JP5699505B2 - Vibration sorting and removal device for defective workpieces - Google Patents

Description

  The present invention relates to a workpiece in which square or circular flange portions are provided at both ends in the axial direction, the shaft portion is broken and one flange portion is missing, or both of the flange portions are partially missing. The present invention relates to an apparatus for sorting and removing a workpiece during vibration conveyance.

As shown in FIG. 10, a rectangular flange portion F ₁ is integrally formed at both ends of a shaft portion K _{1 having} a circular cross section, and a thin coil is wound around the shaft portion K _1. There are electronic parts to be played. The total length (Lw ₁ ) of the “coil bobbin” and the outer diameter (Dk ₁ ) of the shaft portion K ₁ are about 1.75 mm and 0.35 mm, respectively, and are square (in the illustrated example, square). The length (Lf ₁ ) and thickness (Tf ₁ ) of one side of the flange portion F ₁ are 0.88 mm and 0.33 mm, respectively, which are very small electronic components. In the present invention, defective coil bobbins are sorted and removed from the non-defective coil bobbin group, and in the following description, the non-defective and defective coil bobbins are respectively selected from the viewpoint of sorting and removing defective products. These are referred to as “good work W ₁ ” and “bad work W _{11 to} W ₁₃ ”.

Since the electronic component is very small, during handling after molding, the shaft portion K ₁ is broken and one flange portion F ₁ is missing, or each flange portion F ₁ remains, Each of the flange portions F ₁ may be partially lost. Such a defective work needs to be separated and removed from the good work group, and one of the means is vibration selection. .

  From the viewpoint of vibration selection of the electronic component having the above shape, Patent Document 1 is cited as a prior art document of the present invention. The component sorting chute disclosed in Patent Document 1 is a device that sorts and removes an electronic component that is defective due to a loss of one of the enormous portions in an electronic component provided with enormous portions on both sides of a shaft portion. Non-defective electronic components are transported as they are between the left and right guide plates in a falling position, and defective electronic components are transported in a suspended position between the left and right guide plates and suspended from a drop opening provided in the inclined portion. In this configuration, defective electronic components are dropped and sorted out while maintaining the posture.

  However, the part selection chute disclosed in Patent Document 1 is an electronic part having the above-described shape, and when the defective form is a specific shape, that is, only one enormous part of the shaft part is missing, and the other enormous part is left as it is. Only defective products with remaining shapes can be selected. For example, an electronic component lacking both enormous parts falls from between the left and right guide plates and cannot be sorted and collected.

JP-A-5-511117

  It is an object of the present invention to enable vibration sorting and removal of various defective workpieces in which a part of a workpiece of an electronic component provided with square flange portions at both ends of a shaft portion is missing or missing. Yes.

The invention according to claim 1 for solving the above-mentioned problem is that the pair of left and right support blocks are crossed portions of the inclined support surface and the apex portion forming surface formed respectively in the substantially upper half and the substantially lower half of the opposing side surface. And the pair of support blocks are arranged in a state where the respective vertex portions are opposed to each other at a predetermined interval along the horizontal direction, and a gap between each vertex portion is defined as a defective work piece. The shaft portion of the workpiece, which is a dropping port, is supported by the inclined support surfaces of the pair of support blocks and is oscillated and conveyed while supporting the workpiece of the electronic component having the flange portions at both ends of the shaft portion. Is a device that removes defective workpieces such as one of the flange portions that are broken or both of the flange portions are partially missing by vibration selection during conveyance, and the inclination of the pair of support blocks Each inclination angle of support surface Different from each other, that each apex of the pair of support blocks below the other flange portion of one of the defective workpiece flange portion is missing is positioned, the defective workpiece, suspended on the pair of support blocks suspended, interval between the apex of the pair of support blocks forming a chute of the defective workpiece, the shaft portion of the defective workpiece is inserted into the chute, the change of the suspension position, the defective It is characterized in that it is dimensioned so that the work can fall from the drop opening.

  According to the first aspect of the present invention, when the first defective workpiece from which only one flange portion is missing reaches the portions of the pair of support blocks among the various defective workpieces, each vertex portion of the pair of support blocks The distance is such that the first defective workpiece is supported in a suspended posture. That is, the shaft portion of the first defective workpiece is pulled out downward from the dropping port by vibration, and the remaining flange portion is in a suspended state supported by the inclined support surfaces of the pair of support blocks. Since the inclination angles of the inclined support surfaces of the support block are different, the suspension posture is arranged such that the flange portion is inclined with respect to the horizontal so that the side of the inclined support surface having a large inclination angle becomes higher. At the same time, the shaft portion is disposed in a direction inclined with respect to the vertical downward direction, and becomes unstable. That is, the fact that the inclination angles of the inclined support surfaces of the pair of support blocks are different makes the suspension posture of the first defective workpiece unstable. For this reason, the flange portion and the shaft portion of the workpiece in the suspended posture are inclined while the suspension posture is being changed so as to be in a stable horizontal posture and a vertical posture, respectively, due to both conveyance vibration and gravity action. The first defective workpiece is dropped from the drop port by losing the support of the flange portion with respect to the inclined support surface having a large angle, that is, the suspension posture is broken and the flange portion passes through the drop port. And sorted for good work groups.

  In addition, the second defective workpiece in which all of the flange portions are partially missing has the length of one side of the flange portion shortened with respect to the regular length, and thus the whole is dropped as it is from the dropping port. The In addition, depending on the degree of the defect of the flange part of the second defective workpiece, there may be a temporary suspension posture during vibration conveyance. Since the qualitativeity is higher than that of the first defective workpiece, the suspension posture is immediately lost, and the workpiece is dropped from the dropping port in a short time.

  In addition, one flange part alone (third defective work) which is a missing part of the first defective work is mixed alone between good works, but in the middle of vibration conveyance, adjacent peripheral surfaces are a pair. In the midst of an unstable standing posture supported on each inclined support surface of the support block, either the outer surface or the inner surface is oscillated and conveyed in a relatively stable fall posture supported on each inclined support surface. Similarly to the defective workpiece, the single flange portion with respect to each inclined support surface loses its support and is dropped from the dropping port. In addition, there is a case in which either the outer surface or the inner surface of the flange portion alone, which is the third defective workpiece, abuts on any of the inclined support surfaces of the pair of support blocks, slides down to the drop port as it is, and is selectively removed. possible. In addition, the good workpiece is stable in that the shaft portion is horizontal and the flange portions at both ends stand up so that two adjacent peripheral surfaces of the flange portion are supported by the inclined support surfaces of the pair of support blocks. It is conveyed by vibration while maintaining its posture.

  According to a second aspect of the present invention, in the first aspect of the present invention, the height of each apex of the pair of support blocks is such that the apex of the support block having a tilted support surface with a small tilt angle. Thus, it is characterized by shifting along the height direction.

  According to the invention of claim 2, in the hanging posture of each of the first and second defective workpieces, the angle with respect to the horizontal of the flange portion supported by each inclined support surface of the pair of support blocks, and the exit from the drop port. The inclination angle with respect to the vertical of the shaft portion is larger than that when the heights of the vertex portions of the pair of support blocks are the same. In other words, the position in the height direction of each apex portion of the pair of support blocks is shifted along the height direction so that the apex portion of the support block having a small inclination angle is lowered, whereby the first and second The instability of the suspension posture of each of the defective workpieces is further increased, and the first and second defective workpieces are more easily dropped from the dropping port in order to return to the stable suspension posture at a higher speed. Become.

  According to a third aspect of the present invention, in the second aspect of the present invention, the amount of shift in the height direction of each apex portion of the pair of support blocks is the length of one side of the flange portion of the workpiece (1/5 to 1/15). ).

  As in the invention of claim 3, the amount of shift in the height direction of each apex portion of the pair of support blocks is as small as (1/5 to 1/15) of the length of one side of the flange portion of the workpiece. Even a small amount is sufficient to destabilize the suspension posture of the first and second defective workpieces.

In the invention according to claim 4, the pair of left and right support blocks has an apex portion at the intersection of the inclined support surface and the apex portion forming surface respectively formed in the substantially upper half portion and the substantially lower half portion of the opposing side surface. The pair of support blocks are arranged in a state where the respective vertex portions are opposed to each other at a predetermined interval along the horizontal direction, and the gap between the respective vertex portions serves as a drop port for a defective workpiece, While a workpiece of an electronic component having flange portions provided at both ends of the shaft portion is supported by the inclined support surfaces of the pair of support blocks and is oscillated and conveyed, the shaft portion of the workpiece is bent and one flange portion is bent. Is a device that removes defective workpieces in which both of the flange portions are partially missing, and the inclination angles of the inclined support surfaces of the pair of support blocks are the same, and the pair of support blocks Of each vertex of the support block The direction of the position are offset along the height direction, by position each apex portions of the pair of support blocks below the other flange portion of the defective workpiece one flange portion is missing , the defective work is suspended to the pair of support blocks, the spacing of the vertices of the pair of support blocks forming a chute of the defective workpiece, inserting the shaft portion the chute of the defective workpiece It is, by a change in the suspended posture, is characterized in that the defective workpiece is sized to be dropped from the drop port.

  In the invention of claim 4, the inclination angle of the inclined support surfaces of the pair of support blocks is the same, but the position in the height direction of each apex portion of the pair of support blocks is shifted along the height direction. Thus, the instability of the suspension posture of each of the first and second defective workpieces supported by the inclined support surfaces of the pair of support blocks is secured, and the instability of the suspension posture stabilizes During the transition to the suspension posture, the first flange and the second defective workpiece are each lost by losing support for the one inclined support surface of the remaining flange portion and passing the remaining flange portion through the drop port. Then, it is dropped from the dropping port and is selectively removed from the good work group.

According to the first aspect of the present invention, the inclination angles of the inclined support surfaces of the pair of support blocks are different from each other, and each of the pair of support blocks is below the other flange portion of the defective workpiece from which one flange portion is missing. Since the apex portion is located, the defective workpiece is suspended from the pair of support blocks, and the interval between the apexes of the pair of support blocks forming the falling port of the defective workpiece is determined by the interval between the defective workpieces. a shaft portion is inserted into the chute, a change in the suspended posture, by the defective workpiece is set to a dimension that can be dropped from the drop port, a is supported by the inclined support surfaces of the pair of support blocks In the middle of destabilizing the suspension posture of each of the first and second defective workpieces and shifting the defective workpiece supported in a suspended posture on each inclined support surface in an unstable state to a stable suspension posture, Angle of inclination By losing the support of the flange portion to the deal of the inclined support surface, a defective workpiece is dropped from the dropping port, and culling defective workpiece against good work group. In addition, by generating the first defective workpiece in which only one flange portion is missing, also with respect to the third defective workpiece consisting only of the flange portion alone generated reflectively, by the inclined support surfaces of the pair of support blocks, While being supported in an unstable posture inclined with respect to the horizontal and being oscillated and conveyed, it is dropped from the dropping port in the middle of shifting to a stable posture. As described above, according to the first aspect of the invention, it is possible to selectively remove defective workpieces having various shapes.

  According to the invention of claim 4, the inclination angle of the inclined support surfaces of the pair of support blocks is the same, but the position in the height direction of each vertex of the pair of support blocks is the height direction. The suspension postures of the first and second defective workpieces supported by the inclined support surfaces of the pair of support blocks are destabilized by shifting along the sway, and the suspension posture is destabilized. In the middle of the transition to a stable suspension posture, the first flange and the second flange portion lose their support with respect to the one inclined support surface of the remaining flange portion, and the remaining flange portion passes through the dropping port. Defective workpieces are dropped from the dropping port and sorted out from the good workpiece group.

Vibration culling device A ₁ of the defective workpiece of the present invention is a schematic plan view of a parts feeder embedded. FIG. 2 is an enlarged sectional view taken along line XX in FIG. 1. FIG. 3 is a partially enlarged view of a pair of support blocks V ₁ and V ₂ in FIG. ₂ . FIG. 4 is a partially enlarged view of a drop port H in FIG. 3. It is a cross-sectional view showing a state in which the good workpiece W ₁ is oscillated and conveyed in a state where the flange portions F ₁ are supported by the inclined support surfaces S ₁ and S ₂ of the pair of support blocks V ₁ and V ₂ . It is a cross-sectional view showing a state in which the first defective workpiece W ₁₁ supported by a suspended posture in each inclined support surfaces S _1, S ₂ of the pair of support blocks V _1, V ₂ is dropped from the drop port H. It is the same perspective view. The second defective workpiece W ₁₂ from dropping port H of the pair of support blocks V _1, V ₂ is a cross-sectional view showing a state to be dropped. Third defective workpiece W ₁₃ from dropping port H of the pair of support blocks V _1, V ₂ is a cross-sectional view showing a state to be dropped. (A), (b), (c) is a perspective view, a side view, and a front view of the good work W ₁ . Is a cross sectional view showing the defective workpiece W ₂₁ are culled. It is a perspective view similarly. It is a perspective view showing a state where the defective workpiece W ₃₁ are culled. It is a cross-sectional view of the vibration culling device A ₂ defective work. Defective workpiece W ₁₁ by vibration culling device A ₂ is a cross-sectional view showing a state that is culled. (A) ~ (d) is a front view of a defective workpiece _{W 11, W '11, W} 12, W 13.

  Hereinafter, the present invention will be described in more detail with reference to a plurality of examples.

First, with reference to FIG. 1 to FIG. 4, a vibration sorting / removing apparatus A ₁ for a defective workpiece according to the first embodiment will be described. FIG. 1 is a schematic plan view of a parts feeder incorporating a vibration sorting and removing apparatus A ₁ for defective workpieces according to the present invention, FIG. 2 is an enlarged sectional view taken along line XX of FIG. 1, and FIG. FIG. 4 is a partially enlarged view of a pair of support blocks V ₁ and V ₂ of FIG. ₂ , and FIG. 4 is a partially enlarged view of a drop port H of FIG. As shown in FIG. 1, the bowl 51 is a state in which countless good workpieces W ₁ and defective workpieces W _{11 to} W ₁₃ similar to each other are mixed (hereinafter, the countless workpieces in the state are referred to as “mixed workpiece group”). In this configuration, a spiral conveyance path 52 that conveys the mixed workpiece group from the center bottom of the bowl 51 to the upper peripheral edge is provided, and the conveyance end portion at the highest portion of the conveyance path 52 is mixed. An arc-shaped alignment track 53 for aligning the workpieces in a line is provided, and the alignment track 53 has a short track shape via the intermediate track 54. ₁ is arranged. The defective workpiece vibration sorting and removing apparatus A ₁ is connected to a straight general track 55 for continuously transporting the good workpiece W _{1 from} which the defective workpieces W _{11 to} W ₁₃ have been sorted and removed. ing.

The defective workpiece vibration sorting and removing apparatus A ₁ includes a pair of left and right support blocks V ₁ and V ₂ fixed to the horizontal upper surface of the base block 10 via bolts (not shown). The pair of support blocks V ₁ and V ₂ are defective workpieces W _{11 to} W ₁₃ in the middle of vibration conveyance while supporting the mixed workpiece group by the inclined support surfaces S ₁ and S ₂ formed on the inner surfaces facing each other. In this configuration, only the good work group is selected and dropped by dropping from the drop opening H formed between the support blocks V ₁ and V ₂ .

Of the inner surfaces facing each other of the pair of support blocks V ₁ and V ₂ , the good work W ₁ is held and vibrated and conveyed in cooperation with each other, and the defective work is in the middle of vibration and conveyance. Inclined support surfaces S ₁ and S ₂ for dropping W _{11 to} W ₁₃ from the dropping port H are formed. The inclination angles of the inclined support surfaces S ₁ and S ₂ with respect to the horizontal plane are θ ₁ and θ ₂ (θ ₁ > θ ₂ ), respectively, and are different from each other for reasons described later. In Example 1, θ ₁ = 60 ° and θ ₂ = 30 °. Accordingly, the angle formed by the two inclined support surfaces S ₁ and S ₂ is 90 °. Further, apex forming surfaces S ₃ and S ₄ are respectively formed on the inner surfaces of the pair of supporting blocks V ₁ and V ₂ which are opposite to each other and below the lower half, and the inclined supporting surfaces S ₁ (S ₂ ) and the apex portion forming surface S ₃ (S ₄ ) form apex portions P ₁ and P ₂ , respectively. Apex portion P ₁ of the support block V ₁ was, disposed slightly higher position than the top portion P ₂ of the support block V _2, has a height difference T between both the apex portion P _1, P _2, this The reason will be described later. The height difference T is (0.10 mm) when the length of one side of the square flange portion F ₁ of the good work W ₁ is (0.88 mm). In Example 1, in order to make it easy for the flange portion F ₁ of the defective workpiece W _{11 having} an unstable suspended posture to pass through the drop port H and to ensure that the defective workpiece W ₁₁ falls, a support block is used. The vertex forming surface S ₃ of V ₁ is parallel to the vertex forming surface S ₄ of the support block V ₂ .

The distance L ₁ of each vertex portions P _1, P ₂ of the pair of support blocks V _1, V ₂ is the respective inclined support surfaces S _1, S ₂ of the pair of support blocks V _1, V _2, unstable This is an interval for reliably dropping the defective workpieces W ₁₁ and W ₁₂ supported in a suspending posture, and the value determines whether or not the defective workpieces W ₁₁ and W ₁₂ are reliably dropped. That is, the distance L ₁ is that it requires greater than the minimum dimension part of the shaft portion K ₁ and defective work W ₁₂ of the defective workpiece W ₁₁ is passed through the flange portions F _1, which is missing the distance Even if L ₁ satisfies the condition larger than the minimum dimension, if the interval L ₁ is smaller than the required dimension, the defective workpiece W ₁₂ is dropped, but the defective workpiece W ₁₁ is unstable. While maintaining the suspended posture, it passes through the pair of support blocks V ₁ and V ₂ and cannot be removed. The gap L ₁ is a defective workpiece W ₁₁ having an unstable suspension posture in which the flange portion F ₁ is inclined with respect to the horizontal plane and the shaft portion K ′ _{1 that} has come out of the dropping port H is inclined with respect to the vertical direction. However, in the middle of the stable suspension posture in which the flange portion F ₁ is horizontal and the shaft portion K ′ ₁ is vertical due to both the conveyance vibration and the gravity action, the flange portion F ₁ It is necessary that the flange portion F ₁ has such a dimension that the flange portion F ₁ falls from the drop port H by losing the support on the inclined support surface S ₁ side. From this point of view, in Example 1, the distance L ₁ between the apex portions P ₁ and P ₂ is the case where the length of one side of the square flange portion F ₁ of the good workpiece W ₁ is (0.88 mm). (0.83 mm). The distance L _'1 along the horizontal direction of the apex P _1, P ₂ is (0.82 mm).

Further, an inclined support surface S ₂ of the support block V _2, the vertex forming surface S ₃ of the support block V ₁ was, have been formed parallel to as described above, the interval (L ₂₎ is (0. 50 mm). From the viewpoint of facilitating passage of the flange portion F ₁ of the defective workpiece W ₁₁ having an unstable suspension posture through the drop port H, the angle (θ ₂₎ of the vertex forming surface S ₃ of the support block V ₁ with respect to the horizontal plane. ) Is smaller than the same angle (θ ₂ ) of the inclined support surface S ₂ of the support block V ₂ , and when the flange portion F ₁ of the defective workpiece W ₁₁ tries to pass through the drop port H, the flange It is preferable to eliminate interference between the portion F ₁ and the apex portion forming surface S ₃ of the support block V ₁ .

Further, in the cross-sectional view of FIG. 4, it is formed by the intersection (Q) of the extended surfaces of the inclined support surfaces S ₁ and S ₂ of the pair of support blocks V ₁ and V ₂ and the apex portions P ₁ and P _2. When the virtual right triangle (P ₁ P ₂ Q) is considered, the hypotenuse length (L ₁ ) of the virtual right triangle (P ₁ P ₂ Q) is the length of the other two sides (L ₂ ). , (L ₃ ) (L ₁ > L ₂ , L ₁ > L ₃ ). For this reason, when the good work W ₁ is supported and oscillated and conveyed by the inclined support surfaces S ₁ and S ₂ of the pair of support blocks V ₁ and V ₂ , as shown in a part of FIGS. In addition, the shaft portion K ₁ is horizontal and each flange portion F ₁ is in a standing posture, and two adjacent two of the four substantially planar peripheral surfaces F ₁ a of each flange portion F ₁ are adjacent to each other. The peripheral surface F ₁ a is oscillated and conveyed while being supported by the inclined support surfaces S ₁ and S ₂ . Here, the hypothetical right triangle (P ₁ P ₂ Q) in which the length of the hypotenuse (L ₁ ) is slightly shorter than the length (Lf ₁ ) of one side of the square flange portion F ₁ of the good workpiece W _1. , The lengths (L ₂ ) and (L ₃ ) of two sides excluding the hypotenuse of the virtual right triangle (P ₁ P ₂ Q) from the length (Lf ₁ ) of one side of the flange F ₁ each dimensional difference obtained by subtracting is much greater than the negligible difference obtained by subtracting the length of the hypotenuse of a virtual right-angled triangle _{(P 1 P 2 Q) (} L 1) from the length of one side of the flange portion F ₁ (Lf ₁₎ Therefore, the good work W ₁ is oscillated and conveyed in a stable posture having a sufficient contact area with respect to the inclined support surfaces S ₁ and S ₂ while maintaining the posture in which the shaft portion K ₁ is leveled.

Next, the defective workpiece removal conveyance path C (see FIG. 1) in which defective workpieces W _{11 to} W ₁₃ having various shapes are formed by the inclined support surfaces S ₁ and S ₂ of the pair of support blocks V ₁ and V ₂ . in the course of the vibration conveyor, is described to be culled against falling has been yo workpiece from dropping opening H in each defective workpiece W ₁₁ to _W-13. Here, as a defective work, it is broken in the middle of the shaft portion K ₁ and one flange portion F ₁ is missing, so that only the other flange portion F ₁ remains in the broken shaft portion K ′ _1. and defective work W ₁₁ that is formed, W _'11, the shaft portion K ₁ is left as it is, the flange portions F of both ends' ₁ are both second defective workpiece W ₁₂ and part of which is missing It is roughly divided into three types, that is, a third defective work W ₁₃ consisting only of a single flange portion F ₁ which is generated in a reflective manner by the generation of the first defective work W ₁₁ . The difference between the defective workpiece W ₁₁ and the same W ′ ₁₁ is only the length of the remaining shaft portion K ′ ₁ , and there is no other shape difference. Then, what culling is most difficult is the first defective workpiece W _11.

Then, in the middle of the pair of support blocks V _1, each inclined support surface of the V ₂ S _1, S ₂ of the bottom of the defective workpiece removal conveying path C formed in a V-shape to the first defective workpiece W ₁₁ passes a description of the operation of the first defective workpiece W ₁₁ is culled. The inclination angles θ ₁ (= 60 °) and θ ₂ (= 30 °) of the inclined support surfaces S ₁ and S ₂ of the pair of support blocks V ₁ and V ₂ are different, and (θ ₁ > θ ₂ ). For this reason, even if the heights of the apex portions P ₁ and P ₂ of the pair of support blocks V ₁ and V ₂ are the same, the shaft portion K ′ ₁ of the defective workpiece W ₁₁ is dropped into the drop port H during the conveyance. by exiting from the when a defective workpiece W ₁₁ becomes suspended position, as shown in the overall two-dot chain line and 7 in FIG. 6, a pair of the inclined support block V _1, V ₂ The flange portion F ₁ of the defective workpiece W ₁₁ supported by the support surfaces S ₁ and S ₂ has the other inclined support on the side supported by the inclined support surface S ₁ of the support block V _{1 having} a large inclination angle (θ ₁ ). The shaft portion K ′ _{1 that} is higher than the side supported by the surface S ₂ and is inclined with respect to the horizontal plane and exits from the dropping port H is inclined with respect to the vertical. Therefore, defective workpiece W ₁₁ of the suspension position is a stable posture, the way both transport vibration and gravity effects synergistically, mainly shank K _'1 tends to become vertically, i.e., In the middle of trying to be in a stable suspension posture, the shaft portion K ′ ₁ is inclined from the vertical position to the opposite inclination posture from the initial position due to inertia, thereby supporting a large inclination angle (θ ₁ ) in the flange portion F ₁ . losing support for inclined support surface S ₁ of the block V _1, the flange portion F ₁ passes through the drop port H, and the entire first defective work W ₁₁ passes through the fall opening H, good workpiece W _{1 is} sorted out.

While the first defective workpiece W ₁₁ is vibrated conveyed on the conveying path C defective workpiece removed, the theory, a pair of support blocks V ₁ of the first defective workpiece W ₁₁ is culled been dropped from the dropping port H , in a case where each apex portion P _1, P ₂ of V ₂ is assumed to be located in positions of the same height, even under this assumption, it can be sorted removing the first defective workpiece W ₁₁ is It is clear from the above description.

In the first embodiment, in addition to the configuration in which the tilt angles θ ₁ and θ ₂ of the tilted support surfaces S ₁ and S ₂ of the pair of support blocks V ₁ and V ₂ are different from each other, the tilt angle (θ ₂ ) is further small. the height position of the vertex portion P ₂ of the support block V ₂ having an inclined support surface S ₂ is added configuration which is slightly lower than the height position of the top portion P ₁ of the other support block V ₁ Yes. The effect produced from the latter configuration in which the height positions of the vertex portions P ₁ and P ₂ are slightly different is that each of the inclined support surfaces S ₁ and S ₂ of the pair of support blocks V ₁ and V ₂ described above. The above-described “first unstable work W ₁₁ having an unstable suspension posture caused by the difference in the inclination angles θ ₁ and θ ₂ has the most stable suspension posture due to inertia when trying to assume a stable suspension posture. beyond, in the middle of the shaft portion K _'1 are inclined in opposite directions, by losing the inclination angle (theta ₁₎ is inclined support of the support surface S ₁ of the large side of the flange portion F _1, the flange portion F ₁ There passes through the drop port H, acts first defective workpiece W ₁₁ is dropped "is to become conspicuous. That is, the apex portion P ₂ of the support block V ₂ having the inclined support surface S ₂ having a small inclination angle (θ ₂ ) is disposed at a position slightly lower than the apex portion P _{1 of the} other support block V _1. Accordingly, the inclination angle relative to the vertical axis portion K _'1 in suspended position of the defective workpiece W ₁₁ is increased, in order to "instability" of the suspension attitude further enhanced, even the culling defective workpiece W ₁₁ It becomes easy.

Next, referring to FIGS. 8 and 9, the second and third defective workpieces W ₁₂ and W ₁₃ are sorted in the defective workpiece removal conveyance path C formed by the pair of support blocks V ₁ and V _2. The effect | action removed is demonstrated easily. Regarding the second defective workpiece W ₁₂ , since each of the flange portions F ′ ₁ at both ends of the shaft portion K ₁ is partially missing, each of the flange portions F ′ ₁ There is a portion shorter than the distance (L ₁ ) between the apexes P ₁ and P ₂ of the pair of support blocks V ₁ and V ₂ . Accordingly, as shown in FIG. 8, or would fall as it passes through the chute H, or by the state of the flange portion F _'1 of the segmental defect, as in the first defective workpiece W ₁₁ described above, the temporary Although it may be in a suspended posture, the “suspending” of the flange portion F ′ ₁ related to the partial defect supported by the inclined support surfaces S ₁ and S ₂ of the pair of support blocks V ₁ and V ₂ The “support stability of the posture” is overwhelmingly lower than that of the first defective workpiece W ₁₁ having the complete flange portion F _1, and therefore the first defective workpiece W _{11 is} caused by the synergistic effect of the conveyance vibration and the gravity action. More quickly or within a shorter time than the drop port H, the material is sorted and removed.

Regarding the third defective workpiece W ₁₃ comprising only a single flange portion F _1, the inclined support surface S ₁ of the external or internal surface F ₁ b of the flange portion F ₁ is a pair support block V _1, V _2, S _In the case where it is arranged in contact with any _{one of} the _two , it is slid along the inclined support surfaces S ₁ and S ₂ and sorted out. In addition, when supported across the inclined support surfaces S ₁ and S ₂ as in the case of the first defective workpiece W ₁₁ , either the outer surface or the inner surface F ₁ b is supported by the inclined due to the conveyance vibration. After coming into contact with _{one of} the surfaces S ₁ and S ₂ , it slides down from the drop opening H.

Further, in the above-described defective workpiece vibration sorting and removing apparatus A ₁ , the defective workpieces W _{11 to} W _{13 of} the workpiece W ₁ in which the square flange portions F ₁ are integrally formed at both ends of the circular section K _1. It is possible to sort and remove the workpieces W ₂ and W ₃ of electronic parts having other shapes. Workpiece W _2, as shown in FIGS. 11 and 12, at both ends of the rectangular cross section of the shaft portion K _2, the flange portion F ₂ large rectangular than the shaft portion K ₂ are formed integrally Shape. When the defective workpiece W ₂₁ of the workpiece W ₂ is selected and removed, the distance (L ₁ ) between the apexes P ₁ and P ₂ of the pair of support blocks V ₁ and V ₂ is the rectangular flange of the workpiece W _2. point parts is that necessary to slightly less than the length of the short side of the F ₂ is different from the workpiece W ₁ having a square-shaped flange portion F _1. That is, in the case of a defective workpiece W ₂₁ workpiece W ₂ is in the state in which the long side portion of the flange portion F ₂ is supported by the inclined support surfaces S _1, S _2, in that not dropped from the drop port H, Although removal and selection is more difficult than the work W ₁ , when the short side portion of the flange portion F ₂ is supported in a suspended posture by the inclined support surfaces S ₁ and S ₂ in the course of vibration conveyance, In the same manner as the above-described action of selecting and removing the workpiece W ₁ , the flange portion F ₂ whose short side portion is oriented in a direction perpendicular to the vibration conveyance direction R (see FIG. 7) is dropped from the dropping port H, defective workpiece W ₂₁ are culled. FIG. 12 also shows a state in which the good workpiece W ₂ is oscillated and conveyed in addition to the action of dropping the defective workpiece W ₂₁ .

In addition, as shown in FIG. 13, the workpiece W ₃ is formed with a square flange portion F ₃ having a long side of the shaft portion K ₃ as one side at both ends of the shaft portion K _{3 having} a rectangular cross section. Shape. Defective workpiece W ₃₁ of the workpiece W ₃ being in a state in which the long sides of the shaft portion K ₃ is oriented in the conveying direction R only, in that is dropped the defective workpiece W ₃₁ from chute H, is culling limit applied, but in the course of being conveyed by the defective workpiece removal conveying path C, since the orientation of the defective workpiece W ₃₁ is changed by the transfer vibration, removal of the defective workpiece W ₃₁ becomes possible. Incidentally, in FIG. 13 is shown also to transport state of good work W _3.

In the vibration culling device A ₁ of the defective workpiece Example 1, the inclined angle theta ₁ of the inclined support surfaces S _1, S ₂ of the pair of support blocks V _1, V _2, theta ₂ are respectively 60 ° 30 °, and the greater the angle difference between the inclined angles θ ₁ and θ ₂ of the inclined support surfaces S ₁ and S ₂ , the greater the “instability” of the suspended posture of the defective workpiece. However, in the invention of claim ₁ , it is necessary that there is a difference between the inclination angles θ ₁ and θ ₂ of the inclined support surfaces S ₁ and S ₂ , and the specific inclination angles θ ₁ and θ ₂ are as follows. Of course, the present invention is not limited to that of the first embodiment, and can be appropriately determined based on the shape of the defective workpiece.

Further, regarding the height difference (T) between the apex portions P ₁ and P ₂ of the pair of support blocks V ₁ and V ₂ , the length of one side of the flange portions F _{1 to} F ₃ of the workpieces W _{1 to} W ₃ ( The flange portion F _{1 of} the workpieces W _{1 to} W ₃ supported in a suspended posture by the left and right inclined support surfaces S ₁ and S ₂ even if the amount is small, such as 1/5 to 1/15). It increases the inclination angle of the to F _3, the destabilizing the suspension position, is sufficient, with regard to the specific value of the height difference (T), appropriately selected in accordance with the shape of the workpiece to be culling That's fine.

Vibration culling device A ₂ bad work of the second embodiment, as shown in FIGS. 14 and 15, a pair of left and right supporting blocks V _'1, V' ₂ of the inclined support surface S _'1, S' ₂ This is a case where each inclination angle is 45 ° and is the same. Even if the inclination angles of the inclined support surfaces S ′ ₁ and S ′ ₂ are the same, the height difference (T) is given to each vertex P ′ ₁ and P ′ ₂ of the pair of support blocks V ′ ₁ and V ′ _2. By providing, the flange portions F _{1 to} F ₃ of the defective workpieces W ₁₁ , W ₂₁ , W ₃₁ supported in a suspended posture by the inclined support surfaces S ′ ₁ , S ′ ₂ can be inclined, so that the above theory Thus, the defective workpieces W ₁₁ , W ₂₁ and W ₃₁ can be selected and removed. Since the height difference (T) is made larger than that of the vibration sorting and removing apparatus A _{1 of the} first embodiment, the flange portions F _{1 to} F ₃ of the defective workpieces W ₁₁ , W ₂₁ and W ₃₁ can be inclined. Thus, the sorting and removing action of the defective workpiece equivalent to that of the vibration sorting and removing apparatus A _{1 of the} first embodiment is achieved. In FIG. 14 and FIG. 15, the same or equivalent parts as those of the vibration sorting and removing apparatus A _{1 of the} first embodiment are denoted by “′”.

  In the above embodiment, the shape of the flange portion of the workpiece to be sorted is a square shape, but even a workpiece having circular flange portions at both ends can be similarly removed.

A ₁ and A ₂ : Vibration sorting and removing device for defective workpieces
C: Defective workpiece removal conveyance path
F _{1 to} F ₃ : Workpiece flange
H: Drop port
K _{1 to} K ₃ : Shaft part of workpiece
L ₁ : the distance between the apexes of the pair of support blocks
P ₁ , P ′ ₁ , P ₂ , P ′ ₂ : Vertex
R: Vibration transfer direction
S ₁ , S ′ ₁ , S ₂ , S ′ ₂ : inclined support surface
V ₁ , V ₂ : Support block
W ₁ to _W-3: workpiece _{W 11, W 12, W 13} , W 21, W 31: defective workpiece
θ ₁ : Inclination angle of the inclined support surface S ₁
θ ₂ : Inclination angle of the inclined support surface S ₂

Claims (4)

The pair of left and right support blocks has an apex at the intersection of the inclined support surface and the apex forming surface formed in the substantially upper half and the substantially lower half of the opposing side surface, and the pair of support blocks is In addition, the respective vertex portions are arranged in a state of facing each other at a predetermined interval along the horizontal direction, and the gap between each vertex portion serves as a drop opening for a defective workpiece,
While a workpiece of an electronic component having flange portions provided at both ends of the shaft portion is supported by the inclined support surfaces of the pair of support blocks and is oscillated and conveyed, the shaft portion of the workpiece is bent and one flange portion is bent. Is a device for removing and removing defective workpieces such as those in which both flanges are partially missing, during transportation,
The inclination angles of the inclined support surfaces of the pair of support blocks are different from each other,
By positioning each apex portion of the pair of support blocks below the other flange portion of the defective workpiece from which one flange portion is missing, the defective workpiece is suspended by the pair of support blocks,
Interval between the apex of the pair of support blocks forming a chute of the defective workpiece, the defective shaft portion of the workpiece is inserted into the chute, the change of the suspension position, the defective workpiece fall A vibration sorting and removing device for defective workpieces, characterized in that it is dimensioned to drop from the mouth.   The position in the height direction of each apex portion of the pair of support blocks is shifted along the height direction so that the apex portion of the support block having an inclined support surface with a small inclination angle is lowered. The vibration sorting and removing apparatus for defective workpieces according to claim 1.   The amount of shift in the height direction of each apex portion of the pair of support blocks is (1/5 to 1/15) of the length of one side of the flange portion of the workpiece. Vibration sorting and removal device for defective workpieces. The pair of left and right support blocks has an apex at the intersection of the inclined support surface and the apex forming surface formed in the substantially upper half and the substantially lower half of the opposing side surface, and the pair of support blocks is In addition, the respective vertex portions are arranged in a state of facing each other at a predetermined interval along the horizontal direction, and the gap between each vertex portion serves as a drop opening for a defective workpiece,
While a workpiece of an electronic component having flange portions provided at both ends of the shaft portion is supported by the inclined support surfaces of the pair of support blocks and is oscillated and conveyed, the shaft portion of the workpiece is bent and one flange portion is bent. Is a device that removes defective workpieces that are missing or both of the flanges are partially missing,
The inclination angle of each inclined support surface of the pair of support blocks is the same, and the position in the height direction of each vertex portion of the pair of support blocks is shifted along the height direction,
By positioning each apex portion of the pair of support blocks below the other flange portion of the defective workpiece from which one flange portion is missing, the defective workpiece is suspended by the pair of support blocks,
Interval between the apex of the pair of support blocks forming a chute of the defective workpiece, the defective shaft portion of the workpiece is inserted into the chute, the change of the suspension position, the defective workpiece fall A vibration sorting and removing device for defective workpieces, characterized in that it is dimensioned to drop from the mouth.

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