JPH0720090Y2 - Clog removing device for screw aligner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is to eject compressed air into a container having a pair of mortar-shaped guide walls facing each other to agitate internal screws and In a screw aligner that aligns an alignment groove formed in the inner circumferential direction and aligns the screws on the alignment groove with an alignment passage formed separately from the guide wall, at a connecting portion between the alignment groove and the alignment passage. The present invention relates to a clogging removal device that removes clogging of screws.

(Prior Art) As shown in JP-A-62-230522 and JP-A-61-148823, screws are agitated in a container having a pair of mortar-shaped guide walls facing each other, and the guides are agitated. 2. Description of the Related Art There is a known screw aligner that guides screws arranged in a screw shaft accommodating groove formed along the circumferential direction of a wall to an alignment passage so that the screws can be taken out in a screw aligned state.

In the above technique, as described in FIG. 5 of Japanese Utility Model Laid-Open No. 61-148823, on the boundary between the groove for aligning screws inside the container and the alignment passage extending outside the container, that is, on the alignment groove. A step is formed at the inlet between the surface that supports the lower surface of the heads of the screws and that of the alignment passage, and there is a step on the front side with a gap allowing the heads of the screws to enter the stepped portion. A separate plate is arranged to prevent the misaligned screws from entering the alignment passage. Then, an introduction port for the alignment screws is formed between the end surface of the separate plate and the front end of the alignment groove into the alignment passage.

By the way, a phenomenon occurs in which compressed air is ejected into the container, the heads of the misaligned screws fall into the inlet, and the tip of the shaft portion is easily stuck inward. Normally, the screw shank of this protruding screw hits another screw that is stirred in the container and ejects the screw from the inlet to return it to the container, but the length of the shank In the case of small screws, the length of the tip of the shaft protruding into the container is insufficient, and the shaft tilts along the guide wall surface, making it difficult to hit other screws. The number of machines that are ejected is reduced, causing clogging at the inlet, which causes a decrease in alignment efficiency. Similarly, the screws that are inserted sideways with respect to the introduction port have a low probability of hitting other screws because the part of the head only slightly protrudes inward of the container, and are easily clogged.

(Object of the Invention) The present invention solves the above problems and reduces the probability that misaligned screws will enter the introduction port, and at the same time, the head of the screws will enter or enter the introduction port. Even if the tips of the screws are projected along the inside of the container without being arranged along the guide wall, the clogging of the screws at the inlet can be removed and the alignment efficiency can be improved. An object of the present invention is to provide a clogging removal device for a class aligner.

(Means for Achieving the Purpose) In order to achieve the above-mentioned object, a clogging removal device for a screw aligning machine according to the present invention includes a container in which a pair of mortar-shaped guide walls facing each other are formed, and this guide. An alignment groove for accommodating a screw shaft portion formed radially outward along the circumferential direction of the wall, and an alignment passage for transferring the screws aligned in the alignment groove formed continuously with the alignment groove in a parallel state. An introduction port that is formed between the alignment groove and the alignment passage, separates the screws aligned on the alignment groove from the screws in the non-alignment state, and guides the screws in the alignment state to the alignment passage. A compressed air jet nozzle that stirs a large number of screws stored in the container along the circumferential direction of the guide wall, and opposes both sides of the introduction port with a width capable of storing the heads of the screws. A pair of removal plates to open the alignment groove. It is characterized in that it is formed so as to gradually rise from the same height as the mouth surface in the stirring direction of the screws.

(Operation and effect of device) In the above configuration, when screws are put in the container and compressed air is jetted from the compressed air jet nozzle to agitate the screws inside, the lower surface of the head of some of the screws is aligned. The screw shaft portion is supported by the opening edge of the groove, is accommodated in the alignment groove, is aligned in the alignment groove, and is guided to the alignment passage through the introduction port. The other screws are agitated in a misaligned state.

By the way, even if the heads of the screws in a non-aligned state may fall into the introduction port, a pair of removal plates are formed opposite to each other on both sides of the introduction port with a width capable of accommodating the heads of the screws. Therefore, the screw shafts of the screws whose heads have fallen into the introduction port lean against the removal plate, and the screw shafts are in an inverted state in which they protrude toward the center of the container. Moreover, since the removal plate is formed so as to gradually rise from the same height as the opening surface of the alignment groove in the stirring direction of the screws, the inclination angle of the screw shaft portion is different from the posture without the removal plate. Is larger and has a posture that easily hits other screws. For this reason,
The other screws collide with the screw shafts of the screws in the introduction port with a high probability, and the screws are ejected from the introduction port and returned into the container.

Similarly, the shafts of the screws that have rolled sideways to the front of the introduction port ride on the removal plate and are skipped in the stirring direction. In this case as well, since the removal plate is gradually raised in the stirring direction of the screws, the screw shaft is returned into the container without being caught in the opening.

As described above, the screws that come in clogged up at the introduction port are easily blown off by the other screws that are being stirred by the removal plate, or are returned to the inside of the container. The blockage is cleared. Therefore, the screws on the alignment groove are smoothly guided into the alignment passage by the introduction port, and the screws can be efficiently aligned.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a screw aligner, which is a container 2 having a pair of guide walls 1a facing each other inside.
An alignment groove 3 for accommodating a screw shaft portion formed radially outward along the circumferential direction of the guide wall 1a, and screws aligned on the alignment groove 3 formed continuously with the alignment groove 3. An alignment passage 4 for transferring N1 in a parallel state, a screw N1 formed between the alignment groove 3 and the alignment passage 4 and aligned on the alignment groove 3, and a non-aligned screw N are separated. And an introduction port 5 for guiding the aligned screws to the alignment passage 4,
A compressed air jet nozzle 6 for stirring a large number of screws N accommodated in the container 2 along the circumferential direction of the guide wall 1a is provided.

An opening / closing lid (not shown) for inserting screws N in the container 2
Is provided. Further, each of the guide walls 1a facing each other in the container 2 is formed in a mortar shape like the conventional one.

As shown in FIG. 5, the alignment groove 3 is opened in the container 2, and its groove width is smaller than the head portion 7a of the screws N and larger than the screw shaft portion 7b. On the other hand, as shown in FIG. 6, the alignment passage 4 is separated from the container 2 by the separate plate 8 and is larger than the head 7a of the screws N.
4a and a shaft portion accommodating portion 4b smaller than the head portion 7a and larger than the shaft portion 7b.

The compressed air jet nozzle 6 is connected to a compressed air supply source.

As shown in FIG. 2, FIG. 3, and FIG. 4, the introduction port 5 is formed in a size into which the head 7a of the screws N can enter,
It is arranged between the end surface of the separate plate 8 and the end portion of the alignment groove 3 that prevent the screws N in an unaligned state from entering the alignment passage 4. Then, in the introduction port 5, there is a step between the surface supporting the lower surface of the head 7a of the screws N in the alignment groove 3 and the head supporting portion 4a supporting the lower surface of the head 7a in the alignment passage 4.
10 are formed.

Next, a pair of removal plates 11 are formed opposite to each other on both sides of the introduction port 5. The removing plates 11 face each other with a width capable of accommodating the head 7a of the screws N (the same width as the head supporting portion 4a of the alignment passage 4), and the screws from the same height as the opening surface of the alignment groove 3 It is formed so as to gradually increase in the N stirring direction.

In the above structure, when the screws N are put in the container 2 and the compressed air is jetted from the compressed air jet nozzle 6 to agitate the internal screws N, the lower surface of the head 7a of some of the screws N1 is aligned with the groove. 3, the screw shaft portion 7b is accommodated in the alignment groove 3 to be aligned in the alignment groove 3, and is guided to the alignment passage 4 via the introduction port 5. Other screws N
Are agitated in a misaligned state.

By the way, since the introduction port 5 between the alignment groove 3 and the alignment passage 4 is formed larger than the head 7a of the screws N,
As shown by the solid line in the figure, some heads 7a of the screws N in an unaligned state may fall into the introduction port 5, but at that time,
A pair of removal plates 11 are provided on both sides of the introduction port 5 for the heads of the screws N.
7a is formed to face each other so that the inlet 5 can be accommodated.
The screw shaft portion 7b of the screws N in which the head portion 7a is dropped is a removal plate.
When leaning against 11, the screw shaft portion 7b is in an inverted state in which it projects toward the center of the container 2. Moreover, since the removal plate 11 is formed so as to gradually rise from the same height as the opening surface of the alignment groove 3 in the stirring direction of the screws N, the posture without the removal plate 11 (indicated by a chain double-dashed line) (Shown), the inclination angle of the screw shaft portion 7b is larger, and the screw shaft portion 7b is in a posture in which it can easily hit other screws N. Therefore, the other screws N collide with the screw shaft portion 7b of the screws N in the introduction port 5 with a high probability, and the screws N are repelled from the introduction port 5 and returned to the container 2. Therefore, the screws N in the normal posture on the alignment groove 3
(Shown by the dotted line) does not become an obstacle to be guided to the alignment passage 4.

Similarly, as shown in FIG. 4, the shaft portion 7b of the screw N that has rolled sideways to the front of the introduction port 5 rides on the removal plate 11 and is blown in the stirring direction. . Also in this case, since the removal plate 11 is gradually raised in the stirring direction of the screws N, the screw shaft portion 7b is returned into the container 2 without being caught in the opening portion.

As described above, the screws N that come into the inlet 5 so as to be clogged are the other screws N that are agitated by the removal plate 11.
Since it is easily repelled by the ball or is returned to the inside of the container 2, the clogging of the screws N is removed. Therefore, the screws N on the alignment groove 3 are smoothly guided into the alignment passage 4 by the introduction port 5, and the screws N can be efficiently aligned.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a screw aligning machine according to the present invention, FIG. 2 is an enlarged side view of an essential part of a clogging removing device of the screw aligning machine, and FIG. 3 is an X-X line of FIG. FIG. 4 is an enlarged sectional view of FIG. 4, FIG. 4 is a perspective view of the clogging removal device seen from one side of the alignment groove and alignment passage, and FIGS. 5 and 6 are Y- of FIG. 1, respectively.
It is an expanded sectional view on the Y line and the ZZ line. Reference numeral N ... Screws, 1a ... Guide wall, 2 ... Container, 3 ... Alignment groove, 4 ... Alignment passage, 5 ... Inlet port, 6 ... Compressed air jet nozzle, 7a ... Head, 7b ... Screw shaft portion, 11 ... Removal plate

Claims (1)

[Scope of utility model registration request] 1. A container having a pair of mortar-shaped guide walls facing each other, an alignment groove accommodating a screw shaft portion formed radially outward along the circumferential direction of the guide walls, and the alignment groove. And an alignment passage for transferring the screws aligned in an alignment groove formed in succession in parallel with each other, and a screw formed between the alignment groove and the alignment passage and not aligned with the screws aligned on the alignment groove. An inlet for guiding the screws in the aligned state to the alignment passage, and a compressed air jet nozzle for stirring the multiple screws housed in the container along the circumferential direction of the guide wall. And a pair of removal plates facing each other on both sides of the introduction port with a width capable of accommodating the heads of the screws, gradually along the stirring direction of the screws from the same height as the opening surface of the alignment groove. Characterized by being formed to be high A device for removing clogging from a sorting machine.