JP3490157B2 - Work holding device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work holding device used for printing electrodes on the surface of a ceramic electronic component or the like, which is capable of performing accurate positioning in order to improve printing accuracy. The present invention relates to a work holding device that can be used.

[0002]

2. Description of the Related Art With the demand for miniaturization of electronic parts, ceramic electronic parts are used in various fields. They are,
Electrodes and resin layers are often formed by screen printing or the like on the surface of a chipped element. As the element becomes smaller, accurate positioning is required to improve printing accuracy.

When processing elements one by one, it is easy to perform positioning in two directions, but positioning is difficult when processing a large number of elements simultaneously in order to improve productivity. Generally, a fixed plate having a groove for accommodating the work and a movable plate for pressing the work are used.
If the outer dimensions of the work are uneven, the positioning becomes unstable accordingly. Also, many arrangements become difficult.

[0004]

SUMMARY OF THE INVENTION The present invention provides a work holding device capable of accurately performing positioning and improving the accuracy of processing. Further, the present invention provides a work holding device capable of processing a large number of works at the same time within the range of the dimensional tolerance of each element.

[0005]

According to the present invention, a metal plate for improving mechanical strength and dimensional accuracy and an elastic body such as rubber for absorbing and holding dimensional tolerance are integrated. To solve the problem of.

[0006] In a work holding device used for positioning for treating the surface of a straw, ceramic molded body, or resin molded body, a metal plate having a hole for inserting a work larger than the size of the work, and the size of the work Characterized in that the position of the hole of the metal plate and the position of the hole of the elastic body in the work insertion direction are substantially the same on one side or two sides. It is a thing.

Further, in the work holding device used for positioning for treating the surface of the ceramic molded body or the resin molded body, a hole for inserting a plurality of works larger than the dimension in the direction perpendicular to the direction in which the works are arranged is provided. It consists of a metal plate and an elastic body with holes that hold multiple works smaller than the dimension perpendicular to the direction in which the works are arranged.The position of the holes in the metal plate and the positions of the holes in the elastic body in the work insertion direction Is characterized in that one side or two sides are substantially the same.

[0008]

The work is accurately positioned on two adjacent sides of the metal plate, and the elasticity of the elastic body allows the work to be held at that position for processing.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention, (a) is a plan view and (b) is a front sectional view. This embodiment holds only one element. The metal plate 10 is formed with a hole 12 that is slightly larger than the outer dimension of the workpiece to be processed, and the workpiece is inserted into this portion. Elastic body on this metal plate
14 is integrally molded, and a hole is also formed in this elastic body.

The holes formed in the elastic body 14 are formed so that two sides thereof coincide with the two sides of the holes formed in the metal plate 10, and the other two sides are located inside the hole of the metal plate 10. It is formed so as to be located. The size of the hole of this elastic body is made slightly smaller than the outer size of the workpiece to be processed. Silicon rubber or the like can be used as the elastic body.

The work is inserted into this hole, but the metal plate 10
And the elastic body 14 are brought into contact with the corresponding two sides for positioning.
The work is pressed against the two matching sides by the remaining two elastic bodies located inside the holes of the metal plate 10.

FIG. 2 is a plan view showing another embodiment of the present invention, in which a plurality of holes having the above structure are arranged vertically and horizontally at predetermined intervals. Forming holes 22 at a predetermined interval in the metal plate 20,
An elastic body 24 is integrally molded with the metal plate 20.
The holes of the elastic body 24 are made slightly smaller than the holes of the metal plate 20, and each of them can be accurately positioned by inserting a large number of elements. The metal plate 20 is a stainless plate having a thickness of about 1 mm in order to have mechanical strength. If the mechanical strength of the metal plate is insufficient, distortion may occur when a plurality of works are inserted, and dimensional accuracy may not be ensured.

FIG. 3 is a plan view showing another embodiment of the present invention, in which a plurality of elements can be inserted into one hole. A plurality of holes 32 are formed in parallel in the metal plate 30, and an elastic body 34 is integrally molded. Also in this case, the elastic body is pressed on the other two sides so that the element is pressed on the two adjacent sides.
It is formed so that 34 sides are located inside. Since a plurality of elements are pressed to two sides, the accuracy of the holes 32 in the longitudinal direction is slightly reduced due to the variation in the element dimensions, but positioning in the other directions can be reliably performed, which is sufficient for normal use. Accuracy can be obtained.

It is desirable that the metal plate has a small coefficient of thermal expansion, but the material is not particularly limited in the case of ordinary screen printing. As the elastic body, a silicone rubber or the like that can withstand a temperature of about 100 to 150 ° C. is desirable because a drying step is performed later in the case of printing or the like.

The work holding device according to the present invention can also be used for double-sided printing. Since the work is held by the elastic body, it can be turned over and continuously printed.

Further, the hole into which the work is inserted can be changed depending on the shape of the work, and not only the square or the rectangle as in the above example, but also a circle or an ellipse can be used. In that case, the relationship between the sizes of the holes of the metal plate and the elastic body is the same, but the positional relationship may be set so that the positioning can be performed at two points. When it is sufficient to ensure the accuracy in only one direction, only one side of the metal plate and the side of the elastic body may be aligned.

[0018]

According to the present invention, positioning can be performed accurately, and a large number of elements can be positioned at the same time and can be collectively processed at the same time.

Further, since the tolerance of the outer dimension of the work can be absorbed by each hole, it is possible to prevent the tolerance from accumulating and increasing. Therefore, it becomes easy to keep the quality of the element to be processed constant.

Furthermore, if a heat-resistant elastic body is used, it is possible to continuously carry out steps such as printing and drying, and after that, it is also possible to treat the opposite surface. Therefore, there is also an effect of reducing man-hours.

[Brief description of drawings]

FIG. 1A is a plan view showing an embodiment of the present invention,
(B) is a front sectional view

FIG. 2 is a plan view showing another embodiment of the present invention.

FIG. 3 is a plan view showing another embodiment of the present invention.

[Explanation of symbols]

10, 20, 30: Metal plate 12, 22, 32: Hole 14, 24, 34: Elastic body

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields investigated (Int.Cl. ⁷ , DB name) B41F 15/16-15/32 H05K 3/12 310 H05K 3/34 505

Claims (6)

(57) [Claims] 1. In a work holding device used for positioning for treating the surface of a ceramic molded body or a resin molded body, a metal plate having a hole into which a work is inserted, the size being larger than the size of the work, and the size of the work. And a small elastic member having a hole for holding the work, and the position of the hole of the metal plate and the position of the hole of the elastic member in the work insertion direction are substantially the same on at least one side. apparatus. 2. In a work holding device used for positioning for treating the surface of a ceramic molded body or a resin molded body, a metal plate having a hole for inserting a work, which is larger than the size of the work, and a size of the work. And a small elastic member having a hole for holding the work, and the position of the hole of the metal plate and the position of the hole of the elastic member in the work insertion direction are substantially the same on two adjacent sides. Holding device. 3. The work holding device according to claim 1, wherein a plurality of holes for inserting and holding the work are arranged at a predetermined interval in one direction. 4. The work holding device according to claim 1, wherein a plurality of holes for inserting and holding the work are arranged at predetermined intervals in each of the vertical and horizontal directions. 5. A work holding device used for positioning for treating a surface of a ceramic molded body or a resin molded body, wherein a work in a direction perpendicular to a direction in which the works are arranged is arranged.
And a metal plate with holes for inserting multiple workpieces that are larger than the dimension of
Direction, which is smaller than the size of the work in the direction, and which has holes for holding a plurality of works arranged side by side. The positions of the holes of the metal plate and the positions of the holes of the elastic body in the work insertion direction are substantially aligned on at least one side. A work holding device characterized in that 6. A work holding device used for positioning for treating a surface of a ceramic molded body or a resin molded body, wherein a work in a direction perpendicular to a direction in which the works are arranged is arranged.
And a metal plate with holes for inserting multiple workpieces that are larger than the dimension of
Direction, which is smaller than the dimension of the workpiece in the direction, and has an elastic body with holes for holding a plurality of workpieces side by side. The positions of the holes of the metal plate and the positions of the elastic body in the workpiece insertion direction are almost the same on two adjacent sides. A work holding device characterized in that