KR20060110670A - Automatic conveyor system of line to the assemble an vehicle and controll method thereof - Google Patents

Abstract

An automatic transferring system of a vehicle assembling/painting line and a control method thereof are provided to quickly make control responses and smoothly proceed on the assembling/painting line by driving at different speeds at each region, to improve durability and reduce noise, and to enhance spatial efficiency by continuously moving components at plural predetermined places. An automatic transferring system of a vehicle assembling/painting line comprises a circulation rail(2) having a continuous circulation path according to action of divergent/convergent rail switching devices(16,18) operated by pneumatic pressure; carrier units operated selectively via a divergent rail(12) branched from the circulation rail to load a vehicle body and assemble/paint a vehicle; plural position detecting means(LS1~LSn) sensing position of the carrier units; a control unit inputting the sensed values and regulating plural stopper units(SU1~SUn), the switching devices, plural friction transferring means, and an air compressor according to computed values; plural linear unit friction transferring means(14a1~14an) and plural curved unit friction transferring means(14b1~14bn) installed at plural positions on linear and curved rails of the circulation and divergent rails; and the plural stopper units installed on a predetermined position of the circulation rail and the divergent rail to regulate operation according to necessity of the carrier units.

Description

Automatic conveyor system of line to the assemble an vehicle and controll method

Figure 1a is a block diagram showing the electrical configuration of the control unit applied to the present invention,

1b is an overall configuration perspective view of an automatic transfer system according to the present invention;

2a and 2b is a partial configuration perspective view and a plan view of the linear frictional transfer means applied to the automatic transfer system according to the present invention;

3a and 3b is a partial configuration perspective view and plan view of the friction portion friction transfer means applied to the automatic transfer system according to the present invention;

4a and 4b and 4c and 4d are a partial configuration perspective view and a plan view of a branch rail switching unit applied to the automatic transfer system according to the present invention;

5a and 5b and 5c and 5d is a partial configuration perspective view and a plan view of a branch rail switching unit applied to the automatic transfer system according to the present invention;

6 and 7a to 7c is a side view for showing the configuration of the stopper unit applied to the automatic transfer system according to the present invention,

8A and 8B and 9A to 9D are partial perspective views and one side view of a carrier unit applied to the automatic transfer system according to the present invention;

10A and 10B are flowcharts illustrating a method for controlling an automatic transfer system according to the present invention.

The present invention relates to an automatic transfer system for an automobile assembly / painting line. More particularly, in the assembly and painting of an automobile online, the trolley for mounting an assembly on a rail is applied to each assembly / painting process. The present invention relates to an automatic transfer system for serial transfer.

In recent years, automobiles are usually produced according to an online manufacturing method in which a frame is mounted on a trolley, and various kinds of accessories are mounted or assembled / painted into the frame while continuously transported by the process of assembly / painting.

That is, automobiles are usually produced by assembling and painting sequentially through a continuous production line, and the vehicle assembly / painting line as such a continuous production line usually consists of three stations.

As the first station, a positioning station is provided which supports the body (frame) of the vehicle on the pedestal, controls the position of the pedestal, and adjusts the position of the body. As the next station, the engine placed on the pallet and A docking station is constructed in which an operation of coupling an accessory such as a suspension assembly to a body is performed.

In addition, in the third fastening station, the work is performed by fastening the fasteners attached to the body by screws.

Further, the positioning device and the loading device in the positioning station as described above, the docking device and the slide device in the docking station, the pallet conveying device, the robot in the fastening station and the like are connected to the sequence control unit electrically connected thereto. Drive under control.

In addition, the chain automatic transfer action must be performed at all stations as described above. For such a chain automatic transfer, a plurality of struts are installed in a horizontal state at a predetermined height on the ground. It is possible to use a monorail conveying device configured to connect the moving head and the carrier unit which are moved by the rolling action of the driving wheel on the monorail, and to control the driving means for driving the driving wheel of the moving head in the control unit.

In addition, it is possible to use a carrier moving conveyor system to perform a series of automatic transfer operations at all stations, which work with a working position for each process performing a plurality of processes. Can be divided into a line and a return line which returns after finishing work, and according to the driving method on such a series of circulation lines, a belt conveyor / chain conveyor / roller conveyor / Trolley conveyors and the like are widely used.

In particular, chain conveyor is able to exert reliable conveying power and excellent durability, and is suitable for transporting large objects. It is mainly applied to assembly / painting lines of automobiles, electric / electronic products, and transmits power to the chains through a number of rollers. By driving the rollers, a continuous conveying operation is performed.

As an example of the chain conveyor as described above, there is a 'conveyor system' disclosed in the Republic of Korea Patent Office Patent Registration (Registration No .; 20-0071284), such a 'conveyor system', a pair of left and right rails connected by a plurality of crossbars Chain is installed close to the floor, guide rails are installed at the intermediate points between the pair of rails, and sprockets having poles are installed at both ends of the guide rails, so that the chain inherent in the U-shaped grooves of the guide rails. It is configured to wind, and further comprises a pre-conveyor device connected by a locking pin and a driven conveyor device connected corresponding to the pole of the sprocket.

Conveyor systems, on the other hand, require unique characteristics such as economy, durability, quietness, etc., because they have a circulation mechanism that returns to the beginning at the end and allows continuous transport.

By the way, the conventional chain conveyor system as described above is driven at a uniform speed in each section, it is not possible to secure a sufficient stall time in any particular process section, such as a painting process that takes a relatively long process time, As a result, the smooth assembly / painting process, such as slow response of the entire system, is adversely affected.

In addition, the chain may be drooped, thus causing wear damage, which may not be able to satisfy durability, and at the same time, may result in deterioration of quietness due to noise generation. There was a problem of structure / management that was not efficient and economical.

For example, if the chain is peeled off, the entire production line must be shut down, and the economics required for the conveyor system can not be met due to the difficulty of the repair / repair work, the time required for work, and the waste of manpower and parts. There will be no.

The present invention is to solve the problems associated with the prior art as described above, the object of the present invention is to drive at a separate speed according to the situation in each section, any particular process that takes a relatively long process time It is to provide an automatic transfer system of automobile assembly / painting line that can allow sufficient stall time in the process part of the process, and thus speeds up the control response speed and facilitates the smooth assembly / painting process. .

Another object of the present invention is to provide an automatic transportation system of an automobile assembly / painting line, which can solve the problem of impairment of durability due to sagging of chains and wear damage, and the problem of impairment of quietness due to noise. There is this.

According to the present invention, even if it is separately installed in a predetermined number of places in the transfer line, the chain transfer action is possible and the volume and weight are small, so that the inefficiency in the layout space can be eliminated, and the economic structure is provided, and the economical repair / Another aim is to provide an automated transport system for vehicle assembly / painting lines, allowing maintenance of maintenance.

That is, another object of the present invention is to block the phenomenon that the chain is peeled off at the source, thus facilitating the repair / maintenance work that is performed after the entire production line is shut down and the working time. In addition to the short time, it is to provide an automatic transfer system that can meet the economics required for the conveyor system by minimizing the consumption of manpower and parts in accordance with the repair / maintenance work.

In order to achieve the above object, the present invention, the circulation rail is made to have a chain circulation path; A branch rail provided to branch and join from the circulation rail; A plurality of linear portion friction transfer means provided at a plurality of positions on a straight rail of the circulation rail and at least one position on a straight rail of the branch rail; A plurality of curved portion friction transfer means provided at a plurality of positions on a curved rail of the circulation rail and at least a plurality of positions on a curved rail of the branch rail; A branch rail switching device unit installed at a divided position of the circulation rail and the branch rail; A joining rail switch unit installed at a joining position of the circulation rail and the branch rail; An air compressor for supplying compressed air as a driving source to the branch rail switching unit and the joining rail switching unit; A carrier unit operating on the circulation rail and the branch rail; A plurality of stopper units provided on the circulation rails and the branch rails at the corresponding positions so as to regulate the operation of the carrier unit as necessary; A plurality of position detecting means provided at each of a plurality of corresponding portions of the circulation rail and the branch rail so as to detect the position state of the carrier unit; It includes a plurality of stopper unit and the switching unit and the control unit for controlling the operation of the plurality of friction transfer means and the air compressor according to the value received and calculated from the plurality of position detection means input; Provides automatic transfer system of automobile assembly / painting line.

The circulation rail and the branch rail are arranged in parallel at a constant height on the ground, and are a pair of inner and outer sides that are spaced apart from each other, and are made of 'c' shaped steel, and the branching and confluence portions of the circulation rail The outer rail may be disconnected, and each end thereof may be integrally connected to the inner and outer rail ends of the branch rail.

Each of the plurality of linear friction transfer means includes a mounting end bolted to one side of the rail support bracket which is integrally formed with the rail to support the rail; A 'c' shaped steel coupled to the mounting end such that inner ends thereof are perpendicular to each other; A rotating member hinged to an inner end of the 'ㄷ' shaped steel; A shaft member for connecting the outer end of the 'ㄷ' shaped steel and the rotating member in a fixed position variable state; A spring member wound around the shaft member so as to grip the pivot member rotated from a 'c' shaped steel; Drive means provided with a servo motor whose rotating shaft penetrates the upper plate portion of the rotating member; It may include a friction wheel mounted on the rotation shaft of the servomotor.

Each of the plurality of curved portion friction transfer means may include: another mounting end bolted to one side of another rail support bracket which is integrally formed with the rail to support the rail; A hinge mounting end coupled to an upper end of the other mounting end so as to be perpendicular to each other; A hinge coupled to the hinge mounting end, the rotating member being composed of a primary rotating member and a secondary rotating member connected to each other in a hinged state; A torsion spring mounted to the hinge mounting end and the primary rotating member to give elasticity to return the primary rotating member to its original position; An outer end of the other 'ㄷ' shaped steel constituting the primary rotating member and a second rotating member in a fixed position variable state; Another spring member wound around the other shaft member so as to harden the secondary pivot member rotated from the other 'ㄷ' shaped steel; Another driving means provided with another servomotor mounted to the secondary rotating member so that the rotating shaft penetrates the upper plate portion of the secondary rotating member; Another friction wheel mounted on a rotation shaft of the other servo motor; An 'U' rod member extending to one side lower portion of the primary rotation member and being bent in a 'U' shape so that an end height thereof corresponds to an end height of a rotation shaft of the servomotor; A lever member extending horizontally from the end of the 'U' rod member; It may be to include a tension roller is rotatably mounted to the end of the lever member.

The branch rail switching device unit extends and engages the outer rail of the circulation rail and the inner rail of the branch rail, forms a hinge portion at the extension coupling portion, and mounts the switch member to the hinge portion in a rotatable state. The lever member may be extended to an outer surface of the arc portion of the member, and an air cylinder may be mounted between the lever member and the outer rail of the circulation rail.

The joining rail switching unit, the outer rail of the circulation rail and the inner rail of the branch rail to extend and form another hinge portion in the extension coupling portion, the other hinge portion is mounted to the other switch member in a rotatable state, The other lever member may be extended to the outer side surface of the arc part of the other switch member, and another air cylinder may be mounted between the other lever member and the outer rail of the circulation rail.

The carrier unit includes a plurality of pairs of drive roller groups disposed in an inner space formed by an inner and outer pair of 'c' shaped steels facing each other, and the four drive rollers constituting each group are lower, front, rear, left, and right. At least a plurality of movable members mounted on the movable member, at the center of each of the movable members, at the center of the movable rollers, at the front and rear of the driving rollers, and at the pivoting members hinged to the upper and rear positions of the movable members; Friction bars connecting neighboring rotating members, boss members fixedly formed at the center of each movable member, a bogie frame in which hinge pins are rotatably coupled to the boss members, and a vehicle body. In order to restrain the corresponding lower portion of the frame in a seating state, the clipper is fixed to the corner portion of the front, rear, left and right of the balance frame; It can be.

Each of the plurality of stopper units has a cam bracket having a plurality of cam holes provided on the circulation rail and the branch rail at a corresponding position so as to restrict the operation of the carrier unit as necessary. And a stopper having a plurality of cams penetrating the camhongs, and another air cylinder for elevating the stopper front end by causing the entire stopper to be pulled or pushed forward and backward.

Each of the plurality of position detecting means is installed at each of a plurality of corresponding portions of the circulation rail and the branch rail, and the operation is moved between the operation members by a locking member fixed to one of the movable members of each of the plurality of carriers. It may be a limit switch that detects the position of and inputs the detected value to the control unit.

A server body, a server input device, a server output device, a warning display device, and a plurality of photosensors electrically connected to the control unit may be further provided.

The present invention also provides a method comprising: a first step of starting and initializing all registers; A second step of receiving detection values from all limit switches and storing the input values in each of a plurality of randomly named registers; Determining a location of each of the plurality of carriers according to whether there is a stored value in each of the plurality of registers; A fourth step of receiving an indication value output from the server and storing the value in a corresponding register; A fifth step of receiving detection values from all photosensors and storing the values in respective registers; Provided is a drive control method for an automatic transport system for a vehicle assembly / painting line comprising a sixth step of selectively operating the friction transfer means and the switching device portions at a corresponding position and feeding back to the second step.

In the automatic transfer system drive control method as described above, the initial operation is performed by initializing the values of the registers 'L1' to 'Ln' which are arbitrarily named in the first step.

Next, in the second step, an operation for storing each of the input values from the 1st to nth limit switches into the arbitrarily named registers 'L1' to 'Ln' is executed.

In the third step, it is determined whether there is a stored value in the registers 'L1' to 'Ln', and the positions of the plurality of carriers are determined according to the result.

Meanwhile, in the fourth step, the instruction value output from the server is received and stored in the corresponding register.

The server, for example, allows each uniquely numbered carrier to be moved to a given process, and reads the process path designations for all carriers and stores them in a randomly named register.

In the fifth step, the detection values from all the photosensors are received, and the values are stored in each of the correspondingly named registers and transmitted to the server at the same time, so that the mounting state and the assembly / painting state of the components corresponding to each carrier are taken into consideration. To allow work to proceed.

In addition, as a result of analyzing the information received in the fifth step, the mounting state of the component and the assembly / painting state are calculated to be poor, or when there is an input signal corresponding to the operation value, the corresponding message is output to the speaker or warned at the same time. The lamp can also be activated.

In addition, the sixth step is to selectively operate the switching device portion of the corresponding position, for example, by controlling the operation of the device portion when the corresponding carrier is located in the branch rail switching device, according to the specified value It is to enable the carrier of to proceed to the path.

That is, if there is an input storage value from the limit switch installed at the front part of the branch rail switching unit, and the process path assigned to the carrier at this time is, for example, 'A' path, the circulation rail is opened according to the designated value. By driving the branch rail switching unit counterclockwise, the carrier enters the circulation rail without passing through the branch rail.

On the contrary, if the process path assigned to the carrier when there is an input storage value from the limit switch provided at the front part of the branch rail switching unit is 'B', for example, the branch rail is opened according to the designated value. By driving the switching unit clockwise, the carrier enters the branch rail without passing through the circulation rail.

In addition, if there is an input storage value from the limit switch provided at the front part of the joining rail switching unit, and the process path designated to the carrier at this time is the 'A' path, Therefore, the carrier is to continue to operate from the circular rail to the circular rail.

On the contrary, if the process path designated for the carrier when the input storage value from the limit switch installed at the front part of the confluence rail switch part is the 'B' path, for example, by driving the confluence rail switch part clockwise, The carrier is to enter the circular rail from the branch rail.

In addition, when there is a position movement operation signal for each carrier corresponding to each of the carriers, a plurality of linear friction transfer means and curved friction transfer means of the position are selectively driven to control the respective carriers according to local separate control. After the transfer operation is made, it is executed by feeding back to the initial stage.

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

Figure 1a is an electrical configuration of the control unit of the present invention, Figure 1b is a schematic configuration for showing the mechanical configuration of the automatic transfer system according to the present invention.

As shown, the present invention includes a circulation rail 2 provided to have a chain circulation path, and a branch rail 12 that can be branched and joined therefrom.

The circulation rails 2 and the branch rails 12 are arranged in parallel at a predetermined height on the ground, and are a pair of inner and outer sides that are spaced apart from each other and are 'c' shaped steels 22a and 24a ( 22b) and 24b, and the outer rail 22a of the circulation rail 2 was disconnected at the branch part and the joining part, and each end thereof was formed at the inner and outer rails 22b of the branch rail 12 ( 24b) It is connected integrally with the edge part (refer FIG. 2A-FIG. 5D).

A plurality of linear portion friction transfer means 14a1 to 14an are provided at any of the linear rail portions of the circulation rail 2 and the branch rail 12 as described above, and the circulation rail 2 and the branch. A plurality of curved portion friction conveying means 14b1 to 14bn are provided at any of the curved rail portions of the rail 12 so that the conveying force of the carrier is exerted by the frictional force.

That is, each of the plurality of linear frictional transfer means 14a1 to 14an is provided with the rails 22a and 24a to support the rails 22a and 24a (as shown in FIGS. 2A to 2B). The mounting end 28a is bolted to one side of the rail support bracket 26a to be integrally formed, and the mounting end 28a and the inner end of the other 'c' shaped steel 30a are coupled to be perpendicular to each other, The inner end of the 'c' shaped steel 30a is composed of a hinge coupled to the rotating member (74a) (74b) 32a.

Each of the plurality of linear friction transfer means 14a1 to 14an further includes a tension device 34a, a driving means 42a, and a friction wheel 46a. The outer end of the 'c' shaped steel 30a and the rotating members 74a, 74b, 32a are connected to the shaft member 36a under a fixed position variable state, and a spring member 38a wound around the shaft member 36a is provided. By being provided, the rotating members 74a, 74b, 32a pivoted from the 'c' shaped steel 30a are supported.

In addition, the driving means 42a is provided on the rotation members 74a, 74b and 32a so that the rotation shaft penetrates the upper plate portions of the rotation members 74a, 74b and 32a so that the friction wheel 46a is mounted. It is mounted.

Each of the plurality of curved portion friction transfer means 14b1 to 14bn is integrally formed with the rails 22a and 24a to support the rails 22a and 24a (as shown in FIGS. 3A to 3B). The other mounting end 28b is bolted to one side of the other rail supporting bracket 26b, and the hinge mounting end 29b is coupled to the upper end of the mounting end 28b so as to be perpendicular to each other, and the hinge mounting end 29b. ) Is hinged to the other rotating members 74a, 74b, 44b.

The other rotating members 74a, 74b and 44b have a structure in which primary rotating members 74a, 74b and 30b and secondary rotating members 74a, 74b and 32b are hinged to each other. It is configured such that the primary pivot members 74a, 74b, 30b from the hinge mounting end 29b are returned to their original positions by the elasticity released from the other tensioning device of the torsion spring 48b.

In addition, the secondary rotation members 74a, 74b, 32b are rotatably connected from the other 'c' shaped steel 30b constituting the primary rotation members 74a, 74b. Each of the plurality of curved portion friction transfer means 14b1 to 14bn also has a structure that further includes another tension device 34b, a drive means 42b, and a friction wheel 46b.

That is, the another tension device 34b moves the outer end of the other 'c' shaped steel 30b and the secondary pivot members 74a, 74b, 32b to another shaft member 36b under a fixed position variable state. And a second spring member 38b wound around the other shaft member 36b, thereby being rotated from the other 'c' shaped steel 30b. It is configured to be strong.

In addition, the driving means 42b also has the rotational shaft 36b passing through the upper plate portions of the secondary pivot members 74a, 74b and 32b so that the other friction wheel 46b is mounted. ) 74b and 32b.

In addition, each of the plurality of curved portion friction transfer means 14b1 to 14bn as described above includes a U-shaped rod member 50, lever members 62a, 52, and a tension roller 54. Is done.

That is, the primary rotating members 74a, 74b and 30b are provided with a rod member 50 which is bent in a 'U' shape so that the end height thereof corresponds to the end height of the rotation shaft of the servomotor 42b. It extends to the lower side of one side, and the lever member 62a, 52 is extended horizontally coupled from the end of the 'U' shaped rod member 50, and to the end of the lever member (62a) (52) The tension roller 54 is rotatably mounted to allow the tension roller 54 to bring the other friction wheel 46b closer to the carrier units C1 to Cn (C1) to (Cn). Thus, the carrier units C1 to (Cn) (C1) to (Cn) can be moved in position without losing frictional force.

In addition, a branch rail switching device unit 16 is disposed at the divided position of the circulation rail 2 and the branch rail 12, and a joining rail switching unit is located at the joining position of the circulation rail 2 and the branch rail 12. FIG. Each of 18 is provided (see Figs. 4A to 5D).

The branch rail switching unit 16 (as shown in Figures 4a to 4d, extending the outer rail 22a of the circulation rail 2 and the inner rail 24b of the branch rail 12, The hinge portion is formed at the extension coupling portion, and the switch member 60a is mounted in the hinge portion in a rotatable state.

The branch rail switching unit 16 extends the lever member 62a on the outer side surface of the arc of the switch member 60a, and between the lever member 62a and the outer rail of the circulation rail 2. By mounting the air cylinder 64a and rotating the switch member 60a through the lever member 62a in accordance with the rod stretching action of the air cylinder 64a, the switch member 60a causes the circulation rail 2 or the like. It is made to act to selectively open the branch rail 12.

In addition, the above-mentioned joining rail switching unit 18 also includes an outer rail 22a of the circulation rail 2 and an inner rail 24b of the branching rail 12 (as shown in FIGS. 5A to 5D). It is made to extend and engage, and the other hinge part is provided in this extension engagement part, and the other switch part 60b was attached to the said other hinge part in the state which can be rotated.

The joining rail switching unit 18 extends another lever member 62b on the outer side of the arc of the other switch member 60b, and the other lever member 62b and the outer side of the circulation rail 2. The other air cylinder 64b is mounted between the rails 22a, and the switch member 60b is rotated by rotating the switch member 60b through the lever member 62b in accordance with the rod stretching action of the other air cylinder 64b. To selectively open the circulation rail 2 or the branch rail 12.

As described above, the air cylinders 64a and 64b of the branch rail switching unit 16 and the joining rail switching unit 18 are driven by compressed air supplied from an air compressor Ac (see FIG. 1A). In addition, the rod is stretched and contracted, and the flow path control of the compressed air for stretching the rod is performed when the solenoid valve (not shown) is applied with a control signal from the control unit C (see FIG. 1A).

Further, on the circulation rails 2 and the branch rails 12 (as in FIG. 1B), carrier units C1 to Cn (see FIG. 6) are movably provided. That is, as described above, the circulation rail 2 and the branch rail 12 are formed of inner and outer pairs of 'c' shaped steels 22a, 24a, 22b and 24b which are spaced apart from each other. 2A to 5D, the carrier units Ra1 to Rb4 (see FIGS. 8A to 9C) of the plurality of groups Ra and Rb (see FIGS. 8A to 9C) are internally formed to enable the carrier unit to be driven. (C1) to (Cn) can be constituted.

That is, (as shown in Figs. 8A to 9C, at least four driving rollers Ra1 to Rb4 are mounted on the front, rear, left, and right sides of the two movable members 70a and 70b, respectively, and the movable member 70a. The drum rollers 72a1 to 72b2 are mounted at positions at the center of the 70b and at the front and rear of the driving rollers Ra1 to Rb4 so that such a combination is the front one and the rear one. Carrier unit C1 to a movable state coupled to the rails 2 and 12 made of a pair of 'c' shaped steels 22a, 24a, 22b and 24b (see FIGS. 2A to 5D). (Cn) is made.

In addition, the pivot members 74a1 to 74b2 are hinge-mounted to the upper and rear positions of the movable members 70a and 70b as described above, and the neighboring pivot members 74a1 to 74b2 are friction bars. b1) to (bn), and the boss members 76a and 76b are fixedly formed at the center of the movable members 70a and 70b of each assembly, thereby pivoting the hinge pins P of the bogie frame F. In addition to the possible combination, the clipper (Cp1) ~ (Cp4) that can restrain the corresponding portion of the lower portion of the vehicle body frame (not shown) to the seating portion in the front, rear, left and right corners of the balance frame (F) ) Was fixed (see FIG. 9D).

Further, the lower limit of any movable member 70a (as shown in FIGS. 6 and 8A to 8B), which constitutes any one of the combinations, corresponds to the limit switches Ls8 (Ls13) (Ls13) and Ls18 (Ls20). The stopper unit (SU1) to (SUn) which is fixed to the engaging member 78 that can actuate, and the other locking member 80 is fixed to the other movable member (70b) at the bottom thereof and interacting therewith. It will be provided (see Fig. 1b).

That is, the stopper units SU1 to SUn have the circulation rails 2 and the branch rails at the corresponding positions so as to restrict the operation of the carrier units C2 to Cn-1 as needed. 12) installed on the lower side, the stopper 82, which is selectively engaged with the other locking member 80, is installed by a cam bracket 84 mounted on a predetermined portion of the circulation rail 2 and the branch rail 12, At the same time, it is installed to be elevated by another air cylinder 86 (see Figs. 7A to 7C).

The cam bracket 84 is perforated with a plurality of cam holes 90a and 90b for guiding the plurality of cams 88a and 88b of the stopper 82, so that the entire stopper 82 is closed by the air cylinder 64a. It is possible to elevate the front end of the stopper 82 when pulled or pushed in the front-rear direction (see FIGS. 7A to 7C).

In addition, a plurality of position detection means are provided at each of a plurality of corresponding positions of the circulation rail 2 and the branch rail 12 so that the position state of the carrier units C1 to Cn can be detected. Each of these position detecting means is the limit switches Ls1 to Lsn (see Fig. 1A) as described above, and the straight portion friction transfer means 14a1 to 14an and the curved portion friction transfer means 14b1 to 14bn. Installed in each of the constituent members 30a and 30b to be pressed by the corresponding bracket members br (see FIGS. 2A to 3B), or the engaging members 78 of the plurality of carrier units C1 to Cn, respectively. ) Is provided below the circulation rail 2 and the branch rail 12 in the position adjacent to the stopper units SU1 to SUn so as to move and act between the operations (see FIGS. 1B and 6). ).

The plurality of limit switches Ls1 to Lsn as described above are operated to detect the positions of the carrier units C1 to Cn, and operate to input the detected value to the control unit C. That is, the control device unit C receives and calculates a detection value from a plurality of position detecting means (limit switches Ls1 to Lsn) and calculates the plurality of units and device units according to the value, and It is to control the driving of the friction transfer means of the control unit C, the server body (Sc), the server input device (Si), the server output device (So), warning display device (Dp), a plurality of photosensors ps1 to psn may be electrically connected (see FIG. 1A).

The automatic transfer apparatus of the present invention configured as described above starts with all registers' L1 'to' Ln ',' Cr1 'to' Crn, arbitrarily named in the first step S100, as shown in FIGS. 10A and 10B. Initialize ',' S1 'to' Sn ', and then receive the detected values from all the first to nth limit switches LS1 to (LSn), and store the input values in each of a plurality of randomly named registers. The second step (S200) is performed.

In a third step (S300), it is determined whether there is a stored value in each of the plurality of registers 'L1' to 'Ln', 'Cr1' to 'Crn', and 'S1' to 'Sn', and the majority carrier unit is determined according to the result. The position of each of (C1) to (Cn) is grasped. That is, it is determined whether the value stored in the randomly named registers 'L1' to 'Ln' is greater than '0', and if so, the next step S400 is executed, otherwise the return to the second step S200 is executed. It is done.

In the fourth step S400, an operation of receiving an indication value output from the server body Sc and storing the value in a corresponding register is performed. For example, a plurality of carrier units C1 to each unique number are assigned. By reading the process path designation values for each of the (Cn) and storing them in the arbitrarily named registers Cr1 to Crn, the plurality of carrier units C1 to Cn are each moved to a predetermined process.

Next, a fifth step S500 of receiving the detected values from all the photosensors Ps1 to Psn and storing the values in respective registers is executed. That is, in the fifth step (S500), by receiving the detected values from all the photosensors (Ps1) to (Psn), by storing the value in each of the corresponding register named arbitrarily, and simultaneously transmitting to the server main Sc, The operation can be performed in consideration of the mounting state and the assembly / painting state of the parts corresponding to each of the carrier units C1 to Cn.

In addition, as a result of analyzing the information received in the fifth step (S500) as a result of determining whether the mounting state and the assembly / coating state of the component is calculated as bad (S550), if so, outputs the corresponding message to the speaker or at the same time warning lamp After executing the warning step (S560) for operating the may be returned to the fifth step (S500).

On the other hand, if it is determined in the determination step (S550) that the mounting state and the assembly / coating state of the parts are good, the sixth step (S600) is carried out by the corresponding carrier unit (C1) to (Cn) branch rail switching unit (16) Or, when it is located in the joining rail device portion, by controlling the operation of the device portion, the corresponding carrier units (C1) to (Cn) can proceed to the path.

That is, if there is an input stored value from the limit switch provided at the entry point of the branch rail switching unit 16, and the process path specified in the carrier units C1 to Cn at this time is, for example, 'A' path. By driving the branch rail switching unit 16 counterclockwise so that the circulation rail 2 is opened in accordance with the designated value, the carrier units C1 to Cn do not pass through the branch rail 12. It is to enter the circulation rail (2).

On the contrary, if the process path specified in the corresponding carrier units C1 to Cn when there is an input storage value from the limit switch provided at the front part of the branch rail switching unit 16 is, for example, the path 'B', By driving the branch rail switching unit 16 clockwise so that the branch rail 12 is opened in accordance with the designated value, the carrier rails C1 to Cn do not pass through the circulation rail 2 and the branch rail ( 12) to enter.

In addition, if there is an input storage value from the limit switch provided at the entrance front part of the joining rail switching unit 18, and the process path specified in the carrier units C1 to Cn at this time is, for example, 'A' path, By driving the confluence rail switching unit 18 counterclockwise, the carrier units C1 to Cn continue to run from the circulation rail 2 to the circulation rail 2.

On the contrary, if the process path specified in the corresponding carrier units C1 to Cn when there is an input storage value from the limit switch installed at the entrance front portion of the confluence rail switching unit 18 is, for example, the path 'B', By driving the rail switching unit 18 clockwise, the carrier units C1 to Cn enter the circulation rail 2 from the branch rail 12.

In addition, when there is a position shift operation signal to the next process for each of the corresponding carrier units C1 to Cn, a plurality of linear portion friction transfer means 14a1 to 14an and curved portion friction transfer of the position are performed. By selectively driving the means 14b1 to 14bn, the transfer operation of each of the carrier units C1 to Cn is performed under local separate control and then fed back to the initial stage S100.

The present invention described as described above is merely a preferred embodiment, and the scope of the present invention is not limited to the above, but may be appropriately changed within the scope of the same idea.

As described above, the present invention can be driven at a separate speed according to the situation in each section, so that a sufficient stall time is required in any particular process portion section, which takes a relatively long process work time, and thus control It speeds up the response and provides the effect of smooth assembly / painting.

The present invention also provides an effect of eliminating the problem of sagging of the chain, and thus the impairment of durability due to wear damage, the problem of inhibition of quietness due to noise, and the like.

The present invention ultimately, even if separately installed in a predetermined number of places in the transfer line is possible in the chain transfer action and the volume and weight is small, can eliminate the inefficiency in the layout space, and economical structure and economical It is to provide a useful effect to enable the management of repair / maintenance.

In addition, the present invention, it is possible to fundamentally block the phenomenon that the chain is peeled off, and thus can facilitate the repair / maintenance work that is performed after the entire production line is shut down, and also takes a short time Of course, it can also provide the effect of minimizing the consumption of manpower and parts in the repair / repair operation to meet the economics required for the conveyor system.

Claims (11)

The vehicle body is mounted on a circulating rail having a chain circulation path and a carrier unit which is selectively operated via a branching rail branched therefrom according to the action of each branch / joining rail switching device operated by pneumatic pressure. And a painting process to be performed, wherein the position state of the carrier unit is detected by a plurality of position detecting means and inputted to a control unit, and the plurality of stopper units and the switching unit units according to the calculated value, and a plurality of frictions. In the automatic transfer system of the vehicle assembly / painting line for controlling the drive of the transfer means and the air compressor, A plurality of linear portion friction transfer means and a plurality of curved portion friction transfer means are provided at a plurality of positions on the straight and curved rails of the circulation rail and the branch rail; And a plurality of stopper units are installed on the circulation rail and the branch rail at a corresponding position so that the carrier unit can be operated as needed. The method of claim 1, wherein the circulation rail and the branch rail, It is arranged parallel to a certain height in the ground, and is a pair of inner and outer spaces facing each other, and is a 'c' shaped steel, and the outer rail of the circulation rail at the branch and the confluence site disconnected An automatic transfer system for automobile assembly / painting lines in which each end thereof is integrally connected with the inner and outer rail ends of the branch rail. The method of claim 1, wherein each of the plurality of linear friction transfer means, A mounting end bolted to one side of the rail support bracket which is integrally formed with the rail to support the rail; A 'c' shaped steel coupled to the mounting end such that inner ends thereof are perpendicular to each other; A rotating member hinged to an inner end of the 'ㄷ' shaped steel; A shaft member for connecting the outer end of the 'ㄷ' shaped steel and the rotating member in a fixed position variable state; A spring member wound around the shaft member so as to grip the pivot member rotated from a 'c' shaped steel; Drive means provided with a servo motor whose rotating shaft penetrates the upper plate portion of the rotating member; An automatic transfer system for an automobile assembly / painting line including a friction wheel mounted to a rotating shaft of the servomotor. The method of claim 1, wherein each of the plurality of curved frictional transfer means, the other mounting end bolted to one side of the other rail support bracket which is formed integrally with the rail to support the rail; A hinge mounting end coupled to an upper end of the other mounting end so as to be perpendicular to each other; A hinge member coupled to the hinge mounting end, the rotating member including a primary rotating member and a secondary rotating member connected to each other in a hinged state; A torsion spring mounted to the hinge mounting end and the primary rotating member to give elasticity to return the primary rotating member to its original position; An outer end of the other 'ㄷ' shaped steel constituting the primary rotating member and a second rotating member in a fixed position variable state; Another spring member wound around the other shaft member so as to harden the secondary pivot member rotated from the other 'ㄷ' shaped steel; Another driving means provided with another servomotor mounted to the secondary rotating member so that the rotating shaft penetrates the upper plate portion of the secondary rotating member; Another friction wheel mounted on a rotation shaft of the other servo motor; An 'U' rod member extending to one side lower portion of the primary rotation member and being bent in a 'U' shape so that an end height thereof corresponds to an end height of a rotation shaft of the servomotor; A lever member extending horizontally from the end of the 'U' rod member; And a tension roller rotatably mounted to the end of the lever member. The method of claim 1, wherein the branch rail switching unit, Extend the outer rail of the circulation rail and the inner rail of the branch rail, form a hinge portion at the extension coupling portion, mount the switch member to the hinge portion in a rotatable state, and on the outer side of the arc portion of the switch member. And an air cylinder mounted between the lever member and the outer rail of the circulation rail. According to claim 1, wherein the joining rail switching unit, Extends the outer rail of the circulation rail and the inner rail of the branch rail, forms another hinge portion at the extension coupling portion, mounts another switch member to the other hinge portion in a rotatable state, and the arc portion of the other switch member. An auto transport system for an automobile assembly / painting line, wherein another lever member is extended on an outer side surface, and another air cylinder is mounted between the other lever member and an outer rail of the circulation rail. The method of claim 1, wherein the carrier unit, A plurality of pairs of driving roller groups disposed in an inner space formed by a pair of inner and outer pairs of 'ㄷ' shaped steels facing each other; At least a plurality of movable members having four driving rollers constituting each group mounted on the lower front, rear, left and right; Drum controllers mounted at the center of each of the movable members and at positions before and after the upper portion of the driving roller; Pivoting members hinged to the front and rear positions of the movable members; Friction bars for connecting the adjacent rotating member, Boss members fixed to the upper center of each movable member, A bogie frame having hinge pins rotatably coupled to the boss members, respectively; In order to restrain the corresponding part of the lower part of the car body frame to the seating state, Auto transport system of the vehicle assembly / painting line comprising a clipper is fixed to the upper, front, left, right corners of the balance frame. The method of claim 1, wherein each of the plurality of stopper units, A cam bracket having a plurality of cam holes provided on the circulation rail and the branch rail at a corresponding position so as to regulate the operation of the carrier unit as necessary; A stopper having a plurality of cams penetrating the camhongs of the cam bracket, respectively; And another air cylinder for elevating the stopper front end by causing the entire stopper to be pulled or pushed forward or backward. The method of claim 1, wherein each of the plurality of position detection means, Installed between each of the plurality of circulation rails and the branch rails, the operation of which is moved between the operation by the locking member fixed to the lower portion of the movable member of each of the plurality of carriers to detect the position of the carrier, and the detected value The automatic transfer system of the automobile assembly / painting line, characterized in that the limit switch for inputting the control unit. The automatic transfer system of claim 1, further comprising a server main body, a server input device, a server output device, a warning display device, and a plurality of photosensors electrically connected to the control unit. . Starting to initialize all registers; A second step of receiving detection values from all limit switches and storing the input values in each of a plurality of randomly named registers; Determining a location of each of the plurality of carriers according to whether there is a stored value in each of the plurality of registers; A fourth step of receiving an indication value output from the server and storing the value in a corresponding register; A fifth step of receiving detection values from all photosensors and storing the values in respective registers; And a sixth step of selectively operating the friction transfer means and the switching device portions at the corresponding positions and feeding back to the second step.

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