JPH0450261Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a method for automatically loading cylindrical parts (hereinafter referred to as workpieces) having a hole in the center, such as gear parts, onto a pallet, etc. in a forging production line, etc. This invention relates to improvements in equipment for this purpose.

(Prior Art) Conventionally, there has been a device shown in FIG. 7, for example, as a device for sequentially loading manufactured workpieces onto a pallet or the like without damaging the surface in a forging production line or the like.

This is achieved by attaching the clamp unit 2 that grips the workpiece W sent by the chute 1 to the upper and lower cylinder devices 3, and further attaching the upper and lower cylinder devices 3 to the front and rear cylinder devices 4, so that the clamp unit 2 can be moved up and down and back and forth. In addition to being movable, on the side where the workpiece W is loaded, there are a plurality of skewers 6, . A positioning member 8 for stopping and positioning the rod 6 is provided.

To explain the operation of this device, the workpiece W that has been slid down on the chute 1 is moved to the clamp unit 2.
lowers and grasps it. Next, after operating the vertical cylinder device 3 and the front and rear cylinder device 4 to move the clamp unit 2 gripping the workpiece W to above the skewer bar 6 erected on the rotary table 5, the clamp unit 2 is released and the workpiece W is dropped and loaded so that the skewer bar 6 passes through the center hole of the workpiece W. When loading with one skewer bar 6 is completed, the rotary table 5 is rotated, the next skewer bar 6 is stopped at a predetermined position by the positioning member 8, and the above operation is repeated to stack the works W one after another. It's getting mixed up.

(Problems to be Solved by the Invention) However, the conventional loading device described above had the following problems.

The clamp unit 2 that transfers the workpiece W onto the skewer rod 6 must be gripped so as not to damage the outer circumference of the workpiece W, so a dedicated one is required depending on the outer diameter, thickness, etc. of the workpiece W. It is used.
Therefore, the clamp unit 2 has to be replaced for each different type of component, which requires a lot of effort and reduces productivity.

Furthermore, in a line that manufactures multiple types of work W, a dedicated loading device must be installed for each different type of part, which requires a large installation space and requires a large amount of equipment cost. The dot was hot.

The present invention was devised in view of the above problems, and its purpose is to enable one device to automatically load many types of workpieces without changing setups.

(Means for Solving the Problems) The present invention solves the above problems and achieves the purpose by providing a skewer bar installed upright on a pallet for loading workpieces, and a tip of the skewer bar. a clamper that clamps the sides and positions the workpiece at a certain position; a workpiece receiver that can be opened and closed to receive the workpiece supplied from the chute; A pair of fingers provided oppositely to be positioned with the outer periphery in between, a pair of links symmetrically arranged to operate the pair of fingers simultaneously, and a pair of links inserted into the center hole of the positioned workpiece. and a guide bar connected to the tip of the skewer rod.

(effect) The operation related to the above configuration will be explained.

A skewer bar on a pallet on which workpieces are loaded is positioned at a fixed position by a clamper. at the same time,
The workpiece that has slid down the chute and is stopped by the workpiece receiver is held between a pair of opposing fingers that are operated simultaneously by a pair of links and positioned above the skewer bar. This positioning is done so that the center hole of the workpiece and the skewer bar are on the same vertical line. Next, the guide bar is lowered, inserted into the center hole of the workpiece, and further connected to the tip of the skewer bar. Then, when the workpiece receiver is opened and the positioning of the workpiece by the fingers is released, the workpiece falls along the guide bar and is loaded onto a pallet with the center hole of the workpiece inserted through the skewer bar.

In this configuration, the workpiece is placed and supported on a workpiece receiver that can be opened and closed, and the fingers are only used to sandwich and position the workpiece placed on the workpiece receiver, and there is no need to grip the workpiece. Even if the outer diameter and thickness of the finger change, there is no need to replace the finger and it can be used commonly for many types of workpieces.

(Example) Next, a workpiece loading device 9 according to an example of the present invention will be described based on the drawings. The workpiece loading device 9 is incorporated in the post-process of the cold forging press, and is used to automatically load the manufactured workpieces W onto a general-purpose pallet 10 shown in FIG. In particular, in this embodiment, a case will be described in which five workpieces W can be loaded at the same time.

First, the general-purpose pallet 10 will be explained using FIG. 6. A frame 1 assembled into a rectangular parallelepiped shape
A plurality of skewers 12, . The pallet 10 is placed on a pallet pitch feeder/traverser truck (not shown) equipped with a lifting mechanism and is moved below the workpiece loading device 9 of this embodiment.

Next, the workpiece loading device 9 will be explained using FIGS. 1 to 5. In addition, FIG. 1 is a plan view of the workpiece loading device 9, FIG. 2 is a front view, FIG. 3 is a sectional view taken along the line AA in FIG. 1, and FIG. 4 is a sectional view taken along the line BB in FIG. 1. FIG. 5 is a sectional view taken along line CC in FIG.

After five works W are supplied above the chute 14 from a supply device (not shown) and lined up, they are pressed by the cylinder device 14a and slide down the chute 14 all at once. On the lower side of the chute 14, there is a pair of workpiece receivers 15, 1 for receiving the workpiece W that has slid down.
5 is provided. The work receiver 15, 15
are in sliding contact with the rails 16, 16 extending left and right, and are opened and closed by the operation of a pair of opening/closing cylinders 17, 17 provided on the left and right.
16 to open and close from side to side.

Furthermore, clampers 18 and 19 are fixed at five locations on the lower surfaces of each of the workpiece receivers 15 and 15 for simultaneously clamping the upper portions of the five skewer bars 12, . . . . The clampers 18 and 19 are for correcting misalignment caused by deformation or inclination of the skewer bar 12, and as shown in FIG.
The clamper 18 on the left side is formed in the shape of a
and the clamper 19 on the right side are intersected vertically and held.

Next, the work W on the work receivers 15, 15
is positioned by being sandwiched between five opposing fingers 20, 20. To explain the mechanism for this positioning, each of a pair of shafts 21, 21 is rotatably provided on a bearing (not shown). A symmetrical pair of links 22, 22 and 2
3 and 23 are fixed. the finger 20,
20 is a pair of links 22, 22 and 23, 2
3 are integrally formed at five locations on brackets 25, 25 which are attached via levers 24, 24 to one end of the bracket. On the other hand, the other ends of the links 22, 22 are
Drive cylinder device 27 via levers 26, 26
is connected to the rod 28. With this configuration, by extending the rod 28 of the drive cylinder device 27, the opposing fingers 20, 20 are expanded, and by shortening the rod 28, the fingers 20, 20 are expanded.
acts to close.

Above the skewer rods 12, ... of the pallet 10, five guide bars 29, ... are connected to the upper and lower cylinder devices 3 via floating springs 30, ..., respectively.
1, and by interposing the floating spring 30 in this way, the guide bars 29, . Can be absorbed.

Note that a recess 33 is formed at the lower end of the guide bar 29 to fit into the projection 13 at the tip of the skewer bar 12 when the guide bar 29 is lowered. Also, reliefs 15a, 15a are formed in the workpiece receivers 15, 15 so that the guide bar 29 does not come into contact with the workpiece receivers 15, 15 when the guide bar 29 descends.

The operation related to the above configuration will be explained.

When the pallet 10 is raised by a lifting mechanism (not shown) and stopped at a predetermined position, the opening/closing cylinders 17, 1
7 is operated to close the work receivers 15, 15, and at the same time, the clampers 18, 19 clamp the upper part of the skewer bar 12 to position the skewer bar 12.

The work W that has been pressed by the cylinder device 14a and has slid down on the chute 14 is transferred to the work receivers 15 and 1.
5. It is stopped on the top surface. Next, when the drive cylinder device 27 is activated and the rod 28 is shortened,
The shafts 21, 21 are rotated by the links 22, 22, and this rotation is caused by the links 22, 22 and 2.
The brackets 25, 25 are moved in the closing direction via the fingers 20, 23, and the fingers 20, 2
Positioning is performed with 0 sandwiching the workpiece W.
(Situation in Fig. 4) Next, operate the upper and lower cylinders 31 to release the rod 3.
When the guide bar 29 is lowered by extending the workpiece receiver 15, the guide bar 29
It is connected to the upper end of the skewer bar 12 through the reliefs 15a, 15a of 15. At this time, the convex part 13 at the upper end of the skewer bar 12 and the recessed part 33 at the lower end of the guide bar 29 fit together, so that the connection is ensured.

Once connected, the opening/closing cylinder device 17,1
7 to open the work receivers 15, 15, and drop the work W along the guide bar 29.
The skewer rod 12 is inserted through the center hole of the workpiece W, and the workpiece W is loaded onto the pallet 10.

By repeating the above operations, the works W are sequentially loaded. Further, even in a line that manufactures many types of workpieces, there is no need to change setups, so loading work can be performed with this single device.

In this example, five workpieces are loaded at the same time, which has the unique effect of improving productivity, and by changing the number of fingers, any number of workpieces can be loaded at the same time. It is something.

(Effects of the invention) As explained in detail above, the present invention uses a clamper to position a skewer bar erected on a pallet at a fixed position, and a finger actuated by a pair of symmetrically arranged links. After positioning the workpiece on the openable/closable workpiece receiver so that the center hole is located above the skewer bar, a guide bar is inserted into the center hole of the positioned workpiece and connected to the tip of the skewer bar. By opening the workpiece receiver, the workpiece falls along the guide bar and is loaded onto the skewer bar, so even workpieces with different outer diameters or thicknesses can be loaded without changing setups.

Therefore, productivity can be improved, and since there are no dedicated parts, equipment costs can be reduced. Furthermore, even on production lines that manufacture many types of workpieces, there is no need for a dedicated loading device; one device is sufficient, so the installation space for the loading device is small, and equipment costs can be significantly reduced. This can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a workpiece loading device that is an embodiment of the present invention, Fig. 2 is a front view of Fig. 1, Fig. 3 is a sectional view taken along line AA of Fig. 1, and Fig. 4. is the first
BB sectional view in the figure, FIG. 5 is a CC sectional view in FIG. 2, FIG. 6 is a front view of the pallet, and FIG.
FIG. 2 is a front view showing an example of a conventional workpiece loading device. 12... Skewer bar, 14... Shoot, 15... Work receiver, 18, 19... Clamper, 20... Finger, 22, 23... Link, 29... Guide bar.

Claims (1)

[Scope of Claim for Utility Model Registration] A skewer bar erected on a pallet for loading workpieces, a clamper that clamps the tip of the skewer bar and positions it at a fixed position, and a skewer bar for receiving workpieces supplied from a chute. a workpiece receptacle that can be opened and closed; a pair of opposing fingers that are positioned across the outer periphery of the workpiece so that the center hole of the workpiece on the workpiece receptacle is located above the skewer bar; A workpiece loading device comprising: a pair of symmetrically arranged links for simultaneously operating fingers; and a guide bar inserted into a center hole of the positioned workpiece and connected to the tip of the skewer bar.