JP2009164381A - Bulk feeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bulk feeder capable of easily removing a component jam if the component jam is caused during movement of an electronic component in a linear passage. <P>SOLUTION: The bulk feeder has a constriction portion NP which has a cross section shape, formed by making the cross section of the linear passage C1 locally small, below an entrance C1a to the linear passage C1 and also allows passage of an electronic component having a width W of reference width+tolerance and a height H of reference height+tolerance, so even if dust, a chip, etc., sticks on the electronic component EC taken in the linear passage C1 so that at least one outer shape dimension between the width W and height H is too large to pass through the constriction portion NP, the electronic component EC can be positively jammed at the position of the constriction portion NP of the linear passage C1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a bulk feeder that supplies electronic components stored in a loose state in an aligned manner.

  A bulk feeder of this type includes a three-dimensional chamber for storing a rectangular parallelepiped electronic component having a length> width = height dimensional relationship or length> width> height dimensional relationship; A two-dimensional room for taking electronic components in a three-dimensional room in a posture in which the width and height are aligned, and an electronic component in the two-dimensional room in a posture in which the directions of width, height, and length are aligned. There is a one-dimensional passage having a rectangular cross section for moving by its own weight.

  The three-dimensional room has a shape that can store electronic parts without restricting the posture thereof, and the electronic parts housed in the three-dimensional room can move freely in the three-dimensional room in a random posture. . The two-dimensional chamber is composed of parallel spaces having a space slightly larger than the maximum width (= reference width + tolerance) or the maximum height (= reference height + tolerance) of the electronic component. The electronic component taken into the dimension room can move in the two-dimensional room in a posture in which the directions of width and height are aligned. The one-dimensional path has an inner surface slightly larger than the maximum width (= reference width + tolerance) of the electronic component and an inner surface slightly larger than the maximum height (= reference height + tolerance). An electronic component that is composed of a passage having a rectangular cross section adjacent to each other and taken into the one-dimensional passage from the two-dimensional chamber moves downward within the one-dimensional passage by its own weight in a posture in which the width, height, and length are aligned. be able to.

The bulk feeder basically performs the desired alignment and supply by controlling the posture of the electronic component in the order of 3D → 2D → 1D. It is important to use electronic components in which the height and the height are within the standard length ± tolerance, the standard width ± tolerance, and the standard height ± tolerance.
Japanese Patent No. 3141236

  By the way, electronic parts are replenished as necessary in the three-dimensional chamber of the bulk feeder, so that dust that has entered the three-dimensional room from the outside during replenishment, or peeled off from the electronic parts during or before replenishment. There is a possibility that dropped pieces or the like may adhere to electronic components housed in the three-dimensional room.

  In particular, since the one-dimensional passage has a cross-sectional shape through which the electronic component can pass in a posture in which the width, height, and length are aligned, the dust and the electronic component taken into the one-dimensional passage are If a chip or the like is attached and the external dimension of at least one of the width and height is increased to the extent that it cannot pass through the one-dimensional passage, the electronic component is clogged in the process of moving through the one-dimensional passage. Supply may stop.

  The occurrence frequency of this component clogging is the frequency of whether or not it occurs once per 10,000 electronic components. However, since the component clogging occurs at various positions in the one-dimensional path, when the component clogging occurs, First, it is necessary to search for a position where the component is clogged and then perform an operation to eliminate the component clogging.

  This position search and clogging work is unexpectedly time-consuming work, and the electronic parts cannot be supplied during the work time. The productivity of a mounter or the like in which the bulk feeder is installed is also greatly affected.

  The present invention was created in view of the above circumstances, and an object of the present invention is to provide a bulk feeder that can easily eliminate a component clogging in the process of moving an electronic component through a one-dimensional path. There is.

  To achieve the above object, the present invention provides a three-dimensional chamber for storing a rectangular parallelepiped electronic component having a length> width = height dimension relationship or a length> width> height dimension relationship in a loose state. A two-dimensional chamber for taking the electronic components in the three-dimensional room in a posture in which the width and height are aligned, and a posture in which the electronic components in the two-dimensional chamber are aligned in the width, height, and length A one-dimensional passage having a rectangular cross-section for taking in and moving by its own weight, provided at a predetermined position of the one-dimensional passage, and locally reducing the cross-sectional shape of the one-dimensional passage It has a cross-sectional shape, and is characterized in that it has a throttle part that allows passage of electronic components whose width is a reference width + tolerance and whose height is a reference height + tolerance.

  According to this bulk feeder, a predetermined cross-sectional shape of the one-dimensional passage has a cross-sectional shape obtained by locally reducing the cross-sectional shape of the one-dimensional passage, and the width W is a reference width + tolerance and the height H is a reference. Since there is a throttle part that allows the passage of electronic components with height + tolerance, dust or debris adheres to the electronic components taken into the one-dimensional passage, and at least one of the width and height looks When the dimension is increased to such an extent that it cannot pass through the throttle part, the electronic component can be positively clogged at the position of the throttle part of the one-dimensional passage.

  In other words, even when an electronic component that causes component clogging is taken into the one-dimensional passage, the electronic component can always be clogged at the same position (the position of the throttle portion), so that component clogging occurs. There is no need to search for the position, and since the position where the component clogging occurs is fixed, the work for eliminating the component clogging can be performed quickly. Therefore, it is possible to simplify the position search and clogging work that accompanies clogging of the parts, and to clog clogging very easily.

  According to the present invention, it is possible to provide a bulk feeder that can easily eliminate a component clogging in the process of moving an electronic component through a one-dimensional path.

  The above object and other objects, structural features, and operational effects of the present invention will become apparent from the following description and the accompanying drawings.

[First Embodiment]
1 to 6 show a first embodiment of the present invention (bulk feeder).

  FIG. 1 is a longitudinal sectional view of the bulk feeder taken in the thickness direction of the second rotor of the rotor, FIG. 2A is a transverse sectional view of the bulk feeder taken along the line aa in FIG. (B) is a cross-sectional view of the bulk feeder cut along line bb in FIG. 1, FIG. 3 is an enlarged perspective view of the electronic component, and FIG. 4 (A) is an enlarged cross-sectional view of the aperture shown in FIG. 4B is an enlarged vertical sectional view of the throttle portion shown in FIG. 1, FIG. 5 is an explanatory view of the operation of aligning and supplying electronic components by the bulk feeder, and FIG. 6 is a diagram showing the opening / closing timing of the ejection valve and the pressure of the ejection air. It is a figure which shows a relationship.

  1 to 6, reference numeral 11 is a center plate, 12a is a first cover plate, 12b is a second cover plate, 13 is a take-in rotor, 14 is a rotor shaft, NP is a throttle portion, and EC is an electronic component. is there.

  First, before explaining the mechanism of the bulk feeder, the electronic component EC used in the bulk feeder will be described with reference to FIG.

  The electronic component EC has a rectangular parallelepiped shape having a dimensional relationship of length L (reference length ± tolerance)> width W (reference width ± tolerance) = height H (reference height ± tolerance). The electronic component EC is specifically a capacitor, inductor, resistor, or the like, and has a predetermined number of external electrodes (not shown) at predetermined positions on the surface.

  Next, the mechanism of the bulk feeder will be described with reference to FIGS. 1, 2A, 2B, 4A, and 4B. In this description, the front side of FIG. 1 is indicated as front, the back side as back, the left side as left, and the right side as right.

The center plate 11 has a space 11a for forming a three-dimensional chamber C3, which will be described later, in the upper part, and a space 11b having a fan shape of approximately 180 degrees is communicated with the space 11a below the space 11a. A space 11c having a fan shape of approximately 90 degrees is communicated with the space 11a on the front side of the space 11b, and a one-dimensional passage C1 described later is formed below the space 11c. It has a rectangular groove 11d. The void 11b has a depth slightly smaller than the thickness of the first rotor portion 13a of the take-in rotor 13 to be described later, and the first rotor portion 13a is rotatably received with its upper portion exposed to the void 11a. To do. The void 11c has a depth slightly smaller than the thickness of the second rotor portion 13b of the take-in rotor 13 to be described later, and the second rotor portion 13b is rotatably received with its upper portion exposed to the void 11a. The rectangular groove 11d is slightly larger than the maximum dimension (= reference width + tolerance) of the width W of the electronic component EC and the maximum dimension of the height H (= reference height + tolerance). The left inner surface of the rectangular groove 11d extends upward in an arc shape along the outer edge of the space 11b. A curved guide surface 11e is provided on the lower left side of the space 11a from the left inner surface of the space 11a to the extended end of the left inner surface of the rectangular groove 11d. Furthermore, an inclined guide surface 11f that forms a boundary between the void 11a and the void 11b is provided on the lower right side of the void 11a.

  The intake rotor 13 is composed of a first rotor portion 13a having a disk shape as a whole, and a second rotor portion 13b formed integrally with or separate from the first rotor portion 13a and having a fan shape of approximately 60 degrees. Become. The center of curvature of the approximately 60 degree arc surface of the second rotor portion 13b coincides with the center of curvature of the annular outer peripheral surface of the first rotor portion 13a, and the rotor shaft 14 is attached to the center of curvature of both. . In addition, a stirring portion 13a1 formed by cutting out a part of the annular outer peripheral surface is provided on the upper portion of the first rotor portion 11a.

  The thickness of the first rotor portion 13a is larger than the maximum dimension of the length of the electronic component EC (= reference length + tolerance), and the thickness of the second rotor portion 13b is the maximum dimension of the width W of the electronic component (= reference). Slightly larger than the maximum dimension (= reference height + tolerance) of width + tolerance) and height H. Further, the radius of curvature of the arc surface of approximately 90 degrees of the second rotor portion 13b is smaller than the radius of the first rotor portion 13a, and the step between the arc surface of the second rotor portion 13b and the annular outer peripheral surface of the first rotor portion 13a. Constitutes two adjacent inner surfaces of the upper curved portion of the one-dimensional passage C1 described later. The dimensions of the two inner surfaces formed by this step are slightly larger than the maximum dimension (= reference width + tolerance) of the width W of the electronic component EC and the maximum dimension of the height H (= reference height + tolerance).

  The intake rotor 13 has first and second surfaces on the front and rear surfaces of the center plate 11 after the second rotor portion 13b is fitted in the space 11c of the center plate 11 and the first rotor portion 13a is fitted in the space 11b. The second cover plates 12a and 12b are assembled into the center plate 11 and the first and second cover plates 12a and 12b by screwing (screws are not shown). During this assembly, the rear portion of the rotor shaft 14 is rotatably inserted into the shaft support hole 12b1 of the second cover plate 12b. Although not shown in the figure, a portion of the rotor shaft 14 protruding from the rear surface of the second cover plate 12b has a predetermined operation on the rotor shaft 14, that is, the take-in rotor 13 is displaced in the direction A in FIG. A drive mechanism for applying an operation of displacing in the B direction and returning it after the displacement is connected.

  Further, by sandwiching the center plate 11 between the first and second cover plates 12a and 12b, the recess 11a of the center plate 11 becomes a three-dimensional chamber C3, and the front surface of the first rotor portion 13 of the intake rotor 13 and the first A parallel space between the rear surface of the cover plate 12a is a two-dimensional chamber C2, and the rectangular groove 11d of the center plate 11 and the circular arc surface of the second rotor portion 13b connected to the upper end of the rectangular groove 11d and the annular shape of the first rotor portion 13a. The step with the outer peripheral surface is a one-dimensional passage C1.

  In short, the three-dimensional chamber C3 has a shape that can store the electronic component EC without restricting the posture thereof, and the electronic component EC stored in the three-dimensional chamber C3 randomly enters the three-dimensional chamber C3. Can move freely in posture. The two-dimensional chamber C2 includes a parallel space having a space slightly larger than the maximum dimension of the width W and the maximum dimension of the height H of the electronic component EC, and the electronic component taken into the two-dimensional chamber C2 from the three-dimensional chamber C3. The EC can move in the two-dimensional chamber C2 in a posture in which the directions of the width W and the height H are aligned. The one-dimensional passage C1 is composed of a passage having a rectangular cross section in which an inner surface slightly larger than the maximum dimension of the width W of the electronic component EC and an inner surface slightly larger than the maximum dimension of the height H are adjacent to each other from the two-dimensional chamber C2. The electronic component EC taken into the one-dimensional passage C1 can move downward by its own weight in a posture in which the width W, height H, and length are aligned in the one-dimensional passage C1.

  The one-dimensional passage C1 has an upper end of a curved portion as an inlet C1a, and has a cross-sectional shape in which the cross-sectional shape of the one-dimensional passage C1 is locally reduced on the lower side (downstream side) of the inlet C1a. An aperture NP is formed. As shown in FIGS. 4 (A) and 4 (B), the narrowed portion NP is constituted by projections 11g and 12a1 having trapezoidal longitudinal sections provided on two adjacent inner surfaces of the one-dimensional passage C1. In the illustrated example, one protrusion 11g is formed on the center plate 11, and the other protrusion 12a1 is formed on the first cover plate 12a. Further, the cross-sectional shape of the narrowed portion NP is a rectangle similar to the cross-sectional shape of the one-dimensional passage C1, and the dimensions WT1 and WT2 of two adjacent inner surfaces of the narrowed portion NP are the maximum width W of the electronic component EC. It is set slightly larger than the maximum dimension (= reference height + tolerance) of (= reference width + tolerance) and height H. That is, the narrowed portion NP allows passage of the electronic component EC whose width is the reference width + tolerance and whose height is the reference height + tolerance.

  Further, as shown in FIG. 4B, an air ejection hole 12a2 for ejecting air into the one-dimensional passage C1 is provided on the lower side (downstream side) of the throttle portion NP of the one-dimensional passage C1. It is provided in a direction orthogonal to the dimension passage C1. In the illustrated example, the air ejection hole 12a2 is provided in the first cover plate 12a constituting one inner surface of the one-dimensional passage C1. An air supply device AFD for ejecting air from the air ejection hole 12a2 is connected to the air ejection hole 12a2 via an air pipe (no symbol). The air supply device AFD is capable of intermittently opening and closing the air pump AP, an ejection valve GV that controls the supply and stop of air related to air ejection, and the ejection valve GV based on a predetermined opening time and closing time. And a controller CON for controlling the operation thereof.

  Next, the operation for aligning and supplying the electronic components EC by the bulk feeder will be described with reference to FIG.

  The operation of aligning and supplying the electronic components EC by the bulk feeder is a non-defective electronic component EC, that is, the length L, the width W, and the height H are the reference length ± tolerance, reference width ± tolerance, and reference height ± tolerance. 5 is stored in a three-dimensional chamber C3 in a loose state, the take-in rotor 13 is displaced by a predetermined angle in the A direction in FIG. 5, and after the displacement, it is displaced by the same angle in the B direction and returned. The operation is performed by continuously or intermittently performing the operation of intermittently ejecting air from the air ejection hole 12a2 (see FIG. 4B) into the one-dimensional passage C1.

  By the operation of the take-in rotor 13, the electronic component EC housed in the three-dimensional chamber C3 is taken from the three-dimensional chamber C3 into the two-dimensional chamber C2 in a posture in which the directions of the width W and the height H are aligned. . Since the upper portion of the first rotor portion 13a of the intake rotor 13 is exposed in the three-dimensional chamber C3, the electronic component EC housed in the three-dimensional chamber C3 is mainly stirred above the first rotor portion 13a. By the stirring by the part 13a1, the direction of the width W and the height H is changed, and the action is taken into the two-dimensional chamber C2.

  Further, the electronic component EC taken into the two-dimensional chamber C2 by the operation of the taking-in rotor 13 has the width W, the height H, and the length direction aligned from the two-dimensional chamber C2 into the one-dimensional passage C1. Captured in posture. Since the upper surface of the second rotor portion 13b of the take-in rotor 13 is located at the bottom of the two-dimensional chamber C2, the electronic component EC taken into the two-dimensional chamber C2 has its length changed by the angle change of the upper surface of the second rotor portion 13b. The direction of the length L is changed, and the action is taken into the one-dimensional passage C1.

  The electronic component EC taken into the one-dimensional passage C1 moves downward in the one-dimensional passage C1 by its own weight in a posture in which the directions of the width W, the height H, and the length L are aligned. The throttle NP is present below (downstream) the inlet C1a of the one-dimensional passage C1, but the width W, height H, and length L of the electronic component EC taken into the one-dimensional passage C1 are respectively determined. When the reference length ± tolerance, reference width ± tolerance, and reference height ± tolerance are satisfied, the electronic component EC passes through the aperture NP.

  Since the electronic component EC is replenished in the three-dimensional chamber C3 of the bulk feeder as necessary, the dust that has entered the three-dimensional chamber C3 from the outside during the replenishment, and the electronic component at the time of replenishment, or before and after that. There is a possibility that a piece or the like peeled off from the EC adheres to the electronic component EC stored in the three-dimensional chamber C3. Therefore, the dust, chips, and the like are attached to the electronic component EC taken into the one-dimensional passage C1 by the above-described alignment supply operation, and at least one of the external dimensions of the width W and the height H is the narrowed portion NP. If it has increased to such an extent that it cannot pass through the electronic component EC, the electronic component EC is clogged with the throttle NP and stopped in the process of moving through the one-dimensional passage C1.

  The air intermittently ejected from the air ejection holes 12a2 into the one-dimensional passage C1 in conjunction with the above-described alignment supply operation is stopped when the electronic component EC taken into the one-dimensional passage C1 is clogged with the throttle NP. In addition, the electronic component EC1 (see the broken line) is blown upward from the narrowed portion NP to exert an action of eliminating clogging. The reason why the air is intermittently ejected is to perform the alignment supplying operation without any trouble by using the non-ejection time, and this point will be described below with reference to FIG.

  Symbols to and tc in FIG. 6 indicate the opening time and closing time of the ejection valve GV of the air supply device AFD shown in FIG. 4B, and the ejection valve GV is at a predetermined opening time to and closing time tc. The operation is controlled by the controller CON so that it can be opened and closed intermittently. As can be seen from FIG. 6, the pressure of the actual air ejected from the air ejection hole 12a2 into the one-dimensional passage C1 gradually increases from the starting point of the opening time to of the ejection valve GV and reaches a peak. It shows a change that gradually decreases from the end point of time to or thereafter.

  In order to blow up the electronic component EC clogged with the throttle NP upward from the throttle NP, a pressure of a predetermined value or more according to the size of the electronic component EC or the like is required. When this pressure value is P1, it becomes the time during which the electronic component EC clogged with the throttle portion NP can be blown upward in the section t1 where the air pressure is equal to or higher than the pressure value P1 (hereinafter referred to as blow-up time t1). A section t2 where the pressure is less than the pressure value p1 is a time during which the blown-up electronic component EC can drop by its own weight (hereinafter referred to as “self-weight falling time t2”).

  Since the blow-up time t1 is a section equal to or greater than the pressure value P1, if the minimum time is secured, the electronic component EC clogged with the throttle NP is blown upward from the throttle NP to eliminate the clogging. Is possible. However, if the next blowing is started before the other electronic component EC blown up together with the electronic component EC clogged by the narrowed portion NP falls to the original height position, the above-described alignment supply operation cannot be performed. . In other words, the above-described alignment supply operation is performed after the other electronic component EC blown up together with the electronic component EC clogged by the narrowed portion NP falls to the original height position, and thus the dead weight falling time t2 It is necessary to set the closing time tc of the ejection valve GV so that a sufficient time can be secured.

  For example, when the blowing time t1 when the opening time to is 0.01 seconds is 0.02 seconds and the electronic component EC clogged with the throttle NP can be blown by 10 mm at the blowing time t1, When the time for another electronic component EC blown up with the component EC to drop to the original height position is 0.03 seconds, in order to obtain a time sufficiently exceeding 0.03 seconds as the dead weight falling time t2. The closing time tc is 0.04 seconds or more.

  Since the opening time to and the closing time tc of the ejection valve GV vary depending on the size and weight of the electronic component EC to be used, the number of electronic components EC existing above the electronic component EC clogged with the throttle portion NP, etc., the opening time to The closing time tc is preferably determined by a method of selecting an appropriate numerical value by a preliminary experiment or the like.

  Thus, according to the above-mentioned bulk feeder, it has a cross-sectional shape in which the cross-sectional shape of the one-dimensional passage C1 is locally reduced on the lower side (downstream side) of the inlet C1a of the one-dimensional passage C1. In addition, since the narrowed portion NP that allows passage of the electronic component having the width W of the reference width + tolerance and the height H of the reference height + tolerance is provided, the electronic component EC taken into the one-dimensional passage C1 has dust. If the electronic component EC is increased to such an extent that at least one of the width W and the height H cannot be passed through the throttle NP, the electronic component EC is positioned at the throttle NP of the one-dimensional passage C1. Can be actively clogged with.

  In other words, even when the electronic component EC causing the component clogging is taken into the one-dimensional passage C1, the electronic component EC can always be clogged at the same position (the position of the narrowed portion NP). It is not necessary to search for the position where the clogging occurs, and the position where the clogging occurs is fixed, so that the work for eliminating the clogging can be quickly performed. Therefore, it is possible to simplify the position search and clogging work that accompanies clogging of the parts, and to clog clogging very easily.

  Further, according to the above-described bulk feeder, the air ejection hole 12a2 for ejecting air into the one-dimensional passage C1 is provided on the lower side (downstream side) of the throttle portion NP of the one-dimensional passage C1, and the air Since the air supply device AFD for ejecting air from the air ejection hole 12a2 is connected to the ejection hole 12a2, even when the electronic component EC taken into the one-dimensional passage C1 is clogged by the throttle NP. The electronic component EC clogged in the throttle portion NP by the air jetted from the air ejection hole 12a2 into the one-dimensional passage C1 can be blown upward from the throttle portion NP to eliminate the clogging.

  Furthermore, according to the above-described bulk feeder, the air supply device AFD can intermittently open and close the ejection valve GV for controlling the supply and stop of the air related to the air ejection based on the predetermined opening time to and closing time tc. Thus, the controller CON for controlling the operation of the ejection valve GV can be set as appropriate so that the opening time to and the closing time tc of the ejection valve GV are appropriately set without causing any trouble in the intended alignment supply operation by the bulk feeder. In the course of the alignment supply operation, the electronic component EC clogged in the narrowed portion NP can be automatically blown upward from the narrowed portion NP to automatically eliminate the clogging.

  Furthermore, according to the above-described bulk feeder, since the narrowed portion NP is constituted by the projections 11g and 12a1 provided on the two adjacent surfaces of the one-dimensional passage C1, complicated processing is required to form the narrowed portion NP. And does not require molding.

  In the above description, the air ejection hole 12a2 is provided in a direction orthogonal to the one-dimensional passage C1, but as shown in FIG. 7A, the air ejection hole 12a2 ′ is directed toward the throttle portion NP. May be provided at an angle. In this way, the air ejected from the air ejection holes 12a2 'can be blown directly onto the electronic component EC clogged in the throttle portion NP, and the electronic component EC can be effectively blown up.

  In the above description, the diaphragm portion NP is constituted by the trapezoidal protrusion 12a1 having a vertical cross section. However, as shown in FIG. 7B, the throttle portion NP ′ is constituted by a protrusion 12a1 ′ having a triangular cross section. May be. By doing so, it is possible to reduce the contact resistance between the narrowed portion NP ′ and the electronic component EC clogged in the narrowed portion NP ′, and to smoothly blow up the electronic component EC by air.

  Furthermore, in the above description, the air ejection holes 12a2 are provided in a direction orthogonal to the one-dimensional passage C1, and air is ejected from the air ejection holes 12a2 into the one-dimensional passage C1 at a predetermined ejection timing. 7 (C), a shutter plate 15 capable of closing the lower side (downstream side) of the air ejection hole 12a2 of the one-dimensional passage C1 is provided in a slit 12a3 formed in the first cover plate 12a so as to be laterally movable. The shutter plate 15 is configured to be laterally moved by a drive source such as a solenoid, and the air ejection holes 12a2 of the one-dimensional passage C1 are formed by the shutter plate 15 at the timing when air is ejected from the air ejection holes 12a2 into the one-dimensional passage C1. If the lower side (downstream side) is closed, the electronic part in which the air blown into the one-dimensional passage C1 from the air blowing hole 12a2 is clogged in the throttle part NP. Blown concentrated in EC, blown up the electronic component EC can be effectively performed.

  Further, in the above description, the air is intermittently ejected from the air ejection hole 12a2 into the one-dimensional passage C1, but (1) the air only when the electronic part EC is clogged in the throttle NP. The clogging can be eliminated by manually opening the ejection valve of the supply device and performing the desired air ejection, or (2) the electronic part EC is placed on the throttle part NP below (on the downstream side) the throttle part NP. An optical sensor is provided for detecting that the air supply is clogged, and only when the clogging is detected by the optical sensor, the controller opens the injection valve of the air supply device for a certain period of time and performs the desired air injection. May be eliminated.

  Further, in the above description, the electronic component EC having a cuboid shape having a dimensional relationship of length L (reference length ± tolerance)> width W (reference width ± tolerance) = height H (reference height ± tolerance) is used. Although shown in conformity, the interval of the two-dimensional chamber C2 is slightly larger than the maximum dimension of the height H and smaller than the maximum dimension of the width W, and the cross-sectional shape of the one-dimensional passage C1 is If changed, an electronic component EC having a rectangular parallelepiped shape having a dimensional relationship of length L (reference length ± tolerance)> width W (reference width ± tolerance)> height H (reference height ± tolerance) is the same as described above. It is possible to align and supply by operation, and to obtain the same clogging elimination effect as described above.

[Second Embodiment]
FIG. 8 is a longitudinal sectional view of a bulk feeder showing a second embodiment of the present invention (bulk feeder). In FIG. 8, reference numeral 21 is a hopper, 22 is a slider, and EC is an electronic component. Since the electronic component EC is the same as that described in the first embodiment, description thereof is omitted here.

  First, the mechanism of the bulk feeder will be described with reference to FIG. In the description here, the front of FIG. 8 is represented as the front, the back is the rear, the left is the left, and the right is the right.

  The hopper 21 has a concave section 21a having a base section in the vertical section constituting the three-dimensional chamber C3 in the upper part, and has a rectangular hole 21b for receiving the slider 22 so as to be movable up and down below the concave part 21a. The three-dimensional chamber C3 has a shape that can store the electronic component EC without restricting its posture, and the electronic component EC stored in the three-dimensional chamber C3 has a random posture in the three-dimensional chamber C3. You can move freely.

  The slider 22 has a rectangular outer shape, and has a concave section 22a having a longitudinal cross-sectional base shape constituting the two-dimensional chamber C2 at the upper portion, and a passage 22b having a rectangular cross section constituting the one-dimensional passage C1 below the concave portion 22a. is doing. The two-dimensional chamber C2 includes a parallel space having a space slightly larger than the maximum dimension of the width W and the maximum dimension of the height H of the electronic component EC, and the electronic component taken into the two-dimensional chamber C2 from the three-dimensional chamber C3. The EC can move in the two-dimensional chamber C2 in a posture in which the directions of the width W and the height H are aligned. The one-dimensional passage C1 includes a passage having a rectangular cross section adjacent to a surface slightly larger than the maximum dimension of the width W of the electronic component EC and a surface slightly larger than the maximum dimension of the height H. The electronic component EC taken into the dimension passage C1 can move downward by its own weight in a posture in which the width W, the height H, and the length are aligned in the one-dimensional passage C1.

  The one-dimensional passage C1 has a boundary with the two-dimensional chamber C2 as an inlet C1a, and a cross section in which the cross-sectional shape of the one-dimensional passage C1 is locally reduced on the lower side (downstream side) of the inlet C1a. An aperture NP having a shape is formed. The narrowed portion NP is constituted by a protrusion 22c having a trapezoidal longitudinal section provided on the four inner surfaces of the one-dimensional passage C1. Further, the cross-sectional shape of the narrowed portion NP is a rectangle similar to the cross-sectional shape of the one-dimensional passage C1, and the dimensions of two adjacent inner surfaces of the narrowed portion NP are the maximum dimensions (= reference) of the width W of the electronic component EC. It is set slightly larger than the maximum dimension (= reference height + tolerance) of width + tolerance) and height H.

  Further, an air ejection hole 22d for injecting air into the one-dimensional passage C1 is formed on one inner surface of the one-dimensional passage C1 on the lower side (downstream side) of the constricted portion NP of the one-dimensional passage C1. It is provided in a direction orthogonal to the dimension passage C1. Although not shown, an air supply device AFD similar to that of the first embodiment for ejecting air from the air ejection hole 22d is connected to the air ejection hole 22d via an air pipe.

  Next, the operation of aligning and supplying the electronic components EC by the bulk feeder will be described with reference to FIG.

  The operation of aligning and supplying the electronic components EC by the bulk feeder is a non-defective electronic component EC, that is, the length L, the width W, and the height H are the reference length ± tolerance, reference width ± tolerance, and reference height ± tolerance. After the electronic component EC that fits in is stored in the three-dimensional chamber C3, the slider 22 is displaced by a predetermined distance in the A direction in FIG. It is performed by performing an operation of intermittently ejecting air from the air ejection hole 22d into the one-dimensional passage C1.

  By the operation of the slider 22, the electronic component EC housed in the three-dimensional chamber C3 is taken from the three-dimensional chamber C3 into the two-dimensional chamber C2 in a posture in which the directions of the width W and the height H are aligned. In the above operation, since the upper part of the slider 22 protrudes into the three-dimensional chamber C3, the electronic component EC housed in the three-dimensional chamber C3 changes its direction of width W and height H by agitation by the upper protrusion of the slider 22. It changes and the effect | action which is taken in in the two-dimensional room C2 is produced. Further, the electronic component EC taken into the two-dimensional chamber C2 by the operation of the slider 22 has a posture in which the width W, the height H, and the length are aligned from the two-dimensional chamber C2 into the one-dimensional passage C1. It is captured. Since the slider 22 moves up and down in the above operation, the electronic component EC taken into the two-dimensional chamber C2 due to the vibration caused by the up-and-down movement changes the direction of the length L and is taken into the one-dimensional passage C1. Such an effect is produced.

  The electronic component EC taken into the one-dimensional passage C1 moves downward in the one-dimensional passage C1 by its own weight in a posture in which the directions of the width W, the height H, and the length L are aligned. The throttle NP is present below (downstream) the inlet C1a of the one-dimensional passage C1, but the width W, height H, and length L of the electronic component EC taken into the one-dimensional passage C1 are respectively determined. When the reference length ± tolerance, reference width ± tolerance, and reference height ± tolerance are satisfied, the electronic component EC passes through the aperture NP.

  Since the electronic component EC is replenished in the three-dimensional chamber C3 of the bulk feeder as necessary, the dust that has entered the three-dimensional chamber C3 from the outside during the replenishment, and the electronic component at the time of replenishment, or before and after that. There is a possibility that a piece or the like peeled off from the EC adheres to the electronic component EC stored in the three-dimensional chamber C3. Therefore, the dust, chips, and the like are attached to the electronic component EC taken into the one-dimensional passage C1 by the above-described alignment supply operation, and at least one of the external dimensions of the width W and the height H is the narrowed portion NP. If it has increased to such an extent that it cannot pass through the electronic component EC, the electronic component EC is clogged by the throttle portion NP and stopped in the process of moving through the one-dimensional passage C1.

  The air intermittently ejected into the one-dimensional passage C1 from the air ejection holes 22d in conjunction with the above-described alignment supply operation is stopped when the electronic component EC taken into the one-dimensional passage C1 is clogged with the throttle NP. In addition, the electronic component EC is blown upward from the narrowed portion NP to exert an action of eliminating clogging. The reason why the air is intermittently ejected is to perform the alignment supply operation without any trouble by using the non-ejection time. Since this point is the same as described in the first embodiment, the explanation here will be given. Omitted.

  Thus, according to the above-mentioned bulk feeder, it has a cross-sectional shape in which the cross-sectional shape of the one-dimensional passage C1 is locally reduced on the lower side (downstream side) of the inlet C1a of the one-dimensional passage C1. In addition, since the narrowed portion NP that allows passage of the electronic component having the width W of the reference width + tolerance and the height H of the reference height + tolerance is provided, the electronic component EC taken into the one-dimensional passage C1 has dust. If the electronic component EC is increased to such an extent that at least one of the width W and the height H cannot be passed through the throttle NP, the electronic component EC is positioned at the throttle NP of the one-dimensional passage C1. Can be actively clogged with.

  In other words, even when the electronic component EC causing the component clogging is taken into the one-dimensional passage C1, the electronic component EC can always be clogged at the same position (the position of the narrowed portion NP). It is not necessary to search for the position where the clogging occurs, and the position where the clogging occurs is fixed, so that the work for eliminating the clogging can be quickly performed. Therefore, it is possible to simplify the position search and clogging work that accompanies clogging of the parts, and to clog clogging very easily.

  Further, according to the above-described bulk feeder, the air ejection hole 22d for ejecting air into the one-dimensional passage C1 is provided on the lower side (downstream side) of the narrowed portion NP of the one-dimensional passage C1, and the air Since the air supply device AFD for ejecting air from the air ejection hole 22d is connected to the ejection hole 22d, even when the electronic component EC taken into the one-dimensional passage C1 is clogged with the throttle NP. The electronic component EC clogged in the throttle NP by the air jetted into the one-dimensional passage C1 from the air ejection hole 22d can be blown upward from the throttle NP to eliminate the clogging.

  Furthermore, according to the above-described bulk feeder, the air supply device AFD can intermittently open and close the ejection valve GV for controlling the supply and stop of the air related to the air ejection based on the predetermined opening time to and closing time tc. Thus, the controller CON for controlling the operation of the ejection valve GV can be set as appropriate so that the opening time to and the closing time tc of the ejection valve GV are appropriately set without causing any trouble in the intended alignment supply operation by the bulk feeder. In the course of the alignment supply operation, the electronic component EC clogged in the narrowed portion NP can be automatically blown upward from the narrowed portion NP to automatically eliminate the clogging.

  In the above description, the air ejection hole 22d is provided in a direction orthogonal to the one-dimensional passage C1, but the air ejection hole is formed in the throttle portion NP in the same manner as shown in FIG. You may provide diagonally in the direction which goes. In this way, it is possible to effectively blow up the electronic component EC by blowing the air ejected from the air ejection hole directly onto the electronic component EC clogged in the throttle portion NP.

  Further, in the above description, the diaphragm portion NP is configured by the trapezoidal protrusion 22c having a longitudinal section, but the diaphragm portion NP is configured by a projection having a triangular section in the same manner as that illustrated in FIG. 7B. May be. In this way, it is possible to reduce the contact resistance between the narrowed portion NP and the electronic component EC clogged with the narrowed portion NP, and to smoothly blow up the electronic component EC with air.

  Further, in the above description, the air ejection holes 22d are provided in a direction orthogonal to the one-dimensional passage C1, and air is ejected from the air ejection holes 22d into the one-dimensional passage C1 at a predetermined ejection timing. 7 (C), a shutter plate capable of closing the lower side (downstream side) of the air ejection hole 22d of the one-dimensional passage C1 is provided in the slit formed in the slider 22 so as to be laterally movable. The plate can be moved laterally by a drive source such as a solenoid, and the lower side of the air ejection hole 22d in the one-dimensional passage C1 by the shutter plate at the timing when air is ejected from the air ejection hole 22d into the one-dimensional passage C1 ( If the downstream side) is closed, the air ejected from the air ejection hole 22d into the one-dimensional passage C1 is concentrated and blown to the electronic component EC clogged in the throttle portion NP. It is possible to perform the blow-up of goods EC effectively.

  Further, in the above description, the air is intermittently ejected from the air ejection hole 22d into the one-dimensional passage C1, but (1) the air is only collected when the electronic part EC is clogged in the throttle NP. The injection valve of the supply device is opened manually to release the clog by performing the desired air ejection, or (2) the electronic part EC is placed on the throttle part NP below (on the downstream side) the throttle part NP. By providing an optical sensor for detecting that the air supply is clogged, and only when the clogging is detected by the optical sensor, the controller opens the injection valve of the air supply device for a predetermined time and performs the desired air injection. You may make it eliminate clogging.

  Further, in the above description, the electronic component EC having a cuboid shape having a dimensional relationship of length L (reference length ± tolerance)> width W (reference width ± tolerance) = height H (reference height ± tolerance) is used. Although shown in conformity, the interval of the two-dimensional chamber C2 is slightly larger than the maximum dimension of the height H and smaller than the maximum dimension of the width W, and the cross-sectional shape of the one-dimensional passage C1 is If changed, an electronic component EC having a rectangular parallelepiped shape having a dimensional relationship of length L (reference length ± tolerance)> width W (reference width ± tolerance)> height H (reference height ± tolerance) is the same as described above. It is possible to align and supply by operation, and to obtain the same clogging elimination effect as described above.

[Third Embodiment]
FIG. 9 is a longitudinal sectional view of a bulk feeder showing a third embodiment of the present invention (bulk feeder).

  The third embodiment is different from the second embodiment in that the roller 23 can be rotated so that a part of each of the two inner surfaces or four inner surfaces of the one-dimensional passage C1 protrudes into the one-dimensional passage C1. The diaphragm portion NP is configured by two or four rollers 23. When there are two rollers 23, the distance between the two opposing rollers 23 is larger than the maximum dimension (= reference width + tolerance) of the width W of the electronic component EC and the maximum dimension of the height H (= reference height + tolerance). It is set slightly larger. In addition, when there are four rollers 23, the facing distance between two opposing rollers 23 and the facing distance between the other two rollers 23 are the maximum dimension (= reference width + tolerance) of the width W of the electronic component EC and the height H. It is set slightly larger than the maximum dimension (= reference height + tolerance). Since the other configuration is the same as that of the second embodiment, the same reference numerals are used and description thereof is omitted.

  The operation of aligning and supplying the electronic components EC by the bulk feeder is a non-defective electronic component EC, that is, the length L, the width W, and the height H are the reference length ± tolerance, reference width ± tolerance, and reference height ± tolerance. After the electronic component EC that fits in the three-dimensional chamber C3 is stored in the three-dimensional chamber C3, the slider 22 is displaced by a predetermined distance in the A direction in FIG. It is performed by performing an operation of intermittently ejecting air from the air ejection hole 22d into the one-dimensional passage C1.

  By the operation of the slider 22, the electronic component EC housed in the three-dimensional chamber C3 is taken from the three-dimensional chamber C3 into the two-dimensional chamber C2 in a posture in which the directions of the width W and the height H are aligned. In the above operation, since the upper part of the slider 22 protrudes into the three-dimensional chamber C3, the electronic component EC housed in the three-dimensional chamber C3 changes its direction of width W and height H by agitation by the upper protrusion of the slider 22. It changes and the effect | action which is taken in in the two-dimensional room C2 is produced. Further, the electronic component EC taken into the two-dimensional chamber C2 by the operation of the slider 22 has a posture in which the width W, the height H, and the length are aligned from the two-dimensional chamber C2 into the one-dimensional passage C1. It is captured. Since the slider 22 moves up and down in the above operation, the electronic component EC taken into the two-dimensional chamber C2 due to the vibration caused by the up-and-down movement changes the direction of the length L and is taken into the one-dimensional passage C1. Such an effect is produced.

  The electronic component EC taken into the one-dimensional passage C1 moves downward in the one-dimensional passage C1 by its own weight in a posture in which the directions of the width W, the height H, and the length L are aligned. The throttle NP is present below (downstream) the inlet C1a of the one-dimensional passage C1, but the width W, height H, and length L of the electronic component EC taken into the one-dimensional passage C1 are respectively determined. When the reference length ± tolerance, reference width ± tolerance, and reference height ± tolerance are satisfied, the electronic component EC passes through the aperture NP.

  Since the electronic component EC is replenished in the three-dimensional chamber C3 of the bulk feeder as necessary, the dust that has entered the three-dimensional chamber C3 from the outside during the replenishment, and the electronic component at the time of replenishment, or before and after that. There is a possibility that a piece or the like peeled off from the EC adheres to the electronic component EC stored in the three-dimensional chamber C3. Therefore, the dust, chips, and the like are attached to the electronic component EC taken into the one-dimensional passage C1 by the above-described alignment supply operation, and at least one of the external dimensions of the width W and the height H is the narrowed portion NP. If it has increased to such an extent that it cannot pass through the electronic component EC, the electronic component EC is clogged and stopped at the throttle portion NP in the process of moving through the one-dimensional passage C1.

  The air intermittently ejected into the one-dimensional passage C1 from the air ejection holes 22d in conjunction with the above-described alignment supply operation is stopped when the electronic component EC taken into the one-dimensional passage C1 is clogged with the throttle NP. In addition, the electronic component EC is blown upward from the narrowed portion NP to exert an action of eliminating clogging. The reason why the air is intermittently ejected is to perform the alignment supply operation without any trouble by using the non-ejection time. Since this point is the same as described in the first embodiment, the explanation here will be given. Omitted.

  As described above, according to the above-described bulk feeder, although the configuration of the narrowed portion NP is different, the same operational effects as those of the second embodiment can be exhibited.

  Further, according to the above-described bulk feeder, since the aperture portion NP is constituted by a plurality of freely rotatable rollers 23, the electronic parts EC clogged in the aperture portion NP are smoothly blown up using the rotation of the rollers 23. Can be done.

  In the above description, the air ejection hole 22d is provided in a direction orthogonal to the one-dimensional passage C1, but the air ejection hole is formed in the throttle portion NP in the same manner as shown in FIG. You may provide diagonally in the direction which goes. In this way, it is possible to effectively blow up the electronic component EC by blowing the air ejected from the air ejection hole directly onto the electronic component EC clogged in the throttle portion NP.

  In the above description, the air ejection holes 22d are provided in a direction orthogonal to the one-dimensional passage C1, and air is ejected from the air ejection holes 22d into the one-dimensional passage C1 at a predetermined ejection timing. 7 (C), a shutter plate capable of closing the lower side (downstream side) of the air ejection hole 22d of the one-dimensional passage C1 is provided in the slit formed in the slider 22 so as to be laterally movable. The plate can be moved laterally by a drive source such as a solenoid, and the lower side of the air ejection hole 22d in the one-dimensional passage C1 by the shutter plate at the timing when air is ejected from the air ejection hole 22d into the one-dimensional passage C1 ( If the downstream side) is closed, the air ejected from the air ejection hole 22d into the one-dimensional passage C1 is concentrated and blown to the electronic component EC packed in the throttle portion NP, and the electronic unit Blown up in the EC can be effectively carried out.

  Further, in the above description, the air is intermittently ejected from the air ejection hole 22d into the one-dimensional passage C1, but (1) the air is only collected when the electronic part EC is clogged in the throttle NP. The injection valve of the supply device is opened manually to release the clog by performing the desired air ejection, or (2) the electronic part EC is placed on the throttle part NP below (on the downstream side) the throttle part NP. An optical sensor is provided for detecting that the air supply is clogged, and only when the clogging is detected by the optical sensor, the controller opens the injection valve of the air supply device for a certain period of time and performs the desired air injection. May be eliminated.

  Further, in the above description, the electronic component EC having a cuboid shape having a dimensional relationship of length L (reference length ± tolerance)> width W (reference width ± tolerance) = height H (reference height ± tolerance) is used. Although shown in conformity, the interval of the two-dimensional chamber C2 is slightly larger than the maximum dimension of the height H and smaller than the maximum dimension of the width W, and the cross-sectional shape of the one-dimensional passage C1 is If changed, an electronic component EC having a rectangular parallelepiped shape having a dimensional relationship of length L (reference length ± tolerance)> width W (reference width ± tolerance)> height H (reference height ± tolerance) is the same as described above. It is possible to align and supply by operation, and to obtain the same clogging elimination effect as described above.

It is the longitudinal cross-sectional view which fractured | ruptured the thickness direction center of the 2nd rotor of the 2nd rotor of the intake rotor which shows the 1st Embodiment of this invention. It is the cross-sectional view which fractured | ruptured the bulk feeder by the aa line of FIG. 1, and the cross-sectional view which fractured the bulk feeder by the bb line of FIG. It is an expansion perspective view of an electronic component. FIG. 2 is an enlarged cross-sectional view of the throttle unit shown in FIG. 1 and an enlarged vertical cross-sectional view of the throttle unit shown in FIG. It is explanatory drawing of the alignment supply operation | movement of the electronic component by a bulk feeder. It is a figure which shows the relationship between the opening / closing timing of an ejection valve, and the pressure of ejection air. It is a figure which shows the partial modification of 1st Embodiment. It is a longitudinal cross-sectional view of the bulk feeder which shows 2nd Embodiment of this invention. It is a longitudinal cross-sectional view of the bulk feeder which shows 3rd Embodiment of this invention.

Explanation of symbols

  EC: electronic component, C3: three-dimensional chamber, C2: two-dimensional chamber, C1: one-dimensional passage, NP, NP '... throttle part, 11g, 12a1, 12a1', 22c ... projection, 12a2, 12a2 '... air ejection hole , 23 ... roller, AFD ... air supply device, GV ... jetting valve, CON ... controller.

Claims (11)

Dimensional relationship of length> width = height or length>width> height dimensional relationship, a three-dimensional chamber for storing the electronic components in a rectangular shape, and a width of the electronic components in the three-dimensional chamber And a two-dimensional chamber for taking in a posture in which the directions of height are aligned, and a transverse cross-sectional rectangle for taking in and moving the electronic components in the two-dimensional chamber in a posture in which the directions of width, height, and length are aligned A bulk feeder with a one-dimensional passage of
The cross-sectional shape is provided at a predetermined position of the one-dimensional passage, the cross-sectional shape of the one-dimensional passage is locally reduced, and the width is a reference width + tolerance and the height is a reference height + tolerance. It has a diaphragm that allows electronic parts to pass through.
A bulk feeder characterized by that. An air ejection hole provided on the downstream side of the throttle portion of the one-dimensional passage, for ejecting air into the one-dimensional passage;
An air supply device connected to the air ejection hole for ejecting air from the air ejection hole;
The bulk feeder according to claim 1. The air supply device has an ejection valve that controls supply and stop of air related to the air ejection,
The bulk feeder according to claim 2. The air supply device has a controller that controls the operation so that the ejection valve can be opened and closed intermittently based on a predetermined opening time and closing time.
The bulk feeder according to claim 3. An optical sensor provided on the downstream side of the throttle portion of the one-dimensional passage, for detecting that the throttle portion is clogged with electronic components;
The air supply device has a controller that opens the ejection valve of the air supply device for a predetermined time only when clogging is detected by the optical sensor.
The bulk feeder according to claim 3. The throttle portion is constituted by a protrusion provided on at least two adjacent inner surfaces of the one-dimensional passage.
The bulk feeder of any one of Claims 1-5 characterized by the above-mentioned. The protrusion has a trapezoidal longitudinal section,
The bulk feeder according to claim 6. The protrusion has a longitudinal cross-sectional triangle,
The bulk feeder according to claim 6. The throttle portion is configured by a roller that is rotatably provided on at least two opposing inner surfaces of the one-dimensional passage so that a part thereof protrudes into the one-dimensional passage.
The bulk feeder of any one of Claims 1-5 characterized by the above-mentioned. The air ejection hole is provided on one inner surface of the one-dimensional passage in a direction orthogonal to the one-dimensional passage.
The bulk feeder according to claim 1, wherein: The air ejection hole is provided on one inner surface of the one-dimensional passage in a direction toward the throttle portion.
The bulk feeder according to claim 1, wherein:

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