Jig for identifying defective DCB substrate and identification method thereof

Abstract

The invention discloses a jig for identifying a DCB substrate defective product and an identification method of the jig. A jig for identifying defective DCB substrates comprises a bottom plate, a first sliding plate capable of moving along a first straight line is mounted on the bottom plate, and a second sliding plate capable of moving along a second straight line is mounted on the second sliding plate; the center of the first sliding plate and the center of the second sliding plate are each provided with a hollowed-out structure. The second sliding plate is provided with a limiting groove used for containing a product, the product comprises a metal ring, a transparent supporting film is fixed to the metal ring, and a copper-clad ceramic substrate is installed on the transparent supporting film. The outer edge of the bottom plate is connected with an infrared light-emitting mechanism through an external bracket; an air cylinder is installed in the center of the bottom plate, a telescopic rod of the air cylinder is connected with a marking pen, the telescopic direction of the air cylinder is the vertical direction, and the light-emitting direction of the infrared light-emitting mechanism faces the pen point of the marking pen. The position of the defective product and the position of the marking pen are determined through the infrared light-emitting mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of copper-clad ceramic substrates, and in particular to a marking device and a marking method for defective products. Background Art

[0002] When inspecting a large number of DCB substrates, it is necessary to mark the defective products found on the connected pieces. Currently, marking defective products is done manually or by AOI: inspect the front and back of the product, and mark the defective products on the front or back with a black pen on the front. However, there are the following problems in the marking process:

[0003] 1. Manual inspection

[0004] 1) Front inspection: detect defective products and mark them on the front of the product with a marker (the marking point is a black dot with a diameter of φ2~3mm). However, back inspection: after detecting defective products, they need to return to the front for marking, which has low operating efficiency.

[0005] 2) For products with a large number of consecutive pieces, such as products with a layout of 60*20 or more, it is difficult to confirm the position of defective products detected on the back when they are returned to the front for marking, and 100% position accuracy cannot be guaranteed.

[0006] 2.AOI inspection

[0007] AOI scans the product and marks the defective products after detecting them. However, the accuracy of AOI marking defective products is low, at ±2mm. The product size is small, so it is easy to mark outside the defective products, resulting in the scrapping of good products.

[0008] Currently, there is a lack of a defective product identification fixture that can improve the efficiency of product inspection and reduce the action of flipping products during the inspection of defective products. Summary of the invention

[0009] In view of the problems existing in the prior art, the present invention provides a jig for marking defective DCB substrates and a marking method thereof, which have solved at least one of the above technical problems.

[0010] The technical solution of the present invention is: a jig for marking defective DCB substrates, characterized in that it comprises a bottom plate, a first sliding plate movable along a first straight line is mounted on the bottom plate, and a second sliding plate movable along a second straight line is mounted on the second sliding plate;

[0011] The first sliding plate is slidably connected to the bottom plate along a first straight line direction, and the second sliding plate is slidably connected to the first sliding plate along a second straight line direction;

[0012] A hollow structure is provided in the center of the first sliding plate and the second sliding plate;

[0013] The second sliding plate is provided with a limiting groove for placing a product, wherein the product comprises a metal ring, a transparent supporting film is fixed to the metal ring, and a copper-clad ceramic substrate is mounted on the transparent supporting film;

[0014] The outer edge of the bottom plate is connected to an infrared light emitting mechanism via an external bracket;

[0015] A cylinder is installed in the center of the bottom plate, the telescopic rod of the cylinder is connected to a marking pen, the telescopic direction of the cylinder is vertical, and the light emitting direction of the infrared light emitting mechanism is toward the tip of the marking pen;

[0016] The infrared light emitting mechanism and the marking pen are arranged one above the other, and the product is located between the infrared light emitting mechanism and the marking pen.

[0017] The present invention determines the position of defective products and the position of the marking pen through an infrared light-emitting mechanism. Once the infrared light-emitting mechanism is positioned at the position of the defective product, the marking pen is driven by the extension and contraction of the cylinder to lift it up and mark the product. This device avoids the tediousness of turning the product over to the front for marking when the back is defective.

[0018] Further preferably, it also includes a start button for starting a single extension and retraction of the cylinder. Once the start button is touched, the start button controls the piston rod of the cylinder to extend and then reset.

[0019] It is easy to identify defective products.

[0020] Further preferably, two locking nuts arranged vertically are threadedly connected to the telescopic rod of the cylinder, a support frame is clamped between the two locking nuts arranged vertically, and the marker pen is detachably connected to the support frame.

[0021] Further preferably, the support frame comprises an upper support plate and a lower support plate arranged vertically, a vertical plate arranged vertically is connected to the same side of the upper support plate and the lower support plate, a horizontal plate is connected to the top of the vertical plate, a through hole for passing the telescopic rod of the cylinder is opened on the horizontal plate, and two locking nuts arranged vertically are clamped on the upper and lower sides of the horizontal plate;

[0022] The upper support plate and the lower support plate are provided with mounting holes for inserting the marking pen longitudinally from top to bottom.

[0023] Further preferably, the back of the product is inspected with the back side facing upwards, and once the infrared light-emitting mechanism is facing a defective product on the back side, the cylinder is controlled to extend, and the marking pen marks the corresponding front side of the product with the defective back side.

[0024] Further preferably, a first guide rail for guiding the first sliding plate to slide and a cylinder slide for driving the first sliding plate to move linearly are installed on the bottom plate, and two first guide rails are provided, and the two first guide rails are located at outer edges of opposite sides of the bottom plate;

[0025] The first sliding plate is provided with a second guide rail for guiding the second sliding plate to slide and a cylinder slide for driving the second sliding plate to move linearly. Two second guide rails are provided and are located at outer edges of opposite sides of the first sliding plate.

[0026] Further preferably, the hollow structures of the first sliding plate and the second sliding plate are both rounded rectangles, and the first sliding plate and the second sliding plate are both square frame structures.

[0027] Further preferably, the external bracket is a U-shaped bracket.

[0028] Further preferably, a camera device is installed on the external bracket, and the camera device captures the image information of the product, and the camera device transmits the image information to the control host, and the control host obtains the positioning point information of the metal ring, the contour position information of the outer contour of the copper-clad ceramic substrate, and the defective product position information according to the product image information;

[0029] The positioning point information of the metal ring is the coordinate values ​​of two specific positions on the metal ring, which are recorded as (X0, Y0) and (a, b), with (X0, Y0) as the coordinate origin, and (a, b) being constant in size and determined according to the two specific positions on the metal ring;

[0030] The contour position information is the coordinate values ​​of the two endpoints of the diagonal line of the copper-clad ceramic substrate, the coordinate values ​​of the two endpoints are recorded as (X1, Y1) and (X2, Y2), and the coordinate values ​​of the two endpoints are obtained according to the positions of the two endpoints in the picture information;

[0031] The control host has stored the layout design drawing of the copper-clad ceramic substrate in advance, and performs one-to-one positioning according to the position information of the two endpoints and the outer contour of the layout design drawing;

[0032] Once defective products are analyzed and known from the image information collected by the camera device, the position of the defective products in the layout design drawing can be located, and the position information of the defective products is recorded as (row number a, column number b), the row number and column number of the defective products on the copper-clad ceramic substrate are recorded, and the position of the defective products is marked in the corresponding layout design drawing;

[0033] The control host stores the location information of defective products.

[0034] Once a defective product that needs to be marked is determined, the first sliding plate and the second sliding plate are controlled to move, so that the infrared light emitting mechanism faces the defective product, and the camera device transmits the image of the infrared light emitting mechanism irradiating the copper-clad ceramic substrate to the control host;

[0035] The control host analyzes whether the infrared mark position on the screen matches the location information of the defective product;

[0036] If they match, the control host drives the cylinder to extend and mark the corresponding position of the copper-clad ceramic substrate;

[0037] If they do not match, the control host will send an error signal to avoid mislabeling.

[0038] The position of the defective product is marked in the image information collected by the camera device, and this position is used as the position of the defective product that needs to be marked.

[0039] A marking method for a jig used for marking defective DCB substrates, when the back of the product is facing upward for defective product inspection, the positions of the first sliding plate and the second sliding plate are controlled, and the infrared light emitting mechanism is aligned with the position of the defective product;

[0040] The marking pen is driven by the extension and retraction of the cylinder to lift up and mark defective products on the front of the product.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] 1) Through the sliding of the first sliding plate and the second sliding plate, the inspection efficiency of the product is improved, and at the same time, it can help the inspectors to prevent missed inspections, false inspections, etc. After the inspectors slide the first sliding plate to inspect one by one along the first straight line direction, they slide the second sliding plate to switch to another row, and then continue to slide the first sliding plate to inspect one by one along the first straight line direction.

[0043] 2) The infrared light-emitting mechanism is coaxial with the marker pen to ensure accurate positioning, and the cylinder is used to control the pressure of the dot coating to ensure consistent pressure at the marking point and thus consistent size of the marking point.

[0044] 3) By setting a limiting groove on the second sliding plate, it is ensured that the substrate is placed in the same position every time, which makes it easier to find abnormal products and improves production efficiency.

[0045] 4) After the DCB is split, the copper-clad ceramic substrate is supported by a metal ring and a transparent support film to facilitate fixing on the fixture to prevent contamination by dust and foreign matter. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a structural schematic diagram of a specific embodiment 1 of the present invention;

[0047] Figure 2 It is a structural schematic diagram of another perspective of the specific embodiment 1 of the present invention;

[0048] Figure 3 It is a structural schematic diagram of another perspective of the specific embodiment 1 of the present invention;

[0049] Figure 4 It is a structural schematic diagram of another perspective of the specific embodiment 1 of the present invention;

[0050] Figure 5 It is a partial structural schematic diagram of a specific embodiment 1 of the present invention;

[0051] Figure 6 It is a partial structural schematic diagram of a specific embodiment 1 of the present invention;

[0052] Figure 7 It is a schematic diagram of a partial structure of a specific embodiment 1 of the present invention without placing products;

[0053] Figure 8 This is a schematic diagram of the structure of the product of specific embodiment 1 of the present invention.

[0054] In the figure, 1 is a base plate, 2 is a first sliding plate, 3 is a second sliding plate, 4 is a cylinder, 5 is a support frame, 6 is an external bracket, 7 is a metal ring, 8 is a copper-clad ceramic substrate, and 9 is a start button. DETAILED DESCRIPTION

[0055] See also Figures 1 to 8 , Specific embodiment 1, a jig for marking defective DCB substrates, comprising a base plate 1, a first sliding plate 2 that can move along a first straight line is installed on the base plate 1, and a second sliding plate 3 that can move along a second straight line is installed on the second sliding plate 3; the first sliding plate 2 is slidably connected to the base plate 1 along the first straight line direction, and the second sliding plate 3 is slidably connected to the first sliding plate 2 along the second straight line direction; the first sliding plate 2 and the second sliding plate 3 are both provided with a hollow structure in the center; the second sliding plate 3 is provided with a limiting groove for placing a product, the product comprises a metal ring 7, the metal ring 7 is fixed with a transparent supporting film, and a copper-clad ceramic substrate 8 is installed on the transparent supporting film; the outer edge of the base plate 1 is connected to an infrared light-emitting mechanism through an external bracket 6; a cylinder 4 is installed in the center of the base plate 1, the telescopic rod of the cylinder 4 is connected to a marker pen, the telescopic direction of the cylinder 4 is vertical, and the infrared light-emitting mechanism is emitting light in the direction of the pen tip of the marker pen; the infrared light-emitting mechanism and the marker pen are arranged up and down, and the product is located between the infrared light-emitting mechanism and the marker pen. The present invention determines the position of defective products and the position of the marking pen by an infrared emitting mechanism. Once the infrared emitting mechanism is positioned at the defective product position, the marking pen is driven by the extension and contraction of the cylinder 4 to lift up the defective product position A (see Figure 8) for marking, this device avoids the tediousness of turning the product over to the front for marking due to defects on the back.

[0056] The outer diameter of the light spot emitted by the infrared light emitting mechanism is less than 1 mm. The outer diameter of the pen tip of the marker is less than 1.5 mm. The outer diameter of the mark made by the marker is less than 1.5 mm. For example, it can be 1 mm. The marking accuracy is guaranteed.

[0057] The second sliding plate is provided with a pick-up and place notch for picking up and placing products on both the front and rear sides. The pick-up and place notch is butted and connected with the limiting groove.

[0058] The first straight line direction is the left-right direction, and the second straight line direction is the front-back direction.

[0059] It also includes a start button 9 for starting the cylinder 4 to extend and retract once. Once the start button is touched, the start button controls the piston rod of the cylinder 4 to extend and then reset, so as to facilitate the identification of defective products.

[0060] The telescopic rod of the cylinder 4 is threadedly connected with two locking nuts arranged up and down, and a support frame 5 is clamped between the two locking nuts arranged up and down, and a marking pen is detachably connected to the support frame 5.

[0061] The support frame 5 includes an upper support plate and a lower support plate arranged vertically, and a vertical plate is connected to the same side of the upper support plate and the lower support plate, and a horizontal plate is connected to the top of the vertical plate. The horizontal plate is provided with a through hole for the telescopic rod passing through the cylinder 4, and two locking nuts are clamped on the upper and lower sides of the horizontal plate; the upper support plate and the lower support plate are provided with mounting holes for inserting a marker pen vertically from top to bottom.

[0062] The back of the product is inspected with the back facing upwards. Once the infrared light-emitting mechanism faces the defective product on the back, the control cylinder 4 is extended, and the marking pen marks the corresponding front side of the product with the defective back side.

[0063] A first guide rail for guiding the sliding of the first sliding plate 2 is installed on the bottom plate 1, and two first guide rails are provided, and the two first guide rails are located at the outer edges of the opposite sides (front and rear sides) of the bottom plate 1. A first slider slidably connected to the first guide rail is installed in the center of the opposite sides (front and rear sides) of the first sliding plate. A second guide rail for guiding the sliding of the second sliding plate 3 is installed on the first sliding plate 2, and two second guide rails are provided, and the two second guide rails are located at the outer edges of the opposite sides (left and right sides) of the first sliding plate 2. A second slider slidably connected to the second guide rail is installed in the center of the opposite sides (left and right sides) of the second sliding plate. This device can realize two-dimensional manual movement.

[0064] Alternatively, the sliding of the first sliding plate and the second sliding plate may also be performed by pneumatic sliding using a cylinder slide. For example, the bottom plate 1 is provided with a first guide rail for guiding the sliding of the first sliding plate 2 and a cylinder slide for driving the first sliding plate 2 to move linearly, and two first guide rails are provided, and the two first guide rails are located at the outer edges of the opposite sides of the bottom plate 1; the first sliding plate 2 is provided with a second guide rail for guiding the sliding of the second sliding plate 3 and a cylinder slide for driving the second sliding plate 3 to move linearly, and two second guide rails are provided, and the two second guide rails are located at the outer edges of the opposite sides of the first sliding plate 2.

[0065] The hollow structures of the first sliding plate 2 and the second sliding plate 3 are both rounded rectangles, and the first sliding plate 2 and the second sliding plate 3 are both square frame structures.

[0066] The external bracket 6 is a U-shaped bracket.

[0067] A camera device is installed on the external bracket. The camera device captures the image information of the product and transmits the image information to the control host. The control host obtains the positioning point information of the metal ring, the contour position information of the outer contour of the copper-clad ceramic substrate, and the defective product position information based on the product image information; the positioning point information of the metal ring is the coordinate value of two specific positions on the metal ring, recorded as (X0, Y0) and (a, b), with (X0, Y0) as the coordinate origin, (a, b) is constant, and is determined according to the two specific positions on the metal ring; the contour position information is the coordinate value of the two end points of the diagonal line of the copper-clad ceramic substrate, and the coordinate values ​​of the two end points are Recorded as (X1, Y1) and (X2, Y2), the coordinate values ​​of the two endpoints are known according to their positions in the image information; the control host has stored the layout design drawing of the copper-clad ceramic substrate in advance, and performs one-to-one positioning according to the position information of the two endpoints and the outer contour of the layout design drawing; once the defective products are analyzed and known from the image information collected by the camera device, the position of the defective products in the layout design drawing can be located, and the position information of the defective products is recorded as (row number a, column number b), the row number and column number of the defective products on the copper-clad ceramic substrate are recorded, and the position of the defective products is marked in the corresponding layout design drawing; the control host stores the position information of the defective products.

[0068] Once the defective products that need to be marked are determined, the first sliding plate and the second sliding plate are controlled to move, and then the infrared light-emitting mechanism faces the defective products. The camera device transmits the image of the infrared light-emitting mechanism irradiating the copper-clad ceramic substrate to the control host; the control host analyzes whether the marking direction of the infrared light on the screen matches the position information of the defective products; if they match, the control host drives the cylinder to extend and mark the corresponding position of the copper-clad ceramic substrate; if they do not match, the control host sends an error signal to avoid mislabeling. The position of the defective product is marked in the image information collected by the camera device, and this position is used as the position of the defective product that needs to be marked.

[0069] A marking method of a jig for marking defective DCB substrates. When the back of a product faces upward for defective product inspection, the positions of a first sliding plate and a second sliding plate are controlled, and an infrared light-emitting mechanism is aligned with the position of the defective product; a marking pen is driven by the extension and contraction of an air cylinder to lift up and mark the defective product on the front of the product.

[0070] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A fixture for marking defective DCB substrates, characterized in that: It comprises a bottom plate, a first sliding plate which can move along a first straight line is mounted on the bottom plate, and a second sliding plate which can move along a second straight line is mounted on the second sliding plate; The first sliding plate is slidably connected to the bottom plate along a first straight line direction, and the second sliding plate is slidably connected to the first sliding plate along a second straight line direction; A hollow structure is provided in the center of the first sliding plate and the second sliding plate; The second sliding plate is provided with a limiting groove for placing a product, wherein the product comprises a metal ring, a transparent supporting film is fixed to the metal ring, and a copper-clad ceramic substrate is mounted on the transparent supporting film; The outer edge of the bottom plate is connected to an infrared light emitting mechanism via an external bracket; A cylinder is installed in the center of the bottom plate, the telescopic rod of the cylinder is connected to a marking pen, the telescopic direction of the cylinder is vertical, and the light emitting direction of the infrared light emitting mechanism is toward the tip of the marking pen; The infrared light emitting mechanism and the marking pen are arranged one above the other, and the product is located between the infrared light emitting mechanism and the marking pen.

2. The jig for marking defective DCB substrates according to claim 1, characterized in that: It also includes a start button for starting a single extension and retraction of the cylinder. Once the start button is touched, the start button controls the piston rod of the cylinder to extend and then reset.

3. The jig for marking defective DCB substrates according to claim 1 is characterized by: The telescopic rod of the cylinder is threadedly connected to two locking nuts arranged up and down, a support frame is clamped between the two locking nuts arranged up and down, and the marking pen is detachably connected to the support frame; The support frame includes an upper support plate and a lower support plate arranged vertically, the upper support plate and the lower support plate are connected to a vertically arranged vertical plate on the same side, the top of the vertical plate is connected to a horizontal plate, the horizontal plate is provided with a through hole for passing the telescopic rod of the cylinder, and two locking nuts arranged vertically are clamped on the upper and lower sides of the horizontal plate; The upper support plate and the lower support plate are provided with mounting holes for inserting the marking pen longitudinally from top to bottom.

4. The jig for marking defective DCB substrates according to claim 1, characterized in that: The bottom plate is provided with a first guide rail for guiding the first sliding plate to slide and a cylinder slide table for driving the first sliding plate to move linearly, and two first guide rails are provided, and the two first guide rails are located at outer edges of opposite sides of the bottom plate; The first sliding plate is provided with a second guide rail for guiding the second sliding plate to slide and a cylinder slide for driving the second sliding plate to move linearly. Two second guide rails are provided and are located at outer edges of opposite sides of the first sliding plate.

5. The jig for marking defective DCB substrates according to claim 1 is characterized by: The hollow structures of the first sliding plate and the second sliding plate are both rounded rectangles, and the first sliding plate and the second sliding plate are both square frame structures.

6. The jig for marking defective DCB substrates according to claim 1, characterized in that: The external bracket is a U-shaped bracket.

7. The jig for marking defective DCB substrates according to claim 1, characterized in that: A camera device is installed on the external bracket, and the camera device captures the image information of the product. The camera device transmits the image information to the control host, and the control host obtains the positioning point information of the metal ring, the contour position information of the outer contour of the copper-clad ceramic substrate, and the defective product position information according to the product image information; The positioning point information of the metal ring is the coordinate values ​​of two specific positions on the metal ring, which are recorded as (X0, Y0) and (a, b), with (X0, Y0) as the coordinate origin, and (a, b) being constant in size and determined according to the two specific positions on the metal ring; The contour position information is the coordinate values ​​of the two endpoints of the diagonal line of the copper-clad ceramic substrate, the coordinate values ​​of the two endpoints are recorded as (X1, Y1) and (X2, Y2), and the coordinate values ​​of the two endpoints are obtained according to the positions of the two endpoints in the picture information; The control host has stored the layout design drawing of the copper-clad ceramic substrate in advance, and performs one-to-one positioning according to the position information of the two endpoints and the outer contour of the layout design drawing; Once defective products are analyzed and known from the image information collected by the camera device, the position of the defective products in the layout design drawing can be located, and the position information of the defective products is recorded as (row number a, column number b), the row number and column number of the defective products on the copper-clad ceramic substrate are recorded, and the position of the defective products is marked in the corresponding layout design drawing; The control host stores the location information of defective products.

8. The jig for marking defective DCB substrates according to claim 7, characterized in that: Once a defective product that needs to be marked is determined, the first sliding plate and the second sliding plate are controlled to move, so that the infrared light emitting mechanism faces the defective product, and the camera device transmits the image of the infrared light emitting mechanism irradiating the copper-clad ceramic substrate to the control host; The control host analyzes whether the infrared mark position on the screen matches the location information of the defective product; If they match, the control host drives the cylinder to extend and mark the corresponding position of the copper-clad ceramic substrate; If they do not match, the control host will send an error signal to avoid mislabeling.

9. The jig for marking defective DCB substrates according to claim 8, characterized in that: The position of the defective product is marked in the image information collected by the camera device, and this position is used as the position of the defective product that needs to be marked.

10. The marking method of a jig for marking defective DCB substrates according to claim 1, characterized in that: When the back of the product is facing upwards for defective product inspection, the positions of the first sliding plate and the second sliding plate are controlled, and the infrared light emitting mechanism is aligned with the position of the defective product; The marking pen is driven by the extension and retraction of the cylinder to lift up and mark defective products on the front of the product.

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