JPH0131397Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a pallet for supporting small circular parts, which is used when transferring small circular parts in the order of processes.

[Conventional technology]

Generally, in small diameter bearings, after a plurality of rolling elements are assembled between an outer ring and an inner ring, grease is injected between the two rings and a seal is installed. It is desirable that such operations of injecting grease and assembling the seal be performed continuously in order to prevent foreign matter from entering.

Therefore, by arranging the grease injection device and the seal assembly device in parallel and transferring the small diameter bearing toward both devices, it is possible to prevent foreign matter from entering after the grease injection. , it can have a great effect on improving production efficiency.

[The problem that the idea aims to solve]

However, when the conveyed object to be transferred is circular and small, it is extremely difficult to accurately stop the conveyed object at a predetermined position with respect to each device, and it is difficult to inject grease and incorporate seals. Since this must be done from both sides of the bearing, it is necessary to incorporate an extremely small clamping mechanism capable of stably clamping the outer peripheral surface of the bearing into the bearing conveying device, which is difficult to assemble.

For this reason, injecting grease into a small diameter bearing and assembling a seal have conventionally been performed separately, which has led to problems in workability.

The inventors repeatedly studied transfer feeding of small diameter bearings, and developed a system that does not involve transporting the small diameter bearing itself.
If the small diameter bearing is supported by a pallet and the pallet is transported, transfer feeding of the small diameter bearing is possible, the structure of the transfer feeding device can be simplified, and highly accurate feeding can be achieved. They found that it is possible.

Therefore, the object of this invention is to provide a pallet that can stably support small circular parts such as small diameter bearings that require work from both the front and back sides.

[Means to solve the problem]

In order to achieve the above object, in this invention, a fitting hole for inserting small circular parts is provided in the center of a plate-shaped pallet body having positioning parts on both sides, penetrating the upper and lower surfaces of the pallet body, A horizontal hole is formed in the pallet body that communicates with the outer periphery of the fitting hole and opens at the side surface of the pallet body, and the fitting hole has a small circular part on the inner circumferential surface excluding the communicating part of the horizontal hole. An arc-shaped support surface along the semi-outer circumferential surface is provided in a direction perpendicular to the pallet plate surface, and a circular support surface is inserted into the horizontal hole so that a part of the support surface faces the fitting hole, and is inserted between the support surface and the support surface. One end of an elastically deformable elongated elastic body that presses small parts against its support surface is fixed to the pallet body, and the other end of the elastic body communicates with the horizontal hole and the vertical hole that opens on the pallet plate surface. We adopted a configuration that allows you to face the location.

[Effect]

The pallet with the above structure is made by fitting the small circular part into the fitting hole of the pallet body with the elastic body separated from the support surface, and then bringing the elastic body close to the support surface by its own elastic force. Then, the small circular part is pressed against the support surface by the elasticity of the elastic body, and the small circular part is clamped between the support surface and the elastic body, and the clamping is released by separating the elastic body from the support surface. However, by releasing the clamp, the small circular part is allowed to fall naturally from the fitting hole, or the small part is forcibly pushed out while the support of the elastic body remains unchanged.

〔Example〕

As shown in FIG. 1, a plate-shaped pallet main body 1 has a rectangular shape, and locking grooves 2 are provided on both sides thereof. Further, the ends of both side surfaces are tapered surfaces 3, and a portion of the positioning pin 4 provided on the tapered surface 3 protrudes outward from the tapered surface 3.

In addition, when transferring such a pallet main body 1, the feeding device includes a positioning block A and an engaging protrusion B that can be fitted into the locking groove 2, as shown by the chain line in FIG. A trapezoidal engagement recess C may be provided on one side of the outer periphery of the positioning block A, into which one side having the tapered surface 3 of the pallet body 1 at both ends can fit.

In the center of the pallet main body 1, there is a fitting hole 5 penetrating vertically, and from one side of the outer periphery, the fitting hole 5 is formed.
A horizontal hole 6 communicating with the outer periphery is provided.
The inner diameter of the fitting hole 5 is larger than the outer diameter of the small circular part W, and a semi-annular protrusion 7 is provided on the inner circumferential surface of the fitting hole 5, excluding the communicating part with the horizontal hole 6. The inner peripheral surface of the portion 7 is a support surface 8 of the small part W which is circular.
It is becoming. The radius of the support surface 8 is equal to the outer diameter of the small circular part W, and its circumferential length is slightly shorter than half the circumferential length of the small circular part W (see FIG. 3).

An elongated elastic body 9 is incorporated into the horizontal hole 6, and one end of the elastic body 9 is inserted into a support hole 10 formed on the closed end surface of the horizontal hole 6, and is inserted into the support hole from the outer peripheral surface of the pallet body 1. The elastic body 9 is fixed by tightening the bolt 11 screwed toward the elastic body 10.

The other end of the elastic body 9 faces above a vertical hole 12 that communicates with the open end of the horizontal hole 6 from the lower surface of the pallet main body 1, and a pin (not shown) is inserted into the vertical hole 12 to make the elastic body 9 elastic. By engaging the other end of the elastic body 9 and moving the pin in the radial direction of the vertical hole 12 using a cylinder or the like, the portion of the elastic body 9 facing the support surface 8 is separated from the support surface 8. It can be moved in the direction.

Note that as the elastic body 9, a plate spring or the like can be used in addition to the piano wire as shown in the figure.

The palette shown in the example consists of the above structure,
This pallet is supplied to the transfer feeding device with small circular parts W set inside the fitting holes 5.

Now, pull the other end of the elastic body 9 and drop the small circular part W such as a small diameter bearing into the fitting hole 5 with the part of the elastic body 9 facing the support surface 8 separated from the support surface 8. When the other end of the elastic body 9 is released from the other end with a part of the outer periphery of the small circular part W facing the protrusion 7, the elastic body 9 returns to its original natural state due to its own elasticity. , a small circular part W placed inside the fitting hole 5
is pressed against the support surface 8 of the protrusion 7 by the elasticity of the elastic body 9, and the support surface 8 and the elastic body 9 sandwich the opposing positions of the outer peripheral surface. Note that by centering the fitting hole 5 and the processing tool, it is possible to indirectly center the small circular part and the processing tool.

Further, as shown in FIG. 3, when the small circular part W is held and the other end of the elastic body 9 is pulled in the same manner as described above to release the pressure on the small circular part W, the circumference of the supporting surface 8 is is shorter than 1/2 of the circumference of the small circular part W, so the small circular part W is
The small circular parts W can be taken out from the pallet main body 1 very easily as they fall smoothly and naturally from the fitting hole 5 without getting caught on the support surface 8.
Note that in order to take out the small circular part W, the elastic body 9
It is also possible to directly push the small circular part W and forcibly pull it out without changing the pressing force.

〔effect〕

As described above, according to this invention, with the elastic body separated from the support surface provided on the inner peripheral surface of the fitting hole, a circular small part is dropped into the fitting hole, and then the elastic body is removed. A small circular part can be supported inside the fitting hole by the simple action of restoring itself by its own elasticity, and the small circular part is clamped at opposing positions on the outer periphery between the supporting surface and the elastic body. Therefore, small circular parts can be supported extremely stably. In addition, since the fitting holes penetrate both the upper and lower surfaces of the pallet body, by reversing the pallet body, small parts held from both sides by the supporting surface and the elastic surface can be assembled from both the front and back sides of the pallet body. be able to.

Therefore, it is extremely suitable for transfer feeding of small circular parts that require assembly work from both the front and back, such as the assembly of seals into miniature bearings.
Since it is located in the center of the pallet body, the position of the fitting hole will not change even if the pallet body is turned over.
The pallet body can be accurately positioned from either the front or the back. Therefore, the structure of the pallet positioning device becomes easy, and restrictions on the structure of the machine and device can be reduced.

In addition, since the circumference of the supporting surface is made shorter than half of the circumference of the small circular part, by separating the elastic body from the supporting surface and releasing the pressure on the small circular part, or by pushing down the small part,
The small circular parts fall naturally, and the small circular parts can be discharged very easily and smoothly.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the pallet according to the invention, FIG. 2 is a perspective view of the same pallet as seen from below, and FIG. 3 is a cross-sectional plan view of the above pallet.
FIG. 4 is a cross-sectional side view of the same as above, and FIG. 5 is a schematic diagram of a state in which small circular parts are supported by the same pallet. DESCRIPTION OF SYMBOLS 1... Pallet body, 5... Fitting hole, 6... Horizontal hole, 8... Support surface, 9... Elastic body, 12... Vertical hole.

Claims (1)

[Scope of utility model registration request] A fitting hole for inserting small circular parts is provided in the center of the plate-shaped pallet body, which has positioning parts on both sides, passing through the upper and lower surfaces of the pallet body. A horizontal hole that opens on the side surface is formed in the pallet body, and the above-mentioned fitting hole has an arc-shaped support surface along approximately the semi-outer peripheral surface of the small circular part on the inner peripheral surface excluding the communication part of the horizontal hole. an elastically deformable elongated elastic member installed in a direction perpendicular to the support surface, with a portion thereof facing the fitting hole when inserted into the horizontal hole, and pressing a small circular component inserted between the support surface and the support surface; A pallet for supporting small circular parts, in which one end of the elastic body is fixed to the pallet main body, and the other end of the elastic body communicates with the horizontal hole and faces a communicating position with a vertical hole opened on the pallet plate surface.