JP2002033041A - Trimming method and trimming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for trimming various shadow mask plates in sort and size. SOLUTION: On the way of carrying a metal work 110 in the hoop condition, two trimming line parts 115 and 115A pinching a product in a direction crossing the longitudinal direction of the metal work are separated. Each trimming line part pinches a product part 111 with clamp parts 121, 122, 123 and 124 formed into a shape following the trimming line part, and pinches the outside of the product in both ends of the trimming line part with other clamp parts. Each clamp part of each trimming line part pinching the outside of the product and the clamp part pinching the product part are relatively moved along the product surface in the horizontal direction so as to be separated from each other, and the trimming line parts pinching the product in the direction crossing the longitudinal direction of the trimming work are torn so as to separate the product part and an unnecessary part from each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for trimming a product such as a shadow mask, and more particularly, to a method for trimming a product such as a shadow mask, a half-etched portion and a through-hole portion all around the shadow mask. The present invention relates to a trimming apparatus and method for separating a shadow mask from a single metal sheet provided with a trimming line portion for integrally connecting a shadow mask and an unnecessary portion.

[0002]

2. Description of the Related Art In recent years, mass production of a shadow mask for a color TV (cathode ray tube) has been progressing with an increase in the amount of use thereof, and depending on the purpose of use, it has been demanded to be finer and larger. Such a shadow mask is generally made of a metal plate 600 that is continuous in a band shape (see FIG. 5).
(A)), which is produced in an integrated line, and is simply made into a hoop shape and continuously formed in a strip shape.
While making 0 continuously or intermittently, plate making and etching are performed so that the outer peripheral portion of a product portion (referred to as a shadow mask) 611 of each shadow mask is held by the metal plate material 600, and The outer shape processing is performed with the shadow mask 611 imposed on 600.
(FIG. 5 (b)) Then, as shown in FIG. 5 (c), the metal plate material 600 is once cut, and each shadow mask 611 is separated from the cut metal sheet 610 (FIG. 5 (d)). ) A trimming method (off-line method) is generally adopted. The metal sheet 610 cut from the metal plate material 600 has an unnecessary metal plate portion 61 outside one shadow mask (single-sided), as shown in FIG.
5 (c) and (b) as shown in FIGS. 5 (c) and (b). As the trimming method, an outer peripheral line (also referred to as a trimming line) of a shadow mask including a half-etched portion and / or a through-hole portion is provided in advance on the outer periphery of the shadow mask by etching, and the outer peripheral line of the shadow mask (also referred to as a trimming line) is provided. The first method of holding down the product portion of the shadow mask and lifting the unnecessary metal plate portion 612 and separating the metal plate portion 612 from the product portion by using a holding mold suitable for the above-mentioned method, or an apparatus that is not a manual device but an unnecessary device. The second method of bending the metal plate portion 612 up and down and the like have been adopted.

[0003] However, these methods require holding dies for each kind. In particular, in the second method using an apparatus,
There was a problem that the cost of the mold was high and that the changeover took time. There is also a problem that trimming takes time and is not efficient. To increase efficiency,
A trimming method has also been adopted in which dozens of shadow masks are stacked, unnecessary portions are swung, and an outer peripheral line (trimming line) of the shadow mask is broken by fatigue to separate products from unnecessary portions. According to this method, since the outer peripheral line (trimming line) of the shadow mask is broken by fatigue, a crack is generated in the cut portion, and iron powder and the like are easily generated. If this enters the perforated portion of the shadow mask, foreign matter defects occur. In addition, in the case of this method, the structure of the device becomes extremely complicated and expensive, which is not practical.

[0004]

As described above, in the trimming of the shadow mask, the apparatus can be efficiently performed, and the apparatus does not need to be replaced with the holding mold for each kind or size of the shadow mask. There was a need for something that would not be extremely complicated and that would be reliable in terms of quality. Furthermore, an in-line trimming method for separating the shadow masks 611 from the metal plate material 600 that is continuous in a belt shape as shown in FIG. 5B has been required from the viewpoint of productivity and management. Under such circumstances, the present invention provides a metal plate 600 which is continuous in a belt shape as shown in FIG.
Is a trimming method (in-line method) for separating each shadow mask 611 from the apparatus, the apparatus is not extremely complicated, the quality is reliable, the operation can be performed efficiently, and the variety of the shadow mask An object of the present invention is to provide a trimming method that does not need to replace a pressing die for each size and that is compatible with in-line, and an apparatus for performing the method.

[0005]

According to the present invention, there is provided a trimming method comprising the steps of: etching a strip-shaped continuous metal sheet;
A metal work that is formed in a strip-like shape and has a half-etched portion and a through-hole portion in the entire periphery of the product, and a trimming line portion that integrally connects the product and the unnecessary portion in the half-etched portion. And, the product is a substantially quadrangular shape having a longitudinal direction of the metal work and a side substantially orthogonal to the longitudinal direction of the metal work, and a portion of the trimming line portion along the longitudinal direction of the metal work includes only a through-hole portion. A method of separating the metal work, in the form of a hoop, in the middle of being transported in a predetermined transport direction, temporarily stopped, or while being transported in a predetermined transport direction, the longitudinal direction of the metal workpiece The two trimming lines sandwiching the product in the direction perpendicular to the workpiece are separated at the same time or one side after the other. Each trim in the direction perpendicular to the longitudinal direction of the metal work The gripping line portion is along each trimming line portion, and each grips the product portion with a clamp portion shaped along the trimming line portion, and grips the outside of the product at both ends of the trimming line portion with different clamp portions, respectively. By moving each clamp part holding the outside of the product of each trimming line part and the clamp part holding the product part along the product surface and moving in a horizontal direction relatively to each other, the metal workpiece The product is characterized in that a trimming line portion sandwiching a product in a direction perpendicular to the longitudinal direction of the product is torn, and the product portion and the unnecessary portion are separated by the trimming line portion. And, in the above, the product part is characterized by being a shadow mask, and the relative movement distance between the clamp part holding the outside of the product and the clamp part holding the product part, around the product, The gap between the notch provided on the side along the longitudinal direction of the metal work and the unnecessary portion is set to be equal to or less than the gap. Here, the hoop shape means a state in which a metal work continuous in a belt shape is stretched without loosening.

The trimming device of the present invention comprises a product formed by etching a continuous metal sheet in a strip shape, a half-etched portion and a through-hole portion all around the product, and the half-etched portion does not need the product. A metal work continuous in a strip shape, and a product having a substantially quadrangular shape having a longitudinal direction of the metal work and a side substantially orthogonal to the metal work. The portion along the longitudinal direction of the metal work of the part is a trimming device that separates the product from the metal work, which consists only of the through-hole portion, and the metal work is in a hoop shape,
In the state of being temporarily stopped during the transfer in the predetermined transfer direction, the two trimming line portions sandwiching the product in the direction orthogonal to the longitudinal direction of the metal work are separated simultaneously or one by one before and after. Along each trimming line portion in the direction orthogonal to the longitudinal direction of the trimming line, a clamp portion for gripping the product portion and a separate clamp portion for gripping the outside of the product at both ends of the trimming line portion are separately provided. The clamps holding the outside of the product at both ends of the trimming line and the clamps holding the product can move relatively along the product surface in the horizontal direction and away from each other. It is a feature. Alternatively, the trimming apparatus of the present invention comprises a product, a half-etched portion and a through-hole portion all around the product formed by etching a continuous metal sheet in a strip shape, and a product and an unnecessary portion are formed in the half-etched portion. And a trimming line part that integrally connects the metal work and the metal work continuous in a strip shape, and the product has a substantially rectangular shape having a longitudinal direction of the metal work and a side substantially orthogonal to the longitudinal direction. A portion along the longitudinal direction of the metal work is a trimming device that separates a product from the metal work, which is formed of only a through-hole portion.The metal work is formed in a hoop shape, and is conveyed in a predetermined conveyance direction. In the direction perpendicular to the longitudinal direction of the metal work, the two trimming lines sandwiching the product are separated simultaneously or one by one before and after.
Along each trimming line in the direction perpendicular to the longitudinal direction of the metal workpiece, the clamps that move in synchronization with the gripping of the product part and the outer parts of the products at both ends of the trimming line respectively synchronize with the transport. Separate moving clamps are provided separately, and each of the clamps that grip the outside of the product at both ends of each trimming line and the clamp that grips the product further move horizontally along the product surface. In addition, it is characterized by being able to relatively move away from each other. In the above, the product part is a shadow mask.

[0007]

According to the trimming method of the present invention, a metal sheet continuous in a strip shape is etched by such a structure, and the trimming method comprises a half-etched portion and a through-hole portion all around the product. A metal work that is continuous in a strip shape and has a trimming line portion that integrally connects a product and an unnecessary portion in a half-etched portion, and the product has two sides that are substantially orthogonal to the longitudinal direction of the metal work. It is a substantially square shape, and the portion along the longitudinal direction of the metal work of the trimming line portion is only a through hole portion. This is a trimming method for separating the product from the metal work, the apparatus is not extremely complicated, This makes it possible to provide a trimming method which is reliable in terms of efficiency, can perform the work efficiently, and can cope with various kinds or sizes of products. More specifically, the metal plate material 6 shown in FIG.
A trimming method (in-line method) for separating each shadow mask 611 from 00, the apparatus is not extremely complicated, the quality is reliable, the operation can be performed efficiently, and the variety of the shadow mask is In addition, it is possible to provide an in-line compatible trimming method that does not require changing the pressing die for each size. In the manufacture of shadow masks, the in-line separation method has become possible at a practical level. Specifically, while the metal workpiece is in the form of a hoop and is being transported in a predetermined transport direction, while being temporarily stopped, or while being transported in a predetermined transport direction,
2 sandwiching the product in the direction perpendicular to the longitudinal direction of the metal work
One trimming line part is separated simultaneously or one side before and after, and each trimming line part in the direction orthogonal to the longitudinal direction of the metal work is along each trimming line part, and the product part is along the trimming line part, respectively. Clamps that grip the outside of the product at both ends of the trimming line portion and grip the outside of the product at each trimming line portion, and clamp the product portion. Parts, respectively, along the product surface, in the horizontal direction, relative to each other to move away from each other, in the direction perpendicular to the longitudinal direction of the metal work, tearing the trimming line portion sandwiching the product, to the trimming line portion This is achieved by separating the product section from the unnecessary section. This is effective when the product part is an etched shadow mask.Especially, the moving distance of the clamp part holding the outside of the product is provided on the side along the longitudinal direction of the metal work around the product. The gap between the notch and the unnecessary portion is set to be equal to or less than the gap between the notch and the unnecessary portion, thereby preventing occurrence of a defect due to collision of the notch.

In the trimming method of the present invention, unlike the method in which the outer peripheral line (trimming line) of the shadow mask is fatigue-ruptured, iron powder hardly occurs during trimming. In particular, just grasp the outside of the trimming line, do not move relatively,
By pulling only the product portion to separate the product from the unnecessary portion, the transfer accuracy of the hoop is not affected. Further, since the breaking force can be reduced, it is possible to perform trimming without slippage between the product and the clamp with a gripping force that does not cause indentation.

Incidentally, in order to facilitate the tear separation, an impact load may be applied to the tear separation portion using a vibration member such as an air vibrator, or an ultrasonic vibration may be applied using a vibrator or the like.

[0010] The trimming apparatus of the present invention, having such a structure, comprises a product formed by etching a continuous metal sheet in a strip shape, a half-etched portion and a through-hole portion all around the product. , The trimming line part that integrally connects the product and the unnecessary part with the half etching part,
A metal work that is continuous in a strip shape and the product has a substantially rectangular shape having two sides substantially perpendicular to the longitudinal direction of the metal work, and a portion along the longitudinal direction of the metal work of the trimming line portion is a through hole. This is a trimming device that separates the product from the metal work consisting only of parts. The device does not become extremely complicated, the quality is reliable, and the work can be performed efficiently. In addition, it is possible to provide a trimming device that can correspond to each size. Specifically, in the production of shadow masks, it is possible to provide a practical level of in-line separation method, and it is possible to provide a trimming device that does not require a holding die for each product type, unlike conventional trimming on sheets (sheets). And

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for trimming a shadow mask according to the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram showing one embodiment of a trimming method according to the present invention, FIG. 2 is a schematic configuration diagram of a first embodiment of a trimming device according to the present invention, and FIG. FIG. 4 is a schematic configuration diagram of a second example of the embodiment of the trimming device, and FIG. 4 is a diagram for explaining a trimming line portion. FIG.
(B) and FIG. 4 (c) are D1-D of FIG. 4 (a), respectively.
It is sectional drawing in 2, D3-D4. 1 to 3 indicate the direction of movement (direction of force) of the clamp portion during trimming, and the thin line arrow indicates the transport direction. 1 to 4, 110 is a metal sheet, 1
11 is a product (shadow mask), 112 is an unnecessary part, 11
5, 115A are trimming line portions, 116 is an intermittent half portion, 117 is a through hole portion, 121, 122, 123, 12
4 is a clamp portion, 190 is a material portion (steel material), 191 is a half portion, 192 is a penetrating portion, 211, 212, 221, 2
22 is a g clamp part, 211U, 212U, 221U,
222U is an upper clamp part, 211D, 212D, 221
D and 222D are lower clamp parts, 230 is a belt conveyor, 231 is a rotating roll, 232 is a belt, 240 is a belt conveyor, 241 is a rotating roll, 242 is a belt,
250, 255, 257 are positioning rolls (guide rolls); 310, 320 are trimming units, 311;
312, 321, and 322 are clamping parts, 311U, and 31
2U, 321U, 322U are upper clamp parts, 311D,
312D, 321D and 322D are lower clamp parts, 330
Is a belt conveyor, 331 is a rotating roll, 332 is a belt, 340 is a belt conveyor, 341 is a rotating roll,
42 is a belt, 350 and 357 are positioning rolls (guide rolls).

First, an example of an embodiment of a trimming method according to the present invention will be described. In this example, a metal sheet (corresponding to 600 in FIG. 5A) continuous in a strip shape is etched to form a substantially square shadow mask as a product 111, a half-etched portion and a through hole in the entire periphery of the product. A trimming method for separating a shadow mask (product) 111 from a strip-shaped continuous metal work 110 provided with a trimming line portion 115 for integrally connecting the product 111 and the unnecessary portion 112 in a half-etched portion. It is. In addition, the outer periphery of the shadow mask (hereinafter, also simply referred to as a side) has a longitudinal direction of the metal work 110 and a side substantially orthogonal thereto, and a portion of the trimming line portion 115 along the longitudinal direction of the metal work 120 is It consists only of a through hole. This example will be described briefly with reference to FIG. First, the metal workpiece 110 is formed in a hoop shape, while being transported in a predetermined transport direction, in a temporarily stopped state, or while being transported in a predetermined transport direction, in a direction orthogonal to the longitudinal direction of the metal workpiece 110, Of the two trimming line portions 115A sandwiching the product, they are gripped by the clamp portions 121 and 122 along the trimming line portion on the rear side in the transport direction. Clamp part 1
Reference numeral 21 denotes two clamp portions which respectively hold the outside of the product at both ends of the trimming line portion.
Is a clamp portion for gripping a product portion having a shape along the trimming line portion. Then, in this state, two clamp portions 121 on both ends of the trimming line, which grip the outside of the product 111, are clamped by the clamp portions 12 which grip the product portion.
The two parts are moved horizontally and away from each other along the product surface, so that the trimming line portion 115A sandwiching the product in the direction perpendicular to the longitudinal direction of the metal work 110 is trimmed on the rear side in the transport direction. Tearing the line. (Figure 1
(A)) Then, from the metal work 110 to the clamp 12
After separating the metal workpieces 110 and 122, the metal workpiece 110 is formed in a hoop shape, and is transported in a predetermined transport direction. Of the two trimming line portions 115A sandwiching the product in the direction orthogonal to
Grab at 24. The clamp portions 124 are two clamp portions that respectively grip the outside of the product at both ends of the trimming line portion, and the clamp portion 123 is a clamp portion that grips a product portion having a shape along the trimming line portion. Next, the clamp portion 123 holding the product portion is moved away from the clamp 124 holding the product portion in the horizontal direction along the product surface so as to be perpendicular to the longitudinal direction of the metal workpiece 110. In the trimming line portion 115A sandwiching the product in the direction, the trimming line portion on the front side in the transport direction is torn. (FIG. 1B) Since the portion of the trimming line portion 115 along the longitudinal direction of the metal work 120 is formed only of the through-hole portion, the product is sandwiched in the direction orthogonal to the longitudinal direction of the metal work 110 in this manner. The two trimming line portions 115A (trimming line portions on the front and rear sides in the transport direction) are torn,
The product part 111 is separated from the metal work 110. still,
The clamp parts 121 to 124 are provided with trimming line parts 115A.
The metal work 110 is sandwiched and gripped from both sides thereof.

In this embodiment, the clamp portions 121, 122, 123, 1 are set at a speed corresponding to the transport speed (including the case of 0).
24, while holding this state, and further sandwiching the trimming line portions in each of the trimming line portions 115A sandwiching the product in the direction orthogonal to the longitudinal direction of the metal work 110 as described above. By moving the clamp parts away from each other, the trimming line part 115A sandwiching the product in the direction perpendicular to the longitudinal direction of the metal work 110 is torn. In some cases, the movement to separate the clamp portions sandwiching each trimming line portion from each other is different from the present example shown in FIG. 1, and the clamp portion (1 in FIG.
21 or 124), or both a clamp portion (corresponding to 122 and 123 in FIG. 1) for holding the product portion and a clamp portion (corresponding to 121 and 124 in FIG. 1) for holding an unnecessary portion outside the product. You may move it.

Here, the metal work 110 shown in FIG.
The trimming line portion 115 will be further described with reference to FIG. FIG. 4A is a diagram showing a peripheral area of one product (shadow mass) 111 of the metal work 110, and FIG. 4B is a cross-sectional view taken along line D1-D2 of FIG. (C) is a cross-sectional view of the intermittent half part 116 in the half-etched part of D3-D4.
When the trimming method shown in FIG. 1 is performed, FIG.
(A) As shown in FIG.
The trimming line along the longitudinal direction of 0 is a through hole. By doing so, the two trimming line portions 115A (the trimming line portions on the front and rear sides in the transport direction) sandwiching the product in the direction orthogonal to the longitudinal direction of the metal work 110 are torn, so that the product portion 111 Is separated from the metal work 110 over the entire circumference.

In this embodiment, two trimming line portions 115 sandwiching a product in a direction perpendicular to the longitudinal direction of the metal work 110 are used.
A is separated forward and backward one side at a time. As a modified example, two trimming line portions 115A sandwiching a product may be separated at the same time. Also in the case of this modification, the separating operation in each trimming line portion 115A is basically the same as that of the present example, and the description is omitted.

Next, an embodiment of the trimming apparatus of the present invention will be described. First, a first embodiment of the trimming device according to the present invention will be described with reference to FIG.
The trimming apparatus of the first example is configured by etching a metal sheet that is continuous in a strip shape, and includes a shadow mask as a product 111, a half-etched portion and a through-hole portion all around the product, and a half-etched portion is formed. A trimming line portion 115 for integrally connecting the product and the unnecessary portion is provided with a strip-shaped continuous metal work 110, and a trimming device for separating a shadow mask as a product. This is a device that separates the shadow mask, which is the product 111, from the metal work 110 in a state of being temporarily stopped (transport speed 0) during the transport in the transport direction of (1). The trimming operation is described in FIG.
This is performed as in the case of the trimming method shown in FIG. The clamp parts 221 and 222 are
Of the two trimming line portions (corresponding to 115A in FIG. 1) sandwiching the product in the direction perpendicular to the longitudinal direction of the metal work 110 of the product portion (shadow mask) 111 to be trimmed, Clamp portions 211 and 212 are provided along two trimming line portions (corresponding to 115A in FIG. 1) of the product portion (shadow mask) 111 to be trimmed in the direction orthogonal to the longitudinal direction of the metal work 110. Of these, the clamp portions are provided along the trimming line portion on the front side in the transport direction, and each of the clamp portions is fixed so as to be able to move in position for tearing. Clamp parts 211, 212, 221, 22
2 is an upper clamp portion 211U, a lower clamp portion 211D, an upper clamp portion 212U, and a lower clamp portion 212, respectively.
D, a metal work is gripped by the upper clamp 221U, the lower clamp 221D, the upper clamp 222U, and the lower clamp 222D. In addition, the clamp part 211 shown in FIG.
Reference numerals 222 denote the clamp parts 124 and 1 shown in FIG.
21 and two are provided separately.
The operation of each clamp unit can be performed by an air cylinder or the like. The belt conveyor 230 is a metal work 11
0, which receives the shadow mask, which is the product 111 separated from the metal work 110, and conveys it to the belt conveyor 240. The positioning rolls (guide rolls) 250 and 255 are for determining the horizontal position of the metal work and for forming a storage for retaining the metal work 110 between the two rolls. The roll 257 is a turn roll for transporting the unnecessary portion 112 continuous in a belt shape in a predetermined direction.

Next, a second embodiment of the trimming device according to the present invention will be described with reference to FIG. The trimming apparatus of the second example is configured by etching a metal sheet that is continuous in a strip shape, and includes a shadow mask that is a product 111, a half-etched portion and a through-hole portion all around the product, and a half-etched portion. A trimming line portion 115 for integrally connecting a product and an unnecessary portion is provided with a metal work 110 continuous in a strip shape, and a trimming device for separating a shadow mask, which is a product, using a metal work 110.
Is a device for separating the shadow mask, which is the product 111, from the metal workpiece 110 while transporting the product in a hoop shape in a predetermined transport direction. The trimming operation is performed as in the above-described trimming method shown in FIG. 1 or a modification thereof, and a description thereof will be omitted. Trimming unit 3
Reference numerals 10 and 320 denote units which can move in accordance with the transport speed (at the same speed as the transport speed).
312 is fixed to the trimming unit 310, and the clamps 321 and 322 are fixed to the trimming unit 320. W1 and W2 are the transfer direction movement ranges of the trimming units 310 and 320, respectively. The clamps 311, 312, 321, and 322 are respectively composed of an upper clamp 311 U, a lower clamp 311 D, an upper clamp 312 U, a lower clamp 312 D, an upper clamp 321 U, a lower clamp 321 D, and an upper clamp 3.
22U and the lower clamp portion 322D sandwich the metal work from both sides thereof. Clamp part 321,
322 is a product part (shadow mask) 1 to be trimmed.
11 in the direction perpendicular to the longitudinal direction of the metal work 110,
Of the two trimming line portions (corresponding to 115A in FIG. 1) sandwiching the product, provided along the trimming line portion on the rear side in the transport direction, the clamp portions 311 and 312 are formed of metal of the product portion (shadow mask) 111 to be trimmed. Of the two trimming line portions (equivalent to 115A in FIG. 1) sandwiching the product in the direction orthogonal to the longitudinal direction of the work 110, the trimming line portions are provided along the trimming line portion on the front side in the transport direction. It is fixed so that it can be moved for tearing. In addition, the clamp part 311 shown in FIG.
322 are the clamp parts 124, 1 shown in FIG.
21 and two are provided separately.
The operation of each clamp unit can be performed by an air cylinder or the like. And the clamp parts 312, 321
Apart from the movement of the trimming unit, the position for tearing can be moved. As in the first example, the belt conveyor 330 is provided below the metal work 110, receives the shadow mask that is the product 111 separated from the metal work 110, and transports it to the belt conveyor 340. Positioning roll (guide roll) 350
Is for determining the horizontal position of the metal work. The roll 357 is a turn roll for transporting the unnecessary portion 112 continuous in a belt shape in a predetermined direction.

[0018]

As described above, according to the present invention, a strip-shaped mask having a shadow mask as a product and a trimming line portion for integrally connecting the shadow mask and an unnecessary portion is provided on the entire periphery of the shadow mask. A trimming method that separates the shadow mask from the continuous metal work, which is reliable in terms of quality, can perform the work efficiently, and is compatible with each type or size of the shadow mask. It became possible to provide a device for carrying out.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an example of an embodiment of a trimming method according to the present invention.

FIG. 2 is a schematic configuration diagram of a first example of an embodiment of a trimming device of the present invention.

FIG. 3 is a schematic configuration diagram of a second example of the embodiment of the trimming device of the present invention.

FIG. 4 is a diagram for explaining a trimming line portion;

FIG. 5 is a view for explaining a manufacturing method and separation of a shadow mask;

[Explanation of symbols]

110 Metal sheet 111 Product (shadow mask) 112 Unnecessary part 115, 115A Trimming line part 116 Intermittent half part 117 Through hole part 121, 122, 123, 124 Clamp part 190 Material part (steel material) 191 Half part 192 Penetrating part 211, 212, 221, 222 G clamp part 211U, 212U, 221U, 222U Upper clamp part 211D, 212D, 221D, 222D Lower clamp part 230 Belt conveyor 231 Rotary roll 232 Belt 240 Belt conveyor 241 Rotary roll 242 Belt 250, 255, 257 Positioning roll (guide) Roll) 310, 320 Trimming unit 311, 312, 321, 322 Clamp unit 311U, 312U, 321U, 322U Upper clamp unit 311D, 312D, 321D, 322D Lower Clamping Unit 330 Belt Conveyor 331 Rotating Roll 332 Belt 340 Belt Conveyor 341 Rotating Roll 342 Belt 350, 357 Positioning Roll (Guide Roll) 600 Metal Plate Material 610 Metal Sheet 611 Product part of a shadow mask (this is called a shadow mask) 611A Perforated part 612 Unnecessary metal plate part 612 614 Trimming line part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Keiichi Kotani 1-1-1 Ichigaya-Kagacho, Shinjuku-ku, Tokyo F-term in Dai Nippon Printing Co., Ltd. (reference) 5C027 HH14

Claims (6)

[Claims] 1. A strip-shaped continuous metal sheet is etched to form a product, a half-etched portion and a through-hole portion all around the product, and the product and an unnecessary portion are integrally connected at the half-etched portion. And the trimming line
A metal work continuous in a strip shape provided, and the product has a substantially rectangular shape having a side substantially perpendicular to the longitudinal direction of the metal work, and a portion along the longitudinal direction of the metal work of the trimming line portion is a through hole. A trimming method for separating a product from a metal workpiece, the metal workpiece being formed in a hoop shape, being transported in a predetermined transport direction, temporarily stopped, or in a predetermined transport direction. The two trimming line portions sandwiching the product in the direction perpendicular to the longitudinal direction of the metal work are separated simultaneously or one by one back and forth while being transported to each other. Each trimming line in the direction perpendicular to the longitudinal direction of the metal work The part is held along each trimming line part, the product part is gripped by a clamp part having a shape along the trimming line part, and the product at both ends of the trimming line part Grasp the outside with separate clamps, and separate the clamps holding the outside of the product of each trimming line and the clamps holding the product in the horizontal direction along the product surface. By relatively moving, tearing the trimming line between products in the direction perpendicular to the longitudinal direction of the metal work,
A trimming method, comprising separating a product part and an unnecessary part at a trimming line part. 2. The trimming method according to claim 1, wherein the product portion is a shadow mask. 3. The apparatus according to claim 2, wherein a relative moving distance between the clamp portion holding the outside of the product and the clamp portion holding the product portion is provided on a side around the product along the longitudinal direction of the metal work. A trimming method characterized in that the gap is not more than the gap between the notch and the unnecessary portion. 4. A strip-shaped continuous metal sheet is etched to form a product, a half-etched portion and a through-hole portion all around the product, and the half-etched portion integrally connects the product and unnecessary portions. And the trimming line
It is a metal work that is continuous in a strip shape, and the product has a substantially rectangular shape having a side substantially orthogonal to the longitudinal direction of the metal work, and a portion of the trimming line portion along the longitudinal direction of the metal work penetrates. A trimming device for separating a product from a metal work, which is formed only of a hole, wherein the metal work is formed into a hoop, and is conveyed in a predetermined conveyance direction. In the direction orthogonal to the direction, two trimming line parts sandwiching the product are separated simultaneously or one side after the other, and are separated along the respective trimming line parts in the direction orthogonal to the longitudinal direction of the metal work. Separate clamps are provided for gripping the outside of the product at both ends of the trimming line, and separate clamps for holding the outside of the product at both ends of the trimming line. And each clamp unit grabbed, respectively, and is grabbed clamping unit the product portion, along the product surface, in a horizontal direction, the trimming apparatus which is characterized in that as it can move relative to leave each other. 5. A strip-shaped continuous metal sheet is etched to form a product, a half-etched portion and a through-hole portion all around the product, and the product and the unnecessary portion are integrally connected at the half-etched portion. And the trimming line
It is a metal work that is continuous in a strip shape, and the product has a substantially rectangular shape having a side substantially orthogonal to the longitudinal direction of the metal work, and a portion of the trimming line portion along the longitudinal direction of the metal work penetrates. It is a trimming device for separating a product from a metal work consisting of only a hole portion, wherein the metal work is formed in a hoop shape, while being conveyed in a predetermined conveyance direction, in a direction orthogonal to the longitudinal direction of the metal work, The two trimming lines sandwiching the product are separated simultaneously or one by one before and after, and along each trimming line in the direction orthogonal to the longitudinal direction of the metal work, each grips the product part and moves in synchronization with the transport Separate clamps and separate clamps that grip the outside of the product at both ends of the trimming line and move in synchronization with the conveyance are provided separately. A trimming device characterized in that each of the clamps gripping the outside of the product and the clamps gripping the product are further movable in a horizontal direction along the product surface so as to move away from each other. . 6. The trimming device according to claim 4, wherein the product portion is a shadow mask.