Surface strengthening device for die-casting die remanufacturing

Abstract

The utility model relates to the technical field of die remanufacturing, in particular to a surface strengthening device for die-casting die remanufacturing. According to the technical scheme, the surface strengthening device comprises a workbench, a mold base is arranged above the workbench, a fixing mechanism is arranged on the portion, located on the workbench, of the outer side of the mold base, a position adjusting mechanism is arranged outside the workbench, a surface strengthening mechanism is arranged on a second electric guide rail, and the surface strengthening mechanism comprises a plasma spraying assembly. A laser quenching assembly is arranged on one side of the plasma spraying assembly, and an ultrasonic impact assembly is arranged on the side, away from the plasma spraying assembly, of the second electric guide rail. According to the composite strengthening device, three surface strengthening modes of plasma spraying, laser quenching and ultrasonic impact are integrated, different strengthening modes or combinations can be selected according to the actual requirements of the die-casting die, composite strengthening of the surface of the die is achieved, and the comprehensive performance such as hardness, abrasion resistance, corrosion resistance and fatigue strength of the surface of the die is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of mold remanufacturing technology, and in particular to a surface strengthening device for remanufacturing die-casting molds. Background Technology

[0002] During long-term use, die-casting molds experience performance degradation due to wear, corrosion, and thermal fatigue, leading to mold failure. To improve mold lifespan and performance, and reduce production costs, remanufacturing failed die-casting molds has become an important method. Surface strengthening treatment is a key step in the die-casting mold remanufacturing process, as it can significantly improve the mold surface's hardness, wear resistance, corrosion resistance, and oxidation resistance.

[0003] Currently, common surface strengthening methods for die-casting molds include chemical vapor deposition (CVD), physical vapor deposition (PVD), and laser surface strengthening. However, these traditional surface strengthening methods have certain limitations. For example, CVD and PVD equipment are complex and costly, and the deposition process can easily generate environmental pollution; while laser surface strengthening is highly efficient, it has certain requirements on the shape and size of the mold, and the treated surface is prone to defects such as cracks. Furthermore, existing surface strengthening devices often have limited functionality, failing to meet the diverse performance strengthening needs of die-casting mold surfaces, and they struggle to achieve uniform treatment of the mold surface during the strengthening process, resulting in unsatisfactory strengthening effects. Therefore, we propose a surface strengthening device for die-casting mold remanufacturing. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a surface strengthening device for remanufacturing die-casting molds.

[0005] The technical solution of this utility model: A surface strengthening device for remanufacturing die-casting molds includes a worktable, a mold base is provided above the worktable, a fixing mechanism is provided on the outer side of the mold base on the worktable, the fixing mechanism includes an electric push rod located on one side of the mold base, the output end of the electric push rod is connected to an active clamping plate, a fixed clamping plate is provided on the side of the mold base away from the active clamping plate, a pressure sensor is provided on one side of the fixed clamping plate, a position adjustment mechanism is provided on the outside of the worktable, the position adjustment mechanism includes cylinders located at the four corners of the outer perimeter of the worktable, electric guide rails one is provided at the top of two sets of cylinders on the same side, electric guide rails two are arranged laterally between the two sets of electric guide rails one, a surface strengthening mechanism is provided on the electric guide rails two, the surface strengthening mechanism includes a plasma spraying component, a laser quenching component is provided on one side of the plasma spraying component, an ultrasonic impact component is provided on the side of the electric guide rails two away from the plasma spraying component, a column is provided on one side of the worktable, and an integrated central control panel is provided on the column.

[0006] Preferably, the mounting end of the mold base is installed corresponding to the upper side of the workbench, and a placement groove is provided on the upper side of the mold base.

[0007] Preferably, the mounting end of the electric push rod is installed corresponding to one side of the upper part of the worktable, one side of the active clamping plate is installed corresponding to the output end of the electric push rod, guide rods are provided on both sides of the electric push rod on the active clamping plate, two sets of limiting frames are provided on one side of the mold base on the worktable, the top end of the guide rod passes through the limiting frame and is installed corresponding to one side of the active clamping plate, the mounting end of the fixed clamping plate is installed corresponding to the upper part of the mold base away from the active clamping plate, the fixed clamping plate is provided with a mounting groove, and the mounting end of the pressure sensor is installed corresponding to the mounting groove.

[0008] Preferably, the mounting end of the cylinder is installed corresponding to the outer corner of the worktable, the mounting end of the first electric guide rail is installed corresponding to the output ends of the two sets of cylinders on the same side, the mounting end of the second electric guide rail is installed corresponding to the sliders on the two sets of first electric guide rails, and an assembly frame is provided on one side of the second electric guide rail.

[0009] Preferably, the plasma spraying assembly includes a powder feeder disposed on one side of the assembly frame, a plasma spray gun disposed on one side of the powder feeder, an air pump disposed above the powder feeder, and a height sensor disposed below the powder feeder.

[0010] Preferably, the laser quenching assembly includes a laser disposed on one side of the plasma spraying assembly, a laser focusing lens disposed on one side of the laser, a laser scanning galvanometer disposed at the top of the laser focusing lens, a temperature sensor disposed on one side of the worktable located on the mold base, and the ultrasonic impact assembly includes an ultrasonic generator disposed on the other side of the electric guide rail, an amplitude transformer disposed below the ultrasonic generator, and an impact head disposed at the top of the amplitude transformer.

[0011] Preferably, the mounting end of the column is installed corresponding to one side of the workbench, the mounting end of the integrated central control panel is installed corresponding to one side of the column, and the fixing mechanism, the position adjustment mechanism, and the surface strengthening mechanism are all electrically connected to the integrated central control panel.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects:

[0013] This invention integrates three surface strengthening methods: plasma spraying, laser quenching, and ultrasonic impact. It allows for the selection of different strengthening methods or combinations based on the actual needs of the die-casting mold, achieving composite strengthening of the mold surface. This significantly improves the overall performance of the mold surface, including hardness, wear resistance, corrosion resistance, and fatigue strength. Through the integrated central control panel and the coordinated use of pressure, temperature, and height sensors, various parameters during device operation can be monitored and controlled in real time, ensuring the accuracy and quality of the surface strengthening treatment and preventing poor strengthening effects or mold damage due to inaccurate parameters. The fixed mechanism can adapt to die-casting molds of different sizes and shapes, expanding the applicability of the device and meeting the diverse needs of customers for surface strengthening in die-casting mold remanufacturing. The integrated central control panel greatly reduces manual operation, improves production efficiency, and also reduces the labor intensity of operators and the impact of human factors on the strengthening effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0016] Figure 3 This is another structural schematic diagram of the present invention.

[0017] Reference numerals: 1. Workbench; 2. Mold base; 3. Fixing mechanism; 31. Electric push rod; 32. Active clamping plate; 33. Pressure sensor; 34. Fixed clamping plate; 35. Guide rod; 36. Limiting frame; 4. Position adjustment mechanism; 41. Cylinder; 42. Electric guide rail one; 43. Electric guide rail two; 5. Surface strengthening mechanism; 51. Plasma spraying assembly; 511. Powder feeder; 512. Plasma spray gun; 513. Air pump; 514. Height sensor; 52. Laser quenching assembly; 521. Laser; 522. Laser focusing lens; 523. Laser scanning galvanometer; 524. Temperature sensor; 53. Ultrasonic impact assembly; 531. Ultrasonic generator; 532. Amplitude bar; 533. Impact head; 6. Column; 7. Integrated central control panel; 8. Placement slot; 9. Assembly rack. Detailed Implementation

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] Example

[0020] like Figure 1-3 As shown, the present invention proposes a surface strengthening device for remanufacturing die casting molds, including a workbench 1, a mold base 2 is provided above the workbench 1, the mounting end of the mold base 2 is installed corresponding to one side of the upper part of the workbench 1, the mounting end of the mold base 2 is fixedly connected to one side of the upper part of the workbench 1, and a placement groove 8 is provided on one side of the upper part of the mold base 2. The placement groove 8 can facilitate the operator to quickly place the mold.

[0021] A fixing mechanism 3 is provided on the outer side of the mold base 2 on the worktable 1. The fixing mechanism 3 includes an electric push rod 31 located on one side of the mold base 2. The mounting end of the electric push rod 31 is installed corresponding to the upper side of the worktable 1 and is fixedly connected to the worktable 1. The output end of the electric push rod 31 is connected to an active clamping plate 32. One side of the active clamping plate 32 is installed corresponding to the output end of the electric push rod 31 and is fixedly connected to one side of the active clamping plate 32. Guide rods 35 are provided on both sides of the active clamping plate 32 on both sides of the electric push rod 31. One end of the guide rod 35 is fixed to one side of the active clamping plate 32. Two sets of limiting frames 36 are provided on one side of the mold base 2 on the worktable 1. The mounting end of the limiting frame 36 is fixedly connected to the worktable 1. The top end of the guide rod 35 passes through the limiting frame 36 and is installed corresponding to one side of the active clamping plate 32. A shaft hole is provided on the limiting frame 36, and the guide rod 35 slides through the shaft hole and slides with the limiting frame 36. The guide rod 35 is designed to guide and limit the movement of the active clamping plate 32. A fixed clamping plate 34 is provided on the side of the mold base 2 away from the active clamping plate 32. The mounting end of the fixed clamping plate 34 is installed on the upper side of the mold base 2 away from the active clamping plate 32. The fixed clamping plate 34 is fixedly connected to the active clamping plate 32. A pressure sensor 33 is provided on one side of the fixed clamping plate 34. An installation groove is provided on the fixed clamping plate 34. The mounting end of the pressure sensor 33 is installed in the corresponding groove. The mounting end of the pressure sensor 33 is fixedly connected to one side of the fixed clamping plate 34 through the installation groove. The pressure sensor 33 can detect the force when the active clamping plate 32 and the fixed clamping plate 34 are clamped together in real time, avoiding damage to the mold due to excessive pressure. The fixed mechanism 3 can adapt to die casting molds of different sizes and shapes, expanding the applicability of the device and meeting the needs of different customers for surface strengthening of die casting mold remanufacturing.

[0022] A position adjustment mechanism 4 is provided on the outside of the workbench 1. The position adjustment mechanism 4 includes cylinders 41 located at the four corners of the outer periphery of the workbench 1. The mounting ends of the cylinders 41 are installed corresponding to the corners of the outer periphery of the workbench 1 and are fixedly connected to the workbench 1. Electric guide rails 42 are provided at the top of two sets of cylinders 41 on the same side. The mounting ends of the electric guide rails 42 are installed corresponding to the output ends of the two sets of cylinders 41 on the same side and are fixedly connected to the output ends of the two sets of cylinders 41 on the same side. The cylinders 41 can adjust the height of the electric guide rails 42. A second electric guide rail 43 is arranged horizontally between the two sets of electric guide rails 42. The mounting end of 3 is installed correspondingly to the sliders on the two sets of electric guide rails 42. The mounting end of the electric guide rail 43 is fixedly connected to the sliders on the electric guide rail 42. The electric guide rail 42 can be set to adjust the electric guide rail 43 longitudinally. An assembly frame 9 is set on one side of the electric guide rail 43. The mounting end of the assembly frame 9 is fixedly connected to the sliders on the electric guide rail 43. The electric guide rail 43 can drive the assembly frame 9 to adjust laterally. A surface strengthening mechanism 5 is set on the electric guide rail 43. The position adjustment mechanism 4 can be set to adjust the surface strengthening mechanism 5 to different positions in height, lateral and longitudinal directions through the assembly frame 9, so as to adapt to molds of different specifications for surface strengthening operations.

[0023] The surface strengthening mechanism 5 includes a plasma spraying assembly 51. The plasma spraying assembly 51 includes a powder feeder 511 mounted on one side of the assembly frame 9. The mounting end of the powder feeder 511 is fixedly connected to one side of the assembly frame 9. The powder feeder 511 stores and transports the spraying powder. A plasma spray gun 512 is mounted on one side of the powder feeder 511, and its mounting end is fixedly connected to one side of the powder feeder 511. The plasma spray gun 512 sprays the spraying powder from the powder feeder 511. An air pump 513 is mounted above the powder feeder 511, and its mounting end is connected to the powder feeder. A powder feeding pipe is fixedly connected between the air pump 513 and the plasma spray gun 512 on the upper side of 511. The air pump 513 can provide working gas to the plasma spray gun 512. A height sensor 514 is set below the powder feeder 511. The mounting end of the height sensor 514 is fixedly connected to the lower side of the powder feeder 511. The height sensor 514 can detect the height of the surface strengthening mechanism 5. The plasma spraying assembly 51 can perform spraying operations on the mold surface to form a coating with good performance on the mold surface, thereby strengthening the mold surface.

[0024] A laser hardening assembly 52 is provided on one side of the plasma spraying assembly 51. The laser hardening assembly 52 includes a laser 521 disposed on one side of the plasma spraying assembly 51. The mounting end of the laser 521 is fixedly connected to one side of the mounting bracket 9. A laser focusing lens 522 is disposed on one side of the laser 521. The mounting end of the laser focusing lens 522 is fixedly connected to one side of the laser 521. A laser scanning galvanometer 523 is disposed at the top of the laser focusing lens 522. The mounting end of the laser scanning galvanometer 523 is located away from the laser on the laser focusing lens 522. One end of the laser device 521 is fixedly connected. The laser generated by the laser device 521 is focused by the laser focusing lens 522 and then reflected by the laser scanning galvanometer 523, thereby realizing the rapid scanning quenching treatment of the mold surface. A temperature sensor 524 is set on the worktable 1 on one side of the mold base 2. The mounting end of the temperature sensor 524 is fixedly connected to the upper side of the worktable 1. The temperature sensor 524 can detect the surface temperature of the mold and avoid damage caused by excessive mold temperature during laser quenching operation.

[0025] An ultrasonic impact component 53 is provided on the side of the electric guide rail 2 43 away from the plasma spraying component 51. The ultrasonic impact component 53 includes an ultrasonic generator 531 on the other side of the electric guide rail 2 43. The mounting end of the ultrasonic generator 531 is fixedly connected to the side of the electric guide rail 2 43 away from the plasma spraying component 51. An amplitude transformer 532 is provided below the ultrasonic generator 531. The mounting end of the amplitude transformer 532 is fixedly connected to the lower side of the ultrasonic generator 531. An impact head 533 is provided at the top of the amplitude transformer 532. The mounting end of the impact head 533 is fixedly connected to the end of the amplitude transformer 532 away from the ultrasonic generator 531. The ultrasonic generator 531 generates a high-frequency electrical signal, which is converted into mechanical vibration by the amplitude transformer 532. The vibration is amplified and transmitted to the impact head 533. The impact head 533 impacts the mold surface to eliminate residual stress and improve surface hardness and fatigue strength.

[0026] A column 6 is provided on one side of the workbench 1. The mounting end of the column 6 is installed corresponding to one side of the workbench 1 and is fixedly connected to the workbench 1. An integrated central control panel 7 is provided on the column 6. The mounting end of the integrated central control panel 7 is installed corresponding to one side of the column 6 and is fixedly connected to one side of the column 6. The fixing mechanism 3, the position adjustment mechanism 4, and the surface strengthening mechanism 5 are all electrically connected to the integrated central control panel 7. The arrangement of the fixing mechanism 3, the position adjustment mechanism 4, and the surface strengthening mechanism 5 being electrically connected to the integrated central control panel 7 facilitates integrated operation by the operator, greatly reduces manual operation, improves production efficiency, and also reduces the labor intensity of operators and the impact of human factors on the strengthening effect.

[0027] In this embodiment, when using this device to surface strengthen a die-casting mold, the die-casting mold to be strengthened is first placed in the placement slot 8 on the mold base 2. Then, the operator powers on the electric push rod 31 and pressure sensor 33 through the integrated central control panel 7. The electric push rod 31 drives the active clamping plate 32 to push the mold placed in the placement slot 8, so that the other side of the mold is in contact with the fixed clamping plate 34. Then, the active clamping plate 32 continues to push the mold, thereby cooperating with the fixed clamping plate 34 to stably clamp the mold. When the active clamping plate 32 is moving, the guide rod 35 guides and limits the movement of the active clamping plate 32 through the limiting frame 36. At this time, the mold is stably fixed in the placement slot 8.

[0028] According to the specific requirements of the mold and the strengthening process, the working parameters of the surface strengthening mechanism are set on the integrated control panel 7. If plasma spraying strengthening is required, the plasma spraying component 51 is started, the powder feeder 511 delivers the spraying powder to the plasma spray gun 512, the air pump 513 provides working gas to the plasma spray gun 512, and then the operator powers on the position adjustment mechanism 4 and the height sensor 514 so that the position adjustment mechanism 4 can drive the plasma spraying component 51 to perform position adjustment. At this time, the height sensor 514 detects the height of the plasma spraying component 51, and then the plasma spray gun 512 sprays the mold surface according to the preset path to form a coating with good performance on the mold surface.

[0029] If laser hardening is required, the laser hardening component 52 is turned on. The laser beam generated by the laser 521 is focused by the laser focusing lens 522 and reflected by the laser scanning galvanometer 523. At the same time, the temperature sensor 524 detects the surface temperature of the mold and performs a rapid scan on the mold surface to locally heat the mold surface to the hardening temperature. Then, it is rapidly cooled to achieve surface hardening and improve the hardness and wear resistance of the mold surface.

[0030] When ultrasonic impact strengthening is required, the ultrasonic impact component 53 is activated, the ultrasonic generator 531 generates a high-frequency electrical signal, which is converted into mechanical vibration through the amplitude transformer 532, and the vibration is amplified and transmitted to the impact head 533. The impact head 533 impacts the mold surface to improve the surface structure of the mold, eliminate residual stress, and improve the fatigue performance of the mold.

[0031] Throughout the surface strengthening process, temperature sensor 524, height sensor 514, and pressure sensor 33 monitor parameters such as the temperature of the mold surface, the moving position of the surface strengthening mechanism 5, and the clamping force of the fixing mechanism 3 on the mold in real time, and transmit the data to the integrated central control panel 7. The integrated central control panel 7 performs precise control of the mold fixing mechanism 3, the position adjustment mechanism 4, and the surface strengthening mechanism 5 according to the preset program and the real-time monitoring data to ensure the smooth progress of the surface strengthening process and the consistency of the strengthening effect.

[0032] After the surface strengthening treatment is completed, the fixing mechanism 3 is controlled by the integrated central control panel 7 to release the mold and remove the strengthened die-casting mold from the device, thus completing the entire surface strengthening process.

[0033] The above-described specific embodiments are merely preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above-described specific embodiments.

Claims

1. A surface strengthening device for remanufacturing die-casting molds, comprising a worktable (1), characterized in that: A mold base (2) is provided above the workbench (1). A fixing mechanism (3) is provided on the outside of the mold base (2) on the workbench (1). The fixing mechanism (3) includes an electric push rod (31) located on one side of the mold base (2). The output end of the electric push rod (31) is connected to an active clamping plate (32). A fixing clamping plate (34) is provided on the side of the mold base (2) away from the active clamping plate (32). A pressure sensor (33) is provided on one side of the fixing clamping plate (34). A position adjustment mechanism (4) is provided on the outside of the workbench (1). The position adjustment mechanism (4) includes cylinders (41) located at the four corners of the outer periphery of the workbench (1). Electric guide rail 1 (42) is provided at the top of the two sets of cylinders (41) on the same side. Electric guide rail 2 (43) is arranged horizontally between the two sets of electric guide rail 1 (42). Surface strengthening mechanism (5) is provided on electric guide rail 2 (43). Surface strengthening mechanism (5) includes plasma spraying assembly (51). Laser quenching assembly (52) is provided on one side of plasma spraying assembly (51). Ultrasonic impact assembly (53) is provided on the side of electric guide rail 2 (43) away from plasma spraying assembly (51). Column (6) is provided on one side of worktable (1). Integrated central control panel (7) is provided on column (6).

2. The surface strengthening device for remanufacturing die-casting molds according to claim 1, characterized in that, The mounting end of the mold base (2) is installed corresponding to the upper side of the workbench (1), and a placement groove (8) is provided on the upper side of the mold base (2).

3. The surface strengthening device for remanufacturing die-casting molds according to claim 1, characterized in that, The mounting end of the electric push rod (31) is installed corresponding to the upper side of the workbench (1). One side of the active clamping plate (32) is installed corresponding to the output end of the electric push rod (31). Guide rods (35) are provided on both sides of the electric push rod (31) on the active clamping plate (32). Two sets of limiting frames (36) are provided on the workbench (1) on the side of the mold base (2). The top of the guide rod (35) passes through the limiting frame (36) and is installed corresponding to one side of the active clamping plate (32). The mounting end of the fixed clamping plate (34) is installed corresponding to the upper side of the mold base (2) away from the active clamping plate (32). The fixed clamping plate (34) has an installation groove. The mounting end of the pressure sensor (33) is installed corresponding to the installation groove.

4. The surface strengthening device for remanufacturing die-casting molds according to claim 1, characterized in that, The mounting end of the cylinder (41) is installed corresponding to the outer corner of the workbench (1). The mounting end of the electric guide rail one (42) is installed corresponding to the output end of the two sets of cylinders (41) on the same side. The mounting end of the electric guide rail two (43) is installed corresponding to the slider on the two sets of electric guide rail one (42). An assembly frame (9) is provided on one side of the electric guide rail two (43).

5. The surface strengthening device for remanufacturing die-casting molds according to claim 4, characterized in that, The plasma spraying assembly (51) includes a powder feeder (511) disposed on one side of the assembly frame (9), a plasma spray gun (512) disposed on one side of the powder feeder (511), an air pump (513) disposed above the powder feeder (511), and a height sensor (514) disposed below the powder feeder (511).

6. The surface strengthening device for remanufacturing die-casting molds according to claim 1, characterized in that, The laser quenching assembly (52) includes a laser (521) disposed on one side of the plasma spraying assembly (51), a laser focusing lens (522) disposed on one side of the laser (521), a laser scanning galvanometer (523) disposed at the top of the laser focusing lens (522), a temperature sensor (524) disposed on one side of the mold base (2) on the worktable (1), and an ultrasonic impact assembly (53) includes an ultrasonic generator (531) disposed on the other side of the electric guide rail (43), an amplitude transformer (532) disposed below the ultrasonic generator (531), and an impact head (533) disposed at the top of the amplitude transformer (532).

7. The surface strengthening device for remanufacturing die-casting molds according to claim 1, characterized in that, The mounting end of the column (6) is installed corresponding to one side of the workbench (1), and the mounting end of the integrated central control panel (7) is installed corresponding to one side of the column (6). The fixing mechanism (3), the position adjustment mechanism (4), and the surface strengthening mechanism (5) are all electrically connected to the integrated central control panel (7).

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