JPH0323458B2 - - Google Patents

Description

Detailed Description of the Invention <Field of Industrial Application> The present invention relates to a hopper device for supplying a thin shaft rod such as dental reamer material or surgical suture needle material to a groove wheel, and particularly relates to a hopper device for feeding a thin shaft rod such as dental reamer material or surgical suture needle material to a groove wheel. A groove wheel comprising a slide having a sliding surface parallel to the groove into which the shaft rod is inserted and tilting forward toward the side of the outer peripheral surface of the groove wheel, and an end guide plate provided upright on the side of the slide. This invention relates to a hopper device that supplies thin shaft rods.

In general, dental reamers, surgical needles, and the like require continuous and high-speed positioning of materials during processing. For this reason, as shown in FIG. 1a, by rotating a groove wheel 2 having a large number of grooves 1 on its outer circumferential surface and supplying a thin shaft rod 3 to the grooves 1 of the groove wheel 2, the above-mentioned request can be met. was. However, the hopper device A that supplies the thin shaft rods 3 to the groove wheel 2 is installed on the upper part of the groove wheel 2, and the thin shaft rods 3 are fed into the groove 1 by their own weight. 3 is applied directly to the surface of the grooved sheave 2, resulting in defects such as scratches or deformation of the thin shaft rod 3. For this reason, it was not possible to increase the volume of the hopper device A.

In addition, in the conventional hopper device A, a scooping plate 4 was provided close to the surface of the groove wheel 2 to prevent two or more thin shaft rods 3 from being fed into the groove 1;
When the diameter of the rod is less than 1 mm, accidents frequently occur in which the thin shaft rod 3 gets caught in the gap between the scooping plate 4 and the surface of the groove wheel 2.

Next, as shown in Fig. 1b, the hopper device A is connected to the groove wheel 2.
However, the weight of the many thin shaft rods 3 becomes a force pressing against the groove wheel 2 in the closed hopper, and the thin shaft rods 3 may be scratched or deformed. did. The accident involving scooping board 4 was also similar. In particular, when processing the thin shaft 3'' by pressing it with the presser foot P, the thin shaft 3'' needs to protrude from the groove 1 to some extent, so the scooping plate 4 is placed on the surface of the groove wheel 2. It was not possible to get very close to each other, and this resulted in many collisions.

The present invention relates to a completely new hopper device that fundamentally improves the above-mentioned drawbacks of the conventional hopper device. The groove wheel is erected parallel to the groove of the groove wheel with a gap larger than the diameter thereof, and its lower end is parallel to the sliding surface of the slide and is provided above the front part of the slide with a gap larger than the diameter of the thin shaft rod. A hopper device for supplying a thin shaft rod to a groove wheel is provided.

Therefore, in contrast to the conventional system in which the hopper and the groove wheel have a closed relationship, the present invention uses a granule (or powder) processing concept in which an open part is provided above in the relationship between the hopper and the groove wheel. It is based on a completely new technology that introduces

To explain one embodiment of the present invention with reference to the drawings, in FIGS. 2 and 3, reference numeral 5 denotes a slide constructed by tilting a rail plate 6 forward; The surface is formed parallel to the groove 1' into which only one thin shaft rod 3 is to be inserted, of the groove 1 bored on the outer periphery of the groove wheel 2, and the lower end of the rail plate 6 is slidable. It is configured to protrude in the direction of the axis 7 of the groove wheel 2 from the intersection line between the surface and the outer circumferential surface of the groove wheel 2. Here, the inclination angle of the slide 5 is about 15° to 50° with respect to the horizontal, and most preferably about 30°.

Further, in this embodiment, the rail plate 6 is composed of one flat plate, but it may be composed of two or more rails 6' (indicated by broken lines).

Next, 8 is a partition plate for adjusting the supply amount of the large number of thin shaft rods 3 placed on the slide 5 and supplying the required amount of thin shaft rods 3 to the groove wheel 2.
(the distance 9 from the groove wheel 2 is several times to several tens of times the diameter of the bar) is provided to stand up above the front part of the partition plate 8, and the lower end of the partition plate 8 is parallel to the sliding surface of the slide 5 and is facing the sliding surface. The gate portion 10 is constructed by maintaining a predetermined interval (several times to more than ten times the diameter of the rod). Furthermore, the partition plate 8 can be moved up and down, thereby adjusting the distance from the sliding surface, and the gate part 10 can be adjusted according to the thickness of the thin shaft rod 3. .

Next, reference numeral 11 is an end guide plate for aligning the end faces of the thin shaft rods 3 and for preventing them from falling off the slide 5, and is provided upright on the side of the slide 5. It is sufficient to provide this guide plate 11 on either one side of the slide 5, but if it is provided on both sides, the thin shaft rod 3 can be completely prevented from falling off. Also, the guide plate 11
is provided approximately at right angles to the groove 1' into which the thin shaft rod 3 of the groove wheel 2 is inserted, but if the guide plate 11' is slightly tilted to converge at the tip as shown by the broken line in FIG. The alignment effect of 3 can be further enhanced.

The operation when using the hopper device B consisting of the slide 5, partition plate 8, and guide plate 11 configured as described above will be explained with reference to FIG. When placed and the groove wheel 2 is rotated in the direction of the arrow, the thin shaft rod 3 will move against the guide plate
1, the sliding surface is moved downward while the ends are aligned. The thin shaft rod 3 that has been moved is received by the partition plate 8, and only the necessary amount of thin shaft rod 3 reaches the groove wheel 2 from the lower gate part 10, and the groove 1 of the rotating groove wheel 2 is removed. ’ is inserted. At this time, most of the force a in the sliding direction due to the weight of the thin shaft rod 3 is absorbed by the partition plate 8, and since the thin shaft rod 3 that has come out from the gate part 10 is open at the top, it becomes free and grooves. The force b applied to the car 2 is small. The thin shaft rod 3 in contact with the grooved wheel 2 is pulled upward by the rotation of the groove wheel 2 and floats up, forming a floating portion in a state where the weight C of the thin shaft rod 3 is balanced. This state is similar to the movement of rice grains in a huller or rice mill. The raised portion functions to force the thin shaft rod 3' in the raised portion to be sent into the groove 1 if the thin shaft rod 3 is not fed into the groove 1' on the sliding surface for some reason. There is. That is, the presence of the raised portion increases the chances of insertion into the groove and reduces the chance of missing insertion.

Furthermore, if the distance 9 between the partition plate 8 and the groove wheel 2 is too small, the thin shaft rod 3 that is lifted up by the rotation of the groove wheel 2 will be pulled up higher than necessary and may overflow. After passing, the gate part 10
A phenomenon occurs in which the thin shaft rod 3 becomes jammed and does not come out to the groove wheel side. This is particularly likely to occur when there is little vibration throughout the machine.

At this time, if the interval 9 is set to an appropriate size, the movement of the thin shaft rod 3' within the interval 9 moved by the rotation of the groove wheel 2 will be propagated, and the thin shaft rod where the gate part is jammed will be moved. Move 3 to clear the blockage. That is, it should be adjusted to be wide enough to prevent the uplift from becoming too high, and narrow enough to propagate the movement of the groove wheel. Experimentally, it has been found that several times to several tens of times the diameter of the rod is appropriate.

Next, as mentioned above, the size of the gate part 10, which is made up of the sliding surface of the slide 5 and the lower end of the partition plate 8, is several to ten times larger than the rod diameter, but if it is too large, it will protrude too much and the thin shaft rod 3 will overflow. If it is too small, it can cause a blockage. The size of the interval 9 and the size of the gate part 10 depend on the diameter of the thin shaft 3 as well as the condition of the thin shaft such as length, straightness, surface condition, presence or absence of deposits, as well as the inclination angle of the slide and the condition of the machine. The distance will vary depending on vibration, surface condition of the groove wheel, speed of the groove wheel, movement condition (continuous, intermittent), etc., but the spacing must be larger than the diameter of the thin shaft rod.

Furthermore, poor parallelism between the lower end of the partition plate 8 and the sliding plate 6 is the biggest cause of clogging, and the parallelism between the sliding plate 6 and the groove 1' into which the thin shaft rod 3 of the groove wheel 2 is inserted is , which greatly affects the presence or absence of missing insertions. The parallelism of the partition plate 8 with respect to the groove 1' is also the same. That is,
It is a basic requirement of the invention that the slide plate 6, the partition plate 8 and the lower ends of the partition plate 8 are parallel to the groove'.

Next, the thin shaft rods 3'' passed through the gate part 10 and inserted into the groove 1' of the groove wheel 2 in a granular manner, are sequentially moved above the groove wheel 2 by the rotation of the groove wheel 2, and are separated one by one. After being processed, inspected, and treated (heat treatment, movement) as a solid, it moves to the opposite side of the hopper and forms a thin shaft in the groove that is tilted at approximately 30 degrees with respect to the tangential direction of the outer circumference of the groove wheel. The rod is scooped out from the groove by a take-out plate 12 capable of scooping it out and stored in a receiving box 13.
Of course, depending on the mounting position of the take-out plate 12, it may fall naturally and be stored in the receiving box 13 before being scooped out by the take-out plate 12, and furthermore, the space between the take-out plate 12 and the receiving box 13 may fall. In some cases, a sheet or the like is provided.

Furthermore, this device is suitable for use in the device shown in Japanese Patent Application No. 57-219468 (Japanese Patent Publication No. 2-60460) previously filed by the applicant. Furthermore, although a conical groove wheel is shown as an example in FIG. 3, a cylindrical groove may also be used, and a square groove is shown as an example in FIG. 4, but a V-groove may also be used.

As described above, the hopper device according to the present invention has a slide having a sliding surface inclined to the side of the outer peripheral surface of the groove wheel, and a partition plate having a gate portion above the sliding surface. Most of the weight of the shaft is absorbed by the partition plate, and the force applied to the groove wheel can be made extremely small.Therefore, the thin shaft rod does not wear out, get scratched, or become deformed like in the past, so it is suitable for dental use. It can be used for supplying reamers, surgical needle materials, their cutting edges, etc., and the capacity of the hopper can be increased, improving workability. As the scooping plate is not required, it is possible to completely eliminate accidents caused by the scooping plate, and it is also possible to feed the thin shaft rod into the groove reliably, and since the present invention is inserted from the side, it is possible to completely eliminate accidents caused by the scooping plate. The upper part of the car has features such as being able to be used for processing and other operations.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a conventional hopper device, FIGS. 2 and 3 are front and plan explanatory diagrams of the hopper device according to the present invention, and FIG. 4 is an explanatory diagram of its operation. A and B are hopper devices, 1 is a groove, 2 is a groove wheel,
3, 3', 3'' are thin shaft rods, 4 is a scooping plate, 5 is a slide, 6 is a rail plate, 8 is a partition plate, 10 is a gate part, 11 is a guide plate, 12 is a take-out plate, 13 is a receiving box It is.

Claims (1)

[Claims] 1. A slide having a sliding surface parallel to the groove into which the thin shaft rod of the groove wheel is inserted and tilting forward toward the side of the outer peripheral surface of the groove wheel, and an end guide plate provided upright on the side of the slide. In a hopper device for supplying a thin shaft rod to a groove wheel, a partition plate is placed on the side of the outer peripheral surface of the groove wheel to maintain a distance larger than the diameter of the thin shaft rod to the surface of the groove wheel. The slotted wheel is made to stand up parallel to the groove of the slide, and its lower end is parallel to the sliding surface of the slide and is provided above the front part of the slide with a distance larger than the diameter of the thin shaft rod. Hopper device that supplies shaft rods.