JP2013142030A - Workpiece conveying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly and stably convey a workpiece to a downstream side while avoiding a contact with other workpieces.SOLUTION: A conveying device 1 for workpieces 2 includes: a conveyor 3 where the workpieces 2 are placed; and multiple oscillating bodies 4 arranged above the conveyor 3 in the queue in the conveying direction of the workpieces 2. The oscillating bodies 4 respectively rotate around the centers of the shaft parts 61 extending parallel to the conveyor 3 and orthogonally in the conveying direction and have upstream side arms 42 extending to the upstream side and downstream side arms 43 heavier than the upstream side arms 42 extending to the downstream side. Under the condition of no workpieces 2 contacting with any of the upstream side arms 42 and the downstream side arms 43, the gap h1 between the upstream side arms 42 and the conveyor 3 is bigger than the heights of the workpieces 2. Under the condition of the workpieces 2 disposed on the lower side of the downstream side arms 43 and the workpieces 2 contacting with the downstream side arms 43, the gap h3 between the upstream side arms 42 and the conveyor 3 is smaller than the heights of the workpieces 2.

Description

  The present invention relates to a work transfer device.

  Patent document 1 is disclosing the conveying apparatus which attached the guide claw which can be rock | fluctuated to the side surface of the inclined conveyance rail. The guide claw has a fan-shaped wide portion on the upstream side, and a weight is attached to the wide portion.

  With this configuration, when the workpiece is placed on the downstream portion of the guide claw, the wide portion protrudes onto the conveyance surface, and the wide portion contacts the workpiece and another workpiece on the upstream side. Is blocked.

  When the work placed on the downstream part of the guide claw is paid out, the wide part is lowered by the weight of the weight, and the above-mentioned wide part does not stick out, while the downstream part of the guide claw sticks out on the conveying surface. . Then, another workpiece on the upstream side passes over the wide portion and moves to the downstream side while pushing down the downstream portion of the guide claw.

  When the other workpiece moves to the downstream portion of the guide claw and is placed on the downstream portion of the guide claw, the wide portion protrudes again on the conveyance surface, so that the other workpiece and the upstream side are further Contact with another workpiece is prevented.

  Thereafter, by repeating this operation, the workpieces can be conveyed to the downstream side one by one while avoiding contact between the workpieces.

JP 2000-226117 A

  In order to convey the workpiece downstream in a smooth and stable posture, it is important to support the entire lower surface of the workpiece with a conveyance path such as a roller conveyor. However, the configuration disclosed in Patent Document 1 has a problem in that a part of the lower surface of the workpiece is in contact with the guide claw and the entire lower surface of the workpiece cannot be supported by the conveyance path.

  The present invention has been made in view of such a technical problem, and provides a workpiece transfer device capable of transferring a workpiece to a downstream side in a smooth and stable posture while avoiding contact between the workpieces. With the goal.

  According to an aspect of the present invention, there is provided a work transfer device, comprising: a transfer path on which the work is placed; and a plurality of oscillating bodies provided in the transfer direction of the work above the transfer path. The swinging body rotates about a rotation axis extending parallel to the transport path and perpendicular to the transport direction, and extends to the upstream arm and the downstream side. A downstream arm that is heavier than the upstream arm, and in a state where the workpiece does not contact either the upstream arm or the downstream arm, a gap between the upstream arm and the transport path is In a state where the height of the workpiece is greater than the height of the workpiece and the workpiece is disposed below the downstream arm and the workpiece and the downstream arm are in contact with each other, there is a gap between the upstream arm and the conveyance path. The height of the workpiece Is small, the work conveying apparatus is provided, characterized in that.

  According to the above aspect, the workpieces are sent to the downstream side one by one while avoiding contact between the workpieces. The entire lower surface of the work is in contact with the conveyor, and the work can be conveyed downstream in a smooth and stable posture.

It is the figure which looked at the workpiece conveyance apparatus from the top. It is the figure which looked at the workpiece conveyance apparatus from the side. It is a figure for demonstrating operation | movement of a workpiece conveyance apparatus. It is a figure for demonstrating operation | movement of a workpiece conveyance apparatus. It is a figure for demonstrating operation | movement of a workpiece conveyance apparatus. It is a figure for demonstrating operation | movement of a workpiece conveyance apparatus. It is a figure for demonstrating operation | movement of a workpiece conveyance apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  1 and 2 show the overall configuration of a workpiece transfer apparatus 1 according to an embodiment of the present invention. The conveyance device 1 conveys a workpiece 2 (for example, a gear) to the right side in the drawing, which is the downstream side, and is arranged in the conveyance direction of the workpiece 2 above the conveyor 3 on which the workpiece 2 is placed. And a plate-like rotation stopper 5 that is installed above the plurality of oscillation bodies 4 and restricts the amount of rotation of the oscillation body 4 (for convenience of explanation, it is indicated by a broken line in FIG. 1). ), A swinging body support portion 6 that swingably supports the swinging body 4, and a work stopper 7 disposed on the most downstream side of the conveyor 3.

  The conveyor 3 includes a plurality of rollers 31 and a sheet-like belt 32 wound around the plurality of rollers 31. At least one of the plurality of rollers 31 is a driving roller connected to a motor. When the driving roller is driven by the motor, the belt 32 moves to the downstream side, and thereby the work 2 placed on the belt 32 is conveyed to the downstream side.

  The oscillating bodies 4 are arranged at equal intervals in the conveyance direction of the workpiece 2. The oscillating body 4 includes a cylindrical body 41, an upstream arm 42 extending from the cylindrical body 41 in an upstream obliquely downward direction, and a downstream arm 43 extending from the cylindrical body 41 in an obliquely downward downstream direction. The cylindrical body 41 is externally fitted to a shaft portion 61 extending parallel to the conveyor 3 and perpendicular to the conveying direction from the rocking body support portion 6, whereby the rocking body 4 is connected to the shaft portion 61 and the tubular shape. It can swing freely around the body 41.

  The upstream arm 42 is a substantially T-shaped arm. The upstream arm 42 includes an arm base portion 42a connected to the cylindrical body 41, a work contact portion 42b extending downward at a substantially right angle from the end portion of the arm base portion 42a, and the work contact portion 42b extending from the same end portion. And a stopper abutting portion 42c extending in the direction.

  The downstream arm 43 is a linear arm. The downstream arm 43 includes an arm base portion 43a and a weight portion 43b attached to the arm base portion 43a. The downstream arm 43 is heavier than the upstream arm 42 due to the provision of the weight portion 43b.

  In a state where neither the upstream arm 42 nor the downstream arm 43 is in contact with the workpiece 2, the rocking body 4 rotates clockwise in the drawing due to the weight balance between the upstream arm 42 and the downstream arm 43, and the upstream arm The stopper contact portion 42c of 42 comes into contact with the rotation stopper 5 and stops (the state of the swinging body 4 on the left side in FIG. 2). In this state, a gap h1 larger than the height of the workpiece 2 is formed between the workpiece contact portion 42b and the conveyor 3, and the workpiece 2 can pass below the upstream arm 42.

  In contrast, the gap h <b> 2 between the downstream arm 43 and the conveyor 3 is smaller than the height of the workpiece 2. For this reason, when the work 2 passes below the upstream arm 42 and moves to the lower side of the downstream arm 43, the work 2 comes into contact with the downstream arm 43. When the workpiece 2 moves further downstream, the downstream arm 43 is flipped upward and rotates counterclockwise in the figure.

  In the state of the swing body 4 at the center and the right side in FIG. 2 in which the downstream arm 43 is flipped up, a gap equal to the height of the workpiece 2 is formed between the downstream arm 43 and the conveyor 3, and the workpiece 2 is on the downstream side. The lower side of the arm 43 can be passed. While the workpiece 2 passes below the downstream arm 43, the downstream arm 43 is in sliding contact with the upper surface of the workpiece 2, and the workpiece 2 and the conveyor 3 are brought into close contact with each other by the weight of the weight portion 43b so that the posture of the workpiece 2 is increased. Stabilize.

  Further, the gap h <b> 3 between the upstream arm 42 and the conveyor 3 is smaller than the height of the workpiece 2. This prevents another workpiece 2 on the upstream side from moving downstream and prevents the workpieces 2 from contacting each other.

  When the work 2 moves further downstream or the work 2 is discharged from the conveyor 3 and the contact between the downstream arm 43 and the work 2 is lost, the weight balance between the upstream arm 42 and the downstream arm 43 is caused. The oscillating body 4 rotates clockwise in the figure, and the state of the oscillating body 4 on the left side in FIG.

  3A to 3E show a series of operations of the workpiece transfer device 1. The operation of the workpiece transfer device 1 will be further described with reference to this. In the following description, for convenience of explanation, a plurality of oscillating bodies 4 are referred to as a first oscillating body 4a, a second oscillating body 4b, and a third oscillating body 4c in this order from the downstream side. The workpiece 2 is referred to as a first workpiece 2a, a second workpiece 2b, a third workpiece 2c, and a fourth workpiece 2d in order from the downstream side.

  In FIG. 3A, the workpieces 2a to 2c are disposed below the downstream arm 43 of each of the swinging bodies 4a to 4c, and the workpieces 2a to 2c are on the downstream side of the workpiece stopper 7 or the upstream arm of the swinging bodies 4a and 4b. The state which has stopped in contact with 42 is shown.

  When the first work 2a located on the most downstream side is discharged from the conveyor 3 from this state, the first rocking body 4a rotates clockwise, and the second work 2b moves under the upstream arm 42 of the first rocking body 4a. Will be able to pass through (FIG. 3B).

  Then, the second workpiece 2b passes below the upstream arm 42 of the first rocking body 4a, jumps up the downstream arm 43 of the first rocking body 4a, and moves further downstream. Further, since the second work 2b and the downstream arm 43 of the second rocking body 4b are not in contact with each other, the second rocking body 4b rotates clockwise, and the third work 2c is upstream of the second rocking body 4b. The lower side of the arm 42 can be passed (FIG. 3C).

  Thereafter, the second work 2b and the third work 2c come into contact with the work stopper 7 and the upstream arm 42 of the first rocking body 4a and stop, respectively, and the fourth work 2d is stopped by the upstream arm 42 of the third rocking body 4c. And passes below the downstream arm 43 (FIG. 3D).

  Thereafter, the fourth workpiece 2d comes into contact with the upstream arm 42 of the second rocking body 4b and stops, and the state shown in FIG. 3E is obtained. This state is the same as the state shown in FIG. 3A.

  Therefore, every time the work 2 arranged on the most downstream side is discharged from the conveyor 3, the operations of FIGS. 3A to 3E are performed, and the work 2 is moved downstream one by one while avoiding contact between the works 2. Be transported. The entire lower surface of the work 2 is in contact with the conveyor 3, and as a result, the work 2 can be conveyed downstream in a smooth and stable posture (effect corresponding to claim 1).

  In addition, when passing the lower side of the downstream arm 43, the downstream arm 43 is brought into sliding contact with the work 2, and the work 2 is brought into close contact with the conveyor 3. Thereby, the posture of the work 2 can be further stabilized (effect corresponding to claim 2).

  In addition, although the magnitude | size of each workpiece | work 2 is made into the same magnitude | size in drawing, according to the workpiece conveyance apparatus 1 of the said structure, the workpiece | work 2 of various magnitude | sizes is conveyed in the range which the said operation | movement of the rocking body 4 is not restrict | limited. can do.

  As mentioned above, although embodiment of this invention was described, the said embodiment showed only a part of application example of this invention, and is not the meaning which limits the technical scope of this invention concretely of the said embodiment. .

  For example, although the rotation stopper 5 is constituted by a plate-like member disposed above the plurality of oscillating bodies 4, it is constituted by a pin-like or block-like member that contacts the arm base portion 42a of the upstream arm 42. May be. Or you may make it regulate rotation of the rocking | swiveling body 4 when the downstream arm 43 contacts the conveyor 3. FIG.

  Moreover, although the conveyance path of the workpiece | work 2 was comprised with the conveyor 3, it may be comprised with the roller arrange | positioned at an inclined surface and the structure which the workpiece | work 2 self-propels to the downstream side with the weight may be sufficient.

2 Work 3 Conveyor (conveyance path)
4 Oscillator 42 Upstream arm 43 Downstream arm 61 Shaft (rotating shaft)

Claims (2)

A workpiece transfer device,
A transport path on which the workpiece is placed;
A plurality of oscillating bodies provided side by side in the conveyance direction of the workpiece above the conveyance path;
With
The oscillators are respectively
An upstream arm that extends around an axis of rotation that extends parallel to the transport path and perpendicular to the transport direction, and that is heavier than the upstream arm that extends to the upstream side and the upstream arm that extends to the downstream side Arm and
In a state where the workpiece does not contact either the upstream arm or the downstream arm, a gap between the upstream arm and the transport path is larger than the height of the workpiece, and the workpiece is the downstream arm. In a state where the work and the downstream arm are in contact with each other, the gap between the upstream arm and the transport path is smaller than the height of the work.
A workpiece transfer device. It is a workpiece conveyance apparatus of Claim 1, Comprising:
While the workpiece passes under the downstream arm, the downstream arm is in sliding contact with the workpiece.
A workpiece transfer device.

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