A cutting apparatus for spring machining

Abstract

This utility model relates to the field of spring processing technology and discloses a cutting device for spring processing, including a base plate. A support is welded to one side of the top of the base plate. A cam is rotatably provided inside the support. Several rollers are rotatably connected to the surface of the cam. An electric motor that drives the cam is fixedly installed at the top of the support. A sliding tool holder is slidably connected to the other side of the top of the base plate. A cutting tool is engaged inside the sliding tool holder. The cam is driven to rotate by the electric motor. When the cam's protruding part rotates to the spring return mechanism, the spring return mechanism can apply pressure to the sliding tool holder, thereby causing the cutting tool to cut the produced spring. The rollers can reduce the friction between the cam and the spring return mechanism. After the cam's protruding part leaves the spring return mechanism, the spring return mechanism can reset the sliding tool holder. One rotation of the cam can complete one cutting operation.

Description

Technical Field

[0001] This utility model relates to the field of spring processing technology, specifically a cutting device for spring processing. Background Technology

[0002] The working principle of a spring machine (also known as a coiling spring machine) is to precisely feed the wire to the forming area through a feeding mechanism, and then complete the spiral bending with the help of a winding system (mandrel, guide plate and cutter). The feeding wheel pushes the wire forward, while the mandrel rotates and moves up and down or left and right with the cutter to control the diameter, pitch and number of turns of the spring. The control system coordinates the timing of each action to realize the automated processing of springs of different shapes. Finally, the cutting mechanism completes the fixed-length separation.

[0003] Traditional spring cutters are mostly hydraulically driven. The hydraulic system requires the oil pump to run continuously to maintain pressure. Actual tests show that only 25%-40% of the energy is used for actual cutting, while more than 60% of the energy is wasted in pipeline pressure drop, oil heating and other aspects. The hydraulic cylinder action depends on the flow of oil. There is a 50-200ms delay from the signal to the piston starting. This leads to limited cycle time during high-speed production, and the cost of use and maintenance is high.

[0004] Therefore, a high-efficiency and low-cost spring-cutting device is needed. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a cutting device for spring processing, which has the advantages of being less prone to delays and reducing costs, thus solving the problems mentioned in the background art.

[0006] This utility model provides the following technical solution: a cutting device for spring processing, including a base plate, a support welded to one side of the top of the base plate, a cam rotatably provided inside the support, a plurality of rollers rotatably connected to the surface of the cam, a motor for driving the cam fixedly installed at the top of the support, a sliding tool holder slidably connected to the other side of the top of the base plate, a tool being engaged inside the sliding tool holder, a limiting mechanism for locking the tool at the top of the sliding tool holder, and a springback mechanism for controlling its springback on one side of the sliding tool holder.

[0007] As a preferred embodiment of this utility model, a support shaft is fixedly provided in the middle of the cam, the bottom of the support shaft is rotatably connected to the base plate, the top of the support shaft is rotatably connected to the support, and the output shaft of the motor is fixedly connected to the top of the support shaft.

[0008] As a preferred embodiment of this utility model, the surface of the base plate is provided with mounting holes for mounting thereon, and a track is fixedly provided on the other side of the top of the base plate. A guide block is fixedly connected to the middle of the bottom end of the sliding knife holder, and the guide block is slidably connected to the track.

[0009] As a preferred technical solution of this utility model, the limiting mechanism includes a bracket, the bottom end of the bracket is fixedly connected to the top end of the sliding tool holder, a limiting rod for limiting the tool is slidably connected to the middle of the top end of the bracket, a limiting spring is sleeved on the surface of the limiting rod, a pressure plate is fixedly provided at the bottom of the limiting rod, and the limiting spring is located between the pressure plate and the bracket.

[0010] As a preferred embodiment of this utility model, a stop block is fixedly provided at the top of the limiting rod, and an operating port is provided on both sides of the stop block.

[0011] As a preferred technical solution of this utility model, the top of the sliding tool holder is provided with a telescopic opening, the limiting rod is slidably connected to the inside of the telescopic opening, a limiting groove is provided on one side of the top of the tool, and the bottom of the limiting rod is engaged with the inside of the limiting groove.

[0012] As a preferred embodiment of this utility model, the rebound mechanism includes a vertical frame and a push plate. The bottom end of the vertical frame is fixedly connected to the middle of the top end of the base plate. Two guide rings are fixedly installed on both sides of the vertical frame. Two telescopic rods are slidably connected to the vertical frame through the guide rings. One end of the telescopic rod is fixedly connected to the sliding knife seat, and the other end of the telescopic rod is fixedly connected to the push plate.

[0013] As a preferred embodiment of this utility model, a return spring is provided between the push plate and the upright frame. Both ends of the return spring are engaged with locking posts. One end of one locking post is fixedly connected to the middle of one side of the push plate, and the other end of the locking post is fixedly connected to the upright frame.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The cam is driven to rotate by an electric motor. When the cam's convex part rotates to the spring return mechanism, it can apply pressure to the sliding tool holder through the spring return mechanism, which can cause the tool to cut the spring produced. The roller can reduce the friction between the cam and the spring return mechanism. After the cam's convex part leaves the spring return mechanism, the spring return mechanism can reset the sliding tool holder. One rotation of the cam can complete one cutting activity. When the cam rotates continuously, it can cause the tool to extend and retract continuously, which can ensure the continuous operation of the tool. There is no need for a hydraulic cylinder as a driving component, which is less likely to cause delays and reduces production and maintenance costs.

[0016] 2. The spring-loaded assembly and sliding tool holder guide the tool, preventing it from easily deviating and ensuring good precision. The limiting mechanism fixes the tool on the sliding tool holder, enabling boltless installation, facilitating tool disassembly and replacement, and maintaining tool stability. Attached Figure Description

[0017] Figure 1 This is one of the structural schematic diagrams of this utility model;

[0018] Figure 2 This is the second structural schematic diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the cam of this utility model;

[0021] Figure 5 This is a schematic diagram of the limiting mechanism of this utility model;

[0022] Figure 6 This is a schematic diagram of the springback mechanism of this utility model.

[0023] In the diagram: 1. Base plate; 2. Support; 3. Motor; 4. Cam; 5. Support shaft; 6. Roller; 7. Sliding tool holder; 8. Tool; 9. Limiting mechanism; 901. Bracket; 902. Limiting rod; 903. Limiting spring; 904. Pressure plate; 905. Stop block; 906. Operating port; 10. Telescopic port; 11. Limiting groove; 12. Guide block; 13. Track; 14. Mounting hole; 15. Rebound mechanism; 1501. Vertical frame; 1502. Telescopic rod; 1503. Push plate; 1504. Guide ring; 1505. Return spring; 1506. Locking post. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-6A cutting device for spring processing includes a base plate 1. A support 2 is welded to one side of the top of the base plate 1. A cam 4 is rotatably mounted inside the support 2. Several rollers 6 are rotatably connected to the surface of the cam 4. A motor 3 that drives the cam 4 is fixedly mounted on the top of the support 2. A sliding cutter holder 7 is slidably connected to the other side of the top of the base plate 1. A cutter 8 is engaged inside the sliding cutter holder 7. A limiting mechanism 9 that locks the cutter 8 is provided at the top of the sliding cutter holder 7. A spring-returning mechanism 15 that controls the spring-returning is provided on one side of the sliding cutter holder 7. The cam 4 is driven to rotate by the motor 3. When the protruding part of the cam 4 rotates to the spring-returning mechanism 15, it can apply pressure to the sliding cutter holder 7 through the spring-returning mechanism 15, so that the cutter 8 can cut the produced spring. After the protruding part of the cam 4 leaves the spring-returning mechanism 15, the spring-returning mechanism 15 can reset the sliding cutter holder 7. One rotation of the cam 4 can complete one cutting activity. When the cam 4 rotates continuously, it can make the cutter 8 extend and retract continuously, which can ensure the continuous operation of the cutter 8 without the need for a hydraulic cylinder as a driving component.

[0026] In this embodiment, preferably, the limiting mechanism 9 includes a bracket 901. The bottom end of the bracket 901 is fixedly connected to the top end of the sliding tool holder 7. A limiting rod 902 for limiting the tool 8 is slidably connected to the middle of the top end of the bracket 901. A limiting spring 903 is sleeved on the surface of the limiting rod 902. A pressure plate 904 is fixedly provided at the bottom of the limiting rod 902. The limiting spring 903 is located between the pressure plate 904 and the bracket 901. A stop block 905 is fixedly provided at the top end of the limiting rod 902. Operating ports 906 are opened on both sides of the stop block 905. A telescopic port 10 is opened at the top end of the sliding tool holder 7. The limiting rod 902 is slidably connected to the inside of the telescopic port 10. One side of the top end of the tool 8 is opened... A limiting groove 11 is provided, and the bottom of the limiting rod 902 is engaged with the inside of the limiting groove 11. The limiting rod 902 can be lifted by vertically lifting the stop block 905 through the operating port 906. The pressure plate 904 at the bottom of the limiting rod 902 can compress the limiting spring 903. After the limiting rod 902 is lifted, it is easy to push the tool 8 into the interior of the sliding tool holder 7. By releasing the stop block 905, the limiting spring 903 can push the pressure plate 904 to reset, and the bottom end of the limiting rod 902 can be pushed into the limiting groove 11 through the telescopic port 10, thereby locking the tool 8. This realizes the boltless installation of the tool 8, which is convenient for replacing the tool 8 and can maintain the stability of the tool 8, making the tool 8 less prone to loosening.

[0027] In this embodiment, preferably, the rebound mechanism 15 includes a vertical frame 1501 and a push plate 1503. The bottom end of the vertical frame 1501 is fixedly connected to the middle of the top end of the base plate 1. Two guide rings 1504 are fixedly installed on both sides of the vertical frame 1501. Two telescopic rods 1502 are slidably connected to the vertical frame 1501 through the guide rings 1504. One end of the telescopic rod 1502 is fixedly connected to the sliding knife holder 7, and the other end of the telescopic rod 1502 is fixedly connected to the push plate 1503. A space is provided between the push plate 1503 and the vertical frame 1501. There is a return spring 1505, and both ends of the return spring 1505 are engaged with locking pins 1506. One end of one locking pin 1506 is fixedly connected to the middle of one side of the push plate 1503, and one end of the other locking pin 1506 is fixedly connected to the upright frame 1501. When the cam 4 rotates, the push plate 1503, the telescopic rod 1502 and the sliding tool holder 7 can push the tool 8 to move horizontally, which can cut the formed spring. After the push of the tool 8 stops, the setting of the return spring 1505 can reset the tool 8.

[0028] In this embodiment, preferably, a support shaft 5 is fixedly provided in the middle of the cam 4, the bottom of the support shaft 5 is rotatably connected to the base plate 1, the top of the support shaft 5 is rotatably connected to the support 2, and the output shaft of the motor 3 is fixedly connected to the top of the support shaft 5. The support shaft 5 can provide support for the cam 4, and the cam 4 can rotate when the motor 3 drives the support shaft 5.

[0029] In this embodiment, preferably, the surface of the base plate 1 is provided with mounting holes 14 for mounting thereon, and a rail 13 is fixedly provided on the other side of the top of the base plate 1. A guide block 12 is fixedly connected to the middle of the bottom of the sliding cutter holder 7. The guide block 12 is slidably connected to the rail 13. The base plate 1 can be mounted on the spring machine through the mounting holes 14, and the sliding cutter holder 7 can be guided by the guide block 12 and the rail 13, which can ensure the linear movement of the sliding cutter holder 7.

[0030] In use, the base plate 1 is first installed on the spring machine through the mounting hole 14. After the spring machine processes and shapes the spring, the cam 4 is driven to rotate by the motor 3. When the protruding part of the cam 4 rotates to the return mechanism 15, the push plate 1503, telescopic rod 1502 and sliding cutter 7 of the return mechanism 15 can push the cutter 8 to move horizontally and compress the return spring 1505. The formed spring can then be cut by the cutter 8. The roller 6 can reduce the friction between the cam 4 and the push plate 1503.

[0031] After the protruding part of the cam 4 leaves the spring return mechanism 15, the reset spring 1505 can reset the tool 8. The cam 4 can complete one cutting activity by rotating one revolution. When the cam 4 rotates continuously, the tool 8 can extend and retract continuously, which can ensure the continuous operation of the tool 8 and prevent delays. It can continuously cut the formed spring. The extension rod 1502 and the track 13 can guide the sliding tool holder 7 and prevent it from deviating, thus ensuring the accuracy of the tool 8.

[0032] When the cutting tool 8 needs to be replaced, it can be lifted through the operating port 906 of the stop block 905, which can drive the limit rod 902 to rise. The pressure plate 904 at the bottom of the limit rod 902 can compress the limit spring 903. After the limit rod 902 is lifted, it can be separated from the cutting tool 8. Then, the replacement cutting tool 8 is pushed into the interior of the sliding tool holder 7. Then, the stop block 905 is released, and the limit spring 903 can push the pressure plate 904 to reset. The bottom end of the limit rod 902 can be pushed into the limit groove 11 through the telescopic port 10, which can lock the cutting tool 8 and realize the boltless installation of the cutting tool 8.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cutting apparatus for spring machining, comprising a base plate (1), characterized in that: A support (2) is welded to one side of the top of the base plate (1). A cam (4) is rotatably provided inside the support (2). Several rollers (6) are rotatably connected to the surface of the cam (4). A motor (3) for driving the cam (4) is fixedly installed at the top of the support (2). A sliding tool holder (7) is slidably connected to the other side of the top of the base plate (1). A tool (8) is engaged inside the sliding tool holder (7). A limiting mechanism (9) for locking the tool (8) is provided at the top of the sliding tool holder (7). A springback mechanism (15) for controlling the springback is provided on one side of the sliding tool holder (7).

2. The cutting device for spring processing according to claim 1, characterized in that: The cam (4) is fixedly provided with a support shaft (5) in the middle. The bottom of the support shaft (5) is rotatably connected to the base plate (1). The top of the support shaft (5) is rotatably connected to the support (2). The output shaft of the motor (3) is fixedly connected to the top of the support shaft (5).

3. The cutting apparatus for spring machining according to claim 1, characterized by: The base plate (1) has mounting holes (14) for mounting on its surface. A track (13) is fixedly provided on the other side of the top of the base plate (1). A guide block (12) is fixedly connected to the middle of the bottom of the sliding knife holder (7). The guide block (12) is slidably connected to the track (13).

4. The cutting apparatus for spring machining according to claim 1, characterized by: The limiting mechanism (9) includes a bracket (901), the bottom end of which is fixedly connected to the top end of the sliding tool holder (7). A limiting rod (902) for limiting the tool (8) is slidably connected to the middle of the top end of the bracket (901). A limiting spring (903) is sleeved on the surface of the limiting rod (902). A pressure plate (904) is fixedly provided at the bottom of the limiting rod (902). The limiting spring (903) is located between the pressure plate (904) and the bracket (901).

5. The cutting apparatus for spring machining according to claim 4, characterized in that: The top of the limiting rod (902) is fixedly provided with a stop (905), and both sides of the stop (905) are provided with operating ports (906).

6. The cutting apparatus for spring machining according to claim 4, characterized by: The top of the sliding tool holder (7) is provided with a telescopic opening (10), the limiting rod (902) is slidably connected to the inside of the telescopic opening (10), and a limiting groove (11) is provided on one side of the top of the tool (8), and the bottom of the limiting rod (902) is engaged with the inside of the limiting groove (11).

7. The cutting apparatus for spring machining according to claim 1, characterized by: The rebound mechanism (15) includes a vertical frame (1501) and a push plate (1503). The bottom end of the vertical frame (1501) is fixedly connected to the middle of the top of the base plate (1). Two guide rings (1504) are fixedly installed on both sides of the vertical frame (1501). Two telescopic rods (1502) are slidably connected to the vertical frame (1501) through the guide rings (1504). One end of the telescopic rod (1502) is fixedly connected to the sliding knife seat (7), and the other end of the telescopic rod (1502) is fixedly connected to the push plate (1503).

8. The cutting apparatus for spring machining according to claim 7, characterized in that: A return spring (1505) is provided between the push plate (1503) and the upright frame (1501). Both ends of the return spring (1505) are engaged with a locking post (1506). One end of one locking post (1506) is fixedly connected to the middle of one side of the push plate (1503), and the other end of the locking post (1506) is fixedly connected to the upright frame (1501).

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