KR20160070480A - Apparatus for transferring a pallet - Google Patents

Abstract

A pallet transfer device includes a base, a servo motor, a first feeder, a pinion tool, a second feeder, a chain tool, and a pork. The servo motor can be installed on the base. The first feeder can be connected to the base to be movable. The pinion tool can deliver rotational force of the servo motor to the first feeder. The second feeder can be connected to the first feeder to be movable. The chain tool can move the second feeder by receiving the rotational force from the pinion tool. The pork is installed in the second feeder to clamp a pallet. Therefore, since the pallet is transferred by a pinion and only one chain, an effect of an elongation property, caused by a load applied to the chain, can be reduced. As a result, the present invention is capable of transferring the pork accurately to a desired position.

Description

[0001] APPARATUS FOR TRANSFERING A PALLET [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pallet transporting apparatus, and more particularly, to a pallet transporting apparatus that transports a pallet by holding and holding a work with a machine tool.

In general, a pallet can be used to bring material into and out of a machine tool. The pallet can be carried in and out of the machine tool by the transfer device. The pallet transport apparatus may include a base, a first feeder, a second feeder, and a fork. The first feeder may be movably connected to the base via a chain. The second feeder may be movably connected to the first feeder by a single chain. The fork can be mounted on the second feeder to hold the pallet.

According to the related art, the first feeder and the second feeder may be driven by two separate chains. When the two chains are overloaded, the fork can not be moved to the correct position due to the elongation characteristic of the chain. Also, since the transfer device includes a large number of complicated sprockets for power transmission of the chain, the transfer device can have a complicated structure, large size and heavy weight. In addition, since the second feeder is composed of two pieces supporting the lower surfaces on both sides of the fork, it may not be easy to carry / unload the pallet.

The present invention provides a pallet transporting device having a simple structure, small size and light weight and capable of transporting the nut pallet to the correct position.

A pallet transporting apparatus according to one aspect of the present invention may include a base, a servo motor, a first feeder, a pinion mechanism, a second feeder, a chain mechanism, and a pork. The servo motor may be mounted on the base. The first feeder may be movably connected to the base. The pinion mechanism can transmit the rotational force of the servo motor to the first feeder. The second feeder may be movably connected to the first feeder. The chain mechanism can receive the rotational force from the pinion mechanism and move the second feeder. A fork may be mounted to the second feeder to clamp the pallet.

In exemplary embodiments, the pinion mechanism may include a drive gear coupled to the servo motor, at least one pinion engaged with the drive gear, and a pinion coupled to the pinion and fixed to the first feeder, And may include a rack that converts to a linear motion force.

In exemplary embodiments, the chain mechanism includes a bearing unit rotatably mounted on the first feeder and moving with the first feeder, and a bearing unit coupled to the bearing unit and fixed to the second feeder, And a chain for transmitting the linear movement force of the first feeder to the second feeder.

In exemplary embodiments, the chain may be a pair arranged along both side edges of the second feeder.

In exemplary embodiments, the second feeder may be a single piece fixed to the pair of chains.

In exemplary embodiments, the transport device may further include a guide block arranged on the base along both sides of the first feeder to guide movement of the first feeder.

According to the present invention described above, the first feeder is moved on the base by the pinion mechanism, and the second feeder can be moved on the first feeder by the chain mechanism. Therefore, since the transfer of the pallet is performed by only one chain with the pinion, the influence of the elongation characteristic of the chain due to the load applied to the chain can be reduced. As a result, the fork can be accurately transported to a desired position. In addition, the conveying device can have a simple structure, small size, and light weight, since it is not necessary to provide a complex and heavy sprocket to the conveying device. In addition, since the second feeder is a unitary one, pallet loading / unloading can be facilitated.

1 is a perspective view illustrating a pallet transporting apparatus according to an embodiment of the present invention.
2 is a front view showing the pallet transporting apparatus shown in Fig.
3 is a plan view showing the pallet transporting apparatus shown in Fig.
4 is a cross-sectional view taken along the line IV-IV - of FIG.
5 is a cross-sectional view taken along the line V-V_ of FIG.

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

The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

FIG. 1 is a perspective view showing a pallet transporting apparatus according to an embodiment of the present invention, FIG. 2 is a front view showing the pallet transporting apparatus shown in FIG. 1, FIG. 3 is a plan view showing the pallet transporting apparatus shown in FIG. FIG. 4 is a cross-sectional view taken along the line IV-IV - of FIG. 3, and FIG. 5 is a cross-sectional view taken along line V-V of FIG.

1 to 5, a pallet transporting apparatus according to the present embodiment includes a base 110, a servomotor 120, a first feeder 130, a second feeder 140, a fork 150, (160) and a chain mechanism (170).

The servo motor 120 may be mounted on the base 110. The first feeder 130 may be movably coupled to the upper surface of the base 110 along the horizontal direction. The second feeder 140 may be movably coupled to the upper surface of the first feeder 130 along the horizontal direction. The fork 150 may be attached to the second feeder 140. The fork 150 can clamp the pallet. The fork 150 may have a plurality of fixing holes 152 into which the pallet is inserted.

The pinion mechanism 160 can transmit the rotational force of the servo motor 120 to the first feeder 130. The pinion mechanism 160 may include a drive gear 162, at least one pinion 164, and a rack 166. The driving gear 162 may be connected to the servo motor 120 to receive rotational force. The driving gear 162 may be connected to the servo motor 120 via the speed reducer 122. The pinions 164 can be engaged with the driving gear 162. [ The rack 166 may engage the pinions 164. Further, the rack 166 may be installed on the lower surface of the first feeder 130. The rack 166 may be disposed at the center of the lower surface of the first feeder 130.

The rotational force generated from the servo motor 120 can be transmitted to the driving gear 162 and the pinions 164. The rack 166 can convert the rotational force of the pinion 164 into a linear motion force. Therefore, the first feeder 130 fixed to the rack 166 can be moved back and forth along the horizontal direction on the upper surface of the base 110.

A roller bearing 185 may be rotatably disposed on the upper surface of the base 110. The roller bearing 185 can support the first feeder 130 moved on the upper surface of the base 110. In addition, guide blocks 180 may be disposed on both side edges of the upper surface of the base 110. The guide block 180 may prevent the first feeder 130, which is horizontally moved from the upper surface of the base 110, from moving left and right.

The chain mechanism 170 can transmit the linear movement force of the first feeder 130 to the second feeder 140. The chain mechanism 170 may include a bearing unit 172 and a chain 174. The bearing unit 172 may be rotatably connected to both sides of the first feeder 130. Accordingly, the bearing unit 172 can be moved along with the first feeder 130 in the horizontal direction. The chain 174 may be coupled to the bearing unit 172. In addition, the chain 174 may be connected to the lower surface of the second feeder 140. Accordingly, when the first feeder 130 is moved, the bearing unit 172 can be rotated and moved while pushing the chain 174. [ Since the chain 174 is moved, the second feeder 140 can also be moved along the horizontal direction.

The chain 174 may be a pair disposed along both side edges of the lower surface of the second feeder 140. That is, the chain 174 may include one chain disposed along one side edge of the lower surface of the second feeder 140 and another chain disposed along the other side edge of the lower surface of the second feeder 140 have. In addition, the chain 174 can receive a certain tension by the tension unit 176 mounted on the base 110. The chain 174 may be supported by a fixed block 178 attached to the second feeder 140.

The second feeder 140 may be a single piece connected to the chain 174. The fork 150 may be installed in the second feeder 140. Since the single type second feeder 140 and the fork 150 have a relatively smaller size than the structure having the double type second feeder, it is easy to carry in / out the pallet.

The operation of bringing the pallet into the machine tool is as follows. The servomotor 120 can be driven in the forward direction with the pallet inserted into the fixing holes 152 of the fork 150. [ The rotational force of the servo motor 120 is transferred to the driving gear 162 and the pinion 164 and then can be converted into a linear motion force by the rack 166. [ The first feeder 130 can be advanced on the upper surface of the base 110 by the rack 166. The second feeder 140 connected to the first feeder 130 may advance as well. During the advancing operation of the first feeder 130, the first feeder 130 can be supported by the roller bearing 185. In addition, the guide block 180 can prevent the first feeder 130 from rocking left and right.

As the first feeder 130 advances, the bearing unit 172 can also advance while rotating. The chain 174 coupled to the bearing unit 172 is rotated so that the second feeder 140 can further advance on the first feeder 130. [ Accordingly, the second feeder 140 can advance by a distance obtained by summing up the advancing distance of only the second feeder 140 to the advancing distance of the first feeder 130.

Removing the pallet from the machine tool may include operations in which the above-described carry-in motions are performed inversely by driving the servomotor 120 in the reverse direction. Therefore, the repetitive description of the pallet taking-out operation can be omitted.

The loading / unloading operation as described above can be performed by the pinion mechanism 160 and the single chain mechanism 170. The lowering of the conveyance accuracy can be increased proportionally as the number of the chain mechanisms 170 increases. Therefore, since the conveying device of this embodiment includes only one chain mechanism 170, the reduction in the conveyance accuracy that can be caused by the chain mechanism 170 can be suppressed. Further, since it is not necessary to provide a conveying device with a sprocket having a complicated structure for driving a plurality of chain mechanisms, the conveying device having only one chain mechanism 170 can have a simple structure, small size and light weight have.

In addition, since the second feeder 140 is a single unit, the structure in which the single-type second feeder 140 and the fork 150 are combined may have a relatively smaller size than the structure in which the double-type second feeder and the fork are combined. Thus, the loading / unloading of the pallets into / from the fork 150 can be facilitated.

As described above, according to the present embodiment, the first feeder is moved on the base by the pinion mechanism, and the second feeder can be moved on the first feeder by the chain mechanism. Therefore, since the transfer of the pallet is performed by only one chain with the pinion, the influence of the elongation characteristic of the chain due to the load applied to the chain can be reduced. As a result, the fork can be accurately transported to a desired position. In addition, the conveying device can have a simple structure, small size, and light weight, since it is not necessary to provide a complex and heavy sprocket to the conveying device. In addition, since the second feeder is a unitary one, pallet loading / unloading can be facilitated.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. And changes may be made without departing from the spirit and scope of the invention.

110; Base 120; Servo Motor
122; A speed reducer 130; The first feeder
140; A second feeder 150; fork
160; Pinion mechanism 162; Drive gear
164; Pinion 166; Rack
170; Chain mechanism 172; Bearing unit
174; Chain 176; Tension unit
178; A fixed block 180; Guide block
185; Roller bearing

Claims (6)

Base;
A servo motor mounted on the base;
A first feeder movably connected to the base;
A pinion mechanism for transmitting the rotational force of the servo motor to the first feeder;
A second feeder movably connected to the first feeder;
A chain mechanism that receives the rotational force from the pinion mechanism and moves the second feeder; And
And a pork mounted on the second feeder for clamping the pallet. 2. The apparatus according to claim 1, wherein the pinion mechanism
A driving gear connected to the servo motor;
At least one pinion engaged with the drive gear; And
And a rack coupled to the pinion and fixed to the first feeder to convert the rotational force into a linear motion force. The apparatus as claimed in claim 1, wherein the chain mechanism
A bearing unit rotatably installed on the first feeder; And
And a chain coupled to the bearing unit and fixed to the second feeder for transmitting a linear motion force of the bearing unit to the second feeder. The pallet conveying apparatus according to claim 3, wherein the chain is a pair of pallets arranged along both side edges of the second feeder. 5. The pallet transporting device according to claim 4, wherein the second feeder is a single piece fixed to the pair of chains. The pallet transporting apparatus according to claim 1, further comprising a guide block arranged on the base along both sides of the first feeder to guide movement of the first feeder.

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