JPH048109Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a transfer device for perforated workpieces.

(Prior Art) Taking a driven gear of an internal combustion engine as an example of a workpiece having a hole in the center, in the manufacturing process of the driven gear, conventionally, the driven gear transported by a conveyor is transferred to a basket or the like. In this case, a worker placed at the last end of the conveyor received the driven gear and manually transferred it into the basket.

(Problem that the invention aims to solve) For this reason, although the workpiece transfer work is a simple task, a worker is always required and it is time-consuming, and since it is manual work, it is difficult to perfectly align the workpieces. This was difficult and disadvantageous in terms of production.

The present invention has been developed in view of the above-mentioned conventional technology, and its purpose is to provide a perforated workpiece transfer device that can perfectly align and stack workpieces without relying on human labor. .

(Means for Solving the Problems) Means for solving the above-mentioned technical problems include a chuck part provided with a chuck claw for gripping stacked perforated workpieces through a center hole, and a traveling part that supports the chuck movably in a horizontal plane and moves the chuck part to a work stacking support at a predetermined position by traveling on a rail, and a positioning cylinder and a positioning block supported by the chuck part; a positioning mechanism for moving the positioning block through the positioning cylinder to grip the workpiece stacking support with the cylinder block, and fixing the chuck coaxially with the workpiece stacking support by this grip; It is characterized by comprising an original position holding cylinder for returning to the original position.

(Embodiment) A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a side view of a transfer device for perforated workpieces according to the present invention, FIG. 2 is a plan view of the device, and FIG. 3 is a view taken along arrow A in FIG.

In this embodiment, as shown in FIG. 7, a driven gear having a hole 100 in the center and teeth 101 around it will be described as a workpiece W, but the workpiece W is not limited to this. isn't it.

Two rails 4, 4 are laid on the upper surface of the frame 3 installed between the pillars 1, 2, and the frame 3
A horizontal frame 7, which is driven by a stepping motor 6 on the rails 4 and 4, is mounted so as to extend vertically to the side of the frame 3 (in the direction of B in FIGS. 2 and 3). A chuck unit 11 is attached to the horizontal frame 7 and is moved by a stepping motor 9 on a rail 8 laid on the upper surface of the horizontal frame 7.

On the other hand, 12 is a rotary table, and as shown in FIG. 3, columns 14a and 14b are bored at both ends, and by rotating the rotary cylinder 180 degrees, the columns 14a and 14b are alternately placed directly under the center 15a of the work stacking mechanism 15. To position. After passing through the conveyor 16, the chute 17, and the workpiece positioning mechanism 15b, the transported works W are stacked on the support column 14a through the center hole 100, and when a certain number of works W have been stacked, the support
a is rotated 180 degrees as described above, and the support column 14b on which no workpiece W is stacked is located directly below the center 15a.

Reference numeral 16 denotes a basket-shaped basket, which is stopped by a stopper (not shown) on the side of the frame 3, as shown in FIG. 17... is provided protrudingly.

As shown in FIG. 4, the chuck unit 11 includes a running part 10 that runs on a rail 8 laid on a horizontal frame 7 by the operation of a stepping motor 9, a chuck part 19 attached to the lower end of the running part 10, and a chuck part 19 attached to the lower end of the running part 10. It is composed of positioning mechanisms 20a and 20b attached at symmetrical positions on the outer circumference of the section 19. The running section 10 consists of a pedestal 18, a support plate 21 protruding from the upper surface of the pedestal 18, and side plates 22, 22 protruding forward from both sides of the support plate 21. The pedestal 18 has a box shape as shown in the figure. It has a hollow part S inside, and a mounting plate 24 is provided inside this hollow part S so as to be slidable in the horizontal direction via free bearings 25 arranged above and below. The cylinder 27 is attached by penetrating the hole 26a formed in the upper surface 26 of the pedestal 18 and protruding upward;
A rod 27a slidably slidable relative to the cylinder 27 is attached to the lower surface of the pedestal 18 by passing through a hole 28a formed in the lower surface 28 of the base 18, and a chuck portion 19 is attached to the lower end of the rod 27a. Thus, the cylinder 27 and the chuck portion 19 are connected to the holes 26a, 2.
It becomes possible to float within the range of
The rod 29 is slidably inserted into a fixed cylinder 29 provided on the base 18 when the rod 29 is accurately positioned on a predetermined support of the basket 16 by the action of
a... extends, and the presser 30 provided at the tip of the rod 29a presses the mounting plate 24, thereby fixing the cylinder 27 and chuck portion 19 to the base 18. In addition, on the side of the pedestal 18, there is a check unit original position holding cylinder 31 as shown in FIG.
... is attached, and when the chuck portion 19 completes its predetermined operation and becomes able to float again, the rod 31a of the cylinder 31 extends and comes into contact with the mounting plate 24, causing the chuck portion 19 to return to its original position.
Further, on both sides of the cylinder 31, there are guide rods 23, 23 for smoothly moving the chuck portion 19 up and down.
(See Figures 3 and 6).

The chuck portion 19 has an upper plate 32 attached to the lower end of the rod 27a as shown in FIG. Tsuku cylinder 3
6, 36 are provided, and the chuck cylinder 3
6, 36 causes the horizontal arms 37, 37 to slide in the horizontal direction, which causes the vertical arms 38, 38 to rotate around the fulcrums 38a, 38a, and the vertical arms 3
Chuck claws 39, 39 fixedly attached to 8, 38 open and close. Further, a pair of positioning mechanisms 20a and 20b are mounted on the mounting plate 5 at symmetrical positions on the outer periphery of the chuck portion 19.
The positioning mechanism 20a is attached to the cylinder 40a attached to the upper surface of the mounting plate 50 and the lower surface of the mounting plate 50,
It consists of a rod 43a that is slidably inserted into the cylinder 40a and a positioning block 41a attached to the tip of the rod 43a.The positioning mechanism 20b also has a similar structure, with a positioning block 41
Only the structure of b is slightly different. That is, Figure 4C
As shown in FIG. 5, which is a cross-sectional view of -C, the positioning block 41b has a rectangular cross-section;
A V-shaped groove 42 is formed in the positioning block 41a. This is the positioning block 41a,
41b extends and grabs the support column 17 (first
This is to ensure that the support 17 is held securely. Therefore, when the chuck portion 19 is positioned on the support post 17 protruding into the basket 16, the chuck portion 19 may be damaged due to displacement or falling of the support post.
Even if it cannot be positioned directly above the support column 17, this can be corrected. That is, the positioning block 41 is moved by the operation of the cylinders 40a and 40b.
a and 4ab extend to grab the support 17, correct the floating chuck part 19 to an accurate position, and align the center hole 100 of the workpiece W held by the chuck claws 39, 39 coaxially with the support 17. It forces you to do something. When the chuck part 19 stops at the correct position, the fixed cylinder 29
... is activated, the presser 30 presses the mounting plate 24, and the chuck portion 19, which has been in a floating state, is fixed. Then, the positioning mechanisms 20a, 2
The positioning blocks 41a and 41b of 0b are raised by the operation of the cylinders 40a and 40b, and then the chuck portion 19 is lowered by the operation of the cylinder 27, and the workpiece W is inserted into the support 17 with its center hole 100. The chuck claws 39, 39 are opened, and finally the chuck portion 19 is raised by the operation of the cylinder 27.

Next, the workpiece transfer procedure of the above-mentioned perforated workpiece transfer apparatus will be described.

First, as shown in FIG. 3, the workpiece W sent from the previous process is sent out from the exit of the conveyor 16 to the chute 17, slides down on the chute 17, passes through the workpiece positioning mechanism 15b, and then reaches the support of the rotary table 12. 14a, and when a certain number of them have been stacked, the rotary table 12 rotates and is positioned directly below the chuck portion 19. Next, the chuck cylinders 36, 36 are actuated to open the chuck pawls 39, 39, and in this state, the chuck portion 19 is lowered by the actuation of the cylinder 27, and the tips of the chuck pawls 39, 39 are exposed to the stacked workpieces W... When the bottom end of ... is reached, the chuck claws 39, 39 close and grip the workpiece W.
Lift up the workpiece W... By operating the stepping motor 6, the horizontal frame 7 travels on the rails 4, 4 of the frame 3, and by operating the stepping motor 9, the traveling section 10 travels on the rails 8 of the horizontal frame 7. The chuck portion 19 is located on a predetermined support 17a among the plurality of support supports 17 protruding inside the basket 16 (the position shown in FIG. 3A). At this time, the chuck portion 19 is in a floating state. Then, as described above, the cylinders 40a and 40b are activated, and the positioning blocks 41a and 41b are extended to grip the column 17a and correct the position of the chuck portion 19 to the correct position directly above the column (Figs. 1 and 4). reference). In this state, the center hole 100 of the workpiece W is positioned directly above the support column 17a. Then, the fixed cylinder 29... is operated and the presser 30 is attached to the mounting plate 24.
to fix the chuck portion 19 in the floating state, and then press the positioning block 41
a and 41b are raised by the actuation of cylinders 40a and 40b and separated from support column 17a.

Next, by the operation of the cylinder 27, the chuck part 1
9 is lowered, the center hole 100 of the work W... is inserted into the support 17a, and the work W... is stacked in the basket 16 via the support 17a. When stacking is completed, the chuck pawls 39, 39 are opened, and the chuck pawls 39, 39 are separated from the work W..., and the chuck portion 19 is raised by the operation of the cylinder 27. Also, at this time, the fixed cylinder 29 is contracted, the press of the presser 30 against the mounting plate 24 is released, and the chuck portion 19 returns to the floating state. By running the horizontal frame 7 on the rails 4, 4 of the frame 3, the running section 10
As the chuck portion 19 travels on the rail 8 of the horizontal frame 7, the chuck portion 19 returns directly above the support column 14b of the rotary table 12. At this time, the chuck portion 19
During the transfer work, the workpieces W... carried out from the transport conveyor 16 are stacked on the support 14b via the chute 17 and the workpiece stacking mechanism 15. The chuck portion 19 grasps it and transfers it to the next support column 17b in the basket 16.

By repeating the above steps, the workpieces W stacked on the rotary table 12 are moved to the supports 17 in the basket 16 by the chuck unit 11.
will be transferred sequentially.

Note that even if the support column 17 is slightly bent, the chuck portion 1
9 is attached to the support column 17 by the action of the bearing 25 and the mounting plate 24.
However, in such a case, when dealing with the next support column 17, the chuck portion 19
If this deviation is large, there is a possibility that the positioning blocks 41a, 41b will not be able to grip the support column 17. However, in the present invention, since the original position holding cylinder is provided, the chuck portion 19 returns to the original position, and the above-mentioned problems do not occur.

(Effects of the invention) As described above, according to the invention, the stacked perforated workpieces can be automatically transferred to a predetermined position, thereby saving manpower. Even if the positioning accuracy is poor due to misalignment, the chuck unit can be corrected to the correct position directly above the support using the positioning block, making it possible to reliably stack workpieces on the support, and also transfer the workpieces in perfect alignment at all times. It has a number of effects such as the ability to improve production, and is extremely advantageous in terms of production.

[Brief explanation of drawings]

Fig. 1 is a side view of the perforated work transfer device according to the present invention, Fig. 2 is a plan view of the same device, Fig. 3 is a view taken in the direction of arrow A in Fig. 1, and Fig. 4 is a longitudinal sectional view of the chuck unit. , FIG. 5 is a sectional view taken along the line CC in FIG. 4, and FIG. 6 is a diagram showing the check unit original position holding cylinder.
FIG. 7 is a diagram showing the shape of the workpiece. In addition, in the drawing, 11 is a chuck unit, 17 is a column, 20a, 20b is a positioning mechanism, 39 is a chuck pawl, 40a, 40b is a cylinder, 41
a, 41b are positioning blocks, W is a workpiece, 1
00 is the center hole of the workpiece W.

Claims (1)

[Claims for Utility Model Registration] A chuck portion provided with a chuck claw for gripping stacked perforated workpieces through a center hole; and a chuck portion that supports the chuck portion movably in a horizontal plane and runs on a rail. a traveling section for moving the chuck section to a workpiece stacking column at a predetermined position; a positioning cylinder and a positioning block supported by the chuck section; A positioning mechanism that grips the workpiece stacking support with a cylinder block and fixes the chuck coaxially with the workpiece stacking support by this gripping, and an original position holding cylinder that returns the chuck to its original position in a horizontal plane. A transfer device for perforated workpieces.