JP4299078B2 - Small work transfer device - Google Patents

Description

  The present invention relates to a small work transfer apparatus.

Conventionally, as the small work transfer device (1P), as shown in FIGS. 7 and 8, an elevating support base (3P) is attached to the frame (2P) of the small work transfer device (1P) so as to be movable up and down. An electromagnet (4P) for magnetizing a small work (not shown) is supported at the lower end of the elevating support base (3P), and the elevating support base (3P) can be moved up and down by a motor (5P). The chute body (6P) is connected to the upper part of the frame (2P), and a sliding chute (7P) is provided on the side of the upper part of the frame (2P). In general, the sliding chute (7P) is slidable back and forth by a motor (8P).
When the small work transfer device (1P) is used to transfer the small work from the lower part of the frame (2P) to the chute body (6P) at the upper part of the frame (2P), the lower part of the frame (2P) is lifted and lowered. The small work is magnetically attracted and picked up by the support base (3P), and the motor (5P) for raising and lowering the elevation support base (3P) is operated to raise the elevation support base (3P). Then, after the lifting support base (3P) and the small work have passed through the height position of the chute body (6P), the motor (8P) for sliding the sliding chute (7P) back and forth is operated. The sliding chute (7P) is advanced. Then, the magnetically attached small work is dropped onto the sliding chute (7P), and the small work is slid down from the sliding chute (7P) to the chute body (6P).
In this case, the timing of the passage of the lifting support base (3P) and the small work and the advance of the sliding chute (7P) is adjusted by a control device (not shown).

  In addition, there is no document or the like in which the above-mentioned conventional technology is described, and there is no information that a person who wants to receive a patent knows at the time of filing a patent. Therefore, the prior art document information cannot be described.

However, in the above-described conventional small work transfer device (1P), in order to transfer the small work from the lower part of the frame (2P) to the chute main body part (6P) at the upper part of the frame (2P), the lifting support base (3P) is moved up and down. Motor (5P) and a motor (8P) for moving the sliding chute (7P) forward and backward are required, and the manufacturing cost of the small work transfer device (1P) increases accordingly. There was a problem.
In addition, a control device for adjusting the timing of the elevating support (3P) and the passage of the small work and the advance of the sliding chute (7P) is required, which increases the manufacturing cost.

In the present invention, as a means for solving the above-described conventional problems, an electromagnet (4) is supported on the lower end of an elevating support base (3) attached to the frame (2) so as to be able to elevate, ) Is moved up and down by a motor (7) attached to the frame (2), and a sliding plate (11) is slidably attached to the upper end of the frame (2). ) Is rotatably supported by the upper end of the sliding chute (13), the sliding plate (11) and the rotating chute (13) are connected by a link (15), and further the rotating chute (13) is a configuration in which the spring (16) is energized in a spring-up state, and the electromagnet (4) magnetizes and picks up a small work from the lower part of the frame (2), and the lifting support platform (3 ) Is carried near the upper end of the frame (2) and at the same time the sliding plate (11) of the rotating chute (13) is pushed up by the elevating support base (3). Therefore, the rotating chute (13) is rotated downward and connected to the chute main body (17), and in this state, the electromagnet (4) is deenergized and is attached to the electromagnet (4). The small work transport device (1) is configured to drop the small work onto the rotating chute (13) and to slide the small work from the rotating chute (13) onto the chute main body (17). is there.
In the frame (2), sensors (8, 9) for detecting the lifting support base (3) are arranged below the top dead center and above the bottom dead center of the lifting support base (3), and the sensor ( 8,9) When the lifting / lowering support (3) is detected by (8) and (9), it is desirable to switch the ascending / descending speed of the lifting / lowering support (3) by the motor (7) to a low speed.
The frame (2) is preferably provided with a guide tube (10) through which the elevating support base (3) passes and is guided, and the lower portion of the guide tube (10) is tapered downward. It is desirable that

  In the small work transfer device (1) of the present invention, the small work is carried to the vicinity of the upper end of the frame (2) by the lifting support base (3), and at the same time, the sliding plate (11) by the lift support base (3). By pushing up, the rotating chute (13) can be rotated downward to connect to the chute main body (17), and a small work can be slid down from the rotating chute (13) to the chute main body (17). Therefore, a small work can be transported from the lower part of the frame (2) to the chute main body (17) with only one power source called the motor (7) for raising and lowering the elevating support base (3).

The present invention will be described with reference to an embodiment shown in FIGS.
As shown in FIG. 1 and FIG. 2, an elevating support base (3) is attached to the frame (2) of the small work transfer device (1) so that it can be raised and lowered, and the lower end of the elevating support base (3) is An electromagnet (4) for magnetizing a small work (not shown) is supported. The electromagnet (4) can be slightly slid up and down with respect to the lifting support base (3), and further, the electromagnet (4) slides to the upper end position inside the lifting support base (3). A contact sensor (not shown) is provided for detecting the occurrence.
In addition, one end of an elevating chain (5) is connected to the upper end of the elevating support base (3), and a balance weight (6) is connected to the other end of the elevating chain (5). The elevating support (3) can be moved up and down by a motor (7) through a chain (5).
The small work refers to small parts such as nuts, bolts, screws, washers, and the like that can be magnetized.

  An upper sensor (8) is disposed on the upper side surface of the frame (2), and a lower sensor (9) is disposed on the lower side surface of the frame (2). ) Is located below the top dead center, the balance weight (6) is located above the bottom dead center, the balance weight (6) is detected by the bottom sensor (9), and When the support base (3) is located above the bottom dead center, the balance weight (6) is located below the top dead center, and the balance weight (6) is detected by the upper sensor (8). .

Further, a guide tube (10) is attached to the central portion (19) of the frame (2), and the lower portion of the guide tube (10) is tapered downward, and the guide tube (10 The upper part of) is tapered upward.
When the lifting support base (3) moves up and down, the lifting support base (3) is guided through the inside of the guide tube (10) to move the lifting support base (3) to the front, rear, left and right. Oscillation is suppressed.
In this way, since the swinging of the lifting support base (3) from front to back and from side to side is suppressed, it is possible to prevent small work pieces magnetically attached to the lifting support base (3) from falling due to the swinging. I can do it.

As shown in FIGS. 3 to 5, a sliding plate (11) is attached to the upper end of the frame (2) via a sliding rod (12), and the sliding plate (11) It can slide up and down along the sliding rod (12). A rotating chute (13) is supported on the upper end of the frame (2), and the rotating chute (13) is rotatable about a rotating shaft (14). Further, the sliding plate (11) and the rotating chute (13) are connected by a link (15), and a spring (16) is attached to the rotating chute (13), The rotating chute (13) is urged to be flipped up by the spring (16).
The upper part of the frame (2) is connected to a chute body (17), and the rotating chute (13) is rotated downward while the rotating chute (13) is rotated downward. Connected to the unit (17).

As shown in FIG. 6, the lower part of the work container (18) for loading and transporting small work is formed in a mortar shape. Therefore, the small work can be easily gathered in the center of the work container (18), and the last work piece can be picked up and picked up by the electromagnet (4) of the lifting support base (3). 18) There is no small work remaining in it.
The lower central portion (19) of the work container (18) uses a non-magnetic material. Therefore, it is possible to prevent the work container (18) itself from being magnetized when the small work in the work container (18) is magnetically attached by the electromagnet (4) of the lifting support base (3). I can do it.

  Furthermore, a work container storage section (20) for storing the work container (18) is provided at the lower part of the frame (2) of the small work transfer device (1). ) So that the center position of the work container (18) coincides with the center position of the lifting support (3) when the work container (18) is completely stored in the work container storage section (20). It is set (see FIG. 1 and FIG. 2).

When a small work is transferred from the work container (18) to the chute body (17) using the small work transfer device (1) as described above, the work container (18) loaded with the small work is removed. The frame (2) is stored in the lower work container storage section (20), and the elevating support base (3) is lowered to move the elevating support base from the work container (18) stored in the lower part of the frame (2). The small work is magnetized and picked up by the electromagnet (4) in (3).
In this case, the balance weight (6) rises as the lifting / lowering support (3) descends, and when the lifting / lowering support (3) is positioned above the bottom dead center, the balance weight (6) Located below the dead point, the balance weight (6) is detected by the upper sensor (8), and the lowering speed of the lifting support (3) by the motor (7) is switched to a low speed.

When the electromagnet (4) of the lifting support base (3) contacts the small work in the work container (18), the electromagnet (4) slightly slides upward, and further, the electromagnet (4) When the upper end position is reached, this is detected by a contact sensor inside the lifting / lowering support (3), the operation of the motor (7) is stopped, and the lowering of the lifting / lowering support (3) stops. Thereafter, the electromagnet (4) of the elevating support base (3) is energized to magnetize the small work and pick it up.
In this way, when the electromagnet (4) abuts the small work, the elevating support base (3) is stopped by the contact sensor, so that the elevating support base (3) is lowered too much and the elevating chain (5) Can be prevented from being magnetically attached to the electromagnet (4).

Next, the motor (7) is operated in the reverse direction to raise the elevating support base (3), and the magnetized small work is carried to the vicinity of the upper end of the frame (2) by the elevating support base (3). increase.
In this case, the balance weight (6) is lowered as the lifting / lowering support (3) is raised, and when the lifting / lowering support (3) is positioned below the top dead center, the balance weight (6) Positioned above the bottom dead center, the balance weight (6) is detected by the lower sensor (9), and the ascending / descending support (3) ascending speed by the motor (7) is switched to a low speed.

  When the elevating support base (3) reaches near the upper end of the frame (2), the upper end face of the elevating support base (3) contacts the sliding plate (11) as shown in FIG. When the elevating support base (3) is raised, as shown in FIG. 5, the upper end surface of the elevating support base (3) pushes up the sliding plate (11) and is connected by the sliding plate (11) and the link (15). The rotated chute (13) is rotated downward against the urging force of the spring (16).

In this case, since the rising speed of the lifting support base (3) is switched to a low speed as described above, the impact when the lifting support base (3) contacts the sliding plate (11) is mitigated. It is possible to prevent the small work piece magnetically attached to the elevating support base (3) from dropping due to the impact.
Further, if a buffer member (not shown) is provided between the upper end surface of the elevating support base (3) and the sliding plate (11), the elevating support base (3) is connected to the sliding plate (11). It is possible to further reduce the impact when it comes into contact with.

When the elevating support base (3) reaches the uppermost position, the operation of the motor (7) stops, the ascent of the elevating support base (3) stops, and the rotating chute (13) Connect with 17).
Finally, the electromagnet (4) of the lifting support base (3) is turned off, and the small work magnetically attached to the electromagnet (4) is dropped onto the rotating chute (13) to rotate the small work. Slide down from the moving chute (13) to the chute body (17).

Thereafter, the motor (7) is actuated again to lower the elevating support base (3), and the work of picking up small workpieces is repeated.
At this time, when the elevating support base (3) is lowered, the sliding plate (11) pushed up by the upper end surface of the elevating support base (3) is lowered, and the sliding plate (11) The rotating chute (13) connected by the link (15) returns to the flip-up state by the urging force of the spring (16) (see FIG. 3).

  When the transport of the small work is repeated in this manner, the remaining amount of the small work in the work container (18) gradually decreases, but even if the remaining amount of the small work decreases, the work container (18 ) Is shaped like a mortar, so small items can easily gather in the center of the work container (18), and are magnetized to the last one of the small items by the electromagnet (4) of the lifting support (3). It can be picked up, and small work does not remain in the work container (18).

Then, when all the small work in the work container (18) has been transported, the lifting support base (3) will reach the lowest position, but in this embodiment, the lifting support base (up to the lowest position ( By repeating the lifting and lowering of step 3) twice, it is possible to eliminate the occurrence of small items.
Finally, the buzzer (not shown) provided in the small work transfer device (1) is sounded or the lamp (not shown) is turned on, and the transfer of the small work in the work container (18) is completed. The worker is informed.

  As described above, the small work is carried to the vicinity of the upper end of the frame (2) by the lifting support base (3), and at the same time, the sliding plate (11) is pushed up by the lifting support base (3) to rotate the chute. (13) can be pivoted downward to connect to the chute body (17) and small work can be slid down from the pivot chute (13) to the chute body (17). ) It is possible to transport small work from the work container (18) at the lower part of the frame (2) to the chute body (17) at the upper part of the frame (2) by using only one power source called the motor (7) that moves up and down. Become.

  The embodiments of the present invention have been described above by way of examples. However, the scope of the present invention is not limited to these embodiments, and can be changed or modified in accordance with the purpose within the scope of the claims. It is.

  INDUSTRIAL APPLICABILITY The present invention can be used industrially as a small work transfer device (1).

It is a description side view of the accessory work conveyance apparatus of this invention. It is a front view of the accessory work conveyance device of the present invention. It is an explanatory side view of the rotation chute (bounce-up state) of the present invention. It is a front view of the rotation chute (bounce-up state) of the present invention. It is a description side view of the rotation chute (rotation state) of this invention. It is explanatory side sectional drawing of the work container of this invention. It is an explanatory side view of a conventional example (sliding chute retracted state). It is a description side view of a prior art example (sliding chute advance state).

Explanation of symbols

1 Transport device
2 frames
3 Lift support
4 Electromagnet
7 Motor
8 Upper sensor
9 Lower sensor
10 Guide tube
11 Sliding plate
13 Rotating chute
15 links
16 Spring
17 Chute body

Claims (4)

  An electromagnet is supported on the lower end of an elevating support base attached to the frame so that it can be raised and lowered. The elevating support base is lifted and lowered by a motor attached to the frame, and a sliding plate is moved up and down on the upper end portion of the frame. The sliding chute is attached to the upper end of the frame so as to be pivotable. The sliding plate and the pivoting chute are connected by a link, and the pivoting chute is bounced by a spring. In this configuration, a small work is magnetically attracted from the lower part of the frame by the electromagnet and picked up by the electromagnet and carried to the vicinity of the upper end of the frame by the elevating support table. By pushing up the sliding plate of the moving chute, the rotating chute is rotated downward and connected to the chute body, and in this state, the electromagnet is turned off and is magnetized to the electromagnet. The small workpiece and is dropped onto the pivoting chutes, small work carrier, characterized in that as allowed to slide down the small product workpiece to the chute main body portion than the pivoting chute.   In the frame, sensors for detecting the lifting support base are arranged below the top dead center and above the bottom dead center of the lifting support base, and when the lifting support base is detected by the sensor, 2. The small work conveying apparatus according to claim 1, wherein the ascending speed or the descending speed is switched to a low speed.   The small work transfer apparatus according to claim 1 or 2, wherein a guide cylinder is attached to the frame to guide the elevating support through the inside.   4. A small work transfer apparatus according to claim 1, wherein a lower portion of the guide tube is tapered downward.

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