Ear stud needle threading forming device

Abstract

The utility model discloses an ear stud needle threading forming device which comprises a rack, the rack is provided with a containing frame used for containing metal wires, the rack is provided with a straightening mechanism capable of straightening the metal wires, the rack is provided with a wire feeding mechanism capable of directionally conveying the metal wires, and the rack is provided with a clamping mechanism capable of clamping and loosening the ends of the metal wires conveyed by the wire feeding mechanism. And the rack is provided with a cutting and forming mechanism which can cut off the metal wire of which the end part is clamped by the clamping mechanism and grind and form the cut metal wire clamped by the clamping mechanism. And the wire feeding mechanism directionally conveys the metal wires on the placing rack. And the metal wires are straightened by the straightening mechanism when being conveyed. And the clamping mechanism is used for clamping the end part of the metal wire which is conveyed by the wire feeding mechanism and straightened by the straightening mechanism. The cutting forming mechanism cuts off part of the metal wire needing to be machined into the auricular needle from the metal wire, the part of the metal wire is continuously clamped by the clamping mechanism, and the cutting forming mechanism machines the part of the metal wire clamped by the clamping mechanism into the auricular needle in a preset shape through grinding.

Description

Technical Field

[0001] The utility model relates to the technical field of earring processing devices, and particularly relates to an ear stud needle threading and forming device. Background Art

[0002] Among the numerous ornaments worn by people, an ear stud is made of a needle and a decoration mounted on the needle. The needle passes through the ear hole of the earlobe to hang the ear stud on the ear. The ear stud needle is simply referred to as an ear needle. A Chinese invention patent with the patent number CN106141046B discloses an ear needle forming machine. Among them, the side surface of the forming upper die contacts the end surface of the cutting clamp block to cut the gold wire. The inventor found that in order to facilitate the ear needle to pass through the earlobe, the piercing end of the ear needle can be designed to be a tip. After the ear stud is made by connecting a metal decoration to the end of the ear needle relative to the piercing end through a spot welder, it is difficult to clamp the ear stud, so it is difficult to process the tip. If the metal wire is cut and then ground one by one, due to the small size of the ear needle, it is time-consuming and laborious during production. The ear needle can also be processed with a groove provided along the circumferential direction of the ear needle for mounting the decoration. Therefore, the ear needle can be set in a preset shape with a tip or a groove or both a tip and a groove. There is an urgent need for an ear stud needle threading and forming device that can mass-produce ear needles with a preset shape. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an ear stud needle threading and forming device that can mass-produce ear needles with a preset shape.

[0004] To solve the above technical problem, the utility model includes a frame. The frame is provided with a placement rack for holding the metal wire, a straightening mechanism for straightening the metal wire, a wire feeding mechanism for directionally conveying the metal wire, a clamping mechanism for clamping and releasing the end of the metal wire conveyed by the wire feeding mechanism, and a cutting and forming mechanism for cutting the end of the metal wire clamped by the clamping mechanism and grinding and forming the cut metal wire clamped by the clamping mechanism.

[0005] After adopting the above structure, the wire feeding mechanism directionally conveys the metal wire on the placement rack towards the clamping mechanism. When a single metal wire is conveyed, it is straightened by the straightening mechanism to ensure the straightness of the metal wire. The clamping mechanism clamps the end of the metal wire conveyed by the wire feeding mechanism and straightened by the straightening mechanism. The cutting and forming mechanism first cuts off the part of the metal wire that needs to be processed into an ear needle from the metal wire clamped at the end by the clamping mechanism. This part of the metal wire is continuously clamped by the clamping mechanism. The cutting and forming mechanism processes the part of the metal wire clamped by the clamping mechanism into an ear needle with a preset shape by grinding. After repeated operations, mass production of ear needles with a preset shape is achieved.

[0006] Further, the wire feeding mechanism includes a first jaw provided on the frame for clamping and releasing the wire. The frame is provided with a second jaw that can approach the first jaw and move away from the clamping mechanism, and move away from the first jaw and approach the clamping mechanism. The second jaw can clamp and release the wire. By providing the first jaw and the second jaw, when the second jaw releases the wire, approaches the first jaw and moves away from the clamping mechanism, the first jaw clamps the wire to prevent the wire from retracting. Then the second jaw clamps the wire and the first jaw releases the wire. The second jaw holds the wire and moves away from the first jaw and approaches the clamping mechanism, thereby realizing the directional feeding of the wire.

[0007] Further, the cutting and forming mechanism includes a sliding frame that can approach and move away from the wire clamped by the clamping mechanism. The sliding frame is provided with a first driving member whose output end can output a rotational force. The output end of the first driving member is provided with a cutting and forming tool set that can cut and grind the wire by rotation. The frame is provided with a driving mechanism that can drive the wire clamped by the clamping mechanism and cut by the cutting and forming mechanism to rotate. By providing the sliding frame, the first driving member, the cutting and forming tool set and the driving mechanism, the first driving member drives the cutting and forming tool set to rotate. When the sliding frame approaches the wire at the clamped end of the clamping mechanism, the rotating cutting and forming tool set can also approach the wire, so that the cutting and forming tool set can cut the wire. Then the driving mechanism drives the clamping mechanism to rotate, and the clamping mechanism drives the wire clamped by the clamping mechanism and cut by the cutting and forming mechanism to rotate. The rotation direction of the wire clamped by the clamping mechanism and cut by the cutting and forming mechanism is opposite to the rotation direction of the cutting and forming tool set, and the rotating cutting and forming tool set realizes the grinding and forming of the wire clamped by the clamping mechanism and cut by the cutting and forming mechanism.

[0008] Further, the cutting and forming tool set includes a first cutting tool and a second cutting tool that are connected to the output end of the first driving member and are coaxially arranged. The cross-sections of the first cutting tool and the second cutting tool are circular ring-shaped. The maximum outer diameter of the second cutting tool is smaller than the minimum outer diameter of the first cutting tool.

[0009] There is one second cutting tool, and the second cutting tool is attached to the end face of the first cutting tool on the side away from the wire feeding mechanism. The outer diameter of the second cutting tool gradually decreases from the side close to the first cutting tool to the side away from the first cutting tool.

[0010] Or there is one second cutting tool, and the second cutting tool and the first cutting tool are spaced apart on the output end of the first driving member. The second cutting tool is located between the first cutting tool and the clamping mechanism.

[0011] Or two second cutting blades are spaced on the output end of the first driving member. One second cutting blade is attached to the end face of the first cutting blade on the side away from the wire feeding mechanism, and its outer diameter gradually decreases from the side close to the first cutting blade to the side away from the first cutting blade. The other second cutting blade is located between the second cutting blade attached to the first cutting blade and the clamping mechanism. By providing the first cutting blade and the second cutting blade, the rotating first cutting blade cuts the metal wire. When there is one second cutting blade attached to the first cutting blade and with a gradually decreasing outer diameter, the rotating second cutting blade can grind the cutting point of the metal wire clamped by the clamping mechanism and cut by the first cutting blade into a tip; when there is one second cutting blade spaced from the first cutting blade, the rotating second cutting blade can process a groove between the cutting point and the clamping point of the metal wire clamped by the clamping mechanism and cut by the first cutting blade; when two second cutting blades are provided, one second cutting blade grinds the cutting point of the metal wire clamped by the clamping mechanism and cut by the first cutting blade into a tip through rotation, and the other second cutting blade processes a groove at the position between the cutting point and the clamping point of the metal wire through rotation. Thus, ear pins with a preset shape having a tip or a groove or both a tip and a groove can be mass-produced.

[0012] Further, the clamping mechanism is an automatic chuck having a plurality of jaws. The clamping mechanism is rotatably connected to the machine frame. The driving mechanism includes a second driving member whose output end can output a rotational force. The output end of the second driving member is drivingly connected to the clamping mechanism through a transmission member. By providing the clamping mechanism, the second driving member and the transmission member, the rotational force output by the output end of the second driving member is transmitted to the clamping mechanism through the transmission member, and the rotating clamping mechanism drives the metal wire clamped by the clamping mechanism and cut by the cutting and forming mechanism to rotate.

[0013] Further, the machine frame is provided with a typing and stamping mechanism that can stamp a character mark on the metal wire straightened by the straightening mechanism. By providing the typing and stamping mechanism to stamp a character mark on the metal wire straightened by the straightening mechanism, the automatic typing and stamping function is realized, which is time-saving and labor-saving compared with manual typing and stamping.

[0014] Further, the typing and stamping mechanism includes a character mark seat. The character mark seat is provided with a third wire groove for avoiding the straightened metal wire. The character mark seat is provided with a sliding seat that can approach and move away from the third wire groove. The sliding seat is provided with a fourth wire groove whose recessed direction is opposite to that of the third wire groove. The sliding seat is provided with a character mark head. By providing the character mark seat, the sliding seat and the character mark head, the third wire groove and the fourth wire groove avoid the metal wire. When the sliding seat approaches the third wire groove, the character mark head also approaches the third wire groove, so that the character mark head can strike the metal wire passing through the third wire groove and the fourth wire groove to realize typing and stamping.

[0015] Further, the frame is provided with a wire supporting frame located below the cutting and forming tool set. The wire supporting frame is provided with a receiving groove that allows the metal wire to pass through and limits the metal wire. The wire supporting frame is provided with an avoidance chamber for avoiding the cutting and forming tool set. By providing the wire supporting frame, the receiving groove ensures the supporting effect on the metal wire and prevents the metal wire from deforming under the action of gravity. Through the limiting effect of the receiving groove, the moving amplitude and deformation degree generated when the metal wire cut off and clamped by the clamping mechanism contacts the cutting and forming tool set are effectively reduced. After the processing is completed, the clamping mechanism releases the earring, and the metal wire conveyed by the wire feeding mechanism ejects the earring out of the receiving groove and passes through the receiving groove itself.

[0016] Further, the frame is provided with an insulating frame made of insulating material and capable of moving along with the second jaw. The insulating frame is provided with two detecting claws made of conductive material and located on both sides of the second jaw in the sliding direction, which can contact the metal wire. The detecting claws are controlled and connected to the straightening mechanism, wire feeding mechanism, clamping mechanism, cutting and forming mechanism and driving mechanism through a controller. By providing the insulating frame and the detecting claws, when the two detecting claws cannot touch the metal wire, that is, when the holding amount of the metal wire as the material is insufficient, the straightening mechanism, wire feeding mechanism, clamping mechanism, cutting and forming mechanism and driving mechanism stop operating, and the operator can timely replenish the metal wire as the material.

[0017] Further, the frame is provided with an aggregate box located below the clamping mechanism, and the frame is provided with a slag suction machine with an air suction end facing the cutting and forming mechanism. By providing the aggregate box, the earring can be collected directionally, and the slag suction machine can suck the metal powder generated when the cutting and forming mechanism processes the metal wire, ensuring the cleanliness of the working environment.

[0018] In summary, the utility model has the advantages of convenient use, reasonable structure, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the utility model;

[0020] Figure 2 is Figure 1 a partial enlarged view of area A in

[0021] Figure 3 is Figure 1 a partial enlarged view of area B in

[0022] Figure 4 is a schematic structural diagram of the frame, wire feeding mechanism, first jaw driving cylinder, sliding table cylinder, insulating frame and detecting claws;

[0023] Figure 5 is a schematic structural diagram of the first jaw and the first jaw driving cylinder;

[0024] Figure 6It is a schematic structural diagram of the explosion effect of the first clamping jaw;

[0025] Figure 7 It is a schematic structural diagram of the second clamping jaw and the driving cylinder of the second clamping block;

[0026] Figure 8 It is a schematic structural diagram of the explosion effect of the second clamping jaw;

[0027] Figure 9 It is a schematic structural diagram of the frame and the cutting and forming mechanism;

[0028] Figure 10 It is a schematic structural diagram of the first driving member and the cutting and forming tool set;

[0029] Figure 11 It is Figure 10 A partial enlarged view of area C in

[0030] Figure 12 It is a schematic structural diagram of another embodiment of the first driving member and the cutting and forming tool set;

[0031] Figure 13 It is Figure 12 A partial enlarged view of area D in

[0032] Figure 14 It is a schematic structural diagram of another embodiment of the first driving member and the cutting and forming tool set;

[0033] Figure 15 It is Figure 14 A partial enlarged view of area E in

[0034] Figure 16 It is a schematic structural diagram of the frame, the clamping mechanism and the driving mechanism;

[0035] Figure 17 It is a schematic structural diagram of the frame and the typing and printing mechanism;

[0036] Figure 18 It is Figure 17 A schematic structural diagram of the sectional view along the F-F line;

[0037] Figure 19 It is Figure 17 A partial enlarged view of area G in

[0038] Figure 20 It is a schematic diagram of the mechanism of the frame, the first driving member, the cutting and forming tool set and the wire supporting frame;

[0039] Figure 21 It is Figure 20 A partial enlarged view of area H in

[0040] In the figure: 1, frame; 11, placement rack; 12, wire support rack; 121, accommodation groove; 13, aggregate box; 14, first clamping block driving cylinder; 15, sliding table cylinder; 151, second clamping block driving cylinder; 2, straightening mechanism; 21, horizontal straightener; 22, vertical straightener; 23, rotary straightener; 3, wire feeding mechanism; 31, first clamping jaw; 311, first clamping block; 312, second clamping block; 32, second clamping jaw; 321, third clamping block; 322, fourth clamping block; 4, clamping mechanism; 5, cutting and forming mechanism; 51, sliding rack; 52, first driving member; 53, cutting and forming tool set; 531, first cutting tool; 532, second cutting tool; 6, driving mechanism; 61, second driving member; 62, transmission member; 7, typing and printing mechanism; 71, printing seat; 711, third wire groove; 72, sliding seat; 721, fourth wire groove; 73, printing head; 8, insulating rack; 81, detection claw. Specific embodiments

[0041] Now, with reference to the accompanying drawings and embodiments, the present utility model will be further described in detail. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model. For ease of understanding, Figure 1 The upper part is the upper part of the present utility model, Figure 1 The lower part is the lower part of the present utility model. Embodiment 1

[0042] Refer to Figures 1 to 8, the utility model includes a frame 1, the frame 1 is provided with a placement rack 11 for holding metal wires, and the metal wires after being wound on a spool can be threaded on the placement rack 11. The frame 1 is provided with a straightening mechanism 2 capable of straightening the metal wires. The straightening mechanism 2 includes a horizontal straightener 21, a vertical straightener 22 and a rotary straightener 23. The horizontal straightener 21, the vertical straightener 22 and the rotary straightener 23 are common components in the field of wire straightening, and their structural principles are already known to those skilled in the art, so they will not be elaborated here. The frame 1 is provided with a wire feeding mechanism 3 capable of directionally conveying the metal wires, and the frame 1 is provided with a clamping mechanism 4 capable of clamping and releasing the end of the metal wire conveyed by the wire feeding mechanism 3. The wire feeding mechanism 3 includes a first jaw 31 provided on the frame 1 for clamping and releasing the metal wire. The frame 1 is provided with a second jaw 32 capable of approaching the first jaw 31 and moving away from the clamping mechanism 4, and moving away from the first jaw 31 and approaching the clamping mechanism 4. The second jaw 32 can clamp and release the metal wire. The first jaw 31 includes a first clamping block 311 and a second clamping block 312 arranged at intervals in the up and down directions. The first clamping block 311 is fixedly connected to the frame 1, and the second clamping block 312 approaches and moves away from the first clamping block 311 in the up and down directions through a first clamping block driving cylinder 14 provided on the frame 1, so that the first jaw 31 can clamp and release the metal wire. The second jaw 32 includes a third clamping block 321 and a fourth clamping block 322 arranged at intervals in the up and down directions. The frame 1 is provided with a slide cylinder 15, and the model of the slide cylinder 15 is HLS16X30SAS. The third clamping block 321 is fixedly connected to the output end of the slide cylinder 15, and the fourth clamping block 322 approaches and moves away from the third clamping block 321 in the up and down directions through a second clamping block driving cylinder 151 provided on the output end of the slide cylinder 15, so that the second jaw 32 can clamp and release the metal wire. The second jaw 32 approaches the first jaw 31 and moves away from the clamping mechanism 4, and moves away from the first jaw 31 and approaches the clamping mechanism 4 through the slide cylinder 15. In the first jaw 31 and the second jaw 32, the first clamping block 311 and the third clamping block 321 are provided with a first wire groove recessed upward, and the second clamping block 312 and the fourth clamping block 322 are provided with a second wire groove recessed downward. The metal wire is limited by the first wire groove and the second wire groove and is prevented from being squeezed and deformed. When the second jaw 32 releases the metal wire, approaches the first jaw 31 and moves away from the clamping mechanism 4, the first jaw 31 clamps the metal wire to prevent the metal wire from retracting; then the second jaw 32 clamps the metal wire and the first jaw 31 releases the metal wire. The second jaw 32 clamps the metal wire and moves away from the first jaw 31 and approaches the clamping mechanism 4, so as to realize the directional conveying of the metal wire. The stroke of the second jaw 32 when sliding towards the clamping mechanism 4 under the drive of the slide cylinder 15 is the single conveying length of the metal wire.

[0043] Refer to Figure 1 , Figure 3 and Figures 9 to 11, the frame 1 is provided with a cutting and forming mechanism 5 that can cut the wire clamped at the clamping end of the clamping mechanism 4 and grind and form the wire clamped by the clamping mechanism 4 after cutting. The cutting and forming mechanism 5 includes a sliding frame 51 that can approach and retreat from the wire clamped by the clamping mechanism 4. The sliding frame 51 is slidably connected to the guide rail vertically arranged on the frame 1. The frame 1 is provided with a cylinder for driving the sliding frame 51 to slide. The cylinder drives the sliding frame 51 to slide along the guide rail so as to approach and retreat from the wire clamped by the clamping mechanism 4. It is also possible to approach and retreat from the wire clamped by the clamping mechanism 4 by other sliding guiding members such as guide posts and guide sleeves and slide from other directions. The sliding frame 51 is provided with a first driving member 52 whose output end can output a rotational force. The first driving member 52 can be selected as a combination of a motor and a reducer. The output end of the first driving member 52 is the output end of the reducer. The output end of the first driving member 52 is provided with a cutting and forming tool group 53 that can cut and grind and form the wire by rotation.

[0044] Refer to Figures 9 to 11 , the cutting and forming tool group 53 includes a first cutting tool 531 and a second cutting tool 532 that are connected to the output end of the first driving member 52 and arranged coaxially. The output end of the first driving member 52 can be provided with a cylindrical tool holder for carrying the first cutting tool 531 and the second cutting tool 532. The cross-sections of the first cutting tool 531 and the second cutting tool 532 are annular. The middle parts of the first cutting tool 531 and the second cutting tool 532 are used for connection and installation, and the outer parts are used for cutting. The maximum outer diameter of the second cutting tool 532 is smaller than the minimum outer diameter of the first cutting tool 531. The first cutting tool 531 can contact and cut the wire before the second cutting tool 532 contacts the wire. The extending direction of the axes of the first cutting tool 531 and the second cutting tool 532 is parallel to the moving direction of the wire when it is conveyed by the wire feeding mechanism 3. In this embodiment, there is one second cutting tool 532. The second cutting tool 532 is attached to the end face on the side of the first cutting tool 531 away from the wire feeding mechanism 3. The outer diameter of the second cutting tool 532 gradually decreases from the side close to the first cutting tool 531 to the side away from the first cutting tool 531. The rotating first cutting tool 531 realizes the cutting of the wire. When there is one second cutting tool 532 attached to the first cutting tool 531 and with a gradually decreasing outer diameter, the rotating second cutting tool 532 can grind the cutting part of the wire clamped by the clamping mechanism 4 and cut by the first cutting tool 531 into a tip.

[0045] Refer to Figure 1 , Figure 3 , Figures 9 to 11 and Figure 16, the frame 1 is provided with a driving mechanism 6 that can drive the rotation of the wire clamped by the clamping mechanism 4 and cut by the cutting and forming mechanism 5. The clamping mechanism 4 is an automatic chuck with a number of jaws, and a pneumatic automatic chuck of model HGDT-50-A-F can be selected. The clamping mechanism 4 is rotationally connected to the frame 1 through a rotating shaft. The driving mechanism 6 includes a second driving member 61 whose output end can output a rotational force. The output end of the second driving member 61 is drivingly connected to the clamping mechanism 4 through a transmission member 62. The second driving member 61 can be selected as a motor, and the transmission member 62 can be selected as a combination of synchronous pulleys and synchronous belts. The rotational force output by the output end of the second driving member 61 is transmitted to the clamping mechanism 4 through the transmission member 62, and the rotating clamping mechanism 4 drives the rotation of the wire clamped by the clamping mechanism 4 and cut by the cutting and forming mechanism 5. When a pneumatic automatic chuck is selected as the clamping mechanism 4, after the clamping mechanism 4 rotates a certain number of turns in a preset direction, the second driving member 61 and the transmission member 62 can reverse the clamping mechanism 4 by a certain number of turns to prevent the air supply pipe on the pneumatic automatic chuck from winding. The first driving member 52 drives the cutting and forming tool set 53 to rotate. When the sliding frame 51 approaches the wire at the clamped end of the clamping mechanism 4, the rotating cutting and forming tool set 53 can also approach the wire, so that the cutting and forming tool set 53 can cut the wire. Then, the driving mechanism 6 drives the clamping mechanism 4 to rotate, and the clamping mechanism 4 drives the rotation of the wire clamped by the clamping mechanism 4 and cut by the cutting and forming mechanism 5. The rotation direction of the wire clamped by the clamping mechanism 4 and cut by the cutting and forming mechanism 5 is opposite to the rotation direction of the cutting and forming tool set 53. The rotating cutting and forming tool set 53 realizes the grinding and forming of the wire clamped by the clamping mechanism 4 and cut by the cutting and forming mechanism 5. The processing and forming of the earring is realized by the cutting and forming tool set 53 approaching the wire in a linear sliding manner and the rotation of the wire and the cutting and forming tool set 53. A programmable multi-axis moving platform can also be used as the sliding frame 51. The first driving member 52 rotates the cutting and forming tool set 53, and the sliding frame 51 enables the cutting and forming tool set 53 to perform a linear sliding movement approaching the wire and a circumferential rotation around the outside of the wire, completing the cutting and grinding and forming of the wire, thereby realizing the processing and forming of the earring. In this way, there is no need for the clamping mechanism 4 and the wire to rotate, but the cost is relatively high and the overall machine occupies a large space.

[0046] Refer to Figure 1 , Figure 3 and Figures 17 to 19, the frame 1 is provided with a typing mechanism 7 capable of stamping characters on the wire straightened by the straightening mechanism 2. By setting the typing mechanism 7 to stamp characters on the wire straightened by the straightening mechanism 2, the automatic typing function is realized, which is time-saving and labor-saving compared with manual typing. In this embodiment, the typing process is carried out before the wire cutting process. The typing mechanism 7 includes a character printing seat 71. The character printing seat 71 is provided with a third wire groove 711 for avoiding the straightened wire. The character printing seat 71 is provided with a sliding seat 72 that can approach and move away from the third wire groove 711. The sliding seat 72 is provided with a fourth wire groove 721 whose recessed direction is opposite to that of the third wire groove 711. The position of the fourth wire groove 721 on the sliding seat 72 is correspondingly set with the position of the third wire groove 711 on the character printing seat 71. The sliding seat 72 is provided with a character printing head 73. The sliding seat 72 is elastically connected to the character printing seat 71 by a spring, and the bolt passing through the spring and screwed on the character printing seat 71 prevents the sliding seat 72 from detaching. The frame 1 is provided with a cylinder whose output end can abut against the sliding seat 72. The sliding seat 72 is made to approach and move away from the third wire groove 711 by the pushing of the cylinder output end and the reset and rebound action of the spring. The third wire groove 711 and the fourth wire groove 721 avoid and limit the wire. When the sliding seat 72 approaches the third wire groove 711, the character printing head 73 also approaches the third wire groove 711, so that the character printing head 73 can strike the wire passing through the third wire groove 711 and the fourth wire groove 721 to realize character stamping. Embodiment 2

[0047] Refer to Figure 12 and Figure 13 , which provides another embodiment. The basic structure is the same as the above structure. Specifically, in the cutting and forming tool set 53, the position of the second cutting tool 532 relative to the first cutting tool 531 is different. Specifically: there is one second cutting tool 532, and the second cutting tool 532 and the first cutting tool 531 are arranged at intervals on the output end of the first driving member 52. The second cutting tool 532 is located between the first cutting tool 531 and the clamping mechanism 4. When there is one second cutting tool 532 arranged at intervals with the first cutting tool 531, the rotating second cutting tool 532 can process a groove between the cutting position and the clamping position of the wire clamped by the clamping mechanism 4 and cut by the first cutting tool 531. Embodiment 3

[0048] Refer to Figure 14 and Figure 15, which provides another embodiment. The basic structure is the same as the above structure. Specifically, in the cutting and forming cutter group 53, the number of the second cutters 532 is different. Two second cutters 532 are spaced apart on the output end of the first driving member 52. One second cutter 532 is attached to the end face of the first cutter 531 on the side away from the wire feeding mechanism 3, and its outer diameter gradually decreases from the side close to the first cutter 531 to the side away from the first cutter 531. The other second cutter 532 is located between the second cutter 532 attached to the first cutter 531 and the clamping mechanism 4. When two second cutters 532 are provided, one second cutter 532 grinds the cut-off part of the wire clamped by the clamping mechanism 4 and cut by the first cutter 531 into a tip by rotation, and the other second cutter 532 processes a groove at the position between the cut-off part and the clamped part of the wire by rotation. Thus, it is possible to mass-produce ear pins with a preset shape having a tip or a groove or both a tip and a groove.

[0049] Preferably, referring to Figure 20 and Figure 21 , the frame 1 is provided with a wire supporting frame 12 below the cutting and forming cutter group 53. The wire supporting frame 12 is provided with a receiving groove 121 that allows the wire to pass through and limits the position of the wire. The wire supporting frame 12 is provided with an avoidance chamber for avoiding the cutting and forming cutter group 53. The receiving groove 121 ensures the lifting effect on the wire and prevents the wire from deforming under the action of gravity; through the limiting effect, the receiving groove 121 effectively reduces the moving amplitude and deformation degree of the wire clamped by the clamping mechanism 4 and contacting the cutting and forming cutter group 53 after being cut. After the processing is completed, the clamping mechanism 4 releases the ear pin, and the wire conveyed by the wire feeding mechanism 3 ejects the ear pin from the receiving groove 121 and passes through the receiving groove 121 itself.

[0050] Preferably, referring to Figure 4, the frame 1 is provided with an insulating frame 8 made of insulating material and capable of moving along with the second jaw 32. Specifically, the insulating frame 8 is arranged on the output end of the slide cylinder 15, and the insulating material can be selected from rubber or plastic. The insulating frame 8 is provided with two detecting jaws 81 made of conductive material and capable of contacting the metal wire, which are respectively located on both sides of the second jaw 32 in the sliding direction. The detecting jaws 81 can be made of metal material, and the detecting jaws 81 are controlled and connected to the straightening mechanism 2, the wire feeding mechanism 3, the clamping mechanism 4, the cutting and forming mechanism 5 and the driving mechanism 6 through the controller. The detecting jaws 81 can be set in a plate shape with contact holes, and the metal wire can contact the inner wall of the contact hole and pass through the contact hole. When the two detecting jaws 81 cannot touch the metal wire, that is, when the metal wire holding amount of the material is insufficient, the straightening mechanism 2, the wire feeding mechanism 3, the clamping mechanism 4, the cutting and forming mechanism 5 and the driving mechanism 6 stop operating, and the operator can timely supplement the metal wire as the material. The frame 1 is provided with an aggregate box 13 located below the clamping mechanism 4, and the frame 1 is provided with a slag suction machine with the suction end facing the cutting and forming mechanism 5. By setting the aggregate box 13, the ear pins can be collected directionally, and the slag suction machine can suck the metal powder generated when the cutting and forming mechanism 5 processes the metal wire, ensuring the cleanliness of the working environment.

[0051] When the present utility model is in use, the wire feeding mechanism 3 conveys the metal wire on the placement rack 11 towards the clamping mechanism 4 directionally. The single metal wire is straightened by the straightening mechanism 2 during conveying to ensure the straightness of the metal wire. The clamping mechanism 4 clamps the end of the metal wire conveyed by the wire feeding mechanism 3 and straightened by the straightening mechanism 2. The first driving member 52 drives the cutting and forming tool group 53 to rotate, the sliding frame 51 approaches the metal wire at the end clamped by the clamping mechanism 4, the first cutting tool 531 in the cutting and forming tool group 53 cuts the metal wire, and then the driving mechanism 6 drives the clamping mechanism 4 to rotate. The clamping mechanism 4 drives the metal wire clamped by the clamping mechanism 4 and cut by the first cutting tool 531 to rotate. The rotation direction of the metal wire clamped by the clamping mechanism 4 and cut by the first cutting tool 531 is opposite to the rotation direction of the cutting and forming tool group 53, and the rotating second cutting tool 532 realizes the grinding and forming of the metal wire clamped by the clamping mechanism 4 and cut by the cutting and forming mechanism 5. After repeated operations, a batch of ear pins with a preset shape are produced.

[0052] The above content is only an example and description of the structure of the present utility model. Those skilled in the art of the present technology make various modifications or supplements or use similar methods to replace the specific embodiments described, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims of this patent, they should all belong to the protection scope of the present utility model.

Claims

1. An earring needle forming device, characterized by: The invention comprises a frame (1), wherein the frame (1) is provided with a placing frame (11) for holding metal wires, the frame (1) is provided with a straightening mechanism (2) capable of straightening the metal wires, the frame (1) is provided with a wire feeding mechanism (3) capable of conveying the metal wires in a directional manner, the frame (1) is provided with a clamping mechanism (4) capable of clamping and releasing the ends of the metal wires conveyed by the wire feeding mechanism (3), and the frame (1) is provided with a cutting and shaping mechanism (5) capable of cutting the metal wires at the ends clamped by the clamping mechanism (4) and grinding and shaping the cut metal wires clamped by the clamping mechanism (4).

2. The ear stud threading and forming device according to claim 1, characterized in that: The wire feeding mechanism (3) comprises a first clamping jaw (31) disposed on a frame (1) and capable of clamping and releasing a metal wire, the frame (1) being provided with a second clamping jaw (32) capable of being close to the first clamping jaw (31) and away from the clamping mechanism (4), and away from the first clamping jaw (31) and close to the clamping mechanism (4), the second clamping jaw (32) being capable of clamping and releasing the metal wire.

3. The ear stud threading and forming device according to claim 1, characterized in that: The cutting and forming mechanism (5) comprises a sliding frame (51) capable of approaching and moving away from a metal wire clamped by a clamping mechanism (4); the sliding frame (51) is provided with a first driving member (52) at an output end capable of outputting a rotational force; the output end of the first driving member (52) is provided with a cutting and forming knife group (53) capable of cutting and grinding the metal wire by rotation; and the frame (1) is provided with a driving mechanism (6) capable of driving the metal wire clamped by the clamping mechanism (4) and cut by the cutting and forming mechanism (5) to rotate.

4. The ear stud threading and forming device according to claim 3, characterized in that: The cutting and forming knife set (53) comprises a first cutter (531) and a second cutter (532) connected to the output end of the first driving member (52) and coaxially arranged, the first cutter (531) and the second cutter (532) having a circular ring-shaped cross section, and the maximum outer diameter of the second cutter (532) being smaller than the minimum outer diameter of the first cutter (531); The second cutter (532) is provided with one piece, and the second cutter (532) is attached to the end surface of the first cutter (531) on a side away from the wire feeding mechanism (3), and the outer diameter of the second cutter (532) gradually decreases from the side close to the first cutter (531) to the side away from the first cutter (531); Or the second cutter (532) is provided with one piece, the second cutter (532) and the first cutter (531) are arranged at an interval on the output end of the first driving member (52), and the second cutter (532) is located between the first cutter (531) and the clamping mechanism (4); Or two second cutters (532) are arranged at intervals on the output end of the first driving member (52), one second cutter (532) being attached to the end surface of the first cutter (531) on a side away from the wire feeding mechanism (3) and having an outer diameter gradually decreasing from a side close to the first cutter (531) to a side away from the first cutter (531), and the other second cutter (532) being located between the second cutter (532) attached to the first cutter (531) and the clamping mechanism (4).

5. The ear stud threading and forming device according to claim 3, characterized in that: The clamping mechanism (4) is an automatic chuck having a plurality of clamping claws. The clamping mechanism (4) is rotatably connected to the frame (1). The driving mechanism (6) comprises a second driving member (61) having an output end capable of outputting a rotational force. The output end of the second driving member (61) is drivably connected to the clamping mechanism (4) via a transmission member (62).

6. The ear stud threading and forming device according to claim 1, characterized in that: The frame (1) is provided with a typing mechanism (7) capable of striking characters onto the metal wire straightened by the straightening mechanism (2).

7. The earring needle forming device according to claim 6, characterized in that: The typing printing mechanism (7) comprises a printing seat (71), the printing seat (71) being provided with a third wire groove (711) for avoiding the straightened metal wire, the printing seat (71) being provided with a sliding seat (72) capable of approaching and moving away from the third wire groove (711), the sliding seat (72) being provided with a fourth wire groove (721) whose recessed direction is opposite to that of the third wire groove (711), and the sliding seat (72) being provided with a printing head (73).

8. The ear stud threading and forming device according to claim 4, characterized in that: The frame (1) is provided with a wire support frame (12) located below the cutting and forming knife group (53), the wire support frame (12) is provided with a receiving groove (121) that allows a metal wire to pass through and limits the position of the metal wire, and the wire support frame (12) is provided with an avoidance chamber for avoiding the cutting and forming knife group (53).

9. The ear stud threading and forming device according to claim 5, characterized in that: The frame (1) is provided with an insulating frame (8) made of insulating material and capable of moving with the second clamping jaw (32); the insulating frame (8) is provided with two detection claws (81) respectively located on both sides of the second clamping jaw (32) in the sliding direction and made of conductive material and capable of contacting the metal wire; the detection claws (81) are connected to the straightening mechanism (2), the wire feeding mechanism (3), the clamping mechanism (4), the cutting and forming mechanism (5) and the driving mechanism (6) through the control of a controller.

10. The ear stud threading and forming device according to claim 1, characterized in that: The frame (1) is provided with a material collecting box (13) located below the clamping mechanism (4), and the frame (1) is provided with a slag suction machine with a suction end facing the cutting and forming mechanism (5).

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