JPH0723138B2 - Parts centering device for taping machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component centering device for centering an electronic component in a taping mechanism for an axial lead type electronic component, based on the element reference of the electronic component during taping.

[Prior Art] Conventionally, as a parts centering device, for example, Japanese Patent Application Laid-Open No. 59-
No. 25300 (hereinafter referred to as Conventional Example 1) and JP-A-59-2.
What is disclosed in Japanese Patent Publication No. 02699 (hereinafter referred to as Conventional Example 2) is known.

In the first conventional example, a pair of fixed guide pieces whose inlet side portions are widened are arranged, and the element portion of the electronic component is passed between the guide pieces for centering.

The conventional example 2 includes a pair of guide pieces that are swingably mounted,
It is composed of a pair of gears fixed to the guide pieces so as to mesh with each other, and a spring for urging the pair of guide pieces in a closing direction. When the element portion of the electronic component is passed between the guide pieces, the guide pieces are pushed open to perform centering.

[Problems to be Solved by the Invention] In Conventional Example 1, the gap between the pair of guide pieces needs to be widened in consideration of the variation in the length of the element, so that the variation in the centering occurs accordingly. Further, it cannot be used when taping is performed by mixing a plurality of electronic components having different element lengths.

In this respect, in Conventional Example 2, since the pair of guide pieces can be opened and closed,
The problem as in Conventional Example 1 is solved. However, in the conventional example 2, since the electronic components pass through the pair of guide pieces in the closed state, the guide pieces are opened by the biasing force of the spring after the element portion passes between the pair of guide pieces. It will be closed. Therefore, unless the pair of guide pieces are simultaneously removed from the element, the guide pieces will move the electronic parts in reverse. For example, when there are variations in the diameter of both ends of the element, one guide piece that is in contact with the element end surface of a small diameter will separate quickly, so the other guide piece will move the electronic component to the one guide piece side. On the contrary, when it was moved, and in some cases, electronic parts were skipped and taping was performed, it was out of stock.

An object of the present invention is to provide a component of a taping machine capable of reliably and highly accurately centering electronic components having variations in element length and different lengths, and electronic components having different diameters at both ends of the element. It is to provide a centering device.

[Means for Solving the Problems] The problems of the above-described conventional technology are as follows: a component transport mechanism that supports and transports the lead wire of an axial lead type electronic component; and a component transport mechanism disposed above the component transport mechanism. A pair of centering claws provided with a narrow groove for loosely fitting the lead wire, a claw vertical movement mechanism for lowering the pair of centering claws to loosely fit the narrow groove on the lead wire, and a pair of centering claws for lowering This is solved by a claw opening / closing mechanism that opens and closes in a direction parallel to the axis of the lead wire at the above position.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. The component transfer drum 2 for transporting the electronic component 1 is rotatably supported by the machine frame 3, a groove 2a wider than the element 1a of the electronic component 1 is formed in the central portion, and the lead wire of the electronic component 1 is formed on the outer periphery. Grooves 2b supporting 1b are formed at regular intervals, and are driven in the direction of arrow A by a driving means (not shown).

Above the component transport drum 2, two guide rods 4,
5 is arranged in parallel with the axis of the lead wire 1b of the electronic component 1, and the guide rods 4 and 5 are attached to a support frame 6 fixed to the machine frame 3 and a support plate 7 fixed to the support frame 6. It is fixed. 2 for the guide rods 4 and 5
Sliding pieces 8 and 9 are slidably arranged, and vertically moving rods 10 and 11 are respectively arranged on the sliding pieces 8 and 9 via bearings 12 so as to be vertically movable. . Centering claws 13 and 14 are fixed to the lower ends of the vertical moving rods 10 and 11, respectively, and fine grooves 13a and 14a are formed at the lower ends of the centering claws 13 and 14 so as to loosely fit into the lead wire 1b. The vertical moving rods 10 and 11
The upper ends of the connecting levers 15 and 16 are rotatably connected to the lower ends of the connecting levers 15 and 16, and the upper ends of the connecting levers 15 and 16 are connected to one end of a swing lever 17. The swing lever 17 is swingably supported by the support frame 6, and a cam follower 18 is rotatably attached to the other end.

A pulley support plate 20 is fixed to the guide rods 4 and 5, and pulleys are attached to the pulley support plate 20 and the support plate 7, respectively.
21 and 22 are rotatably supported. The pulleys 21, 22
A flexible strip 23 such as a belt or a wire is wound around the flexible strip 23. The flexible strip 23 is wound around the guide rollers 24 and 25 so as to be parallel to the guide rods 4 and 5. There is. The pair of sliding pieces 8 and 9 are fixed to the flexible strip 23 at the point-symmetrical positions indicated by the X mark 27. A cam follower 26 is rotatably attached to the pulley 22.

On the other hand, the cam shaft 30 rotated by a driving means (not shown) has a pawl vertical movement cam 31 for vertically moving the vertical movement rods 10 and 11.
Also, a pawl opening / closing cam 32 for reciprocating the flexible strip 23 is fixed. The swing lever 17 is urged by a spring 33 so that the cam follower 18 is pressed against the pawl vertical movement cam 31. The pulley 22 is biased by a spring 34 so that the cam follower 26 is pressed against the pawl opening / closing cam 32.

Next, the operation will be described. Before operation, centering claw
13 and 14 are in the raised position and open. And
When the component transport drum 2 is driven intermittently, the electronic component 1 whose lead wire 1b is supported by the component transport drum 2 is sent between the centering claws 13 and 14 and stopped. Then camshaft 30
First, the swing lever 17 is rotated counterclockwise in FIG. 1 by the profile of the pawl vertical movement cam 31, and the connecting levers 15 and 16 are pushed down. As a result, the vertical moving rods 10, 11
Slides in the sliding pieces 8 and 9 and descends, and the centering claw 1
The thin grooves 13a and 14a of 3 and 14 are loosely fitted to the lead wire 1b. Then, the pulley 22 is rotated in the direction of the arrow B by the profile of the pawl opening / closing cam 32, and the sliding pieces 8 and 9 are moved along the guide rods 4 and 5 via the flexible strip 23 in the directions to close each other. . As a result, the element 1a portion of the electronic component 1 is moved to the centering claws 13 and 14
And the electronic component 1 is centered.

After that, contrary to the above, first, the pulley 22 is rotated in the direction opposite to the arrow B direction by the profile of the pawl opening / closing cam 32, and the sliding pieces 8 and 9 are opened via the flexible strip 23. Move to. Then, the swing lever 17 is rotated in the clockwise direction opposite to the above by the profile of the pawl up-and-down movement cam 31, and the connecting lever 1
Centering pawls 13, 1 via 5, 16 and vertical moving rods 10, 11
4 rises. Next, the component conveying drum 2 is driven again intermittently, and the electronic component 1 to be centered next is the centering claw.
Sent between 13 and 14.

After that, the above operation is repeated and the electronic components 1 are sequentially centered. The electronic component 1 centered in this way is then taped by the taping unit.

In this way, the centering claws 13 and 14 vertically move and open / close to center the electronic component 1. Therefore, even if the length of the element 1a varies, the electronic components 1 having different lengths can be used without any problem. The centering is done reliably and with high accuracy. Further, since the centered electronic component 1 can be sent after the centering claws 13 and 14 are opened, the centered electronic component 1 is not moved and the position thereof is not changed, or the electronic component 1 is not skipped.

[Effects of the Invention] As is apparent from the above description, according to the present invention, a component transport mechanism that supports and transports the lead wire of an axial lead type electronic component, and is disposed above this component transport mechanism. ,
A pair of centering claws provided with a thin groove that loosely fits on the lead wire; a claw vertical movement mechanism that lowers the pair of centering claws to loosely fit the narrow groove on the lead wire; and a pair of centering claws. Since it consists of a claw opening / closing mechanism that opens and closes in the direction parallel to the axis of the lead wire at the lowered position, it is possible to secure electronic components with different lengths of elements and different lengths, and electronic components with different diameters at both ends of the element. In addition, it is possible to perform centering with high accuracy.

[Brief description of drawings]

FIG. 1 is a partially sectional front view showing an embodiment of a parts centering device according to the present invention, FIG. 2 is a plan view of a claw opening / closing mechanism part of FIG. 1, and FIG. 3 is a parts conveying drum and a centering claw part. 4 is a plan view of the pawl vertical movement mechanism portion. 1: Electronic component, 1b: Lead wire, 2: Component transport drum, 4, 5: Guide rod, 8, 9: Sliding piece, 10, 11: Vertical movement rod, 13, 14: Centering claw, 13a, 14a: Narrow groove, 15, 16: Connection lever, 17: Swing lever, 21, 22: Pulley, 23: Flexible strip, 30: Cam shaft, 31: Claw up / down cam, 32: Claw open / close cam.

Claims (2)

[Claims] 1. A component carrying mechanism for supporting and carrying a lead wire of an axial lead type electronic component, and a pair of fine grooves provided above the component carrying mechanism and provided with a thin groove loosely fitted to the lead wire. A centering pawl, a pawl vertical movement mechanism that lowers the pair of centering pawls to loosely fit the narrow groove to the lead wire, and a position parallel to the axis of the lead wire at a position where the pair of centering pawls is lowered. A component centering device for taping machines that consists of a pawl opening / closing mechanism that opens and closes. 2. A pawl opening / closing mechanism includes a guide member arranged parallel to an axis of a lead wire, a pair of sliding pieces slidably disposed along the guide member, and the pair of sliding members. A pair of pulleys arranged on the outer side of the strip, and a flexible strip wound around the pulleys in parallel with the guide member and having the pair of sliding strips fixed at point-symmetrical positions. A parts centering device for a taping machine according to claim 1.