KR100233807B1 - Automatic insertion device and its method for tv assembly easiness forming crt - Google Patents

Abstract

The present invention relates to a simple CRT automatic insertion apparatus and method for assembling a TV for automating some tasks in a production line for assembling a TV.

This apparatus uses a chain conveyor 11 for transporting the mask pallet 12 loaded with the mask 15 and a preparation platform 14 for waiting the CRT 16 near the chain conveyor 11. In the apparatus for inserting 16 into the mask 15, it is fixed at the point where the chain conveyor 11 and the preparation platform 14 intersect, and the transfer rail 22 is perpendicular to the chain conveyor 11 on the upper surface. The frame 21 is installed; A support plate 23 mounted on the transfer rail 22 so as to be slidable and receiving a driving force by the pinion motor 33; A support 24 mounted on the support plate 23 so as to be movable up and down by the operation of the air cylinder 34 and having a vacuum pad 28 fixed downward; A primary stopper (37) and a secondary stopper (38) which are installed at two points on the chain conveyor (11) so as to be raised / lowered and pause the mask pallet (12) to be conveyed; Alignment means mounted on a fixed plate (27) fixed to both sides of the chain conveyor (11) and aligning a mask (15) to be transferred to a reference position; A belt conveyor (31) mounted to constitute a part of an upper surface of the preparation platform (14) and sending a loaded CRT (16) to the front; And detection means for detecting the movement state of the mask pallet 12, the CRT 16, and the support plate 23.

Accordingly, the present invention is effective to improve productivity by inserting a relatively heavy CRT on the front mask of the TV in a production line for assembling a TV.

Description

Simple CRT automatic insertion device for TV assembly and its method

The present invention relates to a TV assembling apparatus and a process, and in particular, a simple CRT for TV assembling which automatically inserts a relatively heavy CRT onto a front mask of a TV in a production line for assembling a TV. An apparatus and a method thereof are provided.

In general, since home appliances such as TVs and VCRs are produced under a mass production system, there is a tendency to minimize the number of workers and to automate simple repetitive tasks in order to improve productivity. In the case of home appliances, certain parts still need to be relied on by hand, but in practice many assembly processes are automated.

Automation mechanisms applied in each process are roughly classified into electric methods using motors and solenoids, hydraulic and pneumatic methods using cylinders and valves, and the appropriate ones are selected in consideration of the characteristics of the work. You can also choose semi-automation to automate the necessary parts of each process in consideration of economics (productivity), or you can choose to fully automate the entire process.

1 is a block diagram showing a conventional CRT insertion apparatus in plan view.

Mounting the CRT 16 to the mask 15 in the TV assembly line is performed by the mask pallet 12 for carrying the mask 15 and the chain conveyor 11 and the CRT pallet 13 for carrying the CRT 16. ), Using the preparation platform 14 to temporarily wait for the CRT 16.

When a large number of CRTs 16 are transported by the CRT pallet 13, the cushions are supported by the preparation platform 14, the CRTs 16 are placed, and then the earth ship is mounted. When the mask 15 is placed on the cushion of the mask pallet 12 and moves on the chain conveyor 11, the CRT 16 of the preparation work 14 is inserted and then fixed through the rubber washer.

In such a configuration, when the CRT 16 is manually inserted onto the mask 15, two or three workers are put in, but productivity is lowered and the fatigue of the worker is increased, thereby making it an obstacle process.

Therefore, the present invention provides a simple CRT automatic insertion apparatus and method for TV assembly for improving productivity by automatically inserting a CRT, which is a relatively heavy product, on a front mask of a TV in a production line for assembling a TV. It aims to provide.

1 is a block diagram showing a conventional CRT insertion apparatus in a plan view.

2 is a perspective view showing the configuration of a device according to the invention.

3 is a flowchart for explaining the operation of FIG.

* Explanation of symbols for main parts of the drawings

11: Chain conveyor 12: Mask palette

13: CRT palette 14: preparation work

15: mask 16: CRT

21: frame 22: feed rail

23: support plate 24: support

25: front alignment plate 26: side alignment plate

27: fixed plate 28: vacuum pad

29: position detection sensor 31: belt conveyor

32: micro switch 33: pinion motor

34,35,36: Air cylinder 37: 1st stopper

38: secondary stopper 39: proximity switch

ST10-ST80: Operation stage

In order to achieve this object, the present invention provides a work platform 14 for waiting the chain conveyor 11 and the CRT 16 near the chain conveyor 11 for transporting the mask pallet 12 loaded with the mask 15. In the apparatus for inserting the CRT (16) to the mask (15) using; A frame 21 fixed to a point at which the chain conveyor 11 and the preparation work table cross each other, and a conveying rail 22 installed in a direction perpendicular to the chain conveyor 11 on an upper surface thereof; A support plate 23 mounted on the transfer rail 22 so as to be slidable and receiving a driving force by the pinion motor 33; A support 24 mounted on the support plate 23 so as to be movable up and down by an operation of the air cylinder 34 and having a vacuum pad 28 fixed downward; A primary stopper (37) and a secondary stopper (38) installed at two points on the chain conveyor (11) so as to be raised / lowered and for temporarily stopping the mask pallet (12) being conveyed; Alignment means mounted on a fixed plate (27) fixed to both sides of the chain conveyor (11) and aligning a mask (15) to be transferred to a reference position; A belt conveyor (31) mounted to constitute a part of an upper surface of the preparation platform (14) and sending a loaded CRT (16) to the front; And it provides a simple CRT automatic insertion device for TV assembly comprising a detection means for detecting the movement state of the mask pallet 12, the CRT 16, the support plate 23.

At this time, the alignment means is the front alignment plate 25 which is in pressure contact with the front surface of the mask 15 by the operating force of the air cylinder 35, and the pressure contact with the side of the mask 15 by the operating force of the air cylinder 36 A side alignment plate 26 is provided.

In addition, the detecting means includes a proximity switch 39 for detecting the passage of the mask pallet 12 on the chain conveyor 11 and a mask switch for detecting the completion of the transfer of the CRT 16 on the belt conveyor 31. 32, and a position detecting sensor 29 for detecting the forward and backward state of the support plate 23 on the conveying rail (22).

In addition, as another aspect of the present invention, a method for inserting the CRT 16 into the mask 15 using the chain conveyor 11 for transporting the mask 15 and the preparation work 14 for waiting the CRT 16. In the: CRT (16) preparation step (ST10) for driving and stopping the belt conveyor 31 when the CRT (16) is loaded on the preparation platform (14); CRT (16) transfer step (ST20) to sequentially perform the support 24 descending, vacuum pad 28 on, support 24 rise, support plate 23 moving operation; When the mast 15 is loaded, preparing the mask 15 for sequentially driving the chain conveyor 11, lowering the primary stopper 37, and raising the secondary stopper 38 (ST30); A mask 15 alignment step (ST40) which sequentially performs the chain conveyor (11) stop, the front alignment plate (25) operation, and the side alignment plate (26) operation operation; CRT (16) insertion step (ST50) of sequentially lowering the support 24, the operation of the vacuum pad 28 off when the steps ST20 and ST40 is completed; CRT (16) loading return step (ST60) for sequentially performing the support 24 rise, support plate 23 return operation; An alignment return step (ST70) of sequentially performing the side alignment plate 26 return and the front alignment plate 25 return operations; And it is characterized in that it comprises a workpiece replacement step (ST80) to sequentially perform the operation of the chain conveyor 11, lowering the secondary stopper 38, raising the primary stopper 37, stop the chain conveyor (11) Provides a simple CRT automatic insertion method for TV assembly.

At this time, the steps ST10 and ST20 are performed independently from the steps ST30 and ST40, and the step ST60 is performed independently from the steps ST70 and ST80.

EXAMPLE

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

2 shows a perspective view showing the construction of a device according to the invention.

According to the present invention, the chain conveyor 11 for transferring the mask pallet 12 loaded with the mask 15 and the preparation platform 14 for waiting the CRT 16 near the chain conveyor 11 are used. 16 is applied to the device for inserting the mask 15, the support plate 23, the support 24, the front alignment plate to the fixed structure such as the frame 21, the fixed plate 27, the conveying rail 22 ( 25), side structure plates 26, vacuum pads 28, and the like are provided with a plurality of air cylinders 34, 35, 36, belt conveyors 31, stoppers 37, 37, It is a structure that operates using a plurality of detection means.

The air cylinders 34, 35 and 36 provide actuation force for linearly moving the support 24, the front alignment plate 25, and the side alignment plate 26, respectively, and double acting for operating the operation rod in both directions. The single acting type can be used to operate in one direction or return to the spring. The double acting type is faster in both directions, but the control valve (not shown) is more complicated than the single acting type, depending on the application.

At this time, the frame 21 of the present invention is fixed at the point where the chain conveyor 11 and the preparation work table 14 intersects, and the conveying rail 22 is installed on the upper surface at right angles with the chain conveyor 11.

The frame 21 is completed by welding or bolting a U-shaped or U-shaped steel having a thickness of 5 mm or more, and minimizing the interference with the mask 15 and the CRT 16 to shorten the time required for the work. Install at height.

The transfer rail 22 connects from the point where the CRT 16 is placed on the preparation platform 14 to the point where the CRT 16 is inserted into the mask 15 in the chain conveyor 11. The conveying rail 22 can also use plastic injection molding to reduce operating noise.

In addition, the support plate 23 of the present invention is mounted on the transfer rail 22 so as to be slidable, and receives a driving force by the pinion motor 33.

The support plate 23 is equipped with an air cylinder 34, pinion motor 33, the support 24 described later. The reciprocating motion of the support plate 23 can be carried out in such a way that the rack tooth is attached to the feed rail 22 and the pinion gear of the pinion motor 33 is engaged.

The motor used for the pinion motor 33 is preferably a low speed, high torque servo motor.

In addition, the support 24 of the present invention is mounted on the support plate 23 so as to be movable up and down by the operation of the air cylinder 34, the vacuum pad 28 is fixed in the downward direction.

The support 24 is a place where the vacuum pad 28 and a pneumatic tube connected thereto are mounted, and move together with the support plate 23, so that up, down, left, and right movements are possible. The lower portion of the support 24 is equipped with a wheel to reduce the sliding resistance.

The vacuum pad 28 is used as a means for lifting the CRT 16 using the vacuum pressure formed on the inner surface after contacting the CRT 16. The vacuum pad 28 uses a wear-resistant urethane rubber material and is connected to a vacuum pump (not shown).

In addition, the present invention uses a primary stopper 37 and a secondary stopper 38 which are installed to rise / fall at two points on the chain conveyor 11 and temporarily stop the mask pallet 12 to be transferred.

The primary stopper 37 and the primary stopper 38 use a kind of air solenoid to protrude upward while the operation rod protrudes upward to block the movement of the mask pallet 12, and when the air is discharged, the operation rod. Is returned to its own spring force to release the blocking state of the mask pallet (12).

It is also possible to use solenoids which are electrically driven instead of the air solenoids.

In addition, the present invention uses an alignment means that is mounted on the fixed plate 27 is fixed to both sides of the chain conveyor 11, the alignment of the mask 15 to be transferred to the reference position.

The alignment means allows the mask 15, which is conveyed on the chain conveyor 11, to be encountered at a predetermined position with the CRT 16, which is conveyed by the vacuum pad 28 interlocked with the support plate 23.

At this time, the alignment means is the front alignment plate 25 which is in pressure contact with the front surface of the mask 15 by the operating force of the air cylinder 35, and the pressure contact with the side of the mask 15 by the operating force of the air cylinder 36 A side alignment plate 26 is provided.

When the front alignment plate 25 is operated, the mask 15 on the mask pallet 12 stops moving forward, and when the side alignment plate 26 is operated, the mask 15 contacts the front alignment plate 25. It is temporarily fixed at the reference position under pressure from the side.

Air cylinders 35 and 36 as well as the front alignment plate 25 and the side alignment plate 26 are mounted on the fixed plate 27. The fixing plate 27 on which the front alignment plate 25 is mounted may be used as one surface of the reference position of the mask 15.

The belt conveyor 31 of the present invention is mounted to constitute a part of the upper surface of the preparation platform 14, and sends the loaded CRT 16 to the front.

The belt conveyor 31 may be driven by a motor and directly load the CRT 16 without using a cushion as in the prior art by using a wear-resistant and elastic urethane rubber material.

Moreover, this invention uses the detection means which detects the movement state of the mask pallet 12, the CRT 16, and the support plate 23. As shown in FIG.

The detecting means is used for generating an input signal for performing sequential control according to the present invention.

At this time, the detecting means includes a proximity switch 39 for detecting the passage of the mask pallet 12 on the chain conveyor 11 and a micro switch 32 for detecting the completion of the transfer of the CRT 16 on the belt conveyor 31. And a position detecting sensor 29 for detecting the forward and backward state of the support plate 23 on the conveying rail 22.

The proximity switch 39 generates a predetermined signal in a non-contact manner from the moment when the mask pallet 12 reaches the primary stopper 37 until it passes completely through the primary stopper 37. Instead of the proximity switch 39, it is also possible to use a contact type micro switch, in which case the micro switch is installed to be in contact with the bottom surface of the mask pallet 12.

The micro switch 32 is used as a signal for stopping the belt conveyor 31 for detecting that the CRT 16 moving on the belt conveyor 31 comes to a predetermined position. The predetermined position at this time coincides with the position where the vacuum pad 28 is in the standby state.

The position sensor 29 is used to detect which position the support plate 23 reciprocating between two predetermined points is at present. The position sensor 29 may use any type of contact such as a micro switch or a non-contact type such as an optical sensor or a proximity switch.

In addition, the present invention receives the input of the proximity switch 39, the micro switch 32, the position sensor 29, the air cylinder 34, 35, 36, stopper 37, 38, pinion motor The control panel (not shown) which controls to send predetermined | prescribed output to (33) side is used.

The control panel is an air cylinder (34), 35 (36), a stopper (37) (38) and the like connected to the solenoid valve for opening and closing the external compressed air, and the pinion motor (33) connected to a relay for controlling power. It has a sequence control circuit that can properly control sequentially.

Although not shown in the drawing, such a control panel can be configured as a microcomputer circuit, or a commercially available programmable logic controller (PLC) can be used for sequence control.

3 is a flowchart for explaining the operation of FIG.

In another aspect, the present invention provides a method of inserting the CRT 16 into the mask 15 using a chain conveyor 11 for transporting the mask 15 and a preparation platform 14 for waiting the CRT 16. Apply, CRT (16) preparation step, CRT (16) transfer step, mask (15) preparation step, mask (15) alignment step, CRT (16) insertion step, CRT (16) loading return step, alignment return step It can be roughly divided into eight steps, such as work piece replacement step.

At this time, in the preparation step (ST10) of the CRT (16) of the present invention, when the CRT (16) is loaded on the preparation table 14, the belt conveyor 31 is driven and stopped.

The step ST10 is a step in which the belt conveyor 31 is automatically stopped when the CRT 16 placed on the preparation platform 14 by the operator touches the micro switch 32 while being moved to the belt conveyor 31. . When the CRT 16 is lifted by the vacuum pad 28, the contact state of the microswitch 32 is released, so that the belt conveyor 31 is driven again to transfer the CRT 16.

In addition, in the transport step (ST20) of the CRT (16) of the present invention, the support 24 is lowered, the vacuum pad 28 is turned on, the support 24 is raised, and the support plate 23 is moved in sequence.

The step ST20 is a step of lifting the CRT 16 using the vacuum pad 28 and then moving it to a predetermined reference position in the upward direction of the chain conveyor 11. Subsequent operations are associated with steps ST30 and ST40, which will be described later, and thus maintain a hold state after performing the last operation of the series of operations.

In the mask 15 preparation step (ST30) of the present invention, when the mask 15 is loaded, the chain conveyor 11 is driven, the primary stopper 37 is lowered, and the secondary stopper 38 is sequentially raised. .

In step ST30, the chain conveyor 11 is moved and the mask 15 waiting at the primary stopper 37 enters the downward direction of the frame 21, and then is paused again at the secondary stopper 38. FIG. Step. When the entrance of the mask 15 is completed, the signal of the proximity switch 39 is inverted until the next mask 15 reaches the primary stopper 37. This signal is used to advance the signal to proceed to the next step ST40. Do it.

In the mask 15 alignment step ST40 of the present invention, the chain conveyor 11 is stopped, the front alignment plate 25 is operated, and the side alignment plate 26 is sequentially operated.

The step ST40 is to align the mask 15 to be at a predetermined reference position, so that the alignment state is maintained until the CRT 16 is inserted from the top of the frame 21. Since the subsequent operation is associated with the above-described step ST10 and step ST20, even if the last operation of the series of operations is completed, the operation does not proceed to the next step alone.

In addition, in the inserting step ST50 of the present invention, when the steps ST20 and ST40 are completed, the support 24 descends and the vacuum pad 28 is sequentially performed.

The step ST50 is a step of placing the CRT 16 on the mask 15 having reached the reference position, and the completion of both the step ST20 and the step ST40 is the input of the position sensor 29 and the air cylinder 35 ( It can be seen from the output of the solenoid valve controlling 36).

Since the step ST50 is a very important step and is easy to cause a failure, the lowering of the support 24 and the operation of the vacuum pad 28 are accurately divided, and the speed at which the vacuum pad 28 is turned off is appropriately delayed.

In the CRT 16 loading return step ST60 of the present invention, the support 24 is raised and the support plate 23 is returned.

The step ST60 is a step circulating to step ST10 for returning the support 24 and the support plate 23 to the original state to lift the next CRT 16 that is waiting on the preparation platform 14.

In this step, it is preferable from the viewpoint of productivity improvement that the moving speed of the support plate 23 and the support 24 is faster than the above-described step ST20.

Further, in the alignment return step ST70 of the present invention, the side alignment plate 26 return and the front alignment plate 25 return operations are sequentially performed.

The step ST70 is a step of releasing the pressing force acting on the mask 15 so that the mask 15 into which the CRT 16 is inserted can move on the chain conveyor 11 and proceed to the next process.

In addition, in the workpiece replacement step ST80 of the present invention, the chain conveyor 11 is driven, the secondary stopper 38 is lowered, the primary stopper 37 is raised, and the chain conveyor 11 is stopped.

The step ST80 is to allow the inserted mask 15 and the CRT 16 assembly to resume movement on the chain conveyor 11 while the next mask 15 comes to the primary stopper 37 and waits. . When the last operation of the above operation is completed, the flow returns to the above-described step ST30.

At this time, the steps ST10 and ST20 are performed independently from the steps ST30 and ST40, and the step ST60 is performed independently from the steps ST70 and ST80.

Since the steps ST10 and ST20 are prepared in the state immediately before inserting the CRT 16, the process is performed independently of the transfer of the mask 15, and the steps ST30 and ST40 fix the mask 15 to a reference position. Since the step is to be carried out independently of the transfer of the CRT (16).

Since step ST60 is a step of returning to prepare the next CRT 16, the step ST60 is performed independently of steps ST70 and ST80 of returning to prepare the next mask 15.

In this way, the independent progress of the parts except for the step ST50 is more complicated to control than connecting all the steps in one sequence, but it has the advantage of reducing the assembly labor.

Meanwhile, although not shown in the drawing, it is preferable that the control panel has means for temporarily stopping each of the above-described steps or preparing them one by one in preparation for an unexpected situation.

As can be seen through the above embodiment, the simple CRT automatic insertion apparatus for TV assembly and the method of the present invention automatically insert the CRT, which is relatively heavy, on the front mask of the TV in the production line for assembling the TV. It is effective to improve the productivity to be made.

In addition, it is possible to reduce the fatigue of the operator due to the handling of heavy materials to prevent safety accidents, and to reduce the defect of the assembly process.

In addition, although partial automation, the advance system for automating the whole process in the future can be seen to be solved.

While the invention has been shown and described with respect to certain preferred embodiments, it will be understood that the invention can be variously modified and modified without departing from the spirit or scope of the invention as set forth in the following claims. Those skilled in the art can easily know that.

Claims (5)

CRT (16) using the chain conveyor 11 for transporting the mask pallet 12 loaded with the mask (15) and the preparation platform (14) for waiting the CRT (16) near the chain conveyor (11) In the device to be inserted into the mask (15): fixed to the point where the chain conveyor 11 and the preparation platform 14 is intersected, the conveying rail 22 is installed on the upper surface in a direction perpendicular to the chain conveyor 11 Frame 21; A support plate 23 mounted on the transfer rail 22 so as to be slidable and receiving a driving force by the pinion motor 33; A support 24 mounted on the support plate 23 so as to be movable up and down by the operation of the air cylinder 34 and having a vacuum pad 28 fixed downward; A primary stopper (37) and a secondary stopper (38) which are installed at two points on the chain conveyor (11) so as to be raised / lowered and pause the mask pallet (12) to be conveyed; Alignment means mounted on a fixed plate (27) fixed to both sides of the chain conveyor (11) and aligning a mask (15) to be transferred to a reference position; A belt conveyor (31) mounted to constitute a part of an upper surface of the preparation platform (14) and sending a loaded CRT (16) to the front; And detecting means for detecting a movement state of the mask palate (12), the CRT (16), and the support plate (23). According to claim 1, wherein the alignment means is a front alignment plate 25 in pressure contact with the front surface of the mask 15 by the operating force of the air cylinder 35, and the side of the mask 15 by the operating force of the air cylinder 36 The simple type CRT automatic insertion device for TV assembly, characterized in that it is provided with a side alignment plate 26 in pressure contact with the side that is in pressure contact. The method according to claim 1, wherein the detecting means includes a proximity switch (39) for detecting the passage of the mask pallet (12) on the chain conveyor (11), and a transfer completion of the CRT (16) on the belt conveyor (31). And a microsensor (32) and a position detecting sensor (29) for detecting the forward and backward states of the support plate (23) on the conveying rail (22). In the method of inserting the CRT 16 into the mask 15 using the chain conveyor 11 for conveying the mask 15 and the preparation work 14 for waiting the CRT 16, the CRT 16 is ready. CRT (16) preparing step (ST10) for driving and stopping the belt conveyor 31 when loaded on the work table (14); CRT (16) transfer step (ST20) to sequentially perform the support 24 descending, vacuum pad 28 on, support 24 rise, support plate 23 moving operation; When the mask 15 is loaded, preparing the mask 15 for sequentially driving the chain conveyor 11, lowering the primary stopper 37, and raising the secondary stopper 38 (ST30); A mask 15 alignment step (ST40) which sequentially performs the chain conveyor (11) stop, the front alignment plate (25) operation, and the side alignment plate (26) operation operation; CRT (16) insertion step (ST50) of sequentially lowering the support 24, the operation of the vacuum pad 28 off when the steps ST20 and ST40 is completed; CRT (16) loading return step (ST60) for sequentially performing the support 24 rise, support plate 23 return operation; An alignment return step (ST70) of sequentially performing the side alignment plate 26 return and the front alignment plate 25 return operations; And it is characterized in that it comprises a workpiece replacement step (ST80) to sequentially perform the operation of the chain conveyor 11, lowering the secondary stopper 38, raising the primary stopper 37, stop the chain conveyor (11) Easy insertion of simple CRT for TV assembly. The method of claim 1, wherein the steps ST10 and ST20 are performed independently from the steps ST30 and ST40, and the step ST60 is performed independently from the steps ST70 and ST80. Way.