JPH07323909A - Supporting-carrying device for lower end of vertical - Google Patents

Abstract

PURPOSE:To surely seize the lower end of a vertical plate even if its seizing allowance is small in a lower end supporting-carrying device for carrying a processed vertical plate used for surface mounting in a vertical attitude by sandwichedly holding the lower end of the processed vertical plate between a pair of metallic belts which has a rectangular section and is opened toward the outside and bent in a C-shape for carrying the vertical plate. CONSTITUTION:A pair of the first metallic belts 1, 1a formed of corrosion resisting hard material, namely titanium or the like, is formed in such a shape as a rectangular sectional belt is previously opened outward and bent in a C-form, and severally wound round between the first driving pulleys 2, 2a and the second driven pulleys 3, 3a. In the case of carrying a processed vertical plate 10 provided with ceramics 12, 12a at the middle of a lead frame 11 by such carrying device, its lower end frame 13 is lowered near the lower end of a gap 15 between the belts 1, 1a, and the frame 13 is sandwichedly held between the upper end edges 16, 16a of the outer peripheral faces 4, 4a, 5, 5a of the belts 1, 1a just under an upper gap 14 for carrying the processed vertical plate 10 as it is vertically held.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a vertical plate to be processed, particularly Q
FP (Quad Flat Package), a type of component used for surface mounting, which has a frame that is punched in the final step around the outer periphery of a flat package with leads in four directions. The present invention relates to a vertical plate lower end supporting and conveying device suitable for conveying in a vertical posture.

[0002]

2. Description of the Related Art When sandwiching with a conventional flat belt,
There was a problem in that it was not possible to strongly hold the narrow portion at the lower end in the vertical width, and the width of the frame was increased.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to ensure that a vertical plate to be processed can be reliably gripped even if the margin for gripping the lower end is small.

[0004]

According to a first aspect of the present invention, a pair of corrosion-resistant hard first metal belts each having a rectangular cross section that is curved outward in a C-shape and outwardly opened is provided with a pair of front and rear C-shaped cross-section outer peripheries. The first and second pulleys on the surface are tensioned and passed over, and the lower end of the vertical plate to be processed is sandwiched between the upper ends of the belt straight parts where the outer peripheral surfaces face each other, and the vertical plate to be processed is driven in a vertical posture. It is the lower end supporting and conveying device of the vertical plate.

According to a second aspect of the present invention, a pair of corrosion-resistant hard second metal belts each having a rectangular cross section that opens outward toward the inside of the first metal belt between the belt-facing straight portions and is curved in a C shape are provided in front and rear.
The third and fourth pulleys having a C-shaped cross-section outer peripheral surface that are open outward of the pair are tensioned and applied, and the inner peripheral surface of the first metal belt is pressed by the outer peripheral surface of the second metal belt. It is a lower end support conveyance device of the perpendicular board according to claim 1.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numerals 1 and 1a in FIG. 1 are a pair of corrosion-resistant hard first metal belts, each of which has a rectangular cross-section and is curved outwardly in a C-shape, and is made of titanium, stainless steel or the like. 2, 2a is a drive first pulley at the front end as shown in FIG. 2, 3 (FIG. 2), 3a is a driven second pulley at the rear end, and the materials of these pulleys are selected according to the chemicals used, such as stainless steel, titanium, and aluminum. It is made of either a new material or resin, and the pulleys are belts 1, 1
an outer peripheral surface 4, 4a, 5, 5a having a C-shaped cross section which is opened outward so that the inner peripheral surface of a closely contacts, and upper and lower flanges 6, 6a having a diameter slightly larger than the outer peripheral surfaces 4, 4a, 5, 5a, 7, 7a and drive shafts 8, 8a.

Reference numeral 10 in FIG. 1 denotes a vertical plate to be processed. Specifically, a ceramics 12, 12a including a substantially square chip is provided in the center of a substantially square lead frame 11 (made of 4-2 alloy or the like) when viewed from the left and right. A frame 13 to be prepared and cut off around the periphery when completed
The frame 13 at the lower end enters into the vicinity of the lower end of the gap 15 between the belts 1 and 1a through the narrow upper gap 14 of the flanges 6 and 6a, and the belts 1 and 1 are provided immediately below the upper gap 14.
The frame 13 is strongly held by the upper edges 16 and 16a of the outer peripheral surface of a, and the vertical plate 10 to be processed is held vertically. When the vertical plate 10 to be processed receives a tilting force due to the flow of the plating solution in the plating tank, the upper gap 14 is narrow and the lower end of the frame 13 is near the lower end where the gap 15 is narrow. This prevents tilting as much as possible. Flange 7, 7
The lower clearance 17 of a is equal to the upper clearance 14 and supports the lower ends of the belts 1 and 1a at the protruding portions from the pulley outer peripheral surfaces 4 and 4a. Reference numeral 18 is a guide.

Since the belts 1 and 1a are formed by preliminarily forming a titanium plate having a thickness of 1 mm into a C shape, as shown in FIG.
The rigidity can be sufficiently maintained between the front and rear pulleys 2 and 3, and a backup plate having an elastic body for pressing the vertical plate 10 to be processed can be omitted. However, when the belts 1 and 1a become long, a cathode brush (not shown) for energization and backup plates 19 and 19a having an elastic body for pressing the belts 1 and 1a against the vertical plate 10 to be processed are arranged. Good. 20,
20a is an anode, 21 is a plating tank, and arrow A shows the carrying direction.

In FIG. 3, second metal belts 23, 23a are arranged in order to add a pressing force to the belts 1, 1a holding the vertical plate 10 to be processed in the plating tank 21.
The second metal belts 23, 23a are also made of a pair of corrosion-resistant hard titanium and the like having a rectangular cross section that is curved outward in an open C-shape, and are preformed so as to be in close contact with the inner peripheral surfaces of the first metal belts 1, 1a. The third and fourth pulleys 24, 24a, 25, 2 of the C-shaped cross-section outer peripheral surface which are opened outwardly in each pair of front and rear
5a (made of the same material as the pulleys 2 and 3) is tensioned and stretched, and the vertical plate 10 is sandwiched between the inner peripheral surfaces of the first metal belts 1 and 1a and the outer peripheral surfaces of the second metal belts 23 and 23a. It is configured to be pressed by the surface. FIG. 4 is a schematic sectional view taken along the line IV-IV of FIG.

In FIG. 3, 27 is a pretreatment tank, 28 is a posttreatment tank,
M is a motor. Further, in the present invention, the section C of the belt is
The shape is used in a meaning including a substantially V shape and a substantially U shape.

[0011]

According to the invention of claim 1, the belts 1, 1 are
Since the cross-sectional shape of a is formed of a pair of corrosion-resistant hard metals having a rectangular cross-section that is open outward and curved into a C shape, the frame 13 can be strongly held by the upper edges 16 and 16a, and the gripping margin is small. Since the holding force between the front and rear pulleys can be kept constant, the backup elastic mechanism can be omitted.

According to the invention of claim 2, the belt 1, 1a
Even if the length is increased, a holding force can be added to the plating tank 21, the pretreatment tank 27, and the posttreatment tank 28, and the structure is simplified.

[Brief description of drawings]

1 is a schematic vertical sectional front view taken along the line II of FIG.

FIG. 2 is a schematic plan view.

FIG. 3 is a schematic plan view of the invention of claim 2;

4 is a schematic cross-sectional view taken along the line IV-IV of FIG.

[Explanation of symbols]

 1 1st metal belt 2 1st pulley 3 2nd pulley 10 Vertical plate to be processed 23 2nd metal belt 24 3rd pulley 25 4th pulley

Claims (2)

[Claims] 1. A pair of corrosion-resistant hard first metal belts having a rectangular cross section curved outwardly toward the C-shape, and a pair of front and rear C-shaped cross-section outer peripheral surfaces of the first and second outwardly open sides. The lower end of the vertical plate is designed to be driven in a vertical posture by tensioning the pulley and passing it over, and sandwiching the lower end of the vertical plate to be processed between the upper ends of the belt straight parts where the outer peripheral surfaces face each other. Supporting and transporting device. 2. A pair of anti-corrosion hard second metal belts having a rectangular cross section that opens outward toward the inside of the first metal belt between the belt-facing straight portions and is curved in a C shape, and faces each pair of front and rear sides to the outside. The third and fourth pulleys having an open outer peripheral surface of the C-shaped cross section are tensioned and applied, and the inner peripheral surface of the first metal belt is pressed by the outer peripheral surface of the second metal belt. Vertical plate lower end support transport device.