A cutting tool and a snap ring forming apparatus

Abstract

This utility model discloses a cutting tool and a spring ring forming equipment. The cutting tool includes a base that can be fixedly connected to the shaft of a spring machine. The base has a discharge port for wire to extend from. At least two vertically movable guide posts and a vertically movable cutter are connected to the base. The tops of the guide posts and the cutter are fixedly connected to a top block. Each guide post is fitted with an elastic element at both ends that abut against the top block and the base respectively. When the top block is in its highest position due to the elastic element, the cutting edge of the cutter is close to the discharge port. In use, the base is fixedly connected to the shaft of the spring machine. After the wire exits from the discharge port and is processed, the sliding seat of the spring machine pushes the top block. Guided by the guide posts, the top block pushes the cutter to cut the wire. Due to the design of separating the cutter from the sliding seat, the cutter can be made shorter. Combined with the guiding effect of the guide posts, the rigidity can be greatly improved, and the flatness of the cut can be improved.

Description

Technical Field

[0001] This utility model relates to the field of spring manufacturing parts, and more specifically, to a cutting tool. This utility model also relates to snap ring forming equipment. Background Technology

[0002] Current snap rings are generally manufactured using CNC spring machines. These machines have multiple sliding seats, each holding different types of forming dies. Through a series of coordinated actions, wire extending smoothly and continuously from the shaft is bent into the snap ring shape. After bending, a cutting tool is used for cutting. Currently, snap rings are cut by mounting a tool on the sliding seat, which directly pushes the tool to cut the wire near the shaft. However, for snap rings requiring high rigidity and using wide, high-strength wire, directly pushing the tool with the sliding seat results in a longer tool with insufficient rigidity, leading to misalignment, uneven cuts, and poor performance. Utility Model Content

[0003] In view of the shortcomings of the prior art, the present invention provides a cutting tool with stronger limiting and higher tool rigidity.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] A cutting tool includes a base that can be fixedly connected to the shaft of a spring machine. The base has a discharge port for wire to extend out. At least two vertically movable guide posts and a vertically movable cutter are connected to the base. The tops of the guide posts and the cutter are fixedly connected to a top block. Each guide post is fitted with an elastic element at both ends that abut against the top block and the base respectively. When the elastic element causes the top block to be in its highest position, the cutting edge of the cutter is close to the discharge port.

[0006] Furthermore, the guide pillars are four in number and arranged in a square array.

[0007] Furthermore, the front end face of the base is provided with a guide groove in the vertical direction and the guide groove is located between the two front guide posts. The cutter is connected in the guide groove and the discharge port is located on the bottom surface of the guide groove.

[0008] Furthermore, both sides of the guide groove are provided with protrusions extending towards the middle, and the protrusions on both sides are symmetrical. The cutter has grooves on both sides that respectively cooperate with the two protrusions.

[0009] A snap ring forming equipment includes a mounting plate for a spring machine, and a first sliding seat, a second sliding seat, and a third sliding seat disposed on the mounting plate. A cutting tool as described in any of the above technical solutions is fixedly connected in the middle of the mounting plate. The desired discharge port is connected to the shaft core. The first and second sliding seats are respectively provided with a first forming mold and a second forming mold for bending the wire against the two opposing surfaces. The third sliding seat is provided with a push block for pushing the top block to move.

[0010] Furthermore, it also includes a fourth sliding seat, which is provided with a limiting mold for limiting the wire before bending and forming.

[0011] Furthermore, the end of the limiting mold is provided with a C-shaped opening, the internal shape of which is adapted to the wire.

[0012] Furthermore, the end of the first molding die is a cylinder, and the end of the second molding die is provided with a roller, and the axial direction of the roller is parallel to the axial direction of the cylinder.

[0013] In summary, the beneficial effects of this utility model are as follows: During use, the base is fixedly connected to the shaft of the spring machine. After the wire exits the discharge port and completes processing, the sliding seat of the spring machine pushes the top block. Guided by the guide post, the top block pushes the cutter to cut the wire. Because of the design that separates the cutter from the sliding seat, the cutter can be made shorter. Combined with the guiding effect of the guide post, this greatly improves rigidity and the smoothness of the cut. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the cutting tool of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the snap ring forming equipment of this utility model;

[0016] Figure 3 yes Figure 2 An enlarged view of point A;

[0017] Figure 4 This is a three-dimensional structural diagram of a retaining ring.

[0018] The labels in the attached diagram are as follows:

[0019] Cutting tool 1; base 11; flange 111; discharge port 12; guide post 13; cutter 14; groove 141; elastic element 15; guide groove 16; protrusion 161; top block 17; snap ring 10; mounting plate 20; first sliding seat 30; second sliding seat 40; third sliding seat 50; first forming mold 100; second forming mold 200; limiting mold 300. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to that other component.

[0022] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] like Figure 1 The cutter shown includes a base 11 with a flange 111 on it, which can be fixedly connected to the spring machine shaft core by screws. The base 11 has a discharge port 12. After installation, the discharge port 12 is aligned with the shaft core, and the wire comes out of the shaft core and then extends out of the discharge port 12.

[0025] The base 11 is fitted with guide posts 13 and cutters 14, both of which can move up and down. There are at least two guide posts 13, preferably four arranged in a square array. Of course, two, three, or more can be used. The tops of both guide posts 13 and cutters 14 are fixedly connected to a top block 17, which allows both guide posts 13 and cutters 14 to move simultaneously.

[0026] like Figure 1As shown, each guide post 13 is fitted with an elastic element 15. The elastic element 15 is a cylindrical spring, with its two ends abutting against the top block 17 and the base 11 respectively. Under the elastic force of the elastic element 15, the top block 17 will be in the highest position when there is no operation. At this time, the blade of the cutter 14 is close to the top of the discharge port 12 to avoid blocking the discharge port 12.

[0027] In one embodiment, such as Figure 1 As shown, a guide groove 16 extending vertically is provided at the front end face of the base 11. This guide groove 16 is located between the two front guide posts 13. The discharge port 12 is located on the bottom surface of the guide groove 16. The cutter 14 is connected to the guide groove 16. By setting the guide groove 16 to cooperate with the cutter 14, the cutter 14 can be further limited, improving its rigidity when cutting wire. Preferably, both sides of the guide groove 16 are provided with protrusions 161 extending towards the middle, and the protrusions 161 on both sides are symmetrical. The cutter 14 has grooves 141 on both sides that cooperate with the two protrusions 161 respectively. The cooperation of the protrusions 161 and the grooves 141 further improves the limiting effect.

[0028] As shown in Figure 4, the retaining ring 10 is formed by bending a rectangular wire into a loop, with overlap at both ends. This type of wire is wide and thick, resulting in high rigidity and making it prone to uneven cutting. Therefore, the aforementioned cutting tool 1 is required.

[0029] like Figure 2 and Figure 3 The spring ring forming equipment includes a spring machine mounting plate 20, a first sliding seat 30, a second sliding seat 40, and a third sliding seat 50. The first sliding seat 30, the second sliding seat 40, and the third sliding seat 50 are all mounted on the mounting plate 20. A cutter 14, as described above, is fixedly connected to the middle of the mounting plate 20. The discharge port 12 is connected to the shaft core. The first sliding seat 30 and the second sliding seat 40 are respectively provided with a first forming mold 100 and a second forming mold 200. The first forming mold 100 and the second forming mold 200 are respectively used to abut against the two opposite surfaces of the wire to bend and form the wire. The third sliding seat 50 is provided with a push block 501, which is used to push the top block 17 to move in order to cut the wire.

[0030] like Figure 2 As shown, the retaining ring forming equipment also includes a fourth sliding seat 60, on which a limiting mold 300 is provided. One end of the limiting mold 300 is fixedly connected to the fourth sliding seat 60, and the other end has a C-shaped opening. The internal shape of the C-shaped opening is adapted to the wire. When the wire extends from the discharge port 12, it first passes through the C-shaped opening, is limited by the C-shaped opening, and then is bent and formed, ensuring the overlap of the head and tail of the formed retaining ring and improving the forming quality.

[0031] In one embodiment, such as Figure 3 As shown, the end of the first molding die 100 is a cylinder, and the end of the second molding die 200 is provided with a roller, and the axial direction of the roller is parallel to the axial direction of the cylinder.

[0032] Specifically, such as Figure 2 As shown, the first sliding seat 30 is located at the three o'clock position of the mounting plate 20, the second sliding seat 40 is located between the ten o'clock and eleven o'clock positions of the mounting plate 20, the third sliding seat 50 is located at the twelve o'clock position, and the fourth sliding seat 60 is located at the nine o'clock position. During operation, the fourth sliding seat 60 drives the limiting mold 300, aligning the C-shaped opening at the end with the discharge port 12. The spring mechanism controls the wire output. After the wire extends from the discharge port 12, it passes through the C-shaped opening. At this time, the first sliding seat 30 and the second sliding seat 40 move simultaneously, driving the first forming mold 100 and the second forming mold 200 to abut against the upper and lower surfaces of the wire, respectively, causing the wire to continue to extend and bend. Finally, the third sliding seat 50 drives the push block 501 to push the top block 17, thereby causing the cutter 14 to cut the wire. The finished product falls off by itself, completing the entire forming operation.

[0033] The above embodiments are merely explanations of the present utility model and are not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to the embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present utility model.

Claims

1. A cutting tool, characterized by: The application relates to a spring machine, which comprises a base fixedly connected around a spring machine shaft core, a discharging port for wire extension is arranged on the base, at least two guide columns and a cutter capable of moving up and down are connected to the base, the top of the guide column and the cutter is fixedly connected with a top block, elastic members are arranged on the guide column, the two ends of the elastic members abut against the top block and the base respectively, and when the top block is at the highest position, the cutter blade is close to the discharging port.

2. A cutting tool according to claim 1, characterized in that: The guide column has four columns and is arranged in a square array.

3. A cutting tool according to claim 2, characterized in that: A guide groove is arranged on the front end surface of the base in the up-down direction, the guide groove is located between the two front guide columns, the cutter is connected to the guide groove, and the discharging port is located on the bottom surface of the guide groove.

4. A cutting tool according to claim 3, characterized in that: The two sides of the guide groove are provided with convex strips extending to the middle, the convex strips on the two sides are left-right symmetrical, and the cutter is provided with grooves on the two sides, which are matched with the two convex strips respectively.

5. A clasp ring forming apparatus comprising a mounting plate of a spring machine, and a first sliding seat, a second sliding seat and a third sliding seat provided on the mounting plate, characterized in that: The middle of the mounting plate is fixedly connected with the cutter tool, the discharging port is communicated with the shaft core, the first sliding seat and the second sliding seat are respectively provided with first and second forming dies for abutting against the wire relative to two surfaces to make the wire be bent and formed, and the third sliding seat is provided with a push block for pushing the top block to move.

6. The clasp ring forming apparatus of claim 5, wherein: The fourth sliding seat is further provided with a limiting die for limiting the wire before being bent and formed.

7. The clasp ring forming apparatus of claim 6, wherein: The end of the limiting die is provided with a C-shaped port, and the internal shape of the C-shaped port is matched with the wire.

8. The clasp ring forming apparatus according to any one of claims 5 to 7, characterized in that: The end of the first forming die is a cylinder, the end of the second forming die is provided with a roller, and the axis direction of the roller is parallel to the axis direction of the cylinder.

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