JP2018111173A - Lead cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lead cutting device capable of facilitating replacement of a cutting blade for cutting a lead of a component.SOLUTION: A lead cutting device 20 has one of two levers 46 and 48 provided with a cutting blade 50, and has the other one provided with a part 56 for pinching a lead. The lead cutting device cuts the lead by interlocking the two levers with each other. A jig 80 for relatively rotating the two levers is attached for replacement of the cutting blade. The use of the jig prevents the replacement of the cutting blade from being hindered by the part for pinching the lead during the replacement. Thus, the cutting blade can be easily replaced.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a lead cutting device used in a component feeder that supplies a component one by one while cutting the plurality of leads from a taped component in which a plurality of leads extend in one direction.

  A part in which a plurality of leads extend in one direction, a so-called radial part, is supplied in the form of a taped part in which the part is held by a carrier tape in the lead. A so-called radial component feeder (hereinafter sometimes simply referred to as “component feeder”) is used to supply components from the taped components one by one at the supply position. Such a component feeder includes, for example, a lead cutting device for separating the component from the carrier tape, as shown in the following patent document.

JP 2016-28452 A

  The lead cutting apparatus as described in the above-mentioned patent document has a cutting blade for cutting the lead, and the cutting blade is a consumable item in a sense and is required to be replaced. However, for example, in a lead cutting device having a mechanism for holding and fixing the lead at a location closer to the component body than the cutting location for proper cutting of the lead, the mechanism is obstructive. There is a problem that the cutting blade cannot be easily replaced. This invention is made | formed in view of such a situation, and makes it a subject to provide the lead cutting device which can perform replacement | exchange of a cutting blade easily.

In order to solve the above problems, the lead cutting device of the present invention is:
A lead cutting device in which a cutting blade is provided on one of the two levers and a portion for holding a lead is provided on the other, and the two levers are interlocked to perform cutting. A jig for rotating the two levers relative to each other is attached.

  According to the lead cutting device of the present invention, by using the jig, the portion holding the lead does not interfere with the replacement of the cutting blade, so that the cutting blade can be easily replaced. Become.

It is a figure which shows the components supplied by the components feeder by which the lead cutting device of the Example was arrange | positioned, and the taped components by which the components were taped. It is a perspective view which shows the external appearance of the components feeder by which the lead cutting device of the Example was arrange | positioned. It is a perspective view which shows the lead cutting device of an Example in the state which removed the exterior. It is a perspective view which shows the component pressing device which comprises the component feeder by which the lead cutting device of the Example was arrange | positioned. It is a perspective view which shows the lead cutting device of an Example. It is a perspective view which expands and shows the principal part of the lead cutting device of an Example. FIG. 6B is a view from the opposite side of FIG. It is sectional drawing which shows the principal part of the lead cutting device of an Example from the viewpoint from the front. It is sectional drawing which shows the principal part of the lead cutting device of an Example in the state which performed the cutting | disconnection operation | movement from the viewpoint from the front. It is a figure which shows typically the place using the blade exchange jig attached to the lead cutting device of an Example.

  Hereinafter, an example of a lead cutting device according to an embodiment of the present invention will be described in detail with reference to the drawings. It should be noted that the present invention can be implemented in various forms in which various modifications and improvements are made based on the knowledge of those skilled in the art, in addition to the following examples.

  A component from which a lead is cut by the lead cutting device of the embodiment, that is, a component P supplied from a component feeder provided with the lead cutting device of the embodiment, is, for example, as shown in FIG. A plurality of leads Le (two leads Le in the figure, hereinafter referred to as parts having two leads Le) extend in the direction (downward in the figure) and are held by the carrier tape CT. Supplied as taped parts TP. The component P is held on the carrier tape CT at an equal pitch p1, and the carrier tape CT has feed holes FH formed at a pitch p2 equal to the pitch p1. The component P is supplied by cutting the lead Le at the position of the cutting line Cu indicated by a broken line in the drawing.

  The component feeder 10 provided with the lead cutting device of the embodiment is as shown in FIG. If the left side in the figure is the front, the right side is the rear, the right side (the front side in the figure) is the right side, and the left side (the back side in the figure) is the left side. The component P is intermittently sent with the component P facing upward, and the component P located at the component supply position SS shown in the figure is separated from the carrier tape CT by cutting the lead Le, and the component supply position Supplied at SS. The component feeder 10 is provided in a component mounting machine (also referred to as a “component insertion machine”), and the component mounting machine has a component holding head that the component feeder 10 has separated at the component supply position SS. That is, the component P supplied one by one by the component feeder 10 is held, and the component P is mounted on the substrate held by the substrate holding device.

  As shown in FIG. 3 with the exterior removed, the component feeder 10 includes a guide rail 12 that guides the taped component TP from the rear to the front, and serves as a main body (feeder main body) of the component feeder 10. The frame 14 includes a feeding device 16, a component pressing device 18, and a lead cutting device 20 each supported by the base frame 14. This lead cutting device 20 is the lead cutting device of the embodiment.

  The feeding device 16 inserts the claw 22 into a feeding hole FH drilled in the carrier tape CT, and moves the claw 22 forward by a pitch p1 (p2). It is configured to send only the pitch p1. Since the drive source serves as the lead cutting device 20 described later, the feeding device 16 and the lead cutting device 20 are operated in synchronization. Since the structure of the feeding device 16 is general, detailed illustration and description of the structure are omitted.

  The component pressing device 18 is a device for pressing the component P when cutting the lead Le of the component P positioned at the component supply position SS. As shown in FIG. 4, the component pressing device 18 includes an air cylinder 24, a backup block 26, a V block 28, and a link mechanism 30 serving as a drive source. The air cylinder 24 connects the V block 28 to the link mechanism. The component main body PB of the component P is pressed against the backup block 26 by the V block 28 by moving toward the backup block 26 through 30. Since the component pressing device 18 is not closely related to the present invention, the description of the component pressing device 18 will be limited to this level.

  As shown in FIG. 5, the lead cutting device 20 is fixedly supported by an air cylinder 40 as a driving source, a support block 42 fixedly disposed on the base frame 14, and a position adjustable by the support block 42. The fixed member 44 is configured to include a first lever 46 and a second lever 48 that are held by the base frame 14 via a support block 42 so as to be rotatable about a rotation axis L. Incidentally, the 2nd lever 48 is produced by sheet metal processing.

  6A and 6B, which are enlarged perspective views of the main part of the lead cutting device 20, and FIG. 7 which is a cross-sectional view seen from the front side. For example, in the component feeder 10, the taped component TP passes between the first lever 46 and the second lever 48 and the support block 42 and the fixing member 44. The tip blade 50 is attached to the upper end portion of the tip blade 50 by means of a hexagon socket head bolt 52 as a fastening material, and the right end of the tip blade 50 has a movable blade 54 (cutting blade) for cutting the lead Le of the component P. A kind). The upper end portion of the second lever 48 is a clamping portion 56 for clamping the lead Le of the component P above the movable blade 54. On the other hand, the fixed member 44 is a member having a L-shaped cross section, and a fixed blade 58 for cutting the lead Le of the component P by the movable blade 54 at the lower portion at the left end (a kind of cutting blade). The entire left end is a clamping part 60 for clamping the lead Le of the component P by the clamping part 56 provided on the second lever 48 above the fixed blade 58.

  The lead cutting device 20 has a support plate 62 fixed to the base frame 14, and the movable blade 54 fixes the first lever 46 between the support plate 62 and the first lever 46. A compression coil spring 64 that is a first urging member that urges in a direction away from the blade 58 (a direction in which the first lever 46 rotates counterclockwise in FIG. 7) is disposed, and a support plate 62 and Between the second lever 48, the second lever 48 is tension coil as a second urging member that urges the clamping portion 56 of the second lever 48 in a direction approaching the clamping portion 60 of the fixing member 44. A spring 66 is disposed. The state shown in FIG. 7 shows a state before the cutting operation by the lead cutting device 20 is performed, and the rotational force acting on the first lever 46 by the urging force of the compression coil spring 64 is applied to the tension coil spring 66. Since the rotational force acting on the second lever 48 is increased by the force, in this state, the movable blade 54 is positioned at the retracted position away from the fixed blade 58 by the biasing force of the compression coil spring 64. While the first lever 46 is positioned, the second lever 48 is locked to the first lever 46 by the urging force of the tension coil spring 66, and the holding portion 56 of the second lever 48 is also held by the holding portion 60 of the fixing member 44. It is located in the retreat position separated from. Incidentally, the support plate 62 is provided with a locking portion 68 serving as a stopper for the first lever 46 and the second lever 48, and before the cutting operation is performed, the second lever 48 is directly or directly The first lever 46 is locked to the locking portion 68 via the second lever 48, and the movable blade 54 and the clamping portion 56 of the second lever 48 are both in the retracted position.

  A roller 70 that functions as a cam follower is attached to the lower end of the first lever 46. On the other hand, as will be understood with reference to FIG. 5, the lead cutting device 20 is provided with a cam block 72 that is advanced and retracted by the air cylinder 40 (see FIG. 5), and the left side surface of the cam block 72. Functions as a cam surface, and the roller 70 is engaged with the surface. When the cutting operation is performed, the cam block 72 is advanced by the air cylinder 40. That is, the first lever driving mechanism 74 that rotates the first lever 46 is configured including the air cylinder 40, the cam block 72, and the roller 70.

  As the cam block 72 advances, a cutting operation is performed, and the state shifts to the state shown in FIG. 7 and 8, the first lever 46 is first rotated by the first lever driving mechanism 74 in the clockwise direction in the drawing, so that the first lever 46 and the second lever 48 are rotated. However, the second lever 48 is rotated while maintaining the state where the second lever 48 is locked to the first lever 46, and the holding portion 56 of the second lever 48 and the holding portion 60 of the fixing member 44 hold the lead Le. Later, only the first lever 46 is further rotated, and the cutting of the lead Le by the movable blade 54 and the fixed blade 58 is performed at a location below the location sandwiched by the two sandwiching portions 56 and 60.

  Since the cutting blade is worn by long-term use, it is treated as a consumable and is used for replacement. In particular, since the movable blade 54 has a sharp point, the wear is relatively large, and the frequency of replacement is higher than that of the fixed blade 58. When replacing the movable blade 54, the hexagon socket head cap bolt 52 is removed. However, as can be seen from FIGS. 7 and 8, when both the movable blade 54 and the holding portion 56 of the second lever 48 are located at the retracted position, the upper portion of the movable blade 54 is the holding portion 56 of the second lever. When exchanging, the movable blade 54 is exposed from the holding portion 56 as viewed from above by rotating only the first lever 46 while keeping the holding portion 56 in the retracted position. The state to do must be realized. The realization of this state involves difficulties.

  In view of the above difficulties, the lead cutting device 20 is provided with a blade replacement jig 80 as shown in FIG. 9 for replacing the movable blade 54. The blade replacement jig 80 has a male screw rod portion 84 in which a male screw 82 is formed from a tip to a certain region, and a handle portion 86 attached to the rear end of the male screw rod portion 84. A hole is formed in the back surface of the second lever 48, and a nut 88 that functions as a female screw hole is attached to the hole portion. The blade replacement jig 80 is used by screwing the male threaded rod portion 84 into the nut 88 from the tip, and turning the handle portion 86 to screw it. The male threaded rod portion 84 passes through the nut 88 and projects toward the first lever 46 while being locked to the second lever 48 by the nut 88, and the tip abuts against the back surface of the first lever. That is, the distal end portion of the male screw rod portion 84 functions as a protruding portion, and rotates the first lever 46 with respect to the second lever 48 by increasing the protruding margin.

  By increasing the protrusion allowance, the second lever 48 is moved to the position where the holding portion 56 is located at the retracted position as shown in FIG. 9 due to the difference in urging force between the compression coil spring 64 and the tension coil spring 66. In this state, the movable blade 54 can be positioned to the position where the lead Le is cut by the fixed blade 58. In a state where the movable blade 54 is positioned up to that position, the movable blade 54 is exposed to the clamping portion 56, and in this state, the movable blade 54 can be easily replaced.

  The replacement of the movable blade 54 by the blade replacement jig 80 can be performed manually, is very simple, and does not require any power source. Further, there is no danger that the cutting blade will operate unnecessarily when another power source is used. Furthermore, since both hands of the operator who performs the replacement work are free, the replacement workability is good.

  In the lead cutting device 20, the fixing member 44 is fixed to the support block 42 by a bolt 90 that is a fastening material, and by loosening the bolt 90, the position of the fixed blade 58 provided on the fixing member 44. Adjustment, more specifically, it is possible to adjust the clearance of the fixed blade 58 relative to the movable blade 54 in cutting the lead Le. In the state shown in FIG. 9, it is possible to replace the movable blade 54 and adjust the position of the fixed blade 58 with respect to the replaced movable blade 54 continuously, and the workability of the adjustment work is also improved. It is good. Those are also the merits of using the blade replacement jig 80.

  10: parts feeder 14: base frame [feeder body] 20: lead cutting device 40: air cylinder 42: support block 44: fixing member 46: first lever 48: second lever 50: tip blade 52: hexagon socket head bolt [ Fastening material] 54: Movable blade 56: Clamping portion (of the second lever) 58: Fixed blade 60: Clamping portion (of the fixing member) 62: Support plate 64: Compression coil spring [first biasing member] 66: Tension coil Spring (second urging member) 68: Locking portion 70: Roller 72: Cam block 74: First lever drive mechanism 80: Blade replacement jig 82: Male screw 84: Male screw rod portion [protruding portion] 86: Handle 88: Nut [Female thread hole] 90: Bolt P: Parts Le: Lead CT: Carrier tape TP: Tape parts

Claims (6)

A lead cutting device used in a component feeder that supplies a component from a taped component in which a plurality of leads extend in one direction while cutting the plurality of leads one by one,
A first lever rotatably held by a feeder body which is a body of the component feeder;
A movable blade for cutting at least one of the plurality of leads attached to the upper end of the first lever in a replaceable manner with a fastening material;
A second lever that is rotatably held by the feeder body and has a clamping portion for clamping the at least one lead above the movable blade at an upper end portion;
The first lever and the second lever are fixed to the feeder body so as to face each other with a component held by the taped component interposed therebetween, and (a) the at least one lead is cut by the movable blade. A fixed member provided with a fixed blade, and (b) a clamping part that clamps the at least one lead by the clamping part of the second lever above the fixed blade;
A first biasing member that biases the first lever in a direction in which the movable blade is separated from the fixed blade;
A second urging member that urges the second lever in a direction in which the clamping portion of the second lever approaches the clamping portion of the fixing member;
A first lever drive mechanism for rotating the first lever in a direction toward the fixed blade against the urging force of the first urging member;
Before the cutting operation of the at least one lead by the lead cutting device, the first lever is moved to the retracted position where the movable blade is separated from the fixed blade by the biasing force of the first biasing member. The second lever is locked to the first lever by the biasing force of the second biasing member, and the clamping portion of the second lever is also It is located at a position that is located at a retracted position that is separated from the clamping part,
When the cutting operation of the at least one lead is performed by the lead cutting mechanism, the first lever is rotated by the first lever driving mechanism, so that the first lever and the second lever are moved. The second lever rotates together with the first lever locked, and the clamping portion of the second lever and the clamping portion of the fixing member clamp the at least one lead. Only the first lever is further rotated, and the cutting of the at least one lead by the movable blade and the fixed blade is performed at a location below the location clamped by the two clamping portions. As
In the lead cutting device,
Used when the movable blade is replaced, the second lever is unlocked by the first lever by the biasing force of the second biasing member, and the first lever is moved with respect to the second lever. A lead cutting device comprising a blade changing jig for rotating. The blade replacement jig is
Locked to the second lever,
A protrusion having a protrusion protruding toward the first lever and having a tip abutting against the first lever, and increasing the protrusion margin of the protrusion, thereby rotating the first lever relative to the second lever. The lead cutting device according to claim 1 configured as described above. A female screw hole is provided in the second lever,
The blade replacement jig has a male threaded rod portion screwed into the female threaded hole, and the male threaded rod portion penetrates the female threaded hole and the tip abuts on the first lever. The lead cutting device according to claim 2, wherein the lead cutting device is configured to function. The blade replacement jig is
The movable blade is configured to be able to be positioned up to a position where the at least one lead is cut by the fixed blade in a state where the clamping portion of the second lever is positioned at the retracted position. The lead cutting device according to any one of claims 1 to 3. In a state where both the movable blade and the sandwiching portion of the second lever are located at the retracted position, the upper portion of the movable blade is covered by the sandwiching portion of the second lever,
The blade replacement jig is
5. The structure according to claim 1, wherein the first lever is rotated with respect to the second lever so that the movable blade is exposed from the clamping portion of the second lever as viewed from above. The lead cutting device according to any one of the above.   The said fixing member is being fixed to the said feeder main body so that the position with respect to the said movable blade of the said fixed blade at the time of the cutting | disconnection of the said at least 1 lead | read | reed is adjustable. The lead cutting device according to the description.

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