JP2008156021A - Conveyance device for long strip - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To correct misalignment of a conveyance position of a long strip easily to facilitate the work for adjusting operation of a conveyance mechanism. <P>SOLUTION: This conveyance device for the long strip 10 is provided with guide rollers 40a, 40b supporting a first roller 20a and a second roller 20b arranged across the long strip to rotate around a supporting shaft 32 as a fulcrum and abutted on both side fringes of the strip on lead-in side of the rollers of the strip 10 and rolling, a swing member 30 for linking the guide rollers 40a, 40b to the first and second rollers 20a, 20b and following the movement of the guide rollers 40a, 40b when conveying the strip 10 to rotate the first and second rollers 20a, 20b around the supporting shaft 32 as the fulcrum, and returning means 50a, 50b for returning the first and second rollers 20a, 20b to reference positions when the first and second rollers 20a, 20b are deviated from the reference positions. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport device for a long belt-like body such as a lead frame, and in particular, a long belt-like body that can be reliably transported while preventing the meandering of the long belt-like body when transporting the long belt-like body with a roller. The present invention relates to a body transport device.

The process of processing a long band-shaped body such as a lead frame includes a process of plating the long band-shaped body (work), exposing to form a pattern, or etching. In these processes, the workpiece is conveyed and processed so as to pass through the processing apparatus.
FIG. 3 is a schematic diagram showing an example of the configuration of an apparatus for plating the workpiece 10 as an example of an apparatus for processing while conveying a long strip. In the figure, the work 10 is unwound from a roll body 5 wound in a roll shape, passes through a treatment tank 6, is plated, and is then wound as a roll body 7.

Drive rollers 11 a and 11 b that convey the workpiece 10 forward are disposed on the exit side of the workpiece 10 in the processing tank 6, that is, the winding side of the workpiece 10, and brake rollers 12 a and 12 b are disposed on the inlet side of the processing tank 6. Has been placed. The workpiece 10 is conveyed with tension applied by conveying the workpiece 10 with the driving rollers 11a and 11b while applying a brake to the workpiece 10 with the brake rollers 12a and 12b.
Power supply rollers 20 are disposed on the outlet side and the inlet side of the processing tank 6. The power supply roller 20 functions to set the workpiece 10 to a predetermined potential while clamping the workpiece 10 in the thickness direction. For example, when the processing tank 6 has a negative potential, the power supply roller 20 is set to a positive potential.

FIG. 4 shows a configuration of a conventional power feeding roller 20. 4A is a plan view, FIG. 4B is a side view, and FIG. 4C is a front view. As shown in FIGS. 4B and 4C, the power supply roller 20 has a power supply roller 20a and a pressure roller 20b formed in a cylindrical body on a support column 24 erected on a base 22 in parallel with each other. In addition, the work 10 is attached so as to be rotatable by pressing in the thickness direction. In this example, the power supply roller 20a has the outer peripheral surface of the core material covered with a conductive material such as stainless steel or copper, and the pressing roller 20b is made of a resin material.
As shown in FIG. 4A, the power supply roller 20a and the pressure roller 20b are formed to have a length capable of pressing the entire width of the work 10, and the power supply roller 20a and the pressure roller 20b are transported when the work 10 is conveyed. Rotate following.

By the way, when conveying a long strip | belt-shaped body, it is necessary to convey a long strip | belt-shaped body linearly toward the advancing direction. For this reason, conventionally, the direction of the drive rollers 11a and 11b, brake rollers 12a and 12b, power supply roller 20 and guide rollers 13 and 14 (directions in the horizontal plane and vertical plane) of the conveying device is adjusted in advance. The long strip is going straight.
There are various apparatuses for conveying and processing the long band-like body, and various methods for linearly conveying the long band-like body within a predetermined feeding range have been proposed (for example, Patent Documents 1 to 3). 4).
JP 2006-264879 A JP-A-63-1665 JP 2001-71027 A JP-A-9-316689

  As described above, in the conveying device for the long band-like body, the direction and the inclination of the roller are adjusted so that the long band-like body is conveyed linearly, but the long band-like body such as a plating apparatus is processed. Since various types of products are processed in the device, when actually adjusting the conveying device, various workpieces with different width dimensions and thicknesses are experimentally conveyed to adjust the position of the rollers. . Since such adjustment work repeats delicate adjustment work, there is a problem that it takes a lot of man-hours.

Even when the transport mechanism can be adjusted, if the work itself is deformed (camber) or if the work has a strain stress, the work may be deformed and meandered during transport. Inevitable. For example, in a lead frame formed by pressing a long strip, the work remains strained. When the work is clamped and conveyed by a roller, it is easy to deform or meander due to work strain. Become. Further, the work is transported by applying a tension, but the tension acting on the work cannot always be equalized depending on the state of the work.
For this reason, even if the conveying mechanism such as the pre-rolling roller is adjusted, it is inevitable that the workpiece is actually conveyed with a position shift (meandering) from the straight advance position.

As a method for preventing the long band from moving out of a predetermined transport position when the long band is transported, the feeding position of the side edge of the long band is detected by a sensor or the like, There is also a method of providing a mechanism for correcting the transport position of the strip-shaped body. However, the provision of such a correction mechanism complicates the apparatus configuration.
The present invention has been made to solve these problems, achieves correction of the transport position of the long belt-like body with an easy mechanism, facilitates adjustment work of the transport mechanism, and accurately transports the long belt-like body. It is an object of the present invention to provide a transport device for a long band-shaped body that makes it possible.

The present invention has the following configuration in order to achieve the above object.
That is, it is a long belt-like body transport device provided with a transport mechanism that transports the work consisting of the long belt-like body while being pressed by a roller, and the roller is disposed so as to face the arrangement sandwiching the long belt-like body. The first roller and the second roller are supported by the support shaft so as to be rotatable about a support shaft. A guide roller that abuts on both side edges and rolls, and the guide roller and the first roller and the second roller are linked to follow the movement of the guide roller when the workpiece is conveyed. A swinging member that rotates the first roller and the second roller with the support shaft as a fulcrum, and the first roller and the second roller when the first roller and the second roller are displaced from a reference position. Return the 2 roller to the reference position. Characterized in that it includes a return means for.

The first roller and the second roller are provided to rotate about the support shaft in a horizontal plane, and the swing member is provided to swing about the support shaft in a horizontal plane. Thus, the workpiece can be transported while suppressing the displacement of the workpiece in the horizontal plane.
The swing member is provided to swing about the support shaft, the first roller and the second roller are mounted on the swing member, and the guide roller is the swing member. By being mounted on the member, the first roller and the second roller can be rotated in accordance with the movement operation of the guide roller, so that the workpiece can be accurately conveyed.
In addition, the return means is provided as means for returning the swing member to the reference position, so that the first roller and the second roller can be easily returned to the reference position.

  According to the apparatus for transporting a long belt according to the present invention, when the work is transported, the first roller and the second roller are rotated around the support shaft as a fulcrum following the position shift of the work, The workpiece can be transported while suppressing the displacement of the workpiece, and the workpiece can be accurately transported even when the amount of displacement of the workpiece varies depending on the product. In addition, since an accurate conveyance operation is performed according to the positional deviation of the workpiece, adjustment of a conveyance mechanism such as a roller becomes easy, and the efficiency of adjustment work can be improved.

The invention of the present application is characterized in the configuration of a driven roller that is installed by clamping a work of a long belt-like body in a long belt-like body conveyance mechanism. FIG. 1 shows a power supply roller 20 used in a plating apparatus as an example of the arrangement of rollers used in a long belt-like body conveying apparatus.
FIG. 1A is a plan view showing the configuration of the power supply roller 20, FIG. 1B is a side view, and FIG. 1C is a front view of the power supply roller 20 as viewed from the direction of entry. .

As shown in FIG. 1B, the power supply roller 20 of the present embodiment includes a power supply roller 20a and a pressure roller 20b provided so as to clamp the work 10 that is a long belt-like body. The power supply roller 20a and the pressure roller 20b constitute the first roller and the second roller in the present invention. The power supply roller 20a and the pressure roller 20b are formed in a cylindrical body having the same shape. 20b is pivotally supported by the support column 24 at both ends in the longitudinal direction.
The power supply roller 20a is formed by covering an outer surface with a conductive material such as stainless steel or copper, and is connected to a power source to set the workpiece 10 to a predetermined potential. The pressing roller 20b is formed of a resin material that is an electrical insulator, for example, vinyl chloride, and functions to clamp the workpiece 10 in the thickness direction between the pressing roller 20b and the power supply roller 20a. The clamping pressure applied to the workpiece 10 is made by adjusting the mounting height position and the mounting angle of the pressing roller 20b in the support column 24.

  A characteristic configuration of the power supply roller 20 of the present embodiment is that, in the conventional power supply roller, after the positions of the power supply roller 20a and the pressing roller 20b are adjusted, the workpiece 10 is transported by being fixed to the base 22. In contrast to this, in the present embodiment, the feeding roller 20a and the pressing roller 20b are set at a fulcrum at the same plane position as the center (the center in the width direction and the axial direction), and the power is fed around the fulcrum. The roller 20a and the pressing roller 20b can be turned in a plane, and when the workpiece 10 is displaced (meandering), the power supply roller 20a and the pressing roller 20b are displaced from the reference position according to the amount of displacement of the workpiece 10. The work 10 is configured to be conveyed.

  That is, as shown in FIG. 1, a support plate 30 as a swinging member is rotatably mounted in a horizontal plane via a support shaft 32 arranged at the same plane position as the centers of the power supply roller 20a and the pressing roller 20b. The support 24 is erected on the support plate 30 to support the power supply roller 20a and the pressing roller 20b on the support 24. The work 10 is provided on the entrance side to the power supply roller 20 and on both side edges of the work 10 respectively. A configuration in which guide rollers 40a and 40b are arranged so that the outer peripheral side surfaces abut, and springs 50a and 50b are arranged as return means for returning the support plate 30 to the reference position between both side edges of the support plate 30 and the base 22. And

In this embodiment, the support plate 30 has a rectangular planar shape as shown in FIG. 1A, and rotates in parallel with the plane of the base 22 as shown in FIGS. 1B and 1C. In this manner, the support shaft 32 is supported. The support plate 30 supports the guide rollers 40a and 40b so as to swing around the support shaft 32. The form of the support plate 30 is not limited to a rectangle. For example, the support plate 30 has a T-shape. It can also be formed in a planar shape.
The guide rollers 40a and 40b are supported on the top of a support rod 42 erected on the support plate 30 so as to be able to roll in a horizontal plane. The height of the support rod 42 is such that the side edges of the work 10 come into contact with the outer peripheral sides of the guide rollers 40a and 40b. In other words, the outer peripheral side of the guide rollers 40a and 40b is the height position at which the work 10 is conveyed. Set to be within.

As shown in FIG. 1C, the springs 50 a and 50 b are attached so as to spring between the stopper 52 erected on the base 22 and the side surface of the support plate 30. In the present embodiment, the mounting positions of the springs 50 a and 50 b are set to the same side as the side on which the guide rollers 40 a and 40 b are mounted on the support plate 30 with respect to the support shaft 32, that is, to the power supply roller 20 of the workpiece 10. It is arranged on the entrance side.
The action of the springs 50a and 50b enables the support plate 30 to be rotated in the horizontal plane about the support shaft 32 as a fulcrum, and the support plate 30 is moved from the reference position to the reference position from the position where the support plate 30 is displaced. It works to restore. The arrangement positions of the springs 50a and 50b are not limited to the arrangement of the present embodiment, and can be appropriately arranged so that the support plate 30 can be returned to the reference position.

Further, as a means for returning the support plate 30 to the reference position, a tension spring can be used instead of the spring, and a biasing member other than the spring can be used. Moreover, it can also be based on the method of providing the elastic restoring property to the support shaft 32.
In addition, when installing spring 50a, 50b, it adjusts these urging | biasing forces, and it attaches so that it can return to a reference | standard position correctly. Usually, the springs 50a and 50b are adjusted such that the approach angle of the workpiece 10 (the angle formed between the longitudinal direction of the workpiece and the reference position in the conveyance direction of the conveyance device) becomes 0 degrees.

  FIG. 2 shows the operation of the power supply roller 20 of this embodiment. FIG. 2 shows a state where the work 10 meanders and enters the power supply roller 20. Since the guide rollers 40a and 40b are disposed on the entry side of the workpiece 10 with respect to the power supply roller 20, when the workpiece 10 is displaced in the width direction, the guide roller 40a is always in contact with the side edge of the workpiece 10. , 40b are displaced in the width direction according to the workpiece 10, and the support plate 30 swings around the support shaft 32 as a fulcrum.

  When the support plate 30 swings, the power supply roller 20 a and the pressing roller 20 b supported by the support plate 30 rotate together with the support plate 30. The rotation (turning movement) of the power supply roller 20a and the pressure roller 20b is rotation with the support shaft 32 as a fulcrum, and the power supply roller 20a and the pressure roller 20b rotate in the horizontal plane as shown in the figure with respect to the reference position ( Angle θ). The action of rotating the power supply roller 20a and the pressing roller 20b is an action of rotating in accordance with the positional deviation of the work 10 when the work 10 meanders and is displaced in the width direction. In addition, the meandering of the work 10 is canceled, that is, when the work 10 enters the power supply roller 20, if the approach angle deviates from 0 degrees, the amount of deviation of the work 10 is canceled.

In this way, when the approach direction of the work 10 is deviated, if the direction of the power supply roller 20 is made variable by following the displacement of the work 10, the work 10 can be changed with respect to the power supply roller 20. Even if the position is shifted, the position shift of the work 10 is resolved and the work 10 is conveyed.
Since the guide rollers 40a and 40b are always in contact with the side edge position of the workpiece 10 and roll, the rotation angle of the support plate 30 increases as the amount of meandering of the workpiece 10 increases, and the support plate decreases as the amount of meandering decreases. 30 rotation angle becomes small. Therefore, the directions of the power supply roller 20a and the pressing roller 20b are automatically adjusted according to the amount of displacement (meandering amount) of the workpiece 10, and an operation according to the amount of displacement of the workpiece 10 is performed.

  In the conventional conveying device, the power supply roller 20a and the pressing roller 20b are fixed to the base 22, and therefore, when the workpiece 10 is displaced (meandering), the displacement of the workpiece 10 is conveyed without being absorbed, and the positional deviation is detected. However, in the case of the present embodiment, the positional deviation of the workpiece 10 is eliminated by the turning movement of the power supply roller 20, and an unreasonable force is applied to the workpiece 10. It can be transported without making it.

  Further, when the workpiece 10 is displaced, the power supply roller 20 rotates following the workpiece 10 and at the same time the support plate 30 tries to return to the reference position by the urging force of the springs 50a and 50b. For this reason, a force for returning the workpiece 10 to the reference position is applied via the roller 20 for the purpose, and this also has an effect of suppressing the displacement of the workpiece 10. As the amount of displacement of the workpiece 10 increases, the fluctuation angle of the power supply roller 20 increases with this, so the return force acting on the workpiece 10 also increases, and the effect of suppressing the displacement acting on the workpiece 10 acts effectively. To do.

As described above, according to the transport mechanism of this embodiment, the direction of the power supply roller 20 changes in accordance with the positional deviation amount (meandering amount) of the workpiece 10 and the direction of the positional deviation. This is advantageous in that it can be easily handled even if the orientation of the machine is mixed, and can be used particularly effectively for a processing apparatus for processing a wide variety of products.
Further, since there is such an automatic correction action, the work of adjusting the transport mechanism in advance is eased, and the adjustment work is made efficient. Further, there is an advantage that the work of re-adjusting the setting of the transport mechanism is simplified each time the product type is changed.

  In an actual apparatus, the amount of change in the orientation of the power supply roller 20a and the pressing roller 20b (inclination angle θ) with respect to the amount of displacement of the guide rollers 40a and 40b from the reference position is supported by the guide rollers 40a and 40b. Since it differs depending on the distance from the shaft 32, the arrangement position of the guide rollers 40a and 40b on the support plate 30, etc., the appropriate arrangement position of the guide rollers 40a and 40b is selected and the workpiece 10 is accurately conveyed. do it.

  In the above-described embodiment, the example in which the present invention is applied to the power feeding roller 20 of the plating apparatus has been described. However, the present invention is not limited to the case of applying to the power feeding roller 20, and a long belt-like body is used. The present invention can also be applied in the same manner to a transport mechanism that transports while being sandwiched between cylindrical rollers, for example, when exposure processing is performed by passing through an exposure apparatus, and etching is performed by passing through an etching bath.

It is the top view (a), side view (b), and front view (c) which show the structure of 1st Embodiment of the roller for electric power feeding of this invention. It is explanatory drawing which shows the effect | action of the roller for electric power feeding. It is the schematic which shows the whole structure of a plating apparatus. It is the top view (a) which shows the conventional roller structure for electric power feeding, a side view (b), and a front view (c).

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Work 11a, 11b Drive roller 20 Power supply roller 20a Power supply roller 20b Pressing roller 22 Base 24 Strut 30 Support plate 32 Support shaft 40a, 40b Guide roller 42 Support rod 50a, 50b Spring 52 Stopper

Claims (4)

A transport device for a long belt-shaped body provided with a transport mechanism that transports the workpiece made of a long belt-shaped body by pressing with a roller,
The roller is composed of a first roller and a second roller arranged opposite to the arrangement sandwiching the long band-shaped body,
The first roller and the second roller are rotatably supported with a support shaft as a fulcrum,
A guide roller that rolls in contact with both side edges of the workpiece on the entry side of the roller of the workpiece;
The guide roller is linked to the first roller and the second roller, and the first roller and the second roller are moved along the support shaft following the movement of the guide roller when the workpiece is conveyed. A swinging member that rotates around the fulcrum,
A transport apparatus comprising: a return means for returning the first roller and the second roller to the reference position when the first roller and the second roller are displaced from the reference position. The first roller and the second roller are provided to rotate around the support shaft in a horizontal plane,
The conveying device according to claim 1, wherein the swing member is provided to swing in the horizontal plane with the support shaft as a fulcrum. The swing member is provided to swing with the support shaft as a fulcrum,
The first roller and the second roller are mounted on the swing member;
The transport apparatus according to claim 2, wherein the guide roller is mounted on the swing member.   The transport apparatus according to claim 1, wherein the return means is provided as means for returning the swing member to a reference position.

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