to apply in a narrow space due to the increase in size, there is a problem that the load is transferred to the motor side in the un-clamp state to increase the fatigue of the motor.

Another pallet transfer method is a constant arm fastening method. This method drives an elevator while the transfer device clamps the pallet, and the clearance between the transfer device and the pallet is narrow. If it is misaligned, it is impossible to rule out the possibility of collision when the magazine is raised. As such, when a collision occurs between a magazine and a transfer device, various problems may occur such as economic loss due to component failure, machine failure, production stoppage, pallet and transfer device damage, and the like.

The present invention has been made to solve the above problems and shortcomings, by reducing the power consumption, as well as simplify the configuration by driving the transfer device using the power source of the pallet transfer motor without a separate power source. The technical challenge is to make it possible to improve reliability.

Another technical problem of the present invention is to enable the pallet conveying apparatus to take out and bring in a pallet in a clamp / un-clamp manner so that the pallet can be stably conveyed without collision even when the pallet is out of sync at the clamp position.

Another technical problem of the present invention is to remove the load applied to the pallet transporting motor by removing the repulsive force generated in the un-clamped state of the pallet transporting device.

According to an aspect of the present invention, there is provided a pallet transporting device including an arm base for clamping a pallet and withdrawing and loading the pallet, and an auxiliary link for inducing an un-clamp operation of the arm base, wherein the arm base has a flat plate shape. An arm body formed such that the lower center portion is convex and both sides of the convex portion have a concave shape; Arms formed on both sides of the arm main body and provided to be rotatable by an arm bearing, and formed to cover the recesses of the arm main body; A catching roller guide installed on the arm body and contacting the auxiliary link to initiate an un-clamp of the arm; And a translation roller for causing the arm to open as the arm base continues to advance toward the auxiliary link side after the unclamping is initiated by the catching roller guide, wherein the auxiliary link approaches the arm base forwardly. A pair of engaging pieces which are formed to be in contact with the engaging roller guides respectively and rotated by the auxiliary link bearings according to the plurality of locking pieces; And a pair of catching rollers for allowing the catching pieces to respectively rotate and rotate as the arm base continues to advance.

Here, the arm is provided with restoring bars respectively formed at the end of the arm main body, and the locking roller guide has locking jaws engaged with the locking rollers after the arms are opened on the respective arm sides.

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

Pallet conveying apparatus according to the present invention comprises an arm base for clamping the pallet and withdrawal and carry-in, and an auxiliary link for inducing an un-clamp operation of the arm base, described with reference to Figures 2 and 3 same. Here, the auxiliary link is preferably installed so as to be spaced apart from the pallet outlet of the magazine by a predetermined distance.

2 is a structural diagram of an arm base included in a pallet conveying apparatus according to the present invention.

The arm base 30 according to the present invention has an arm main body 100 formed in a flat plate shape, and has a lower center portion convex, and both sides of the convex portion have a concave shape, and arm bearings 116a and 116b on both sides of the arm main body 100. Arms 110a and 110b which are respectively installed to be rotatable by the arm and are formed to cover the recesses of the arm main body 100 and the pallets are inserted into the arms 110a and 110b when the pallet is clamped. Clamp rollers 112a and 112b respectively installed at the upper end of 110b and the arm main body 100 are installed in contact with the auxiliary link provided at the pallet outlet of the magazine as the arm base 30 moves to the magazine side. After the unclamping is initiated by the catching roller guides 120a and 120b and the catching roller guides 120a and 120b to start the un-clamping of the &lt; Desc / Clms Page number 12 &gt; And a translatable roller (114a, 114b) to ensure that the opening arm (110a, 110b). Here, the locking roller guide (120a, 120b) may be configured in a pair so as to correspond to the auxiliary link to be described later.

In addition, the arm (110a, 110b) is configured to automatically restore by hanging the spring to the arm main body 100 side end recovery bar (118a, 118b), when the locking roller guide (120a, 120b) is configured in a pair, respectively It is preferable to provide the locking step (122a, 122b) on the arm side of the. In this case, after the arms 110a and 110b are opened to the outside as much as possible, the auxiliary link bodies 230a and 230b are caught when the conveying device is to be retracted by the restoring force of the spring constituting the recovery bars 118a and 118b. The rollers 210a and 210b may be resisted by the locking jaws 122a and 122b so that the repulsive force of the arm base 30 may be transmitted to the locking roller guides 120a and 120b without being transferred to the pallet transfer motor. To this end, the locking rollers 210a and 210b and the locking jaws 122a and 122b should control their appearance so that fastening and release can be easily performed, respectively.

3 is a structural diagram of an auxiliary link included in the pallet transport apparatus according to the present invention.

The auxiliary link 40 according to the present invention may be installed spaced apart from the magazine outlet of the magazine by a predetermined distance. As the arm base 30 approaches, the catching rollers 210a and 210b and the catching roller guides 120a and 120b are installed. And the engaging piece 200a as the auxiliary link bodies 230a and 230b and the arm base 30 formed to contact the auxiliary link 40 and rotated by the auxiliary link bearings 220a and 220b continue to move forward after contacting the auxiliary link 40. , 200b) includes auxiliary link bearings 220a and 220b for rotation by hanging on the translation rollers 114a and 114b.

In order to safely take out and carry in the pallet by the pallet transfer device including the arm base 30 and the auxiliary link 40 described above, it is preferable to implement to have a structure as shown in FIG.

4 is a structural diagram of a pallet applied to the present invention.

As shown in the drawing, a tray 22 is mounted on a pallet 20 according to the present invention, and a pair of arm rings 24a, which are inserted into the arms 110a and 110b of the arm base 30, that is, into the recesses, are provided. 24b).

5 is a layout view of the pallet transfer apparatus according to the present invention.

FIG. 5 shows a state in which the arm base 30 clamps the pallet 20-1, draws it out along the transfer section 18, and provides it to the component mounter side. The auxiliary link 40 is formed on the pallet outlet side of the magazine, and after all the parts mounted on the pallet 20-1 are exhausted, the arm base 30 moves to the magazine side at high speed so as to move the pallet 20-1. Is brought back into the magazine, and the next pallet 20-2 is withdrawn.

In order to carry in the pallet 20-1, the arm base 30 advances to the magazine side with the pallet 20-1 clamped by the drive of the feed motor, and the pallet 20-1 is stored in the magazine. Contact the auxiliary link 40 at the magazine inlet to initiate the un-clamp.

If the arm base 30 continues to move forward, the catching rollers 210a and 210b may be caught by the catching roller guides 120a and 120b. Accordingly, the auxiliary link bodies 230a and 230b may be configured to support the auxiliary link bearings 220a and 220b. It rotates to the center, wherein the rotation direction of the engaging pieces (200a, 200b) is the opposite direction of the arm base 30 travel direction. At this time, the arm base 30 tries to continue moving forward, but the translation rollers 114a and 114b are caught by the engaging pieces 220a and 220b to rotate around the arm bearings 116a and 116b, and eventually the arm 110a. , 110b) moves away from the arm ring of the pallet 20-1 so that the recess is opened.

Then, when the locking rollers 210a and 210b have passed the highest points of the locking jaws 122a and 122b when the arms 110a and 110b are fully opened, the repulsive force to which the arm base 30 tries to proceed in the reverse direction is applied. It is transmitted to the guide (120a, 120b) so that the load by the repulsive force is not transmitted to the transfer motor.

In this state, the elevator is driven to guide the new pallet 20-2 instead of the pallet 20-1 where the parts are exhausted.

The arm base 30 then clamps the new pallet 20-2 guided in the un-clamped state with the reverse, and continues the reverse at high speed to provide a new pallet 20-2 in the component mounter. .

6a to 6e are diagrams for explaining the principle of the un-clamp of the pallet transfer apparatus according to the present invention.

6A shows a state in which the arm base 30 and the auxiliary link 40 have started contacting. At this time, the locking roller guides 120a and 120b of the arm base 30 and the locking rollers 210a and 210b of the auxiliary link 40 come into contact with each other.

FIG. 6B shows the arm base 30 advanced in the state of FIG. 6A. In this case, the translation rollers 114a and 114b are caught by the engaging pieces 200a and 200b so that the arms 110a and 110b rotate so that the un-clamp away from the arm main body 100 starts, and the arm base 30 is opened. In the case of moving forward, for example, 1 mm from the state shown in FIG. 6A, the un-clamp angle can be controlled to be 7 °.

FIG. 6C shows a state in which the arm base 30 is further advanced from the state shown in FIG. 6B, and the translation rollers 114a and 114b caught on the locking pieces 200a and 200b are further rotated so that the arms 110a and 110b are rotated. The un-clamp angle is further increased. For example, when advanced 1 mm further from the state shown in FIG. 6B, the un-clamp angle is 14 degrees.

FIG. 6D shows that the arm base 30 is further advanced, for example, 1 mm from the state of FIG. 6C so that the un-clamp angle is 19 °. When the arm base 30 is designed to increase by 7 ° every time the arm base 30 is advanced 1mm, the un-clamp angle becomes 21 ° when the arm base 30 is advanced 3mm from the initial position (state of FIG. 6A). The arm base 30 is to be retracted by the repulsive force of the arm bearings 116a and 116b, so the un-clamp angle is actually only 19 °. In order to reduce the influence of the repulsive force, the arm base 30 must be continuously driven by driving the feed motor. In the present invention, the repelling force is transmitted to the catching roller guides 120a and 120b instead of continuing to drive the feed motor. The load on the motor can be reduced.

That is, as shown in FIG. 6E, when the arm base 30 is advanced 1 mm further than the state shown in FIG. 6D, the arms 110a and 110b are completely un-clamped, and the un-clamp angle is 25 °. do. Then, the repulsive force acting on the springs provided in the restoring bars 118a and 118b of the arms 110a and 110b is resisted by the catching jaws 122a and 122b of the catching roller guides 120a and 120b. Repulsion force to reverse) is transmitted to the locking roller guide (120a, 120b).

In the above, the operation of unclamping and reversing the pallet at the same time as the arm base moves forward to the auxiliary link is described. It is also possible.

As such, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

As described above, in the present invention, when the pallet is transferred using the pallet transfer device, the arm is un-clamped at the same time as the pallet is brought into the magazine, and the arm is clamped at the same time as the pallet is taken out, thereby using a separate power source. The pallets can be reliably transported at high speed without the need to be pulled out and brought in without error even when the position of the clamps in the magazine loaded with the pallets is out of sync.

In addition, the repulsive force generated in the transfer device is not transmitted to the transfer motor at the moment when the transfer device advances to the magazine side and the pallet is brought in or taken out, thereby reducing the fatigue of the equipment and preventing failure.

Claims (7)

An pallet transfer device comprising an arm base for clamping the pallet out and in and out, and an auxiliary link for inducing an un-clamp action of the arm base, The arm base may include: an arm body having a flat plate shape and a lower center portion thereof being convex, and both sides of the convex portion having a concave shape; Arms formed on both sides of the arm main body and provided to be rotatable by an arm bearing, and formed to cover the recesses of the arm main body; A catching roller guide installed on the arm body and contacting the auxiliary link to initiate an un-clamp of the arm; And a translation roller for causing the arm to open as the arm base continues to advance toward the auxiliary link after the unclamping is initiated by the locking roller guide, The auxiliary link is a pair of engaging pieces are formed to be in contact with each of the engaging roller guide as the arm base is moved forward and approached by the auxiliary link bearing; And a pair of catching rollers for engaging and rotating the catching pieces of the arm base, respectively, as the arm base continues to advance. The method of claim 1, The arm has a restoring bar which is formed at each end of the arm body side, and the catching roller guide has a catching jaw engaged with the catching roller after the arms are opened on each of the arm sides. Device. The method of claim 1, The catching roller guide is a pallet conveying apparatus, characterized in that a pair of catching roller guide respectively corresponding to the auxiliary link body. The method of claim 1, The auxiliary link is installed so that the pallet is spaced apart from the pallet outlet of the parts supply device magazine on which the pallet is loaded, or installed integrally with the arm base. The method of claim 4, wherein And the auxiliary link is installed in a plurality of pairs. The method of claim 1, And the arm base further comprises clamp rollers, each of which is provided at an upper end of the arm so that the clamp portion of the pallet enters the recess when the pallet is clamped. The method of claim 1, The pallet transfer device is installed in the component supply device, The arm base is linearly moved along the conveying part of the component supply apparatus, and the auxiliary link is installed to be spaced apart from the pallet outlet of the component supply apparatus magazine by a predetermined distance. The arm base is advanced toward the magazine side along the conveying part, and the arm is opened by the auxiliary link, and as the arm base starts reversing, the pallet loaded on the magazine is clamped and pulled out of the arm, and the arm is pulled out. And the base advances to the magazine side while clamping the drawn pallet, and the arm is opened by the auxiliary link to un-clamp the pallet.

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