JP3284046B2 - Chip component supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting technique for mounting a chip component, which is one form of an electronic component, on a printed circuit board, and more particularly to a chip component supply device used in a chip component mounting machine. The present invention relates to a chip component supply device suitable for aligning and supplying a bulk (bulk) cylindrical or square chip component.

[0002]

2. Description of the Related Art Conventionally, Japanese Patent Publication No.
No. 82952, the upper end of the tubular feed path of the chip component is used as an inlet for the chip component, and the tubular feed path is continuously arranged from the up-down direction to the horizontal direction. At the lateral end where gravity from the subsequent chip component does not act, a component take-out opening and an air suction hole are provided, and a shutter that opens and closes the component take-out opening is provided, and the opening is closed by the shutter to close the opening. There has been proposed a chip component supply device that supplies the chip components in the tubular feeding path by air suction while keeping only the entrance open. Also, in Japanese Patent Application Laid-Open No. Hei 7-176893 proposed by the present applicant, the upper end of a component separating member inserted into a hopper containing a chip component has a tapered opening, and the chip has a configuration suitable for a square chip component. There has been proposed a chip component supply device that supplies components by air suction. However, the stroke in which the hopper containing the chip components reciprocates up and down with respect to the component separation member is limited. When the shape of the chip component to be stored is large, the ratio of the stroke to the stroke becomes relatively small, and the component separation member becomes smaller. If the chip component is mounted in an inclined posture even if the upper end is formed as a tapered opening, the drop will be hindered.

[0003]

SUMMARY OF THE INVENTION The above Japanese Patent Publication No. 6-82.
The conventional device proposed in No. 953 arranges tubular feed paths for chip components continuously from the vertical direction to the horizontal direction,
By sucking air with only the upper end of the chip component open, suction can be performed at the horizontal portion of the tubular feed path, and by forcibly feeding without relying on gravity, high-speed and reliable This is a device that enables the feeding of chip components. Also, as an application proposed in Japanese Patent Application Laid-Open No. 7-176893 and suitable for square chip components, the tubular feed path is not a feed tube exemplified in Japanese Patent Publication No. 6-82953, but a square groove passage, and a component stopper member is used. The same is true even if the device is fixed to the device at the tip of the square groove passage. In any of the apparatuses, the hopper accommodating a large number of chip components in a loose part state is moved up and down with respect to the separation and alignment pipe, and the hopper is moved up and down relative to the separation and alignment pipe inserted into the lower supply hole of the hopper. By exercise
The chip components are sequentially dropped one by one from the upper end entrance of the separation and alignment pipe. At this time, the separation and alignment pipe agitates the chip components contained in the hopper to promote the drop from the upper end entrance. It is fed into a single column through the separating and aligning pipe inner diameter hole which is a part of the beginning of the feed path, connected to the separating and aligning pipe, and passes through the subsequent tubular feed path to reach the component take-out position of the component stopper member and mount it. It is picked up by the suction pin of the head. However, chip parts having a relatively large shape (for example, cylindrical chip parts having an outer diameter of 2.2 mm and a length of 5.9 mm).
In such a case, satisfactory feeding may not be possible, such as a small number of drops in one vertical movement, or a drop may not occur, and a plurality of chip parts may be wedge when the separation and alignment pipe stirs the chip parts. Overlap in shape,
In some cases, the device may not be dropped in a so-called bridge state. In addition, the upper end may have a tapered opening. An object of the present invention is to prevent a situation in which a chip component cannot be supplied and cannot be supplied as described above, so that a chip component having a relatively large shape can be stably dropped from an upper end entrance. It is an object of the present invention to provide a chip component supply device capable of promoting and supplying chips.

[0004]

In order to achieve the above object, a chip component supply apparatus according to the first aspect of the present invention comprises:
A component separating device having a hopper that accommodates chip components and moves up and down, a lower supply hole provided in the hopper, and a through hole that is inserted into the lower supply hole and in which each chip component in the hopper falls. And a member for separating the parts.
Outer diameter portions inserted into the lower supply hole of the member are adjacent to each other
Characterized by at least three stages with different outer diameters
And The chip component supply device of the invention according to claim 2 of the present application is configured to connect one end of the tubular feed path of the chip component to the chip component.
Has an opening for taking out parts and an air suction hole as an entrance
Connected to the other end of the tubular feed path
Then, a shutter for opening and closing the opening for taking out the component is provided.
Providing the shutter, closing the opening with the shutter and opening the entrance
The tip part in the tubular feed path with the open
In the configuration of feeding by air suction, a frame,
A hopper to move vertically relative to the frame housing the chip component, and a lower supply hole provided in the hopper, a separation aligned pipe fixed to the frame is inserted into the lower <br/> section feed hole, Penetrating the separation and alignment pipe up and down,
A through hole that forms one end of the road, and the through hole
The diameter of the upper hole that forms the mouth is the maximum that can be dropped by each chip component.
Increase the size of the lower hole so that it does not exceed twice
From the smallest dimension that the chip parts can fall one by one,
Make the upper hole diameter smaller than the upper hole diameter
The taper hole has a constant slope with the lower hole diameter at both ends.
In addition, the outer diameter portion inserted into the lower supply hole of the separation / alignment pipe is formed in at least three stages having different outer diameters adjacent to each other. According to claim 3 of the present application
The chip component supply device according to claim 2, wherein an outer periphery of an upper end of the separating and aligning pipe is rounded, and a boundary of adjacent outer diameters of the outer diameter portion continuously changes in outer diameter dimension smoothly. It is characterized by.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a chip component supply apparatus according to the present invention will be described below with reference to the drawings. A specific description of the present embodiment will be described with an outer diameter of 2.2 mm and a length of 5.9 mm. The following description will be made on a configuration suitable for a relatively large cylindrical chip component by taking the cylindrical chip component as an example, but the basic configuration is generally used for chip components including square chip components.

FIG. 1 shows an overall configuration of a chip component supply apparatus embodying the present invention. In FIG. 1, what is indicated by a virtual line 1 is a supply base of the chip component mounting machine, and a main body frame 10 of the chip component supply device is provided on the supply base 1.
Is to be placed. An auxiliary frame 10A is fixedly integrated with the main body frame 10.

A slide guide 11 is erected and fixed to the right end of the auxiliary frame 10A, and a hopper 13 is mounted on a slider (also used as a hopper mount) 12 which is slidably supported by the slide guide 11 in a vertical direction. Have been.
A large number of loose chip parts 15 are accommodated in the hopper 13, a supply port 16 is opened on the right side of the hopper 13, and a supply case 9 proposed by the present applicant in Japanese Patent Application No. 7-95842 is mounted on a holder. The holder 14 includes the hopper 13 and the supply case 9 is attached thereto. The holder 14 includes the hopper 13 and the chip case 15 is supplied from the supply case 9 into the hopper 13 through the supply port 16. Then, the motor mounting plate 18 is fixed to the lower right side of the auxiliary frame 10A, and the hopper elevating DC motor 1
9 is fixed. The motor 19 has a speed reducer 19A connected thereto, and a cam (or crank) 20 is fixed to an output rotation shaft of the speed reducer 19A. The cam 20 serves as a hopper mounting base via a cam follower (or link) 21. It is connected to the slider 12. Accordingly, the rotation of the motor 19 causes the slider 12 and the hopper 13 to reciprocate up and down. However, FIG. 1 shows the lowered position of the hopper 13.

The left side of the auxiliary frame 10A constitutes a parts guide 22, and the parts guide 22 has a tubular feeding path 25.
Are formed continuously from the up-down direction to the horizontal direction. The cross-sectional shape of the passage 23 passes through a cross-sectional shape orthogonal to the feeding direction of the chip component 15 and has a shape and dimensions that maintain the feeding posture. That is, it is preferable that the cylindrical chip part is circular and the square chip part is square.However, from the viewpoint of easiness in processing and structure, for example, even for a cylindrical chip part, each side is in contact with the circular shape. It is also possible to have a square shape. In the example of FIG. 1, three of the four surfaces of the passage 23 having a square shape are inner surfaces of grooves formed in the side surface of the auxiliary frame 10 </ b> A, and the other surface is a guide cover 29 (FIG. Is attached to the side surface of the auxiliary frame 10A and the groove is covered. Further, a connecting member 26 connected to the upper end of the passage 23 is held above the auxiliary frame 10A, and a separating and aligning pipe 27 as a component separating member communicating with the passage 23 is connected to the connecting member 26. The separation and alignment pipe 27 is inserted into the lower supply hole 17 of the hopper 13. FIG. 2 shows a cross section crossing the separating and aligning pipe 27. The outer diameter of the insertion portion of the separating and aligning pipe 27 is circular as shown by an imaginary line, and a circular hole 28 is provided inside the upper end of the passage 23. To form a tubular feed path 25.

A component stopper 3 is connected to the left end of the tubular feeding path 25, and a guide 31 on which the component stopper 3 is mounted is fixed to the upper end of the main body frame 10, and the guide 31 is attached to the upper end. The example of the passage 24 shown in FIG. 1 is provided on the upper surface of the guide 31 similar to that described with respect to the passage 23, and includes a passage 24 which forms a tubular feeding passage 25 continuously from the passage 23 of the part guide 22. The upper surface covers the passage 24 and the chip component 1
The guide cover 32 is fixed with small screws 30 which are easy to attach and detach so that 5 does not protrude.

As shown in FIG. 1, a component detection sensor 6 is disposed at an intermediate portion of a passage 23 that extends from the vertical direction to the lateral direction of the tubular feeding path 25. That is, the light-emitting element S1 and the light-receiving element S2 of the component detection sensor 6 are positioned from both sides of the narrowed part guide 22 provided with a small-diameter through-hole through which the detection light passes perpendicularly to the passage 23. The detection sensor 6 is attached to the parts guide 22. The guide cover 29, which is a transparent member that covers the passage 23 from the side surface, is attached to the part guide 22 so that the chip component 15 does not jump out including the detection position of the component detection sensor 6. When the component detection sensor 6 detects the presence of the chip component 15, the power of the DC motor 19 is turned off, the movement of the hopper 13 is stopped, and the supply of the chip component 15 is stopped. Although the component detection sensor 6 is turned on and off instantaneously when the chip component 15 passes, the motor 19 has inertia and does not actually stop. The chip stopper 15 is configured such that a predetermined amount of the chip member 15 is always present at a part of the horizontal portion and the arc-shaped portion of the tubular feeding path 25 by the component stopper portion 3.

The component stopper 3 is located at the left end of the tubular feed path 25, and the end of the tubular feed path 25 is the component pick-up position 4 of the component stopper 3. At the foremost end, a stopper end face (not shown) in the part stopper portion 3 blocks, and the stopper end face has an air suction port (not shown) which functions when the shutter 33 for opening and closing the component take-out position 4 is closed. In a state where the position 4 is closed, the air suction port is evacuated from the inside of the component stopper portion 3 through the air suction passage provided on the left side of the guide 31, the air suction passage provided on the left side of the main body frame 10, and the hose 47 from the joint 46. The negative pressure source of FIG. 1 connected to a negative pressure source such as a pump is a pressure air supply hose 4 to a vacuum generator 48 that generates a negative pressure when supplying pressure air. When, although not shown composed of a pneumatic circuit comprising a solenoid valve for intermittently supplying pressure air source which supplies the pressure air to the hose 49.

The shutter 33 is a shutter holder 3
5, the shutter 31 is slidably held on the left side of the guide 31, and a groove 34 is provided on the side surface of the shutter 33. On the other hand, on the side surface of the main body frame 10, a plate-shaped drive lever 37 and an intermediate lever 50
Are pivotally supported so that they can swing freely in the thickness direction. Then, the holding disc 38 is fixed to the end face of the fulcrum shaft 39 by screwing, and the drive lever 37 and the intermediate lever 50 fall off. It is pivotally supported without swinging in the thickness direction without swinging. An engagement pin 36 is provided above the drive lever 37.
Is fixed at right angles to the plate surface, and the engaging pin 36 is
3, the shutter 33 can be slid in the direction in which the component take-out position 4 opens and closes via the engaging pin 36 when the drive lever 37 is swung. The drive lever 37 has an arm portion 37A on the left end and an engagement protrusion 37B on the lower side.
The intermediate lever 50 is located on the inner side (on the body frame 10 side) of the drive lever 37. The intermediate lever 50 has an arm portion 50A on the left end and an arm portion 50B on the lower side, and has an arm portion 50A and the drive lever 37. The arm portion 37A is vertically opposed on the left side, and a tension spring 52 is stretched in a spring hook hole provided at the end of each arm portion to constantly bias the arm portion 50A and the arm portion 37A in a direction to approach them. ing. Then, the stopper pin 51 is fixed at a right angle to the plate surface of the intermediate lever 50, and the stopper pin 51 comes into contact with the engagement protrusion 37B on the lower side of the drive lever 37, so that the arm 50A and the arm 37A Is a tension spring 5
At a predetermined interval, so that the intermediate lever 50 is normally swung when the drive lever 3 is closed.
7 are also swung together, that is, when the intermediate lever 50 is turned clockwise, the stopper pin 51 is
When the intermediate lever 50 is turned counterclockwise in the direction of pushing, the tension spring 52 transmits a force in the direction of pulling the arm portion 37A. In particular, when the counterclockwise rotation causes a drag force greater than the force transmitted by the tension spring 52 to the drive lever 37. When the tension spring 52 is extended, the drive lever 37 is moved to the intermediate lever 50.
Do not follow the movement of.

A support plate 57 is provided at an intermediate position of the main body frame 10.
A fulcrum shaft 58 is fixedly screwed to the upper portion of the support plate 57 (only a part is visible on the other side of the support plate 57 in FIG. 1). 56
Are supported pivotally in parallel with the plate surface of the support plate 57, and the fulcrum shaft 58 is provided with a stopper from the other side (not shown). The drive plate 56 has an inverted L-shape, and a block 59 (shown on the back side in FIG. 1 and shown by a dotted line) is screwed and fixed to a portion extending to the left on the upper side, and fixed to a portion extending to the lower side. The connection lever 53 is pivotally supported by a support shaft 55, and the other end of the connection lever 53 is pivotally supported by a support shaft 54 fixed to the lower arm 50 </ b> B of the intermediate lever 50.
6 constitutes a link mechanism in which the intermediate lever 50 swings when it swings. The connecting lever 53 is rotatable with respect to the support shafts 54 and 55 and is prevented from falling off. A spring hook 61 is attached to a side surface of the main body frame 10, and the drive plate 5
6 attaches the other spring hook 62 to the side of the downwardly extending portion, and stretches a tension spring 60 across each of the spring hooks 61 and 62. The tension spring 60 always rotates the driving plate 56 clockwise. When the intermediate lever 50 is rotated clockwise via the connecting lever 53, the drive lever 37 is rotated clockwise via the stopper pin 51. Then, the engagement lever 36 is moved from the engagement pin 36 via the groove 34. To move the shutter 33 to the right,
The right end of the guide abuts against the left end of the guide cover 32 and stops. A tension spring 60 urges the shutter 33 in a direction in which the component take-out position 4 is always closed, and blocks the portion extending to the left above the drive plate 56. The place where 59 is fixed is always lifted. Therefore, when the push-down lever of the drive means provided in the chip component mounting machine pushes the block 59 in the direction of arrow F, the drive plate 56 swings counterclockwise against the tension spring 60, and the connecting lever The intermediate lever 5 swings counterclockwise through 53 via the intermediate lever 5.
The counterclockwise swing of 0 causes the drive lever 37 to swing counterclockwise via the tension spring 52. The engagement pin 36 fixed to the drive lever 37 moves the shutter 33 to the left.
Even if the shutter 33 reaches the left end and cannot move, the arrow F
When the position of the block 59 is still pushed down in the direction of
The intermediate lever 50 swings counterclockwise, but the drive lever 37 cannot move with the engaging pin 36 because the shutter 33 cannot move, and the extension spring 52 is extended. In addition to the above configuration, a driving member 63 pivotally supported by a fulcrum pin 64 fixed to the lower side surface of the main body frame 10 is provided, and a long hole 65 is provided in a left arm portion of the driving member 63. The chip component mounting machine has a roller 66 rotatably pivotally attached to the lower arm 50B of the intermediate lever 50, and the other arm protruding below the driving member 63. When the engaging lever of the driving means pushes the arm portion in the direction of arrow F ', the intermediate lever 50 swings counterclockwise via the roller 66, that is, the shutter 33 can be moved from below. Configuration.

A set piece 40 is provided at the left end of the frame 10.
A lock claw 41 is attached to the lower side. The set piece 40 is engaged with the front wall of the supply base 1 on the chip component mounting machine side. The lock claw 41 forms a toggle mechanism with the link plate 42, the lock lever 43, and the fulcrum plate 44. The lock claw 41 comes off the supply unit base 1 when the lock lever 43 screwed and fixed to the fulcrum plate 44 pivotally attached to the main body frame 10 is pulled up as shown by the phantom line 43 ′ in FIG. In this state, the main body frame 10 and all the mechanisms attached thereto can be removed from the base 1. When the lock lever 43 is in the state shown by the solid line, the mounting state is established, and the lock claw 41 is engaged with the engagement plate 45 on the chip component mounting machine side.

Further, the separating and aligning pipe 27 is
3 and 4 are cross-sectional views showing portions where the hopper 13 is inserted into the lower supply hole 17. FIG. 3 shows a state where the hopper 13 is lowered as in FIG. 1, and FIG. 4 shows a state where the hopper 13 is raised. Indicates the status. Separating and aligning pipes 27 are 27A, 2 in order from the top.
Adjacent outer diameters of 7B, 27C, 27D, 27E, and 27F have different outer diameters and concentric circles are integrally formed in a row in a row. Outer diameters 27A and 27C have the same outer diameter, but have the same outer diameter. The outer diameter portion 27B has an outer diameter slightly smaller than the outer diameter portions 27A and 27B. In the example shown here, the outer diameter portions 27D and 27F have the same outer diameter size and are larger than the outer diameter portion 27C. The outer diameter portion 27E has an outer diameter smaller than the outer diameter portion 27D and has a flat cutout surface which is pressed by the concave groove portion of the connecting member 26 as shown in FIG. And upper and lower flange portions for holding the separation and alignment pipe 27 so as not to come off in the axial direction. The separation pipe 27
Inside the outer diameter portions 27A, 27B, 27C, 27
A circular hole 28 concentric with D, 27E, 27F is vertically penetrated. The circular hole 28 has a hole diameter d1 on the upper end side of the separation and alignment pipe 27 and a hole diameter d2 on the lower end side of d1.
> D2, and the diameter d1 side of the tapered hole of the circular hole 28 is a side on which the chip component 15 in the hopper 13 is taken into the circular hole 28 and dropped, and the diameter d2 side. Is a side on which the chip component 15 taken in and dropped into the circular hole 28 is sent to the passage 23. It is desirable that the hole diameter d1 is large so that the chip component 15 can be easily taken in. It becomes a cause of clogging. Therefore, the dimension of the outer shape of the chip component 15 to the minimum dimension of the outer shape (in the example of the present embodiment, the outer diameter is 2.2 mm corresponds) so that two or more chips are not inserted. The diameter should be selected from a range of the smallest diameter that can be dropped from a diameter not exceeding twice, while taking into account the dimensional variation of the chip component 15 and the processing accuracy of the circular hole 28 within the range. The diameter of the hole d2 is preferably smaller than that of the passage 23 when the chip component 15 is fed into the passage 23. Makes a selection closer to the smallest diameter that can be dropped. As a result, the hole diameters d1 and d2 become tapered holes in a relationship of d1> d2, and the chip component 15 is separated from the alignment pipe 27.
Efficiently take in from the upper end entrance hole diameter d1 side and drop it one by one in order. The taper hole having a constant inclination over the entire length L of the separation and alignment pipe 27 prevents clogging. Was found to be loose and prevent clogging.

On the other hand, the holder 14 includes a hopper 13 and a structure in which the supply case 9 described above is mounted. The hopper 13 has a space formed by an inner wall surface 13A and a conical surface 13B connected to a lower end thereof, and has a large number. Bulk chip component 1
5 can be accommodated, and the funnel-shaped lower end of the conical surface 13 </ b> B is continuous with the upper end of the lower supply hole 17. A holder 14 including the hopper 13 is screwed and fixed to an upper portion of the slider 12, and the slider 12 is slidably supported in a vertical direction by a slide guide 11 fixed to an auxiliary frame 10A having a part guide 22 as a part. The holder 1
4 is fixed to the upper part of the slider 12 so that the direction in which the lower supply holes 17 of the hopper 13 pass through the outer diameter portions 27A and 27C of the separation and alignment pipe 27 is parallel to the sliding direction of the slider 12. The separating and aligning pipe 27 is connected to the upper portion of the part guide 22 which is a part of the auxiliary frame 10A via the connecting member 26, and the insertion direction of the outer diameter portions 27A and 27C inserted into the lower supply hole 17 of the hopper 13 is such that the slider 12 slides. Hold it parallel to the direction. The outer diameter portions 27A and 27C and the lower supply hole 17 are concentrically aligned with each other. In other words, the dimension of the gap should be smaller in the range of, that is, the smaller the dimension of the gap is, as far as possible, the smaller the dimension of the gap is. This means that the outer diameter portion 27B must not protrude outside the outer diameter portions 27A and 27C.
Reciprocating up and down from the lowest position shown in FIG. 4 to the highest position shown in FIG. 4. The lower supply hole 17 of the hopper 13 and the outer diameter of the separation and alignment pipe 27 during the reciprocating up and down movement of the holder 14. There is a position where a gap is formed between the lower supply hole 17 and the outer diameter portion 27 of the separation alignment pipe 27 to such an extent that the chip component 15 does not bite into the gap.
The gap with B is determined. The outer periphery of the upper end of the separation / alignment pipe 27, the boundary between the outer diameter portions 27A and 27B, and the boundary between the outer diameter portions 27B and 27C are rounded or smoothly changed in outer diameter size, and the lower supply hole 17 is formed.
Alternatively, the shape is such that the insertion of the chip components 15 into the assembly is made smoother and the chip components 15 are not damaged.

As shown in FIG. 3, a passage 23 constituting a tubular feed path 25 is opened at the upper end of the part guide 22. The upper end of the part guide 22 is connected to the opening through a connecting member 26. The circular hole 28 of the separating and aligning pipe 27 is concentrically held and held. As described above, the cross-sectional shape of the passage 23 is such that the chip part 15 has a circular shape for a cylindrical chip part and a square shape for a square chip part. However, it is also possible to form a square shape such that each side is in contact with the circular shape, for example, even for a cylindrical chip component from the viewpoint of processing and structural easiness. 2
7, a circular hole 28 suitable for a cylindrical chip component penetrates, and if the diameter of the circular shape where each side of the passage 23 at the upper end of the parts guide 22 contacts d3, the separation and alignment pipe 27
The diameter d2 of the circular hole 28 at the lower end side of d is d3 = d2
Alternatively, it is necessary to concentrically match the relationship of d3> d2. If the edge of the passage 23 protrudes to the inner diameter side of the circular hole 28 of the separation and alignment pipe 27 and a step is generated, the chip component which has dropped the circular hole 28 As a practical measure, it is difficult to keep the edge from completely protruding in the relationship of d3 = d2, and it is difficult to maintain the processing accuracy and the assembly accuracy in the relationship of d3> d2. In consideration of the variation, d3 is set to an appropriate diameter for d2.

As described above, the portion where the separation and alignment pipe 27 is inserted into the lower supply hole 17 of the hopper 13 included in the holder 14 is the outer diameter portion 27A, 27B, 27C. Figure 4 from the position
The reciprocating up and down movement between the highest positions shown in FIG. Therefore, the separation and alignment pipe 17 is inserted into the lower supply hole 17 of the hopper 13 by the reciprocating vertical movement of the holder 14.
The outer diameter portions 27A and 27C having the same outer diameter size and a portion having an outer diameter portion 27B having a slightly smaller outer diameter size therebetween are inserted, that is, an outer diameter size slightly smaller than the lower supply hole 17 is inserted. The portion including the outer diameter portions 27A and 27B moves relative to each other with the outer diameter portion 27B interposed therebetween, and enters and exits the funnel-shaped lower end of the conical surface 13B of the hopper 13. That is, the conical surface of the hopper 13 The outer diameter portions 27 </ b> A and 27 </ b> A having different outer diameters adjacent to each other with respect to the set of the chip components 15 are to enter and exit from a large number of loose chip components 15 housed with 13 </ b> B at the bottom.
B and 27C move relative to each other. Since the tip parts 15 do not become wedge-shaped even in a stepped portion having a different outer diameter, the tip parts 15 are separated one by one from the upper entrance of the separation and alignment pipe 27. It has been found that when each of them is sequentially dropped, the occurrence of a so-called bridge state is prevented.

Next, the operation of the overall configuration in the above embodiment will be described. First, supply case 9 to holder 14
To open the exit shutter of the supply case 9;
Chip parts 15 are supplied from the supply case 9 into the hopper 13 through the supply port 16, and the supply case 9 is mounted on the holder 14 as it is. Then, the chip parts 15 in the hopper 13 are referenced to the upper side of the supply port 16. It is naturally replenished so that the amount is almost constant. Then motor 19
Causes the hopper 13 to reciprocate up and down via a cam (or crank) mechanism. For this reason, the adjacent outer diameter portions 27A of the separation and alignment pipe 27 having different outer diameter sizes.
, 27B and 27C are inserted through the lower supply hole 17 and move relative to each other.
The chip component 15 is agitated at the upper end of the separating and aligning pipe 27 and the portion having a different outer diameter, and from the upper end to the lower end of the separating and aligning pipe 27, from the hole diameter d1 of the circular hole 28 to the hole diameter d2.
8 and then fall down the vertical portion of the passage 23 and pass through the arcuate portion in the horizontal direction, and eventually the tubular feed path 25
It reaches the right end of the passage 24 in the horizontal part. In the horizontal part, the chip component feeding action by gravity is eliminated. For this reason, the component take-out position 4 of the component stopper 3 is set to the shutter 33.
In a state where only the upper end of the separation and alignment pipe 27 is open, air is sucked through a path from the air suction port in the component stopper portion 3 to the hose 47. As a result, a path leading to the hose 47 via the external ventilation hole of the hopper 13, the inside of the hopper 13, the circular hole 28 of the separation and alignment pipe 27, the tubular feeding path 25 of the passages 23 and 24, and the air suction port in the component stopper portion 3. Is generated, and the chip component 15 in the horizontal portion of the tubular feeding path 25 receives the feeding force in the left direction, and the posture of the chip component 15 changes from the vertical direction to the horizontal direction along the arc of the passage 23. , State-of-the-art chip components 15
Is a component stopper 3 located at the left end of the tubular feeding path 25.
Abuts against the end face of the stopper and stops. That is, the leading-edge chip component 15 is positioned at the component take-out position 4.

Thereafter, when a driving means provided in the chip component mounting machine, for example, a pressing lever provided in a mounting head for picking up the chip component 15 at the component pick-up position 4 pushes the block 59 in the direction of arrow F, the driving plate 56 Swings counterclockwise against the tension spring 60, swings the intermediate lever 50 counterclockwise via the connecting lever 53, and swings the drive lever 37 counterclockwise via the extension spring 52, and so on. Then, the shutter 33 is moved to the left via the engagement pin 36. Since the position of the block 59 is not normally pushed in the direction of the arrow F, the pulling force of the tension spring 60 is applied to the shutter 33 from the stopper pin 51 by the engaging projection 3.
Acting through 7B, it comes into contact with the left end of the guide cover 32 to seal the component take-out position 4. When the drive lever 56 starts to swing counterclockwise by pushing the push-down lever, the shutter 33 is moved to the left, so that the shutter 33 does not come into contact with the left end of the guide cover 32. The driving lever 37 transmits the counterclockwise force to the driving lever 37 while maintaining the state of contact with the driving lever 37B. The driving lever 37 moves the shutter 33 to the left via the engagement pin 36 to open the component take-out position 4. At the same time, when the shutter 33 is moved to the left, the air suction port is shut off on the way from the inside of the component stopper 3 to the joint 46, and the air suction to the tubular feeding path 25 is stopped. In the state where the shutter 33 is opened, the component take-out position 4
Is sufficiently opened, the air suction port is completely shut off, and the state where air suction does not work on the chip component 15 continues. Then, the suction pin of the mounting head descends to the component take-out position 4 where the shutter 33 is fully opened, and sucks, lifts, and transfers the chip component 15 at the forefront.

When the leading-edge chip component 15 is picked up, the driving means for pressing the block 59 in the direction of arrow F returns, and the shutter 33 returns by the force of the tension spring 60, so that the shutter 33 becomes the guide cover. The air suction port which contacts the left end of the nozzle 32 and reaches the joint 46 communicates with it, so that the next chip component 15 can be fed and positioned at the component removal position 4. In addition, the tubular feeding path 25
In the middle portion of the passage 23, a predetermined amount of the chip component 15 is always present in the tubular feeding path 25 in order to prevent the chip component 15 from being full or insufficient. The component detection sensor 6 detects the presence or absence of the chip component 15, and when the presence of the chip component 15 is detected, stops the operation of the motor 19, stops the vertical movement of the hopper 13, and moves the chip component from the separation and alignment pipe 27 to the passage 23. When the supply of the component 15 is stopped, and the presence of the chip component 15 is not detected, the motor 19 is operated. Therefore, control is always performed so that the chip component 15 is present in the tubular feed path 25 by a predetermined amount. Further, the tubular feed path 25 is not limited to the configuration in which only the entrance of the chip component 15 at the upper end of the separation and alignment pipe 27 is opened. In some cases, the supply of the chip component 15 can be made smoother by providing only the air flow in the horizontal portion.

[0022]

As described above, according to the chip component supply device of the present invention, a hopper that accommodates chip components and moves up and down, a lower supply hole provided in the hopper,
A component separating member having a through-hole through which the chip component in the hopper is dropped one by one through the lower supply hole.
And inserted into the lower supply hole of the component separating member.
The outer diameter part is at least three steps with different outer diameters adjacent to each other
So that the chip components in the hopper are
Stir even different parts and wedge-shaped chip parts
And the occurrence of a bridge state can be prevented. Ma
Stable even when the chip components in the hopper are running low
To make sure that the supply is complete and facilitates delivery. Ma
In addition, separate the alignment pipe inserted through the lower feed hole of the hopper.
In the case where the chip component is provided, the through hole of the separating and aligning pipe has an upper hole diameter, which is an entrance of the chip component, made large so as not to exceed twice a minimum size of each chip component that can be dropped, and a lower hole diameter of the chip component. The diameter of each hole is made smaller than the minimum size that can be dropped from the minimum size that does not exceed the upper hole diameter, so that the slope with both upper and lower hole diameters at both ends is provided with a constant taper hole.
In this case, the upper hole diameter can be increased as long as the chip components can be taken in one by one, the number of chip components falling by one vertical movement of the hopper can be increased, the lower hole diameter can be reduced, and the subsequent tubular feeding can be performed. Since the diameter of the road does not need to be increased unnecessarily, a step for preventing the drop of the chip component does not occur, and the posture of the chip component is easily maintained. Further, if the through hole is provided with a constant taper hole having the upper hole diameter and the lower hole diameter at both ends, the inclination of the taper hole becomes the gentlest, and the chip component is less likely to be clogged. An extremely reliable chip component supply device can be provided.

[Brief description of the drawings]

FIG. 1 is a front view, partially in section, showing an embodiment of a chip component supply device according to the present invention.

FIG. 2 is a cross-sectional view of the separation and alignment pipe 27 held by the coupling tool 26, taken along the line AA shown in FIG.

FIG. 3 is a cross-sectional view showing the separation and alignment pipe 27 and the holder 14 at the lowest position from the side.

FIG. 4 is a cross-sectional view showing the separation and alignment pipe 27 and the holder 14 at the highest position from the side.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Supply base 3 Component stopper 4 Component removal position 6 Component detection sensor 10 Main body frame 13 Hopper 14 Holder 15 Chip component 17 Lower supply hole 19 DC motor for hopper up / down 22 Parts guide 23, 24 Passage 25 Tubular feed path 26 Connection Tool 27 Separating and aligning pipe 27A, 27B, 27C Outside diameter portion of separating and aligning pipe 27 28 Circular hole d1, d2, d3 hole diameter of separating and aligning pipe 27 33 Shutter 37 Drive lever

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-176893 (JP, A) JP-A-6-32424 (JP, A) JP-A-1-183200 (JP, A) JP-A-7- 212085 (JP, A) JP-A-8-148883 (JP, A) JP-A-55-164207 (JP, U) JP-A-57-168273 (JP, U) JP-A-58-77100 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) H05K 13/02

Claims (3)

(57) [Claims] 1. A hopper that accommodates chip components and moves up and down, a lower supply hole provided in the hopper, and a through hole through which the chip components in the hopper are dropped one by one through the lower supply holes. and a component separating member having,
The chip component supply device according to claim 1, wherein outer diameter portions of the component separating member inserted into the lower supply holes are formed in at least three stages having different outer diameter sizes adjacent to each other. 2. One end of the tubular feed path of the chip component is used as an entrance of the chip component, and a component stopper having a component take-out opening and an air suction hole is connected to the other end of the tubular feed path. A chip component supply device that is provided with a shutter that opens and closes a component take-out opening, closes the opening with the shutter, and keeps the entrance open to feed chip components in the tubular feed path by air suction. In the frame, a hopper that accommodates chip components and moves up and down with respect to the frame, a lower supply hole provided in the hopper, a separation alignment pipe inserted into the lower supply hole and fixed to the frame, A through hole vertically penetrating the separation / alignment pipe and forming one end of the tubular feeding path; and the through hole is capable of dropping chip components one by one at an upper hole diameter forming an entrance of the chip component. The diameter of the lower hole is reduced within a range not exceeding twice the minimum dimension, and the diameter of the lower hole is reduced from the minimum dimension at which the chip component can be dropped one by one within a range not exceeding the diameter of the upper hole. An outer diameter portion provided with a taper hole having a constant slope having both ends of the hole diameter and being inserted into the lower supply hole of the separation and alignment pipe.
The parts are composed of at least three steps with different outer diameters adjacent to each other
Chip component feeding apparatus characterized by the. Wherein an upper end outer periphery of the separation aligning pipe is attached R, the outer different boundary outer diameters of phase adjacent diameter portion according to claim 2, wherein a continuous gently changes in the outer diameter Chip parts supply equipment.