KR200289922Y1 - Balanced glass glass truck with import / export function - Google Patents

Abstract

The present invention discloses a liquid crystal cell glass transport cart equipped with an import / export function. According to the disclosed subject matter, the elevating plate 3 is lifted up and down by the drive mechanism to the main body frame 1 provided with the caster 2. The fork stage S consisting of three stages 5, 6 and 7 is rotatably connected on the lifting plate 3, and the cassette C containing a plurality of liquid crystal glasses on the upper stage 5 is provided. It is enshrined. Each stage 5, 6, 7 is connected so as to allow relative sliding movement, and it is possible to advance the cassette C into the production equipment by the length of the stage 5, 6, 7. In addition, the attachment mechanism is provided in the main body frame 1, and the center line of the main body frame 1 and the production equipment is exactly matched naturally by the attachment mechanism. In addition, it is also possible to switch to 180 degrees in the forward direction of the fork stage S by the locking knob 16 fastened between the table 3 and the fork stage S. FIG.

Description

Liquid Crystal Glass Carrying Cart with Import / Export Function

The present invention relates to a cart for carrying a liquid crystal glass with an import / export function, and more particularly, to produce a cassette containing a plurality of liquid crystal cells for transporting from one process line to a subsequent process line. A truck is provided with a function of importing / exporting cassettes to / from equipment.

For example, in manufacturing a liquid crystal display device, it is necessary to carry the operation of conveying the liquid crystal glass that has been completed in one unit process line to a subsequent process line.

Conventionally, a cassette (weight of approximately 40 kg including liquid crystal glass) containing a large number of liquid crystal glasses was transported by hand. That is, the operator carried the cassette directly and also brought in / out of the production equipment.

However, conventionally, since heavy cassettes were transported by hand, excessive force of the operator was required. In particular, vibrations are transmitted to the cassette during transportation, so that an accident in which the liquid crystal glass in the cassette is broken often occurs.

In addition, in the prior art, the operator to manually import / export the cassette to / from the production equipment, there was a problem that the operator is very difficult to import / export heavy cassette to / from the production equipment. In particular, the liquid crystal glass in the cassette is shaken during the import / export, so that the liquid crystal glass severely collides with the inner wall of the cassette, so that expensive liquid crystal glass is broken or particles having a fatal adverse effect on the liquid crystal glass are generated.

In addition, in the related art, there was a inconvenience that a worker must check the import / export position by naked eye.

The present invention devised to solve the above problems, the object of the present invention is to provide a liquid crystal glass transport trolley equipped with an import / export function that can be carried in / out of production equipment as well as to transport the cassette with a small force. have.

1 is a front view of a bogie according to the present invention

2 and 3 are side views of the bogie,

2 shows the fork stage lowered

3 shows the fork stage raised

4 is an explanatory diagram showing an attach operation as a main part of the present invention;

5 is an operation explanatory diagram showing a state in which the fork stage which is the main part of the present invention is rotated in both directions

6 is a plan view of a table showing a position where a locking groove which is a main part of the present invention is formed;

-Explanation of symbols for the main parts of the drawing-

C-Cassette S-Fork Stage

1-Body Frame 2-Casters

3-Platform 5,6,7-Upper and Lower Stages

8-guide roller 9-guide member

10-Cross Truss 11-Ball Screw

12-Timing Belt 13-Lever

16-locking knob 17-first attach roller

18-2nd Attach Roller 19-Attachment Shaft

20-Slider 21-Link Mechanism

22-Pedal 23-Coil Spring

24-Air Cushion 27-Table

In order to achieve the above object, the present invention has the following configuration.

Casters are installed at each corner of the bottom of the main frame. A ball screw is arranged laterally on the bottom of the main frame. One end of the ball screw is connected to a lever that the operator holds by hand. On the outer circumference of the ball screw, the lower end of the cross-shaped truss which is elevated in accordance with the rotation direction of the ball screw is screwed. The cross truss has a structure in which several links cross each other, the ends of each link are pivoted, and the intersection of each link is also pivoted. A lifting plate pivots on top of the cross truss. An air cushion for cushioning shock is provided on the outer periphery of the table forming the upper structure of the main frame. At least two stages of fork stages are connected to the center of the lifting plate. Each stage of the fork stage is slidably connected to the stage just below.

In addition, a pair of first and second attach rollers are installed on the side of the main body frame facing the production equipment. Each attach roller is fitted to a pair of attachments provided in the production equipment. Engaging grooves are formed on the opposing surfaces of the respective attachments, and the respective attachment rollers are fitted into the engaging grooves. The first attach roller is elastically inclined at a predetermined acute angle toward the outside from the center line of the main frame. The second attach roller is movably fitted to a guide shaft installed orthogonally to the center line of the body frame. Further, the second attach roller is elastically supported in the outward direction by a coil spring fitted to the attach shaft adjacent to the centerline of the main frame. The second attach roller is fixed to the upper end of the link mechanism bent at a predetermined angle, and at the other end of the link mechanism, a pedal is provided to allow the operator to step on the foot so that the second attach roller moves inward while compressing the coil spring. .

Further, the vehicle is also provided with means for corresponding to each production equipment arranged on both sides of the narrow passageway. That is, the bottom stage of the fork stage is rotatably connected to the center of the lifting plate. The locking knob is fitted to one side of the bottom stage so as to be movable, and the locking knob is selectively fitted to locking grooves respectively formed on both sides of the table top surface spaced 180 ° apart from each other.

According to the configuration of the present invention described above, if the cassette is placed in the fork stage, and the lever is rotated to raise the cross truss, the fork stage is raised to the loading or unloading height, and then the respective stage is slidably moved, the cassette. Will be imported / exported to / from production equipment.

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

1 is a front view of the bogie according to the present invention, Figures 2 and 3 are side views of the bogie, Figure 2 is a fork stage is lowered, Figure 3 is a fork stage is raised, Figure 4 is the present invention Figure 5 is an explanatory view showing the attach operation of the main part, Figure 5 is an operation explanatory view showing a state in which the fork stage is a main part of the present invention is rotated in both directions, Figure 6 shows a position where the locking groove is formed the main part of the present invention Top view of the table.

As shown in Figs. 1 to 3, the main body frame 1 has a rectangular shape with an upper opening. Four casters 2 are installed at the bottom edges of the main frame 1. A handle 14, which is a part held by a worker by hand to push the cart, is installed on the side of the main frame 1. The table 27 is installed on the upper part of the main frame 1.

The drive mechanism is provided in the main body frame 1. In this embodiment, the drive mechanism is configured as follows. A ball screw 11 is arranged laterally on the bottom of the main frame 1. The timing belt 12 is connected to one side of the ball screw 11 and disposed upward. When the timing belt 12 is connected to the lever 13 to rotate the lever 13, the rotational force is transmitted to the ball screw 11 through the timing belt 12.

The cross truss 10 is screwed to the outer circumference of the ball screw 11. The cross truss 10 has a structure in which several links crosswise, and both ends of the lowermost link are screwed to the outer circumference of the ball screw 11. In the present embodiment, the four-link cross truss 10 is configured, but the present invention is not limited thereto, but may be configured as six, eight, or more. The ends and intersections of each link are pivoted to each other so that they can be folded or unfolded.

Here, in the present embodiment, as the driving mechanism, the above mechanism is taken as an example, but the present invention is not limited thereto, and other mechanisms such as an air cylinder may be used.

The upper end of each top link of the cross-shaped truss 10 is pivotally connected to the bottom surface of the elevating plate 3. That is, the lifting plate 3 moves up and down by the movement of the cross truss 10 to be retracted or unfolded. Two guide shafts 4 for guiding the lifting motion of this lifting plate 3 are arranged around the cross truss 10. The lower end of the guide shaft 4 is fixed to the bottom of the main frame 1, and the upper end is fitted to the lifting plate 3 so as to be movable. In addition, as shown in FIG. 2, an air cushion 24 for cushioning shock is provided between the table 27 and the main frame 1.

A fork stage S composed of three stages 5, 6, 7 is connected to the center of the elevating plate 3. In the present embodiment, the fork stage S is configured in three stages, but this is to correspond to the import or export position of the production equipment. Therefore, when the import or export position is changed, two or four stages or more stages can be configured. There is a number.

Meanwhile, the lower stage 7 may be fixed to the elevating plate 3, but the elevating plate 3 is capable of carrying in / out of the cassette C to each production equipment arranged on both sides of the narrow passage as shown in FIG. 5. It is preferable to be connected to the rotating shaft 15 to be rotatable. Details of the rotational operation and the locking operation of the lower stage 7 will be described later.

Each stage 5, 6, 7 is connected to allow sliding movement. That is, several guide rollers 8 in a set are arranged on the upper surface of the intermediate part and the lower stages 6, 7 at regular intervals. A guide member 9, which is moved between each guide roller 8, is installed at the bottom of the upper and middle stages 5 and 6, so that the upper and middle stages 5 and 6 are arranged in the middle and lower stages ( 6, 7) can be moved sliding. On the other hand, the intermediate part stage 6 is provided with a handle 25 for pushing the operator more easily. Then, the cassette C, in which a plurality of liquid crystal glasses are stacked, is placed on the upper stage 5. On the upper stage 5, a support block 26 for supporting the cassette C is provided.

On the other hand, as shown in Figure 1, the attach mechanism is provided on one side of the body frame (1). Attachment mechanism is for making the cassette C import / export correctly by making the centerline of a production equipment match with the centerline of a trolley | bogie. The configuration is shown in FIG.

4 shows the first and second attach rollers 17, 18 attached to both sides of the body frame 1 as shown in plan view. First, the first attach roller 17 at a position far from the handle 14 is not disposed in parallel with the center line of the main body frame 1, but is opened at a predetermined acute angle toward the outside to be far from the center line. Resilient support in a state. That is, although not shown, the first attach roller 17 is elastically supported toward the outside by a spring.

The second attach roller 18 is connected to the slider 20, which is movably fitted to the attach axis 19 provided in the body frame 1 so as to be orthogonal to the center line. The upper end of the link mechanism 21 of the structure bent at a predetermined angle is connected to the slider 20. A pedal 22 on which the operator steps on is installed at the lower end of the link mechanism 21. On the other hand, the coil spring 23 is fitted on the outer periphery of the attach shaft 19 on the side of the first attach roller 17 around the slider 20. That is, when the pedal 22 is pressed by the foot, the slider 20 moves in the direction of the first attach roller 17 along the attach axis 19 while compressing the coil spring 23.

The reason for configuring the first and second attach rollers 17 and 18 in this way is due to the shape of the attachments M1 and M2 of the production equipment M. FIG. Engagement grooves M3 and M4 are formed in each of the opposing surfaces of the two attachments M1 and M2. After each attachment roller 17 and 18 enters between the attachments M1 and M2, the respective engagement grooves ( This is to make it easier to fit the M3, M4).

Referring to FIG. 1 again, the locking knob 16 is fitted to one side of the lower stage 7 so as to be movable. A screw is formed on the lower outer circumference of the locking knob 16 to be selectively fastened to the two locking grooves 28 and 29 formed in the table 27. That is, as shown in FIG. 6, a pair of locking grooves 28 and 29 are formed on the table 27 at intervals of 180 degrees, so that the fork stage S may be arranged in the loading / exporting direction of the cassette C. As shown in FIG. By rotating, the locking knob 16 is selectively fitted to each of the locking grooves 28 and 29. Here, in the present embodiment, the locking knob 16 is screwed into the locking grooves 28 and 29 for more robust locking. However, the locking knob 16 is simply inserted into the locking grooves 28 and 29. It is also possible.

Hereinafter, the operation of this embodiment configured as described above will be described in detail.

First, the operation of bringing the cassette C into the balance is as follows.

First, the trolley is attached to the production equipment (M). For this purpose, when the pedal 22 is pressed with a foot, the operation force is transmitted to the slider 20 via the link mechanism 21. The slider 20 moves along the attach axis 19 in the direction of the center line of the main body frame 1 while compressing the coil spring 23, so that the second attach roller 18 also moves in that direction as well.

Then, the first attach roller 17 enters into the locking groove M3 of the first attachment M1 while slightly rotating the front portion of the main frame 1 in the production equipment M direction. Since the first attach roller 17 is elastically supported in the outward direction, when the first attach roller 17 enters into the first attachment M1, the first attach roller 17 is strongly adhered into the locking groove M3 by the elastic force of the spring. At this time, since the second attach roller 18 is moved inward, the second attach roller 18 is not caught by the second attachment M2. Then, when the foot is stepped on the pedal 22, the slider 20 is moved in the opposite direction by the extension force of the coil spring 23, so that the second attach roller 18 moves the second attachment ( It enters into the locking groove M4 of M2).

In this way, the centerline of the main body frame 1 and the centerline of the production equipment M naturally coincide with each other, and the carry-in position is set correctly.

After the attachment operation is completed in this way, when the lever 13 is rotated, the rotational force is transmitted to the ball screw 11 through the timing belt 12, thereby rotating the ball screw 11. The cross truss 10 screwed to the ball screw 11 is raised as each link is pinched, and the lifting plate 3 is also raised. Then, the fork stage S is also raised, so that the upper stage 5 reaches the carrying position.

Then, when the intermediate stage 6 is pushed, the guide member 9 is advanced along the guide rollers 8, and when the upper stage 5 is pushed, the upper stage 5 is also advanced as above. In this way, the upper stage 6 is moved to the carrying position. Then, the cassette C is placed on the upper stage 6 and supported so as not to be rocked by the support block 26.

When the settlement of the cassette C is completed, the upper and middle stages 5 and 6 are retracted and returned on the lower stage 7. Then, when the lever 13 is rotated in the opposite direction to the above, the cross-shaped truss 10 is lowered while opening, so that the whole of the lifting plate 3 and the fork stage S is lowered to the initial height.

After the cassette C is brought into the trolley in this way, the handle 14 is pushed to the subsequent production equipment M. At this time, since the air cushion 24 is provided between the table 27 and the main body frame 1, the situation where the liquid crystal glass in the cassette C is damaged by the vibration from the road surface can be prevented beforehand.

After moving the trolley to the subsequent production equipment position, the fork stage S is raised and then advanced in the same manner as the carrying-in operation above to move the cassette C to the carrying out position, and then the cassette C is moved to the production equipment ( You can carry out to M).

Here, when the two production equipment (M) is arranged on both sides of the narrow passage, it is not possible to rotate the bogie in the narrow passage, and also the forward direction of the fork stage (S) in either direction, so at this time Similarly, rotate the entire fork stage S 180 °.

That is, after removing the locking knob 16 fastened to any one of the locking grooves 28, the whole fork stage S is rotated 180 degrees about the rotating shaft 15. As shown in FIG. Then, by locking the locking knob 16 to the other locking groove 29, it becomes possible to carry in / out the cassette C to / from the opposite production equipment.

According to the present invention as described above, since the heavy weight cassette C can be easily moved, the work efficiency can be improved. In particular, by employing the air cushion 24, it is possible to prevent a situation in which expensive liquid crystal glass due to shock during transportation or damage of fine particles is generated.

In particular, since the cart of the present invention is equipped with an import / export function, it is possible to prevent the liquid crystal glass from being damaged during the import / export operation, and the import / export position is set accurately, so that the operator There is no need to confirm the export position.

Claims (7)

In the liquid crystal glass transport cart equipped with the import / export function, Body frame, A caster installed at each corner of the bottom surface of the main body frame; A lifting plate disposed on the upper surface of the main body frame to move upward and downward; A drive mechanism installed in the main body frame and moving the lifting plate up and down; A fork stage installed on the lifting plate and configured with at least two stages in which a cassette containing a plurality of liquid crystal glasses is placed, each of which is slidably moved to a stage immediately below. stage) Carrying a liquid crystal glass transport trolley with import / export function characterized in that it comprises a. The method of claim 1, On the side of the main body frame, there is further attached to the attachment mechanism aligned to the pair of attachments provided in the production equipment, such that the center line between the production equipment and the main body frame, The attach mechanism is provided on the side of the main body frame facing the production equipment, the first and second attach roller fitted to the attachment; An attaching shaft, to which the second attach roller is movably fitted, installed in the main body frame perpendicular to the center line; A coil spring fitted to an outer circumference of an attach shaft portion adjacent to the center line with respect to the second attach roller, to elastically support the second attach roller in a direction opposite to the center line; A link mechanism having an upper end fixed to the second attach roller and having an intermediate portion bent at a predetermined angle; And a pedal installed at the bottom of the link mechanism. Carrying liquid crystal glass transport trolley with import / export function characterized in that it comprises. The method of claim 2, And the first attach roller is supported by a spring so as to receive elastic support obliquely at a predetermined acute angle from the center line to the outside thereof. The method of claim 1, The bottom stage of the fork stage is rotatably connected to the center of the lifting plate, the locking knob is fitted to one side of the bottom stage so as to be movable, the pair of locking grooves are selectively fitted A cart for carrying a liquid crystal glass with an import / export function, characterized in that formed on the upper surface of the table at equal intervals of 180 degrees. The method of claim 4, wherein The locking knob and the locking groove is a liquid crystal glass transport cart having an import / export function, characterized in that the screw coupling. The method of claim 1, The drive mechanism includes a ball screw disposed transversely to the bottom surface of the main body frame; A lever connected to one end of the ball screw; And a cross-shaped truss which is screwed to the outer circumference of the ball screw and is lifted according to the rotational direction of the ball screw, and several links cross each other in a cross shape, and an end portion and an intersection of each link are pivotally connected. Liquid crystal glass transport trolley with import / export function. The method of claim 1, An air cushion for relieving vibration during transportation is provided between the table and the main body frame.