JP2009204442A - Weighing device for particulate matter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To weigh a particulate matter by rotating a weighing apparatus reciprocally as much as 90 degrees, by tilting a channel in the weighing apparatus. <P>SOLUTION: The weighing apparatus 1 comprises a storage part 2 for storing the particulate matter and a weighing part 3 for weighing it. The weighing part has a weighing cavity 18 for weighing the particulate matter, a temporary storage cavity 20 for storing temporarily the weighed particulate matter, and the channel for connecting them. An angle difference between the weighing cavity and the temporary storage cavity is set at 90 degrees. First of all, the weighing apparatus is rotated to the right side as much as 90 degrees, to thereby move the particulate matter filled in the weighing cavity in the waiting state into the temporary storage cavity. The particulate matter in the temporary storage cavity shows the measured quantity. Then, the weighing apparatus is rotated to the left side as much as 90 degrees, to thereby perform discharge of the particulate matter in the temporary storage cavity and filling of the particulate matter into the weighing cavity. This operation is repeated in the weighing operation. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a granular material measuring apparatus that measures and supplies quantitatively a granular material.

  For example, Japanese Patent Application Laid-Open No. 9-306919 and Japanese Patent Application Laid-Open No. 2006-175471 disclose a measuring device that measures a granular material by rotating a measuring device.

However, the conventional technology rotates the measuring instrument about 180 degrees in order to measure and discharge the particulate matter, so that the space required for the rotation of the measuring instrument becomes large, the disadvantage that the time required for the rotation is long, and the weighing There are a drawback that it is difficult to prevent the particulate matter discharged from the outlet of the apparatus from escaping, a disadvantage that dust easily enters from the surroundings, and a disadvantage that the particulate matter is subject to surface alteration and cracking due to the rotation of the measuring instrument. In addition, since the conventional measuring device is not provided with a particulate matter remaining amount detection device, there is a drawback that it is easy to make mistakes that continue work even if there is no particulate matter, and particulate matter that stays in the reservoir for a long time occurs. There are drawbacks.
Japanese Patent Laid-Open No. 9-306919 JP 2006-175471 A

  The problem to be solved is to improve the conventional drawbacks described above, and the first problem is to reduce the rotation angle of the measuring instrument. Other problems include measuring the particulate material without escaping it, ensuring that dust and dirt from the surroundings are not mixed into the measured particulate material, measuring the particulate material without damaging it, The remaining amount is automatically detected with high accuracy and immediately before the remaining amount becomes zero.

The present invention has a measuring device including a storage unit for storing particulate matter and a measuring unit for measuring particulate matter, and a driving device that rotates the measuring unit to measure the particulate matter, and the measuring unit is connected to the storage unit. A metering device having an inlet, a metering cavity for metering the particulate material, a temporary storage cavity for temporarily storing the metered particulate material, and an outlet, wherein the inlet for receiving the particulate material from the reservoir into the metering unit is vertically downward The first flow path is connected to the second flow path extending obliquely downward, the second flow path is connected to the third flow path extending vertically downward, and the third flow is connected. The path is connected to the fourth flow path, which is a measuring cavity extending in the horizontal direction, the measuring cavity is connected to the fifth flow path extending obliquely upward, and the fifth flow path is a temporary storage cavity extending vertically downward. Connected to a sixth channel The temporary storage cavity is connected to the seventh flow path extending obliquely downward, the seventh flow path is connected to the eighth flow path extending vertically downward, and the eighth flow path is a measured granular It is connected to an outlet for discharging the substance.

In addition, the present invention has a measuring device comprising a storage unit for storing the particulate material and a measuring unit for measuring the particulate material, and a driving device for rotating the measuring unit to measure the particulate material. A metering device having a metering cavity for metering granular material, a temporary storage cavity for temporarily storing metered granular material, and an outlet, wherein the direction of the metering cavity and the direction of the temporary storage cavity are approximately 90 degrees It is characterized by making an angle of

Furthermore, the present invention has a measuring device comprising a storage unit for storing the particulate material and a measuring unit provided with a flow path for measuring the particulate material, and a driving device for rotating the measuring unit. A metering device comprising a particulate material inlet, a metering cavity for metering the particulate material, a temporary storage cavity for temporarily storing the metered particulate material, an outlet for discharging the metered particulate material, and a flow path connecting them. A substance remaining amount detection unit is disposed between the inlet and the measurement cavity.

  In the granular material measuring device of the present invention, since the angle formed between the measuring cavity and the temporary storage cavity is about 90 degrees, the granular material can be measured at a small rotation angle of about 90 degrees. There are advantages in that the required space can be reduced, the time required for rotation can be shortened, and the damage of the solder balls due to the collision between the solder balls in the storage part and the collision between the solder balls and the container inner wall accompanying the rotation can be reduced.

Furthermore, the particulate matter weighing device of the present invention is provided with a remaining amount detection unit between the particulate matter inlet of the weighing unit and the weighing cavity, so that the remaining amount of the particulate matter can be detected accurately and at an appropriate time. There is an advantage that the replacement can be performed in a state where the remaining amount of the particulate matter is extremely small without failing to replace the part or replenish the particulate matter to the storage part.

  The purpose of providing a weighing device with a small rotation angle for weighing has been realized by improving the flow path of the weighing unit. In addition, a structure that does not dissipate the measured granular material and a structure that does not allow dust from the surroundings to enter the measured granular material have been realized. Furthermore, by providing an optical sensor in a part of the flow path of the measuring unit, it is possible to detect in a state where the remaining amount of the particulate matter is reduced.

In the present invention, the granular material is a spherical shape such as a solder ball, a metal ball, a plastic ball, a ceramic ball or a drug ball, or an amorphous shape thereof. It refers to a substance with a large nature.
The direction of the solder ball flow includes a forward direction and a reverse direction. The forward flow is the flow from the inlet 11 to the outlet 12 in FIG. 1, and the reverse flow is from the outlet 12 to the inlet 11. Define as flow.
The vertical direction refers to the vertical direction in FIG. 3, and the horizontal direction refers to a direction that intersects the vertical direction at a right angle. The downward direction refers to the downward direction in FIG. 3, and the upward direction refers to the upward direction in FIG. The diagonally downward direction refers to a direction below horizontal in FIG. 3, and the diagonally upward direction refers to a direction above horizontal.

The flow path will be described below.
1 and 2 show an embodiment of a measuring instrument 1 according to the present invention. FIG. 1 is a side view of the measuring instrument 1, and FIG. 2 is a front view. The measuring instrument 1 includes a storage unit 2 that stores solder balls and a measuring unit 3 that measures solder balls. The storage unit 2 includes a container 4 that stores solder balls, and a lid 5 that is provided with an attachment unit for attaching the container 4 to the measuring unit 3, and solder balls 23 are stored therein. And the lid | cover 5 is connected with the measurement part 3 by the inlet attachment member 11 so that attachment or detachment is possible. The capacity of the container 4 is 120 cc.

  The measuring unit 3 is composed of two plates 8 (8a, 8b) overlapped, and four corners are fixed with screws, and two positioning pins 7 and a hole are provided in order to increase the overlay position accuracy. It has been. The one hole is a long hole in the horizontal direction. An inlet attachment member 11 is attached to the inlet 10 of the measuring unit 3, and an outlet attachment member 13 is attached to the outlet 12. The lid of the container for sale / conveyance is replaced with a dedicated lid 5 to which the inlet mounting member 11 is attached.

The flow paths (15, 16, 17, 18, 19, 20, 21, 22) through which the solder balls pass are salicided on at least one plate 8a. The dimensions of the plate 8 are 40 × 40 mm and the thickness is 5 mm. The inlet mounting member 11 connected to the reservoir 2 is screwed to the first flow path 15 with a screw.

The first flow path 15 is a cylindrical flow path having a large cross-sectional area that is easy for solder balls to pass through, a rectangular remaining amount detection cavity 14 that detects the presence or absence of the remaining amount of solder balls, and connects the cavity and the second flow path. It consists of a flat channel with a small cross-sectional area. The cylindrical channel and the rectangular channel are processed into both plates 8a and 8b (see FIG. 11).

The detection of the presence or absence of solder balls remaining in the storage unit 2 is performed when the light receiving element detects the light from the optical sensor 35 by the solder balls flowing into the remaining amount detection cavity 14 from the storage unit 2. Since the solder balls are not sufficient in a single row, for example, the shape of the remaining amount detection cavity is increased in height and width so that it overlaps several times. When the plate 8 is made of an opaque material such as aluminum, the remaining amount detection cavity 14 is provided with a solder ball remaining amount detection window 14a as a transparent plate. The residual detection window 14a is provided on both the plates 8a and 8b. The optical sensor 35 is disposed such that the light emitting element and the light receiving element are spaced apart from each other with the residual detection window 14a interposed therebetween.

In the measuring instrument 1 in the standby state (FIGS. 3 and 6), the inlet 10 is on the upper side, the outlet 12 is on the lower side, and the first flow path 15 extends vertically downward.

The cross section of the inlet 10 is designed to be as large as 6 mm in diameter so that the solder balls 23 flow well when the measuring instrument 1 rotates and do not suspend the gutter. The upper part of the first flow path 15 is cylindrical and connected to the rectangular residual detection cavity 14. Further, the lower portion of the first flow path 15 has the same cross section (width 2 × depth 1 mm) as the second flow path so that the solder balls do not suspend and stay.

The second flow path 16 is processed in a direction inclined obliquely downward (45 degrees) with respect to the first flow path. The cross-section of the second flow path 16 is such that the solder balls do not stay at the connection portion between the first flow path and the third flow path and do not stay in the second flow path. The lower part of the path 15 is the same as the third flow path, and the connecting portion is chamfered.

The third flow path 17 extends in the vertical direction and has a small cross-sectional area so that the flow of the solder balls 23 can be regulated. Furthermore, the length of the flow path is also shortened. Depending on the right rotation speed and the like of the measuring instrument 1, the solder balls filled in the third flow path 17 return to the second flow path 16, remain solder balls, and the fourth flow path (measurement cavity) 18. Since it is divided into those that flow to

The measurement cavity 18 which is the fourth flow path 18 is processed in a horizontal direction in a main region for measurement, and has a small cross-sectional area so as to improve measurement accuracy. The measuring cavity 18 has a third channel 17, a fifth channel 19, and a boundary portion. The volume measured by the measuring cavity 18 is approximately within this boundary, but varies depending on conditions (ball diameter, surface state, flow path shape, surface state, rotational speed, etc.). The measuring instrument of the present invention employs a measuring method in which a solder ball is filled in a part (metering space) of a continuous space (flow path) and the solder ball filled in the measuring space is taken out. Therefore, the quantity of solder balls to be weighed is affected by the flow paths before and after, so it is difficult to be the same as the quantity filled in the weighing space. There are cases where the solder balls filled in the measurement space flow out to other spaces adjacent to the measurement space and flow from other spaces. As described above, the measuring device of the present invention varies the amount to be measured depending on the flow path, the rotation angle, and the rotation speed even if the same solder ball is measured. There are special features.

The fifth channel 19 is disposed so as to be inclined obliquely upward (45 degrees). The cross section of the fifth flow path is made small so that the protrusion from the measurement cavity 18 is small, and the cross section of the fifth flow path is the same as the cross section of the measurement cavity so that the solder balls do not stay. The cross-sectional area is reduced to 2 × 1 mm so that it can be regulated. When the measuring instrument 3 is vertical and the measuring cavity 18 is filled with the solder balls 23, the amount of the solder balls pushed out to the fifth flow path 19 becomes larger when this cross-sectional area is larger.

The sixth flow path 20 (temporary storage cavity) is arranged in the vertical direction so as to be horizontal when the measuring instrument 1 is rotated 90 degrees to the right. When the measuring instrument rotates 90 degrees to the right, the cross-sectional area is increased to a width of 4 × depth of 1 mm so that the solder balls can easily flow in a space for temporarily storing the measured solder balls. The temporarily stored solder balls flow out to the seventh flow path 21 in the process in which the measuring instrument rotates 90 degrees counterclockwise and returns to the standby state. When the measuring instrument 1 is rotated to the right, the fifth and seventh flow paths have a predetermined angle so that the solder balls easily enter the fifth flow path 19 and do not flow out to the seventh flow path 21. It is arranged. Further, when the measuring instrument is turned 90 degrees counterclockwise to be in a standby state, the solder ball does not enter from the fifth flow path and the solder ball in the temporary storage cavity is sent to the seventh flow path without remaining. It is designed including the relationship with the flow path.

The seventh flow path 21 is processed by inclining 45 degrees obliquely downward with respect to the sixth flow path 20 so that the solder balls stored in the temporary storage cavity 20 do not move in the forward direction with a slight rotation. The cross-sectional area is designed to be large so that the ball can easily flow. Note that there are two directions inclined 45 degrees with respect to the sixth flow path 20, but the seventh flow path is directed upward when the measuring unit 3 is inclined 90 degrees to the right. Moreover, this flow path may play a part of the role of the space for temporarily storing the measured solder balls.

The eighth flow path 22 is a flow path connected to the outlet mounting member 13 and is designed to have a large cross-sectional area so that the solder balls can easily flow. The lower end of the eighth flow path 22 is the outlet 12. An outlet attachment member 13 is attached to the outlet 12. The outlet mounting member 13 is connected to the guide pipe 40. The guide pipe 40 is configured so that the solder balls 23 weighed and supplied from the outlet 12 do not escape. Further, it is prevented from mixing with dust in the atmosphere, or fresh air does not contact the solder balls.

FIG. 11 is a perspective view of the measuring instrument 1 and is shown upside down, excluding the solder balls, for easy understanding. The cross section of the inlet 10 and the outlet 12 is circular, and the residual detection cavity 14 is square and straddles the plates 8a and 8b. Other flow paths are formed in the plate 8a.

The fifth flow path 19 illustrated in FIG. 1 is provided in a diagonally upward direction, and the seventh flow path 21 is provided in a diagonally downward direction in parallel. Their angle is 45 degrees upward or downward with respect to the horizontal.

Hereinafter, the rotation mechanism of the measuring instrument 1 will be described.
3 to 5 are side views of an embodiment in which the granular material measuring device 39 according to the present invention is applied to a ball transfer device, and shows three types of inclination states of the measuring device 1 respectively. 3 shows a state in which the measuring instrument 1 is vertically upward, FIG. 4 shows a state in which the measuring instrument 1 has been rotated 45 degrees to the right, and FIG. 5 shows that the measuring instrument 1 has been rotated 90 degrees in the right direction. This shows the state.
Note that the movement of the measuring instrument 1 is not a simple circular motion, but a rotation that combines a circular motion and a vertical linear motion. Furthermore, in these drawings, in the ball transfer operation state in which the ball transfer head 25 is pressed against the substrate 41, it is difficult to display the solder balls 23 supplied onto the substrate 41. Therefore, the standby state (for example, transfer of solder balls is performed). In this state, the metering supply device 39 is moved to a predetermined position). In addition, when transferring the solder ball, the weighing device lowers the jig mounting plate 43 disposed so as to be movable up and down by a slider (not shown) and appropriately contacts the ball transfer head 25 with the substrate 41. And rotate and move horizontally while holding the solder balls on the board.

FIG. 3 shows a standby state before or after solder balls are supplied. The measuring instrument 1 is disposed above the ball transfer head 25 and is connected to the ball transfer head 25 via a guide pipe 26. The measuring device 39 has a drive mechanism that rotates while the measuring instrument 1 moves up and down as the piston rod 28 of the air cylinder 27 moves up and down. A vertical movement plate 29 is fixed to the upper end of the piston rod 28, and the vertical movement plate 29 is guided by a slider 36 and can move up and down. The lid 5 of the measuring instrument 1 is attached to the rotating plate 31. The rotating plate 31 is connected to the up-and-down moving plate 29 via the rotating shaft 30 so as to be rotatable. The pin guide plate 33 is fixed to the jig mounting plate 43 together with the air cylinder 27, the optical sensor 35, and the motor 37 for rotating the ball transfer head 25. The pin 32 provided below the rotary plate 31 is a long hole provided in the pin guide plate 33 so that the rotary plate 30 rotates about the rotary shaft 31 as the vertical movement plate 29 moves up and down. 34 is moved horizontally. The rotary shaft 30 only moves up and down together with the vertical movement plate 29 and does not move horizontally.

When the cylinder rod 28 is lowered, the vertical movement plate 29 is lowered together, the rotary shaft 30 that is rotatably connected to the vertical movement plate 29 is rotated while being lowered, and the pin 32 is moved to the left along the long hole 34. The measuring instrument 1 rotates to the right. On the contrary, when the cylinder rod 28 rises, the measuring instrument 1 rotates counterclockwise.

When the cylinder rod 28 descends, the measuring instrument 1 rotates while descending. However, since the lower end of the guide pipe 26 is fixed, the guide pipe 26 is curved by absorbing the change in the distance of the descending portion. The pipe guide plate 24 regulates the guide pipe 26 so as not to meander.

In FIG. 4, the rotary shaft 30 is lowered as the piston rod 28 and the vertical movement plate 29 are lowered, thereby causing the pin 32 to move to the left and the rotation plate 31 to rotate around the rotary shaft 30 at the same time. The state in which the measuring instrument 1 is rotated 45 degrees clockwise is shown. That is, FIG. 4 shows a state rotated 45 degrees from FIG. In addition, the state of the ball in the measuring instrument 1 corresponds to FIG.

FIG. 5 shows a state where the piston rod 28 is lowered and the measuring instrument 1 is rotated 90 degrees to the right. In this process, the measuring instrument 1 measures the solder ball and temporarily stores it in the temporary storage cavity 20.

By driving the piston rod 28 in the state of FIG. 5 upward, the measuring instrument 1 rotates 45 degrees counterclockwise to FIG. 4 and then rotates 90 degrees counterclockwise to the state of FIG. In this process, the solder balls 23 are supplied onto the substrate 41. As described above, the measuring instrument 1 of the present invention can reciprocate between vertical and horizontal by the air cylinder 27 so as to measure the solder ball in the forward path and supply the solder ball measured in the backward path. It has become. In addition, the state of the ball in the measuring instrument 1 corresponds to FIG.

Next, the process of measuring and supplying the solder balls 23 by rotation will be described.
6 to 10 are views showing the rotation state of the measuring instrument 1 and the distribution state of the solder balls in the measuring instrument. In the embodiment, a solder ball having a diameter of 80 μm is used, but since it is too small to be displayed, it is shown relatively large, so that it does not correspond to the scale of a measuring instrument or the like. The diameter of the solder ball is preferably 1 to 500 μm. When it is less than 1 μm, it becomes powdery and it becomes difficult to measure.

FIG. 6 shows a standby state before or after solder balls are supplied. The solder ball 23 of the storage unit 2 fills the flow path from the inlet 10 to the measuring cavity 18 and flows to the lower end of the fifth flow path 19 and is generated between the solder balls and between the solder ball and the flow path side wall. It is stopped by the friction force. Since the fifth flow path 19 has a small cross-sectional area, the solder balls 23 do not flow into the flow path in large quantities. Since the fifth flow path 19 faces obliquely upward by 45 degrees from the horizontal fourth flow path 18, the solder ball 23 hardly moves due to frictional force when the rotation angle is about −30 degrees, for example.

FIG. 7 shows a state in which the measuring instrument 1 is rotated 45 degrees to the right from the state of FIG.
Since the fifth flow path 19 is disposed obliquely upward at an angle of 45 degrees, when the rotation angle exceeds 45 degrees, the solder balls in the measurement cavity 18 are, for example, such that the solder balls roll on a slope. The solder balls in the third flow path 17 roll out to the fifth flow path 19 and move to the space in which the measurement cavity 18 is vacant. On the other hand, the solder ball 23 can move from the second flow path 16 to the third flow path 17 because the inclination of the second flow path 16 becomes horizontal from the direction lower than the horizontal and further upward from the horizontal. Disappear. As a result, a gap is generated in the third flow path 17.

FIG. 8 shows a case where a part of the solder balls in the first flow path 15 returns to the storage unit 2.
In addition, when the solder ball in the first flow path 15 does not move to the storage unit 2, the solder ball in the second flow path 16 remains as it is.

FIG. 8 shows a state in which the measuring instrument 1 is further rotated to the right by 45 degrees to be horizontal. Since some of the solder balls in the first flow path 15 move to the storage unit 2, the solder balls in the second flow path 16 also move to the first flow path 15, and the gap generated in the second flow path 16. Occurs. On the other hand, most of the solder balls in the third flow path 17 move to the fourth flow path 18 and move to the temporary storage cavity 20 through the fifth flow path 19 because of the angle of the flow path. With this 90-degree rotation, the weighed solder balls 23 are separated into the temporary storage cavities 20.

FIG. 9 shows a state in which the measuring instrument 1 is rotated slightly to the left by 45 degrees from FIG.
The weighed solder balls extend across the temporary metering cavity 20 and the seventh flow path 21 downstream thereof. On the other hand, the solder balls from the reservoir 2 are blocked by the second flow path 16 and are stagnated.
Next, when the measuring instrument 1 is further rotated, for example, when the rotation angle is set to 70 degrees, the solder ball extending over the temporary measuring cavity 20 and the seventh flow path 21 thereunder passes through the outlet 12. To the guide pipe 40. On the other hand, the solder balls from the storage unit 2 that have been blocked by the movement of the second flow path 16 pass through the third flow path 17 and the fourth flow path 18 and are blocked by the inlet of the fifth flow path 19.

FIG. 10 shows a state in which the measuring instrument 1 is made vertical from the state of FIG. Solder balls from the reservoir 2 are blocked by the inlet of the fifth flow path 19 and stay in the measuring cavity 20. The discharged solder balls 23 are discharged to the guide pipe 26, but are drawn so as to be released to the atmosphere for easy understanding. Further, the solder ball 23 is drawn larger than the actual size because it is difficult to understand at the actual size.

A case where the solder ball covers the inlet 10 of the storage unit 2 will be described.
The solder balls filled in the first flow path 15 and the second flow path 16 cannot flow back to the storage section 2 even if the measuring instrument 1 rotates. On the other hand, the solder balls filled in the third flow path 17 are stationary or slowed in the state in which the measuring instrument 1 is rotated to the right from 45 degrees. 18 and flows out to the fifth flow path 19. However, in this case, since the second flow path 16 faces obliquely upward, the forward movement of the solder balls from the second flow path 16 to the third flow path 17 does not occur.

FIG. 11 is a perspective view of the measuring instrument 1 and is shown upside down, excluding the solder balls, for easy understanding.

Describes residual ball detection.
The optical sensor 35 is mounted near the upper end of the jig mounting plate 43 (see FIG. 4). A remaining amount detection window 14 a is provided on the plate 8 of the measuring unit 3. The remaining amount is detected when the measuring instrument 1 is set up vertically as shown in FIG. As shown in FIG. 3, the light emitting part and the light receiving part of the optical sensor 35 correspond to each other with the remaining amount detection window 14a interposed therebetween. When the light emitted from the light emitting element of the optical sensor 35 is reflected by the solder ball in the remaining amount detection cavity 14 and does not reach the light receiving element, it is determined that there is a residual amount of the solder ball. When the light reaches the light receiving element, it is determined that there is no remaining solder ball.

Since the amount of light reaching the light receiving element may take an intermediate value, it may be standardized with 50% of the output from the light receiving element as a boundary. Even when the remaining amount detection sensor 35 is activated, there are ten or more remaining balls. When the alarm sounds, stop transferring the solder balls and refill the solder balls.

Another embodiment will be described.
The container 4 can also be a container used for selling and transporting solder balls. The capacity of the container 4 may be 20 to 500 cc depending on the size of the granular material, the measurement frequency, and the like. When the size of the container 4 exceeds 1,000 cc, the container 4 may be a large container and connected to the weighing unit with a flexible pipe. When the storage unit and the measuring unit are connected by a flexible pipe, the storage unit can always supply the solder ball to the inlet 10 without rotating. With such a structure, the solder ball is not damaged by the rotation of the measuring instrument.

Although the case where the angle of the measuring instrument 1 in the standby state is vertical has been described, it may be 70 to 110 degrees instead of being vertical. Moreover, although the rotation angle for weighing was described as a reciprocation of 90 degrees, it may be 60 to 110 degrees, and more preferably. 70 to 90 degrees.
In addition, when the rotating surface of the measuring instrument 1 is perpendicular to the jig mounting plate 43, and when a plurality of measuring and feeding devices 39 are arranged in parallel, there is an advantage that the measuring and feeding devices can be arranged densely, but safety and the like are taken into consideration. And it may be parallel.

Moreover, although the 2nd flow path 16, the 5th flow path 19, and the 7th flow path 21 are a flow path of 45 degree | times inclination with respect to horizontal, 20-50 degree | times may be sufficient. When this angle is reduced, the rotation angle required for weighing can be reduced. However, since the present invention uses the gravity acting on the solder ball, the supply speed of the solder ball becomes slow and the breakage of the solder ball accompanying the rotation is reduced. Furthermore, the 2nd flow path 16 and the 6th flow path do not need to be parallel. By changing these conditions, it is possible to change the flow of the solder ball and the stop of the flow.

The cross sections of the second flow path, the third flow path, the fourth flow path, and the fifth flow path are not limited to 2 × 1 mm. The channel preferably has a width of 1 to 10 mm and a depth of 1 to 5 mm.

The seventh flow path is necessary for the solder ball outlet 13 to be disposed below the inlet 11. Therefore, when the outlet 13 is rotated 90 degrees and attached, the solder balls can be discharged to the outlet 13 without staying in the temporary storage cavity. In this case, the outlet 13 is arranged on the right side of FIG.

Replacing the storage part 2 or adding solder balls to the storage part 2 is preferably performed in a state where the remaining solder balls are reduced, because the number of solder balls remaining in the storage part 2 for a long time is reduced. Replacement of the reservoir 2 is performed by removing the guide pipe 26 from the tube guide 24, with the measuring instrument 1 facing upward, and removing the lid.

The detection accuracy of the solder balls remaining in the storage unit 2 is low when the detection is performed in a state where the solder balls are stacked or scattered over a wide area. The detection accuracy is increased by guiding the solder ball to a small space and determining whether the space is filled with the solder ball. Further, in the remaining amount detection, in consideration of the replenishment work of the solder balls, an alarm is issued not when the remaining solder balls are completely removed but when they remain for a predetermined number of times.

The diameter of the solder ball is not limited to 89 μm and may be 20 to 300 μm. Further, in this measuring instrument, a fluid such as water has too high fluidity, and a powder such as wheat flour has poor fluidity and is not suitable for measurement.

The ball weighing device of the present invention can be applied to balls other than solder balls, and can also be effectively applied to non-spherical powders. In addition to the ball transfer device, the ball supply method and the ball supply device of the present invention can also be applied to a ball mounting device that mounts a ball on a substrate using a vacuum suction head.

  Moreover, the ball transfer apparatus of the present invention can be applied not only to balls other than solder balls but also effectively to non-spherical angular particles. Suitable for supply of drugs, food, medicines, etc.

It is a side view of a measuring device. It is a front view of a measuring instrument. It is a side view of the measuring device which applied the measuring device to the ball transfer device, and shows a state where the measuring device is in a standby state. It is a side view of the measuring device which applied the measuring device to the ball transfer device, and shows a state where the measuring device is rotated 45 degrees. It is a side view of the measuring device which applied the measuring device to the ball transfer device, and shows a state where the measuring device is rotated and leveled. It is a figure which shows the flow of the solder ball in a measuring device, and shows the state in which a measuring device is in a standby state. It is a figure which shows the flow of the solder ball in a measuring device, and shows the state which the measuring device rotated 45 degree | times. It is a figure which shows the flow of the solder ball in a measuring device, and shows the state which the measuring device rotated and became horizontal and measured the solder ball. It is a figure which shows the flow of the solder ball in a measuring device, and shows the state which the measuring device rotated 45 degree | times from the horizontal direction (FIG. 8). It is a figure which shows the flow of the solder ball in a measuring device, and shows the state which the measuring device returns to the orthogonal | vertical direction and is discharging the solder ball. The scale is shown in a perspective view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Measuring device, 2 ... Storage part, 3 ... Measuring part, 4 ... Container, 5 ... Cover, 6 ..., 7 ... Rotating shaft, 8 ( 8a, 8b) ... squeegee support plate, 9 ... pin, 10 ... inlet, 11 ... inlet attachment member, 12 ... outlet, 13 ... exit attachment member, 14 ... residual Detection cavity, 14a ... remaining amount detection window, 15 ... first channel, 16 ... second channel, 17 ... third channel, 18 ... fourth channel (metering cavity) ), 19 ... 5th flow path, 20 ... 6th flow path (temporary storage cavity), 21 ... 7th flow path, 22 ... 8th flow path, 23 ... solder ball, 24 ... pipe guide plate, 25 ... ball transfer head, 26 ... guide pipe, 27 ... air cylinder, 28 ... cylinder rod, 29 ... upper and lower plates, 30 ... Rotating plate, 31 ... Rotating shaft, 32 ... Pin, 33 ... Pin guide plate, 34 ... Elongated hole, 35 ... Optical sensor, 36 ... Slider, 37 ... -Motor, 38 ... Mask, 39 ... Measuring device, 41 ... Substrate, 42 ... Lower part of guide pipe, 43 ... Jig mounting plate

Claims (3)

A measuring unit comprising a storage unit for storing the particulate material, a measuring unit for measuring the particulate material, and a driving device for rotating the measuring unit to measure the particulate material, wherein the measuring unit is connected to the storage unit; In a metering device having a connected inlet, a metering cavity for metering the particulate material, a temporary storage cavity for temporarily storing the metered particulate material, and an outlet,
The inlet for receiving the particulate matter from the reservoir to the measuring unit is connected to a first flow path extending vertically downward,
This first flow path is connected to the second flow path extending obliquely downward,
This second flow path is connected to the third flow path extending vertically downward,
This third flow path is connected to the fourth flow path, which is the measurement cavity extending in the horizontal direction,
The measuring cavity is connected to the fifth flow path extending obliquely upward,
This fifth channel is connected to the sixth channel which is the temporary storage cavity extending vertically downward,
The temporary storage cavity is connected to the seventh flow path extending obliquely downward,
The seventh flow path is connected to an eighth flow path extending vertically downward, and the eighth flow path is connected to the outlet for discharging the measured granular substance. . A measuring unit comprising a storage unit for storing the particulate material, a measuring unit for measuring the particulate material, and a driving device for rotating the measuring unit to measure the particulate material, wherein the measuring unit is connected to the storage unit; In a metering device having a connected inlet, a metering cavity for metering the particulate material, a temporary storage cavity for temporarily storing the metered particulate material, and an outlet,
An apparatus for measuring particulate matter, characterized in that the direction of the measuring cavity and the direction of the temporary storage cavity form an angle of approximately 90 degrees. A measuring unit comprising a storage unit for storing the particulate material, a measuring unit provided with a flow path for measuring the particulate material, and a driving device for rotating the measuring unit; In a metering device including an inlet, a metering cavity for metering the particulate material, a temporary storage cavity for temporarily storing the metered particulate material, an outlet for discharging the metered particulate material, and a flow path connecting them,
The particulate matter measuring device, wherein the particulate matter remaining amount detecting portion is disposed between the inlet and the measuring cavity.