JP2008012602A - Device for feeding plate material in working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for feeding a plate material in a working machine, which device can carry the plate material while bringing it into contact with a reference guide under a nearly constant pressure without being affected by the variation of the width of the plate material. <P>SOLUTION: A feed roller 12 is provided so as to feed the plate material 35 in one direction by being brought into contact with the surface of the plate material 35. A driving shaft 13 is provided at the central portion of the feed roller 12 so as to rotate the feed roller 12. Bearings 14 are provided so as to rotatably support the driving shaft 13. The bearings 14 are swivelably arranged on a frame 2 via a fulcrum pin 17 which orthogonally crosses the surface of the plate material 35. An elastic body 25 is provided so as to swivelably energize the driving shaft 13 in one direction about the fulcrum pin 17. The swivelling direction of the driving shaft 13 due to the elastic body 25 is determined such that the direction can apply the component force toward the reference guide 7 to the plate material 35 when the feed roller 12 feeds the plate material 35 in one direction. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a plate material feeding device for a processing machine that moves a plate material in a processing section when forming a dividing groove in a thin plate material such as a printed circuit board or cutting the plate material to a predetermined size. It is about.

By providing guides facing each other on both sides of the belt conveyor on which the rectangular plate material is placed, and by bringing the guides closer to both sides of the plate material placed on the belt conveyor, the plate material transferred by the belt conveyor can be moved. There was one that was restricted to move in the width direction.

Generally, the width of a plate material such as a printed circuit board varies due to processing errors or deformation. When trying to feed such a plate material with a varying width with the conventional feeding device, the plate material having a width wider than a specified value may collide with the guide and not be smoothly transferred, or may be smaller than the specified value. As a result, a gap is generated between the plate material and the guide, and the plate material moves in the lateral direction, so that high-precision machining cannot be performed.
Japanese Utility Model Publication No. 3-14277.

An object of the present invention is to obtain a plate material feeding device of a processing machine that transfers the plate material in one direction while being brought into contact with a reference guide at a substantially constant pressure without being affected by fluctuations in the width of the plate material.

The present invention is configured as follows to achieve the above object. That is, the invention according to claim 1 is provided with a reference guide that faces one side of a rectangular plate placed on a table, and a feed roller that contacts the surface of the plate and feeds the plate in one direction, A drive shaft for rotating the feed roller is provided at the shaft center portion of the feed roller, and a bearing for rotatably supporting the drive shaft is provided, and the bearing is provided via a fulcrum pin orthogonal to the surface of the plate member. An elastic body is provided on the frame so as to be rotatable, and the drive shaft is urged to rotate in one direction around the fulcrum pin. The rotation direction of the drive shaft by the elastic body is determined by the feed roller using a plate material. This is the direction in which component force in the reference guide direction is applied to the plate material when feeding in one direction.
The invention according to claim 2 is provided with a reference guide facing one side of a square plate placed on a table, and a pair of upper and lower feed rollers that contact the upper and lower surfaces of the plate and feed the plate in one direction. A drive shaft that rotates the feed roller is provided at the shaft center of each feed roller, a bearing that rotatably supports each drive shaft is provided, and a fulcrum pin that is orthogonal to the surface of the plate member is provided with the bearing. And an elastic body that pivotably urges each drive shaft in one direction around the fulcrum pin, and the direction of rotation of each drive shaft by the elastic body is determined by the feed When the roller feeds the plate material in one direction, the direction in which the component force in the reference guide direction is applied to the plate material is set.

In the invention according to claim 1, since the rotation axis of the feed roller is inclined by the elastic body with respect to the feed direction of the plate material, when the feed roller is rotated, the plate material on the table is directed in one direction. At the same time, the plate material is moved (moved laterally) toward one side of the table. Since there is a reference guide on one side of the table, the plate material is fed in the one direction while being in contact with the reference guide. Further, when the plate material contacts the reference guide, the resistance of the feed roller to the lateral movement of the plate material increases, and the feed roller is rotated in a direction away from the reference guide against the reaction force of the elastic body, and the feed roller is rotated. The lateral movement force of the plate material by the roller is reduced. For this reason, the plate material fed on the table does not depend on the fluctuation of its width, and one side always comes into contact with a substantially constant pressure defined by the reference guide, and the plate material is deformed by the contact of the reference guide. Therefore, high-precision machining can be performed.
In the invention according to claim 2, the upper and lower surfaces of the plate material are sandwiched by a pair of upper and lower feed rollers to feed the plate material in one direction and move (laterally move) toward the reference guide. The contact with the reference guide is stabilized. Further, the contact pressure of the plate material to the reference guide by the feed roller is maintained at a prescribed pressure, so that deformation of the plate material due to the contact of the reference guide is prevented, and high-precision processing can be performed.

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, FIG. 1 is a plan view showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG.

1 to 3, reference numeral 1 denotes a processing machine, and a pair of upper and lower rotary cutters 5 that form dividing grooves on the upper and lower surfaces of a plate material 35 such as a printed circuit board, and a roller conveyor on which the processed plate material 35 is placed. A table 6 having a shape, a reference guide 7 for positioning the plate material 35 placed on the table 6, a feeding device 10 for feeding the plate material 35 on the table 6 in one direction, and the like. In addition, the board | plate material 35 mounted in the said table 6 is externally processed by the front process, and becomes square or rectangular shape.

In the rotary cutter 5, teeth having a V-shaped cross section are fixed to the outer periphery of a thin disk body at a predetermined pitch, and the divided V grooves 36 facing each other are formed on the upper and lower surfaces of the plate material 35 by the teeth. . The reference guide 7 is extended in the feeding direction of the plate material 35 (left-right direction in FIG. 1) and fixed to the front portion of the frame 2, and comes into contact with one side end of the plate material 35 fed by the feeding device 10. Horizontal positioning is performed.

The feeding device 10 is configured by arranging two sets of roller units 11-1 and 11-2 having the same structure in the feeding direction of the plate member 35 (left and right direction in FIG. 1). Among these, the right roller unit 11-1 is arranged. This will be explained as a representative. The roller unit 11-1 has a pair of upper and lower feed rollers 12 (12 a, 12 b) that contact the upper and lower surfaces of the plate material 35. Each of the feed rollers 12a and 12b is a rubber roller having a high frictional force, and a drive shaft 13 (13a and 13b) is coaxially fixed to each axial center portion, and a bearing 14 (14a and 13b) is attached to each of the drive shafts 13a and 13b. 14b) is inserted.

The bearings 14a and 14b are arranged in the upper and lower sides and accommodated in a bearing case 15 (15a and 15b) oriented in a horizontal direction perpendicular to the feeding direction of the plate member 35 (FIG. 2), and the bearing cases 15a and 15b are accommodated. The connecting rods 16 are connected to each other. The connecting rod 16 is inserted into both sides (left and right in FIG. 3) of the bearing cases 15a and 15b, and the lower part thereof is fixed to the lower bearing case 15b with screws. Further, the upper bearing case 15a is connected to the upper portion of the connecting rod 16 while allowing a slight vertical movement.

As shown in FIG. 3, a fulcrum pin 17 is erected upward and fixed with screws to the upper part of the lower bearing case 15b, and the fulcrum pin 17 is attached to the bracket 3 on the frame 2 side. To be freely rotatable. Thereby, the upper and lower feed rollers 12a and 12b described above can be rotated about the fulcrum pin 17.

An elastic body 25 is interposed between the lower bearing case 15 b and the bracket 3, and the elastic force of the elastic body 25 causes the bearing case 15 b and therefore the upper and lower feed rollers 12 a and 12 b to be centered on the fulcrum pin 17. It is urged to rotate in one direction, that is, toward the feeding direction of the plate member 35 (leftward in FIG. 1). The elastic body is formed of a coil spring. As shown in FIG. 3, the coil portion is fitted to a spring holding pin 26 that is suspended and fixed coaxially with the fulcrum pin 17 at the lower portion of the bearing case 15 b, and one end of the elastic body The other end is locked to the spring receiving pin 28 fixed to the lower portion of the bearing case 15b. Note that the rotation angle α (FIG. 1) of the feed rollers 12a and 12b in the feed direction of the plate member 35 is about 2 degrees in this example. The rotation angle α is set by attaching a stopper pin (not shown) to the bracket side, and the stopper pin collides with the bearing case 15 when the feed rollers 12a and 12b are rotated by a predetermined angle (about 2 degrees). , To prevent further rotation.

The rotation of the feed rollers 12a and 12b of the roller units 11-1 and 11-2 is performed by attaching a timing pulley 30 to the rear ends of the drive shafts 13a and 13b, and as shown in FIG. A timing belt 31 is suspended in an S-shape on the pulley 30 and the timing belt 31 is rotated in the direction of arrow A by a motor, whereby the upper and lower feed rollers 12a and 12b sandwich the upper and lower surfaces of the plate member 35. The plate member 35 is sent to the arrow B (left side) in FIG.

According to the embodiment, since the rotational axis of the feed roller 12 is inclined by the elastic body 25 toward the reference guide 7 with respect to the feed direction of the plate material 35, the feed roller 12 moves the plate material 35 on the table 6. In FIG. 1, a component force that moves (laterally moves) the plate material 35 in the direction of the reference guide 7 is generated when the sheet material 35 is fed leftward. For this reason, the plate member 35 is brought into contact with the reference guide 7 and sent leftward. Further, when the plate member 35 comes into contact with the reference guide 7 and further lateral movement is prevented, a reaction force in a direction away from the reference guide 7 acts on the feed roller 12, and the feed roller 12 is elastic body 25. Rotating in a direction away from the reference guide 7 against the elastic force, the component force by which the feed roller 12 moves (laterally moves) the plate material 35 in the direction of the reference guide 7 becomes small.

Therefore, the plate member 35 fed on the table 6 is always fed to the left side with one side surface being in contact with the reference guide 7 without being affected by the fluctuation of the width thereof, and also to the reference guide 7 of the plate member 35. The contacting pressure is held substantially constant by the elastic body 35. For this reason, even if it is a thin board | plate material, it can feed smoothly, preventing the deformation | transformation of the board | plate material 35 by the said contact, and the process of the V groove 36 by the rotary cutter 5 can be performed with high precision.

It is a top view which shows the Example of this invention. It is II-II sectional drawing of FIG. It is a partial cross section rear view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Processing machine 2 Frame 3 Bracket 5 Rotating cutter 6 Table 7 Reference | standard guide 10 Feed apparatus 11-1, 11-2 Roller unit 12 (12a, 12b) Feed roller 13 (13a, 13b) Drive shaft 14 (14a, 14b) Bearing 15 (15a, 15b) Bearing case 16 Connecting rod 17 Supporting pin 19 Rotating bearing 25 Elastic body 26 Spring holding pin 27 Locking hole 28 Spring receiving pin 30 Timing pulley 31 Timing belt 35 Plate material 36 V groove

Claims (2)

A reference guide (7) facing one side of a square plate (35) placed on the table (6) is provided, and the plate (35) is fed in one direction in contact with the surface of the plate (35). A bearing provided with a feed roller (12), a drive shaft (13) for rotating the feed roller (12) at the axial center of the feed roller (12), and rotatably supporting the drive shaft (13) (14) is provided, the bearing (14) is rotatably provided on the frame (2) via a fulcrum pin (17) orthogonal to the surface of the plate (35), and the drive shaft (13) is provided. An elastic body (25) that rotates and urges in one direction around the fulcrum pin (17) is provided, and the rotation direction of the drive shaft (13) by the elastic body (25) depends on the feed roller (12). Sends the plate material (35) in one direction to the plate material (35). Id (7) processing machine of sheet material feeding apparatus being characterized in that a direction to impart the direction of the component force. A reference guide (7) facing one side of a square plate (35) placed on the table (6) is provided, and contacts the upper and lower surfaces of the plate (35) so that the plate (35) is oriented in one direction. A pair of upper and lower feed rollers (12a, 12b) is provided, and a drive shaft (13a, 13b) for rotating the feed rollers (12a, 12b) is provided at the axial center of each feed roller (12a, 12b). Bearings (14a, 14b) for rotatably supporting the drive shafts (13a, 13b) are provided, and the bearings (14a, 14b) are provided via fulcrum pins (17) orthogonal to the surface of the plate member (35). An elastic body (25) is provided on the frame (2) so as to be rotatable, and the drive shafts (13a, 13b) are urged to rotate in one direction around the fulcrum pin (17). Each drive shaft (1) according to (25) The rotation direction of a, 13b) is a direction in which component force in the direction of the reference guide (7) is applied to the plate material (35) when the feed rollers (12a, 12b) feed the plate material (35) in one direction. A plate material feeding device for a processing machine, characterized in that

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