Laser cladding preheating and heat preservation device

Abstract

The utility model discloses a laser cladding preheating heat preservation device which comprises a laser cladding machining table and a bottom plate, the top end of the laser cladding machining table is fixedly connected with the bottom plate, rotating clamp seats are erected on the left side and the right side of the bottom plate respectively, metal rod pieces are fixed to the rotating clamp seats, and a hollow cavity is formed in the bottom plate. According to the laser cladding preheating heat preservation device, a first motor, a first gear, a second gear, a linear screw rod and a threaded sleeve are arranged, a heat preservation device body is a movable preheating cover composed of two sets of half cover bodies, a workpiece part needing cladding is heated in advance according to the laser cladding speed, and the workpiece part synchronously moves rightwards along with a laser cladding head; and the function of automatic movement can ensure that the whole section of the metal rod is heated and positioned to the required position so as to realize preheating and heat preservation of a workpiece, so that the working efficiency is improved, a better laser cladding effect is achieved, and the problems of preheating and heat preservation are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cladding, in particular to a laser cladding preheating and heat preservation device. Background Art

[0002] Laser cladding is a high-precision and high-efficiency metal processing method. It uses a laser beam to melt the metal surface at high temperature, and then quickly cools and forms it. It can be used to manufacture metal rods, parts, etc. This process has the advantages of high precision, low deformation, and rapid processing, and is widely used in aerospace, automobile manufacturing, mold manufacturing and other fields.

[0003] When laser cladding is performed on long and large workpieces such as metal rods, the heat of laser cladding may not be evenly distributed over the entire workpiece due to the thermal conductivity of the metal material, resulting in uneven cladding effects and quality issues. In addition, the temperature gradient during laser cladding varies greatly, which can easily cause stress and deformation inside the workpiece, ultimately affecting the quality of laser cladding.

[0004] Therefore, there is an urgent need for a laser cladding preheating and insulation device to solve the technical defects raised in the above-mentioned technology. Utility Model Content

[0005] The utility model aims to provide a laser cladding preheating and heat preservation device to solve the problem that there is no preheating and heat preservation design in the above background technology, which affects the quality of laser cladding.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a laser cladding preheating and heat preservation device, comprising a laser cladding processing table and a base plate, the top of the laser cladding processing table is fixedly connected to the base plate, and rotating fixture seats are mounted on the left and right sides of the base plate, and metal rods are fixed to the rotating fixture seats, a hollow cavity is opened in the base plate, a first motor is fixed on the left side of the hollow cavity, an output end of the first motor is fixedly connected to a rotating shaft, and the rotating shaft is movably assembled in the hollow cavity, a linear screw is arranged at the front and back of the rotating shaft, a first gear is sleeved on the outside of the rotating shaft, a second gear is sleeved on the outside of the linear screw, and the second gear is respectively meshed with the first gear, a threaded sleeve is sleeved on the outside of the linear screw, a movable plate is fixed on the top of the threaded sleeve, and two sets of supporting feet are movably connected to the top of the movable plate, and half-cover bodies are respectively fixed on the tops of the supporting feet, and the two sets of half-cover bodies are combined to form a movable preheating cover.

[0007] Preferably, a second motor is fixed in the middle position inside the movable plate, and the output end of the second motor is fixedly connected to a third gear, and racks are meshed at both front and rear ends of the third gear, and a fixed sleeve is installed at the bottom end of the rack, and the rack moves in the fixed sleeve, and connecting rods are fixed on one side of the rack, and a sliding groove is opened at the top of the movable plate, and the connecting rods are respectively embedded in the sliding groove and move, and the top ends of the connecting rods are respectively fixedly connected to the support feet.

[0008] Preferably, the adjacent side of the movable preheating cover is open, and the two groups of half covers constituting the movable preheating cover are both fixed with support frames, the support frames are both equipped with temperature sensors, and electric heating tubes are respectively fixed at the support frames, and the two groups of electric heating tubes are combined to form a circular ring structure.

[0009] Preferably, the linear screws are provided in two groups with the same thread direction, and the second gear is symmetrically arranged with respect to the first gear.

[0010] Preferably, a fixing plate is fixed to the top of the movable preheating cover, partitions are fixed to the fixing plates respectively, grooves matching the electric heating tubes are opened on the inner walls of the partitions, and after the two groups of partitions are combined, the grooves and the electric heating tubes form a through circular channel.

[0011] Preferably, the partition plate and the fixing plate are fixedly connected with fixing bolts, and the height position of the partition plate is locked by the fixing bolts.

[0012] Preferably, two groups of racks are provided, and the racks are centrally symmetrical about the third gear.

[0013] Preferably, the length of the bottom plate is set according to the length of the laser cladding processing table, and the movable preheating cover is covered on the outside of the metal rod and does not contact the metal rod.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the laser cladding preheating and heat preservation device not only realizes the preheating and heat preservation of the workpiece, has a better laser cladding effect, realizes the automatic opening and closing of the heat preservation cover, is convenient for loading and unloading, saves time and labor costs, and prevents the laser beam and the device from interfering with each other, which is conducive to improving work safety;

[0015] (1) The heat preservation device is provided with a first motor, a first gear, a second gear, a linear screw and a threaded sleeve. The main body of the heat preservation device is a mobile preheating cover composed of two groups of half covers. When the laser cladding machine head performs laser processing on the metal rod outside, the first motor synchronously drives the first gear to rotate, and the two groups of second gears rotate to drive the linear screw to rotate, so that the linear motion of the threaded sleeve drives the mobile preheating cover to move horizontally to the right. According to the speed of laser cladding, the part of the workpiece to be clad is heated in advance, and it moves to the right synchronously with the laser cladding head. The automatic movement function can ensure that the entire section of the metal rod is heated and positioned to the required position to achieve preheating and heat preservation of the workpiece, thereby improving work efficiency and having a better laser cladding effect.

[0016] (2) The second motor, the third gear, the rack, the movable preheating cover, the electric heating tube, and the temperature sensor are provided. The movable preheating cover is composed of two half covers that can be opened automatically. Before starting work, the operator can start the second motor to drive the third gear to rotate, drive the two sets of racks to move, thereby driving the two half covers to merge into a complete movable preheating cover that covers the outside of the metal rod without the movable preheating cover contacting the metal rod. After the electric heating tube inside the movable preheating cover is powered on and heated, the temperature is controlled by the temperature sensor to achieve heat preservation. After the work is completed, since the half cover can be opened automatically, the operator can easily take out or put in the workpiece without removing the entire movable preheating cover, thereby simplifying the operation process, facilitating loading and unloading, and saving time and labor costs.

[0017] (3) A partition, fixing bolts, and a movable preheating hood are provided. A partition is provided on the left side of the movable preheating hood. Since the strong laser generated by the laser cladding equipment may have an adverse effect on the surrounding environment and equipment, a partition is provided, and the height position of the partition can be adjusted by fixing bolts. This can effectively prevent the laser beam and the device from interfering with each other, thereby ensuring the stability and reliability of the device. This is not only conducive to improving work safety, but also can extend the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view structural schematic diagram of the utility model;

[0019] Figure 2 This is a side structural schematic diagram of the movable preheating cover of the utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the movable plate of the utility model when viewed from above;

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the bottom plate of the utility model when viewed from above.

[0022] In the figure: 1. laser cladding processing table; 2. rotating fixture seat; 3. bottom plate; 4. movable preheating cover; 5. partition; 6. fixing bolt; 7. fixing plate; 8. support frame; 9. electric heating tube; 10. temperature sensor; 11. support foot; 12. moving plate; 13. third gear; 14. second motor; 15. rack; 16. fixing sleeve; 17. connecting rod; 18. slide groove; 19. first motor; 20. first gear; 21. second gear; 22. linear screw; 23. rotating shaft; 24. threaded sleeve; 25. hollow cavity. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1: Please refer to Figure 1-4 A laser cladding preheating and heat preservation device comprises a laser cladding processing table 1 and a bottom plate 3. The top of the laser cladding processing table 1 is fixedly connected to the bottom plate 3. Rotating fixture seats 2 are arranged on both sides of the bottom plate 3. Metal rods are fixed to the rotating fixture seats 2. A hollow cavity 25 is opened in the bottom plate 3. A first motor 19 is fixed to the left side of the hollow cavity 25. A rotating shaft 23 is fixedly connected to the output end of the first motor 19. The rotating shaft 23 is movably assembled in the hollow cavity 25. Linear screws 22 are arranged at the front and rear of the rotating shaft 23. A first gear 20 is sleeved on the outside of the rotating shaft 23. A second gear 21 is sleeved on the outside of the linear screw 22. The second gear 21 is respectively sleeved with the first gear 2 0 meshing connection, the outside of the linear screw 22 is sleeved with a threaded sleeve 24, the top of the threaded sleeve 24 is fixed with a moving plate 12, the top of the moving plate 12 is movably connected with two groups of legs 11, the tops of the legs 11 are respectively fixed with half covers, the two groups of half covers are combined to form a mobile preheating cover 4, the adjacent side of the mobile preheating cover 4 is open, the two groups of half covers that constitute the mobile preheating cover 4 are fixed with support frames 8, the support frames 8 are installed with temperature sensors 10, the support frames 8 are respectively fixed with electric heating pipes 9, the two groups of electric heating pipes 9 are combined to form a ring structure, two groups of linear screws 22 are provided, the thread direction is the same, and the second gear 21 is symmetrically arranged about the first gear 20;

[0025] Specifically, Figure 1 , Figure 2 and Figure 4As shown, the main body of the heat preservation device is a movable preheating cover 4 composed of two groups of half covers. When the laser cladding machine head performs laser processing on the metal rod outside, the first motor 19 synchronously drives the first gear 20 to rotate, and the two groups of second gears 21 rotate to drive the linear screw 22 to rotate, thereby driving the movable preheating cover 4 to move horizontally to the right through the linear motion of the threaded sleeve 24. According to the speed of laser cladding, the part of the workpiece that needs to be clad is heated in advance, and moves to the right synchronously with the laser cladding head. The automatic movement function can ensure that the entire section of the metal rod is heated.

[0026] Embodiment 2: A second motor 14 is fixed in the middle position inside the movable plate 12, and the output end of the second motor 14 is fixedly connected to the third gear 13. Racks 15 are meshed at both the front and rear ends of the third gear 13, and a fixing sleeve 16 is installed at the bottom end of the rack 15. The rack 15 moves in the fixing sleeve 16, and connecting rods 17 are fixed on one side of the rack 15. A slide groove 18 is opened at the top of the movable plate 12, and the connecting rods 17 are respectively embedded in the slide groove 18 and move. The top of the connecting rod 17 is respectively fixedly connected to the support foot 11. Two groups of racks 15 are provided, and the racks 15 are symmetrical about the third gear 13. The length of the bottom plate 3 is set according to the length of the laser cladding processing table 1, and the movable preheating cover 4 covers the outside of the metal rod and does not contact the metal rod;

[0027] Specifically, Figure 1 , Figure 2 and Figure 3 As shown, the mobile preheating cover 4 is composed of two half covers that can be opened automatically. Before starting work, the operator can start the second motor 14 to drive the third gear 13 to rotate, drive the two sets of racks 15 to move, thereby driving the two half covers to merge into a complete mobile preheating cover 4 that covers the outside of the metal rod and the mobile preheating cover 4 does not contact the metal rod. After the electric heating tube 9 inside the mobile preheating cover 4 is energized and heated, the temperature is controlled by the temperature sensor 10 to achieve heat preservation. After the work is completed, the half cover can be automatically opened.

[0028] Embodiment 3: A fixing plate 7 is fixed to the top of the movable preheating cover 4, and partitions 5 are fixed to the fixing plates 7. The inner wall of the partition 5 is provided with a groove matching the electric heating tube 9. After the two groups of partitions 5 are combined, the groove and the electric heating tube 9 form a through circular channel. The partition 5 and the fixing plate 7 are fixedly connected with fixing bolts 6, and the height position of the partition 5 is locked by the fixing bolts 6;

[0029] Specifically, Figure 1 and Figure 2 As shown, a partition 5 is arranged on the left side of the movable preheating cover 4. Since the strong laser generated by the laser cladding equipment may have an adverse effect on the surrounding environment and equipment, by setting the partition 5 and adjusting the height position of the partition 5 by the fixing bolt 6, the laser beam and the device can be effectively prevented from interfering with each other.

[0030] Working principle: When the utility model is in use, first, the operator can start the second motor 14 to drive the third gear 13 to rotate, drive the two sets of racks 15 to move, thereby driving the two half covers to merge into a complete mobile preheating cover 4 to cover the outside of the metal rod. After the electric heating tube 9 inside the mobile preheating cover 4 is powered on and heated, the temperature is controlled by the temperature sensor 10 to achieve heat preservation. When the laser cladding machine head performs laser processing on the metal rod outside, the first motor 19 synchronously drives the first gear 20 to rotate, and the two sets of second gears 21 rotate to drive the linear screw 22 to rotate, thereby The linear motion of the threaded sleeve 24 drives the movable preheating cover 4 to move horizontally to the right. The part of the workpiece to be clad is heated in advance according to the speed of laser cladding, and moves to the right synchronously with the laser cladding head. The automatic movement function can ensure that the entire section of the metal rod is heated and positioned to the required position. A partition 5 is provided on the left side of the movable preheating cover 4. By providing the partition 5 and adjusting the height position of the partition 5 by the fixing bolt 6, the laser beam and the device can be effectively prevented from interfering with each other. After the work is completed, since the half cover can be automatically opened, the operator can easily remove the workpiece.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A laser cladding preheating and heat preservation device, comprising a laser cladding processing table (1) and a bottom plate (3), characterized in that: The top of the laser cladding processing table (1) is fixedly connected to a bottom plate (3), and a rotating fixture seat (2) is mounted on both sides of the bottom plate (3). A metal rod is fixed to the rotating fixture seat (2). A hollow cavity (25) is opened in the bottom plate (3), and a first motor (19) is fixed on the left side of the hollow cavity (25). The output end of the first motor (19) is fixedly connected to a rotating shaft (23), and the rotating shaft (23) is movably assembled in the hollow cavity (25). Linear screws (22) are arranged at the front and rear of the rotating shaft (23). The rotating shaft (23) is sleeved with a first gear (20) on the outside, the linear screw (22) is sleeved with a second gear (21) on the outside, the second gears (21) are respectively meshed and connected with the first gears (20), the linear screw (22) is sleeved with a threaded sleeve (24) on the outside, the top of the threaded sleeve (24) is fixed with a movable plate (12), the top of the movable plate (12) is movably connected with two groups of supporting feet (11), the top of the supporting feet (11) is respectively fixed with a half cover body, and the two groups of half cover bodies are combined to form a movable preheating cover (4).

2. A laser cladding preheating and heat preservation device according to claim 1, characterized in that: A second motor (14) is fixed at the middle position inside the movable plate (12); the output end of the second motor (14) is fixedly connected to a third gear (13); the front and rear sections of the third gear (13) are meshed with racks (15); a fixing sleeve (16) is installed at the bottom end of the rack (15); the rack (15) moves in the fixing sleeve (16); a connecting rod (17) is fixed on one side of the rack (15); a sliding groove (18) is provided at the top end of the movable plate (12); the connecting rod (17) is respectively embedded in the sliding groove (18) and moves; and the top end of the connecting rod (17) is respectively fixedly connected to the support foot (11).

3. The laser cladding preheating and heat preservation device according to claim 1 is characterized in that: The adjacent side of the movable preheating cover (4) is open, and support frames (8) are fixed inside the two groups of half covers constituting the movable preheating cover (4), and temperature sensors (10) are installed inside the support frames (8). Electric heating pipes (9) are respectively fixed to the support frames (8), and the two groups of electric heating pipes (9) are combined to form a circular ring structure.

4. The laser cladding preheating and heat preservation device according to claim 1 is characterized in that: The linear screws (22) are provided in two groups, with the thread directions being the same, and the second gear (21) is symmetrically arranged with respect to the first gear (20).

5. The laser cladding preheating and heat preservation device according to claim 1 is characterized in that: A fixing plate (7) is fixed to the top of the movable preheating cover (4), and partitions (5) are fixed to the fixing plates (7). The inner walls of the partitions (5) are provided with grooves matching the electric heating pipes (9). When the two groups of partitions (5) are combined, the grooves and the electric heating pipes (9) form a through circular channel.

6. The laser cladding preheating and heat preservation device according to claim 5, characterized in that: A fixing bolt (6) is fixedly connected between the partition plate (5) and the fixing plate (7), and the height position of the partition plate (5) is locked by the fixing bolt (6).

7. The laser cladding preheating and heat preservation device according to claim 2 is characterized in that: Two groups of racks (15) are provided, and the racks (15) are centrally symmetrical with respect to the third gear (13).

8. The laser cladding preheating and heat preservation device according to claim 1 is characterized in that: The length of the bottom plate (3) is set according to the length of the laser cladding processing table (1), and the movable preheating cover (4) covers the outside of the metal rod and does not contact the metal rod.

Images