JPH0234150Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention can be used, for example, in an automobile manufacturing factory.
It is used in the processing section when supporting the vehicle body and moving the vehicle along the evacuation route of the painting section, or when carrying out processing such as painting, polishing, and baking drying while transporting the vehicle body via the vehicle. The present invention relates to a conveyance device.

Conventional technology Conventionally, this type of device was developed in Japanese Patent Application Laid-Open No.
The structure of publication No. 107846 is provided. In this conventional structure, the workpieces transported by the main transport device are unloaded from the main transport device by the entrance-side transfer device, and then transferred from the entrance-side transfer device to the processing section transport device installed in the processing chamber. handing over things. Next, the object to be processed is intermittently transported within the processing chamber by the processing section transport device, and is subjected to processing such as painting during this period. The workpiece that has reached the end of the processing chamber is received by the exit side transfer device, and then loaded (returned) into the main transfer device. The processing section conveyance device is of the shuttle conveyor type, and conveys the pallets supporting the objects to be conveyed at a predetermined pitch by a combined operation of a conveyance bar that is moved by pushing and pulling, and a lifting table (rotary table) that is moved up and down. It is fed at a constant speed and intermittently.

Problems to be Solved by the Invention Incidentally, it is sufficient if the objects to be processed are of the same type, but in reality, different types of objects are transported in long and short cycles. In this case, in the above-mentioned conventional formation, since the material is intermittently progressively fed at a constant speed, it is not possible to carry out the processing operation while transporting the material at a high speed, for example. Further, large noise is generated during the reciprocating operation of the processing unit transport device. Furthermore, since the time for pulling (returning) the conveyance bar must be incorporated into the time cycle, efficient work cannot be expected. Note that instead of the shuttle conveyor type, a chain conveyor type is also adopted as a processing unit conveyance device, but even this type cannot convey at high speed and also generates a large amount of noise. Especially in the evacuation route of the painting department, the movement of moving objects is 2 times a day.
Since it takes ~3 times and about 1 to 2 hours, providing a chain conveyor would be a huge waste. Furthermore, in both types, the operating section of the processing section transport device cannot be easily cleaned, and cleaning cannot be performed unless the operation is stopped.

The purpose of this invention is to be able to switch the conveyance speed, reduce the noise during conveyance, operate in one direction and do not require a return movement, and clean the operating part by stopping the operation. The object of the present invention is to provide a conveyance device in a processing section that can be easily carried out without any problems.

Means for Solving the Problems In order to solve the above problems, the conveyance device in the processing section of the present invention includes a moving body that is supported and guided by a rail, and a moving body that can freely travel on a traveling path formed along the rail. It has a self-propelled vehicle equipped with a battery, and a locking and disengaging device provided between these movable bodies and the self-propelled vehicle, and the movable body is provided with a conveyed object support device, and the rail and the self-propelled vehicle travel path are provided. A cover is provided to surround it.

Effects According to the configuration of the present invention, the movable body that supports the transported object via the support device travels under the propulsion force of the self-propelled vehicle due to the engagement action of the engagement/disengagement device, and therefore The conveyance speed can be changed by controlling the speed of the conveyor. Additionally, self-propelled vehicles can be driven in one direction and with less noise. Furthermore, by driving a self-propelled vehicle having a cleaning function into the self-propelled vehicle travel route at a timely manner, cleaning can be performed without stopping the intended operation.

Embodiment An embodiment of the present invention will be described below based on the drawings.

Reference numeral 1 denotes a moving body that is supported and guided by a pair of left and right rails 2, and includes a front trolley 3, a pair of front and rear free trolleys 4 and 5, a rear trolley 6, and a moving body that moves relative to each other between the front trolley 3 and the front free trolley 4. An extendable connecting rod 7 that connects freely to swing, a connecting rod 8 that connects free trolley 5 and rear trolley 6 in a relatively swingable manner, and also serves as a connecting rod between both free trolleys 4 and 5. It is constituted by a conveyed object support device 9. Each of the trolleys 3 to 6 has a pair of front and rear trolley wheels 11 on both sides of the main body 10, and these trolley wheels 11 are supported and guided by the rails 2. The main body 10 also has a guide roller 12 guided to the inner end of the rail 2. The support device 9, which also serves as a connecting rod, includes a frame body 14 having attachments 13 at a plurality of locations on the upper surface side, a trunnion pin 15 that connects the front and rear parts of this frame body 14 to both free trolleys 4 and 5; It consists of 16. Reference numeral 17 denotes the body of an automobile, which is an example of an object to be transported, and a receiver 18 corresponding to the type of the body 17 is attached to the mounting tool 1.
It can be detachably attached to 3. A passive body 20 that is vertically swingable is attached to the lower part of the main body 10 of the front trolley 3 via a horizontal pin 19.
The intermediate portion of the passive body 20 is supported by the transverse pin 19, and is biased to swing by a weight so that the lower side becomes lower due to the displacement of the center of gravity. A passive surface 21 that is open downward and has an upright shape is formed on the lower side, and a cam surface 22 for swinging against the weight bias is formed on the upper side of the upper side. At the lower part of the main body 10 of the rear trolley 6, a cam body 23 that acts on the cam surface 22 is connected rearward. Said rail 2
Below, there is a travel guide plate 2 along this rail 2.
4 is arranged, and this traveling guide plate 24 and both rails 2
They are integrated with yokes 25 at predetermined pitches. The cover bottom plate 26 provided between the lower surfaces of the yokes 25 is placed on the floor 28 via the support member 27, and the cover side plate is placed between the rail 2 and the cover bottom plate 26 in a state that connects the adjacent yokes 25. 29 are provided, and the cover bottom plate 26 and the cover side plates 29 form a running route 30 along the rail 2. A self-propelled vehicle 31 that can freely travel on this travel route 30 has idle wheels 32 and drive wheels 33 that can freely roll on the cover bottom plate 26 at the bottom, and further has wheels 32 erected from the center of the cover bottom plate 26. It has guide rollers 35 that sandwich the guide plate 34. The self-propelled vehicle 31 is equipped with a drive device 36 and a battery 37 that are interlocked with drive wheels 33. A driving protrusion 38 is erected from the center on the upper surface of the self-propelled vehicle 31, and by engaging the driven surface 21 with this driving protrusion 38, the movable body 1 can freely run on a fixed transport path 39, These drive protrusions 38 and passive body 20 constitute a locking/disengaging device 50. A passive body 2 is located near the driving protrusion 38.
Moving object detection device (switch) 4 operated at 0
0 is provided, and a preceding object detection device (switch) 41 that is operated by the cam body 23 of the moving body 1 that is ahead is provided on the front upper surface. Both of the paths 30 and 39 are arranged in parallel to form a retreat path section 42 in the coating section, and are further connected to a main path 44 for carrying in from the previous process and carrying out to the next process. 45 is a branching device, 46 is a merging device, 4
7 indicates a bypass route. Both routes 30, 39
A storage path 48 is provided in parallel with the storage path 48 , and a charging station 49 for the battery 37 is provided in this storage path 48 .

Next, the conveyance work in the above embodiment will be explained.

The movable body 1 supporting the body 17 has a locking/disengaging device 5
The self-propelled vehicle 31 travels under the driving force of the self-propelled vehicle 31 due to the engagement action of 0, and enters the evacuation path section 42 via the branching device 45. The moving body 1 is then merged into the main route 44 via the merge device 46, and the next process (painting section)
Run to. The above-mentioned running can be switched between high speed and low speed by controlling the speed.
It can also be stopped further. In the engaged state of the above-mentioned engagement/disengagement device 50, the passive body 20 moves downward.
By activating the moving body detection device 40, integration with the moving body 1 can be confirmed. And self-propelled car 31
When the mobile vehicle 1 approaches the preceding moving object 1, the preceding object detection device 41 contacts the cam body 23 and is activated, thereby making it possible to automatically stop the self-propelled vehicle 31. For example, the free self-propelled vehicle 31 is transferred to the storage path 47 and stored. At this time, the battery 37 is charged at the charging station 49.

As shown in FIG. 3, by driving a self-propelled vehicle 31 equipped with a cleaning device 51 such as a rotating brush or a vacuum cleaner between the movable body 1 and the self-propelled vehicle 31 integrated with the movable body 1, the cover bottom plate 20 Dust, iron powder, etc. on the surface can be cleaned and removed by the cleaning device 51.
At that time, the cleaning is carried out by a self-propelled vehicle 31 that is integrated with the mobile body 1.
The intended transport operation can be carried out without stopping.

In the above embodiment, the passive body 2 is connected to the driving protrusion 38.
0 has been shown to engage and disengage, but this is due to the passive body 2
The driving protrusion 38 may be of a type that engages and disengages with respect to zero. Further, although the moving body 1 is shown as a cart type that runs on the floor, it may also be a suspended conveyance type that runs on the ceiling side. Furthermore, although a format in which four trolleys are used as the moving body 1 is shown, various formats may be employed, such as, for example, three trolleys.

Effects of the Invention According to the present invention having the above-mentioned configuration, the movable body supporting the conveyed object via the support device can receive the propulsive force of the self-propelled vehicle and travel in an integrated manner through the engagement action of the engagement and disengagement device. Therefore, the conveyance speed can be freely switched by controlling the speed of the self-propelled vehicle. Furthermore, since the application of propulsive force by a self-propelled vehicle is a one-way operation and does not require a return motion, efficient work can be expected, and furthermore, by using a self-propelled vehicle, the vehicle can be driven with extremely low noise. By driving a self-propelled vehicle having a cleaning function into the self-propelled vehicle travel route at a timely manner, cleaning can be easily performed without stopping the intended operation. Furthermore, the cover can minimize the intrusion of foreign matter into the travel route. In particular, the present invention can be advantageously adopted for conveyance in a retreat route of a coating section where the number of operations and time required are small.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a partially cutaway side view, Fig. 2 is a longitudinal front view, Fig. 3 is a longitudinal front view during cleaning, and Figs. 4 and 5 are arrangement. FIG. 3 is a schematic plan view showing an example. DESCRIPTION OF SYMBOLS 1... Moving body, 2... Rail, 9... Transported object support device, 17... Body (transported object), 24...
...Traveling guide plate, 26...Cover bottom plate, 29...Cover side plate, 30...Driving route, 31...Self-propelled vehicle,
33... Drive wheel, 36... Drive device, 37...
Battery, 39...Transportation route, 40...Moving object detection device, 41...Preceding object detection device, 42...Evacuation route section, 44...Main route, 48...Storage route, 49...Charging station, 50 ...Latching and disengaging device, 51...Cleaning device.

Claims (1)

[Scope of utility model registration request] A movable body supported and guided by a rail, a self-propelled vehicle equipped with a battery that can freely travel on a travel route formed along the rail, and an engagement/disengagement device provided between these movable bodies and the self-propelled vehicle. A transfer device for a processing section, characterized in that the movable body is provided with an object support device, and a cover is provided that surrounds the rail and the self-propelled vehicle travel path.