JPS6246529Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a pallet conveying type transfer machine, and its purpose is to randomly process different types of workpieces supported by pallets.

In conventional pallet conveying transfer machines, only one type of pallet is used. For this reason, the type of work that can be processed is usually limited to one type. However, there are cases where different types of workpieces are attached to a common pallet for processing, but there are restrictions such as the dimensions and shape of the reference mounting surface of the workpieces must be the same, so this method is only rarely adopted. Can not do it. In addition, in order to make it possible to attach different types of workpieces to a common pallet, there are some systems in which multiple sheet members with different sheet surfaces can be replaced by setup changes, but even in this case, the types of workpieces are limited to some extent. In addition to this, it is also necessary to change pallet setups, making it impossible to randomly process different types of workpieces.

The present invention provides a pallet exclusively for different types of workpieces and a pallet pool exclusively for the same type of pallets, so that different types of workpieces can be processed randomly even in a pallet conveying type transfer machine. Examples will be described below with reference to the drawings. In Fig. 1, 1 and 2 are processing lines, 3,
4 is a chain conveyor, 5 and 6 are transfer drive devices, 7 and 8 are pallet pools for storing pallets Pa and Pb, respectively, which are provided exclusively for different types of workpieces, and 9 is a conveyor for carrying in and carrying out pallets. In this transfer machine, in order to process two types of workpieces Wa and Wb, each processing station in processing lines 1 and 2 includes a processing station that performs common processing on two types of workpieces, and a processing station that performs common processing on two types of workpieces. A machining station dedicated to a specific workpiece that processes only one or the other of the workpieces, and a machining unit that performs two types of machining, for example to different depths, on two types of workpieces are appropriately arranged. A workpiece discriminating device (not shown) that automatically discriminates between two types of workpieces is also provided at each station, and each processing unit is made to perform a machining operation according to the type of workpiece carried into each station. ing. Transfer bars 10 and 11 are arranged vertically across each station to transport workpieces (pallets).
0 and 11 are connected to the transfer drive devices 5 and 6, and as shown in FIG. An axial transfer operation takes place. Each processing station is provided with a jig main body 16 having a reference pin 14 for pallet positioning and a reference sheet member 15 having a seat surface 15a protruding therefrom. This jig main body 16 is provided with a clamper/guide member 21 that engages with engagement grooves 20 of each pallet Pa, Pb provided exclusively for two types of workpieces and is movable up and down. is connected to. The clamper/guide member 21 is lowered to fit the reference pin 14 and the reference hole 14a,
The pallet Pa or Pb is pressed and clamped onto the sheet surface 15a. By rising, the pallet Pa or Pb is lifted to pull out the reference pin 14 from the reference hole 14a, and the fixed guide bar 24 provided between each station is aligned with the upper surface 21a of the clamper/guide member 21, and the entire length of the processing line is A continuous conveyance path is formed. In this state, the transfer bars 10, 11 are rotated to engage the engaging claws 13 with the pallets Pa, Pb, and the transfer bars 10, 11 are rotated.
11 is moved by the pitch between each station, each pallet is transferred to the next station. By lowering the clamper/guide member 21, the pallets Pa and Pb are engaged with the reference pins 14, positioned, and pressed and clamped onto the sheet surface. Then, the transfer bars 10, 11 are rotated back to disengage the engagement claw 13, and the transfer bars 10, 1 are disengaged from each other.
1 return operation is performed.

In Figure 1, STL ₁ is the workpiece loading station that attaches unprocessed workpieces to pallets, and STL _{2 is} the
_NL1 and _NL2 are nut runner devices that clamp and unclamp the workpieces to the pallet. STP is a pallet loading/unloading station that takes pallets in and out of the processing line.
As shown in the figure, the fixed rail 24 that engages with the engagement groove 20 is omitted, and a lifter device 27 is provided that raises and lowers the guide member 26 that supports the lower surface of the pallets Pa and Pb. A rail 28 is provided to support a roller 27 which is rotatably supported around an axis parallel to the axis of the roller. This rail 28 extends above the pallet loading/unloading conveyor 9. When the lifter device 27 is raised, the guide member 26 receives the lower surface of the pallet that is guided and transferred by the fixed rail 24 that engages with the engagement grooves 20 of the pallets Pa and Pb, and the lifter device 27 is lowered. Then, roller 2 on the bottom of the pallet
7 is placed on the rail, the guide member 26 further descends and escapes downward to a position where it does not interfere with the pallet being carried out of the line along the rail 28. This causes the roller 27 to roll on the rail.
pallets can be easily taken out of the line. Rail 2 on the pallet loading/unloading conveyor
Rails 30 and 31, which are perpendicular to 8 and communicate with the pallet pools 7 and 8, support rollers 29 which are provided on the lower surface of the pallets and are rotatably supported around axes perpendicular to the axes of the transfer bars 10 and 11. Therefore, by positioning a pallet at the intersection where both rails 28, 30, and 31 are perpendicular to each other and pushing the pallet in the perpendicular direction, it is possible to transfer the pallet from one rail to the other rail, which is perpendicular to each other. . The pallet pools 7 and 8 are surrounded by rails that are orthogonal to each other, and the rails are changed at the intersection of each rail. The pallets can be easily transferred by the rolling motion of the rollers, and a relatively large number of pallets can be stored with a small floor area. Furthermore, 40 and 41 are pallet pushing devices that push the pallets onto the conveyors 3 and 4, 42 and 43 are pallet pushing devices that push the pallets from the terminal ends of the conveyors 3 and 4 to the starting ends of the processing lines 2 and 1, and 44 and 45 are pallet pushing devices. 46 is a conveyor for transporting unprocessed workpieces to the vicinity of the work loading station STL ₁ ; 47 is a conveyor for transporting processed workpieces for transporting processed workpieces.

In the above configuration, loading and unloading workpieces and palletizing
Replacement of Pa and Pb and pallet pools 7 and 8
The pallets Pa and Pb are loaded and unloaded manually by the operator. The next work to be carried in is
Wa, and if the pallet placed on the pallet loading/unloading station STP is Pb, the lifter device 27 is lowered, the pallet Pb is taken out, and this pallet Pb is transferred to the pallet pool 8 dedicated to pallet Pb, The pallet Pa is taken out from the pallet pool 7 and placed in the pallet loading/unloading station STP. Then, the lifter device 27 is raised. When the machining operation at each machining station is completed, the clamper/guide member 21 is raised to unclamp the pallet and align the conveying path and the engagement groove 20. When the pallet transport operation is commanded, the transfer bar 1
0 and 11 are rotated to raise the engaging claw 13 and moved by the transfer stroke. As a result, the pallet is transferred and the clamper/guide member 21
By lowering the pallets, each pallet is positioned and clamped and the machining cycle begins. An unprocessed workpiece Wa is attached to the pallet Pa transported to the workpiece loading station STL ₁ , and the nut runner NL ₁ is operated to tighten the workpiece Wa. Also, processed workpieces are removed from the pallet transported to the workpiece unloading station STL ₂ . During this time, the transfer bar is rotated back and returned to its original position. Further, the pallets located at the terminal ends of the processing lines 1 and 2 are conveyed to the starting ends of the processing lines 2 and 1 by extrusion devices 40, 41, conveyors 3, 4, and pushing devices 42, 43.

According to the configuration of the present invention, pallet pools 7 and 8 are provided to exclusively store pallets Pa and Pb provided exclusively for different types of workpieces Wa and Wb, respectively, and a pallet pool is provided between the pallet pools 7 and 8 and the pallet loading/unloading station STP. Pallets can be exchanged freely with
It can be processed arbitrarily, whether it is Wb or Wb, and since special pallets are used for different types of workpieces, differences in shape between different types of workpieces are allowed to some extent, and various types of workpieces can be processed. It has an effect that can be applied to

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a schematic plan view showing the overall configuration of the transfer machine, FIG. 2 is a cross-sectional view taken along the arrow - in FIG.
FIG. 3 is a bottom view of the pallet, FIG. 4 is a sectional view taken along the - arrow in FIG. 1, 2... Processing line, 5, 6... Transfer drive device, 7, 8... Pallet pool, 9...
Pallet loading/unloading conveyor, STL ₁ ...Unprocessed workpiece loading station, STL ₂ ...Processed workpiece loading/unloading station, STP...Pallet loading/unloading station.

Claims (1)

[Scope of utility model registration request] In a transfer machine that supports and processes workpieces on pallets specially provided for each type of workpiece, a pallet loading/unloading station is provided between the first station and the final station, and A pallet conveying type transfer machine characterized in that a conveyor for carrying in and carrying out each pallet is connected to the conveyor, and a plurality of pallet pools are provided to the conveyor to store each pallet for each type of pallet and to allow the pallets to be taken out and put in at will.