KR101575195B1

KR101575195B1 - Table lift

Info

Publication number: KR101575195B1
Application number: KR1020150146341A
Authority: KR
Inventors: 이일우; 성두창
Original assignee: (주)밀성씨앤티
Priority date: 2015-10-20
Filing date: 2015-10-20
Publication date: 2015-12-07

Abstract

The present invention relates to a table lift which can elevate a height automatically according to the weight of an article to be stacked and maintain a stacking height constant.
The table lift according to the present invention includes a loading unit having a load cell, a guide frame for guiding the loading and unloading of the loading unit, a driving motor connected to the loading unit and elevating and lowering the loading unit by rotation, And a control unit for inputting a set value of the control unit, wherein the operation unit has a maximum height value and a minimum height value of the loading unit, a weight and a height value per quantity of the article to be loaded, The control unit may rotate the drive motor in the forward and reverse directions according to the weight of the article loaded on the load cell to set the load weight of the load cell and the load weight of the load unit, And calculating a quantity of the article corresponding to the weight measured by the load cell, Value as characterized by that the weight of the lifting height sikimyeo the loading portion, corresponding to the minimum detected weight value less than or more than the maximum detected weight value is set to operate a warning means when the measurement from the load cell.

Description

Table lift {Table lift}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a table lift, and more particularly, to a table lift capable of automatically raising and lowering a height of a stacked article to maintain a stack height.

The table lift is mainly used in the industrial field for manufacturing and transporting goods. An operator moves the goods on a conveyor to a table lift and stacks them in multi-tiered warehouses or transportation vehicles.

Because of the nature of the automated production line, where thousands to tens of thousands of items are produced per day, when the worker loads the goods while loading the articles from the floor while lowering the waist, the efficiency of the work is greatly reduced and the worker becomes overworked. There is a problem that the same disease occurs.

The table lift is a device for solving such a problem, and the height of the loading part is raised according to the article to be loaded so that the worker can always work at a constant height.

Representative examples of such table lifts are specifically known in the prior art as "turntable lift " (patent 10-0653933) and" automatic return weight adjustment table lift 10-1446550 ".

However, as shown in Fig. 1, the "turn table lift" has to be replaced with a spring having a different elasticity in accordance with the load, because the load is dependent on the spring elasticity. There is a problem that the load weight varies.

In addition, because the weight of the load is fixed, there is no general purpose, and therefore, there is a problem that the economic loss is large because a plurality of table lift devices must be purchased.

In order to solve such a conventional problem, the present inventor has developed and registered an "automatic return weight adjustment table lift (10-1446550) ". However, the "automatic return weight control table lift" can be used for applications where the load capacity is adjustable, but the height of the loading part is not sensitive and accurate due to the friction load at the stationary part of the cylinder piston, There was no problem.

Accordingly, the inventor of the present invention has developed the present invention which drastically improved the disadvantages of the conventional "automatic returning weight adjustment table lift (10-1446550) ".

Korean Patent No. 10-0653933 (November 28, 2006) Korean Patent No. 10-1446550 (Apr. 25, 2014)

It is an object of the present invention to provide a table lift which can elevate a height automatically according to the weight of an article to be stacked and maintain a stacking height constant.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described, a table lift according to the present invention includes a loading unit having a load cell, a guide frame for guiding the loading and unloading of the loading unit, a driving motor connected to the loading unit, A control unit for controlling the rotation of the driving motor, and an operation unit for inputting a set value of the control unit, wherein the operation unit has a maximum height value and a minimum height value of the loading unit, a weight and height value , The moving distance of the loading unit, the deviation range of the weight of the product, the minimum sensing weight value of the load cell, and the maximum sensing weight value can be set, and the control unit can set the driving motor The weight of the article corresponding to the weight measured by the load cell is calculated, and the calculated quantity Characterized in that by a value corresponding to the height of the goods to weight sikimyeo lifting height the loading portion, corresponding to the minimum detected weight value less than or more than the maximum detected weight value is set to operate the warning means when the measurement from the load cell.
A connection member formed with a hollow through both ends and formed with a female screw along an inner circumferential surface thereof and fixed to one side of the mounting portion, a cylindrical body having a predetermined length and formed with threads along an outer circumferential surface thereof, Wherein the guide frame includes a pair of guide frames which are opposed to each other and guide rollers are provided on both sides of the loading part to move on the pair of guide frames, The connecting member is lifted and lowered on the guide shaft.
And a motor encoder for measuring a rotation direction and a rotation number of the guide shaft and transmitting the measured rotation direction and rotation number to the control unit, wherein the controller compares the measured value with a set value for the rotation direction and the rotation number of the guide shaft, Thereby rotating the shaft in normal and reverse directions.

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The present invention has the following various effects.

First, the present invention can set the weight, height, deviation range, and the like of various articles through the operation unit, so that the versatility is very high and it is possible to cope with various kinds of articles by only one table lift.

Second, the present invention can precisely control the moving distance of the loading section by precisely controlling the rotation direction, rotation speed, and degree of rotation of the motor.

Third, the present invention automatically raises and lowers the height of the loading part according to the amount of the loaded articles, so that it is possible to work at the same height at all times, so that the working speed is very fast and the worker's physical behavior radius and burden are effectively reduced.

Fourth, the present invention can be used not only for stacking the products one by one but also for stacking the products stacked one by one.

1 is a view showing a conventional turntable lift.
FIG. 2 is a view showing an overall view of a table lift according to the present invention.
3 is a view showing a state of a loading part which is a main constituent of the present invention.
4 to 6 are views showing an operation state of the table lift according to the article loading state according to the present invention.
7 is a flowchart showing the operation of the table lift according to the present invention.
FIG. 8 is a diagram illustrating the overall operation of the table lift according to the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings, and the same reference numerals are given to the background art and the constituent elements of the constitution which have already been described.

The description of the table lift of the present invention described below is a preferred embodiment of the present invention, and the present invention is not limited to the embodiments but can be implemented in various forms.

In addition, the shape, size, and the like of each constitution described below are representative examples and are not fixed, and can be variously changed if the same effect can be realized.

2 and 3, the table lift 1 according to an embodiment of the present invention includes a loading unit 100, a guide frame 200, a control unit 400, an operation unit 500, and a display unit 600 ).

The loading unit 100 is formed in a solid plate shape having a predetermined width and thickness so that various types of articles 10 can be loaded. A load cell 110 having a predetermined area is provided at the center of the loading unit 100 to measure the weight of the article 10 to be loaded and the measured weight is transmitted to the controller 400.

A fixing plate 130 having a predetermined area is provided at the front end of the loading unit 100 and a connecting member 140 is fixed to one side of the fixing plate 130 by welding or the like. The connecting member 140 is formed with a hollow through both ends thereof and has a female thread formed along the inner circumferential surface thereof, and it is also possible to apply commercially available flange nuts if the same function can be achieved.

A pair of vertical frames 150 are provided on opposite sides of the front end of the stacking unit 100 and a pair of guide rollers 120 are spaced apart from each other on each vertical frame 150.

The guide frame 200 guides the lifting and lowering of the loading unit 100. The guide frame 200 is formed in a U shape having a guide groove 210 therein to insert the guide roller 120 into the guide groove 210 .

In the embodiment of the present invention, since the guide rollers 120 are provided in the respective vertical frames 150 after having the pair of vertical frames 150, the guide frames 200 are also provided in pairs, The number and position of the guide frame 200 can also be changed according to the situation in which the guide roller 120 and the guide roller 120 are applied.

The driving motor 300 is connected to the loading unit 100 and lifts and raises the loading unit 100 by rotation. One end of the guide shaft 320 is connected to the rotating shaft 310 of the driving motor 300 , And is preferably applied as an AC reduction gear brake motor for precise operation control. The driving motor 300 is supplied with driving power through a separate power source 350.

The guide shaft 320 is formed in a cylindrical shape having a predetermined length and is formed with threads 321 along the outer circumferential surface of the guide shaft 320. The guide shaft 320 is inserted through the connecting member 140, It is fixed as much as possible.

The upper support frame 240 is connected to the upper side of the pair of guide frames 200 and the operation unit 500 is positioned and the lower support frames 250 are connected to each other below the pair of guide frames 200 Respectively.

The upper support frame 240 and the lower support frame 250 are provided with a support unit 241 so that both end portions of the guide shaft 320 are rotatably inserted through the guide shaft 320 and the guide shaft 320 is supported by the support unit 241 The position is fixed.

A support frame 260 having a predetermined area in a direction parallel to the stacking unit 100 is provided below the guide frame 200 so that when the stacking unit 100 is lowered to the lowest height, And a wheel 270 for moving is provided at a corner of the support frame 260, respectively.

The control unit 400 controls the rotation direction, the rotation speed, and the rotation degree of the driving motor 300, and the operator can input the set value of the control unit 400 through the operation unit 500. [

This is to increase the versatility by setting the weight and the height value per quantity of the article 10 to be loaded so as to be changeable because the articles 10 to be manufactured at the job site are very diverse.

Therefore, the operator can determine the maximum height value and the minimum height value of the loading unit 100 through the operation unit 500, the weight and height value per quantity of the article 10 to be loaded, the moving distance of the loading unit 100, 10) If the articles 10 are loaded one by one after setting the deviation range of the weight, the quantity of the articles 10 loaded is calculated using the weight measured by the load cell 110, The height of the loading unit 100 is changed by rotating the motor 300 in the forward direction or the reverse direction.

For example, as shown in FIGS. 4 to 6, in order to load the article 10 having a weight of 1 kg and a height of 20 cm, the maximum height value of the loading unit 100 (the maximum height value is set to an operator- The load cell 110 is set to 1 m from the supporting frame 260 and the lowest height value is set to the height of the upper surface of the supporting frame 260. When the articles 10 are loaded one by one, The height of the loading unit 100 is lowered by rotating the driving motor 300 by the distance corresponding to the height of 20 cm.

If five pieces are loaded, 100 cm will be lowered. If one of them is taken out, the driving motor 300 rotates in the opposite direction by 20 cm again, and the height of the loading unit 100 is increased.

The range of deviation of the moving distance of the loading unit 100 is for adjusting the accuracy of the operation. The deviation range of several millimeters to several centimeters can be inputted according to the volume and weight of the article 10 to be loaded. It is not recognized as a deviation value in a motor encoder (not shown) to be described later. However, if the deviation is accumulated and exceeds the sum of the deviation ranges per quantity, an error is detected by the motor encoder (not shown), and the controller 400 performs the correction operation.

The deviation range of the weight of the article 10 is intended to prevent other articles 10 other than the set article 10 from being stacked. If the range of weight deviation that can be generated in the article 10 is set in advance, 10 are loaded and informed to the operator through warning means such as an alarm and a lamp when the weight is out of the deviation range so that the set value and the type and bad state of the loaded article 10 can be confirmed.

For example, in the case of the article 10 having a weight of 1 kg and a weight deviation range of 10 g, a weight of 990 g to 1010 g is the normal weight of the article 10, and when the article 10 is out of this range, .

In addition, it is preferable that the operation unit 500 of the present invention sets the minimum sensing weight value and the maximum sensing weight value of the load cell 110. In this case, the control unit 500 may set the minimum sensing weight value and the maximum sensing weight value, When the weight is measured from the load cell 110, a signal can be received and alarm means such as an alarm and a lamp can be operated.

This is because the table lift 1 according to the present invention can be stacked in a plurality of layers without any article 10, The minimum detection weight value or the maximum detection weight value is set in accordance with the value, and when the value becomes equal to or less than the corresponding value, the operator is informed via the warning means so that the operator can prepare for the next operation.

For example, when the article 10 having a weight of 1 kg is loaded in 10 layers, if the maximum sensed weight value is set to 10 kg, it is notified to the operator through instant warning means that ten articles 10 are loaded It is possible to immediately carry out operations such as replacing or moving the table lift 1 without carrying it any longer.

When the article 10 is lowered in a state in which ten articles 10 having a weight of 1 kg are loaded, if the minimum sensed weight value is set to 1 kg, nine articles 10 are lowered and then, Notify the operator It is possible to replace the table lift (1) or prepare to stop work.

The operation of the driving motor 300 causes the height of the loading unit 100 to be raised and lowered by rotating the rotation shaft 310 and the guide shaft 320 to change the position of the connecting member 140. At this time, And a motor encoder (not shown) for measuring the rotation direction and the rotation speed of the motor 400 and transmitting the measured rotation direction and rotation number to the control unit 400.

The control unit 400 is provided with a moving distance value of the loading unit 100 that is raised and lowered according to the rotational direction and the rotational speed of the guide shaft 320. The rotational direction and the rotational speed measured by the motor encoder The set rotation direction and the number of revolutions are compared and the position of the guide shaft 320 is rotated by the deviation value again to correct the position.

At the same time, data such as the quantity, the stacking height, the weight value, and the like of the articles 10 obtained through the control unit 400 are displayed through the display unit 600.

1: Table lift 10: Goods
100: loading part 110: load cell
120: guide roller 200: guide frame
260: support frame 300: drive motor
320: guide shaft 500:

Claims

A loading unit having a load cell;
A guide frame for guiding the lifting and lowering of the loading part;
A driving motor connected to the loading unit and raising and lowering the loading unit by rotation;
A control unit for controlling rotation of the driving motor; And
And an operation unit for inputting a set value of the control unit,
Wherein the operation unit is configured to set the maximum height value and the minimum height value of the loading unit, the weight and height value per quantity of the article to be loaded, the range of movement of the loading unit and the deviation range of the article weight, Value setting can be set,
Wherein the control unit controls the drive motor to rotate the drive motor in accordance with the weight of the article loaded on the load cell to elevate the load unit and to calculate the quantity of the article corresponding to the weight measured by the load cell, Wherein the height of the loading unit is raised by a height value of the load cell, and when the load cell is measured from a weight corresponding to a value less than the set minimum sensing weight or greater than the maximum sensing weight, the warning means is activated.

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The method according to claim 1,
A connecting member formed with a hollow through both ends thereof and having a female thread formed along the inner circumferential surface thereof and fixed to one side of the loading section,
And a guide shaft formed in a cylindrical shape having a predetermined length and formed with a thread along an outer circumferential surface thereof and connected to a rotating shaft of the driving motor and penetratingly coupled with the connecting member,
Wherein the guide frames are provided in a pair facing each other, and guide rollers are provided on both sides of the stacking unit to move on the pair of guide frames,
And the connecting member is moved up and down on the guide shaft in accordance with rotation of the driving motor.

The method of claim 3,
And a motor encoder for measuring the rotation direction and the number of revolutions of the guide shaft and transmitting the measurement to the control unit,
Wherein the controller compares the measured value with a set value for the rotational direction and the number of rotations of the guide shaft and rotates the guide shaft in normal and reverse directions by a deviation value.

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