Chip component pin correction device
Technical Field
The invention relates to a pin correction device for a chip component.
Background
At present, most of the chip components are uneven in welded pins due to the external factors and the stress effect of the pins of the device in the purchase process, the chip components are small in size and cannot be checked by naked eyes, and a specific tool is needed to ensure the flatness of the pins, so that the reliability of the whole circuit board is improved.
Disclosure of Invention
In order to solve the problems, the invention provides a device for correcting pins of a chip component, which can correct the flatness of the pins of the chip component.
The invention relates to a correction device for pins of a patch element, which is characterized in that: the device comprises a lower die for placing a patch component, an upper die for correcting the flatness of pins of the patch component and a pneumatic device for adjusting the distance between the upper die and the lower die, wherein the lower die and the pneumatic device are fixedly arranged on a fixed platform, and the driving end of the pneumatic device is provided with the upper die for adjusting the distance between the upper die and the lower die;
the lower die comprises a pylon for controlling the distance between the upper die and the lower die, a cavity for placing a patch element and a guide assembly for guiding the upper die, the pylon is fixedly arranged on a horizontal fixed platform, a plurality of guide assemblies are axially arranged on the pylon along the pylon, and the cavity is fixedly arranged on the pylon; the cavity comprises a cavity for accommodating the chip component and steel needles for guiding, the cavity is formed by two symmetrically arranged fixing blocks, the two fixing blocks are embedded in a groove of a processing surface of a lower die in parallel, a row of steel needles are arranged on the surfaces of the two fixing blocks along the axial direction of the two fixing blocks respectively, the two rows of steel needles are arranged in parallel, the minimum gap between every two adjacent steel needles of a single row of steel needles is larger than the width of a single pin of the chip component, the gap between every two adjacent steel needles of the single row of steel needles is the center distance of the adjacent steel needles minus the diameter of the single steel needle, and the distance between the processing surface of the lower die and the processing surface of the upper die is larger than or equal to the height of the pin of the chip component;
the upper die is arranged on the piston of the pneumatic device, the processing surface of the upper die is always parallel to the processing surface of the lower die, and the orthographic projection of the lower die cavity on the processing surface of the lower die is ensured to always fall in the orthographic projection range of the upper die on the processing surface of the lower die; the upper die is provided with guide through holes which can be in one-to-one correspondence with the guide assemblies and allow the upper parts of the guide through holes to penetrate through; two rows of round holes for steel needles to pass through are formed in the position corresponding to the machining surface of the upper die, and the lower die steel needles can be just inserted into the round holes of the upper die;
the pneumatic device comprises a cylinder for providing driving force for the upper die, a cylinder fixing plate for installing the cylinder and an air valve switch for controlling the cylinder to work, wherein the cylinder fixing plate is installed on a support column on a fixing platform, the cylinder is fixedly installed on the lower surface of the cylinder fixing plate, an air inlet of the cylinder is communicated with an external air source pipeline, a piston of the cylinder is fixedly installed on the upper die as a driving end, and the piston of the cylinder does linear reciprocating motion along the central shaft direction of the upper die or the lower die; the air valve switch is communicated with the control cavity of the air cylinder through a control pipeline and is used for controlling the air cylinder to work; the central axis direction of the upper die or the lower die is defined as the direction perpendicular to the processing surface of the corresponding upper die or lower die.
The inner side walls of the fixing blocks are axially provided with L-shaped steps for placing the patch components, and the step surfaces of the L-shaped steps of the two fixing blocks are positioned on the same plane parallel to the machining surface of the lower die.
The guide assembly comprises a guide column and a pressure spring, the bottom of the guide column is fixedly arranged on a column table of the lower die, and the upper part of the guide column penetrates into a guide through hole corresponding to the upper die; the compression spring is coaxially sleeved on the outer wall of the guide post, one end of the compression spring is connected with the processing surface of the post, and the other end of the compression spring is connected with the processing surface of the upper die.
The column base is cuboid, and a set of guide components are respectively arranged on four corners of a processing surface of the column base.
The upper die is cuboid, and guide through holes corresponding to the guide assemblies are respectively formed in four corners of the upper die.
The bottom of support column with fixed platform rigid coupling, the upper portion of support column is the external screw thread, and the external screw thread section of support column is furnished with two fastening bolts that are used for pressing from both sides tight cylinder fixed plate, the cylinder fixed plate pass through two fastening bolts with the support column rigid coupling.
The fixed platform, the upper die and the lower die are all horizontally arranged.
The device connects the upper die and the lower die through a pneumatic device and a plurality of connecting pieces so as to ensure that the whole device operates normally. When the die is used, the component is placed into the cavity of the lower die by using tweezers, and the pins of the component just pass through the gap between the upper die and the lower die, and the gap between the upper die and the lower die is larger than or equal to the height of the pins of the component, so that the pins of the component are prevented from being extruded by external force to cause deflection. And then the piston of the air cylinder is controlled to move up and down through the air valve switch, so that the upper die is matched with the lower die along the guide rail column.
The round hole is arranged to avoid the steel needle used for positioning in the lower die, the minimum distance between two adjacent round holes is just larger than the width of the pin of the device, when in operation, the clearance between the upper die and the column of the lower die is matched with each other, namely the upper die moves downwards, the lower die steel needle is just inserted into the round hole corresponding to the upper die, and along with the downward movement of the upper die, the distance between the processing surface of the upper die and the processing surface of the lower die is reduced until the processing surface of the upper die is contacted with the chip component, and the pin of the device is flattened because the upper die is always in the horizontal direction, so that the pin of the device is in the same horizontal plane.
The beneficial effects of the invention are as follows: and the pins of the patch element are flattened, so that the problems of device cold joint and short circuit caused by uneven height and uneven left and right of the pins are avoided.
Drawings
Fig. 1 is a structural diagram of the present invention.
Fig. 2 is a partial enlarged view of fig. 1.
Fig. 3 is a schematic view of the upper die tooling surface of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings
Referring to the drawings:
the pin correction device for the chip component comprises a lower die 1 for placing the chip component, an upper die 2 for correcting the pin flatness of the chip component and a pneumatic device 3 for adjusting the distance between the upper die and the lower die, wherein the lower die 1 and the pneumatic device 3 are fixedly arranged on a fixed platform 4, and the upper die 2 is arranged at the driving end of the pneumatic device 3 and is used for adjusting the distance between the upper die 2 and the lower die 1;
the lower die 1 comprises a column 11 for controlling the distance between an upper die and a lower die, a cavity 12 for placing a patch element and a guide component 13 for guiding the upper die, wherein the column 11 is fixedly arranged on a horizontal fixed platform 4, a plurality of guide components 13 are axially arranged on the column 11 along the column, and the cavity 12 is fixedly arranged on the column 11; the cavity 12 comprises a cavity 121 for accommodating the chip component and steel pins 122 for guiding, the cavity 121 is formed by two symmetrically arranged fixed blocks, the two fixed blocks are embedded in a groove of a processing surface of the lower die 1 in parallel, a row of steel pins 122 are respectively arranged on the surfaces of the two fixed blocks along the axial direction of the two fixed blocks, the two rows of steel pins 122 are arranged in parallel, the minimum distance between every two adjacent steel pins 122 is larger than the width of a pin of the chip component, and the distance between the processing surface of the lower die 1 and the processing surface of the upper die 2 is larger than or equal to the height of the pin of the chip component;
the upper die 2 is arranged on the piston of the pneumatic device 3, the processing surface of the upper die 2 is always parallel to the processing surface of the lower die 1, and the orthographic projection of the cavity 12 of the lower die 1 on the processing surface of the lower die is ensured to always fall in the orthographic projection range of the upper die on the processing surface of the lower die; the upper die 2 is provided with guide through holes which can be in one-to-one correspondence with the guide assemblies 13 and are penetrated by the upper parts of the guide through holes; two rows of round holes 21 for the steel needles 122 to pass through are arranged at the positions corresponding to the processing surfaces of the upper die 2;
the pneumatic device 3 comprises a cylinder 31 for providing driving force for an upper die, a cylinder fixing plate 32 for installing the cylinder, and a gas valve switch 33 for controlling the operation of the cylinder, wherein the cylinder fixing plate 32 is installed on a supporting column 41 on a fixing platform 4 and is fixed by a fastening nut 42; the cylinder 31 is fixedly arranged on the lower surface of the cylinder fixing plate 32 through four screws 311, an air inlet 312 of the cylinder 31 is communicated with an external air source pipeline, a piston of the cylinder 31 is fixedly arranged on the upper die 2 as a driving end through a connecting bolt 313, and the piston of the cylinder 31 linearly reciprocates along the central axis direction of the upper die 2 or the lower die 1; the air valve switch 33 is communicated with the control cavity of the air cylinder 31 through a control pipeline and is used for controlling the air cylinder to work; the central axis direction of the upper die or the lower die is defined as the direction perpendicular to the processing surface of the corresponding upper die or lower die.
The inner side walls of the fixing blocks are axially provided with L-shaped steps for placing the patch components, and the step surfaces of the L-shaped steps of the two fixing blocks are positioned on the same plane parallel to the machining surface of the lower die.
The guide assembly 13 comprises a guide column 131 and a pressure spring 132, wherein the bottom of the guide column 131 is fixedly arranged on a column table 11 of the lower die 1, and the upper part of the guide column penetrates into a guide through hole corresponding to the upper die 2; the compression spring 132 is coaxially sleeved on the outer wall of the guide post 131, wherein one end of the compression spring 132 is connected with the processing surface of the post, and the other end of the compression spring 132 is connected with the processing surface of the upper die 2.
The column table 11 is a cuboid, and a set of guide components 13 are respectively arranged at four corners of the processing surface of the column table 11.
The upper die 2 is a cuboid, and guide through holes corresponding to the guide components are respectively formed in four corners of the upper die 2.
Two support columns 41 are vertically installed on the fixed platform 4, the bottoms of the support columns 41 are fixedly connected with the fixed platform 4, the upper parts of the support columns 41 are provided with external threads, the external thread sections of the support columns 41 are provided with two fastening bolts 42 used for clamping the air cylinder fixing plate 32, and the air cylinder fixing plate 32 is fixedly connected with the support columns 41 through the two fastening bolts 42.
The fixed platform 4, the upper die 2 and the lower die 1 are all horizontally arranged.
The device connects the upper die and the lower die through the pneumatic device 3 and a plurality of connecting pieces so as to ensure that the whole device works normally. When the die is used, the component is placed into the cavity of the lower die by using tweezers, and the pins of the component just pass through the gap between the upper die and the lower die, and the gap between the upper die and the lower die is larger than or equal to the height of the pins of the component, so that the pins of the component are prevented from being extruded by external force to cause deflection. And then the piston of the air cylinder is controlled to move up and down through the air valve switch, so that the upper die is matched with the lower die along the guide rail column.
The round hole is arranged to avoid the steel needle used for positioning in the lower die, the minimum distance between two adjacent round holes is just larger than the width of the pin of the device, when in operation, the clearance between the upper die and the column of the lower die is matched with each other, namely the upper die moves downwards, the lower die steel needle is just inserted into the round hole corresponding to the upper die, and along with the downward movement of the upper die, the distance between the processing surface of the upper die and the processing surface of the lower die is reduced until the processing surface of the upper die is contacted with the chip component, and the pin of the device is flattened because the upper die is always in the horizontal direction, so that the pin of the device is in the same horizontal plane.
The embodiments described in the present specification are merely examples of implementation forms of the inventive concept, and the scope of protection of the present invention should not be construed as being limited to the specific forms set forth in the embodiments, but also equivalent technical means that can be conceived by those skilled in the art according to the inventive concept.