JP3861694B2 - Electronic component mounting equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic component mounting apparatus for mounting electronic components on a substrate.
[0002]
[Prior art]
As a method for supplying an electronic component in an electronic component mounting apparatus, a method using a tape feeder is known. In this method, an electronic component such as a semiconductor chip held at a constant pitch is stored in a state wound around a supply reel, and the electronic component is transferred by a transfer head by unwinding the tape during mounting. It is supplied to the pickup position. The empty tape after the electronic component is picked up is sent out from the tape feeder by continuously feeding the tape at a constant pitch.
[0003]
The empty tape is discharged from the end of the tape feeder and then guided by a chute, cut by a tape cutting unit disposed below the feeder base, and collected in a collection box. This tape cutting unit generally includes a cutting blade that sandwiches and cuts an empty tape, and driving means such as a cylinder that drives the cutting blade, and is fastened and fixed to a fixed mounting surface by a fastening means such as a bolt.
[0004]
[Problems to be solved by the invention]
By the way, in order to cut the empty tape without any trouble, it is necessary that the cutting edges of the two cutting blades of the cutting unit perform a cutting operation with an appropriate gap between the cutting edges. For this reason, at the time of assembling the tape cutting unit, the blade edge is adjusted for the alignment of the two cutting blades. However, even with a tape cutting unit that has been adjusted in this way, the tape cutting unit may be deformed due to poor flatness of the mounting portion or the like when mounted and fixed on an electronic component mounting apparatus. It is easy for problems to occur. That is, since fastening with bolts is used to fix the tape cutting unit, if the mounting surface has poor planar accuracy, external force such as torsion acts on the tape cutting unit, and the cutting edge position of the cutting blade is distorted. Arise. If cutting is performed with the blade tip position being defective, problems such as cutting failure and blade tip breakage have been caused.
[0005]
Then, an object of this invention is to provide the electronic component mounting apparatus which can cut | disconnect an empty tape efficiently without a malfunction.
[0006]
[Means for Solving the Problems]
The electronic component mounting apparatus according to claim 1 is an electronic component mounting apparatus that picks up an electronic component from a component supply unit by a transfer head and transfers the electronic component onto a board, and holds the electronic component arranged in the component supply unit. A plurality of tape feeders that feed electronic components to a pickup position by a transfer head by pitch-feeding the tape, and empty tapes discharged from these tape feeders are sandwiched by two cutting blades that are long in the tape feeder arrangement direction. comprising a tape cutting unit for cross and a support means for supporting the tape cutting unit fixed mounting portion, said support means includes a retaining bracket secured to the stationary mounting portion, the tape on the upper surface of the holding bracket The cutting unit is composed of a bolt, a washer, and a fastening portion that is elastically fastened by an elastic buffer member. And to support the three lower surface in the longitudinal direction of the cutting blade of the tape cutting unit.
[0007]
According to the present invention, the tape cutting unit that sandwiches the empty tape discharged from the tape feeder with the two cutting blades is supported by the fixed mounting portion via the elastic buffer member, thereby allowing the tape cutting unit to The action of an external force that causes deformation can be eliminated, and the cutting edge position of the cutting blade can be maintained correctly.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. 1 is a perspective view of an electronic component mounting apparatus according to an embodiment of the present invention, FIG. 2 is a partial side sectional view of the electronic component mounting apparatus according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. FIG. 4 and FIG. 5 are explanatory views of the tape cutting unit mounting structure of the electronic component mounting apparatus according to the embodiment of the present invention.
[0009]
First, the structure of the electronic component mounting apparatus will be described with reference to FIGS. In FIG. 1, a transport path 2 is disposed on a base 1, and the transport path 2 transports a substrate 3 and positions it at an electronic component mounting position. A component supply unit 4 is disposed on the side of the conveyance path 2, and a plurality of tape feeders 5 are arranged in the component supply unit 4. The tape feeder 5 feeds the electronic component to the pickup position by the transfer head 6 by pitch-feeding the tape holding the electronic component.
[0010]
The transfer head 6 is provided with a suction nozzle 6a for sucking and holding electronic components, and is moved in the horizontal direction by an X-axis table 7 (see FIG. 2) and a Y-axis table (not shown), and the tape feeder 5 is moved by the suction nozzle 6a. The electronic component is taken out from the pick-up position and transferred and mounted on the substrate 3. A camera 9 is arranged between the component supply unit 4 and the conveyance path 2, and the transfer head 6 moves above the camera 9 to pick up an image of the electronic component held by the transfer head 6 from below. . By recognizing the imaging result, the position of the electronic component is recognized. When the electronic component is mounted on the substrate 3 by the transfer head 6, the mounting position is corrected based on the position recognition result.
[0011]
Next, the component supply unit 4 will be described. The component supply unit 4 includes a feeder base 4a, and a plurality of tape feeders 5 are mounted on the feeder base 4a. A discharge duct 10 is provided in front of the front end of the tape feeder 5 (on the side of the conveyance path 2 in FIG. 1) to guide the empty tape after the electronic components are taken out.
[0012]
As shown in FIG. 2, the discharge duct 10 is a duct having a shape having a wide opening on the upper surface and the width being narrowed downward. The tape feeder 5 mounted on the feeder base 4a is provided with a supply reel 5b for storing a tape holding electronic components in a wound state. The tape drawn from the supply reel 5b is directed forward in the main body 5a. Be guided. Then, the empty tape T after the electronic component is taken out by the suction nozzle 6a of the transfer head 6 at the pickup position is discharged from the tape feeder 5 and guided downward in the discharge duct 10.
[0013]
A tape cutting unit 11 is disposed on the outlet side of the lower portion of the discharge duct 10. The tape cutting unit 11 cuts the empty tape T guided by the discharge duct 10 into strips. A recovery box 12 is provided below the tape cutting unit 11, and the empty tape T cut by the tape cutting unit 11 is dropped and recovered in the recovery box 12.
[0014]
Next, the structure of the tape cutting unit 11 will be described with reference to FIG. The tape cutting unit 11 includes two cutting blades, a fixed blade 12 and a movable blade 13. The fixed blade 12 is fixed to the fixed bracket 12a, and the movable blade 13 is fixed to a holding member 13a coupled to the cylinder 14 (see also FIG. 4A). By driving the cylinder 14, the movable blade 13 reciprocates with respect to the fixed blade 12. The empty tape T is cut by reciprocating the movable blade 13 in a state where the empty tape T is held between the blade edge of the fixed blade 12 and the blade edge of the movable blade 13.
[0015]
Next, the attachment structure of the tape cutting unit 11 will be described with reference to FIG. As shown in FIG. 4A, the tape cutting unit 11 is attached to a fixed attachment portion provided on the vertical side surface 1 a of the base 1. A vertical fixing member 15 a coupled to the holding bracket 15 is fixed and fastened to the fixed mounting portion by a bolt 16, and the tape cutting unit 11 is elastically fastened to the upper surface of the holding bracket 15 by a fastening portion 17.
[0016]
The fastening portion 17 includes a bolt 17a, a metal washer 17b, and a rubber cushion 17c that is an elastic buffer member. At the time of fastening, the bolt 17 a is inserted through the mounting hole 15 b provided in the holding bracket 15 and screwed into the tape cutting unit 11. The tape cutting unit 11 is elastically fastened to the holding bracket 15 by tightening the bolts 17a.
[0017]
That is, the fastening part 17 provided with the rubber cushion 17c, the holding bracket 15, the fixing member 15a, and the bolt 16 serve as support means for supporting the tape cutting unit 11 on the fixed attachment part via an elastic buffer member. In addition to the rubber cushion 17c, a material rich in elasticity or a mechanical component such as an elastomer material other than rubber or a spring member having an appropriate spring coefficient may be used as the buffer member.
[0018]
FIG. 4B shows the lower surface of the tape cutting unit 11 supported by the fixed mounting portion. The tape cutting unit 11 is based on three places on the lower surface in the longitudinal direction of the cutting blades (the fixed blade 12 and the movable blade 13) that are long in the arrangement direction of the tape feeder 5 via the fastening portion 17, the holding bracket 15 and the fixing member 15a. The three-point support state is supported by the side surface 1 a of the table 1. Thus, so that the elongated tape cutting unit 11 of which have a long cutting blade in the arrangement direction of the tape feeder 5 can be supported with good balance.
[0019]
In this tape cutting unit 11 mounting structure, the tape cutting unit 11 is elastically fastened to the holding bracket 15 via the rubber cushion 17c, so that even if the plane accuracy of the fixed mounting portion of the side surface 1a is poor, the tape A large external force such as twisting does not act on the cutting unit 11. Therefore, after attaching the tape cutting unit 11 whose blade edge has been adjusted at the time of assembly to the electronic component mounting apparatus, the blade edge position between the fixed blade 12 and the movable blade 13 does not get out of order, and defects such as cutting failure and blade edge damage. Will not occur.
[0020]
As shown in FIG. 5, the mounting structure of the tape cutting unit 11 is provided with a fixed mounting portion on the upper surface 1b of the base 1, and the horizontal fixing member 15'a is a fastening portion 17 similar to that shown in FIG. Thus, the base 1 may be elastically fastened. In this case, the holding bracket 15 ′ combined with the fixing member 15 ′ a is fixed to the tape cutting unit 11. Even with this mounting structure, the same effect as in the example shown in FIG. 4 can be obtained even when the planar accuracy of the fixed mounting portion is poor.
[0021]
【The invention's effect】
According to the present invention, the tape cutting unit that sandwiches the empty tape discharged from the tape feeder with the two cutting blades is supported by the fixed mounting portion via the elastic buffer member, thereby allowing the tape cutting unit to The action of an external force that causes deformation can be eliminated, and the cutting edge position of the cutting blade can be maintained correctly.
[Brief description of the drawings]
FIG. 1 is a perspective view of an electronic component mounting apparatus according to an embodiment of the present invention. FIG. 2 is a partial side sectional view of the electronic component mounting apparatus according to an embodiment of the present invention. FIG. 4 is a plan view of the tape cutting unit of the electronic component mounting apparatus according to the embodiment. FIG. 4 is an explanatory view of the mounting structure of the tape cutting unit of the electronic component mounting apparatus according to the embodiment of the invention. Of the mounting structure of the tape cutting unit of the electronic component mounting equipment in Japan [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base 3 Board | substrate 4 Component supply part 5 Tape feeder 6 Transfer head 11 Tape cutting unit 12 Fixed blade 13 Movable blade 15 Holding bracket 15a Fixing member 17 Fastening part 17a Bolt 17b Washer 17c Rubber cushion T Empty tape

Claims (1)

An electronic component mounting apparatus that picks up an electronic component from a component supply unit by a transfer head and transfers it to a substrate, and transfers the electronic component by pitch-feeding a tape that is arranged in the component supply unit and holds the electronic component. A plurality of tape feeders to be supplied to a pick-up position by the mounting head, a tape cutting unit for sandwiching an empty tape discharged from these tape feeders with two cutting blades long in the direction of arrangement of the tape feeder, and the tape cutting unit the a fixed mounting portion supporting means for supporting the said support means includes a retaining bracket secured to the stationary mounting portion, the bolt, the tape cutting unit to the upper surface of the holding bracket, the washer, the elastic buffer It consists of a fastening part that is elastically fastened by a member, and the cutting of the tape cutting unit by the support means Electronic component mounting apparatus is characterized in that so as to support the three lower surface in the longitudinal direction of.

Images