JPS6118625A - Conveyer apparatus - Google Patents

Abstract

PURPOSE:To automatically deliver a workpiece by disposing a sub-conveyer to which a hoisting accessory can be transferred between a conveyer for conveying the workpiece through the hoisting accessory and a conveyer for carrying the work in the above conveyer. CONSTITUTION:A line for manufacturing a radiator for a car includes equipment adapted to receive a work (radiator) W from the second conveyer 200 after a leak test and so on and convey the work to a coating process by the first conveyer 100. In this case, a sub-conveyer 300 is interposed between both conveyers 100, 200. A trolley 103 of the first conveyer 100 is formed in such a manner as to take a circuit round a place for delivering a work W from the second conveyer 200 to the sub-conveyer 300. A hoisting accessory 400 for suspending and supporting a work W is transferred from the upstream side of the first conveyer 100 to the sub-conveyer 300 to receive the work W from the second conveyer 200 in the sub-conveyer 300, and then transferred to the downstream side of the first conveyer 100.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a conveyor device for transporting, for example, a vehicle radiator from an inspection process to a painting process, and particularly relates to a mechanism for transferring workpieces between a plurality of conveyors. be.

Conventional technology Conventionally, the conveyor equipment installed in the production line of vehicle radiators has a first conveyor going to the painting process and a second conveyor coming from the inspection process, which are separate systems. It is necessary to pass a certain radiator. The first conveyor is usually a trolley conveyor, and a hanging device that is transferred to this trolley conveyor to suspend and support the radiator is a primary hanger and a secondary hanger that can be connected to each other in order to receive the radiator carried from the second conveyor. It consists of hanga. - The secondary hanger is directly supported by the trolley conveyor, while the secondary hanger is molded to the shape of the radiator in order to suspend it. Conventionally, the transfer from the second conveyor to the first conveyor has been carried out manually by an operator, who operates the secondary hanger and the secondary hanger.

Problems to be Solved by the Invention Conventional devices do not handle the workpieces (
radiators) are handed over by hand by the operator.
The problem was that work efficiency was poor. The present invention was made to solve this problem, and an object of the present invention is to provide a conveyor device that can automatically transfer a workpiece from a second conveyor to a first conveyor.

Means for Solving the Problems The conveyor device according to the present invention includes a first conveyor that transfers a hanging tool and conveys the workpiece to a subsequent stage via the hanging tool, and a first conveyor that transports the workpiece from the previous stage to the first conveyor. A sub-conveyor is provided between the first conveyor and the second conveyor and extends from the upstream side to the downstream side of the first conveyor. The work is transferred to a sub-conveyor, receives the work from the second conveyor midway along the sub-conveyor, is conveyed again by the sub-conveyor, and is transferred to the downstream side of the first conveyor.

Example The present invention will be explained below with reference to illustrated embodiments.

In FIG. 1, a first conveyor 100 is a trolley conveyor that extends endlessly through a painting process (not shown).
The second conveyor 200 extends toward the first conveyor 100 from an inspection process such as a helium leak test. The sub-conveyor 300 is provided between the first conveyor 100 and the second conveyor 200, and is connected to the upstream portion 10 of the first conveyor 100.
1 to the downstream portion 102 . The hanging device 400 for suspending and supporting the workpiece (radiator) W is the first
Transfer to the sub-conveyor 300 from the upstream side of the conveyor 100, and in this sub-conveyor 300, the second conveyor 200
The workpiece W is received from there and conveyed again by the sub-conveyor 300, transferred to the downstream side of the first conveyor 100, and transferred to the painting process.

Toro January 0.3 of the first conveyor 100 is made of ■ section steel, and the workpiece W is transferred from the second conveyor 200 to the sub-conveyor 30.
It is molded by bypassing the place where it is delivered to 0. A transport mechanism 110 that transports the hanging tool 400 is driven via a chain 104 provided along a trolley 103. Transport mechanism 1
The ten rollers 111 are pivotally supported by a connecting member 112 connected to the chain 104 and are constantly engaged with the lower flange of the trolley 103. Below the connecting member 112, a hanging tool 4 is provided.
A locking member 113 for supporting 00 is formed. This locking member 113 has a pair of legs 113a extending downward,
It has a bottle 113b protruding inwardly from these leg portions 113a. The bottle 113b is attached to a hanger 400 as described later.
Supports pull-ups.

The upstream section 101 and downstream section 102 of the trolley 103 are provided with transfer mechanisms 120 and 140, respectively.

Since these transfer mechanisms 120 and 140 have the same configuration, the transfer mechanism 120 provided in the upstream portion 101 will be described. A plate 121 fixed to the upper surface of the trolley 103 has a cylinder device 122 and a guide tube 123°1.
24 are mounted parallel to each other. Cylinder device 122
has a piston rod 125 projecting upward, and a coupling plate 126 is fixed to the tip of the piston rod 125. Rods 127 and 128 fixed to the lower surfaces of both ends of the coupling plate 126 are slidably supported by the guide tubes 123 and 124, and their lower portions protrude below the guide tubes 123 and 124, and are received at the lower ends, respectively. are members 129, 13
0 is set. The receiver members 129, 130 can be secured to the lifting rod 407 of the hanger 400 as described below.

In addition, each part of the transfer mechanism 140 provided in the downstream part 102 is shown by adding 20 to the reference numeral of each corresponding part of the transfer mechanism 120 in the upstream part 101.

As shown in FIG. 2, the hanger 400 is formed by integrally joining several members.A horizontal plate 402 extending horizontally is fixed to the lower end of a vertical plate 401 extending vertically. , a pair of hanging members 403 are provided at both ends of this horizontal plate 402,
404 is attached. These hanging members 403.40
Reference numeral 4 supports the workpiece W from below, and the tip support portion 403a of one hanging member 403 is located on the front right side in the direction of movement of the hanging tool 400, and the tip supporting portion 404a of the other hanging member 404 is located on the front right side in the traveling direction of the hanging tool 400. Located at the rear left in the direction of travel. That is, the hanging tool 400 supports the workpiece W diagonally. A bending plate 405 that can be locked to the bin 113b of the moving mechanism 110 is attached to the upper end of the vertical plate 401. The height of the bending plate 405 is smaller than the length from the base of the leg portion 113a of the engagement member 113 to the pin 113b. Further, a mounting member 406 extending along the longitudinal direction of the trolley 103 is attached to approximately the center of the vertical plate 401, and a lifting rod 407 extending perpendicularly thereto is fixed immediately above the mounting member 406. The mounting member 406 is a part that is mounted on the sub-conveyor 300, and stoppers 408 are formed at both ends to prevent a work from interfering with an adjacent work during painting or the like.

When the transport mechanism 110 reaches the transfer mechanism 120 in the upstream section Lot of the trolley 103, the cylinder device 122 is actuated to raise the rods 127, 128, so that the members 129, 130 are moved to the lifting rods. 40
7 to release the bending plate 405 from the pin 113b.

The height position of the bending plate 405 at this time is such that its lower end is above the pin 113b. chain 10
4 continues to move, and as a result, the conveying mechanism 110 advances by passing the pin 113b under the bending plate 405.

Thereafter, the cylinder device 122 moves the piston rod 125 backward. Then, the rods 127 and 128 descend,
The mounting member 406 of the hanging tool 400 is placed on the sub-conveyor 300.

On the other hand, in the downstream portion 102 of the trolley 103, when the hoist 400 that supports the work W transferred to the sub-conveyor 300 reaches directly below the transfer mechanism 140, the receiver that was previously at the lowest position is moved to the member 149. 150 rises through the cylinder device 142 and engages the lifting rod 407 of the sling 400. The receiver members 149 and 150 further rise, and the bending plate 405 of the hanging tool 400 is moved to the transport mechanism 11.
Lift it slightly above pin 113b of 0.

Here, when the transport mechanism 110 comes to the transfer mechanism 140,
The cylinder assembly W142 lowers the receiver members 149 and 150 via the piston rod 145. However, the bending plate 4
05 engages the pin 113b, and the lifting rod 407 is released from the members 149 and 150. Therefore, the hanging tool 400 is transferred to the transport mechanism 110 again and is transported to the next painting process.

The second conveyor 200 carries workpieces W from a previous process such as an inspection process.
It is a chain conveyor. The size of the work W may vary, and in order to cope with this, a centering mechanism 210 is provided at the end of the chain conveyor 201 to align the center position. A pair of arms 211 and 212 that sandwich both ends of the workpiece W are driven by a cylinder device 213. These arms 211
, 212 and the support plate 2 to which the cylinder device 213 is attached.
14 is swingably supported by a pin 215 provided on a fixed frame (not shown), and is swingably driven via a cylinder device 216.

The pair of arms 21L212 is attached to a support plate 214 and is supported by a rod 217 extending along the chain conveyor 201 so as to be expandable and contractible, and is always urged in an expanding direction by a spring 218. Chain 219 is arm 211212
A piston rod 220 of the toshilinter device 213 is connected and engaged with a roller 221 pivotally supported by the support plate 214. Therefore, when the piston rod 220 retreats, the pair of arms 21L212 are pulled by the chain 219 and resist the spring 218 to narrow the distance between them. On the other hand, when the piston rod 220 protrudes, it is pushed by the arms 211, 212 springs 218 and expands outward.

Note that the support plate 214 as a whole can be rotationally displaced by the cylinder device 216 and released from the workpiece W.

A transfer mechanism 230 is provided below the centering mechanism 210. A pair of pinching members 231 sandwich the workpiece W from both sides, and the guide rod 23 fixed to the moving plate 232
It is supported so that it can be expanded and contracted along 3.

A cylinder device 234 is provided above the moving plate 232 for this expansion/contraction movement. The movable plate 232 is connected to the fixed member 235
It is supported by a guide rod 236 that is attached to the chain conveyor 201 and extends along the chain conveyor 201, and is reciprocated by a cylinder device 237.

When the workpiece W is positioned by the centering mechanism 210, the sandwiching member 231 pinches the workpiece W via the cylinder device 234. Then, the centering mechanism 210 spreads the arms 211 and 212, moves the arm 21L212 upward via the cylinder device 216, and releases the workpiece W. Next, the transfer mechanism 230 advances the moving plate 232 using the cylinder device 237, thereby transferring the workpiece W to the holding mechanism 240.

The holding mechanism 240 temporarily holds the workpiece W in order to transfer it to the sub-conveyor 300. A frame member 242 having a roller 241 that supports the work W is connected to a fixed frame (not shown). A moving frame 245 attached to the piston rod 244 of the cylinder device 243 can be placed on the front side of the frame member 242. That is, the movable frame 245 is reciprocally movable via the cylinder device 243, faces the frame member 242 when in the forward position, and escapes to the side of the frame member 242 when in the retreat position. This moving frame 2
Similarly to the frame member 242, a roller 241 is pivotally supported on the front surface of the frame member 245, and the workpiece W can be held by the frame member 242 and the movable frame 245. In addition, frame member 2
A slit 246 is formed in 42 to avoid interference with the hanging member 404 of the hanging tool 400.

The sub-conveyor 300 includes a first chain conveyor 301, a second chain conveyor 302, and a delivery mechanism 310. First and second chain conveyor 301゜302
are provided in parallel to the upstream portion 101 and the downstream portion 102 of the first conveyor 100, and the delivery mechanism 3
10 are arranged.

A support plate 311 of the delivery mechanism 310 is fixed to a fixed frame (not shown), and a cylinder device 3 is mounted on the lower surface of this support plate 311.
12 and guide tubes 313 and 314 are attached. A lifting plate 3 is provided at the lower end of the piston rod 318 of the cylinder device 312.
15 is fixed, and rods 316 and 317 erected on the upper surface of this elevating plate 315 are fitted and supported by guide tubes 313 and 314. A rod 319 rotatably attached to the elevating plate 315 projects below the elevating plate 315, and a first joint 320 is provided on the protruding portion. A second joint 322 is provided on the upper part of a connecting plate 321 provided below the elevating plate 315, and this second wE hand 322 is connected to the first joint 320 via an intermediate joint 323.

The intermediate joint 323 is displaceable in the longitudinal direction of the chain conveyors 301 and 302 via a pin 324, and the second joint 322 is displaceable in the lateral direction of the chain conveyors 301 and 302 via a pin 325. On the other hand, the connecting plate 321
A delivery plate 32 is attached to the lower end of the rod 326 fixed below.
7 is installed. The transfer plate 327 includes a horizontal portion 327a and a support portion 327b perpendicular to the horizontal portion 327a, and two recesses 328 are formed on the upper surface of the horizontal portion 327a. A pair of knock pins 329 supported by a fixed frame so as to be movable up and down can be respectively engaged with these recesses 328, and the lifting and lowering of these knock pins 329 is performed by a cylinder device 330. The portion from the transfer plate 327 to the rod 319 is rotatable around the axis of the rod 319. This rotational movement is performed by a cylinder device 331 provided on the elevating plate 315.

That is, the arm 23 fixed to the upper end of the rod 319
3 is urged by a spring 333 and is always in contact with the piston rod 334 of the cylinder device 331. When the piston rod 334 protrudes, the rod 319 rotates counterclockwise when viewed from above, and the piston rod 334 retreats. At this time, the rod 319 is pressed by the spring 333 and rotates clockwise when viewed from above.

First and second chain conveyors 301. ．． On the side between 302, these chain conveyors 301, 302
A gripping mechanism 340 is disposed along. Grasping mechanism 340
The rod 341 is reciprocatably supported by a cylinder device 342, and is connected to a first gripping member 343 and a second gripping member 34.
It has 4. The first gripping member 343 is bifurcated at the tip, and the vertical plate 401 of the hanging tool 400 is sandwiched between the two.
1 to the support section 327b of the delivery mechanism 310. The second gripping member 344 also has a bifurcated tip, so that the hanging tool 400 can be transferred from the support section 327b of the delivery mechanism 310 to the second chain conveyor 302.

Due to this operation, the rod 341 can be rotated around the axis in addition to being reciprocated by the cylinder device 342. In the cylinder device 345 that causes this rotational displacement, the piston rod is a rack 346, and this rack 34
6 is a pinion 3 pivotally connected to the support member 347 of the fixed frame.
48 meshes. The pinion 348 has a rod 341 in its hole.
A spline 349 formed at the base of the
The spline 349 can be displaced relative to the pinion 348 in the axial direction, but is integrally displaced in the rotational direction. Note that a stopper 351 driven by a cylinder device 350 is provided downstream of the first chain conveyor 301.

The delivery mechanism 310 and the gripping mechanism 340 operate as follows to deliver the hanging tool 400.

Hanging tool 400 transported by first chain 301
is stopped by the stopper 351, and the first gripping member 343, which was facing downward, is rotated by about 90 degrees by the action of the cylinder device 345 to a horizontal position, thereby gripping the vertical plate 401 of the hanging tool 400. . After that, the stopper 351
When the user releases the hanging tool 400, the rod 341 moves toward the second chain conveyor 302, and as a result, the first gripping member 343 releases the hanging tool 400 from the support section 3 of the delivery mechanism 310.
Move to 27b. After the first gripping member 343 rotates downward and releases the vertical plate 401 of the hanging tool 400, the delivery plate 32
7 is lowered by the action of the cylinder device 312. At this time, the cylinder device 331 operates, and the piston rod 33
4 to protrude and rotate the delivery plate 327. As a result,
A pair of hanging members 403 and 404 of the hanging tool 400 are
As shown in Figure fal, the opening is widened and the workpiece W can be easily received.

The workpiece W transferred by the transfer mechanism 230 is placed on the roller 241 of the holding mechanism 240 without interfering with the hanging members 403 and 404 (FIG. 4(a)). Due to the action, the transfer plate 327 rotates in the opposite direction to that described above, and the hanging members 403 and 404 are held on the lower surface of the upper step of the workpiece W (FIG. 4(b)).

That is, the separate members 403 and 404 are located at the center point C of the workpiece W.
Support two points symmetrical to . At this time, due to the action of the spring 333, the hanging members 403 and 404 are biased more clockwise than in the state shown in FIG. It is designed to engage with

Next, the moving frame 245 is moved backward by the cylinder device 243, and the workpiece W can be moved toward the second chain conveyor 302. The transfer plate 327 rises via the cylinder assembly W312 and once stops when the support portion 327b reaches the same height position as the second chain conveyor 302. In this state, the delivery plate 327 is rotated slightly clockwise when viewed from above due to the action of the spring 333 as described above, and the support portion 327b is connected to the second chain conveyor 3.
It is not on the same straight line as 02. So next, dowel pin 32
9 is lowered by the cylinder device 330 and engaged with the recess 32B. As a result, the support portion 327b comes to be in the same straight line as the second chain conveyor 302.

Then, the second gripping member 344 rotates from below to become horizontal, and grips the vertical plate 401 of the hanging tool 400. Next, due to the action of the cylinder W342, the gripping member 344 is attached to the hanging tool 400.
is transferred from the transfer plate 327 to the second chain conveyor 302. The second chain conveyor 302 supports the mounting member 406 of the hanging tool 400 and transfers the hanging tool 400 to the transfer mechanism 140.
Transfer it directly below. Then, the hanging tool 400 is transferred again to the first conveyor]00 as described above, and the workpiece W is transported to the next step.

Effects of the Invention As described above, according to the present invention, the transfer of workpieces between a plurality of conveyors is automated, and the work can be ensured and efficiency can be greatly improved.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the present invention, Fig. 2 is a perspective view showing a hanging tool, Fig. 3 is a side view showing a state in which the hanging tool is conveyed by the transport mechanism, and Fig. 4 is a plan view showing the state before the workpiece is engaged with the hanging tool, and FIG. 4 is a plan view showing the state after the workpiece is engaged with the hanging tool. 100...First conveyor, 200...Second conveyor, 300...Sub conveyor, 400...Hanging tool, W...Work.

Claims (1)

[Claims] 1. A first conveyor that transfers a hanging tool and conveys a workpiece to a subsequent process via this lifting tool, and a first conveyor that transports a workpiece from a previous process to a
A second conveyor that conveys toward the conveyor, and a sub-conveyor that is provided between the first conveyor and the second conveyor and extends from the upstream side to the downstream side of the first conveyor. A conveyor device characterized in that the work is transferred from the upstream side of the conveyor to a sub-conveyor, receives the work from the second conveyor midway along the sub-conveyor, is conveyed again by the sub-conveyor, and is transferred to the downstream side of the first conveyor. .