JPS5869606A - Working pallet circulating and transferring apparatus - Google Patents

Abstract

PURPOSE:To provide a pallet circulating and transferring apparatus which can promote working efficiency and reduce the floor space by providing the upper and lower conveyers, both ends of which are coupled to each other by vertical pallet position high-to-low converters. CONSTITUTION:One or a few pallets 1 are placed on a buffer conveyer A1 to load the pallets with unsoldered workpiece arranged and hung in a plurality of rows. The pallet 1 is transferred onto a working conveyer A2, the speed of which is adjusted. The work-piece passes fluxer 3, a pre-dry 4 and a soldering bath 5 to be soldered and reaches a buffer conveyer A3. A stopper 6 is opened to transfer the pallet 1 onto a conveyer 7b on an elevating table and an elevating table 7' of a pallet position high-to-low converter C descends. After that, the pallet is transferred onto a returning conveyer B and transported to the conveyer 7b on the elevating table, and an elevating table 7' of a pallet position high-to-low converter D rises. The soldered workpieces are detached from the pallet 1, and unsoldered workpieces are attached thereto.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a working pallet circulation transfer device used when a pallet carrying a large number of workpieces is transferred by a conveyor to perform solder brazing or other processing.

SUMMARY OF THE INVENTION An object of the present invention is to provide a working pallet circulation transfer device that allows one person to efficiently attach and detach workpieces to the pallet and perform solder brazing work on a large number of workpieces. .

An embodiment of the present invention will be described in detail below with reference to the drawings.

Am is a buffer conveyor provided above facing the work position 2 where workpieces are attached to and removed from the pallet 1, and can be started and stopped independently. A2 follows buffer conveyor A1.
A conveyor directly above Work M can change speed depending on the speed of the brazing work, and below the conveyor is a fluxer that applies flux to the brazing parts of the workpiece. 4. Pre-dry brazing to evaporate the flux at the location and preheat it. For solder brazing, work equipment is installed, such as a solder tank 5 for immersing parts in melted solder. A3 is a buffer conveyor that is installed in the lower part and can be started and stopped independently. Reference numeral 6 denotes a stopper that allows the pallet 1 to pass only when the lifting platform of the pallet position height converting device C, which will be described later, is located at the pallet delivery end of the buffer conveyor A3. B
is a conveyor group for the return trip, and this conveyor group B and the conveyor group A, (Al.

A2. A3) has the same overall length and is provided with both ends aligned in upper and lower stages, and the pallet sending end of buffer conveyor A3 and the pallet receiving end of conveyor group B are connected by the pallet position height converting device o'l. There is. Reference numeral 8 denotes two guide rods fixed horizontally and vertically to the main body 9 of the device C with respect to the conveyor direction, and a long hole frame 10 provided integrally with the main body 1a of the lifting platform slides vertically on these guide rods. One side strip 12a of a transmission device 12 is coupled to the elongated hole frame 10 so that the winding can be freely fitted into the elongated hole frame 10 and driven reciprocally in the vertical direction by a motor 11. ′
1b is a conveyor on a lifting platform installed in the same direction as the conveyor groups A and B, and winding is carried out by a motor 70 via transmission devices 7d and 7e.
Travel back and forth. When the elevating platform 7 stops above, the elevating platform upper conveyor'/bij: continues to the pallet receiving end of the conveyor group B, and when the elevating platform 7 stops below, the elevating platform upper conveyor'/bU of the buffer conveyor A3. It follows the pallet delivery end. D is a pallet position/height converter similar to C, which is installed symmetrically with the pallet position/height converter C above, and is connected to the buffer conveyor A.
1 pallet) 9 input end and the pallet delivery end of conveyor group B are connected. 7 of the equipment is a lifting platform, and 1'b is a conveyor above the lifting platform. In the figure, L1 is the elevator return detector, A2
is the stopper open detector, A3 is the elevator lowering detector that also serves to stop the elevator platform upper conveyor, A4 is the pallet transfer position detector that also serves as the start of the elevator platform conveyor, L6ij is the elevator return detector, and A7 is the elevator platform return detector. Stopper opening detector, 15
is a control section that receives signals from the above detectors and controls the entire system. Note that each conveyor has a two-row structure without a central section.

In the above apparatus, the working pallets are circulated as follows. First, a switch (not shown) is turned on to enable solder brazing of the fluxer 3, pre-dry 4, and solder tank 5, and each conveyor is operated. Then, one to two or three pallets 1 are placed on the buffer conveyor Al, and unsoldered workpieces are mounted in a hanging state in a plurality of rows side by side. At this time, the pallet is sent in the direction of arrow 12 at a speed sufficient to allow workpieces to be loaded onto and removed from the pallet on the buffer conveyor. In this case, if necessary, the buffer conveyor Al is moved once to the working conveyor A2, and the workpiece passes through the fluxer 3, pre-drying 4, and solder tank 5, and the solder brazing is carried out. While wearing it, reach buffer conveyor A3. Here, when the pallet 1 reaches the stopper opening detector L2, the lifting platform is moved to the buffer conveyor A3.
When the pallet 1 is waiting at the end, the stopper 6 opens to allow the pallet 1 to move forward. If the lifting platform 7 is not on standby as described above due to a malfunction or other reason, the stopper 6 remains closed and the pallets accumulate, so a worker repairs the malfunction and adjusts the flow of pallets.

When the stopper 6 is opened normally, the pallet (1) is transferred to the conveyor 7b on the lifting platform and sent in the direction of arrow 13, reaching the pallet acceptance detector L3. When acceptance of a pallet is detected here, the conveyor 7b stops, and the lifting platform 7 starts downward, reaches the pallet acceptance detector L5, is detected, stops at the pallet receiving end of the return conveyor B, and moves up the elevator platform. The conveyor 7b is made to run in the opposite direction of arrow 13. As a result, the pallet L becomes the elevator platform return detector L.
6, the elevator platform lifts up due to this signal, the pallet receiver is detected by the position detector L4, and the buffer conveyor A is moved.
It stops at the pallet delivery end of No. 3, and the elevator platform conveyor 7b travels in the direction of arrow 13 and enters a standby position. The pallet 1 flows on the conveyor B in the direction of the arrow 14 and reaches the stop bar opening detector L7. Here, the relationship between the stopper 6' and the lifting platform 7' of the pallet position height converting device, the operation of the lifting table upper conveyor gage b and the lifting table 7', etc. are the same as in the case of the pallet position height converting device C described above. The ball sent by the elevated platform 7' moves to the buffer conveyor A1, passes through the platform return detector L1, and returns the platform 7' to the lower position. Then, the workpieces that have been soldered on the barrels (1) are removed by operation, and the workpieces that have not yet been soldered are attached, and the cycle is again carried out as described above.

The present invention is as described above, and the buffer conveyor A1 can transfer unworked and processed workpieces. 1- One person can perform work such as soldering in large quantities with high efficiency, and conveyor group A and B are provided in two stages, upper and lower, and both ends are connected to a vertical pallet position/height converter C9D, which has the advantage of requiring less floor space.

[Brief explanation of drawings]

The drawing is a front view of one embodiment of the present invention. In the figure, A...Working conveyor group, A1...Buffer conveyor, A2...A upper conveyor, A30-
O buffer conveyor,] 3 a.・Return conveyor group, O, D...Pallet position height conversion device, 1...Pallet, 2...Pallet attachment/detachment work position, 3...Fluxer, 4...Pre-dry, 5...
...Solder tank, 6, 6'...Stopper, 7.7...
・Lifting platform, tfb.

Claims (2)

[Claims] (1) First the buffer conveyor Al, then the work equipment upper conveyor A2. A working conveyor group A with a buffer conveyor A3 at the bottom and a return conveyor group B are provided in upper and lower two stages with both ends aligned, and the pallet sending end of the working conveyor group A and the pallet receiving end of the return conveyor group B are arranged. The pallet receiving end of the work conveyor group A and the pallet sending end of the return conveyor group B are connected with the pallet position height converting device C, and the buffer conveyor Al is transferred to the pallet. As a workpiece loading and unloading workbench, the pallets can be circulated in the following order: work conveyor group A1 pallet position height converter C1 return conveyor group B1 pallet position height converter. Return transfer device. (2) In the pallet receiver, a lifting platform equipped with a transfer conveyor is attached to a vertical guide bar so that it can slide up and down, and the lifting platform can be stopped at the pallet sending end of one conveyor group, and when pallet reception is completed, The working pallet circulation and transfer device according to claim 1, comprising a pallet position/height conversion device capable of stopping at the pallet receiving end of the group.