JPH0825606B2 - Parts outflow control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a component outflow control device,
For example, the invention is applied to a guide shooter installed between a component storage box and a target location.

(B) Conventional Technology The conventional technology will be described with reference to FIGS. 3 to 7. A vibrating parts feeder 3 is mounted on a base 2 having legs 1.
Similarly to the above, the vibration type hopper device 4 is fixed. The parts feeder 3 has a vibrating part 5 and a circular bowl 6, and is configured to give a combined vibration in the circumferential direction and the vertical direction to the bowl 6, and supplies the parts from the bowl 6. The tube 7 is stretched.

Explaining the hopper device 4, the parts storage box 8
Is supported by a column 9 which is firmly erected on the base 2, and a guide shooter 10 is installed to replenish the bowl 6 with the components from the storage box 8. As is apparent from FIG. 4, the guide shooter 10 has a U-shaped cross-section that is opened upward, and there is no rigid connection structure with the storage box 8 and the support 9, so that only the guide shooter 10 can vibrate. Has become. That is, as shown in FIGS. 5 and 6, a gap 11 is formed between the housing box 8 and the guide shooter 10, and the guide shooter 10 itself is elastically held by the support rubber 12. The support rubber 12 is installed between the bracket 13 welded to the support column 9 and the guide shooter 10, so that only the guide shooter 10 can vibrate. An electromagnetic vibrator 14 is installed to vibrate the guide shooter 10. This is the third
It is firmly fixed on a support base 15 as shown, and its output shaft 16 is connected to the guide shooter 10 via a bracket 17.

The bottom plate 18 of the storage box 8 is inclined so as to be apparent from FIGS. 3 and 5, and a component outlet 19 is opened in the lower portion thereof to prevent excessive outflow of the components. Therefore, the regulation plate 20 is provided. The regulation plate 20 is made of a material such as vinyl chloride and has a flexible property, and a passage gap 22 is provided between the regulation plate 20 and the sliding plate (bottom plate) 21 of the guide shooter. In order to adjust the vertical position of the regulation plate 20, a vertical long hole 24 is formed in the front wall plate 23 of the storage box 8 and the bolt is inserted here.
The wing nut 26 is passed through and the regulation plate 20 is tightened. 27 is a holding plate.

FIG. 7 shows a stick 28 that has entered the bowl 6, the lower end of which is extended close to the bottom plate of the bowl 6 and the upper end of the stick 28 being connected to a detection switch 29. is there. When a required amount of parts (for example, a projection nut) is contained in the bowl 6, vibration of the bowl 6 causes the parts to flow in the circumferential direction on the bottom plate.
The component 28 is pushed by the component and continues to take an inclined posture, whereby the detection switch 29 is in a state in which no electrical signal indicating that the component is insufficient is output. Note that FIG. 4 is a three-dimensional view showing the relationship between the storage box 8 and the guide shooter 10.

When the parts in the bowl 6 are exhausted, the stylus 28 hangs down and the detection switch 29 outputs a signal indicating that the parts are insufficient. This signal actuates the vibrator 14 to force the guide shooter 10 to vibrate, and the vibration is also transmitted from the delivery port 19 to the part in contact with the sliding plate 21, and the part is restricted by the regulating plate.
It slides down on the sliding plate 21 while pushing 20 open.

(C) Problems to be Solved by the Invention The above-described conventional techniques have the following problems. The restriction plate 20 prevents the parts from freely flowing out when the vibrator 14 is stopped, and also serves as a limit to prevent excessive parts from flowing out when the vibrator is activated. Also in the above, a phenomenon occurs in which the sliding plate 21 slides down as if it spills out from the passage void 22.

Such a phenomenon occurs when the parts feeder 3 and the hopper device 4 are both mounted on the single base 2, the vibration of the parts feeder 3 is transmitted to the hopper device 4 via the base 2, and eventually, The guide shooter 10 vibrates, which induces an inadvertent outflow of parts. Therefore,
The restriction plate 20 can be lowered to reduce the passage space, or the restriction plate 20
It is preferable to increase the hardness of the control plate 20. However, in this case, the regulation plate 20 cannot be pushed open unless the amplitude and the frequency of the guide shooter 10 are increased to vibrate considerably.

Vibrator 14 should be given special attention.
However, there is a problem in that the components on the guide shooter 10 generate intense noise and the housing box 8 itself also generates high noise.

(D) Means for Solving the Problem and Its Action The present invention is provided to solve the above-mentioned problems, and in the case where the guide shooter projects from the housing box of the parts, the guide shooter The braking member is connected to the end of the sliding plate in a state where the surface of the sliding plate and the braking surface of the braking member are smoothly continuous to form a joint boundary part, and the back surface of the sliding plate behind the braking member is assisted. The members are fixedly hung down, the iron core of the electromagnet is placed in close contact with the inner surface of the braking member and the inner surface of the auxiliary member, and the joint boundary crosses the end of the sliding plate in a direction substantially perpendicular to the outflow direction of the component. The joint boundary part has a structure in which the back surface of the sliding plate and the braking member are welded, and a part above which the sliding plate and the braking member are not directly welded is provided. Both members are made of iron and The magnetic flux lines from the iron core are formed in a loop shape over the braking member, the sliding plate and the auxiliary member by the above means. Then, the magnetic flux lines at the joint boundary portion mainly pass through the welded portion, but since there is a portion where the sliding plate and the braking member are not directly welded, when the moving parts are in a state of crotch at the joint boundary portion. This time, the magnetic flux lines also pass through the component, which causes the component to be adsorbed to the joint boundary and stopped. When the electromagnet is de-energized, the attractive magnetic force on the component disappears and the joint boundary is smooth, so the component slides downwards. (E) Example The example of FIGS. 1 and 2 , FIG. 3 to FIG. 7 only show different points from the prior art, and those having the same function as the members of FIG. 3 to FIG. The description is omitted.

An iron braking member 30 is welded to an end of the sliding plate 21, and a braking surface 31 formed on the upper surface of the sliding member 21 is continuously and smoothly connected to the surface of the sliding plate 21. The braking member 30 is formed by cutting a thick plate into an elongated shape as illustrated, and an auxiliary member 32 made of iron and having a similar shape is parallel to the braking member 30 and is provided on the back surface of the sliding plate 21 behind the braking member 30. An electromagnet 33 having a coil as shown in the figure is attached between both members 30 and 32 which are welded and fixed and hung from the back surface of the sliding plate 21, and the iron core 34 of which is attached to the braking member 30 and the auxiliary member 32. As shown in the drawing, the inner surface of each of the above is closely attached. Electromagnet 33
When is excited by a direct current, an attractive magnetic force is generated in the braking member 30, and in particular, the vicinity of the end of the braking surface 31 and the sliding plate 21 (the portion indicated by the reference numeral 35), in other words, the joining of the braking surface 31 and the sliding plate 21. The suction force to the parts is exerted more strongly near the boundary. That is, as is apparent from FIG. 1, the joint boundary portion welds the back surface of the sliding plate 21 and the braking member 30 and forms a mere butted portion above which the sliding plate and the braking member are not directly welded. I am doing it. And the braking member
30, the slide plate 21, and the auxiliary member 32 are all made of iron.

Therefore, the magnetic flux lines from the iron core 34 are formed in a loop shape over the braking member 30, the sliding plate 21, and the auxiliary member 32. In this case, the magnetic flux lines passing through the joining boundary portion 35 only slightly pass through the welded portion, and the non-welded portion has very little passage of the magnetic flux lines. As a result, when the part reaches the non-welded part,
That is, when the component is in a state where the braking surface 31 and the sliding plate 21 are in a crotch state, the magnetic flux lines sufficiently pass through the component as well, so that the suction braking force is exerted on this component. As is clear from FIGS. 1 and 2, the boundary portion is arranged so as to cross the end portion of the sliding plate in a direction substantially perpendicular to the outflow direction of the component.

Even if some components slide down on the sliding plate 21 while the vibrator 14 is stopped, the components are attracted by the attractive magnetic force at the joining boundary portion between the braking surface 31 and the sliding plate 21, and particularly the joining boundary portion Since it is almost orthogonal to the outflow direction,
Parts such as the projection nuts that slide down are braked securely and stopped. Since the joining boundary is in the orthogonal state as described above, all the components are adsorbed, and when the number of such components increases, the components adhered by the magnetic force are braked over the entire width of the sliding plate 21. It will be in a state where it is applied. This prevents the subsequent parts from coming out irregularly from the guide shooter 10 (for example into the bowl 6).

On the other hand, when the energization to the electromagnet 33 is cut off and the attracting magnetic force disappears, and at the same time when the vibrator 14 starts operating, the parts that have been braked flow out from the guide shooter 10 and from the passage gap 22. Also comes out continuously.

(F) Effect According to the present invention, since the sliding plate, the braking member, the auxiliary member, and the like are all made of iron, the magnetic flux lines generated from the iron core pass through these members in a loop shape, and especially slippage is caused. Since the welding mode of the plate and the braking member is as described above,
More magnetic flux lines will pass through the parts that are in the state of crotch at the joint boundary part, so that sufficient suction braking force for the parts can be obtained, and all parts that have slipped down carelessly stop To be made. And since this joint boundary part is installed in the transverse direction as described above,
Optimal for demonstrating the function of stopping parts.

Since the parts can be magnetically braked as described above, the hardness of the regulation plate and the size of the passage gap as shown in FIG.
It is no longer necessary to set the values so that the components do not leak easily, and therefore, the vibration state with respect to the guide shooter can be minimized, and the noise problem, which is the most important issue, can be minimized. .

[Brief description of drawings]

1 and 2 are embodiments of the present invention. FIG. 1 is a side view and FIG. 2 is a plan view. 3 to 7 are conventional examples, FIG. 3 is a side view, FIG. 4 is a three-dimensional view, FIG. 5 is a sectional view, and FIG. 6 is a sectional view taken along line (7)-(7) of FIG. Figures and 7 are cross-sectional views. 8 ... Storage box, 10 ... Guide shooter, 21 ... Sliding plate,
30 …… Brake member, 31 …… Brake surface, 35 …… Boundary part, 32
…… Auxiliary member, 33 …… Electromagnet, 34 …… Iron core.

Claims (1)

[Claims] 1. A guide shooter protruding from a housing box for components, wherein a braking member is connected to an end portion of a sliding plate of the guide shooter in a state where the surface of the sliding plate and the braking surface of the braking member are smoothly continuous. To form a joint boundary part, and an auxiliary member is fixedly hung on the back surface of the sliding plate behind the braking member,
The iron core of the electromagnet is placed in close contact with the inner surface of the braking member and the inner surface of the auxiliary member, and the joining boundary is in a state of crossing the end of the sliding plate in a direction substantially perpendicular to the outflow direction of the parts, and joining. The boundary portion has a structure in which the back surface of the sliding plate and the braking member are welded, and a portion above which the sliding plate and the braking member are not directly welded is provided, and the sliding plate, the braking member, and the auxiliary member are both made of iron, A component outflow control device, characterized in that the electromagnet is configured to be intermittently energized.