CN109600933B - Method for coating three-dimensional solder paste on inner conductor of coaxial electric connector and printed board pad - Google Patents
Method for coating three-dimensional solder paste on inner conductor of coaxial electric connector and printed board pad Download PDFInfo
- Publication number
- CN109600933B CN109600933B CN201811448979.3A CN201811448979A CN109600933B CN 109600933 B CN109600933 B CN 109600933B CN 201811448979 A CN201811448979 A CN 201811448979A CN 109600933 B CN109600933 B CN 109600933B
- Authority
- CN
- China
- Prior art keywords
- inner conductor
- point
- section
- axis
- weldable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004020 conductor Substances 0.000 title abstract 9
- 239000011248 coating agent Substances 0.000 title abstract 4
- 238000000576 coating method Methods 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 2
- 229910000679 solder Inorganic materials 0.000 title abstract 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract 3
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The invention discloses a method for coating three-dimensional solder paste of an inner conductor and a printed board pad of a coaxial electric connector, which comprises the following steps: s1, fixing the structure of the inner conductor of the coaxial electric connector and the printed board body, enabling the axis of the inner conductor to be parallel to the central line of a pad of the printed board, enabling the plane formed by the axis of the inner conductor and the central line of the pad of the printed board to be vertical to the plane where the pad of the printed board is located, and enabling the projection of the tail section or the middle section of the inner conductor on the plane where the pad of the printed board is located to be superposed with the pad; s2, defining the axis of the inner conductor as the X direction, defining the plane where the printed board pad is located as an XOY plane, defining the plane formed by the axis of the inner conductor and the center line of the printed board pad as an XOZ plane, and constructing a rectangular coordinate system; s3, controlling the vertex of the needle head of the tin paste syringe to continuously and uniformly coat the tin paste along a preset space pattern track according to the difference of the diameter and the weldable length of the inner conductor; and S4, controlling the vertex of the needle of the tin paste syringe to scrape at the coating end point after the coating is finished. The invention is high-efficient and reliable.
Description
Technical Field
The invention relates to a method for coating three-dimensional tin paste on an inner conductor of a coaxial electric connector and a pad of a printed circuit board, in particular to a method for coating tin paste on the inner conductor of the coaxial electric connector of an electronic product and the pad of the printed circuit board for three-dimensional welding, belonging to the technical field of welding of the electronic product.
Background
The three-dimensional interconnection welding of the inner conductor of the coaxial electric connector and the printed board in the field of electronic products is used for realizing the input/output of electric signals. The welding procedure has the following characteristics: the connector has the advantages of step height difference between an inner conductor and a printed board, large shape difference between the inner conductor and the printed board, more welding channels, small welding size and high requirement on welding consistency. At present, the solder paste coating of the bonding pad is widely performed by an automatic coating method, but the solder paste coating of the coaxial electric connector has the following problems: the three-dimensional bonding pad has smaller area, smaller quality of the coated solder paste and low adhesion rate of the solder paste and the bonding pad, so that the quantity of single-point tin at the coating position is small or the quantity of isolated point tin is large; the coating position of the solder paste of a single welding spot is reasonable, so that the inner conductor of the connector is not fully welded or is not completely coated, the consistency of the solder paste is poor, and welding break points or redundant solder points are generated. The interconnection welding defects of the three-dimensional welding pads seriously affect the multichannel electrical performance and consistency of electronic products, and meanwhile, the interconnection welding defects bring hidden troubles to the long-term reliability of the interconnection welding positions of the products.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method solves the problems of insufficient control of the solder paste coating amount, point position control and consistency control at the position of the three-dimensional solder pad of the conventional coaxial electric connector, provides a method for coating the three-dimensional solder paste on the inner conductor of the coaxial electric connector and the solder pad of the printed board, and solves the problems of the solder paste coating and interconnection welding of the three-dimensional solder pad.
The technical solution of the invention is as follows: the method for coating the three-dimensional solder paste on the inner conductor and the printed board pad of the coaxial electric connector comprises the following steps:
s1, fixing the structure of the inner conductor of the coaxial electric connector and the printed board body, enabling the axis of the inner conductor to be parallel to the central line of the pad of the printed board, enabling the plane formed by the axis of the inner conductor and the central line of the pad of the printed board to be vertical to the plane where the pad of the printed board is located, enabling the projection of the tail section or the middle section of the inner conductor on the plane where the pad of the printed board is located to be superposed with the pad, and enabling the corresponding tail section or the middle section to be a weldable section with the length being the weldable length;
s2, defining the axis of the inner conductor as the X direction, the plane where the printed board pad is located as an XOY plane, the plane formed by the axis of the inner conductor and the center line of the printed board pad as an XOZ plane, constructing a rectangular coordinate system, defining the positive direction of the Z axis and the positive direction of the X axis, and enabling the inner conductor to be located in a space formed by the positive direction of the Z axis and the positive direction of the X axis;
s3, controlling the vertex of the needle head of the tin paste syringe to continuously and uniformly coat the tin paste along a preset space figure track in a rectangular coordinate system according to the difference of the diameter and the welding length of the inner conductor;
and S4, after the coating is finished, controlling the vertex of the needle head of the tin paste syringe to scrape at the coating finishing point, and removing the residual tin paste at the vertex of the needle head of the tin paste syringe.
When the inner conductor weldable section is the inner conductor tail section, the diameter of the inner conductor weldable section is 0.2-0.3 mm, and the weldable length is less than or equal to 1.3mm, the preset space figure track is a single point, the X-axis coordinate and the Y-axis coordinate of the single point are respectively equal to the X-axis coordinate and the Y-axis coordinate of the tail end surface center point of the weldable section, and the Z-axis coordinate deviates from the tail end surface center point of the inner conductor weldable section by 0.1-0.15 mm along the Z-axis positive direction.
When the inner conductor weldable section is an inner conductor tail section, the diameter of the inner conductor weldable section is 0.3-0.4 mm, and the weldable length is less than or equal to 1.5mm, the X-axis coordinate and the Y-axis coordinate are respectively equal to the X-axis coordinate and the Y-axis coordinate of the midpoint of the inner conductor weldable section, the point of the Z-axis coordinate deviating from the midpoint of the inner conductor weldable section by 0.1-0.15 mm along the positive direction of the Z-axis is taken as a starting point, the point of the Z-axis coordinate deviating from the central point of the tail end of the inner conductor weldable section by 0.1-0.15 mm along the positive direction of the Z-axis is taken as an intermediate point, the Y-axis coordinate is equal to the coordinate of the central point of the tail end of the weldable section, the X-axis coordinate deviates from the central point of the tail end of the weldable section by 0.1-0.15 mm along the positive direction of the Z-axis is taken as an end point, and the preset broken line connecting the.
When the inner conductor weldable section is an inner conductor tail section, the diameter of the weldable section is 0.3-0.4 mm, and the weldable length is less than or equal to 1.5mm, the Y-axis coordinate is equal to the Y-axis coordinate of the tail end central point of the weldable section, the X-axis coordinate deviates from the tail end central point of the weldable section by 0.1-0.15 mm along the positive direction of the X-axis, the point of the Z-axis coordinate deviating from the XOY plane by 0.1-0.15 mm is taken as the starting point, the point of the Z-axis coordinate deviating from the tail end surface central point of the inner conductor weldable section by 0.1-0.15 mm along the positive direction of the Z-axis is taken as the middle point, the point of the Z-axis coordinate deviating from the middle point of the weldable section of the inner conductor by 0.1-0.15 mm along the positive direction of the Z.
When the inner conductor weldable section is the inner conductor tail section, the diameter of the weldable section is 0.4-0.5 mm, when the weldable length is less than or equal to 1.5mm, two points of which the X coordinate is equal to the X coordinate of the middle point of the weldable section of the inner conductor and the Y coordinate is 0.1-0.15 mm away from the middle point of the weldable section of the inner conductor and the Z coordinate is 0.1-0.15 mm away from the XOY plane along the positive direction of the Z axis are respectively taken as a starting point and an ending point, taking two points of which the X coordinate is equal to the X coordinate of the central point of the tail end surface of the inner conductor weldable segment, the Y coordinate deviates from the central point of the inner conductor weldable segment by 0.1-0.15 mm, and the Z coordinate deviates from the XOY plane by 0.1-0.15 mm along the positive direction of the Z axis as a first intermediate point and a second intermediate point respectively, the preset space graph track is a U-shaped space curve formed by a straight line segment between the starting point and the first middle point, an arc line segment between the first middle point and the second middle point and a straight line segment between the second middle point and the ending point.
When the inner conductor weldable section is the middle section of the inner conductor, the diameter of the weldable section is 0.4-0.5 mm, and the weldable length is less than or equal to 1.3mm, two points, the X coordinate of which is equal to the X coordinate of the middle point of the inner conductor weldable section and the Y coordinate of which deviates from the middle point of the inner conductor weldable section by 0.1-0.15 mm, the Z coordinate of which deviates from the XOY plane by 0.1-0.15 mm along the positive direction of the Z axis, are taken as a starting point and an end point, the X coordinate of which is equal to the X coordinate of the middle point of the inner conductor weldable section and the Y coordinate of which deviates from the Y coordinate of the middle point of the inner conductor weldable section are taken as intermediate points, and the preset space graph track is a C-shaped space curve formed by arc line segments among the starting point, the intermediate point and the end point.
And S4, scraping the top point of the needle head of the tin paste syringe at the coating end point by controlling the top point of the needle head of the tin paste syringe to move back and forth in the X direction, the Y direction and the Z direction by taking the coating end point as the center, wherein the unilateral movement distance is 0.05-0.1 mm.
And S4, scraping the top point of the needle head of the tin paste syringe at the coating end point by controlling the top point of the needle head of the tin paste syringe to move back and forth in the Y direction and the Z direction by taking the coating end point as the center, wherein the unilateral movement distance is 0.05-0.1 mm.
The step S4 is to control the vertex of the solder paste syringe needle to move back and forth in the X direction and the Z direction around the coating end point.
The unilateral movement distance of the top point of the needle head of the solder paste needle cylinder is 0.05-0.1 mm.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention adopts a method of controlling the vertex of the needle head of the tin paste syringe to continuously and uniformly coat the tin paste along the preset space pattern track and further scraping the coating end point, thereby improving the coating uniformity and consistency of the three-dimensional tin paste of the inner conductor of the coaxial electric connector and the bonding pad of the printed board;
(2) according to the invention, a multi-pattern space track tin paste coating mode is adopted according to the difference of the diameter and the weldable length of the inner conductor, so that the continuity, the uniformity and the consistency of multiple points of tin paste coating are ensured.
(3) The method for scraping the single-point graph track and the coating end point step by step can effectively improve the continuity, uniformity and consistency of tin paste coating of the coaxial electric connector with the diameter of the weldable section of 0.2-0.3 mm and the weldable length of less than or equal to 1.3 mm;
(4) the method for scraping the line-shaped track and the coating end point step by step can effectively improve the continuity, uniformity and consistency of tin paste coating of the coaxial electric connector with the diameter of the weldable section of 0.3-0.4 mm and the weldable length of less than or equal to 1.5 mm;
(5) the method for scraping the U-shaped space curve graph-shaped locus and the coating end point step by step can effectively improve the continuity, uniformity and consistency of tin paste coating of the coaxial electric connector with the weldable section diameter of 0.4-0.5 mm and the weldable length of less than or equal to 1.5 mm;
(6) the method for scraping the C-shaped space curve graph-shaped locus and the coating end point step by step can effectively improve the continuity, uniformity and consistency of tin paste coating of the coaxial electric connector with the weldable section diameter of 0.4-0.5 mm and the weldable length of less than or equal to 1.3 mm;
(7) the step-by-step scraping at the tin paste coating end point can effectively ensure the tin paste coating adhesion rate between the inner conductor and the printed board bonding pad, and improve the consistency of three-dimensional interconnection welding;
(8) aiming at coaxial electric connectors with various models and various inner conductor sizes, the invention only needs to adjust the coating amount of the solder paste and the shaft stepping distance, and has the universality of automatic production;
(9) the invention can aim at the batch production of multi-channel products and is suitable for the online production of various products, multiforms and large batch.
Drawings
Fig. 1 is a schematic diagram of a three-dimensional interconnection soldering structure of an inner conductor and a printed board pad of a coaxial electrical connector according to an embodiment of the invention. In the figure: 1. a structure fixing table; 2. product structure; 3. a tin paste syringe.
Fig. 2 is a schematic structural diagram of a three-dimensional interconnection welding position according to an embodiment of the invention. In the figure: 4. a coaxial electrical connector inner conductor; 5. and (5) printing a board welding pad.
Detailed Description
The invention is described in detail below with reference to the figures and the specific embodiments.
The invention provides a method for coating three-dimensional solder paste of an inner conductor and a printed board pad of a coaxial electric connector, which comprises the following steps:
s1, fixing the structure of the inner conductor 4 of the coaxial electric connector and the printed board body, enabling the axis of the inner conductor to be parallel to the central line of the pad 5 of the printed board, enabling the plane formed by the axis of the inner conductor and the central line of the pad of the printed board to be vertical to the plane where the pad 5 of the printed board is located, enabling the projection of the tail section or the middle section of the inner conductor on the plane where the pad of the printed board is located to be superposed with the pad, enabling the corresponding tail section or the middle section to be a weldable section, and enabling the length of the tail section; as shown in fig. 1 and 2, the printed board body structure is installed in a product structure 2 and fixed by a structure fixing table 1.
S2, defining the axis of the inner conductor as the X direction, the plane where the printed board pad is located as an XOY plane, the plane formed by the axis of the inner conductor and the center line of the printed board pad as an XOZ plane, constructing a rectangular coordinate system, defining the positive direction of the Z axis and the positive direction of the X axis, and enabling the inner conductor to be located in a space formed by the positive direction of the Z axis and the positive direction of the X axis;
s3, controlling the vertex of the needle head of the tin paste syringe to continuously and uniformly coat the tin paste along a preset space figure track in a rectangular coordinate system according to the difference of the diameter and the welding length of the inner conductor;
and S4, after the coating is finished, controlling the top point of the needle head of the tin paste syringe 3 to scrape at the coating end point, and removing the residual tin paste at the top point of the needle head of the tin paste syringe.
The method for continuously and uniformly coating the solder paste along the preset space pattern track comprises the following coating methods:
(1) and (4) single-point tin paste coating, and setting X, Y, Z shaft stepping distance at a coating end point to complete scraping.
(2) And (3) coating the 'L' type solder paste, and setting a Y/Z axis stepping distance at a coating end point to finish scraping.
(3) And (4) coating reversed 'L' -shaped tin paste, and setting a Y/Z axis stepping distance at a coating end point to finish scraping.
(4) And (4) coating the U-shaped solder paste, and setting the step distance of an X/Z axis at the coating end point to finish scraping.
(5) And C-shaped solder paste is coated, and the coating end point sets the stepping distance of the X/Z axis to complete scraping.
The solder paste coating track is set in the step (1), the inner conductor weldable section is an inner conductor tail section, the diameter of the inner conductor weldable section is 0.2-0.3 mm, the weldable length is less than or equal to 1.3mm, the preset space figure track is a single point, the X-axis coordinate and the Y-axis coordinate of the single point are respectively equal to the X-axis coordinate and the Y-axis coordinate of the tail end face center point of the weldable section, and the Z-axis coordinate deviates from the tail end face center point of the inner conductor weldable section by 0.1-0.15 mm along the Z-axis positive direction. After the solder paste is coated, the top point of the needle head of the solder paste needle cylinder is controlled to move back and forth along the X direction, the Y direction and the Z direction by taking a coating end point as a center, and the unilateral movement distance is 0.05-0.1 mm.
The step (2) sets a solder paste coating track, the inner conductor weldable section is an inner conductor tail section, the diameter of the inner conductor weldable section is 0.3-0.4 mm, when the weldable length is less than or equal to 1.5mm, an X-axis coordinate and a Y-axis coordinate are respectively equal to an X-axis coordinate and a Y-axis coordinate of the middle point of the weldable section of the inner conductor, a point of the Z-axis coordinate deviating from the middle point of the weldable section of the inner conductor by 0.1-0.15 mm along the positive direction of the Z-axis is taken as an initial point, a point of the Z-axis coordinate deviating from the center point of the tail end of the weldable section of the inner conductor by 0.1-0.15 mm along the positive direction of the Z-axis is taken as an intermediate point, a Y-axis coordinate is equal to a Y-axis coordinate of the center point of the tail end of the weldable section, and taking a point of which the Z-axis coordinate deviates from the XOY plane by 0.1-0.15 mm along the positive direction of the Z axis as a space graph track of an end point, wherein the starting point, the middle point and the end point form a broken line connected with the three points. After the solder paste is coated, the top point of the needle head of the solder paste needle cylinder is controlled to move back and forth along the Y direction and the Z direction by taking a coating end point as a center, and the unilateral movement distance is 0.05-0.1 mm.
And (3) setting a solder paste coating track, wherein the inner conductor weldable section is an inner conductor tail section, the diameter of the inner conductor weldable section is 0.3-0.4 mm, when the weldable length is less than or equal to 1.5mm, the Y-axis coordinate is equal to the Y-axis coordinate of the tail end central point of the weldable section, the X-axis coordinate deviates from the tail end central point of the weldable section by 0.1-0.15 mm along the positive direction of the X-axis, the point of the Z-axis coordinate deviating from the XOY plane by 0.1-0.15 mm is taken as the starting point, the point of the Z-axis coordinate deviating from the tail end surface central point of the inner conductor weldable section by 0.1-0.15 mm along the positive direction of the Z-axis is taken as the middle point, the point of the Z-axis coordinate deviating from the middle point of the inner conductor weldable section by 0.1-0.15 mm along the positive direction of the Z-axis. After the solder paste is coated, the top point of the needle head of the solder paste needle cylinder is controlled to move back and forth along the Y direction and the Z direction by taking a coating end point as a center, and the unilateral movement distance is 0.05-0.1 mm.
The step (4) sets a solder paste coating track, which is suitable for the inner conductor weldable section as the inner conductor tail section, the diameter of the weldable section is 0.4-0.5 mm, and when the weldable length is less than or equal to 1.5mm, two points of which the X coordinate is equal to the X coordinate of the middle point of the inner conductor welding section, the Y coordinate deviates 0.1-0.15 mm from the middle point of the inner conductor welding section, and the Z coordinate deviates 0.1-0.15 mm from the XOY plane along the positive direction of the Z axis are taken as a starting point and an ending point, the X coordinate is equal to the X coordinate of the central point of the tail end surface of the inner conductor weldable segment, the Y coordinate deviates from the central point of the inner conductor weldable segment by 0.1-0.15 mm, two points of which the Z coordinate deviates 0.1-0.15 mm from an XOY plane along the positive direction of a Z axis are taken as space graphic tracks of a first middle point and a second middle point, and a straight line section between an initial point and the first middle point, an arc line section between the first middle point and the second middle point and a straight line section between the second middle point and an end point form a U-shaped space curve. After the solder paste is coated, the top point of the needle head of the solder paste needle cylinder is controlled to move back and forth along the X direction and the Z direction by taking a coating end point as a center, and the unilateral movement distance is 0.05-0.1 mm.
And (5) setting a solder paste coating track, wherein the solder paste coating track is suitable for an inner conductor weldable section and is an inner conductor middle section, the diameter of the weldable section is 0.4-0.5 mm, when the weldable length is less than or equal to 1.3mm, taking two points of which the X coordinate is equal to the X coordinate of the middle point of the inner conductor weldable section and the Y coordinate deviates from the middle point of the inner conductor weldable section by 0.1-0.15 mm, and taking two points of which the Z coordinate deviates from an XOY plane by 0.1-0.15 mm along the positive direction of a Z axis as a starting point and an ending point, taking a point of which the X coordinate is equal to the X coordinate of the middle point of the inner conductor weldable section and the Y coordinate deviates from the middle point of the inner conductor weldable section as a space graph track of the middle point, and taking an arc line segment between the starting point, the middle point and the ending point as a C-shaped space. After the solder paste is coated, the top point of the needle head of the solder paste needle cylinder is controlled to move back and forth along the X direction and the Z direction by taking a coating end point as a center, and the unilateral movement distance is 0.05-0.1 mm.
According to the method, the problem of tin paste coating of the three-dimensional bonding pad is solved by controlling the mode that the vertex of the needle head of the tin paste syringe is continuously and uniformly coated with the tin paste along the preset space figure track and the coating point is scraped step by step according to the difference between the diameter of the inner conductor and the welding length.
Example 1
In a connector of a certain model, the length of an inner conductor is 1.0mm, the diameter of the inner conductor is 0.3mm, and the width of a pad of a printed board is 0.76 mm. And the X-axis coordinate and the Y-axis coordinate of the single point are respectively equal to the X-axis coordinate and the Y-axis coordinate of the central point of the end surface of the weldable segment tail, and the Z-axis coordinate deviates from the central point of the end surface of the weldable segment tail of the inner conductor by 0.15mm along the positive direction of the Z axis. After the tin paste is coated, the vertex of the needle head of the tin paste syringe is controlled to move 0.1mm in the X-axis negative direction and 0.1mm in the X-axis positive direction by taking the coating end point as the center, and moves 0.1mm in the Y-axis negative direction and 0.1mm in the Y-axis positive direction, and the three-dimensional pad tin paste is coated after moving 0.1mm in the Z-axis negative direction and 0.1mm in the Z-axis positive direction.
Example 2
In a connector of a certain model, the length of an inner conductor is 1.5mm, the diameter of the inner conductor is 0.48mm, and the width of a pad of a printed board is 0.8 mm. Coordinates of the starting point: the X coordinate is equal to the X coordinate of the middle point of the inner conductor weldable segment, the Y coordinate deviates 0.15mm from the middle point of the inner conductor weldable segment along the positive direction of the Y axis, and the Z coordinate deviates 0.15mm from the XOY plane along the positive direction of the Z axis. First intermediate point coordinates: the X coordinate is equal to the X coordinate of the central point of the tail end surface of the inner conductor weldable segment, the Y coordinate deviates from the central point of the inner conductor weldable segment by 0.15mm along the positive direction of the Y axis, and the Z coordinate deviates from the XOY plane by 0.15mm along the positive direction of the Z axis. Second intermediate point coordinates: the X coordinate is equal to the X coordinate of the central point of the tail end surface of the inner conductor weldable segment, the Y coordinate deviates from the central point of the inner conductor weldable segment by 0.15mm along the negative direction of the Y axis, and the Z coordinate deviates from the XOY plane by 0.15mm along the positive direction of the Z axis. End point coordinates: the X coordinate is equal to the X coordinate of the middle point of the inner conductor weldable segment, the Y coordinate deviates 0.15mm from the middle point of the inner conductor weldable segment along the negative direction of the Y axis, and the Z coordinate deviates 0.15mm from the XOY plane along the positive direction of the Z axis. After the tin cream is coated, the vertex of the needle head of the tin cream syringe is controlled to move 0.1mm along the X-axis negative direction and 0.1mm along the X-axis positive direction by taking the coating end point as the center, and the vertex of the needle head of the tin cream syringe moves 0.1mm along the Z-axis negative direction and 0.1mm along the Z-axis positive direction, so that the coating of the tin cream on the three-dimensional bonding pad is finished.
Parts of the specification which are not described in detail are within the common general knowledge of a person skilled in the art.
Claims (4)
1. The method for coating the three-dimensional solder paste on the inner conductor and the printed board pad of the coaxial electric connector is characterized by comprising the following steps of:
s1, fixing the structure of the inner conductor of the coaxial electric connector and the printed board body, enabling the axis of the inner conductor to be parallel to the central line of the pad of the printed board, enabling the plane formed by the axis of the inner conductor and the central line of the pad of the printed board to be vertical to the plane where the pad of the printed board is located, enabling the projection of the tail section or the middle section of the inner conductor on the plane where the pad of the printed board to be superposed with the pad of the printed board, enabling the corresponding tail section or the middle section to be a weldable section and enabling the length of the tail section or;
s2, defining the axis of the inner conductor as the X-axis direction, the plane where the printed board pad is located as an XOY plane, the plane formed by the axis of the inner conductor and the center line of the printed board pad as an XOZ plane, constructing a rectangular coordinate system, defining the positive direction of the Z axis and the positive direction of the X axis, and enabling the inner conductor to be located in a space formed by the positive direction of the Z axis and the positive direction of the X axis;
s3, controlling the vertex of the needle head of the tin paste syringe to continuously and uniformly coat the tin paste along a preset space figure track in a rectangular coordinate system according to the difference of the diameter and the welding length of the inner conductor;
when the inner conductor weldable section is an inner conductor tail section, the diameter of the inner conductor weldable section is 0.2-0.3 mm, and the weldable length is less than or equal to 1.3mm, the preset space figure track is a single point, the X-axis coordinate and the Y-axis coordinate of the single point are respectively equal to the X-axis coordinate and the Y-axis coordinate of the tail end surface center point of the weldable section, and the Z-axis coordinate deviates from the tail end surface center point of the inner conductor weldable section by 0.1-0.15 mm along the Z-axis positive direction;
or, when the inner conductor weldable section is the inner conductor tail section, the diameter of the inner conductor weldable section is 0.3-0.4 mm, when the weldable length is less than or equal to 1.5mm, taking the X-axis coordinate and the Y-axis coordinate as the X-axis coordinate and the Y-axis coordinate of the section center point of the weldable section of the inner conductor, respectively, taking the point of the Z-axis coordinate which deviates from the section center point of the weldable section of the inner conductor by 0.1-0.15 mm along the positive direction of the Z-axis as the starting point, taking the point of the Z-axis coordinate which deviates from the section center point of the tail end surface of the section of the inner conductor by 0.1-0.15 mm along the positive direction of the Z-axis as the middle point, taking the Y-axis coordinate which equals to the section center point of the tail end surface of the weldable section, taking the point of the X-axis coordinate which deviates from the section center point of the tail end surface of the weldable section by, the preset space graph track is a broken line formed by connecting three points, namely a starting point, a middle point and an end point;
or when the inner conductor weldable section is an inner conductor tail section, the diameter of the weldable section is 0.3-0.4 mm, and the weldable length is less than or equal to 1.5mm, the Y-axis coordinate is equal to the Y-axis coordinate of the central point of the tail end surface of the weldable section, the X-axis coordinate deviates from the central point of the tail end surface of the weldable section by 0.1-0.15 mm along the positive direction of the X-axis, the point of the Z-axis coordinate deviating from the XOY plane by 0.1-0.15 mm is taken as a starting point, the point of the Z-axis coordinate deviating from the central point of the tail end surface of the inner conductor weldable section by 0.1-0.15 mm along the positive direction of the Z-axis is taken as an intermediate point, the point of the Z-axis coordinate deviating from the central point of the fracture surface of the inner conductor weldable section by 0.1-0.15 mm;
or when the inner conductor weldable section is an inner conductor tail section, the diameter of the weldable section is 0.4-0.5 mm, and the weldable length is less than or equal to 1.5mm, two points, the X-axis coordinate of which is equal to the X-axis coordinate of the central point of the fracture surface of the inner conductor weldable section, the Z-axis coordinate of which is deviated from an XOY plane by 0.1-0.15 mm along the positive direction of the Z-axis, the Y-axis coordinate of which is deviated from the central point of the fracture surface of the inner conductor by 0.1-0.15 mm along the positive direction of the Y-axis and the negative direction, are respectively taken as a starting point and an ending point, two points, the X-axis coordinate of which is equal to the X-axis coordinate of the central point of the tail end surface of the inner conductor weldable section, the Z-axis coordinate of which is deviated from the XOY plane by 0.1-0.15 mm along the positive direction of the Y-axis and the negative direction are respectively taken as a first intermediate point and a second intermediate point, and the preset space graph, An arc line section between the first middle point and the second middle point, and a straight line section between the second middle point and the end point form a U-shaped space curve;
s4, after the coating is finished, controlling the vertex of the needle head of the tin paste syringe to scrape at the coating finishing point, and removing the residual tin paste at the vertex of the needle head of the tin paste syringe; the specific scraping steps are as follows:
when the inner conductor weldable section is the inner conductor tail section, the diameter of the inner conductor weldable section is 0.2-0.3 mm, and the weldable length is less than or equal to 1.3mm, the top point of the needle head of the tin paste needle cylinder is controlled to move back and forth along the X-axis direction, the Y-axis direction and the Z-axis direction by taking the coating end point as the center, and the unilateral movement distance is 0.05-0.1 mm.
2. The method for coating the three-dimensional solder paste on the inner conductor and the printed board pad of the coaxial electric connector according to claim 1, wherein when the inner conductor weldable section is the tail section of the inner conductor, the diameter of the inner conductor weldable section is 0.3-0.4 mm, and the weldable length is less than or equal to 1.5mm, the step S4 of scraping the top point of the needle head of the solder paste syringe at the coating end point comprises the following specific steps:
and controlling the top point of the needle head of the solder paste needle cylinder to move back and forth along the Y-axis direction and the Z-axis direction by taking the coating end point as the center, wherein the unilateral movement distance is 0.05-0.1 mm.
3. The method for coating the three-dimensional solder paste on the inner conductor and the printed board pad of the coaxial electrical connector according to claim 1, wherein when the weldable section of the inner conductor is the tail section of the inner conductor, the diameter of the weldable section is 0.4-0.5 mm, and the weldable length is less than or equal to 1.5mm, the step S4 of scraping the top point of the needle head of the solder paste syringe at the coating end point comprises the specific step of controlling the top point of the needle head of the solder paste syringe to move back and forth along the X-axis direction and the Z-axis direction with the coating end point as the center.
4. The method for coating the inner conductor and the printed board pad of the coaxial electric connector with the three-dimensional solder paste according to claim 3, wherein the unilateral movement distance of the vertex of the needle head of the solder paste syringe is 0.05-0.1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811448979.3A CN109600933B (en) | 2018-11-28 | 2018-11-28 | Method for coating three-dimensional solder paste on inner conductor of coaxial electric connector and printed board pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811448979.3A CN109600933B (en) | 2018-11-28 | 2018-11-28 | Method for coating three-dimensional solder paste on inner conductor of coaxial electric connector and printed board pad |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109600933A CN109600933A (en) | 2019-04-09 |
| CN109600933B true CN109600933B (en) | 2020-09-18 |
Family
ID=65960009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811448979.3A Active CN109600933B (en) | 2018-11-28 | 2018-11-28 | Method for coating three-dimensional solder paste on inner conductor of coaxial electric connector and printed board pad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109600933B (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW382180B (en) * | 1996-07-15 | 2000-02-11 | Sony Corp | Camera lens |
| US6369345B1 (en) * | 2000-08-18 | 2002-04-09 | Motorola, Inc. | Method and apparatus for reflowing solder paste using a light source |
| CN101112135B (en) * | 2004-11-29 | 2010-12-29 | Fci公司 | Improved Matched Impedance Surface Mount Technology Footprint |
| CN2805300Y (en) * | 2005-05-18 | 2006-08-09 | 威盛电子股份有限公司 | Connector Assembly Structure |
| JP5004654B2 (en) * | 2007-05-16 | 2012-08-22 | パナソニック株式会社 | Wiring board connection method and wiring board structure |
| EP2519086B1 (en) * | 2011-04-26 | 2016-03-23 | Tyco Electronics Belgium EC BVBA | High speed input/output connection interface element, cable assembly and interconnection system with reduced cross-talk |
| CN103316827B (en) * | 2013-06-09 | 2015-10-28 | 深圳众为兴技术股份有限公司 | A kind of dispensing method, device and spot gluing equipment |
| CN104190592B (en) * | 2014-05-19 | 2016-08-17 | 河南科技大学 | A kind of full-automatic painting solder(ing) paste machine and painting method thereof |
| JP6513465B2 (en) * | 2015-04-24 | 2019-05-15 | 日本航空電子工業株式会社 | Lead connection structure |
| CN107528138B (en) * | 2017-08-07 | 2019-08-30 | 番禺得意精密电子工业有限公司 | Electric coupler component |
-
2018
- 2018-11-28 CN CN201811448979.3A patent/CN109600933B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109600933A (en) | 2019-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109079325B (en) | Laser filler wire welding transition mode real-time monitoring device and method | |
| CN203863172U (en) | Automatic welding and manufacturing device for electronic component | |
| CN103155143A (en) | Waterfall wire bonding | |
| CN109600933B (en) | Method for coating three-dimensional solder paste on inner conductor of coaxial electric connector and printed board pad | |
| CN112822860B (en) | A groove solder paste spraying device for groove circuit board | |
| CN106076704B (en) | Intelligent soldering flux spraying device and method and sprayer with device | |
| CN103111707A (en) | Novel control system of selective crest welder | |
| CN104837300A (en) | Thick metal circuit board in NFC or wireless charging technology and manufacturing method thereof | |
| CN112518060B (en) | Special-shaped hole electric spark machining clamp and method | |
| CN103002668A (en) | Terminal surface mounting method based on circuit board | |
| CN207925442U (en) | It applies cream tooling and plants ball jig | |
| CN117177448A (en) | Be applied to printed circuit board's accurate solder paste spray printing equipment | |
| CN206356701U (en) | A kind of multiinjector fixture of selective wave-soldering | |
| CN205496736U (en) | A solder paste dispensing device for automatic soldering equipment | |
| CN103203970A (en) | A hybrid preparation process for a three-dimensional mask plate | |
| CN100409991C (en) | Welding wire and lead frame spot welding method | |
| CN202524647U (en) | Flexible circuit board golden finger electroplating structure | |
| CN215238399U (en) | Dragging and welding equipment acting on copper foil of SATA cable port | |
| CN205245103U (en) | PCB of LED lamp and interface module of aluminium base board | |
| CN221094287U (en) | An adjustable coaxial wire feeding auxiliary device for laser cladding head | |
| CN119237769A (en) | Laser wire powder synergy and arc composite additive manufacturing device and method | |
| CN205111036U (en) | Double -screw bolt lifting height sets for frock | |
| CN218826566U (en) | Three-leg magnetic core inductor | |
| CN216218581U (en) | Robot circuit board pastes dress device | |
| CN219805503U (en) | Double-pulse non-consumable electrode electric arc composite energy field material adding device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |