JP3673311B2 - Ceramic substrate break device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for breaking a ceramic substrate into a rod-shaped substrate or a chip substrate when manufacturing a chip-type electronic component such as a chip-type resistor.
[0002]
[Prior art]
In general, when manufacturing a chip resistor, as shown in FIG. 1, a plurality of break vertical stripes A1 and transverse stripes A2 are formed in a lattice pattern on the surface of a ceramic substrate A, and the ceramic resistor is formed. A resistance film and an upper electrode film in a chip resistor are formed on the surface of the substrate A, and a lower electrode film is formed on the back surface, and then the ceramic substrate A is formed in a plurality of lines along the vertical stripes A1. After breaking the rod-shaped ceramic substrate A3, and then forming side electrode films on both left and right side surfaces in the longitudinal direction of each rod-shaped ceramic substrate A3, each rod-shaped ceramic substrate A3 is placed in the transverse stripe groove A2. A method of breaking along a plurality of chip substrates A4 is employed.
[0003]
Conventionally, when the ceramic substrate A is broken for each rod-shaped ceramic substrate A3 along each vertical stripe A1 and this rod-shaped ceramic substrate A3 is broken for each chip substrate A4 along each horizontal stripe A2, For example, as described in Japanese Patent Publication No. 63-32602 and Japanese Utility Model Publication No. 3-56004, the ceramic substrate A or the rod-shaped ceramic substrate A3 is pressed against a large-diameter roller by a small-diameter roller. Alternatively, as described in Japanese Utility Model Publication No. 6-44081, etc., the rod-shaped ceramic substrate A3 is pressed by a small-diameter roller against the endless belt. Yes.
[0004]
[Problems to be solved by the invention]
However, the conventional break is caused by the pressing of a small-diameter roller, and the pressing force cannot be concentrated on the vertical streak groove A1 or the horizontal streak groove A2 by pressing the arc surface. As shown in FIG. 3, the fracture surface when the break occurs should be perpendicular to the front and back surfaces of the ceramic substrates A and A3. The front and back surfaces of the ceramic substrates A and A3 are as shown in FIG. There is a problem that the upper electrode film on the surface of the ceramic substrates A and A3 and the lower electrode film on the back surface are likely to be chipped, and the rate of defective products is considerably high. It was.
[0005]
In addition, when the ceramic substrate A is broken into the rod-shaped ceramic substrate A3 along each longitudinal groove A1, the rod-shaped ceramic substrate A3 is frequently broken at the position of the horizontal stripe groove A2 and becomes short. There is also a problem that it becomes difficult to form the side electrode film on the short rod-shaped ceramic substrate A3.
[0006]
An object of the present invention is to provide a break device that solves these problems.
[0007]
[Means for Solving the Problems]
In order to achieve this technical problem, the present invention
“A planar table on which a ceramic substrate having a plurality of break streak grooves provided at a constant pitch interval is placed on the top surface and the ceramic substrates are sequentially transferred in this state is viewed from the transfer direction. Te, one side inclined to become lower of the left and right sides of the transfer direction, above the flat table, while providing a pressing means for pressing the ceramic substrate relative to the table, in the transport direction of the table A break body is disposed at the front end so as to extend in parallel with the upper surface of the table, and the length of the break body is such that the tip of the ceramic substrate on the upper surface of the table fits over the entire length of the side surface on the table side. set so that the longitudinal direction of the one open end to the distal end located below of both ends in the break body in the long groove, the elongated groove in The depth of the long groove is made equal to the distance between the break streak grooves in the ceramic substrate, and the break body is connected to the inner surface on the back surface side of the ceramic substrate and the break surface of both inner surfaces of the long groove. A rod-shaped ceramic substrate that is configured to rotate around this center line with the intersection line with the side surface of the table side of the body as a center line, in addition, It is configured to slide down in the longitudinal direction in the long groove . "
It was made the composition called.
[0008]
[Operation and effect of the invention]
In this configuration, when the tip of the ceramic substrate on the upper surface of the table fits into the long groove in the break body, the pressing means presses the ceramic substrate against the table, and then the break body rotates, whereby the ceramic body is rotated. The substrate is broken into a portion on the upper surface of the table and a portion fitted in the long groove in the break body.
[0009]
Then, the substrate that has been broken while being fitted in the long groove in the break body is discharged so as to slide in the longitudinal direction in the long groove because the break body is inclined in the same manner as the table. .
[0010]
In this case, the depth of the long groove in the break body is made equal to the distance between the break streak grooves in the ceramic substrate, while the break body is formed on the inner surface on the back surface side of the ceramic substrate among the two inner surfaces in the long groove. And the break line on the table side surface of the break body as a center line, it is configured to rotate around this center line, the force to break at the location of the break streak in the ceramic substrate You can concentrate.
[0011]
Therefore, according to the present invention, it is possible to reliably reduce breakage of the fracture surface in a state inclined with respect to the front surface and the back surface, and when the upper electrode film and / or the lower electrode film are formed on the ceramic substrate. In addition, since the occurrence of chipping of the upper electrode film and / or the lower electrode film can be surely reduced, the generation rate of defective products can be greatly reduced. When the ceramic substrate is broken into a rod-shaped ceramic substrate by being broken while being fitted in the long groove in the body and then being discharged so as to slide in the longitudinal direction in the long groove, the rod-shaped ceramic Since it can greatly reduce the occurrence of folds in the middle of the board, it is easy to handle the rod-shaped ceramic board after a break. A.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. 4 to 9 showing a case where the ceramic substrate A is broken into a rod-shaped ceramic substrate A3 along each vertical stripe A1.
[0013]
In this figure, reference numeral 1 denotes a planar table that is transferred in the direction of arrow B in a state in which a plurality of ceramic substrates A are arranged in a line, and the upper surface 1a of the table 1 has its transfer direction. Is inclined with respect to the horizontal surface 2 by an angle θ as appropriate so that one of the left and right sides of the horizontal surface 2 becomes lower.
[0014]
A pressing body 3 for pressing the ceramic substrate A against the upper surface of the table 1 is disposed above the table 1.
[0015]
Reference numeral 4 denotes a break body arranged at the front end in the transfer direction of the table 1 so as to extend in parallel with the upper surface 1a of the table 1, and the side surface 4a on the table 1 side of the break body 4 has the ceramic A long groove 5 having a length that fits the front end of the substrate A over the entire length thereof is provided so that one end in the longitudinal direction of the long groove 5 opens to a lower end of the both ends of the break body 4.
[0016]
And while making the depth dimension of the long groove 5 in the said break body 4 equal to the space | interval P of each vertical streak groove A1 in the said ceramic substrate A, both inner side surface 5a in the long groove 5 is formed in one end of this break body 4. 5b, a support shaft 6 having a center line 6a as an intersection line between the inner surface 5a on the back surface side of the ceramic substrate A and the side surface 4a on the table 1 side of the break body 4 is fixed, and the support shaft 6 is a bearing portion. 7, the shaft 6 is rotatably supported around the center line 6a, and the support shaft 6 is swung as shown by an arrow C around the axis 6a by a rotation driving means such as a pulse motor 8. Configure to rotate.
[0017]
In this configuration, when the tip of the ceramic substrate A on the upper surface of the table 1 is fitted into the long groove 5 in the break body 4, the pressing body 3 descends and presses the ceramic substrate A against the table 1. When the break body 4 rotates around the axis 6a of the support shaft 6, the ceramic substrate A is a rod-shaped ceramic substrate A3 fitted in the long groove 5 in the break body 4 of the ceramic substrate A. Is broken along the vertical streak groove A1.
[0018]
In this case, the depth dimension of the long groove 5 in the break body 4 is made equal to the interval of the break vertical groove A1 in the ceramic substrate A, while the break body 4 is made to have both inner side surfaces 5a, 5b in the long groove 5. Among them, the intersection line between the inner side surface 5a on the back surface side of the ceramic substrate A and the side surface 4a on the table 1 side in the break body 4 is defined as a center line 6a, and is configured to rotate around the center line 6a. Since the force for breaking can be concentrated at the location of the break vertical groove A1 in the ceramic substrate A, it is possible to reliably reduce the breakage in a state where the fracture surface is inclined with respect to the front surface and the back surface. In addition, when the upper electrode film and / or the lower electrode film is formed on the ceramic substrate A, the upper electrode film and / or the lower electrode film Injury it can be reliably reduced the occurrence.
[0019]
Further, the ceramic substrate A is broken with the portion of the rod-shaped ceramic substrate A3 at the tip thereof being fitted in the long groove 5 in the break body 4, so that the ceramic substrate A is broken along the vertical stripe groove A1. In the case of making a break in the substrate A3, the occurrence of a break in the middle of the rod-shaped ceramic substrate A3 can be greatly reduced.
[0020]
As described above, the rod-shaped ceramic substrate A3 that has been broken while being fitted in the long groove 5 in the break body 4 has the break body 4 inclined by an angle θ as appropriate with respect to the horizontal plane 2. 4 is slid in the longitudinal direction of the long groove 5 and discharged so that the belt conveyor 9 provided on the side of the long groove 5 falls.
[0021]
Incidentally, when discharged to slide the rod-shaped ceramic substrate A3 which is a break from the long groove within 5 at the break member 4 in its longitudinal direction it may be configured to perform the assist by the blowing air.
[0022]
Moreover, although the said embodiment showed the case where the ceramic substrate A was broken for every rod-shaped ceramic substrate A3 along the vertical streak groove A1, this invention is not limited to this, The said rod-shaped ceramic substrate A3 is a horizontal streak groove. Needless to say, the present invention can also be applied to the case where the chip substrate A4 breaks along A2.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a manufacturing process of a chip resistor.
FIG. 2 is a perspective view showing a form of a break in a ceramic substrate.
FIG. 3 is a perspective view showing a form of a break in a ceramic substrate.
FIG. 4 is a plan view showing an embodiment in the present invention.
5 is a cross-sectional view taken along the line VV in FIG. 4;
6 is a cross-sectional view taken along line VI-VI in FIG.
7 is an enlarged sectional view taken along the line VII-VII in FIG. 4;
FIG. 8 is a diagram illustrating an operation state of FIG.
FIG. 9 is an enlarged perspective view showing a main part.
[Explanation of symbols]
A ceramic substrate A1, 2 streak groove for break A3 rod-shaped ceramic substrate A4 chip substrate 1 table 1a table top surface 3 holding body 4 break body 4a side surface of break body 5 long groove 5a, 5b inner surface of long groove 6 support shaft 6a center line 7 Bearing section 8 Pulse motor

Claims (1)

A planar table on which a ceramic substrate having a plurality of break streak grooves provided at regular pitch intervals is placed on the upper surface and the ceramic substrates are sequentially transferred in this state is viewed from the transfer direction. , Inclined so that one of the left and right sides in the transfer direction is lowered, and provided with pressing means for pressing the ceramic substrate against the table above the planar table, the front end of the table in the transfer direction The break body is disposed so as to extend parallel to the upper surface of the table, and the length of the break body is such that the tip of the ceramic substrate on the upper surface of the table fits over the entire length of the side surface on the table side. provided long groove which is, as one longitudinal end of the elongated groove is opened to the distal end located below of both ends in the break member The depth of the long groove is made equal to the distance between the break streak grooves in the ceramic substrate, and the break body is further divided into the inner surface on the back surface side of the ceramic substrate and the break body of both inner surfaces of the long groove. The rod-shaped ceramic substrate is configured to rotate around the center line with the intersection line with the side surface on the side of the table as the center line. A ceramic substrate break device configured to slide down in a longitudinal direction in a long groove .

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