Hot cut-off machine

Abstract

The utility model discloses a hot cut-off machine, which belongs to the technical field of stamping and blanking equipment, and comprises a crankshaft, a blanking structure, a heating pressing block and a cutting board, the crankshaft is in transmission connection with a motor through a speed reducer, and the crankshaft is hinged with the blanking structure through a connecting rod hinged on a shaft body. Due to the fact that the conductive base is arranged below the heating pressing block and the conductive coil is arranged in the heating pressing block, in the rotation process of the crankshaft, the heating pressing block moves downwards and can make contact with the conductive base, the conductive base can be connected with the heating pressing block, and high-frequency current is released to enter the conductive coil, so that the heating pressing block is heated, and the heating pressing block is heated. The metal material is subjected to induction heating, at the moment, the metal material is located on the cutting board below the heating pressing block, the cutting board is installed at the upper end of the conductive base and is aligned with the heating pressing block, finally, the blanking structure penetrates through the heating pressing block to punch a workpiece on the cutting board, and forming treatment of the metal material is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping and blanking equipment, in particular to a thermal cutting machine. Background Art

[0002] Blanking (shearing) processing is a stamping process that uses a stamping machine to pressurize the material between the punch and the die, causing shear deformation and separation at the cutting edge with a certain gap. This process is used to shear the material, which has the advantages of fast shearing speed, neat fracture and small deformation.

[0003] However, this method is not suitable for materials with thicker walls or higher strength. Not only does it require the stamping machinery to have a higher output power, but the strength and toughness of the punching tools also need to be strengthened. In addition, high-intensity pressure can easily cause cracks in the material, affecting the quality of the product.

[0004] To this end, the applicant proposed a new technical solution, using hot stamping technology to transform the original equipment to reduce the company's equipment procurement costs. Utility Model Content

[0005] To this end, the utility model provides a thermal cutting machine to solve the problem in the prior art that the material is difficult to cut due to the high thickness and strength of the material.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model discloses a thermal cut-off machine, which is driven by a power device through a reducer to operate the equipment, and comprises:

[0008] A crankshaft, on which a connecting rod is hingedly arranged;

[0009] A punching structure, the top of which is hinged to the end of the connecting rod, and the punching structure is vertically inserted with a plurality of parallel guide limit rods and is suitable for sliding along the guide limit rods;

[0010] A heating block, the top of which is fixedly connected to the ends of the plurality of guide limit rods, a conductive base is provided below the heating block, and the conductive base is suitable for being connected to the heating block and releasing high-frequency current;

[0011] An anvil is mounted on the upper end of the conductive base and aligned with the heating block. The punching structure is suitable for punching the workpiece on the anvil through the heating block.

[0012] Furthermore, the punching structure includes:

[0013] The knife seat has a hinge seat on the top and a guide hole vertically arranged thereon;

[0014] The front end of the knife handle is fixedly installed at the bottom of the knife seat, and the rear end is provided with a punching tool.

[0015] Further, including:

[0016] The top of the block is screwed and fixed to the end of the guide limit rod, and the bottom of the block is provided with a pressing groove;

[0017] The conductive coil is arranged inside the block. A feed groove is arranged through the middle of the block. The feed groove is communicated with the pressing groove, and the tool handle is suitable for entering the pressing groove through the feed groove.

[0018] Further, the feed slot intersects with the conductive coil and cuts off the conductive coil, and the handle is provided with a conductor;

[0019] When the tool holder is located in the feed slot, the conductive coil is switched on through the conductor;

[0020] When the tool handle passes through the feed slot and enters the pressing slot, the conductive coil is disconnected.

[0021] Furthermore, a heat dissipation channel is provided in the cutting board, and the heat dissipation channel is suitable for passing coolant or compressed air.

[0022] Furthermore, the conductive base includes a socket, wiring terminals and a frequency converter, the anvil is installed at the center of the socket, two rows of wiring terminals are arranged in series on both sides of the socket, the two rows of wiring terminals are suitable for connecting to the conductive coil and a frequency converter is arranged between the two rows of wiring terminals.

[0023] Furthermore, the guide limit rod comprises a guide rod, a limit ring and a spring, and a limit ring is arranged at the end of the guide rod, and the limit ring is suitable for abutting against the top of the knife seat;

[0024] A spring is sleeved on the guide rod, one end of the spring abuts against the bottom of the knife seat, and the other end of the spring abuts against the block.

[0025] The utility model has the following advantages:

[0026] The thermal cutting machine disclosed in the utility model adopts a hot stamping process. During the downward movement of the blanking structure, a conductive coil is first used to perform high-frequency induction heating on the metal material to quickly soften it, and then the tool is driven by the tool rod to cut the material. Compared with the prior art that adopts a cold stamping process to blank the blank, the technical solution can effectively reduce the wear on the tool and is very suitable for blanking and cutting high-strength and thick materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0028] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0029] Figure 1 A three-dimensional diagram of the thermal cut-off machine provided by the utility model;

[0030] Figure 2 A three-dimensional diagram of the punching structure provided by the utility model;

[0031] Figure 3 A three-dimensional diagram of the conductive base provided by the utility model;

[0032] Figure 4 A three-dimensional diagram of a cutting board provided by the utility model;

[0033] Figure 5 A three-dimensional diagram of the heating block provided by the utility model;

[0034] Figure 6 A three-dimensional diagram of the guide limit rod provided by the utility model;

[0035] In the figure: 1 crankshaft; 2 connecting rod; 3 blanking structure; 31 tool holder; 32 hinge seat; 33 tool handle; 4 guide limit rod; 5 heating block; 51 block; 52 conductive coil; 53 pressing groove; 54 feed groove; 6 conductive base; 61 card seat; 62 terminal; 63 inverter; 7 anvil plate; 8 heat dissipation channel. DETAILED DESCRIPTION

[0036] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Please refer to Figure 1-Figure 6 The utility model discloses a thermal cutting machine, which is driven by a power device through a reducer, and adopts a hot stamping process to firstly perform high-frequency induction heating on the metal material to reduce its strength, and then perform blanking on the material. The specific description is as follows:

[0038] like Figure 1 In a specific embodiment disclosed in the utility model, the main structure of the thermal cutting machine includes a crankshaft 1, a punching structure 3, a heating block 5 and an anvil 7. The crankshaft is connected to the motor through a reducer. The crankshaft 1 is hinged to the punching structure 3 through a connecting rod 2 hinged on the shaft. Since a number of parallel guide limit rods 4 are vertically inserted on the punching structure 3, when the crankshaft 1 rotates, the punching structure 3 slides back and forth along the direction of the guide limit rods 4. The ends of the guide limit rods 4 are fixedly connected to the top of the heating block 5. A conductive base 6 is provided below the heating block 5. A conductive coil 52 is provided inside the heating block 5. During the rotation of the crankshaft 1, when the heating block 5 moves down and contacts the conductive base 6, the conductive base 6 can be connected to the heating block 5 and release high-frequency current into the conductive coil 52 to induction heat the metal material. At this time, the metal material is located on the anvil 7 below the heating block 5, and the anvil 7 is installed on the upper end of the conductive base 6 and aligned with the heating block 5. Finally, the punching structure 3 passes through the heating block 5 to punch the workpiece on the anvil 7, completing the punching process of the metal material.

[0039] In this embodiment, if Figure 2 The punching structure 3 includes a knife seat 31 and a knife handle 33, wherein the knife handle 33 is vertically fixed at the bottom of the knife seat 31, and a guide hole 34 is vertically arranged on the knife seat 31 to cooperate with the guide limit rod 4. A punching tool 35 is arranged at the tail end of the knife handle 33. During the material forming process, the knife handle 33 drives the punching tool 35 to pass through the heating block 5 and directly punch the material to cut it.

[0040] In some embodiments, Figure 5 The heating block 5 includes a block 51 and a conductive coil 52. The block 51 is made of high temperature resistant material, such as ceramic or tungsten alloy. The top of the block 51 is screwed and fixed to the end of the guide limit rod 4, so that the block 51 can float up and down by being pulled by the guide limit rod 4. A pressing groove 53 is provided at the bottom of the block 51, and the anvil 7 is located in the pressing groove 53. On this basis, the conductive coil 52 is encapsulated inside the block 51, and the feed groove 54 provided through the middle of the block 51 can cut off the conductive coil 52, the feed groove 54 is connected to the pressing groove 53, and the handle 33 is suitable for entering the pressing groove 53 through the feed groove 54.

[0041] In this embodiment, if Figure 2 and Figure 5The knife handle 33 is provided with a conductor, which can be connected to the conductive coil 52, so that the conductive coil 52 can form a path. Therefore, when the knife handle 33 is located in the feed slot 54, the conductive coil 52 is connected through the conductor, and when the knife handle 33 passes through the feed slot 54 and enters the pressing slot 53, the conductive coil 52 is disconnected. Therefore, when punching the material, the conductive coil 52 can be automatically disconnected, and the metal material will not continue to heat up, thereby avoiding the induction heating of the knife handle by the magnetic field, which causes the knife handle 33 to be heated and stressed and softened and deformed.

[0042] In this embodiment, if Figure 4 A heat dissipation channel 8 is provided in the anvil 7, and the heat dissipation channel 8 is suitable for passing coolant or compressed air, so that the workpiece material can be quickly cooled by air cooling or liquid cooling. In terms of metal heat treatment, it helps the metal to undergo martensite (or bainite) transformation, thereby improving the material strength of the workpiece.

[0043] In this embodiment, if Figure 3 The conductive base 6 includes a holder 61, a terminal block 62 and a frequency converter 63. The anvil 7 is installed at the center of the holder 61. Two rows of terminal blocks 62 connected in series are arranged on both sides of the holder 61. The two rows of terminal blocks 62 are suitable for being connected to the conductive coil 52 and a frequency converter 63 is arranged between the two rows of terminal blocks 62. The frequency converter 63 is used to adjust the frequency of the current input into the conductive coil 52, thereby adjusting the heating temperature of the material.

[0044] In this embodiment, if Figure 6 The guide limit rod 4 includes a guide rod 41, a limit ring 42 and a spring 43. The end of the guide rod 41 is provided with a limit ring 42, and the limit ring 42 is suitable for abutting against the top of the knife seat 31. The guide rod 41 cooperates with the guide hole 34. At the same time, the block 51 can be lifted up on the knife seat 3 by using the limit ring 42, so as to feed the new blank into the device. The guide rod 41 is sleeved with a spring 43, one end of the spring 43 abuts against the bottom of the knife seat 31, and the other end abuts against the block 51. The elastic force of the spring can effectively press the workpiece, thereby further improving the heating effect.

[0045] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A thermal cut-off machine, which is driven by a power device through a reducer, characterized in that: include: A crankshaft (1) having a connecting rod (2) hingedly arranged on the shaft body; A punching structure (3) whose top is hinged to the end of the connecting rod (2), and a plurality of parallel guide limit rods (4) are vertically inserted into the punching structure (3) and are suitable for sliding along the guide limit rods (4); A heating block (5) having a top fixedly connected to the ends of the plurality of guide limit rods (4), a conductive base (6) being arranged below the heating block (5), the conductive base (6) being suitable for being connected to the heating block (5) and releasing a high-frequency current; The anvil (7) is mounted on the upper end of the conductive base (6) and aligned with the heating block (5), and the punching structure (3) is suitable for punching the workpiece on the anvil (7) through the heating block (5).

2. The thermal cut-off machine according to claim 1, characterized in that: The punching structure (3) comprises: A knife seat (31) is provided with a hinge seat (32) on the top and a guide hole (34) vertically arranged thereon; The knife handle (33) has a head end fixedly mounted on the bottom of the knife seat (31), and a cutting tool (35) is arranged at the tail end.

3. The thermal cut-off machine according to claim 2, characterized in that: include: The top of the block (51) is screwed and fixed to the end of the guide limit rod (4), and the bottom of the block (51) is provided with a pressing groove (53); A conductive coil (52) is arranged inside the block (51); a feed groove (54) is provided through the middle of the block (51); the feed groove (54) is communicated with the pressing groove (53), and the tool handle (33) is suitable for entering the pressing groove (53) through the feed groove (54).

4. The thermal cut-off machine according to claim 3, characterized in that: The feed groove (54) intersects with the conductive coil (52) and cuts off the conductive coil (52), and a conductor is provided on the knife handle (33); When the tool handle (33) is located in the feed slot (54), the conductive coil (52) is connected via the conductor; When the knife handle (33) passes through the feed groove (54) and enters the pressing groove (53), the conductive coil (52) is disconnected.

5. The thermal cut-off machine according to claim 4, characterized in that: The anvil (7) is provided with a heat dissipation channel (8), and the heat dissipation channel (8) is suitable for passing cooling liquid or compressed air.

6. The thermal cut-off machine according to claim 4, characterized in that: The conductive base (6) comprises a card base (61), a wiring terminal (62) and a frequency converter (63); the anvil (7) is mounted at the center of the card base (61); two rows of wiring terminals (62) connected in series are arranged on both sides of the card base (61); the two rows of wiring terminals (62) are suitable for being connected to the conductive coil (52); and a frequency converter (63) is arranged between the two rows of wiring terminals (62).

7. The thermal cut-off machine according to claim 5, characterized in that: The guide limiting rod (4) comprises a guide rod (41), a limiting ring (42) and a spring (43); a limiting ring (42) is arranged at the end of the guide rod (41); the limiting ring (42) is suitable for abutting against the top of the knife seat (31); A spring (43) is sleeved on the guide rod (41), one end of the spring (43) abuts against the bottom of the knife seat (31), and the other end of the spring (43) abuts against the block (51).

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