Automatic precious metal wire cutting-off equipment for earring production

Abstract

The utility model relates to the technical field of earring machining equipment, in particular to automatic precious metal wire cutting equipment for earring production. According to the technical scheme, the metal wire cutting device comprises a base, a cutting platform is erected above the base, a winding assembly is fixedly installed on the top of the base and located on one side of the cutting platform, a metal wire is wound around the winding assembly, a lubricating guide assembly is fixedly installed on the top of the base, and one end of the metal wire bypasses the lubricating guide assembly and is in lap joint with the top of the cutting platform; a cutter assembly is slidably mounted at the top of the cutting platform, and a blade is movably mounted on the cutter assembly. Metal wires are pushed to transversely move through the wire inlet assembly, the metal wires are conveniently pulled to the top of the cutting platform, follow-up cutting treatment is facilitated, the metal wires can be coated with lubricating agents through the lubricating guide assembly, the surface smoothness of the metal wires is improved, and friction generated between the metal wires and the cutting platform is reduced; the probability of scratches on the surface of the earring is reduced, and the quality of the earring is effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of earring processing equipment, and in particular to an automatic cutting device for precious metal wires used in earring production. Background Technology

[0002] In the production of earrings, precious metal wires, such as gold wire and silver wire, are required. As raw materials, precious metal wires are usually wound on winding rollers. During processing, the wires need to be pulled and then the pulled-out part is cut to obtain wires of matching length for subsequent bending, welding and other processes to produce the basic shape of earrings.

[0003] In existing earring production, precious metal wires are typically cut by a traction mechanism that pulls and stretches the wires to the top of the cutting platform, where they are then cut by a cutter. This eliminates the need for manual operation, resulting in faster processing speeds and improved production efficiency.

[0004] However, in the actual processing, when the precious metal wire is stretched, it will rub against the cutting platform. For precious metals with low hardness, scratches are easily generated on the surface of the precious metal wire, which significantly reduces the quality of the earrings. Therefore, this application proposes an automatic cutting device for precious metal wire in earring production that can reduce the probability of scratches on the surface of the precious metal wire. Utility Model Content

[0005] The purpose of this invention is to address the problem in the background art that precious metal wires are prone to scratches on their surface during traction and stretching, and to propose an automatic cutting device for precious metal wires used in earring production that can reduce the probability of scratches on the surface of precious metal wires.

[0006] The technical solution of this utility model: An automatic cutting device for precious metal wire in earring production, comprising a base, a cutting platform mounted above the base, and a winding assembly fixedly installed on the top of the base and on one side of the cutting platform, the winding assembly having metal wire wound on it, and further comprising:

[0007] A lubrication guide assembly is fixedly installed on the top of the base. One end of the metal wire passes around the lubrication guide assembly and overlaps the top of the cutting platform. The lubrication guide assembly is used for guiding and lubricating the metal wire.

[0008] A cutting assembly is slidably mounted on the top of a cutting platform, and a blade is movably mounted on the cutting assembly, the blade being positioned above the metal wire.

[0009] Optionally, the lubrication guide assembly includes a waste box, with two guide wheels rotatably mounted on the top of the waste box via a rotating rod. The metal wire is movably wound around the two guide wheels. A storage bin is fixedly mounted on the top of the guide wheels. A cap is fitted onto the top opening of the storage bin. A discharge pipe is fixedly mounted on the outer wall of the waste box.

[0010] Optionally, the guide wheel has a longitudinal channel inside, and the inner wall of the longitudinal channel has a transverse channel that passes through the guide wheel. A sponge sleeve is fitted onto the guide wheel, and the sponge sleeve covers the opening end of the transverse channel.

[0011] Optionally, the cutting assembly includes a blade holder slidably mounted on the top of the cutting platform, a cylinder fixedly mounted on the top of the blade holder, a blade support slidably mounted on the blade holder and below the cylinder, the output end of the cylinder being fixedly connected to the blade support, and the blade being fixedly mounted on the bottom end of the blade support.

[0012] Optionally, the top of the cutting platform has two T-shaped grooves, and the bottom of the blade holder is fixedly installed with a T-shaped slider. The T-shaped slider is slidably installed in the matching T-shaped grooves. A semi-circular wire harness groove is carved at the top of the cutting platform between the two T-shaped grooves. The end of the metal wire away from the winding assembly is embedded in the semi-circular wire harness groove. The bottom of the blade and above the semi-circular wire harness groove has a semi-circular protrusion. The diameter of the semi-circular wire harness groove is larger than the diameter of the semi-circular protrusion.

[0013] Optionally, the cutting platform is provided with a wire inlet assembly at one end near the winding assembly. The wire inlet assembly includes two symmetrically arranged U-shaped brackets. One of the U-shaped brackets is fixedly installed on the cutting platform, and the two U-shaped brackets are fixedly connected as one unit. A push guide wheel is rotatably installed on the inner side of the U-shaped bracket. One end of the metal wire passes through the gap between the two push guide wheels and is in close contact with them. A first motor is fixedly installed on the outer wall of the U-shaped bracket, and the output end of the first motor is fixedly connected to the shaft of the matching push guide wheel.

[0014] Optionally, the winding assembly includes two symmetrically arranged support plates, which are fixedly installed on the top of the base. A winding roller is movably mounted on the top of the two support plates, and the metal wire is wound on the winding roller. Two positioning rods are fixedly installed on the top of the support plates, and a limiting pressure plate is movably mounted on the two positioning rods arranged on the same side. The limiting pressure plate presses against the roller shaft at the end of the winding roller, and the threaded part at the top of the positioning rod passes through the limiting pressure plate and is threaded with a nut.

[0015] Optionally, a second motor is provided on one side of the support plate, and a support plate is provided below the second motor. The support plate is fixedly installed on the matching support plate, and the second motor is slidably installed on the top of the support plate. The output end of the second motor is engaged with one end of the winding roller shaft.

[0016] Optionally, one end of the winding roller shaft is chiseled with a cross-shaped groove, and the output end of the second motor is provided with a cross-shaped locking block, which is inserted into the cross-shaped groove and engaged with it.

[0017] Compared with the prior art, this application includes at least one of the following beneficial technical effects: the wire is pushed to move laterally by the wire feeding assembly, which facilitates the wire being pulled to the top of the cutting platform, making subsequent cutting and severing easier; the wire can be coated with lubricant by the lubrication guide assembly, which improves the smoothness of the wire surface, reduces the friction between the wire and the cutting platform, reduces the probability of scratches on its surface, and effectively improves the quality of the earring. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the lubrication guide assembly of this utility model;

[0020] Figure 3 This is a cross-sectional view of the material storage bin and guide wheel of this utility model;

[0021] Figure 4 This is a schematic diagram of the incoming line assembly structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the assembly of the cutter assembly and the cutting platform of this utility model;

[0023] Figure 6 This is a schematic diagram of the cutter assembly structure of this utility model;

[0024] Figure 7 This is a schematic diagram of the winding assembly structure of this utility model;

[0025] Figure 8 This is a schematic diagram of the assembly of the winding roller and the second motor of this utility model.

[0026] Attached reference numerals: 1. Base;

[0027] 2. Cutting platform; 21. T-shaped groove; 22. Semi-circular wire harness groove;

[0028] 3. Cutting blade assembly; 31. Blade holder; 32. Cylinder; 33. Blade base; 34. T-slide block; 35. Blade;

[0029] 4. Inlet assembly; 41. U-shaped bracket; 42. Propulsion guide wheel; 43. First motor;

[0030] 5. Lubrication and guiding assembly; 51. Waste box; 52. Storage bin; 53. Cover; 54. Guide wheel; 541. Longitudinal channel; 542. Transverse channel; 543. Sponge sleeve; 55. Discharge pipe;

[0031] 6. Metal wire;

[0032] 7. Winding assembly; 71. Support plate; 72. Winding roller; 721. Cross-shaped slot; 73. Positioning rod; 74. Limiting pressure plate;

[0033] 8. Second motor; 81. Support plate; 82. Cross-shaped locking block. Detailed Implementation

[0034] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0035] Example

[0036] like Figures 1-8 As shown, this utility model proposes an automatic cutting device for precious metal wire in earring production, including a base 1. A cutting platform 2 is fixedly installed on the top of the base 1 via a support frame. Several cutting blade assemblies 3 are slidably installed on the top of the cutting platform 2. The sliding installation structure facilitates the adjustment of the spacing between two adjacent cutting blade assemblies 3, enabling the processing of metal wires 6 of different lengths. Blades 35 are movably installed on the cutting blade assemblies 3, and the blades 35 are suspended above the metal wires 6. When the blades 35 move downwards, they can cut the metal wires 6, improving the convenience of cutting the metal wires 6. A winding assembly 7 is fixedly installed on the top of the base 1, and the winding assembly 7 is mounted on one side of the cutting platform 2. On the side, one end of the metal wire 6 is wound around the winding assembly 7, providing a sufficient amount of metal wire 6 for subsequent processing; a lubrication guide assembly 5 is fixedly installed on the top of the base 1. The lubrication guide assembly 5 is positioned between the winding assembly 7 and the cutting platform 2. During the process of the metal wire 6 being pulled to the cutting platform 2, the end of the metal wire 6 away from the winding assembly 7 is wound around the lubrication guide assembly 5. This not only limits the entry position of the metal wire 6, ensuring that the metal wire 6 can be pushed into the semi-circular wire spooling groove 22 at the top of the cutting platform 2, but also allows lubricant to be applied to the metal wire 6, improving the smoothness of the surface of the metal wire 6, reducing the friction between the metal wire 6 and the cutting platform 2, and reducing the probability of scratches on the surface of the metal wire 6.

[0037] Furthermore, the lubrication guide assembly 5 includes a waste box 51, which is fixedly installed above the base 1 by a support rod. Two guide wheels 54 are rotatably mounted on the top of the waste box 51 via a rotating rod. A metal wire 6 is movably wound around the two guide wheels 54. The guide wheels 54 limit the direction of the metal wire 6's entry, ensuring that the metal wire 6 can enter the semi-circular wire harness groove 22. A storage bin 52 is fixedly installed on the top of the guide wheels 54, and a cover 53 is snapped onto the top opening of the storage bin 52. When the storage bin is filled with a material, a sealing cap 53 is installed. When the material hopper 52 rotates with the guide wheel 54, the top opening of the material hopper 52 is sealed by the cover 53 to prevent the lubricant inside the material hopper 52 from spilling out. The cover 53 has a through hole to balance the pressure inside and outside the material hopper 52, ensuring that the lubricant can penetrate into the channel inside the guide wheel 54. A discharge pipe 55 is fixedly installed on the outer wall of the waste box 51. The lubricant flowing out of the guide wheel 54 falls into the waste box 51 and is then discharged outward from the discharge pipe 55, which facilitates the collection of waste lubricant.

[0038] Secondly, the guide wheel 54 is provided with a longitudinal channel 541 inside. A conduit is fixedly installed between the guide wheel 54 and the storage bucket 52. The lubricant in the storage bucket 52 can be discharged into the longitudinal channel 541 through the conduit. The inner side wall of the longitudinal channel 541 is provided with a transverse channel 542 that passes through the guide wheel 54. A sponge sleeve 543 is fitted on the guide wheel 54. The sponge sleeve 543 covers the opening end of the transverse channel 542. When the lubricant in the longitudinal channel 541 enters the transverse channel 542, it can penetrate into the sponge sleeve 543. The sponge sleeve 543 can not only protect the part of the metal wire 6 that contacts the guide wheel 54, but also allow the lubricant to be applied to the surface of the metal wire 6, effectively improving the smoothness of the surface of the metal wire 6.

[0039] Furthermore, the cutting assembly 3 includes a blade holder 31, with a T-shaped slider 34 fixedly installed at the bottom of the blade holder 31. Two T-shaped grooves 21 are chiseled at the top of the cutting platform 2. The aforementioned T-shaped slider 34 is inserted into the matching T-shaped grooves 21 and slidably connected to them, ensuring that the blade holder 31 can be stably slidably installed on the top of the cutting platform 2. This facilitates the adjustment of the distance between two adjacent blade holders 31. After adjustment, the bolts on the blade holder 31 are rotated. When the bottom end of the bolts is in close contact with the top of the cutting platform 2, the blade holder 31 can be locked and fixed, improving the stability of the blade holder 31 after adjustment. A cylinder 32 is fixedly installed on the top of the blade holder 31. The output end of the cylinder 32 is fixedly connected to the blade holder 33 slidably installed inside the blade holder 31. The blade 35 is fixedly installed on the lower surface of the blade holder 33. The cylinder 32 can drive the blade 35 to move up and down. When the cylinder 32 drives the blade 35 to move downward, it can cut the metal wire 6 in the semi-arc wire harness groove 22, facilitating the cutting operation.

[0040] Secondly, the bottom end of the blade 35 and above the semi-circular wire harness groove 22 is provided with a semi-circular protrusion. The diameter of the semi-circular wire harness groove 22 is larger than the diameter of the semi-circular protrusion. After the blade 35 moves down, the semi-circular protrusion is inserted into the semi-circular wire harness groove 22, which can completely cut the metal wire 6.

[0041] Furthermore, a wire inlet assembly 4 is fixedly installed at one end of the cutting platform 2 near the winding assembly 7. The wire inlet assembly 4 consists of two symmetrically arranged and fixedly connected U-shaped brackets 41. The lower U-shaped bracket 41 is fixedly installed at one end of the cutting platform 2. A push guide wheel 42 is rotatably installed on the inner side of the U-shaped bracket 41. One end of the metal wire 6 passes through the gap between the two push guide wheels 42 and makes close contact with them. When both push guide wheels 42 rotate toward one side of the cutting platform 2, the metal wire 6 can be pushed into the semi-arc wire harness groove 22. A first motor 43 is fixedly installed on the outer wall of the U-shaped bracket 41. The output end of the first motor 43 is fixedly connected to one end of the shaft of the matching push guide wheel 42 to ensure that the first motor 43 can drive the push guide wheel 42 to rotate stably.

[0042] Secondly, the winding assembly 7 includes two support plates 71 fixedly installed on the top of the base 1. A winding roller 72 is movably installed on the top of the two support plates 71. A large amount of metal wire 6 is wound on the winding roller 72. A support plate 81 is fixedly installed on the outer wall of one of the support plates 71. A second motor 8 is slidably installed on the top of the support plate 81. The output end of the second motor 8 is integrally engaged with the roller shaft of the winding roller 72. The second motor 8 can drive the winding roller 72 to rotate. During the process of the wire feeding assembly 4 pushing the metal wire 6, the winding roller 72 rotates towards the cutting platform 2, which can play an auxiliary role in wire feeding and improve the efficiency of wire feeding.

[0043] It is worth noting that one end of the winding roller 72 has a cross-shaped groove 721, and the output end of the second motor 8 is provided with a cross-shaped locking block 82. The cross-shaped locking block 82 is embedded in the cross-shaped groove 721 and engaged with it to ensure that the second motor 8 can drive the winding roller 72 to rotate stably. Two positioning rods 73 are fixedly installed on the top of the support plate 71. The two positioning rods 73 on the same side are movably mounted on a limiting pressure plate 74. The threaded end of the top of the positioning rod 73 passes through the limiting pressure plate 74 and is threaded with a nut. Ensure that the limiting pressure plate 74 can stably press on the roller shaft of the winding roller 72, thereby improving the stability of the winding roller 72 rotating on the support plate 71. When the metal wire 6 on the winding roller 72 is used up, the winding roller 72 needs to be replaced. At this time, first push the second motor 8 to the side away from the support plate 71. After the cross-shaped locking block 82 is pulled out from the cross-shaped locking slot 721, remove the nut and remove the limiting pressure plate 74 from the positioning rod 73. The winding roller 72 can then be replaced, which effectively improves the convenience of disassembling and assembling the winding roller 72.

[0044] In this embodiment, the metal wire 6 wound on the winding roller 72 is first pulled towards the wire feeding assembly 4, and the metal wire 6 is wound around the two guide wheels 54. The end of the metal wire 6 is inserted into the gap between the two push guide wheels 42 for subsequent automatic cutting. The first motor 43 drives the push guide wheels 42 to rotate. At this time, the push guide wheel 42 located above rotates counterclockwise, and the push guide wheel 42 located below rotates clockwise, which pushes the metal wire 6 into the semi-circular wire feeding groove 22. During this process, the second motor 8 drives the winding roller 72 to rotate clockwise, assisting the metal wire 6 to move towards the cutting platform 2 and improving the efficiency of the metal wire 6 feeding. When the metal wire 6 is pushed into the semi-circular wire feeding groove 22... After the wire feed stops inside the 2nd section, the cylinder 32 drives the blade 35 to move downwards. When the semi-circular protrusion at the bottom of the blade 35 inserts into the semi-arc wire harness groove 22, the metal wire 6 is cut, achieving an automatic cutting effect without manual operation, saving time and effort, and improving the efficiency of metal wire 6 cutting. Since the cutter assembly 3 is slidably installed on the top of the cutting platform 2, the distance between two adjacent cutter assemblies 3 can be adjusted, thus facilitating the adjustment of the distance between two adjacent blades 35. The distance between two adjacent blades 35 can be adjusted according to the length of the metal wire 6 to be cut, making operation convenient, meeting more processing needs, and improving the convenience of metal wire 6 cutting.

[0045] During the wire feeding process, the guide wheel 54 rotates as the wire 6 is stretched and moved. The sponge sleeve 543 protects the part of the wire 6 that contacts the guide wheel 54, reducing the friction between the wire 6 and the guide wheel 54. During this process, the lubricant stored in the storage tank 52 seeps into the longitudinal channel 541 and then into the sponge sleeve 543 along the transverse channel 542. Since the wire 6 is in contact with the sponge sleeve 543, the lubricant can be applied to the surface of the wire 6, improving the smoothness of the wire 6 surface. When the wire 6 contacts the cutting platform 2, the friction between the wire 6 and the cutting platform 2 is reduced, reducing the probability of scratches on the surface of the wire 6. In the process of processing the cut wire 6 into earrings, the probability of scratches on the earring surface is reduced, effectively improving the quality of the earrings.

[0046] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An automatic cutting device for precious metal wire in earring production, comprising a base (1), a cutting platform (2) mounted above the base (1), and a winding assembly (7) fixedly installed on the top of the base (1) and on one side of the cutting platform (2), wherein a metal wire (6) is wound on the winding assembly (7), characterized in that, It also includes: A lubrication guide assembly (5) is fixedly installed on the top of the base (1). One end of the metal wire (6) passes around the lubrication guide assembly (5) and overlaps the top of the cutting platform (2). The lubrication guide assembly (5) is used for guiding and lubricating the metal wire (6). A cutting assembly (3) is slidably mounted on the top of the cutting platform (2), and a blade (35) is movably mounted on the cutting assembly (3), the blade (35) being positioned above the metal wire (6).

2. The automatic cutting device for precious metal wire in earring production according to claim 1, characterized in that, The lubrication guide assembly (5) includes a waste box (51). Two guide wheels (54) are rotatably mounted on the top of the waste box (51) via a rotating rod. The metal wire (6) is movably wound around the two guide wheels (54). A storage bucket (52) is fixedly installed on the top of the guide wheels (54). A cover (53) is snapped into the top opening of the storage bucket (52). A discharge pipe (55) is fixedly installed on the outer side wall of the waste box (51).

3. The automatic cutting device for precious metal wire in earring production according to claim 2, characterized in that, The guide wheel (54) has a longitudinal channel (541) inside, and a transverse channel (542) through the guide wheel (54) is provided on the inner side wall of the longitudinal channel (541). A sponge sleeve (543) is fitted on the guide wheel (54), and the sponge sleeve (543) covers the opening end of the transverse channel (542).

4. The automatic cutting device for precious metal wire in earring production according to claim 1, characterized in that, The cutting assembly (3) includes a blade holder (31), which is slidably mounted on the top of the cutting platform (2). A cylinder (32) is fixedly mounted on the top of the blade holder (31). A blade holder (33) is slidably mounted on the blade holder (31) and below the cylinder (32). The output end of the cylinder (32) is fixedly connected to the blade holder (33). The blade (35) is fixedly mounted on the bottom end of the blade holder (33).

5. The automatic cutting device for precious metal wire in earring production according to claim 4, characterized in that, The top of the cutting platform (2) has two T-shaped grooves (21). The bottom of the blade holder (31) is fixedly installed with a T-shaped slider (34). The T-shaped slider (34) is slidably installed in the matching T-shaped grooves (21). A semi-circular wire harness groove (22) is carved at the top of the cutting platform (2) and between the two T-shaped grooves (21). The end of the metal wire (6) away from the winding assembly (7) is embedded in the semi-circular wire harness groove (22). The bottom of the blade (35) and above the semi-circular wire harness groove (22) has a semi-circular protrusion. The diameter of the semi-circular wire harness groove (22) is larger than the diameter of the semi-circular protrusion.

6. The automatic cutting device for precious metal wire in earring production according to claim 5, characterized in that, The cutting platform (2) has a wire inlet assembly (4) at one end near the winding assembly (7). The wire inlet assembly (4) includes two symmetrically arranged U-shaped brackets (41). One of the U-shaped brackets (41) is fixedly installed on the cutting platform (2). The two U-shaped brackets (41) are fixedly connected as one unit. A push guide wheel (42) is rotatably installed on the inner side of the U-shaped bracket (41). One end of the metal wire (6) passes through the gap between the two push guide wheels (42) and is in close contact with them. A first motor (43) is fixedly installed on the outer wall of the U-shaped bracket (41). The output end of the first motor (43) is fixedly connected to the shaft of the matching push guide wheel (42).

7. The automatic cutting device for precious metal wire in earring production according to claim 1, characterized in that, The winding assembly (7) includes two symmetrically arranged support plates (71). The support plates (71) are fixedly installed on the top of the base (1). A winding roller (72) is movably installed on the top of the two support plates (71). The metal wire (6) is wound on the winding roller (72). Two positioning rods (73) are fixedly installed on the top of the support plates (71). A limiting pressure plate (74) is movably installed on the two positioning rods (73) arranged on the same side. The limiting pressure plate (74) presses against the roller shaft at the end of the winding roller (72). The threaded part at the top of the positioning rod (73) passes through the limiting pressure plate (74) and is threaded with a nut.

8. The automatic cutting device for precious metal wire in earring production according to claim 7, characterized in that, A second motor (8) is provided on one side of the support plate (71), and a support plate (81) is provided below the second motor (8). The support plate (81) is fixedly installed on the matching support plate (71). The second motor (8) is slidably installed on the top of the support plate (71). The output end of the second motor (8) is engaged with one end of the roller shaft of the winding roller (72).

9. An automatic cutting device for precious metal wire in earring production according to claim 8, characterized in that, The winding roller (72) has a cross-shaped groove (721) at one end of its shaft, and the output end of the second motor (8) is provided with a cross-shaped locking block (82). The cross-shaped locking block (82) is inserted into the cross-shaped groove (721) and engaged with it.

Images