JPH0260455B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a pallet for transporting products.
In particular, the present invention relates to a general-purpose product transport pallet that holds products in accurate positions and can be widely applied to products having a variety of shapes.

[Conventional technology]

As an example of a conventional product transport pallet,
For example, there is one shown in Japanese Patent Application Laid-Open No. 58-217237.

In the technique disclosed in this publication, a plurality of tapered holes are formed in a base plate, and pins having various lengths and inserted into the tapered holes formed in the base plate are prepared. Then, a pin of an appropriate length is selected in accordance with the support hole drilled in the product, and the appropriate pin is fixed on the base plate by positioning the pin on the base plate. The product is supported by pins fixed on this base plate.

[Problem that the invention seeks to solve]

However, in the conventional conveying pallet as described above, pins must be selected depending on the size of the product or the position of the positioning holes drilled in the product, and the position of the pin on the base plate may vary from time to time. Positioning must be done accordingly. That is, there is a problem in that the work of selecting and positioning the pins is extremely troublesome and the work process increases.

In view of these problems, it is an object of the present invention to provide a pallet for transporting products that can be quickly handled even when the sizes and types of products are different.

[Means for solving problems]

In order to achieve the above object, the present invention takes the following measures. That is, a plurality of positioning holes are bored in the surface of a base plate made of a magnetic material. A magnetic force generating member that generates magnetic force and can be freely attached and detached is disposed on the base plate. This magnetic force generating member forms a positioning pin that engages with a positioning hole formed in the base plate.

Further, a support pin having an engaging portion for engaging with an engaging hole formed in the transported product is pivotally supported by the magnetic force generating member so as to be slidable in the axial direction. A pallet for transporting products is provided with a support pin position adjustment mechanism that arbitrarily determines the axial position of the support pin and maintains the position.

[Effect]

The support pins can be positioned at arbitrary positions on the base plate by switching the magnetic force of the magnetic force generating member. Further, the axial height of the support pin is determined and maintained by a support pin position adjustment mechanism so that the support pin can be engaged with an engagement hole formed in the product.

〔Effect of the invention〕

As described above, by using the product conveyance pallet of the present invention, it is possible to quickly and easily support products of any type or size. Therefore, work efficiency can be greatly improved.

〔Example〕

FIG. 1 is a perspective view showing an embodiment of the present invention.
A base plate 101 made of iron or the like has a rectangular shape, and a positioning hole 103 is bored through the top and bottom surfaces of the base plate 101 . This positioning hole 10
A plurality of positioning holes 103 are formed over almost the entire surface of the base plate 101, and in this embodiment, the positioning holes 103 are regularly arranged.

A magnetic stand 105, which is a magnetic force generating member, is arranged on the upper surface of the base plate 101. This magnetic stand 105 is conventionally known and generates magnetic force by switching a magnetic attraction switching lever 107 to attract it to the base plate 101.

Positioning holes 10 are provided on the back side of this base plate 101.
A positioning pin 111 for engaging with 3 is arranged. That is, as shown in FIG. 2, there is a circular plate 109 on the back side of the magnetic stand 105.
is fixed by a pin 108, and furthermore, two positioning pins 111 are protruded side by side from this circular plate 109. Note that FIG. 2 is a view of the magnetic stand 105 from the bottom side, with the base plate 1
01 indicates the switched state.

The magnetic attraction switching lever 107 is rotatable about the fulcrum shaft 110, and generates magnetic force in the state shown in FIG. The magnetic force of the magnetic stand 105 is demagnetized by rotating the magnetic attraction switching lever 107 approximately 90 degrees downward in FIG. Further, a spring receiving projection 108 is provided protruding from the tip of the magnetic attraction switching lever 107.

A plate-shaped die plate 113 is fixed to the upper surface of the magnetic stand 105 by four bolts 115. Furthermore, this die plate 1
A pin support member 117 is integrally disposed on the upper surface of the pin support member 13 .

The pin support member 117 includes two connecting plates 119 that are integrally joined to the die plate 113, and a cylindrical member 12 that is continuously formed from the connecting plates 119.
Consists of 1.

The two connecting plates 119 are arranged on the die plate 113 so as to be parallel to each other, and among the connecting plates 119, the connecting plate 119 located on the side of the magnetic attraction switching lever 108 of the magnetic stand 105 has a A spring support rod 123 is provided. A coil spring 125 is stretched between the spring support rod 123 and the spring receiving protrusion 108 of the magnetic attraction switching lever 108. That is, the magnetic attraction switching lever 107 is always positioned in the state shown in FIG. 1 due to the biasing force of the coil spring 125, and the magnetic stand 105 is in the state of generating magnetic force.

A support pin fixing lever 123 is arranged between the two connecting plates 119. This support pin fixing lever 123 is connected to the two connecting plates 1 by a central shaft 125.
19, and is rotatable about this central axis 125.

An engagement pawl 127 is formed at one end of the support pin fixing lever 123 for engaging with an engagement groove 145 of the support pin 133, which will be described later. Further, a spring engagement protrusion 129 is formed on the other end side of the support pin fixing lever 123. A coil spring 130 is stretched between the spring engaging protrusion 129 and a spring receiver 131 formed on the die plate 113.

This coil spring 130 biases the support pin fixing lever 123 in the direction of arrow R in the figure about the central axis 125. That is, the engaging claw 127
When the support pin 133 is engaged with the engagement groove 145 of the support pin 133, its role is to maintain the engagement state between the two.

In FIG. 1, the connecting plate 119 is shown with a portion cut away to make the arrangement of the support pin fixing lever 123 easier to understand.

A support pin 133 is inserted into the cylindrical member 121 of the pin support member 117 so as to be movable in the axial direction. An engagement portion 143 that engages with an engagement hole of the product is formed on the tip side of the support pin 133. Further, on the outer peripheral surface of the support pin 133, a plurality of engagement grooves 145 are carved in the axial direction so that the outer peripheral shape is conical. The engagement claw 12 of the support pin fixing lever 123 is inserted into this engagement groove 145.
7 is freely engageable.

The other end of the support pin 133 passes through the cylindrical member 121 and is further supported by a bearing 135 formed on the die plate 113.

At a position between this bearing 135 and the cylindrical member 121, a reversing lever 137 is attached to the support pin 133.
is permanently installed. This reversing lever 137 is rotatable around this axis integrally with the support pin 133. Further, a lever protrusion 139 is provided at the tip of the reversing lever 137 in a protruding manner.

Magnetic stand 10 of die plate 113
Two pilot bushings 141 are formed in the portion protruding from 5. The pilot bush 141 is formed of a rubber-like material in the shape of a ring, and the inside of the ring is formed with a through hole in the vertical direction. A claw of a robot, which will be described later, engages with this pilot bush 141 to lift up the above-described device comprising the magnetic stand 105, support pin 133, and the like.

FIG. 5 is an enlarged view of the engaging portion 143 of the support pin 133. The engaging portion 143 has a conical shape, and two parallel surfaces are formed on the side surfaces of the engaging portion 143.
Two flat portions 144 are formed.

Further, FIG. 6 is a diagram showing an engaging protrusion 601 formed on a product (not shown). This engagement protrusion 601
An engagement hole 602 formed in a shape capable of engaging with the engagement portion 143 of the support pin 133 is bored in the support pin 133 . Note that this engagement hole 602 is connected to the engagement portion 143.
The inner diameter of the engaging portion 143 is slightly larger than the outer diameter so that the engaging portion 143 can be inserted relatively easily. The engaging protrusion 601 of this product is made of an elastic material such as resin.

FIG. 7 is a diagram schematically showing a state in which the engaging portion 143 is engaged with the engaging protrusion 601. The engagement protrusion 143 shown by solid lines in FIG. 7 is shown in a state immediately after being inserted into the engagement hole 602. Furthermore, the engaging portion 143 indicated by the broken line is approximately centered on its axis from the state indicated by the solid line.
It shows the state rotated by 90 degrees, and the arc part 1
43a bites into the width across flats portion 602a of the engagement hole 602. That is, as a result of this, the engaging portion 14
3 and the engaging protrusion 601 is more firmly engaged.

FIG. 3 shows a device that has a claw portion that engages with the pilot bush 141 and allows devices such as the magnetic stand 105 and support pins 133 (hereinafter referred to as magnetic devices) to be moved to any position on the base plate 101. FIG. A plate 303 is connected to a conventionally known X-Y robot 301, and this plate 303 is connected by three bolts 313.
Two pins 306 are connected. Furthermore, a cylinder 305 is connected to the plate 303 on the side of this pin 306, and this cylinder 305
A claw 307 is connected to the tip.

In addition, two bolts 311 are attached to the plate 303.
Arm 309 is connected by. When the X-Y robot 301 moves downward in FIG.
This is for rotating downward in the figure against the biasing force 5.

The cylinder 305 is for making a pawl 307 movable in its axial direction, and this pawl 307 engages with the bush 141, and in this engaged state,
By moving the Y robot 301 upward, the magnet device is lifted. In this state, the magnetic force switching lever 107 is rotated downward in the figure by the arm 309, and the magnetic force of the magnetic stand 105 has disappeared.

FIG. 4 is a perspective view showing the installation for determining the axial height of the support pin 133 by rotating the support pin fixing lever 123 for adjusting the axial height of the support pin 133.

A cylinder 403 is connected to a conventionally known X-Y robot 401, and this cylinder 4
Two claws 405 for gripping the engaging portion 143 of the support pin 133 are connected to the tip of the support pin 133. By driving the cylinder 403, the two claws 405 open and close, and while the engagement portion 403 is gripped by the claws 405, the X-Y robot 40
1 upward or downward in FIG. 4, the position of the support pin 133 is adjusted.

Also, the X-Y robot 401 has a link 407.
are connected by bolts 406. A cylinder 409 is fixed to the tip of the link 407, and a lever 411 that rotates about a fulcrum 413 is connected to the cylinder 409.

This lever 411 has a claw 405 attached to the support pin 133.
When the support pin fixing lever 1 is engaged,
23. Then, with the lever 411 in contact with the support pin fixing lever 123, the cylinder 409 is driven in the forward direction. Then, the lever 411 rotates about the fulcrum 413 so that its tip pushes down the fixed lever 123 in the direction of arrow R in the figure.

As a result, the engagement between the engagement claw 127 of the fixed lever 123 and the engagement groove 145 of the support pin 133 is released, and the support pin 133 becomes movable in its axial direction.

Note that in this embodiment, the support pin fixing lever 123
and an engagement groove 145 carved on the outer periphery of the support pin 133.
This forms a support pin position adjustment mechanism.

Note that although the X-Y robot 301 shown in FIG. 3 and the X-Y robot 401 shown in FIG. , there is no problem. Next, the operation of this embodiment will be explained.

First, the position of the magnet device on the base plate 101 is determined using a device as shown in FIG. That is, the X-Y robot 301 is lowered in FIG.
Insert into 41. In that state, the cylinder 30
5 and move the pawl 307 to the pilot button 1.
41 into the internal hole of the pilot bushing 141 from below. At the same time, the arm 309 rotates the magnetic force switching lever 107 downward in FIG. 3 to demagnetize the magnetic force of the magnetic stand 105.

Therefore, the XY robot 301 is driven with the claw 307 engaged with the bush 141, and the magnet device 105 is moved to an arbitrary position on the base plate 101. At this time, the two positioning pins 111 formed on the lower surface of the magnetic stand 105 are engaged in the positioning holes 103 of the base plate 101, and prevent the magnetic device from rotating on the base plate 101. ing.

Once the position of the magnet device on the base plate 101 is determined, the cylinder 305 is driven to release the claw 3.
07 and the pilot bush 141 are disengaged. Then, the X-Y robot 301 is moved upward in the figure. As a result, magnetic force switching lever 1
The arm 309 that was holding down 07 also moves upward, and the magnetic force switching lever 107 is moved as shown in FIG. 1 by the urging force of the coil spring 125.
The state returns to the state shown in FIG. That is, the magnetic force of the magnetic stand 105 is restored, and the magnetic stand 105 is attracted onto the base plate 101.

Next, once the position of the magnet device on the base plate 101 is determined, the height of the support pin 133 is adjusted. This is because the height of the support pin 133 is set according to the position of the engagement hole of each product, since the position of the engagement hole of each product differs depending on the type and size of the product.

First, in FIG. 4, the X-Y robot 401 is lowered downward in the figure. The cylinder 403 is then driven to grip the engaging portion 143 of the support pin 133 with the claw 405 .

At the same time, the cylinder 409 provided on the link 407 is driven to move the lever 411 to the fulcrum 41.
Rotate around 3. That is, the lever 41
1 is the support pin fixing lever 123 in the direction of arrow R in FIG.
direction to release the engagement between the engagement claw 127 of the support pin fixing lever 123 and the engagement groove 145 of the support pin 133.

After confirming that the engagement between the engagement claw 127 and the engagement groove 145 is released and the claw 405 securely grips the engagement portion 143, the XY robot 401 is driven upward. As a result, the position of the support pin 133, which is now slidable in the axial direction, is determined in the axial direction. Once the position is determined in the axial direction, the pawl 405
Release the grip state of the support pin fixing lever 123.
to the original state, and the engaging claw 127 and the engaging groove 1
45 is restored. This determines the axial position of the support pin 133.

Once the position of the magnet device and the axial position of the support pin 133 have been determined as described above, the product is arranged so that the engagement portion 143 engages with the engagement hole 602 formed in the product. Once the engaging portion 143 is inserted into the engaging hole 602, the reversing lever 137 is rotated by a robot (not shown) or manually, and the engaging portion 143 is rotated to the state shown by the broken line in FIG. As a result, the engaging portion 143 becomes wedged into the engaging hole 602 of the product, and the engaging portion 1
43 and the product's engagement hole 602 becomes firm.

The above-mentioned magnetic blocks are arranged, for example, at the four corners of the base plate 101 as shown in FIG. Place it like this. FIG. 8 is a diagram schematically showing such a state. Once the product is supported by each support pin 133 in this manner, the base plate 101 is placed on a belt conveyor (not shown) or the like, and the product is transported to the next process.

As described above, the product conveyance pallet of this embodiment can handle products of various types and sizes simply by switching the magnetic force of the magnetic stand 105 and adjusting the height of the support pin 133.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a perspective view showing the bottom surface of a magnetic stand, FIG. 3 is a perspective view showing a device for moving the magnetic device, and FIG. 5 is a perspective view showing a device for adjusting the axial position of the support pin, FIG. 5 is a perspective view showing the shape of the support pin engagement portion, and FIG. 6 is a perspective view showing the state of the engagement hole formed in the product. , FIG. 7 is a schematic diagram showing the state in which the support pin engaging portion is engaged with the product engagement hole, and FIG. 8 is a schematic diagram showing the state in which the product is supported by the support pin. 101... Base plate, 105... Magnetic stand (magnetic force generating member), 133... Support pin, 143
...Engagement portion, 117...Pin support member.

Claims (1)

[Scope of Claims] 1. A base plate made of a magnetic material and having a plurality of positioning holes on its surface, and a magnetic force generator having a positioning pin that can be attached to and detached from the base plate by generating magnetic force and that engages with the positioning holes. a support pin having an engaging portion for engaging with an engagement hole formed in a transported product; and the support pin is movable in its axial direction and is pivotally supported by the magnetic force generating member. A pallet for transporting products, comprising: a pin support member for supporting the product; and a support pin position adjustment mechanism that arbitrarily determines the axial position of the support pin and maintains the position. 2. The support pin position adjustment mechanism comprises a plurality of engagement grooves carved on the outer periphery of the support pin, and a support pin fixing lever that can engage and release the engagement grooves. Pallet for transporting products in item 1.