CN112671361A - Network filter shell single structure and production process thereof - Google Patents
Network filter shell single structure and production process thereof Download PDFInfo
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- CN112671361A CN112671361A CN202110112093.7A CN202110112093A CN112671361A CN 112671361 A CN112671361 A CN 112671361A CN 202110112093 A CN202110112093 A CN 202110112093A CN 112671361 A CN112671361 A CN 112671361A
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Abstract
The invention discloses a network filter shell single structure and a production process thereof, relates to the technical field of network filter shell production, and aims to solve the problems that the quality of a soldering process of the conventional network filter shell cannot be effectively controlled, so that the product quality is unstable, and the repair rate is high. The device has a novel structure, can effectively improve the solderability requirement and the oxidation resistance of a product, is favorable for tin to climb along the wedge-shaped tin climbing inclined plane to wrap the wedge-shaped inclined plane of the outer PIN foot, improves the welding firmness, prevents the generation of insufficient solder, ensures good conductivity, improves the safety performance of the product, and is convenient to use.
Description
Technical Field
The invention relates to the technical field of production of network filter shells, in particular to a network filter shell single structure and a production process thereof.
Background
The electronic network filter shell is used for protecting and containing electronic and electrical components inside the inner cavity of the shell, the electrical components in the inner cavity are connected to a PCB (printed circuit board) through pin terminals outside two sides of the shell, and the existing network filter shell comprises a shell and pin terminals symmetrically arranged on two sides.
In the production process of the shell, the pin terminal is firstly plated with nickel and tin, then the outer connecting rod connected with the pin terminal is cut off, thereby becoming a single network filter shell, the cross section of the pin terminal can expose the original metal material after the outer connecting rod is cut off, the cross section of the pin terminal of the network filter is not provided with a nickel-tin layer, the pin terminal of the network filter needs to be subjected to a tin soldering process when a client uses the pin terminal for subsequent use, the product is transported to a client and put into the tin soldering process when the client is not in urgent need, the cross section of the pin terminal of the network filter is easy to generate an oxide layer, so that the cross section of the network filter pin terminal is easy to have cold solder joint and can not be soldered with new tin in the soldering process of the client, the quality of the soldering process of the network filter shell to the client can not be effectively controlled, the product quality is unstable, the repair rate is high, therefore, in order to solve such problems, we propose a network filter housing monolithic structure and a production process thereof.
Disclosure of Invention
The network filter shell single structure and the production process thereof provided by the invention solve the problems of unstable product quality and high repair rate caused by the fact that the soldering process quality of the network filter shell cannot be effectively controlled.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a network filter shell monomer structure, includes the shell body, the top of shell body is provided with the PIN terminal, outer PIN foot is installed to the bottom of shell body, PIN terminal and outer PIN foot all evenly set up along the length direction of shell body, PIN terminal and outer PIN foot all are the symmetry setting with the axis of shell body, the lateral wall of PIN terminal is provided with the hanging wire groove, the bottom of outer PIN foot is provided with the face of weld, the one end of outer PIN foot is provided with the cross section, the outer wall of outer PIN foot is provided with the wedge and climbs the tin inclined plane, the top of shell body is provided with the upper cover.
Preferably, retaining walls are arranged at two ends of the shell body, and grooves are formed in the top ends of the retaining walls.
Preferably, the top of shell body is provided with the magnetic core holding tank, the magnetic core holding tank is the symmetry setting with shell body's axis, shell body's bottom outer wall and the inner chamber of magnetic core holding tank are the matte structure.
Preferably, the top end of the shell body is provided with a guide hole, one end of the guide hole penetrates through the shell body and extends to the outside, and the side wall of the shell body is provided with a first foot position identification mark.
Preferably, the outer PIN foot and the PIN terminal are integrally formed by stamping a material plate, an outer connecting rod, an inner connecting rod, a pre-folding position, a trimming position and a positioning hole are arranged on the material plate, a limiting groove is formed between the PIN terminal and the outer PIN foot, a second cutting position is arranged between the outer connecting rod and the outer PIN foot, and a first cutting position is formed between the inner connecting rod and the PIN terminal.
Preferably, one end of the outer PIN foot is formed into a cross section and a wedge-shaped tin climbing inclined plane by stamping the first cutting position and the second cutting position.
A production process of a network filter shell monomer structure comprises the following steps: the method comprises the following steps:
s1: terminal pin punching press integrative bending shaping: putting a material plate into a continuous stamping die to perform a stamping and integral bending molding process, firstly trimming two sides of the material plate to ensure that the dimensional accuracy of the material width meets the requirement;
then, punching a positioning hole on one side of the material plate, and accurately positioning the stamping and blanking size of the material belt through the positioning hole;
then, punching a pre-folding position on the other side close to the material plate;
punching pin terminals at corresponding positions on the material plate along the pre-folding positions;
after passing through an air compression position, an outer PIN is punched at the other side of the material plate connected with the PIN terminal, and an outer connecting rod and an inner connecting rod are respectively formed at the outer ends of the PIN terminal and the outer PIN;
the pins are prevented from deforming in the processes of bending, electroplating and injection molding of the terminal pins by the connection limiting function of the internal connecting rod;
after a plurality of continuous air compression positions, cutting off the inner connecting rod;
bending the outer PIN and the PIN terminal for 90 degrees for molding at the next stamping position, wherein the control range of the bending angle is between 90 and 95 degrees;
forming a terminal finished product;
s2: injection molding: the method comprises the following steps that two groups of terminal finished products are relatively placed in an injection mold, and the bent parts of terminal PINs of the two groups of terminal finished products are subjected to injection molding and glue filling molding to be wrapped together to form a plurality of shell bodies connected in the middle, glue is contained in a limiting groove, and the limiting groove fixes the PIN terminals and the outer PIN PINs in the shell bodies to prevent the terminal PINs from vertically moving up and down after injection molding;
an outer terminal pin group and an inner terminal pin group are formed on the plastic shell body, the outer terminal pin group is connected with the outer connecting rod, and the inner terminal pin group is connected with the inner connecting rod;
s3: baking: baking the injection molded finished product to release internal stress in the finished product, wherein the baking temperature is 135-145 ℃ for 2-3 h;
s4: burr treatment: then, carrying out rough edge processing on the finished product after baking, wherein the rough edge processing step comprises the following steps: firstly, placing the baked semi-finished product into a track of a sand blasting machine, opening a conveying belt to adjust a sand blasting gun head, and aligning the rough edge part to be processed of the semi-finished product; opening an air pressure switch of the sand blasting gun head, and adjusting the air pressure to 35-50 KG; opening a sand sucker, opening a conveyer belt and each sand blasting air pressure, and performing sand blasting to remove burrs;
s5: cutting an outer side rod: cutting off the outer connecting rod through a second cutting position;
s6: electroplating: plating a metal protection layer on the surfaces of the formed PIN terminal and the outer PIN in an electroplating mode, and electroplating the surfaces of the outer terminal PIN group and the inner terminal PIN group to form the metal protection layers on the outer surfaces of the outer terminal PIN group and the inner terminal PIN group respectively, wherein the thickness of the plating layer is 0.5-1.5 mu m of a nickel layer, and the thickness of a tin layer is 4-12 mu m;
s7: removing the inner connecting rod: removing the inner connecting rod along the first cutting position, and separating the inner connecting rod from the inner terminal pin group on the plastic shell to obtain a plurality of network filter shells with metal terminal pins;
s8: and (5) preparing a finished product.
The invention has the beneficial effects that:
1. the PIN terminals in the shell of the network filter are manufactured by punching through a coil plate material, so that the two sides of each metal PIN are respectively provided with an outer connecting rod and an inner connecting rod edge connecting PIN terminal, the inner PIN terminal is provided with a pre-folding position, the inner connecting rods are connected with the PIN terminal groups on the two sides of each group of the shell to be electroplated after the outer connecting rods are cut off, the inner connecting rods are enabled to conduct electricity to transmit the current to the PIN terminals of each group, the PIN terminals on the two sides of the shell body and the transverse section surface of the outer PIN can be electroplated with nickel-tin layers, and the weldability requirement and the oxidation resistance of a product are improved.
2. Outer PIN foot front end on the network filter shell lateral wall is provided with the wedge and climbs the tin inclined plane, and this wedge climbs the more effectual improvement customer end welding PCB board of tin inclined plane design for outer PIN foot is connected more firmly with the PCB board, and easy soldering tin when making outer PIN foot and PCB board weld is favorable to tin to climb the wedge inclined plane of tin parcel outer PIN foot wedge inclined plane along the wedge, improves the welding firmness, prevents the rosin joint production, ensures that electric conductivity is good, promotes product security performance.
To sum up, the device can effectively improve product solderability requirement and antioxidant ability, and is favorable to tin to climb the wedge-shaped inclined plane of the outer PIN foot of tin parcel along the wedge-shaped tin climbing inclined plane, improves the welding firmness, prevents that the rosin joint from producing, ensures that electric conductivity is good, promotes product security performance, facilitates the use.
Drawings
Fig. 1 is a schematic view of a terminal pin stamping, integral bending and forming structure of the invention.
Fig. 2 is a schematic view of a terminal pin bending structure according to the present invention.
Fig. 3 is an enlarged schematic view of the structure at a in fig. 2 according to the present invention.
FIG. 4 is a schematic view of the injection molding structure of the present invention.
Fig. 5 is a front view of the injection molded structure of the housing of the present invention.
FIG. 6 is a side view of the housing injection molded structure of the present invention.
FIG. 7 is a schematic view of the cut outer link of the present invention.
FIG. 8 is a structural elevation view of the cut outer link of the present invention.
FIG. 9 is a side view of the construction of the cut outer link of the present invention.
FIG. 10 is a side view of the cut inner and outer connecting rods of the present invention.
Fig. 11 is a schematic structural diagram of the single shell product of the present invention.
Fig. 12 is a schematic view of the bottom structure of the single-body finished shell product of the present invention.
Fig. 13 is a side view of the housing unitary finished structure of the present invention.
Fig. 14 is an enlarged view of fig. 11 at B according to the present invention.
Reference numbers in the figures: 1. a housing body; 2. retaining walls; 3. a magnetic core accommodating groove; 4. a first pin identification mark; 5. an outer PIN; 6. a pin terminal; 7. hanging a wire groove; 8. a guide hole; 9. a groove; 10. welding a surface; 11. cutting into a cross section; 12. a wedge-shaped tin climbing inclined plane; 13. a sheet of material; 14. an outer link; 15. an inner link; 16. a first cutting position; 17. pre-folding; 18. trimming; 19. positioning holes; 20. a limiting groove; 21. a second cutting position; 22. and (7) covering.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed; the type of the electrical appliance provided by the invention is only used for reference. For those skilled in the art, different types of electrical appliances with the same function can be replaced according to actual use conditions, and for those skilled in the art, the specific meaning of the above terms in the present invention can be understood in specific situations.
Referring to fig. 1-11, a single structure of a network filter housing comprises a housing body 1, a PIN terminal 6 is disposed at the top end of the housing body 1, an outer PIN 5 is installed at the bottom end of the housing body 1, the PIN terminal 6 and the outer PIN 5 are uniformly arranged along the length direction of the housing body 1, the PIN terminal 6 and the outer PIN 5 are symmetrically arranged on the central axis of the housing body 1, a wire hanging groove 7 is disposed on the sidewall of the PIN terminal 6, a welding surface 10 is disposed at the bottom end of the outer PIN 5, a transverse plane 11 is disposed at one end of the outer PIN 5, a wedge-shaped tin climbing inclined plane 12 is disposed on the outer wall of the outer PIN 5, tin climbing inclined planes are increased on the two side surfaces, the copper exposure area of the cutting surface is reduced, an upper cover 22 is disposed at the top end of the housing body 1, retaining walls 2 are disposed at the two ends of the housing body 1, a groove 9 is, the top end of the shell body 1 is provided with a magnetic core accommodating groove 3, the magnetic core accommodating groove 3 is symmetrically arranged on the central axis of the shell body 1, the outer wall of the bottom end of the shell body 1 and the inner cavity of the magnetic core accommodating groove 3 are of a fog-surface structure, the top end of the shell body 1 is provided with a guide hole 8, one end of the guide hole 8 penetrates through the shell body 1 and extends to the outside, the side wall of the shell body 1 is provided with a first PIN position identification mark 4, the outer PIN 5 and the PIN terminal 6 are integrally formed by punching a material plate 13, the material plate 13 is provided with an outer connecting rod 14, an inner connecting rod 15, a pre-folding position 17, an edge trimming 18 and a positioning hole 19, a limiting groove 20 is arranged between the PIN terminal 6 and the outer PIN 5, a second cutting position 21 is arranged between the outer connecting rod 14 and the outer PIN 5, and a first cutting position 16 is arranged between, one end of the outer PIN foot 5 is formed into a cross section 11 and a wedge-shaped tin climbing inclined plane 12 by stamping the first cutting position 16 and the second cutting position 21.
A production process of a network filter shell monomer structure comprises the following steps: the method comprises the following steps:
s1: terminal pin punching press integrative bending shaping: putting the material plate 13 into a continuous stamping die to perform a stamping and integral bending molding process, firstly trimming 18 two sides of the material plate 13 to ensure that the material width dimension precision meets the requirement;
then, punching a positioning hole 19 on one side of the material plate 13, and accurately positioning the material belt punching blanking size through the positioning hole 19;
then, punching a pre-folding position 17 on the other side close to the material plate 13;
punching the pin terminals 6 at corresponding positions on the material plate 13 along the pre-folding positions 17;
after passing through an air compression position, punching an outer PIN foot 5 on the other side of a material plate 13 connected with the PIN terminal 6, and respectively forming an outer connecting rod 14 and an inner connecting rod 15 at the outer ends of the PIN terminal 6 and the outer PIN foot 5;
the deformation of the pins in the terminal pin bending, electroplating and injection molding processes is prevented by the connection limiting effect of the inner connecting rod 15;
after a plurality of successive air compression positions, the inner connecting rod 15 is cut off;
bending the outer PIN 5 and the PIN terminal 6 for 90 degrees for molding at the next stamping position, wherein the control range of the bending angle is between 90 and 95 degrees;
forming a terminal finished product;
s2: injection molding: the method comprises the following steps that two groups of terminal finished products are relatively placed in an injection mold, the bent parts of terminal PINs of the two groups of terminal finished products are subjected to injection molding and glue filling molding, a plurality of shell bodies 1 with connected middle parts are formed, glue is contained in a limiting groove 20, a PIN terminal 6 and an outer PIN 5 are fixed in the shell bodies 1 through the limiting groove 20, and the terminal PINs are prevented from vertically moving up and down after injection molding;
an outer terminal pin group and an inner terminal pin group are formed on the plastic shell body 1, the outer terminal pin group is connected with the outer connecting rod 14, and the inner terminal pin group is connected with the inner connecting rod 15;
s3: baking: baking the injection molded finished product to release internal stress in the finished product, wherein the baking temperature is 135-145 ℃ for 2-3 h;
s4: burr treatment: then, carrying out rough edge processing on the finished product after baking, wherein the rough edge processing step comprises the following steps: firstly, placing the baked semi-finished product into a track of a sand blasting machine, opening a conveying belt to adjust a sand blasting gun head, and aligning the rough edge part to be processed of the semi-finished product; opening an air pressure switch of the sand blasting gun head, and adjusting the air pressure to 35-50 KG; opening a sand sucker, opening a conveyer belt and each sand blasting air pressure, and performing sand blasting to remove burrs;
s5: cutting an outer side rod: the outer connecting rod 14 is cut off through a second cutting position 21;
s6: electroplating: plating a metal protection layer on the surfaces of the formed PIN terminal 6 and the outer PIN 5 in an electroplating mode, and electroplating the surfaces of the outer terminal PIN group and the inner terminal PIN group to form the metal protection layers on the outer surfaces of the outer terminal PIN group and the inner terminal PIN group respectively, wherein the plating layer is 0.5-1.5 mu m of nickel layer, and the tin layer is 4-12 mu m;
s7: removing the inner connecting rod 15: removing the inner connecting rod 15 along the first cutting position 16, and separating the inner connecting rod 15 from the inner terminal pin group on the plastic shell to obtain a plurality of network filter shells with metal terminal pins;
s8: and (5) preparing a finished product.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A single structure of a network filter shell comprises a shell body (1) and is characterized in that, the top end of the shell body (1) is provided with a PIN terminal (6), the bottom end of the shell body (1) is provided with an outer PIN (personal identification number) PIN (5), the PIN terminals (6) and the outer PIN PINs (5) are uniformly arranged along the length direction of the shell body (1), the PIN terminals (6) and the outer PIN (5) are symmetrically arranged on the central axis of the shell body (1), the side wall of the PIN terminal (6) is provided with a wire hanging groove (7), the bottom end of the outer PIN (5) is provided with a welding surface (10), one end of the outer PIN foot (5) is provided with a cross section (11), the outer wall of the outer PIN foot (5) is provided with a wedge-shaped tin climbing inclined plane (12), and the top end of the shell body (1) is provided with an upper cover (22).
2. The single housing structure of a network filter according to claim 1, wherein retaining walls (2) are disposed at two ends of the housing body (1), and a groove (9) is disposed at a top end of each retaining wall (2).
3. The single structure of a network filter housing according to claim 1, wherein the top end of the housing body (1) is provided with a magnetic core accommodating groove (3), the magnetic core accommodating groove (3) is symmetrically arranged on the central axis of the housing body (1), and the outer wall of the bottom end of the housing body (1) and the inner cavity of the magnetic core accommodating groove (3) are of a matte structure.
4. The single structure of the housing of the network filter according to claim 1, wherein a guiding hole (8) is formed at a top end of the housing body (1), one end of the guiding hole (8) extends to the outside through the housing body (1), and a first pin identification mark (4) is formed on a side wall of the housing body (1).
5. The single structure of the network filter housing according to claim 1, wherein the outer PIN (5) and the PIN terminal (6) are integrally formed by punching a material plate (13), the material plate (13) is provided with an outer connecting rod (14), an inner connecting rod (15), a pre-folding position (17), a trimming edge (18) and a positioning hole (19), a limiting groove (20) is arranged between the PIN terminal (6) and the outer PIN (5), a second cutting position (21) is arranged between the outer connecting rod (14) and the outer PIN (5), and a first cutting position (16) is arranged between the inner connecting rod (15) and the PIN terminal (6).
6. A single structure of a network filter housing according to claim 5, characterized in that the first cut (16) and the second cut (21) are punched to form a cross section (11) and a wedge-shaped tin-climbing slope (12) at one end of the outer PIN (5).
7. A production process of a network filter housing monomer structure according to any one of claims 1-6, characterized in that: the method comprises the following steps:
s1: terminal pin punching press integrative bending shaping: putting the material plate (13) into a continuous stamping die to perform a stamping and integral bending molding process, firstly trimming (18) two sides of the material plate (13) to ensure that the material width dimension precision meets the requirement;
then, punching a positioning hole (19) on one side of the material plate (13), and accurately positioning the material belt punching blanking size through the positioning hole (19);
then, punching a pre-folding position (17) on the other side close to the material plate (13);
punching pin terminals (6) at corresponding positions on the material plate (13) along the pre-folding positions (17);
after passing through an air compression position, punching an outer PIN (positive intrinsic negative) PIN (5) on the other side of a material plate (13) connected with the PIN terminal (6), and respectively forming an outer connecting rod (14) and an inner connecting rod (15) at the outer ends of the PIN terminal (6) and the outer PIN PIN (5);
the deformation of the pins in the terminal pin bending, electroplating and injection molding processes is prevented through the connection limiting effect of the inner connecting rod (15);
after a plurality of continuous air compression positions, cutting off the inner connecting rod (15);
bending the outer PIN (5) and the PIN terminal (6) for 90 degrees for molding next stamping position, wherein the control range of the bending angle is between 90 and 95 degrees;
forming a terminal finished product;
s2: injection molding: the method comprises the following steps that two groups of terminal finished products are relatively placed in an injection mold, the bent parts of terminal PINs of the two groups of terminal finished products are coated together in an injection molding manner through injection molding and glue filling molding, a plurality of shell bodies (1) connected in the middle are formed, glue is contained in a limiting groove (20), the limiting groove (20) fixes a PIN terminal (6) and an outer PIN (personal identification number) PIN (5) in the shell bodies (1), and the terminal PINs are prevented from moving vertically after injection molding;
an outer terminal pin group and an inner terminal pin group are formed on the plastic shell body (1), the outer terminal pin group is connected with an outer connecting rod (14), and the inner terminal pin group is connected with an inner connecting rod (15);
s3: baking: baking the injection molded finished product to release internal stress in the finished product, wherein the baking temperature is 135-145 ℃ for 2-3 h;
s4: burr treatment: then, carrying out rough edge processing on the finished product after baking, wherein the rough edge processing step comprises the following steps: firstly, placing the baked semi-finished product into a track of a sand blasting machine, opening a conveying belt to adjust a sand blasting gun head, and aligning the rough edge part to be processed of the semi-finished product; opening an air pressure switch of the sand blasting gun head, and adjusting the air pressure to 35-50 KG; opening a sand sucker, opening a conveyer belt and each sand blasting air pressure, and performing sand blasting to remove burrs;
s5: cutting an outer side rod: the outer connecting rod (14) is cut off through a second cutting position (21);
s6: electroplating: plating a metal protection layer on the surfaces of the formed PIN terminal (6) and the outer PIN (5) in an electroplating mode, and electroplating the surfaces of the outer terminal PIN group and the inner terminal PIN group to form metal protection layers on the outer surfaces of the outer terminal PIN group and the inner terminal PIN group respectively, wherein the plating layer is 0.5-1.5 mu m of nickel layer, and the tin layer is 4-12 mu m;
s7: removing the inner connecting rod: removing the inner connecting rod (15) along the first cutting position (16), and separating the inner connecting rod (15) from the inner terminal pin group on the plastic shell to obtain a plurality of network filter shells with metal terminal pins;
s8: and (5) preparing a finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110112093.7A CN112671361A (en) | 2021-01-27 | 2021-01-27 | Network filter shell single structure and production process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110112093.7A CN112671361A (en) | 2021-01-27 | 2021-01-27 | Network filter shell single structure and production process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112671361A true CN112671361A (en) | 2021-04-16 |
Family
ID=75414763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110112093.7A Pending CN112671361A (en) | 2021-01-27 | 2021-01-27 | Network filter shell single structure and production process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112671361A (en) |
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2021
- 2021-01-27 CN CN202110112093.7A patent/CN112671361A/en active Pending
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