A cutting needle mechanism and a pin inserting device

Abstract

The present invention relates to a needle cutting mechanism and a needle insertion device. The needle cutting mechanism includes a first shearing structure and a second shearing structure that are relatively arranged; the first shearing structure includes a first extrusion piece and a first shearing piece, and the first extrusion piece and the first shearing piece are arranged along the direction of the needle insertion; the second shearing structure includes a second extrusion piece that is compatible with the first extrusion piece, and a second shearing piece that is compatible with the first shearing piece, and the second extrusion piece and the second shearing piece are arranged along the direction of the needle insertion; the first extrusion piece and the second extrusion piece can move toward each other, and the working gap between the first extrusion piece and the second extrusion piece during extrusion is smaller than the diameter of the wire to be processed; the first shearing piece and the second shearing piece can move toward each other until they collide with each other. By adopting the above structure, the needle material can be firmly plugged into the PCB board, so as to solve the problems in the prior art that the metal needle material and the PCB board hole are easy to loosen and cannot be firmly plugged in, and the metal needle material is easy to break and needs to be repaired.

Description

Technical Field

[0001] The present invention relates to a processing device for a PCB circuit board of an LED driving power supply, and particularly relates to a pin cutting mechanism and a pin inserting device. Background Art

[0002] On the PCB boards of electronic products such as LED driving power supplies, a large number of insulated electronic wire materials need to be inserted. These electronic wire materials are relatively thin wire materials, which are used to complete the conduction (transmission) of electricity (signals). The traditional plugging method is as follows: purchase electronic wire materials with insulating outer skins of a predetermined length from the market, and workers use manual operation methods to insert the skinned electronic wire materials into the hole positions of the PCB board; then, the electronic wire materials are welded and fixed to the PCB board through a welding process; thereafter, according to the requirements of subsequent processes, the insulating outer skins of the electronic wire materials can be peeled off; then, workers visually check whether there are problems such as false soldering and missed insertion in the board holes of the PCB board. This operation method not only has low manual work efficiency, low reliability in the whole working process, and cannot guarantee product quality, but also has high labor intensity of workers and high labor costs of enterprises, which does not meet the requirements of today's enterprise automation, intelligentization, and large-scale batch production.

[0003] In recent years, with the optimization and upgrading of the industrial structure, the automation industry has developed rapidly, promoting the continuous development of many technical industries such as machinery, information technology, electronic circuits, mechanical design, optical design, thermal design, embedded software, and system reliability design. Especially in the industries related to electronic circuits, the level of automation technology will directly affect the quality, output, cost, labor productivity, and the achievement of production and profit target expectations of products. Therefore, automated pin inserting devices have emerged on the market, greatly alleviating the pressure on enterprises in terms of labor costs. However, there are still some technical problems that need to be urgently solved in the existing pin inserting technology, including the matching problem between the aperture of the PCB board hole and the outer diameter of the pin material. For example, for a metal pin material with an outer diameter specification of 0.4 mm made according to the traditional process, the corresponding PCB board hole accuracy needs to reach 0.42 mm - 0.48 mm to achieve the plugging of this specification of metal pin material and the PCB board; however, for PCB board manufacturers, it is very difficult to achieve a board hole accuracy of 0.42 mm - 0.48 mm; and when the existing pin inserting devices insert metal pin materials, they cannot solve the problems that the thin metal pin materials are easy to loosen from the PCB board holes and cannot be stably plugged, and the metal pin materials are easy to break during the processing process, plugging process, or transportation process and need to be repaired, and cannot be well set for production according to the needs of customers and products.

[0004] Chinese invention patent CN103781287B discloses a full-automatic mechanical high-speed pin inserting machine, which includes: a frame, a first feeding device, a workbench, a pin inserting mechanism and an automatic discharging device. The pin inserting mechanism includes: a cutting device, a pin inserting device and a driving device; the cutting device includes: a cutting tool seat, a left cutting tool and a right cutting tool movably installed in the cutting tool seat. The cutting edges of the left cutting tool and the right cutting tool are exposed in the cutting space formed in the middle of the cutting tool seat, and the other ends thereof are exposed outside both sides of the cutting tool seat and respectively abut against the ends of the first and second driving rods in the driving device; the pin inserting device includes: a movable seat that can move up and down, a fixed chuck and a movable chuck installed at the lower end of the movable seat, and a pressing rod for cooperating with the fixed chuck and the movable chuck to clamp the steel needle and insert it into the PCB board. The ends of the fixed chuck, the movable chuck and the pressing rod all fall into the cutting space. This pin inserting machine does not make any adjustment to the radial dimension of the steel wire body to be inserted. When it is necessary to insert the steel wire into a PCB board hole with a larger radial dimension than the steel wire, it cannot achieve a stable insertion, and the thin steel wire is likely to become loose from the PCB board hole; moreover, this patent is only applicable to realizing the tight fit between the hard steel wire and the PCB board, and cannot insert the soft metal wire into the board hole of the PCB board.

[0005] Chinese utility model patent CN208117146U discloses a multi-functional full-automatic pin inserting machine, which can bend the needle to be processed into the required L shape and insert the L-shaped needle after the bending into the corresponding product. However, this pin inserting machine also has the problem that the thin metal needle material cannot be stably inserted into the PCB board hole and is likely to become loose.

[0006] Chinese invention patent application CN110582194A discloses a quick pin insertion mechanism, which can be used in conjunction with a pin support member, which is located directly below the pin insertion nozzle, and the top of the pin support member is provided with a pin support groove aligned with the pin insertion nozzle hole of the pin insertion nozzle. And the pin pressing cutter can press the top of the cut needle material after the needle cutting is completed, and then the cam-type pin insertion drive device can drive the pin insertion nozzle and the pin pressing cutter to move downward, so that the needle material located in the pin insertion nozzle hole is inserted into the designated hole position of the circuit board. When the needle material is inserted into the hole position of the circuit board along with the pin insertion nozzle and the pin pressing cutter, since the pin support member is located at the bottom of the hole position of the circuit board, the pin support member will support the bottom of the needle material passing through the hole position of the circuit board, so that under the squeezing action of the top pin pressing cutter and the bottom pin support member, the lower end of the needle material extending out of the pin insertion nozzle will expand and deform, so that the lower end of the needle material can be firmly installed in the hole position of the circuit board and is not easy to fall off. However, the pin insertion mechanism is only suitable for obtaining a hard metal needle material with an expansion deformation at the lower end by squeezing the two axial ends of the hard metal wire, and is not suitable for the connection between the soft metal needle material and the PCB board; and it cannot guarantee that the expansion deformation part is exactly the part to be inserted into the hole of the PCB board. It is possible that the relative squeezing of the two ends causes the expansion deformation of the hard metal needle material as a whole. In addition, when the quick pin insertion mechanism is used to plug the soft metal needle material, the needle pressing cutter presses the top of the soft metal needle material, and the needle supporting member supports the bottom of the soft metal needle material. Under the mutual squeezing action of the needle pressing cutter and the needle supporting member, the soft metal needle material will bend because it cannot withstand the pressure of the needle pressing cutter. Therefore, the pressure of the needle pressing cutter cannot act on the lower end of the soft metal needle material, resulting in the damage of the soft metal needle material. At the same time, the lower end of the soft metal needle material cannot expand and deform, making it difficult to be firmly inserted into the hole of the circuit board. Therefore, the technical solution disclosed in Chinese invention patent application CN110582194A has many problems and is not suitable for the insertion of soft metal needle materials.

[0007] Therefore, it is urgent to develop a needle cutting mechanism and a matching needle insertion device that can firmly insert the needle material into the PCB board when the outer diameter of the needle material and the hole diameter of the PCB board are not highly matched. Summary of the invention

[0008] To this end, it is necessary to provide a needle cutting mechanism and a matching needle insertion device, which can firmly insert the needle material into the PCB board when the outer diameter of the needle material and the hole diameter of the PCB board are not highly matched, so as to solve the problems in the prior art that the metal needle material and the PCB board hole are easily loose and cannot be firmly inserted, and the metal needle material is easily broken during the processing, insertion or transportation process and needs to be repaired.

[0009] To achieve the above-mentioned object, a first aspect of the present invention provides a needle cutting mechanism, which comprises a first shearing structure and a second shearing structure arranged opposite to each other;

[0010] The first shearing structure comprises a first extrusion piece and a first shearing piece, and the first extrusion piece and the first shearing piece are arranged along the pin insertion direction;

[0011] The second shearing structure comprises a second extrusion piece matched with the first extrusion piece, and a second shearing piece matched with the first shearing piece, and the second extrusion piece and the second shearing piece are arranged along the pin insertion direction;

[0012] The first extrusion member and the second extrusion member are capable of moving toward each other, and a working gap between the first extrusion member and the second extrusion member during extrusion is smaller than a diameter of the wire to be processed;

[0013] The first shearing member and the second shearing member can move toward each other until they come into conflict with each other, so as to cut the wire material to be processed.

[0014] As a preferred embodiment, the widths of the extrusion surfaces of the first extrusion piece and the second extrusion piece are both smaller than the diameter of the wire to be processed;

[0015] The extrusion surface is a surface in contact with the outer peripheral surface of the wire to be processed.

[0016] As a preferred implementation, both the first extrusion piece and the second extrusion piece are convex structures, and the convex structures include the extrusion surface and four inclined side walls.

[0017] As a preferred implementation, both the first extrusion piece and the second extrusion piece are convex structures, the extrusion surface is a square surface, a curved surface or a pointed portion, and the pointed portion is a line or a point.

[0018] As a preferred embodiment, the first extrusion member and the second extrusion member are both provided with a groove and an extrusion portion at opposite ends thereof;

[0019] The length direction of the groove is parallel to the axis of the wire to be processed, and the groove separates the extrusion part into a first extrusion part and a second extrusion part;

[0020] The width of the groove is smaller than the diameter of the wire to be processed.

[0021] As a preferred embodiment, the second extrusion member is a groove structure;

[0022] The width of the groove structure is greater than or equal to the diameter of the wire to be processed;

[0023] The extrusion surface of the groove structure is a curved surface, and the extrusion surface is a surface in contact with the outer peripheral surface of the wire to be processed.

[0024] As a preferred embodiment, the surface of the second shearing member in contact with the outer peripheral surface of the wire to be processed is a planar structure, and the first shearing member includes a cutting head;

[0025] “The first shearing member and the second shearing member can move toward each other until they come into conflict with each other so as to cut the wire material to be processed” specifically includes: the first shearing member and the second shearing member can move toward each other until the cutting head comes into conflict with the planar structure so as to cut the wire material to be processed.

[0026] As a preferred implementation, the first extrusion piece and the first shearing piece are spaced apart along the pin insertion direction, and the second extrusion piece and the second shearing piece are spaced apart along the pin insertion direction.

[0027] A second aspect of the present invention provides a pin insertion device, which includes a frame, on which a shearing assembly, a pin clamping assembly and a pin pressing assembly are provided;

[0028] The shearing assembly comprises the cutting needle mechanism as described in the first aspect of the present invention, a first transmission mechanism and a power mechanism, wherein the first transmission mechanism drives the first shearing structure and the second shearing structure to move toward each other, and the power mechanism drives the first transmission mechanism;

[0029] The pressing needle assembly is arranged between the shearing assembly and the clamping needle assembly, and the pressing needle assembly is used to press the top end of the needle material;

[0030] The clamping needle assembly is used to clamp the needle material and move the needle up and down;

[0031] The needle material is obtained by extruding and shearing the wire material to be processed by the needle cutting mechanism.

[0032] As a preferred embodiment, the needle insertion device described in the second aspect of the present invention further includes a guide needle assembly;

[0033] The guide needle assembly comprises an upper guide needle block and / or a lower guide needle block;

[0034] The two ends of the upper guide needle block are respectively sleeved on the first shear structure and the second shear structure, and the upper guide needle block is provided with a through hole perpendicular to the length direction of the upper guide needle block;

[0035] When the first shearing member and the second shearing member collide with each other, the center point of the perforation is aligned with the point of contact between the first shearing member and the second shearing member; and / or

[0036] The lower guide pin block is inserted into the gap between the second extrusion member and the second shearing member. One end of the lower guide pin block facing the wire to be processed is provided with a guide pin groove with a circular arc cross-section, and the guide pin groove is adapted to the diameter of the wire to be processed;

[0037] When the first shearing member and the second shearing member are in contact with each other, the center point of the guide pin groove is aligned with the contact point of the first shearing member and the second shearing member.

[0038] As a preferred embodiment, a guiding portion is provided at the notch of the guide pin groove for guiding the wire to be processed into the guide pin groove.

[0039] As a preferred embodiment, the third guiding portion is a V-shaped opening structure extending radially outward from the notch of the guide pin groove.

[0040] As a preferred embodiment, the first transmission mechanism includes a rotating main shaft, a cam assembly and a swing rod assembly, and the cam assembly is sleeved on the rotating main shaft;

[0041] The swing rod assembly includes a first swing rod and a second swing rod, and the cam assembly includes a first cam and a second cam;

[0042] One end of the first swing rod is provided with a first swing rod wheel, one end of the second swing rod is provided with a second swing rod wheel, the protruding portion of the first cam forms a rotational contact with the first swing rod wheel, and the protruding portion of the second cam forms a rotational contact with the second swing rod wheel;

[0043] The other end of the first swing rod is provided with a third swing rod wheel, one end of the second swing rod is provided with a fourth swing rod wheel, the third swing rod wheel is movably matched with the end of the first shearing structure, and the fourth swing rod wheel forms a movable match with the end of the second shearing structure.

[0044] Different from the prior art, the above technical solution provides a needle cutting mechanism and a needle insertion device having the same. The needle cutting mechanism includes a first shearing structure and a second shearing structure arranged opposite to each other; the first shearing structure includes a first extrusion piece and a first shearing piece, the first extrusion piece and the first shearing piece are arranged along the needle insertion direction; the second shearing structure includes a second extrusion piece adapted to the first extrusion piece, and a second shearing piece adapted to the first shearing piece, the second extrusion piece and the second shearing piece are arranged along the needle insertion direction; the first extrusion piece and the second extrusion piece can move toward each other, and the working gap between the first extrusion piece and the second extrusion piece during extrusion is smaller than the diameter of the wire to be processed; the first shearing piece and the second shearing piece can move toward each other until they collide with each other to cut the wire to be processed. By providing a first extrusion piece and a second extrusion piece, and because the working clearance between the first extrusion piece and the second extrusion piece during extrusion is smaller than the diameter of the wire to be processed, the wire to be processed can be extruded, and the outer peripheral surface of the wire to be processed bulges outward along its radial direction due to pressure to form a bulging portion, so that the outer diameter of the wire increases; by providing a first shearing piece and a second shearing piece, the wire segment that has been extruded and formed can be cut to obtain a needle material suitable for plugging into a PCB board. By adopting the needle cutting mechanism of the present invention, the wire can be extruded to form a bulging portion before plugging, and then the wire segment with the bulging portion formed on the wire can be cut to obtain the needle material, so that the needle material can be firmly plugged into the board hole of the PCB board. In addition, the needle cutting mechanism can not only realize the stable plugging of hard metal needle materials, but is also suitable for the stable plugging of soft metal needle materials, which well solves the problems in the prior art that metal needle materials and PCB board holes are easy to loosen and cannot be firmly plugged in. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a structural schematic diagram of a needle material described in a specific implementation method;

[0046] Figure 2 It is a front view of a needle material described in a specific embodiment;

[0047] Figure 3 It is a front view of a needle cutting mechanism described in a specific implementation manner;

[0048] Figure 4 It is a structural schematic diagram of the first shear structure in a specific implementation manner;

[0049] Figure 5 It is a structural schematic diagram of another first shearing structure described in a specific implementation manner;

[0050] Figure 6 It is a partial structural schematic diagram of another needle cutting mechanism described in a specific implementation manner;

[0051] Figure 7Schematic diagram of the structure of another kind of needle material described in the specific implementation manner;

[0052] Figure 8 Front view of another kind of needle material described in the specific implementation manner;

[0053] Figure 9 Partial front view of a kind of needle cutting mechanism described in the specific implementation manner;

[0054] Figure 10 Partial schematic diagram of the structure of another kind of first shearing structure described in the specific implementation manner;

[0055] Figure 11 For Figure 10 Enlarged view of part A in

[0056] Figure 12 Schematic diagram of the structure of another kind of needle material described in the specific implementation manner;

[0057] Figure 13 Schematic diagram of the structure of another kind of needle material described in the specific implementation manner;

[0058] Figure 14 Schematic diagram of the structure of another kind of needle material described in the specific implementation manner;

[0059] Figure 15 Partial schematic diagram of the structure of another kind of first shearing structure described in the specific implementation manner;

[0060] Figure 16 Partial schematic diagram of the structure of another kind of first shearing structure described in the specific implementation manner;

[0061] Figure 17 Schematic diagram of the structure of a kind of PCB board described in the specific implementation manner;

[0062] Figure 18 Schematic diagram of the structure of the pin inserting device described in the specific implementation manner;

[0063] Figure 19 Schematic diagram of the structure of the shearing assembly described in the specific implementation manner;

[0064] Figure 20 Partial schematic diagram of the structure of the clamping and pin inserting assembly described in the specific implementation manner;

[0065] Figure 21 Schematic diagram of the structure of the first jaw described in the specific implementation manner;

[0066] Figure 22 Schematic diagram of the structure of the second jaw described in the specific implementation manner;

[0067] Figure 23Schematic diagram of the partial structure of the second transmission mechanism described in the specific implementation manner;

[0068] Figure 24 Schematic diagram of the partial structure of the pin driving mechanism described in the specific implementation manner;

[0069] Figure 25 Schematic diagram of the partial structure of the pin driving mechanism described in the specific implementation manner;

[0070] Figure 26 Schematic diagram of the structure in which the lever swing arm and the swing sub-arm are meshed and linked;

[0071] Figure 27 Schematic diagram of the partial structure of the pin inserting device described in the specific implementation manner;

[0072] Figure 28 Schematic diagram of the structure in which the needle guiding component and the needle cutting mechanism are cooperatively arranged as described in the specific implementation manner;

[0073] Figure 29 Schematic diagram of the structure of the upper needle guiding block described in the specific implementation manner;

[0074] Figure 30 Schematic diagram of the structure of the lower needle guiding block described in the specific implementation manner.

[0075] Explanation of reference numerals:

[0076] 1. Needle material; 11. Body section; 12. Bulging section; 121. Bulging part; 122. Depressed part; 123. Supporting part; 13. Pin section; 2. PCB board; 21. Circuit board body; 22. Jack; 3. Needle cutting mechanism; 31. First shearing structure; 311. First pressing part; 312. First shearing part; 3121. Cutting tool head (first cutting tool head); 32. Second shearing structure; 321. Second pressing part; 322. Second shearing part; 3222. Second cutting tool head; 3223. Planar structure; 33. Shearing shaft; 34. Groove; 35. Pressing part; 351. First pressing part; 352. Second pressing part; 4. Support base; 41. Upper crossbeam plate; 42. Front crossbeam plate; 43. Wire feeding mechanism; 44. Steel wire straightening mechanism; 45. Upper pressing plate; 46. Motor base; 461. Reducer; 462. Driving motor; 47. Rotating main shaft; 471. First needle cutting cam; 472. Second needle cutting cam; 473. Needle clamping cam; 474. Needle inserting cam; 5. Frame; 51. Wire feeding motor; 52. Wire feeding module; 521. Active wire feeding wheel; 522. Pressing wheel; 523. Pressing movable part; 524. Spring pressing seat; 53. Wire guiding component; 6. Shearing component; 61. First swing rod; 611. First swing rod wheel; 612. Third swing rod wheel; 62. Second swing rod; 621. Second swing rod wheel; 622. Fourth swing rod wheel; 63. Needle cutting base; 7. Needle guiding component; 71. Upper needle guiding block; 711. Perforation; 72. Lower needle guiding block; 721. Needle guiding groove; 722. Third guiding part; 723. Step-like structure; 8. Clamping and needle inserting component; 81. First clamping jaw; 811. First clamping groove; 812. First tooth; 813. Second tooth; 814. First slider; 82. Second clamping jaw; 821. Second clamping groove; 822. Third tooth; 823. Fourth tooth; 824. Second slider; 83. Needle clamping swing arm seat; 84. Needle clamping swing arm; 841. Needle clamping swing arm wheel; 842. Needle clamping swing arm branch; 85. Needle clamping module; 851. Lever swing arm; 8511. First transmission tooth; 852. Swing sub-arm; 8521. Second transmission tooth; 86. Needle inserting swing arm; 861. Needle inserting swing arm wheel; 87. Swing arm connecting rod; 9. Needle pressing component; 91. Slide groove seat; 92. Swing rod seat; 93. Needle pressing swing rod; 931. Needle pressing swing rod wheel; 94. Linear cam. Detailed implementation manners

[0077] To describe in detail the technical content, structural features, achieved objectives and effects of the technical solution, the following provides a detailed description in combination with specific embodiments and with reference to the accompanying drawings.

[0078] In the embodiments of the present invention, the needle material involved is obtained by extrusion molding and shearing of wire materials, and the wire materials include hard-state metal wire materials and soft-state metal wire materials. Suitable metals can be selected from one of steel, copper, or any alloy containing the above metals, as long as the wire materials meet the electrical design requirements of the PCB board. For example, hard-state steel wires and soft-state steel wires can be directly purchased from the market. In addition, the radial cross-sectional shape of the wire material is not limited, and square or circular wire materials can be selected according to actual needs to insert square needles or round needles on the PCB board.

[0079] Limited by the mechanical processing technology of the PCB board, for example, in some embodiments, the minimum hole accuracy of the PCB board can only reach 0.42 mm - 0.48 mm (±0.03 mm), which is larger than the metal needle material with an outer diameter specification of 0.4 mm. When the existing pin insertion equipment inserts the metal needle material, it cannot solve the problems that the fine metal needle material (especially the soft-state metal needle material) is easy to loosen from the PCB board holes, cannot be stably inserted, and is easy to break during the processing or transportation process and requires rework, and cannot be well set for production according to the needs of customers and products.

[0080] In order to enable the metal needle material to be inserted into the PCB board with larger board holes, this embodiment provides a needle material for inserting into the PCB board. The needle material sequentially includes a body section and a bulging section along the axial direction. The body section is a solid structure, and the bulging section includes a bulging portion that bulges radially outward along the bulging section by being pressed on the outer peripheral surface. With such a structure, for example, a needle material with an outer diameter specification of 0.4 mm, the thickness in the outward bulging direction of the bulging portion can reach 0.6 - 0.8 mm, and this needle material can also be suitable for inserting into the PCB board with larger hole diameters (0.48 mm - 0.58 mm, ±0.05 mm), thereby reducing the accuracy requirements for the traditional PCB board holes (0.42 mm - 0.48 mm, ±0.03 mm), reducing the processing difficulty of the board holes, and alleviating the production pressure of the PCB board processing factory. Therefore, the needle material can be stably inserted into the board holes of the PCB board through the bulging section and will not loosen. In addition, with such a structure, not only can the stable insertion of the hard-state metal needle material be achieved, but also the stable insertion of the soft-state metal needle material can be achieved, which well solves the problems that the fine metal needle material (especially the soft-state metal needle material) is easy to loosen from the PCB board holes and cannot be stably inserted in the prior art.

[0081] The present invention will be described below in conjunction with specific embodiments.

[0082] Such as Figure 1 And Figure 2As shown, the present embodiment provides a needle material 1 for being plugged into a PCB board. The needle material 1 includes a main body section 11 and a bulging section 12 in sequence along the axial direction. The main body section 11 is a solid structure, and the bulging section 12 includes a bulging portion 121 that bulges outward radially along the bulging section 12 and is formed by pressure on the outer peripheral surface. Correspondingly, the pressure surfaces on both sides of the bulging section 12 are planar structures. In the present embodiment, for example, a needle material 1 with an outer diameter of 0.4 mm, the thickness of the bulging portion 121 in the outward expansion direction can reach 0.52 mm, which is larger than the aperture of the hole of the PCB board (0.42 mm-0.48 mm, ±0.03 mm). Therefore, the needle material 1 can be firmly plugged into the hole of the PCB board through the bulging section 12, and will not get loose.

[0083] In another embodiment, a needle cutting mechanism 3 is provided for cutting and extruding the needle material 1 as described in the above embodiment, see Figure 3 The needle cutting mechanism 3 includes a first shearing structure 31 and a second shearing structure 32 which are arranged opposite to each other. The first shearing structure 31 includes a first extrusion piece 311 and a first shearing piece 312. The first extrusion piece 311 and the first shearing piece 312 are arranged along the needle insertion direction ( Figure 3 The second shearing structure 32 includes a second extrusion piece 321 matched with the first extrusion piece 311, and a second shearing piece 322 matched with the first shearing piece 312, and the second extrusion piece 321 and the second shearing piece 322 are arranged along the needle insertion direction. The first extrusion piece 311 and the second extrusion piece 321 can move toward each other to extrude the outer peripheral surface of the wire. The working gap between the first extrusion piece 311 and the second extrusion piece 321 during extrusion is smaller than the diameter of the wire (i.e., the diameter of the main body section 11 of the needle material 1). The first shearing piece 312 and the second shearing piece 322 can move toward each other until they collide with each other, so as to cut the extruded wire segment on the wire to obtain the needle material 1. In addition, the first extrusion piece 311 and the second extrusion piece 321 always retain a certain working gap during extrusion to prevent the extrusion pieces from colliding with each other, thereby increasing the working life of the extrusion pieces; at the same time, the structural strength of the needle material is ensured not to be damaged.

[0084] Here, it should be noted that in the context of the specification of the present invention, the term "moving towards each other / moving" refers to the relative movement of two components, and it should not be understood that the two components necessarily undergo absolute movement simultaneously. For example, it can be the movement of the first pressing member 311 (which is movable relative to the machine table) relative to the second pressing member 321 (which is fixed relative to the machine table), or the movement of the second pressing member 321 (which is movable relative to the machine table) relative to the first pressing member 311 (which is fixed relative to the machine table), or the first pressing member 311 (which is movable relative to the machine table) and the second pressing member 321 (which is movable relative to the machine table) moving relative to each other simultaneously. For another example, it can be the movement of the first shearing member 312 (which is movable relative to the machine table) relative to the second shearing member 322 (which is fixed relative to the machine table), or the movement of the second shearing member 322 (which is movable relative to the machine table) relative to the first shearing member 312 (which is fixed relative to the machine table), or the first shearing member 312 (which is movable relative to the machine table) and the second shearing member 322 (which is movable relative to the machine table) moving relative to each other simultaneously.

[0085] In this embodiment, as Figure 3 and 4 shown, the first pressing member 311 and the first shearing member 312 (the second pressing member 321 and the second shearing member 322) can be arranged on the same shearing shaft 33 and driven by the same transmission mechanism to perform pressing and shearing operations simultaneously. In other embodiments, the first pressing member 311 and the first shearing member 312 (the second pressing member 321 and the second shearing member 322) can be separately and independently arranged and driven by different transmission mechanisms to perform pressing and shearing operations in sequence; and the sequence of the pressing and shearing operations is not limited and can be determined according to the specific process requirements and the height of the setting positions of the pressing member and the shearing member (arranged along the direction of the pin). Here, it should be noted that when one of the first pressing member 311 or the second pressing member 321 is fixed relative to the machine table, it can be understood that since it is fixed, there is no need to configure a transmission mechanism to drive the fixed component; similarly, when one of the first shearing member 312 or the second shearing member 322 is fixed relative to the machine table, there is no need to configure a transmission mechanism to drive the fixed component.

[0086] In this embodiment, as Figure 4 shown, the widths of the pressing surfaces of the first pressing member 311 and the second pressing member 321 ( Figure 4 the plane enclosed by the vertices indicated by a - d in

[0087] are both greater than the diameter of the wire (i.e., the diameter of the body section 11 of the pin material 1), and the pressing surface is the surface that contacts the outer peripheral surface of the bulged section 12 of the pin material 1.Figure 3 and Figure 4 As shown, both the first extruding member 311 and the second extruding member 321 are convex structures. The protruding direction of the convex structure is towards the wire. After the first extruding member 311 and the second extruding member 321 move towards each other and extrude the outer peripheral surface of the wire, the compressed surfaces on both sides of the bulging section 12 of the needle material 1 obtained by extrusion are flat structures (see Figure 1 and Figure 2 ). In other embodiments, the first extruding member 311 is a convex structure, and the second extruding member 321 is a groove structure (as shown in Figure 5 and Figure 6 ), the width of the groove structure is greater than or equal to the diameter of the body section 11 of the needle material 1; the extruding surface of the groove structure ( Figure 5 the plane surrounded by the vertices indicated by a - d in) is a curved surface, and the extruding surface is the surface that contacts the outer peripheral surface of the wire to be processed. Here, it should be noted that the width of the groove structure can be greater than or equal to the outer diameter of the wire (i.e., the diameter of the body section 11), as long as the wire can be located within the groove. This groove structure can play a role in guiding and positioning the wire, so that the first extruding member 311 can align with the middle area of the outer peripheral surface of the wire for extrusion. During the extrusion working process, after the first extruding member 311 and the second extruding member 321 move towards each other and extrude the outer peripheral surface of the wire, the outer peripheral surface of the bulging section 12 of the needle material 1 obtained by extrusion that contacts the extruding surface of the first extruding member 311 is compressed to form a flat structure, while the outer peripheral surface that contacts the extruding surface of the second extruding member 321 bulges radially outwards to form a bulging portion with an arc structure (not shown). By using the cutting needle mechanism 3 provided in the above - mentioned embodiment, through the relative movement of the first extruding member 311 and the second extruding member 321 towards each other, during the movement, the outer peripheral surface of the wire is relatively extruded, as shown in Figure 1 and Figure 2As shown, a bulging section 12 is formed on the wire after being extruded, and the bulging section 12 includes a bulging portion 121 that is formed by the pressure on the outer peripheral surface and bulges outward radially along the bulging section 12, so that the outer diameter of the wire becomes larger (for example, from 0.4mm to 0.52mm); and the pressure surfaces on both sides of the bulging section 12 (or the pressure surface on one side) are planar structures. The first shearing piece 312 and the second shearing piece 322 move toward each other and move until they collide with each other to cut off the extruded line segment on the wire to obtain the needle material 1. The needle material 1 can be firmly plugged into the board hole of the PCB board through the bulging section 12, and will not get loose. Before plugging, the wire is extruded to form a bulging section 12 in advance, and then the line segment formed with the bulging section 12 on the wire is cut off to obtain the needle material 1, so that the needle material 1 can be firmly plugged into the board hole of the PCB board. In addition, the needle cutting mechanism 3 can not only realize the stable insertion of hard metal needle materials, but also realize the stable insertion of soft metal needle materials, which well solves the problems in the prior art that small metal needle materials (especially soft metal needle materials) are easy to loosen and cannot be stably inserted into the holes of PCB boards.

[0088] However, if Figure 2 As shown, after the metal needle material is squeezed, the compression direction of the bulging section 12 ( Figure 2 The thickness of the needle material 1 (in the direction of the arrow in the figure) is very small (thin), making it difficult to support the slender main body section 11, and it is easy to break during production and transportation, which may require return to the factory for repair. Taking the needle material 1 formed by processing a wire with an outer diameter of 0.4mm (i.e., the outer diameter of the main body section 11 is 0.44mm) as an example, when the thickness of the bulging portion 121 in the outward expansion direction reaches 0.52mm, if the bulging section 12 of the needle material 1 continues to be flattened, the thickness of the bulging section 12 in the compression direction is too thin, and the structure of the bulging section 12 is squeezed and destroyed, with extremely low toughness, and it is very easy to bend and break, and the product quality cannot be guaranteed. Moreover, during the plugging process, when the tiny needle material 1 is plugged into the even smaller hole (0.42mm-0.48mm, ±0.03mm) of the PCB board through the bulging section 12 (outer diameter 0.52mm), it is easy for the hole position to be misaligned and plugged into the PCB board body, which in turn causes machine failure, low plugging accuracy, slow running speed, inability to achieve high-speed plugging, and a very high rework rate. In addition, if the tiny needle material 1 is plugged into an even smaller hole of the PCB board, in the subsequent soldering process, it is difficult for the tin to penetrate from the bottom of the board, which is prone to leaking solder and cold soldering.

[0089] Based on this, in another embodiment of the present invention, Figure 7 and Figure 8As shown, another kind of pin material 1 for plugging into a PCB board is provided. The pin material 1 sequentially includes a body section 11 and a bulging section 12 along the axial direction. The body section 11 is a solid structure, and the bulging section 12 includes a bulging portion 121 that bulges radially outward along the bulging section 12 formed by the compression of the outer peripheral surface; a recessed portion 122 is formed on the outer peripheral surface of the bulging section 12 by compression. As Figure 7 shown, the width of the recessed portion 122 (i.e., the width of the recessed portion 122 at the opening of the outer peripheral surface of the bulging section 12) is smaller than the diameter of the body section 11, and the recessed portion 122 is a wedge-shaped groove; and the bulging portion 121 has an arc-shaped structure, so that the overall outer diameter of the bulging section 12 is increased, thus not only increasing the contact area between the bulging section 12 and the hole wall of the PCB board hole, but also enhancing the support of the bulging section 12 for the slender body section 11, and it is not easy to occur phenomena such as bending and breaking, improving the stability after plugging.

[0090] In this embodiment, the bulging portion 121 can be an arc-shaped structure that bulges radially outward along the bulging section 12 formed by the compression of a single side surface (see Figure 7 ); the bulging portion 121 can also be an arc-shaped structure that bulges radially outward along the bulging section 12 formed by the compression of opposite side surfaces (see Figure 8 ).

[0091] In this embodiment, the bottom of the wedge-shaped groove (recessed portion 122) can be a plane, a curved surface, a pointed line or a point.

[0092] A kind of pin material 1 for plugging into a PCB board provided in this embodiment has the following advantages:

[0093] (1) Before plugging, the wire is extruded and formed into the bulging section 12 in advance, and then the wire segment with the bulging section 12 formed thereon is cut to obtain the pin material 1, so that the pin material 1 can be stably plugged into the board hole of the PCB board.

[0094] (2) The bulging portion 121 has an arc-shaped structure, so that the overall outer diameter of the bulging section 12 is increased, thus not only increasing the contact area between the bulging section 12 and the hole wall of the PCB board hole, but also enhancing the support of the bulging section 12 for the slender body section 11. Different from the embodiments shown in Figure 1 、 2 , in this embodiment, there is no structure that is particularly weak in certain directions. Therefore, when subjected to external forces in different directions, it is not easy to occur phenomena such as bending and breaking, improving the stability after plugging.

[0095] (3) According to the extrusion strength, the overall outer diameter of the bulging section 12 can be adjusted accordingly according to the accuracy of the PCB board holes to be inserted. For example, for a needle material 1 with an outer diameter specification of 0.4 mm, the overall outer diameter of its bulging section 12 can reach 0.6 - 0.8 mm, which is larger than the aperture diameter of traditional PCB board holes (0.42 mm - 0.48 mm, ±0.03 mm), and stable insertion can be achieved.

[0096] (4) For example, the needle material 1 formed by processing a wire with an outer diameter specification of 0.4 mm (i.e., the outer diameter of the body section 11 is 0.44 mm). Since the overall outer diameter of the bulging section 12 of the needle material 1 can reach up to 0.8 mm at most, the needle material 1 can also be suitable for insertion into a PCB board with a larger aperture (0.48 mm - 0.58 mm, ±0.05 mm), thereby reducing the requirement for the accuracy of the PCB board holes, reducing the processing difficulty of the board holes, and alleviating the production pressure of the PCB board processing factory.

[0097] (5) During the insertion process, when the small needle material 1 is inserted into the PCB board hole (0.48 mm - 0.58 mm, ±0.05 mm) with an increased aperture through the bulging section 12 (outer diameter 0.6 - 0.8 mm), the hole position docking is more accurate, then the machine can run at high speed, and the insertion stability is better.

[0098] (6) After using a PCB board with a larger aperture, it is beneficial to the subsequent soldering process. During the soldering process, the solder can penetrate from the gaps in the PCB board holes where the needle material 1 is inserted, so as to better achieve the tight fit between the needle material 1 and the PCB board holes, and effectively avoid the phenomena of solder leakage and false soldering.

[0099] Please refer to Figure 3 、 Figures 9 - 11 , in another embodiment, another cutting needle mechanism 3 is provided for shearing and extruding and forming the needle material 1 as described in the above embodiment. Among them, the widths of the extrusion surfaces ( Figure 10 and Figure 11 the plane enclosed by the vertices indicated by a - d therein) of the first extrusion member 311 and the second extrusion member 321 are both smaller than the diameter of the wire (i.e., the diameter of the body section 11 of the needle material 1). During the extrusion operation process, after the first extrusion member 311 and the second extrusion member 321 move towards each other and extrude the outer peripheral surface of the wire, the pressure - receiving surface of the bulging section 12 of the extruded needle material 1 is recessed inward to form a recessed portion 122; the needle material 1 forms a bulging portion 121 that bulges radially outward along the bulging section 12 due to the pressure on its outer peripheral surface (see Figure 8 ).

[0100] Please refer to Figure 10 , in this embodiment, the extrusion heads of the first extrusion member 311 and the second extrusion member 321 are both convex structures, including the extrusion surface ( Figure 10and Figure 11 a plane enclosed by the vertices indicated by a - d in Figure 11 ) and four inclined side walls. With an extrusion head having such a structure, after extruding the outer peripheral surface of the wire, the bulging section 12 of the needle material 1 obtained by extrusion can form a bulging portion 121 that bulges uniformly outward, and the whole of the bulging section 12 is in an ellipsoidal shape (see Figure 7 and Figure 8 ). During the process of being inserted into the PCB board, through the ellipsoidal bulging section 12, the contact area between the needle material 1 and the hole wall of the hole in the PCB board can be further increased, and the supporting effect of the bulging section 12 on the slender body section 11 can be enhanced, and phenomena such as bending and breaking are not likely to occur, further improving the stability after insertion.

[0101] In addition, it should be noted that in this embodiment, the shapes of the extrusion surfaces of the first extrusion member 311 and the second extrusion member 321 are not limited to Figure 10 the four - corner plane structure in Figure 10 ( Figure 10 and Figure 11 a plane enclosed by the vertices indicated by a - d in Figure 11 ), it can also be a curved surface (such as a spherical surface, etc.), or a pointed structure, and the tip of the pointed structure is a line or a point. As long as the first extrusion member 311 and the second extrusion member 321 jointly form a chamfer - shaped convex structure through four inclined side walls and the extrusion surface, and the width of the extrusion surface is less than the diameter of the wire (i.e., the diameter of the body section 11 of the needle material 1). Correspondingly, the inward - depressed recessed portion 122 formed on the outer peripheral surface of the wire by extrusion is a wedge - shaped groove; the bottom of this wedge - shaped groove can be a plane, a curved surface, or a pointed line or point. In other embodiments, the width of the extrusion surface of the first extrusion member 311 is less than the diameter of the wire; the second extrusion member 321 is a groove structure (as shown in Figure 5 and Figure 6 ), the width of the groove structure is greater than or equal to the diameter of the wire (i.e., the diameter of the body section 11), as long as the wire can be located in the groove. This groove structure can play a role in guiding and positioning the wire, so that the first extrusion member 311 can be aligned with the middle area of the outer peripheral surface of the wire for extrusion. The extrusion surface of the groove structure ( Figure 5 a plane enclosed by the vertices indicated by a - d in Figure 5 ) is the surface that contacts the outer peripheral surface of the wire to be processed. During the extrusion working process, after the first extrusion member 311 and the second extrusion member 321 move towards each other and extrude the outer peripheral surface of the wire, the one - side pressure - receiving surface of the bulging section 12 of the needle material 1 obtained by extrusion is depressed inward to form a recessed portion 122, and the surface that contacts the extrusion surface of the second extrusion member 321 bulges radially outward along the bulging section to form a bulging portion with an arc - shaped structure (see Figure 7 ).

[0102] The needle cutting mechanism 3 provided in the above embodiment is used, through the first extrusion member 311 and the second extrusion member 321 moving toward each other, the outer peripheral surface of the wire is relatively extruded during the movement, such as Figure 7 and Figure 8 As shown, a bulging section 12 is formed on the wire after being squeezed, and the bulging section 12 includes a bulging portion 121 that bulges outward along the radial direction of the bulging section 12 and is formed by the pressure on the outer peripheral surface, and the bulging portion 121 is an arc-shaped structure, so that the overall outer diameter of the bulging section 12 increases (for example, from 0.4mm to 0.6-0.8mm); and the pressure surfaces on both sides of the bulging section 12 (or the pressure surface on one side) are recessed inward to form a recessed portion 122. The first shearing piece 312 and the second shearing piece 322 move toward each other and move until they collide with each other to cut off the squeezed line segment on the wire to obtain the needle material 1. The needle material 1 can be firmly plugged into the board hole of the PCB board through the bulging section 12 without loosening, bending, breaking, etc., which improves the stability of the plug-in.

[0103] In another embodiment of the present invention, another needle material 1 for plugging into a circuit board is provided. Figure 12 and Figure 13 , taking the three-dimensional coordinate axis system (X, Y, Z) as an example, the needle material 1 of this embodiment is described. Figure 12 and Figure 13 As shown, the needle material 1 includes a main body section 11 and a bulging section 12 in the axial direction (Z direction in the figure), the main body section 11 is a solid structure, and the bulging section 12 includes a bulging portion 121 that is formed by the outer peripheral surface being compressed and bulges outward radially along the bulging section 12; in the radially outward bulging direction, the bulging portion 121 is thick in the middle and thin on both sides. Specifically, the thin-on-both-sides structure is the two sides that bulge outward radially due to compression (the structure is relatively thin); and the thick-on-the-middle structure is the middle part (supporting portion 123) on the outer peripheral surface of the bulging section 12 that is not compressed. Among them, the first thickness direction (X direction in the figure) of the support part 123 is perpendicular to the outward expansion direction (Y direction in the figure) of the bulging part 121, and the second thickness direction (Y direction in the figure) of the support part 123 is parallel to the outward expansion direction of the bulging part 121; the first thickness of the support part 123 is less than the thickness of the bulging part 121 in the outward expansion direction, and is greater than the thickness of the bulging part 121 in the pressure direction (X direction in the figure); the second thickness of the support part 123 is less than the diameter of the body section 11. The above technical solution can increase the outer diameter of the needle material 1 by setting the bulging part 121, thereby achieving a tight fit between the needle material 1 and the hole of the PCB board; by setting the support part 123, the support of the bulging section 12 on the slender body section 11 can be enhanced, and the overall stability after plugging can be improved.

[0104] In this embodiment, the supporting part 123 is the uncompressed part on the outer peripheral surface of the bulging section 12. On the macroscopic scale, the first thickness of the supporting part 123 is equal to the diameter of the body section 11. Of course, during the actual processing, the first thickness of the supporting part 123 may be affected by the extrusion force in its surrounding area. Therefore, on the microscopic scale, the structure of the supporting part 123 may have slight changes, but this does not affect the overall structure of the bulging section 12 in this embodiment.

[0105] Please refer to Figure 12 , in some other embodiments, the bulging part 121 may be an arc-shaped structure that bulges radially outward along the bulging section 12 formed by being pressed on one side surface; a flat part (plane structure) and an uncompressed supporting part 123 are formed on the one-side pressed surface. Please refer to Figure 13 and Figure 14 , in other embodiments, the bulging part 121 may also be an arc-shaped structure that bulges radially outward along the bulging section 12 formed by being pressed on opposite side surfaces; flat parts (plane structures) and uncompressed supporting parts 123 are formed on both of the pressed side surfaces.

[0106] Please refer to Figure 3 , Figure 15 and Figure 16 , in another embodiment, another cutting needle mechanism 3 is provided for shearing and extruding and forming the needle material 1 as described in the above embodiment. Wherein, grooves 34 and extrusion parts 35 are provided at opposite ends of the first extrusion part 311 and the second extrusion part 321; the length direction of the groove 34 ( Figure 15 or Figure 16 the direction in which the groove extends in) is parallel to the axis of the body section 11 of the needle material 1, and the groove 34 separates the extrusion part 35 into a first extrusion part 351 and a second extrusion part 352; the width of the groove 34 is smaller than the diameter of the wire material (i.e., the diameter of the body section 11 of the needle material 1). The first extrusion part 311 and the second extrusion part 321 move towards each other, and the first extrusion part 351 and the second extrusion part 352 extrude the outer peripheral surface of the wire material (both side surfaces are pressed simultaneously). The bulging section 12 of the extruded needle material 1 forms a bulging part 121 (arc-shaped structure) that bulges radially outward along the bulging section 12 formed by being pressed on opposite side surfaces; flat parts (plane structures) are formed on both of the pressed side surfaces. Among them, the area of the outer peripheral surface of the wire material that is aligned with the groove 34 forms an uncompressed supporting part 123 (see Figure 13 and Figure 14 ).

[0107] Please refer to Figure 15, in this embodiment, the extrusion heads of the first extruding member 311 and the second extruding member 321 are both convex structures. The extrusion head includes a groove 34, an extrusion portion 35, and an inclined surface; the groove 34 is arranged along the longitudinal center line of the extrusion head, and divides the extrusion portion 35 into a first extrusion portion 351 and a second extrusion portion 352, and divides the inclined surface into a first inclined surface and a second inclined surface. Please refer to Figure 16 , in this embodiment, the extrusion heads of the first extruding member 311 and the second extruding member 321 are both convex structures. The extrusion head includes a groove 34, an extrusion portion 35, an upper inclined surface and a lower inclined surface; the groove 34 is arranged along the longitudinal center line of the extrusion head, and divides the extrusion portion 35 into a first extrusion portion 351 and a second extrusion portion 352, divides the upper inclined surface into a first upper inclined surface and a second upper inclined surface, and divides the lower inclined surface into a first lower inclined surface and a second lower inclined surface. By adopting Figure 15 or Figure 16 the structure of the extruding member, a more uniform extrusion force can be obtained. After extruding the outer peripheral surface of the wire, the bulging section 12 of the needle material 1 obtained by extrusion can form a bulging portion 121 that bulges out uniformly outward, so as to more uniformly increase the diameter of the bulging portion 121 in the bulging direction.

[0108] In other embodiments, one end of the first extruding member 311 in contact with the outer peripheral surface of the wire is provided with a groove 34 and an extrusion portion 35. The length direction of the groove 34 ( Figure 15 or Figure 16 the direction in which the groove extends in) is parallel to the axis of the body section 11 of the needle material 1, and the groove 34 divides the extrusion portion 35 into a first extrusion portion 351 and a second extrusion portion 352; the width of the groove 34 is smaller than the diameter of the wire (i.e., the diameter of the body section 11 of the needle material 1). The second extruding member 321 is a groove structure (as shown in Figure 5 ), and the width of the groove structure is greater than or equal to the diameter of the wire (i.e., the diameter of the body section 11), as long as the wire can be located in the groove. This groove structure can play a role in guiding and positioning the wire, so that the first extruding member 311 can be aligned with the middle area of the outer peripheral surface of the wire for extrusion. The extrusion surface of the groove structure ( Figure 5 the plane surrounded by the vertices indicated by a-d in) is the surface in contact with the outer peripheral surface of the wire. During the extrusion working process, after the first extruding member 311 and the second extruding member 321 move towards each other and extrude the outer peripheral surface of the wire, the bulging section 12 of the needle material 1 obtained by extrusion forms a bulging portion 121 (arc-shaped structure) that bulges out radially along the bulging section 12 by being pressed on one side; a flat portion (plane structure) is formed on the one-sided pressing surface, wherein the area of the outer peripheral surface of the wire aligned with the groove 34 forms an unsupported portion 123 (see Figure 12 ).

[0109] In the cutting needle mechanism 3 provided in the above embodiments, for a specific example of the second pressing member 321 having a groove structure, please refer to Figure 5 and Figure 6 . As Figure 5 shows, the width of the groove structure is greater than the diameter of the body section 11 of the wire material 1 (i.e., the outer diameter of the wire), so the wire can be located in the groove, playing a role in guiding and positioning the wire. As Figure 6 shows, the width of the groove structure is equal to the outer diameter of the wire, so the wire can just be located in the groove, playing a role in guiding and positioning the wire; and, the groove structure is a semi-circular arc groove structure, and its radius is the same as the radius of the wire. In addition, as Figure 6 shows, a guiding structure is provided at the notch of the groove structure for guiding the wire into the groove. The guiding structure is a V-shaped opening structure extending radially outward at the notch of the groove structure. By setting the V-shaped opening structure, the wire can be accurately guided into the groove, realizing the guiding and positioning of the wire, so as to improve the accuracy of the extrusion and shearing of the wire by the first shearing structure 31 and the second shearing structure 32.

[0110] In some embodiments, please refer to Figure 3 and Figure 9 . The first shearing member 312 of the cutting needle mechanism 3 provided in the above embodiments includes a first cutting head 3121, and the second shearing member 322 includes a second cutting head 3222. During the process of the first shearing member 312 and the second shearing member 322 moving towards each other until they abut against each other, the first cutting head 3121 and the second cutting head 3222 abut against each other, thereby cutting the wire to be processed.

[0111] In some embodiments, please refer to Figure 6 . The surface of the second shearing member 322 in contact with the outer peripheral surface of the wire to be processed is a planar structure 3223, and the first shearing member 312 includes a cutting head 3121; the first shearing member 312 and the second shearing member 322 can move towards each other until they abut against each other, which specifically includes: the first shearing member 312 and the second shearing member 322 can move towards each other until the cutting head 3121 abuts against the planar structure 3223 to cut the wire to be processed.

[0112] Here, it should be noted that in the above embodiments, the specific structures of the first cutting head (cutting head) 3121 and the second cutting head 3222 are not limited, as long as they can cut the wire to be processed. For example, the first cutting head (cutting head) 3121 and the second cutting head 3222 can be a pointed cutting head structure as shown in Figure 3 , Figure 6 and Figure 9 , or can be a sheet-like blade structure, or other variant structures.

[0113] The needle cutting mechanism 3 provided in the above embodiment is used, through the first extrusion member 311 and the second extrusion member 321 moving toward each other, the outer peripheral surface of the wire is relatively extruded during the movement, such as Figures 12 - 14 As shown, a bulging section 12 is formed on the wire after being squeezed, and the bulging section 12 includes a bulging portion 121 that bulges outward radially along the bulging section 12 formed by the pressure on the outer peripheral surface, and the bulging portion 121 is an arc-shaped structure, so that the overall outer diameter of the bulging section 12 increases (for example, from 0.4mm to 0.55-0.65mm); and the pressure surfaces on both sides of the bulging section 12 (or the pressure surface on one side) are formed with a flat portion (planar structure), wherein the area where the outer peripheral surface of the wire is aligned with the groove 34 forms an unpressurized support portion 123. The first shearing piece 312 and the second shearing piece 322 move toward each other and move until they come into contact with each other to cut off the squeezed wire segment on the wire to obtain the needle material 1. The needle material 1 can be firmly plugged into the board hole of the PCB board through the bulging section 12, and will not be loosened, and is not prone to bending, breaking, etc., thereby improving the stability of the plug-in.

[0114] In the above embodiment, if Figure 1 , 2 As shown in , 7, 6 and 12-14, the needle material 1 includes a body section 11, a bulging section 12 and a pin section 13 in the axial direction, and the pin section 13 is a solid structure. Through the pin section 13, in the subsequent soldering process, the tin in the tin furnace can penetrate from the board hole of the bottom of the PCB board along the pin section 13, so as to better achieve the tight fit between the needle material 1 and the board hole of the PCB board; after the soldering is completed, the pin section 13 can be cut flat. Correspondingly, as Figure 3 As shown, the first extrusion piece 311 and the first shearing piece 312 are arranged at intervals on a shearing shaft 33 along the needle insertion direction, and the second extrusion piece 321 and the second shearing piece 322 are arranged at intervals on another shearing shaft 33 along the needle insertion direction. Through the two symmetrically arranged shearing shafts moving toward each other, it is possible to achieve shearing of the previously extruded wire segment to obtain the needle material 1 while extruding the outer peripheral surface of the wire material; by arranging the first extrusion piece 311 and the first shearing piece 312 (the second extrusion piece 321 and the second shearing piece 322) at intervals, a stitch segment 13 can be reserved below the bulging segment 12 of the needle material 1.

[0115] In combination with a specific bending strength test, a wire with an outer diameter of 0.4 mm is taken as an example to illustrate the needle material obtained by processing the wire in the above embodiment.

[0116] Bending standard: bend 90° to the left (forward) and 90° to the right (backward), which is counted as 1 bend.

[0117] Test object: Figure 1 The needle material represented by the two sides being pressed and formed is denoted as needle material A;

[0118] The needle materials formed by pressing on both sides represented by Figure 8 are denoted as needle material B;

[0119] The needle materials formed by pressing on both sides represented by Figure 13 and Figure 14 are denoted as needle material C;

[0120] The diameters of the main body section and the pin section of each needle material: 0.4 mm;

[0121] The bending direction: the direction of pressure, denoted as 90° bending left and right; the direction of bulging outwards, denoted as 90° bending front and back.

[0122] Table 1 Test results table of the bending strength of needle materials

[0123]

[0124] Please refer to Figure 17 , in another embodiment of the present invention, a PCB board 2 is further provided, which includes a circuit board body 21 and the needle material 1 described in any one of the above specific embodiments. A plurality of jacks 22 are provided on the circuit board body 21; the outer diameter of the bulging section 12 of the needle material 1 is larger than the inner diameter of the jack 22; the needle material 1 is inserted into the jack 22 through the bulging section 12.

[0125] Please refer to Figure 18 , in another embodiment of the present invention, a pin inserting device is further provided, which includes a frame 5. A shearing assembly 6, a clamping and pin inserting assembly 8 and a needle pressing assembly 9 are provided on the frame 5; the shearing assembly 6 includes the needle cutting mechanism 3 described in any one of the above specific embodiments, a first transmission mechanism and a power mechanism. The first transmission mechanism drives the first shearing structure 31 and the second shearing structure 32 to move towards each other, and the power mechanism drives the first transmission mechanism; the needle pressing assembly 9 is arranged between the shearing assembly 6 and the clamping and pin inserting assembly 8, and the needle pressing assembly 9 is used to press the top end of the needle material 1 described in any one of the above specific embodiments; the clamping and pin inserting assembly 8 is used to clamp the needle material 1 and perform up and down pin insertion.

[0126] Regarding the first transmission mechanism, please refer to Figure 19, the first transmission mechanism includes a rotating main shaft 47, a cam assembly, and a swing rod assembly. The cam assembly is sleeved on the rotating main shaft 47. The swing rod assembly includes a first swing rod 61 and a second swing rod 62. The cam assembly includes a first needle-cutting cam 471 and a second needle-cutting cam 472. One end of the first swing rod 61 is provided with a first swing rod wheel 611, and one end of the second swing rod 62 is provided with a second swing rod wheel 621. The protruding part of the first needle-cutting cam 471 forms a rotational contact with the first swing rod wheel 611, and the protruding part of the second needle-cutting cam 472 forms a rotational contact with the second swing rod wheel 621. The other end of the first swing rod 61 is provided with a third swing rod wheel 612, and the other end of the second swing rod 62 is provided with a fourth swing rod wheel 622. The third swing rod wheel 612 is movably matched with the end of the first shearing structure 31, and the fourth swing rod wheel 622 forms a movable match with the end of the second shearing structure 32. In this embodiment, the transmission methods between the first swing rod 61 and the first shearing structure 31, and between the second swing rod 62 and the second shearing structure 32 are not limited to the above methods. For example, sliding blocks can be respectively arranged on the ends of the first shearing structure 31 and the second shearing structure 32. Grooves are formed on the sliding blocks. The other ends of the first swing rod 61 and the second swing rod 62 can respectively cooperate with the grooves on the corresponding side of the sliding blocks to drive the sliding blocks to slide reciprocally, so as to drive the first shearing structure 31 and the second shearing structure 32 to move towards each other respectively.

[0127] The working principle of the shearing assembly 6 is as follows: The driving motor 462 drives the rotating main shaft 47 to rotate. The rotating main shaft 47 drives the first needle-cutting cam 471 and the second needle-cutting cam 472 to rotate simultaneously. The protruding part of the first needle-cutting cam 471 drives the first swing rod wheel 611 to rotate, thereby driving the first swing rod 61 to swing. The first swing rod 61 presses the end of the first shearing structure 31 through the third swing rod wheel 612 to drive the first shearing structure 31 to move left and right; the protruding part of the second needle-cutting cam 472 drives the second swing rod wheel 621 to rotate, thereby driving the second swing rod 62 to swing. The second swing rod 62 presses the end of the second shearing structure 32 through the fourth swing rod wheel 622 to drive the second shearing structure 32 to move left and right, so as to realize the relative movement of the first shearing structure 31 and the second shearing structure 32 to extrude and shear the wire to obtain the needle material 1.

[0128] Regarding the clamping and inserting needle assembly 8, the clamping and inserting needle assembly 8 includes a clamping mechanism, a second transmission mechanism for driving the clamping mechanism to clamp, open, and move the needle up and down, and a power mechanism for driving the second transmission mechanism. Please refer to Figures 20 - 22, the clamping mechanism includes a first jaw 81 and a second jaw 82 that are drivingly cooperated with each other. On the mutually clamping and fitting surfaces of the first jaw 81 and the second jaw 82, a first clamping groove 811 and a second clamping groove 821 are respectively provided. The first clamping groove 811 and the second clamping groove 821 cooperate to form a clamping channel. The inner diameter of the clamping channel is adapted to the outer diameter of the body section 11 of the needle material 1 to clamp the needle material to be inserted. Here, it should be noted that the term "adapted in size" means that the inner diameter of the clamping channel can be equal to or less than the outer diameter of the needle material to be inserted, and there is no specific limitation as long as the needle material to be inserted can be clamped. A first guiding portion is provided on the first jaw 81, and a second guiding portion is provided on the second jaw 82. The first guiding portion and the second guiding portion cooperate with each other to guide the needle material 1 into the first clamping groove 811 and / or the second clamping groove 821. In this embodiment, the length of the clamping channel formed by the cooperation of the first clamping groove 811 and the second clamping groove 821 is at least greater than 1 / 2 of the length of the needle material to be inserted. Since the length of the clamping channel is at least greater than 1 / 2 of the length of the needle material to be inserted, preferably, the length of the clamping channel is the same as the length of the body section of the needle material, so that most of the needle body of the needle material can be clamped. Of course, the length of the body section of the needle material can be slightly longer than the length of the clamping channel to facilitate the pressing needle assembly to press against the top end of the needle material during the insertion process. When the pressing needle assembly 9 presses against the top end of the needle material 1, the pressing force can be transmitted to the bulging section 12 of the needle material 1 through the clamping channel, so that the needle material 1 is firmly inserted into the board hole of the PCB through the bulging section 12, which well solves the problems of easy loosening and inability to stably insert the fine metal needle material (especially the soft metal needle material) and the board hole of the PCB in the prior art.

[0129] Regarding the first guiding portion and the second guiding portion, please refer to Figure 21 and Figure 22, the first guiding portion includes a plurality of symmetrically arranged first teeth 812 and second teeth 813, and the second guiding portion includes a plurality of symmetrically arranged third teeth 822 and fourth teeth 823. Here, it should be noted that the term "a plurality of" means a quantity of more than two. The first guiding portion includes more than two symmetrically arranged first teeth 812 and more than two second teeth 813, and the second guiding portion includes more than two symmetrically arranged third teeth 822 and more than two fourth teeth 823. The first teeth 812 are arranged at intervals along one side of the notch of the first clamping groove 811, and the second teeth 813 are arranged at intervals along the other side of the notch of the first clamping groove 811. The symmetrically arranged first teeth 812 and second teeth 813 cooperate with each other to form a first V-shaped opening structure; the third teeth 822 are arranged at intervals along one side of the notch of the second clamping groove 821, and the fourth teeth 823 are arranged at intervals along the other side of the notch of the second clamping groove 821. The symmetrically arranged third teeth 822 and fourth teeth 823 cooperate with each other to form a second V-shaped opening structure. The first V-shaped opening structure and the second V-shaped opening structure are arranged in an interleaved manner and are movably meshed with each other. During the meshing process, the first guiding portion with the V-shaped opening structure and the second guiding portion with the V-shaped opening structure can smoothly guide the wire into the first clamping groove 811 and the second clamping groove 821, and then clamp the wire in the clamping channel, and at the same time play a role in correcting the wire body, so that the wire body will not be deflected or distorted. After the shearing assembly 6 extrudes and shears the wire to obtain the needle material 1, the needle pressing assembly 9 presses against the top end of the needle material 1, and this pressing force can be transmitted to the bulging section 12 of the needle material 1 through the clamping channel, so that the needle material 1 is firmly inserted into the board hole of the PCB board through the bulging section 12, without loosening, and is not prone to bending, breaking and other phenomena, improving the stability of the insertion.

[0130] The working principle of the clamping and inserting pin assembly 8 is as follows: When inserting a wire (especially a soft metal pin), through the first guiding part with a V-shaped opening structure formed by a number of first teeth 812 and second teeth 813, and the second guiding part with a V-shaped opening structure formed by a number of third teeth 822 and fourth teeth 823, the wire is guided into the slender clamping channel formed by the cooperation of the first clamping groove 811 and the second clamping groove 821. Since the first guiding part and the second guiding part are V-shaped opening structures, when the wire (especially a soft metal pin) hangs naturally along the inserting pin direction, it must be located within the area enclosed by the first guiding part and the second guiding part. Then, after the wire is guided into the slender clamping channel, the first clamping jaw 81 and the second clamping jaw 82 after meshing can clamp the wire body (or the body section 11 of the pin 1). After the shearing component 6 extrudes and shears the wire to obtain the pin 1, the pin pressing component 9 presses against the top end of the sheared pin 1, and cooperates with the clamping and inserting pin assembly 8 to smoothly insert the pin 1 (especially a soft metal pin) into the board hole of the PCB board.

[0131] Regarding the second transmission mechanism, please refer to Figure 18 、 Figure 20 and Figures 23 - 25 ,The second transmission mechanism includes a clamping transmission mechanism and an inserting pin transmission mechanism. Among them, please refer to Figure 18 、 Figure 20 and Figure 23 ,The clamping transmission mechanism includes a rotating main shaft 47, a pin clamping cam 473 and a first swing arm assembly. The pin clamping cam 473 is sleeved on the rotating main shaft 47. The first swing arm assembly includes a pin clamping swing arm seat 83 and a pin clamping module 85. A pin clamping swing arm 84 is provided on the pin clamping swing arm seat 83; one end of the pin clamping swing arm 84 is provided with a pin clamping swing arm wheel 841, and the pin clamping swing arm wheel 841 forms a rotational contact with the protruding part of the pin clamping cam 473; the other end of the pin clamping swing arm 84 is provided with a pin clamping swing arm branch 842, and the pin clamping swing arm branch 842 is arranged in the sliding groove of the pin clamping swing arm seat 83 and can slide relatively along the sliding groove. The first clamping jaw 81 and the second clamping jaw 82 are arranged at the bottom of the pin clamping module 85; a lever swing arm 851 and a swing sub-arm 852 that cooperates with the lever swing arm 851 are provided in the pin clamping module 85. One end of the lever swing arm 851 forms a sliding fit with the pin clamping swing arm branch 842, and the other end of the lever swing arm 851 forms a sliding fit with the second clamping jaw 82; one end of the swing sub-arm 852 forms a sliding fit with the first clamping jaw 81. As Figure 26 shown, a number of first transmission teeth 8511 are provided on the lever swing arm 851, and a number of second transmission teeth 8521 are provided on the swing sub-arm 852. The first transmission teeth 8511 are meshed with the second transmission teeth 8521 to realize the linkage between the lever swing arm 851 and the swing sub-arm 852, and further realize the synchronous opening or synchronous closing of the first clamping jaw 81 and the second clamping jaw 82. The structure is concise and the transmission efficiency is high. AsFigure 20 As shown, a second slider 824 is provided on the second jaw 82, and a groove is formed on the second slider 824. One end of the lever swing arm 851 facing the second jaw 82 cooperates with the groove on the second slider 824 to drive the second slider 824 to slide horizontally back and forth, thereby driving the second jaw 82 to move horizontally back and forth; a first slider 814 is provided on the first jaw 81, and a groove is formed on the first slider 814. One end of the swing sub-arm 852 facing the first jaw 81 cooperates with the groove on the first slider 814 to drive the first slider 814 to slide back and forth, thereby driving the first jaw 81 to move horizontally back and forth, so as to realize the opening and closing of the first jaw 81 and the second jaw 82. In addition, a return spring (not shown) is provided on the lever swing arm 851. One end of the return spring is connected to the lever swing arm 851, and the other end is connected to the needle clamping module 85. By providing the return spring, automatic reset of the lever swing arm 851 can be realized, so that the first jaw 81 and the second jaw 82 are in a state of closing and clamping the needle material 1, preventing the needle material 1 from falling. Among them, please refer to Figure 18 、 Figure 20 、 Figure 24 and Figure 25 , the second transmission mechanism includes a rotating main shaft 47, a needle inserting cam 474 and a second swing arm assembly. The needle inserting cam 474 is sleeved on the rotating main shaft 47. The second swing arm assembly includes a needle inserting swing arm 86 and a swing arm connecting rod 87. One end of the needle inserting swing arm 86 is provided with a needle inserting swing arm wheel 861, and an annular curve track is provided on the needle inserting cam 474. The needle inserting swing arm wheel 861 is in rotational contact with the needle inserting cam 474. As the needle inserting cam 474 rotates, the annular curve track alternately contacts the needle inserting cam 474 with a curved surface that is either high or low, so that the needle inserting cam 474 moves up and down along the needle inserting direction ( Figure 25 the vertical direction in

[0132] ), driving the needle inserting swing arm 86 to swing up and down correspondingly, and then driving the swing arm connecting rod 87 to move up and down, and driving the needle clamping module 85 to move up and down; through the up and down movement of the needle clamping module 85, the first jaw 81 and the second jaw 82 provided at the bottom of the needle clamping module 85 are driven to move up or down.The working principle of the clamping and inserting pin assembly 8 is as follows: The driving motor 462 drives the rotating main shaft 47 to rotate, and the rotating main shaft 47 drives the pin clamping cam 473 and the pin inserting cam 474 to rotate. The protruding part of the pin clamping cam 473 drives the pin clamping swing arm wheel 841 to rotate, thereby driving the pin clamping swing arm 84 to swing. The pin clamping swing arm 84 drives the pin clamping swing arm branch 842 to slide relatively along the chute, and then drives the lever swing arm 851 to swing. At the same time, through the engagement of the first transmission gear 8511 and the second transmission gear 8521, the linkage between the swing sub-arm 852 and the lever swing arm 851 is realized, and then the synchronous opening or synchronous closing of the first clamping jaw 81 and the second clamping jaw 82 is realized to clamp / release the needle material 1. The annular curve track of the pin inserting cam 474 drives the pin inserting swing arm wheel 861 to rotate, thereby driving the pin inserting swing arm 86 to swing up and down. Through the swing of the pin inserting swing arm 86, the swing link 87 is driven to move up and down, and then the pin clamping module 85 is driven to move up and down; through the up and down movement of the pin clamping module 85, the first clamping jaw 81 and the second clamping jaw 82 arranged at the bottom of the pin clamping module 85 are driven to move up or down, so as to insert the clamped needle material 1 into the board hole of the PCB board, and continue to move up / down to repeat the clamping and pin inserting actions.

[0133] Regarding the needle pressing assembly 9, please refer to Figure 27 , the needle pressing assembly 9 includes a chute seat 91, a swing rod seat 92, a needle pressing swing rod 93, a needle pressing swing rod wheel 931 and a linear cam 932. The chute seat 91 is arranged in front of the pin clamping module 85. The swing rod seat 92 is slidably connected to the chute seat 91. The swing rod seat 92 is connected to the needle pressing swing rod 93 by a hinge. One side of the needle pressing swing rod 93 is provided with a needle pressing swing rod wheel 931, and a linear cam 94 is arranged at the rear of the needle pressing swing rod wheel 931. When the swing rod seat 92 slides up and down, the swing rod seat 92 drives the needle pressing swing rod 93 to move up and down. At this time, the needle pressing swing rod wheel 931 can move along the surface of the linear cam 94 on the linear cam 94 to perform a curve movement, and the needle pressing swing rod 93 is realized to swing correspondingly following the track of the linear cam 94. When the needle pressing swing rod 93 swings to the top of the needle material 1, the needle pressing swing rod 93 can press against the top of the needle material 1 to block the reaction force generated when the needle material 1 is inserted into the board hole of the PCB board, prevent the needle material 1 from retreating upward, and thus cooperate with the pin clamping module 85 to continue to move down to insert the needle material 1 into the board hole of the PCB board to complete the needle inserting process.

[0134] Regarding the power mechanism, please refer to Figure 18 , the power mechanism is the driving motor 462. The driving motor 462 is arranged at the upper end of the rotating main shaft 47 and drives the rotating main shaft 47 to rotate.

[0135] In other embodiments, please refer to Figure 28 , the pin inserting device further includes a needle guiding assembly 7. The needle guiding assembly 7 includes an upper needle guiding block 71 and / or a lower needle guiding block 72.

[0136] Here, it should be noted that in the embodiments of the present invention, the term "and / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0137] Regarding the upper guide pin block 71, please refer to Figure 28 and Figure 29 , both ends of the upper guide pin block 71 are respectively sleeved above the first shearing structure 31 and the second shearing structure 32. The upper guide pin block 71 is provided with a perforation 711 perpendicular to the length direction of the upper guide pin block 71 ( Figure 28 the direction indicated by the arrow X in the figure). When the first shearing member 312 and the second shearing member 322 are in contact with each other, the center point of the perforation 711 is aligned with the contact point of the first shearing member 312 and the second shearing member 322. After the wire to be processed passes through the perforation 711 of the upper guide pin block 71, it can be accurately positioned between the first shearing structure 31 and the second shearing structure 32, so as to improve the accuracy of the extrusion and shearing of the wire by the first shearing structure 31 and the second shearing structure 32.

[0138] Regarding the lower guide pin block 72, please refer to Figure 28 and Figure 30 , the lower guide pin block 72 is inserted into the gap between the second extrusion member 321 and the second shearing member 322. One end of the lower guide pin block 72 facing the wire (the wire to be processed) is provided with a guide pin groove 721 with a circular arc cross-section, and the guide pin groove 721 is adapted to the outer diameter of the wire (i.e., the body section 11); when the first shearing member 312 and the second shearing member 322 are in contact with each other, the center point of the guide pin groove 721 is aligned with the contact point of the first shearing member and the second shearing member. As Figure 28 and Figure 30 shown, the end of the lower guide pin block 72 away from the wire is provided with a stepped structure 723, and correspondingly, the bottom of the second extrusion member 321 is provided with a groove structure adapted to the stepped structure. Through the engagement of the stepped structure 723 and the groove structure, the lower guide pin block 72 can be inserted into the gap between the second extrusion member 321 and the second shearing member 322. In some embodiments, the lower guide pin block 72 can also be integrally formed with the second extrusion member 321 and the second shearing member 322 on the same shearing shaft. For example, as Figure 6 shown, the lower guide pin block 72 is arranged between the second extrusion member 321 and the second shearing member 322, and the lower guide pin block 72 is integrally formed with the second extrusion member 321 and the second shearing member 322 on the same shearing shaft.

[0139] As Figure 30As shown, a third guide portion 722 is provided at the notch of the guide slot 721 of the lower guide needle block 72, which is used to guide the wire to be processed into the guide slot 721. The third guide portion 722 is a V-shaped opening structure formed by extending radially outward from the notch of the guide slot. By providing the V-shaped opening structure, the wire to be processed can be accurately guided into the guide slot 721, and the wire can be corrected to improve the accuracy of the first shearing structure 31 and the second shearing structure 32 in squeezing and shearing the wire. Figure 28 As shown, when the first shear structure 31 and the second shear structure 32 move toward each other until the first shear piece 312 and the second shear piece 322 collide with each other, the third guide portion 722 of the lower guide needle block 72 is inserted into the gap between the first extrusion piece 311 and the first shear piece 312 .

[0140] See also Figure 18, the pin inserting device further includes a machine body. Support seats 4 are respectively arranged on both sides of the machine body. An upper cross beam plate 41 is arranged on the upper part of the support seat 4, and a steel wire straightening mechanism 44 is installed in the middle section of the upper cross beam plate 41; a front cross beam plate 42 is arranged at the front of the machine body, and a wire feeding mechanism 43 is fixed on the front side of the front cross beam plate 42; the lower part of the upper cross beam plate 41 is connected to an upper pressing plate 45 through an adjusting bolt. Both sides of the upper pressing plate 45 are connected to pressing plate support arms. A motor seat 466 is arranged on the upper part of the upper pressing plate 45, a speed reducer 461 is arranged on the motor seat 466, and a driving motor 462 is connected to the upper part of the speed reducer 461. The motor seat 466 passes through the upper cross beam plate 41 through a seat hole, and the seat hole is arranged at the middle position of the upper cross beam plate 41. A pin inserting swing arm seat is arranged at the bottom of the upper pressing plate 45, and the pin inserting swing arm seat is connected to a pin inserting swing arm 86 through a hinge. The lower part of the speed reducer 461 is connected to a rotating main shaft 47, and the rotating main shaft 47 passes through the upper pressing plate 45 through a connection hole. The connection hole is arranged at the middle position of the upper pressing plate 45. A pin inserting cam 474 is arranged on the upper part of the rotating main shaft 47, a needle clamping cam 473 is arranged in the middle of the rotating main shaft 47, and a first needle cutting cam 471 and a second needle cutting cam 472 are arranged at the lower part of the rotating main shaft 47. One side of the upper pressing plate 45 is connected to a frame 5. A wire feeding motor 51 is arranged in front of the frame 5. A wire feeding module 52 is arranged on the frame 5 at the lower position of the wire feeding motor 51. A driving wire feeding wheel 521 is installed in the wire feeding module 52. The tail of the driving wire feeding wheel 521 is connected to the wire feeding motor 51 through a synchronous belt pulley. A wire pressing wheel 522 is arranged beside the driving wire feeding wheel 521. The wire pressing wheel 522 is fixed on a wire pressing movable part 523. An adjustable spring pressing seat 524 is installed outside the wire feeding module 52. A wire pressing spring is installed in the spring pressing seat 524, and the wire pressing spring is connected to the outside of the wire pressing movable part 523. Synchronously rotating gears are respectively installed at the rear parts of the driving wire feeding wheel 521 and the wire pressing wheel 522. A needle clamping module 85 and a wire guiding assembly 53 are arranged in the middle of the frame 5. The wire guiding assembly 53 is located above the needle cutting mechanism 3 and is used for receiving the wire sent by the wire feeding module and guiding the wire into the needle cutting mechanism 3. The bottom of the frame 5 is connected to the needle cutting mechanism 3. A needle cutting base 63 is arranged at the bottom of the needle cutting mechanism 3. A first shearing structure 31 and a second shearing structure 32 are arranged on the needle cutting base 63; tension springs are arranged between the first shearing structure 31 and the needle cutting base 63 and between the second shearing structure 32 and the needle cutting base 63, so that the first shearing structure 31 and the second shearing structure 32 can automatically reset after moving towards each other. Among them, the driving motor 462 is connected to the speed reducer 461. The driving motor 462 plays a role in power driving. The speed reducer 461 is mainly used to reduce the rotation speed of the rotating main shaft 47. The driving motor 462 and the speed reducer 461 are fixed through the motor seat 46.The drive motor 462 drives the rotating main shaft 47 to rotate through the speed reducer 461. The rotating main shaft 47 drives the needle clamping cam 473, the needle inserting cam 474, the first needle cutting cam 471 and the second needle cutting cam 472 to rotate, so as to drive the clamping and inserting needle assembly 8 to perform clamping and up / down inserting needle actions respectively, and drive the shearing assembly 6 to perform extrusion and shearing actions. The motor base 46 is connected to the upper pressure plate 45, and the upper pressure plate 45, the frame 5 and the needle cutting base 63 form a concave structure; the upper cross beam plate 41 is used to adjust the height of the main machine head.

[0141] The working principle of the pin inserting device of the present invention is as follows: First, the wire feeding module of the pin inserting device feeds a wire of a certain length into the wire guiding assembly 53. Then, the wire passes through the through hole 711 of the upper needle guiding block 71 and is accurately positioned between the first shearing structure 31 and the second shearing structure 32. The driving motor 462 drives the rotating main shaft 47 to rotate, and the rotating main shaft 47 drives the clamping needle cam 473, the pin inserting cam 474, the first needle cutting cam 471, and the second needle cutting cam 472 to rotate. Among them, the protruding part of the clamping needle cam 473 drives the clamping needle swing arm wheel 841 to rotate, thereby driving the clamping needle swing arm 84 to swing. The clamping needle swing arm 84 drives the clamping needle swing arm branch 842 to slide relatively along the sliding groove, and then drives the lever swing arm 851 to swing. At the same time, through the meshing of the first transmission tooth 8511 and the second transmission tooth 8521, the linkage between the swing sub-arm 852 and the lever swing arm 851 is realized, and then the synchronous opening or synchronous closing of the first clamping jaw 81 and the second clamping jaw 82 is realized to clamp / release the wire (or the needle material 1 obtained by extrusion molding and shearing). The protruding part of the first needle cutting cam 471 drives the first swing rod wheel 611 to rotate, thereby driving the first swing rod 61 to swing. The first swing rod 61 squeezes the end of the first shearing structure 31 through the third swing rod wheel 612, driving the first shearing structure 31 to move left and right; the protruding part of the second needle cutting cam 472 drives the second swing rod wheel 621 to rotate, thereby driving the second swing rod 62 to swing. The second swing rod 62 squeezes the end of the second shearing structure 32 through the fourth swing rod wheel 622, driving the second shearing structure 32 to move left and right, so as to realize the relative movement of the first shearing structure 31 and the second shearing structure 32 to extrude and shear the wire to obtain the needle material 1. Here, it should be noted that when the wire is first extruded and sheared, the end of the wire is located between the first shearing member 312 and the second shearing member 322; after the first extrusion of the wire, the wire is sent between the first clamping jaw 81 and the second clamping jaw 82. At this time, during the meshing of the first clamping jaw 81 and the second clamping jaw 82, the wire is guided into the slender clamping channel formed by the cooperation of the first clamping groove 811 and the second clamping groove 821 through the trumpet-shaped first guiding part and the second guiding part to clamp the wire (i.e., the body section 11 of the needle material 1) and ensure that the wire is in the middle of the first shearing structure 31 and the second shearing structure 32; then, the relative movement of the first shearing structure 31 and the second shearing structure 32 is carried out to extrude the latter section of the wire segment and shear to obtain the needle material 1 formed by the first extrusion molding, and the middle part of the outer peripheral surface of the wire can be aligned for extrusion and / or shearing. After extrusion, a bulging part 121 that bulges out evenly outward can be formed on the bulging section 12 of the needle material 1, so as to more evenly increase the diameter of the bulging part 121 in the bulging direction. Such extrusion, shearing, and clamping actions are repeated.The annular curve track of the pin-inserting cam 474 drives the rotation of the pin-inserting swing arm wheel 861, thereby driving the rotation of the pin-inserting swing arm 86. The swing of the pin-inserting swing arm 86 drives the swing arm connecting rod 87 to move up and down, and then drives the pin-clamping module 85 to move up and down. Through the up and down movement of the pin-clamping module 85, the first clamping jaw 81 and the second clamping jaw 82 arranged at the bottom of the pin-clamping module 85 are driven to move up or down, so as to insert the clamped needle material 1 into the board hole of the PCB board, and continue to move up / down to repeat the clamping and pin-inserting actions. During the downward movement of the pin-clamping module 85, the needle-pressing swing rod wheel 931 moves along the surface of the linear cam 94 in a curve on the linear cam 94, and the needle-pressing swing rod 93 swings accordingly following the track of the linear cam 94. When the needle-pressing swing rod 93 swings to the top of the needle material 1, the needle-pressing swing rod 93 presses against the top of the needle material 1, and is transmitted to the bulging section 12 of the needle material 1 through the clamping channel formed by the first clamping jaw 81 and the second clamping jaw 82, blocking the reaction force generated when the needle material 1 is inserted into the board hole of the PCB board, preventing the needle material 1 from retreating upward, and thus cooperating with the downward movement of the pin-clamping module 85 to firmly insert the needle material 1 into the board hole of the PCB board through the bulging section 12, completing the pin-inserting process.

[0142] It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have substantial technical significance. For example, for clarity, the sizes of some components can be increased relative to other components. In addition, repeated reference numerals are used among the drawings to indicate corresponding or similar components. Any modification of the structure, change in the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention.

[0143] In the description of the present application, for orientation terms, if there are terms such as "center", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., the orientation and position relationships indicated are based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present invention.

[0144] In addition to the above, it should also be noted that the "one embodiment", "another embodiment", "other embodiments", etc. mentioned in this specification refer to the specific features, structures or characteristics described in connection with that embodiment being included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in connection with any one embodiment, it is intended that the implementation of such feature, structure or characteristic in combination with other embodiments also falls within the scope of the present invention.

[0145] Finally, it should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection of the present invention. Therefore, based on the innovative concept of the present invention, any changes and modifications made to the embodiments described herein, or equivalent structural or equivalent process transformations made using the content of the specification and drawings of the present invention, and the direct or indirect application of the above technical solutions to other related technical fields are all included in the scope of protection of the present invention.

Claims

1. A cutting needle mechanism, characterized in that, The needle cutting mechanism comprises a first shearing structure and a second shearing structure which are arranged opposite to each other; The first shearing structure comprises a first extrusion piece and a first shearing piece, and the first extrusion piece and the first shearing piece are arranged along the pin insertion direction; The second shearing structure comprises a second extrusion piece matched with the first extrusion piece, and a second shearing piece matched with the first shearing piece, and the second extrusion piece and the second shearing piece are arranged along the pin insertion direction; The first extrusion member and the second extrusion member are capable of moving toward each other, and a working gap between the first extrusion member and the second extrusion member during extrusion is smaller than a diameter of the wire to be processed; The first shearing member and the second shearing member can move toward each other until they come into conflict with each other, so as to cut the wire material to be processed.

2. The cutting needle mechanism according to claim 1, characterized in that, The widths of the extrusion surfaces of the first extrusion piece and the second extrusion piece are both smaller than the diameter of the wire to be processed; The extrusion surface is a surface in contact with the outer peripheral surface of the wire to be processed.

3. The cutting needle mechanism according to claim 2, characterized in that, The first extrusion piece and the second extrusion piece are both convex structures, and the convex structures include the extrusion surface and four inclined side walls.

4. The cutting needle mechanism according to claim 2, characterized in that, The first extrusion piece and the second extrusion piece are both convex structures, the extrusion surface is a square surface, a curved surface or a pointed portion, and the pointed portion is a line or a point.

5. The cutting needle mechanism according to claim 1, characterized in that, The first extrusion piece and the second extrusion piece are both provided with a groove and an extrusion portion at opposite ends; The length direction of the groove is parallel to the axis of the wire to be processed, and the groove separates the extrusion part into a first extrusion part and a second extrusion part; The width of the groove is smaller than the diameter of the wire to be processed.

6. The cutting needle mechanism according to claim 1, characterized in that, The second extrusion member is a groove structure; The width of the groove structure is greater than or equal to the diameter of the wire to be processed; The extrusion surface of the groove structure is a curved surface, and the extrusion surface is a surface in contact with the outer peripheral surface of the wire to be processed.

7. The cutting needle mechanism according to claim 1, characterized in that, The surface of the second shearing piece in contact with the outer peripheral surface of the wire to be processed is a plane structure, and the first shearing piece includes a cutting head; "The first shearing piece and the second shearing piece can move toward each other until they collide with each other to cut the wire to be processed" specifically includes: the first shearing piece and the second shearing piece can move toward each other until the cutting head conflicts with the planar structure to cut the wire to be processed.

8. The cutting needle mechanism according to claim 1, characterized in that, The first extrusion piece and the first shearing piece are arranged at intervals along the pin insertion direction, and the second extrusion piece and the second shearing piece are arranged at intervals along the pin insertion direction.

9. An inserting needle device, characterized in that, It comprises a frame, on which a shearing assembly, a clamping pin assembly and a pressing pin assembly are arranged; The shearing assembly comprises the needle cutting mechanism according to any one of claims 1 to 8, a first transmission mechanism and a power mechanism, wherein the first transmission mechanism drives the first shearing structure and the second shearing structure to move toward each other, and the power mechanism drives the first transmission mechanism; The pressing needle assembly is arranged between the shearing assembly and the clamping needle assembly, and the pressing needle assembly is used to press the top end of the needle material; The clamping needle assembly is used to clamp the needle material and move the needle up and down; The needle material is obtained by extruding and shearing the wire material to be processed by the needle cutting mechanism.

10. The inserting needle device according to claim 9, characterized in that, Also included is a guide needle assembly; The guide pin assembly includes an upper guide pin block and / or a lower guide pin block; Both ends of the upper guide pin block are respectively sleeved above the first shearing structure and the second shearing structure, and the upper guide pin block is provided with a perforation perpendicular to the length direction of the upper guide pin block; When the first shearing member and the second shearing member are in contact with each other, the center point of the perforation is aligned with the contact point of the first shearing member and the second shearing member; and / or The lower guide pin block is inserted into the gap between the second pressing member and the second shearing member. One end of the lower guide pin block facing the wire to be processed is provided with a guide pin groove with a circular arc cross-section, and the guide pin groove is adapted to the diameter of the wire to be processed; When the first shearing member and the second shearing member are in contact with each other, the center point of the guide pin groove is aligned with the contact point of the first shearing member and the second shearing member.

11. The inserting needle device according to claim 10, characterized in that,A guiding portion is provided at the notch of the guide pin groove for guiding the wire to be processed into the guide pin groove.

12. The pin insertion device according to claim 11, characterized in that, The guiding portion is a V-shaped opening structure extending radially outward from the notch of the guide pin groove.

13. The pin insertion device according to claim 9, characterized in that, The first transmission mechanism includes a rotating main shaft, a cam assembly and a swing rod assembly, and the cam assembly is sleeved on the rotating main shaft; The swing rod assembly includes a first swing rod and a second swing rod, and the cam assembly includes a first cam and a second cam; One end of the first swing rod is provided with a first swing rod wheel, one end of the second swing rod is provided with a second swing rod wheel, the protruding portion of the first cam forms a rotational contact with the first swing rod wheel, and the protruding portion of the second cam forms a rotational contact with the second swing rod wheel; The other end of the first swing rod is provided with a third swing rod wheel, one end of the second swing rod is provided with a fourth swing rod wheel, the third swing rod wheel is movably matched with the end of the first shearing structure, and the fourth swing rod wheel forms a movable match with the end of the second shearing structure.

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