JPS63240463A - Conveyor using carrier - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a conveying device using a carrier, which is employed, for example, in an automobile assembly plant to convey parts such as bumpers and doors along a fixed path.

2. Prior Art Conventionally, this type of device has been developed, for example, by
As seen in Publication No. 09457, a plurality of trolleys supported and guided by support rails are connected to form a carrier that can freely run on a fixed route, and a traveling drive device is arranged along the fixed route. In addition, there are multiple ! on the moving body side! ! A structure is provided in which a conveyed object support device is attached via a pivot pin. While the carrier is driven at low speed by the travel drive device, multiple steps are performed on the transported object.

Problems to be Solved by the Invention According to the above-mentioned conventional method, by moving the carrier along a fixed path at low speed, work in multiple steps can be carried out smoothly and reliably. However, depending on the model and type of the object to be transported, it may not be necessary to perform the work in all processes, and it may be necessary to perform the work in only some processes. It is disadvantageous from an efficiency point of view to cause a carrier supporting such a conveyed object to travel at low speed over the entire length of a working process path portion in a fixed path.

The purpose of the present invention is to change the traveling speed of the carrier in a constant working process route depending on the model and type of the transported object, such that the entire length is at a constant speed and a part of the carrier is at a different speed. The object of the present invention is to provide a conveyance device using a carrier that can be switched to a carrier.

Means for Solving the Problems In order to solve the above-mentioned problems, the conveyance device using a carrier according to the present invention has a sub-rail along a part of the main rail.
A passive body is provided at the lower part of the carrier which is supported and guided by these rails and can freely run, and a drive unit for high-speed running and a drive unit for low-speed running are provided on the passive body, each having a transmission protrusion that can be freely engaged and disengaged. , these drive percentage devices are distributed and arranged on both rails, and the portions of the main rail where the starting end and the terminal end of the sub-rail face each other are formed as divided rail portions, and in these divided rail portions, a portion between the main rails is formed. A main connection rail that can freely connect the main rail and a sub-connection rail that can freely connect the main rail and the sub-rail are alternatively provided.

According to the structure of the present invention, by providing the main connection rail in the divided rail portion, all the carriers run under the support and guidance of the main rail, and at this time, the running speed is set to the high-speed running speed arranged along the main rail. It is determined by the drive speed of either the drive device for low-speed travel or for low-speed travel. In addition, when a sub-connection rail is provided in the divided rail section, the carrier that has been running on the main rail under the running force from one of the drive devices transfers to the sub-rail via the 1st connection rail, and then transfers to the sub-rail. The idea is to receive the running force from the other drive device placed along the rail and run at a different speed (low or high speed) from the one side mentioned above.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 to 6.

A carrier 1 is supported and guided by a pair of left and right main rails 2, and is composed of a front trolley 3, a rear trolley 4, and a main body frame 5 that connects the front trolley 3 and the rear trolley 4 so as to be relatively swingable. .

Both trolleys 3 and 4 each have a pair of front and rear trolley wheels 8 on both sides of a flange portion 7 extending vertically from the main body 6, and these trolley wheels 8 are supported and guided by the main rail 2. The main body 6 also has a guide roller 9 on the lower surface side that is guided to the upper inner end of the main rail 2. The main body frame 5 is formed into a rectangular box frame shape in plan view by a top plate 5A and left and right side plates 5B, and a hanging plate 5C extends from the center of the front and rear ends of the top plate 5A.
l! ! At the same time, a C-shaped bracket 10 is attached to the inner surface of these hanging plates 5C. Connection bins 11 erected from the main bodies 6 of both trolleys 3 and 4 are connected to the bracket 10 via trunnion pins 12. A wide passive body 14 is attached to the lower part of the main body 6 of the front trolley 3 via a horizontal pin 13 and is vertically swingable. This passive body 14 is supported at its intermediate portion by the horizontal pin 13, 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 recessed passive portion 15 is formed on the lower side and is open downward.
Further, a cam surface 16 is formed on the upper side of the upper side for swinging against weight bias. At the lower part of the main body 6 of the rear trolley 4, a cam body 17 that acts on the cam surface 16 is connected rearward. Main rail 2
A pair of left and right main guide rails 18 are disposed below the main rail 2 along the main rail 2, and the rails 2 and 18 are integrated by yokes 19 spaced at a predetermined pitch. Low-speed running drive unit W120 supported and guided by the main guide rail 18
is a roller chain type, and includes a link chain 21, a pair of left and right brackets 22 that are vertically connected from a proper position of the link chain 21, and is supported by a main guide rail 18 that is attached to the lower end of these brackets 22. It consists of a roller 23 to be guided and a transmission protrusion 24 that is integrally provided in an upright manner from a proper position of the link chain 21. By engaging the driven portion 15 with this transmission protrusion 24, the carrier 1 is moved along a fixed path 25. You can freely drive at low speeds.

A support @ 130 for a conveyed object is provided on the upper part of the carrier 1 so as to be rotatable around a vertical axis 32 via a rotation device 31 . That is, the swing device 31 has a cylindrical post 33 that passes through the top plate 5A, and the lower part of the cylindrical post 33 is fixed to the top plate 5A via a member 34. A vertical shaft 35 is inserted into the cylindrical post 33, and this vertical shaft 35 is supported on the cylindrical post 33 side via a support member 36 and is rotatable around the vertical axis 32. A cylindrical body 37 is fixed to the lower end of the vertical shaft 35, and the lower outer periphery of this cylindrical body 37
Lever 38 is connected in the radial direction from two locations displaced by 80 degrees, and a cam roller 3 is attached to the free end of these levers 38.
9 is installed.

A disk 40 is fixed on the outer surface of the upper part of the cylinder 37, and recesses 41 are formed at four locations displaced by 90 degrees on the outer circumference of the disk 40. Vertical bin 42 hanging vertically from the top plate 5A
A link 43 is attached to the link 43 so as to be able to swing from side to side, and a roller 4 that can be fitted into and removed from the recess 41 is attached to the middle part of the link 43.
4, and a spring 45 is provided between the free end of the link 43 and the top plate 5A for biasing the link 43 to swing in the fitting direction.

The support device 30 includes a long arm 46 attached to the upper end of the vertical shaft 35 and a plurality of pins 47 erected from the arm 46. support.

The carrier 1 can freely run under the work platform 50,
Therefore, a slit 51 through which the cylindrical post 33 passes is formed in the work platform 50.

The -ashigaru road 25 passes through the working section 55, and this working section 55
On one side of the fixed path 25, there are a number of work process sections 56.
a, 56b, 56cm56n are formed. In the work section 55, a plurality of work process sections 56a to 5 on the upper side
Corresponding to the remaining work process parts 56f to 56n excluding 6e, a sub rail 60 is arranged in parallel along the other side of the main rail 2, and a sub guide rail 61 is arranged below the sub rail 60,
These rails 60, 61 are integrated by the yoke 19. The sub guide rail 61 is elongated and supports and guides a high speed drive device 63 having the same configuration as the low speed drive device 20 and having a transmission protrusion 62 and the like. The portion of the main rail 2 where the starting end and the ending end of the sub rail 60 are opposed to each other is formed into a divided rail portion 64.65. Then, linear main connecting rails 66, 6 that can freely connect between the main rails 2 are attached to these divided rail parts 64, 65.
7, and S that can be freely connected between the main rail 2 and the sub rail 60.
Curved sub-connection rails 68 and 69 are alternatively provided.

An alternative connection of the two connecting rails 66, 67, 68, 69 is carried out by replacement and bolt-up 70, 71.

Next, the operation of the above embodiment will be explained.

The carrier A 1 has a transmission protrusion 2 on the passive part 15 of the passive body 14.
4 is engaged, the vehicle receives the driving force of the low-speed travel drive device 20 and travels at a low speed on the fixed route 25. And when the preceding carrier 1 was stopped in front,
The cam surface 16 of the passive body 14 of the following carrier 1 that has traveled acts on the cam body 17 of the preceding carrier 1 so that the passive body 14 moves around the horizontal pin 13 so that the front part is on the lower side. As a result, the driven portion 15 is disengaged from the transmission protrusion 24.

As a result, the front trolley 3 of the following carrier 1 collides with the rear trolley 4 of the preceding carrier 1, so that the following carrier 1 is stopped in a non-passive state.

When the main connection rails 66 and 67 are attached to the divided rail portions 64 and 65 as shown by the solid lines in FIGS. 2 and 3, the drive mode using the low-speed running drive device @20 described above, The carrier 1 will travel at low speed over the entire length of the working section 55, and the bumper 48 will undergo respective operations at each of the working process sections 56a to 56n. When the carrier 1 supporting the bumper 48, which only requires work in the first-half work process sections 56a to 56e, is run, the main connecting rails 66 and 67 are first removed at the two-parting rail section 84.65, and then, as shown in FIG. , Attach the sub-connection rails 68 and 69 as shown by the phantom lines in Figure 3. Then, the carrier 1 is connected to the low-speed driving device rIL20.
The vehicle enters the working section 55 in response to the driving force, and performs the intended work on the bumper 48 in the first half working process sections 56a to 56e while traveling at low speed. When the carrier 1 reaches the upper dividing rail part 64, the carrier 1 is guided by the sub-connection rail 68 and moves outward, and then moves to the sub-rail 6.
Transfer to 0. This outward movement causes the passive body 14 to disengage outward from the transmission protrusion 24, and the transmission protrusion 62 of the high-speed driving bag [163] engages with the passive body 14. As a result, the carrier 1 receives the driving force of the high-speed traveling drive device 63 and moves to the latter half of the work process section 56.
Travel at high speed through locations corresponding to f to 56n. When this carrier 1 reaches the lower divided rail portion 65, it is guided by the sub-connection rail 69, moves inward, and then transfers to the main rail 2. Due to this inward movement, the passive member 914 is removed inwardly from the transmission protrusion 62, and
The transmission protrusion 24 of the low-speed traveling drive device 20 engages with this VJ condition 14. As a result, the carrier 1 receives the driving force of the low-speed traveling section vJ device 20 and travels at low speed to the next working section or the like.

Note that instead of replacing the main connecting rails 66, 67 and the sub-connecting rails 68, 69 by bolting up 70, 71, they may alternatively be connected by moving them laterally via a cylinder device or the like.

Effects of the Invention According to the present invention having the above configuration, by providing the main connection rail in the divided rail portion, all the carriers can be run with the support and guidance of the main rail, and in this case, the running speed is adjusted along the main rail. It can be determined by the drive speed of either the high-speed or low-speed drive device installed.

Also, when a sub-connection rail is provided on the divided rail section,
A carrier that has been traveling on the main rail by receiving the running force from one of the drive devices can be transferred to the sub rail via the sub-connection rail, and then transferred to the sub rail provided along the sub rail. In response to the running force from the drive device, it is possible to run at a different speed (low speed or high speed) from the one side described above. As a result, depending on the model and type of the object to be transported, the traveling speed of the carrier in a fixed work process route can be switched between a state where the entire length is at a constant speed and a state where a part of the length is at a different speed. Transport can be carried out efficiently using

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a schematic plan view;
Figures 2 and 3 are plan views of the main parts in Figure 1, Figure 4 is a partially cutaway side view, Figure 5 is a partially cutaway front view, and Figure 6 is a cross-sectional plan view. . DESCRIPTION OF SYMBOLS 1...Carrier, 2...Main rail, 3...Front trolley, 4...Rear trolley, 14...Passive body, 1
5... Passive part, 18... Main guide rail, 20...
・Low-speed running drive device, 24... Transmission protrusion, 25...
・Constant path, 30...Support device, 31...Swivel device, 32...Vertical axis center, 48...Bumper (transferred object)
, 55... working section, 56a, 56b, 56C to 56n
-09 Work process department, 60... Sub-rail, 61...
Sub-guide rail, 62... Transmission protrusion, 63... High-speed traveling section vJ device, 64.65... Divided rail section, 6
6, 67... Main connection rail, 68.69... Sub connection rail. Agent Yoshihiro Morimoto Figure Z

Claims (1)

[Claims] 1. High-speed running with sub-rails arranged in parallel along a part of the main rail, a passive body provided at the bottom of a carrier that is supported and guided by these rails and can freely travel, and a transmission protrusion that can be freely engaged and detached from the passive body. In addition to providing a drive device for running and a drive device for low-speed running, these drive devices are distributed and arranged on both rails,
A divided rail portion is formed in the main rail at a portion where a starting end and a terminal end of the sub rail face each other, and a main connecting rail that can freely connect the main rails to the divided rail portion;
A conveyance device using a carrier, characterized in that a sub-connection rail that can connect freely between the main rail and the sub-rail is provided as an alternative.