Wire ratio shearing mechanism

Abstract

The utility model discloses a kind of wire rod ratio shearing mechanisms, belong to wire rod ratio shearing field, a kind of wire rod ratio shearing mechanism, including linear module, mounting bracket, upper cutter assembly, lower cutter assembly, pressing plate and limit plate, the moving end of linear module is fixed with mounting bracket, upper cutter assembly and lower cutter assembly are set in mounting bracket, upper cutter assembly is located above lower cutter assembly, upper cutter assembly has first blade, the front side of first blade is provided with pressing plate, in initial state, the bottom end of pressing plate is below first blade, lower cutter assembly has second blade, the front side of second blade is provided with limit plate, limit plate is located in the front side of pressing plate, and the top end of limit plate is above second blade.

Description

Technical Field

[0001] This utility model belongs to the field of wire shearing, and particularly relates to a wire shearing mechanism. Background Technology

[0002] In the manufacturing of printed circuit boards (PCBs) and the assembly of electronic devices, soldering the outer-coated wire cores to PCB pads is a common process. In traditional processes, after the wire cores are routinely sheared, there is often a certain gap between the wire end and the PCB pad. This gap can be addressed by adjusting soldering parameters when soldering ordinary wires to achieve a basic electrical connection.

[0003] However, with the rapid development of electronic technology, new special material wires are gradually being applied to electronic devices. These special material wires typically have characteristics such as low hardness, high toughness, and low surface energy. The suspension between the core wire and the pad makes it difficult for the solder to fully wet and spread during the soldering process, easily leading to soldering defects such as cold solder joints, incomplete solder joints, etc., which seriously affect the electrical performance and long-term reliability of electronic devices. Although existing technologies exist to improve the soldering effect by increasing the amount of solder and extending the soldering time, these methods not only increase production costs but may also damage the outer sheath of the wire or cause the PCB pad to fall off due to excessively long soldering times. They cannot fundamentally solve the soldering quality problems caused by the suspension between the special wire and the pad. Therefore, there is an urgent need for a wire shearing mechanism that can reduce the suspension height between the core wire and the pad and improve the soldering quality of special wires. Utility Model Content

[0004] The purpose of this invention is to provide a wire shearing mechanism to overcome at least one of the above-mentioned defects in the prior art.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] This utility model provides a wire cutting mechanism, including a linear module, a mounting frame, an upper cutting blade assembly, a lower cutting blade assembly, a pressure plate, and a limiting plate. The moving end of the linear module is fixed to the mounting frame. The upper cutting blade assembly and the lower cutting blade assembly are both mounted on the mounting frame, with the upper cutting blade assembly located above the lower cutting blade assembly. The upper cutting blade assembly has a first cutting edge, and a pressure plate is provided on the front side of the first cutting edge. In the initial state, the bottom end of the pressure plate is located below the first cutting edge, and the pressure plate can move up and down relative to the first cutting edge. The lower cutting blade assembly has a second cutting edge, and a limiting plate is provided on the front side of the second cutting edge. The limiting plate is located on the front side of the pressure plate, and the top end of the limiting plate is located above the second cutting edge.

[0007] Preferably, the upper cutting blade assembly includes a first telescopic cylinder, a first blade holder, and a first cutting blade. The first telescopic cylinder is fixed to the upper part of the mounting bracket, the first blade holder is fixed to the bottom end of the first telescopic cylinder, the first cutting blade is detachably connected to the first blade holder, and the first cutting edge is located at the bottom end of the first cutting blade.

[0008] Preferably, it further includes a first spring and a cover plate. The first cutter has a first groove. The cover plate is disposed on the front side of the first groove and forms a first slide with the first groove. The pressure plate is slidably connected to the first slide. The bottom end of the first spring is connected to the pressure plate, and the top end of the first spring is connected to the first cutter holder.

[0009] Preferably, the lower cutter assembly includes a second telescopic cylinder, a second cutter holder, and a second cutter. The second telescopic cylinder is fixed to the lower part of the mounting bracket, and the second cutter holder is fixed to the top of the second telescopic cylinder. The second cutter is detachably connected to the second cutter holder, and the second cutting edge is located at the top of the second cutter.

[0010] Preferably, it also includes a first bolt, the limiting plate has a vertically arranged adjustment hole, the second cutter has a threaded hole, the first bolt passes through the adjustment hole and is inserted into the threaded hole, and the limiting plate is installed on the second cutter.

[0011] Preferably, the top surface of the second blade is horizontally positioned, and the bottom surface of the first blade is positioned at an angle of 1°-3° to the top surface of the second blade.

[0012] Preferably, the first cutting blades on the left and right sides of the first blade have a first limiting surface, and the second cutting blades on the left and right sides of the second blade have a second limiting surface, with the first limiting surface located directly above the second limiting surface.

[0013] Preferably, the second cutting blade on the rear side of the second cutting edge has a downwardly inclined bevel.

[0014] Preferably, the device further includes a collection box and a waste collection hood. The collection box is placed on the mounting frame, the waste collection hood is fixed to the second cutter holder and located behind the second cutter, and the discharge port of the waste collection hood is located above the collection box.

[0015] Preferably, it further includes a mounting base, a nut, a second bolt, a pressure block, and a second spring. The mounting base is fixed to the first cutter holder, the nut is fixed to the front end of the mounting base, the bottom end of the second bolt passes through the nut and extends to the bottom of the nut to fix the pressure block, the pressure block is located above the lower cutter assembly, the bottom end of the second spring is connected to the pressure block, and the top end of the second spring is connected to the nut.

[0016] Preferably, it also includes a guide rail, and both the first tool post and the second tool post are slidably connected to the guide rail.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. It not only completes the wire cutting process, but also reduces the height of the core wire end after cutting, improving the welding quality of special wires. Furthermore, forming and cutting are completed in the same process, without the need for additional equipment or manual intervention, thus improving production efficiency and uniformity.

[0019] 2. The first and second cutters are detachable and can be replaced according to different operational needs.

[0020] 3. The height of the limiting plate can be adjusted by using the first bolt in conjunction with the adjustment hole and threaded hole, thereby adjusting the shaping range to meet different operational needs.

[0021] 4. By setting the top surface of the first blade at an angle, combined with the second blade whose top surface is set horizontally, the shearing force is increased and the shear stability is improved.

[0022] 5. By coordinating the first and second limiting surfaces, excessive shearing is avoided.

[0023] 6. The waste material after shearing is discharged into the collection box through the waste collection hood for convenient subsequent waste treatment.

[0024] 7. By tightening the second bolt, the pressure block is pressed down to hold the fixture in place to prevent the fixture from springing up during shearing. At the same time, the second spring is used to maintain the preload of the pressure block on the fixture to improve stability. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0026] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention.

[0027] Figure 3 This is a partial three-dimensional exploded structural diagram of this utility model.

[0028] Figure 4 This is a three-dimensional structural diagram of the first cutter and cover plate of this utility model.

[0029] Figure 5 This is a schematic diagram of the cooperation structure between the limiting plate and the second cutter of this utility model.

[0030] Figure 6 This is a schematic diagram showing the angular relationship between the first and second cutting edges of this utility model.

[0031] Figure 7 This is a schematic diagram showing the positional relationship of the first cutter, the pressure plate, the second cutter, and the limiting plate of this utility model (first state).

[0032] Figure 8This is a schematic diagram showing the positional relationship of the first cutter, the pressure plate, the second cutter, and the limiting plate of this utility model (second state).

[0033] Figure 9 This is a schematic diagram showing the positional relationship of the first cutter, pressure plate, second cutter, and limiting plate of this utility model (third state).

[0034] Figure 10 This is a schematic diagram showing the positional relationship between the collection box, the waste collection cover, and the second cutter of this utility model.

[0035] Figure 11 yes Figure 10 A magnified structural diagram of A in the diagram.

[0036] Figure 12 This is a three-dimensional structural diagram of the mounting base, nut, second bolt, pressure block, and second spring of this utility model.

[0037] The labels in the attached diagram are as follows: 1-Linear module, 2-Mounting bracket, 3-Upper cutter assembly, 4-Lower cutter assembly, 5-Pressure plate, 6-Limiting plate, 31-First telescopic cylinder, 32-First cutter holder, 33-First cutter, 34-First blade, 7-First spring, 8-Cover plate, 35-First slide groove, 9-First slide rail, 41-Second telescopic cylinder, 42-Second cutter holder, 43-Second cutter, 44-Second blade, 10-First bolt, 61-Adjusting hole, 45-Threaded hole, 36-First limiting surface, 46-Second limiting surface, 47-Sloping surface, 11-Collection box, 12-Waste collection cover, 13-Mounting base, 14-Nut, 15-Second bolt, 16-Pressure block, 17-Second spring, 18-Guide rail. Detailed Implementation

[0038] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0039] Contents not described in detail in this specification are existing technologies known to those skilled in the art. In the description of this utility model, it should be understood that terms such as "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model. Furthermore, terms such as "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] like Figures 1 to 12As shown, the wire cutting mechanism provided in this embodiment includes a linear module 1, a mounting frame 2, an upper cutting blade assembly 3, a lower cutting blade assembly 4, a pressure plate 5, and a limiting plate 6. The moving end of the linear module 1 is fixed to the mounting frame 2. The upper cutting blade assembly 3 and the lower cutting blade assembly 4 are both disposed on the mounting frame 2. The upper cutting blade assembly 3 is located above the lower cutting blade assembly 4. The upper cutting blade assembly 3 has a first blade 34. A pressure plate 5 is disposed on the front side of the first blade 34. In the initial state, the bottom end of the pressure plate 5 is located below the first blade 34. The pressure plate 5 can move up and down relative to the first blade 34. The lower cutting blade assembly 4 has a second blade 44. A limiting plate 6 is disposed on the front side of the second blade 44. The limiting plate 6 is located on the front side of the pressure plate 5, and the top end of the limiting plate 6 is located above the second blade 44.

[0041] The wire is fixed to the cutting station by a fixture. The linear module 1 drives the mounting frame 2 and its upper structure to move back and forth, precisely positioning the cutting length. The initial position of the pressure plate 5 is lower than the first blade 34, and the initial position of the limiting plate 6 is higher than the second blade 44, forming a pre-compression and support structure. The upper cutting assembly 3 moves downward, and the pressure plate 5 first contacts and presses down on the wire behind the limiting plate 6. At the same time, the limiting plate 6 supports the wire from below, and the two work together to force the wire to bend into a "Z" shape. After the "Z" shape is formed, the first blade 34 continues to move downward, and the pressure plate 5 stops when it contacts the second blade 44. The first blade 34 and the second blade 44 form a shearing force to cut the wire. After the cutting is completed, the upper cutting assembly 3 and the lower cutting assembly 4 reset, and the cut "Z" shaped core wire is transferred to the welding station with the fixture.

[0042] In this way, not only is the wire cutting process completed, but the height of the cut core wire end is also reduced, decreasing the gap between the core wire and the solder pad, and even allowing the core wire to directly contact the solder pad, thus improving the welding quality of special wires. Furthermore, forming and cutting are completed in the same process, requiring no additional equipment or manual intervention, improving production efficiency and ensuring high uniformity.

[0043] The upper cutting blade assembly 3 includes a first telescopic cylinder 31, a first blade holder 32, and a first cutting blade 33. The first telescopic cylinder 31 is fixed to the upper part of the mounting bracket 2, and the first blade holder 32 is fixed to the bottom end of the first telescopic cylinder 31. The first cutting blade 33 is detachably connected to the first blade holder 32, and the first cutting edge 34 is located at the bottom end of the first cutting blade 33. During shearing operations, the first telescopic cylinder 31 extends, driving the first blade holder 32 to move downwards, causing the first cutting blade 33 to move downwards. The detachable first cutting blade 33 can be replaced according to different operational needs.

[0044] The system includes a first spring 7 and a cover plate 8. The first cutter 33 has a first groove 35. The cover plate 8 is located on the front side of the first groove 35 and forms a first slide 9 with the first groove 35. The pressure plate 5 is slidably connected to the first slide 9. The bottom end of the first spring 7 is connected to the pressure plate 5, and the top end of the first spring 7 is connected to the first blade holder 32. When the first cutter 33 moves downward, the pressure plate 5 first contacts the wire, pressing the wire downward to shape it. When the pressure plate 5 reaches the second cutter 43, it cannot move further downward. As the first cutter 33 continues to move downward, the first spring 7 contracts, and the first blade 34 moves to below the pressure plate 5 until it cooperates with the second blade 44 to perform a cutting action. After cutting, the first cutter 33 moves upward, and the first spring 7 extends, so that after the first cutter 33 returns to its original position, the bottom end of the pressure plate 5 is located below the first blade 34.

[0045] The lower cutting blade assembly 4 includes a second telescopic cylinder 41, a second blade holder 42, and a second cutting blade 43. The second telescopic cylinder 41 is fixed to the lower part of the mounting bracket 2, and the second blade holder 42 is fixed to the top of the second telescopic cylinder 41. The second cutting blade 43 is detachably connected to the second blade holder 42, and the second cutting edge 44 is located at the top of the second cutting blade 43. During shearing operations, the second telescopic cylinder 41 extends, driving the second blade holder 42 to move downwards, causing the second cutting blade 43 to move downwards. The detachable second cutting blade 43 can be replaced according to different operational needs.

[0046] The system includes a first bolt 10, a limiting plate 6 with a vertically arranged adjustment hole 61, and a second cutter 43 with a threaded hole 45. The first bolt 10 passes through the adjustment hole 61 and is inserted into the threaded hole 45, thus installing the limiting plate 6 onto the second cutter 43. By using the first bolt 10 in conjunction with the adjustment hole 61 and the threaded hole 45, the height of the limiting plate 6 is adjustable, thereby adjusting the shaping amplitude to adapt to different operational needs.

[0047] In this design, the top surface of the second blade 44 is horizontally positioned, while the bottom surface of the first blade 34 forms an angle of 1°-3° with the top surface of the second blade 44; in this embodiment, the angle is 1.8°. The inclined top surface of the first blade 34, combined with the horizontally positioned top surface of the second blade 44, increases the shearing force and improves shear stability. Furthermore, the horizontal top surface of the second blade 44 ensures that the pressure plate 5 can flatten the pressed portion of the wire when it is pressed down.

[0048] The first cutting blades 33 on both sides of the first cutting edge 34 have first limiting surfaces 36, and the second cutting blades 43 on both sides of the second cutting edge 44 have second limiting surfaces 46. The first limiting surfaces 36 are located directly above the second limiting surfaces 46. The cooperation between the first limiting surfaces 36 and the second limiting surfaces 46 prevents excessive shearing.

[0049] The second cutting blade 43, located behind the second blade 44, has a downwardly sloping bevel 47. The bevel 47 facilitates the discharge of waste material after shearing.

[0050] The system also includes a collection box 11 and a waste collection hood 12. The collection box 11 is placed on the mounting frame 2, and the waste collection hood 12 is fixed to the second cutter holder 42 and located behind the second cutter 43. The discharge port of the waste collection hood 12 is located above the collection box 11. The waste material after shearing is uniformly discharged into the collection box 11 through the waste collection hood 12 for convenient subsequent unified waste treatment.

[0051] The assembly includes a mounting base 13, a nut 14, a second bolt 15, a pressure block 16, and a second spring 17. The mounting base 13 is fixed to the first cutter holder 32, the nut 14 is fixed to the front end of the mounting base 13, the bottom end of the second bolt 15 passes through the nut 14 and extends to the bottom of the nut 14 to fix the pressure block 16, which is located above the lower cutter assembly 4. The bottom end of the second spring 17 is connected to the pressure block 16, and the top end of the second spring 17 is connected to the nut 14. To prevent the fixture from springing up during the cutting process, the pressure block 16 is pressed down by tightening the second bolt 15, thus improving stability. Furthermore, the second spring 17 effectively maintains the preload of the pressure block 16 on the fixture.

[0052] This includes a guide rail 18, with the first blade holder 32 and the second blade holder 42 both slidably connected to the guide rail 18. The cooperation between the guide rail 18 and the first blade holder 32 and the second blade holder 42 improves the stability of the shearing process.

[0053] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A wire shearing mechanism, characterized in that: It includes a linear module (1), a mounting bracket (2), an upper cutter assembly (3), a lower cutter assembly (4), a pressure plate (5), and a limiting plate (6); The moving end of the linear module (1) is fixed with a mounting bracket (2); The upper cutter assembly (3) and the lower cutter assembly (4) are both disposed on the mounting bracket (2), with the upper cutter assembly (3) located above the lower cutter assembly (4); The upper cutting blade assembly (3) has a first cutting edge (34), and a pressure plate (5) is provided on the front side of the first cutting edge (34). In the initial state, the bottom end of the pressure plate (5) is located below the first cutting edge (34), and the pressure plate (5) can move up and down relative to the first cutting edge (34). The lower cutting blade assembly (4) has a second cutting edge (44), and a limiting plate (6) is provided on the front side of the second cutting edge (44). The limiting plate (6) is located on the front side of the pressure plate (5), and the top of the limiting plate (6) is located above the second cutting edge (44).

2. The wire shearing mechanism according to claim 1, characterized in that: The upper cutting blade assembly (3) includes a first telescopic cylinder (31), a first blade holder (32), and a first cutting blade (33); The first telescopic cylinder (31) is fixed to the upper part of the mounting bracket (2); The bottom end of the first telescopic cylinder (31) is fixed with a first tool holder (32); The first cutter (33) is detachably connected to the first cutter holder (32); The first blade (34) is located at the bottom end of the first cutter (33).

3. The wire shearing mechanism according to claim 2, characterized in that: It also includes a first spring (7) and a cover plate (8); The first cutter (33) has a first groove (35), and the cover plate (8) is disposed on the front side of the first groove (35) and forms a first slide (9) with the first groove (35); The pressure plate (5) is slidably connected to the first slide rail (9); The bottom end of the first spring (7) is connected to the pressure plate (5), and the top end of the first spring (7) is connected to the first knife holder (32).

4. The wire shearing mechanism according to claim 2, characterized in that: The lower cutting blade assembly (4) includes a second telescopic cylinder (41), a second blade holder (42), and a second cutting blade (43); The second telescopic cylinder (41) is fixed to the lower part of the mounting bracket (2); The top of the second telescopic cylinder (41) is fixed with a second tool holder (42); The second cutter (43) is detachably connected to the second cutter holder (42); The second blade (44) is located at the top of the second cutter (43).

5. The wire shearing mechanism according to claim 4, characterized in that: It also includes the first bolt (10); The limiting plate (6) has a vertically arranged adjustment hole (61); The second cutter (43) has a threaded hole (45); The first bolt (10) passes through the adjustment hole (61) and is inserted into the threaded hole (45) to install the limiting plate (6) onto the second cutter (43).

6. The wire shearing mechanism according to claim 4, characterized in that: The top surface of the second blade (44) is set horizontally; The bottom surface of the first blade (34) is set at an angle of 1°-3° with the top surface of the second blade (44).

7. The wire shearing mechanism according to claim 4, characterized in that: The first cutting blades (33) on the left and right sides of the first blade (34) have first limiting surfaces (36); The second cutting blades (43) on the left and right sides of the second blade (44) have second limiting surfaces (46); The first limiting surface (36) is located directly above the second limiting surface (46).

8. The wire shearing mechanism according to claim 4, characterized in that: The second cutting blade (43) on the rear side of the second blade (44) has a downwardly inclined bevel (47).

9. The wire shearing mechanism according to claim 4, characterized in that: It also includes a collection box (11) and a waste collection cover (12); The collection box (11) is placed on the mounting frame (2); The waste collection hood (12) is fixed to the second knife holder (42) and located on the rear side of the second cutter (43); The discharge port of the waste collection hood (12) is located above the collection box (11).

10. The wire shearing mechanism according to claim 2, characterized in that: It also includes a mounting base (13), a nut (14), a second bolt (15), a pressure block (16), and a second spring (17); The mounting base (13) is fixed to the first tool holder (32); The nut (14) is fixed to the front end of the mounting base (13); The bottom end of the second bolt (15) passes through the nut (14) and extends to a pressure block (16) fixed below the nut (14); The pressure block (16) is located above the lower cutter assembly (4); The bottom end of the second spring (17) is connected to the pressure block (16), and the top end of the second spring (17) is connected to the nut (14).

11. The wire shearing mechanism according to claim 4, characterized in that: It also includes guide rails (18); The first tool holder (32) and the second tool holder (42) are both slidably connected to the guide rail (18).

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