JP6651301B2 - Parts supply device - Google Patents

Description

  The present invention relates to a component supply device mounted on a component mounting device, and more particularly to a component supply device that sequentially transports components to a predetermined take-out position using a transport belt.

  For example, Patent Literature 1 discloses a component supply device that includes an endless transport belt, and sequentially transports components placed on the transport belt to a predetermined removal position as the transport belt rotates. I have. This component supply device has a stopper having a permanent magnet at a position in front of the take-out position, holds the leading component in contact with the stopper, and rotates the transport belt in the reverse direction to separate the leading component from the succeeding component. This is a configuration in which components are taken out in a state in which the components are held. By separating the leading part from the succeeding part in this way, smooth removal of the leading part is realized.

JP-A-11-274795

  However, in the conventional component conveying device disclosed in Patent Literature 1, the types of components are limited because permanent magnets are used to separate a leading component from a succeeding component.

  Also, if a component is held in the stopper and there is no subsequent component, and the component is to be replenished, the leading belt held by the stopper and the transport belt rub for a long time due to the movement of the transport belt accompanying the replenishment. And the transport belt may be damaged. This problem can be solved by replenishing parts after the parts have been used up, but in this case, after taking out the last part, the supply of parts will not be possible for a long time until the next part reaches the takeout position. Possible and inefficient.

  The present invention has been made in view of the above circumstances, and can increase the degree of freedom of supply components, and can efficiently supply components while avoiding damage to components and a conveyor belt. The purpose is to provide.

In order to solve the above problems, the present invention provides a component supply apparatus for supplying while conveying the parts, each both ends of the component extend parallel to one another in the conveying direction of the part, below and the side of the component A guide member comprising a pair of guide rails for guiding while supporting from the guide member, and a guide member having a component take-out portion at a predetermined position, disposed between the pair of guide rails along the guide rail , and supported on the guide rail. And a conveyor belt for moving the conveyed parts, wherein the pair of guide rails includes a first area where the parts supported on the guide rails and the conveyor belt come into contact with each other, and the conveying direction of the first area. It includes a second region located downstream, where the component supported on the guide rail is not in contact with the conveyor belt, and has the component take-out portion in the second region.

According to this component supply device, the component is conveyed along the pair of guide rails ( guide members ) and is extruded from the first area to the second area, or moves from the first area to the second area by inertia, It is arranged in a component take-out part provided in the second area. Since the components arranged in the component take-out unit are in a non-contact state with the transport belt, for example, if the transport belt is moved in the reverse direction, the component can be separated from a subsequent component while the component take-out unit is on standby. . Therefore, it is possible to separate the leading component from the succeeding component without using a magnet as in the related art. In addition, even when the conveyor belt is driven to replenish components, the standby parts of the component take-out section do not rub against the conveyor belt, and the friction and damage to the parts and the conveyor belt can be prevented beforehand. Becomes Therefore, according to this component supply device, the degree of freedom of the supplied components can be increased, and the components can be supplied more efficiently while avoiding damage to the components and the transport belt.

  More specifically, the second area corresponds to a portion of the transport belt where the traveling direction is reversed in the opposite direction from the transport direction.

According to this configuration, for example, a pair of guide rails ( guide members ) is extended to a portion of the transport belt whose traveling direction is reversed along the pulley, and a component take-out portion is provided in the extended portion. it can. Therefore, it is possible to enjoy the above-described effects with a relatively simple configuration.

In the above-described component supply device, it is preferable that the component extraction unit has a holding structure for holding a component. Specifically, the pair of guide rails have a horizontal guide surface for guiding a component, and the component take-out portion is a concave portion that is recessed downward from the guide surface and holds the component in a dropped state. Is preferred.

  According to such a configuration, it is possible to make the component take-out section stably put the component on standby, so that it is possible to reduce troubles such as a component removal error. In particular, according to the configuration in which the components are dropped into the concave portion to be on standby, it is possible to effectively prevent the components of the component extracting unit from falling over during standby.

  Further, it is preferable that the component supply device includes a stopper that regulates movement of the component that has reached the component extraction unit in the transport direction.

  According to this configuration, it is possible to effectively prevent the leading component, which is waiting in the component extracting unit, from being pushed by the subsequent component and displaced or falling down.

  Note that the component supply device includes a control device that controls driving of the transport belt, and the control device drives the transport belt in the transport direction to move a leading component to the component removal unit. It is preferable that the operation and a separating operation for separating the leading component from its succeeding component by driving the transport belt in a direction opposite to the transport direction after the feeding operation are performed.

  According to this configuration, it is possible to satisfactorily separate the leading part and the succeeding part waiting at the part take-out unit, and it is possible to more smoothly take out the leading part.

  As described above, according to the present invention, it is possible to increase the degree of freedom of supply components, and it is possible to efficiently provide components while avoiding damage to components and the conveyor belt.

It is a top view showing the component mounting device provided with the component supply device (stick feeder) of the present invention. It is a perspective view of a stick feeder. FIG. 3 is a front view of the stick feeder (a view as seen from an arrow A in FIG. 2). FIG. 4 is a cross-sectional view of the stick feeder (a cross-sectional view taken along line IV-IV in FIG. 3).

  Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a plan view of a component mounting apparatus of the present invention (an example of a component mounting apparatus on which the component supply apparatus of the present invention is mounted). FIG. 1 shows XY coordinate axes for clarifying the directional relationship. Here, the X direction is a direction parallel to the horizontal plane, and the Y direction is a direction orthogonal to the X direction on the horizontal plane. In the following description, the Y direction is referred to as the front-back direction, the Y1 direction is referred to as the front, and the Y2 direction is referred to as the rear.

  The component mounting apparatus 1 includes a base 2, a substrate transport conveyor 3 disposed on the base 2, a pair of component supply units 4 and 5, and components taken out from these component supply units 4 and 5. A head unit 8 for transporting the substrate onto a substrate B such as a printed circuit board.

  The conveyor 3 includes a pair of belt conveyors 3a, 3a extending parallel to each other in the X direction. The conveyor 3 receives the board B from another external device, transports the board B to a predetermined work position, stops the work, and unloads the board B after the work is completed.

  On both front and rear sides of the conveyor 3, component supply units 4, 5 are provided. A plurality of tape feeders 4a for supplying components using a tape as a carrier are installed in the component supply section 4 on the front side of the apparatus, and the component supply section 5 on the rear side of the apparatus supplies components in a state of being arranged on a tray. And a plurality of stick feeders 7 for supplying components contained in a cylindrical component storage container called a stick while pushing the components out of the stick. The stick feeder 7 is a component supply device according to the present invention, and its configuration will be described later in detail.

  The head unit 8 is provided movably in the XY directions above the base 2. That is, on the base 2, an orthogonal robot 9 driven by a linear motor or the like is installed, and the head unit 8 is supported by the orthogonal robot 9.

  The head unit 8 is equipped with a plurality of heads 8a each having a nozzle for picking up components at the tip. In this example, six heads 8a are provided. Each head 8a is an axial head extending in the up-down direction, and is supported by the head unit 8 in a state where it can move up and down (elevate up and down) and rotate around a central axis, and is driven by, for example, a servomotor. I have.

  The component mounting apparatus 1 includes a control device (not shown) for controlling the operation thereof. The above-described conveyor 3, the head unit 8, and the feeders 4a and 7 are all controlled by the control device. You. Then, based on the control of the control device, a mounting operation for mounting components at predetermined mounting points on the substrate B while the head unit 8 reciprocates between the component supply units 4 and 5 and the substrate B on the conveyor. Is to be executed.

  FIG. 2 shows the stick feeder 7 in a perspective view.

  As shown in FIG. 1, the stick feeder 7 includes a frame body 10, a stick supporting portion 12 provided on an upper portion of the frame body 10, and a component for pushing out the component P from the stick S held by the stick supporting portion 12. An extruding mechanism unit 14 and a component transport unit 16 that transports the component P extruded from the stick S to a component suction position by the head 8a are provided.

  The frame main body 10 has a hollow box shape that is flat in the width direction (the width direction of the stick feeder 7; X direction / hereinafter, simply referred to as the width direction) extending in the front-rear direction (Y direction) and has an open top. I have. The stick support 12 is provided on the upper portion of the frame body 10, the component pushing mechanism 14 is provided on the rear, and the component transporter 16 is provided on the front.

  The stick support unit 12 includes a stick table 20 on which the stick S is placed, a front chuck 22 that holds a front end of the stick S, a rear chuck 23 that holds a rear end of the stick S, and drives these. Actuators 21 and 25 that perform the operations.

  The stick table 20 is disposed inside the upper part of the frame body 10. The stick table 20 is swingably supported by the frame body 10, and is provided so as to be displaceable between an operating position for supporting the stick S and a retracted position retracted outward from this position by driving the actuator 21. I have.

  The front and rear chucks 22 and 23 have a pair of claw portions 24a that open and close in the width direction, and are driven by the actuator 25, respectively. Each claw portion 24a is a long claw extending in the vertical direction, and can simultaneously hold a plurality of sticks S placed on the stick table 20. In the illustrated example, there is only one stick S, but up to seven sticks S can be placed on the stick table 20 in a stacked state. Can be simultaneously held. In other words, when the lowest stick S is emptied due to a component supply operation described later, both chucks 22 and 23 hold the sticks other than the lowest stick, and in this state, the stick table 20 is displaced to the retracted position. Only the lowest stick S is dropped (discarded) to the inner bottom of the frame body 10 by its own weight. After the stick S is discarded, the stick table 20 returns to the operating position, and both chucks 22 and 23 are opened, so that the remaining sticks S are placed on the stick table 20 and the next (lowest) (1) The parts are supplied from the stick S.

  The component pushing mechanism unit 14 pushes a component forward from the lowest stick S among the plurality of sticks S held by the stick support unit 12, and has a long compression coil spring (hereinafter, referred to as a non-illustrated compression coil spring). , A coil spring), a spring accommodating portion 26 accommodating the coil spring wound around a reel, and a spring moving device 28 for moving the coil spring in a longitudinal direction thereof. That is, the component pushing mechanism unit 14 sends the coil spring from the rear end portion of the stick S into the inside while pulling the coil spring out of the spring accommodating portion 26, and presses the component by the elastic force of the coil spring, so that the component in the stick S is While the leading component is pushed out to the component transport section 16, the coil spring is stored in the spring storage section 26 when the stick S is discarded.

  In addition, the frame main body 10 is provided with a movable frame 30 that can be displaced in the front-rear direction along a rail 32 on a side portion thereof, and the rear chuck 23 and its actuator 25, and the component pushing mechanism unit 14, It is mounted on the movable frame 30. Thus, the stick feeder 7 can handle sticks S of a plurality of sizes having different lengths.

  The component transport section 16 includes a guide frame 34 fixed to the frame body 10, a pair of guide rails 35 (corresponding to a guide member of the present invention) for guiding components pushed out from the stick S, and There is provided a belt transport mechanism for moving the component along the component take-out unit 40 to be described later, and a stopper 46 for restricting the movement of the component in the component take-out unit 40.

  The pair of guide rails 35 are arranged at predetermined intervals in the width direction, and extend forward from the position of the tip of the stick S mounted on the stick table 20 in parallel with each other. These guide rails 35 are fixed to the guide frame 34.

  As shown in FIGS. 3 and 4, each guide rail 35 forms a long guide rail main body 36 extending in the front-rear direction and a distal end portion of the guide rail main body 36 to form a component take-out portion 40 described later. And a supporting member 38.

  Each guide rail main body 36 has a vertical guide side surface 37b that regulates the position of the component P in the width direction, a component support portion 37a that projects inward from a lower end of the guide side surface 37b and supports the lower surface of the component P, It has a lift restricting portion 37c that protrudes inward from the upper end of the guide side surface 37b and restricts upward displacement of the component P, that is, lift. The component support portion 37a, the guide side surface 37b, and the lift restricting portion 37c continuously extend in the front-rear direction from the rear end of the guide rail main body 36 to a position near the front end.

  Here, as shown in FIGS. 2 and 3, the component P has a horizontally long and rectangular parallelepiped package body Pa in this example, and has a plurality of lead terminals Pc extending downward on the lower surface thereof. Mold package parts. As shown in the figure, the component P is pushed out of the stick S with its longitudinal direction being parallel to the width direction of the stick feeder 7. Projecting portions Pb projecting outward are provided on both end surfaces in the longitudinal direction of the package body Pa, and these projecting portions Pb are formed by the component supporting portion 37a of the guide rail body 36, the lift regulating portion 37c, In the state inserted between them, it is supported on the upper surface of the component support portion 37a and guided horizontally along both guide rail bodies 36.

  At a position slightly behind the tip of the guide rail main body 36 in the component support portion 37a, as shown in FIG. 4, a cutout portion for substantially one component is formed. The support member 38 is fixed to the guide rail main body 36 so as to be interposed from the lower side in the defective portion. The upper surface of the portion of the support member 38 interposed between the deficient portions is flat and one step lower than the upper surface (corresponding to the guide surface of the present invention) of the component support portion 37a. A component take-out portion 40 formed of a concave portion that is concave downward is formed at the tip portion. That is, the component P guided to the tip portion along the guide rail 35 is held in a state of being dropped into the component take-out portion 40 as shown by a two-dot chain line in FIG. The head 8a is sucked and taken out. Note that, in each guide rail main body 36, there is no lift control portion 37c in a region on the distal end side from the component take-out portion 40, so that the component P can be taken out from the component take-out portion 40 upward. .

  The belt transport mechanism drives a plurality of pulleys including a pulley 44 provided at a front end of the guide frame 34, an endless transport belt 42 stretched over these pulleys, and drives at least one of the plurality of pulleys. And a servo motor (not shown) for moving the conveyor belt 42 around.

  The transport belt 42 is disposed substantially at the center of the pair of guide rails 35, and extends in the front-rear direction along the component support portion 37a of the guide rail main body 36, as shown in FIGS. That is, the transport belt 42 moves the component P along the guide rail 35 while supporting the leading end (lower end) of the lead of the component P supported by the component support portion 37a.

  The component take-out portion 40 is located at a position downstream of the center position of the pulley 44 provided at the front end of the guide frame 34 in the component transport direction, that is, above a portion where the traveling direction of the transport belt 42 is reversed. Is provided. In other words, as shown in FIG. 4, the guide rail 35 includes a first region Ta where the component P supported by the guide rail 35 (the component support portion 37a) and the transport belt 42 are in contact with each other. The second region Tb is located downstream of the first region Ta (the right side in FIG. 4) and supported by the guide rail 35, and has a second region Tb where the transport belt 42 is not in contact. The component take-out part 40 is provided in the area Tb. With this configuration, it is possible to cause the component P held by the component extraction unit 40 to wait in a non-contact state with the transport belt 42.

  As described above, the stopper 46 restricts the movement of the component P that has reached the component extraction unit 40, that is, prevents the leading component P from being pushed by the subsequent component P and falling.

  The stopper 46 is a shaft-like member having a rectangular cross-section extending in the width direction. The stopper 46 straddles the front end portions of the two guide rail bodies 36 so as to abut the front surface of the component held by the component take-out portion 40. It is fixed to.

  The stick feeder 7 is electrically connected to the control device, and the stick support unit 12, the component pushing mechanism unit 14, and the component transport unit 16 are all controlled by the control device. Has become. The component supply operation of the stick feeder 7 under the control of the control device is as follows.

  First, the rearmost component P in the stick S is pressed from the rear side by the coil spring by the operation of the component pushing mechanism unit 14. Thereby, the leading component in the stick S is pushed out to the component transporting unit 16. As shown in FIG. 3, the extruded component P is supported by both guide rails 35 (component support portions 37 a), and is transported along the guide rails 35 as the transport belt 42 moves around. At this time, the component P is intermittently transported, for example, by repeatedly driving and stopping the transport belt 42 in synchronization with the timing of removing the component P by the head 8a.

  When the component P reaches the distal end portion of the guide rail 35, as shown by a two-dot chain line in FIG. 4, the component P falls into the component extracting portion 40 while being pushed from the first region Ta to the second region Tb. It is held by the component take-out part 40. At this time, the part P and the conveyor belt 42 are in a non-contact state at a position upstream of the part take-out part 40, but the part P moves on the part support part 37a by inertia force and Will be depressed.

  When a plurality of components P are continuously conveyed on the guide rail 35, that is, when the front and rear components P are conveyed along the guide rail 35 in a state where they are in contact with each other, the leading component P is transferred to the component extraction unit 40. After the moving feed operation, the separation operation for separating the leading component P and the following component P is performed by driving the transport belt 42 in the direction opposite to the transport direction. As a result, the subsequent component P is cut off from the leading component P while the leading component P is kept on standby by the component extracting unit 40.

  Then, the component P thus arranged in the component extracting section 40 is sucked by the head 8a and is extracted from the stick feeder 7.

  According to the stick feeder 7 described above, the component take-out section 40 is provided at a position where the transport belt 42 and the component P are not in contact with each other, and the leading component P is removed by performing the above-described separating operation. The leading part P and the succeeding part P are separated from each other while the part extracting unit 40 is kept on standby. Therefore, the leading part P and the succeeding part P can be separated without using a magnet as in the related art. Therefore, according to the stick feeder 7, even for the non-magnetic component, the leading component P and the succeeding component P of the component extracting unit 40 can be appropriately separated, thereby increasing the degree of freedom of usable components. Can be.

  In addition, since the component P of the component pick-up unit 40 is not in contact with the transport belt 42, for example, when the transport belt 42 is driven to perform component replenishment with the component pick-up unit 40 waiting for the final component P. However, the components P of the component take-out section 40 and the transport belt 42 do not rub for a long period of time, and it is possible to prevent the inconvenience that the components P and the transport belt 42 are damaged by friction. Therefore, it is possible to perform component replenishment in a state where the final component P is in a standby state in the component extraction unit 40, and thereby the component P can be supplied more efficiently.

  In the stick feeder 7, the guide rail 35 is extended to a position downstream of the center position of the pulley 44 in the component transport direction, that is, above a portion where the traveling direction of the transport belt 42 is reversed. Is provided with the component take-out section 40, so that the leading component P can be made to stand by in a non-contact state with respect to the transport belt 42. Therefore, there is also an advantage that the leading component P can be made to stand by in a non-contact state with the transport belt 42 with a very simple configuration.

  Further, according to the stick feeder 7, since the component take-out portion 40 is a concave portion that holds the component P in a dropped state, it is possible to effectively prevent the component P in a standby state from falling. A similar function is exerted by the stopper 46. Therefore, according to the stick feeder 7, there is also an advantage that a suction error of the head 8a due to the falling of the component P can be effectively reduced.

  Note that the stick feeder 7 described above is an example of a preferred embodiment of the component supply device according to the present invention, and its specific configuration can be appropriately changed without departing from the gist of the present invention.

7 Stick feeder (part supply device)
12 stick support section 14 component pushing mechanism section 16 component transport section 35 guide rail (guide member)
40 Parts take-out part P parts Ta 1st area Tb 2nd area

Claims (6)

A component supply device that supplies components while transporting the components,
A guide member extending parallel to each other in the component transport direction and comprising a pair of guide rails each of which guides both ends of the component while supporting it from below and from the side thereof , and having a component take-out portion at a predetermined position;
A conveyance belt disposed along the guide rail between the pair of guide rails and moving a part supported on the guide rail,
The pair of guide rails is located on a first area where the component supported on the guide rail and the transport belt are in contact with each other, and is located downstream of the first area in the transport direction , and is supported on the guide rail. And a second region where the conveyed belt and the conveyed belt are out of contact with each other, and having the component take-out portion in the second region. The component supply device according to claim 1,
The component supply device according to claim 1, wherein the second region corresponds to a portion of the transport belt, the traveling direction of which is reversed in the opposite direction from the transport direction. The component supply device according to claim 1 or 2,
The component supply device, wherein the component extraction unit has a holding structure for holding the component. The component supply device according to claim 3,
The pair of guide rails has a horizontal guide surface for guiding a component,
The component supply device, wherein the component extraction unit is a concave portion that is recessed downward from the guide surface and holds the component in a dropped state. In the component supply device according to any one of claims 1 to 4,
A component supply device, comprising: a stopper that regulates movement of a component that has reached the component extraction unit in the transport direction. The component supply device according to any one of claims 1 to 5,
A control device for controlling the driving of the transport belt,
The control device drives the transport belt in the transport direction to move a leading component to the component take-out unit; and, after this transport operation, drives the transport belt in a direction opposite to the transport direction. A component supply device for executing a separating operation for separating a leading component from a succeeding component.

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