Thermal spraying device for inner hole of cylinder body

Abstract

The utility model discloses a thermal spraying device for an inner hole of a cylinder body. The thermal spraying device comprises a workbench, a rotary table, a rotary spraying gun, a connecting frame, a sliding column, a movement adjusting mechanism and a height adjusting mechanism, wherein the rotary table is rotatably connected with the workbench, the sliding column is fixedly connected to the workbench, the connecting frame is slidably connected with the sliding column through the height adjusting mechanism, and the height adjusting mechanism is used for adjusting the height of the connecting frame; the rotary spray gun is connected with the connecting frame through a movable adjusting mechanism used for moving the rotary spray gun, and the rotary spray gun faces the rotary table. According to the utility model, the angle adjusting function of the rotary table ensures that the cylinder body of the engine is uniformly sprayed in the spraying process. By means of the design, stable movement of the rotary spray gun can be guaranteed during spraying, and the uniformity of a sprayed coating is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to engine machining device technical field, concretely is a cylinder bore thermal spraying device. BACKGROUND

[0006]

[0002] Engine cylinder is one of the core components of engine. Engine cylinder is responsible for containing piston, cylinder, crankshaft and other key components, and bears the pressure and temperature generated inside the engine. Engine cylinder is usually made of cast iron or aluminum alloy, and the engine cylinder made of cast iron has good wear resistance and pressure resistance, and the cylinder made of aluminum alloy has the advantages of light weight and good heat dissipation performance. In order to reduce the weight of engine, reduce fuel consumption, realize energy saving and emission reduction, automobile manufacturers develop advanced technology of spraying coating on the surface of aluminum alloy cylinder hole instead of traditional inlaying cast cylinder sleeve. For aluminum alloy engine cylinder hole, a functional coating is sprayed on the surface of the cylinder hole by using inner hole thermal spraying technology. Thermal spraying technology mainly uses electric arc, plasma flame or combustion flame as heat source to heat the powder or wire of metal or non-metal material to a molten or semi-molten state, and then sprays it to the pretreated substrate surface through the flame itself or the auxiliary compressed air, so as to form a coating with special performance on the substrate.

[0003] In the prior art, most of the inner hole rotary spray guns are vertically up and down rotating for spraying operation. For engine cylinder with inclined angle (such as V type), spraying operation cannot be directly carried out, and special inclined tooling needs to be made to incline the cylinder to ensure that the cylinder hole is in vertical state, so as to ensure that the rotary spray gun can carry out spraying operation. At the same time, due to the complex structure of the rotary spray gun and the heavy weight, the spraying operation cannot be carried out by hand. Therefore, an aluminum alloy cylinder inner hole thermal spraying device needs to be made to solve the stable gripping of the rotary spray gun, the uniformity problem of cylinder hole spraying coating, and the spraying of different types of engine cylinder, including straight type and V type with inclined angle.

[0004] In the patent with publication number CN108677125A, an inner hole vertical spraying electric arc inner hole spray gun is disclosed. The inner hole vertical spraying electric arc inner hole spray gun of this structure sprays the melted wire vertically to the inner wall of the engine cylinder hole to be sprayed by compressed air, and the rotating system rotates during the spraying process. This spray gun cannot directly carry out spraying operation for engine cylinder with inclined angle (such as V type), and special inclined tooling needs to be made to incline the cylinder to ensure that the cylinder hole is in vertical state, so as to ensure that the rotary spray gun can carry out spraying operation, which has the problem of inconvenient use. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a cylinder bore thermal spraying device to solve the following technical problems raised in the background art:

[0006] The prior art rotary spray gun cannot directly spray the engine cylinder body with an inclined angle.

[0007] To solve the above technical problems, the utility model adopts the technical scheme of:

[0008] A cylinder bore thermal spraying device, comprising a workbench, a rotary table, a rotary spray gun, a connecting frame, a sliding column, a moving adjustment mechanism and a height adjustment mechanism; wherein the rotary table is rotationally connected with the workbench, the sliding column is fixedly connected to the workbench, the connecting frame is slidingly connected with the sliding column through the height adjustment mechanism, and the height adjustment mechanism is used for adjusting the height of the connecting frame; the rotary spray gun is connected with the connecting frame through the moving adjustment mechanism, the moving adjustment mechanism is used for moving the rotary spray gun, and the rotary spray gun faces the rotary table.

[0009] Further, the middle front side of the workbench is provided with a matching hole; the rotary table comprises a rotary plate, a support seat and a first motor; the rotary plate is rotationally connected to the workbench, the first motor is connected to the support seat, the output shaft of the first motor is connected with the rotary plate, and the rotary plate is arranged in the matching hole.

[0010] Further, the bottom of the rotary plate is fixedly connected with a driven gear, the first motor is connected to the support seat, the output shaft of the first motor is fixedly connected with a driving gear, and the driving gear is engaged with the driven gear.

[0011] Further, the middle circular position of the rotary plate is provided with an alignment mark.

[0012] Further, the height adjustment mechanism comprises a sliding sleeve, an intermediate plate, a first lead screw and a second motor; wherein the sliding sleeve is movably sleeved outside the sliding column, the sliding sleeve and the intermediate plate are fixedly connected with the connecting frame, the first lead screw is rotationally connected to the workbench, the first lead screw is threadedly connected with the intermediate plate, and the second motor is used for driving the first lead screw to rotate.

[0013] Further, the outside of the sliding column is provided with a plurality of vertical T-shaped grooves, and the inside of the sliding sleeve is fixedly connected with a plurality of T-shaped connecting blocks, which are movably and fitly connected in the T-shaped grooves.

[0014] Further, a reinforcing column is connected between the connecting frame and the sliding sleeve, and the two ends of the reinforcing column are fixedly connected with the connecting frame and the sliding sleeve.

[0015] Further, the moving adjustment mechanism comprises a connecting plate, a moving piece, a second lead screw and a third motor; wherein the connecting plate is fixedly connected with the connecting frame, the middle part of the connecting plate is provided with a moving sliding groove, one side of the moving piece is slidingly connected in the moving sliding groove, the rotary spray gun is connected with the moving piece, the second lead screw is rotationally connected with the connecting frame, the second lead screw is threadedly connected with the moving piece, and the third motor is used for driving the second lead screw to rotate.

[0016] Further, the third motor is connected with the connecting plate, a driving pulley is fixed on an output shaft of the third motor, and a driven pulley is fixed on one end of the second screw rod, and the driving pulley and the driven pulley are connected through a belt.

[0017] Further, the rotary spray gun is detachably connected with the mounting seat.

[0018] Compared with the prior art, the utility model has the advantages of the following beneficial effects:

[0019] The angle adjusting function of the rotating table in the utility model guarantees that the cylinder of the engine is evenly sprayed during the spraying process. This design guarantees the stable movement of the rotary spray gun and ensures the uniformity of the spraying. Meanwhile, the design of the rotating table combined with the moving adjusting mechanism realizes automatic spraying, which reduces the complexity of manual operation on one hand and improves the uniformity and efficiency of the spraying on the other hand. In addition, the design of the connecting frame can conveniently hold and move the rotary spray gun, guarantees the movement stability of the rotary spray gun, and further improves the spraying effect. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is one of the overall structure schematic diagrams of the utility model;

[0021] Figure 2 It is the second overall structure schematic diagram of the utility model;

[0022] Figure 3 It is the third overall structure schematic diagram of the utility model;

[0023] Figure 4 It is the top view of the utility model.

[0024] Marked in the figure: 1-height adjusting mechanism, 2-T-shaped sliding groove, 3-sliding sleeve, 4-workbench, 5-rotating table, 6-rotary spray gun, 7-mounting seat, 8-moving adjusting mechanism, 9-connecting frame, 10-sliding column, 11-rotating plate, 12-first motor, 13-supporting seat, 14-second motor, 15-first screw rod, 16-intermediate plate, 17-moving sliding groove, 18-moving piece, 19-third motor, 20-second screw rod, 21-connecting plate, 22-strengthening column, 23-driving gear, 24-driven gear. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] Embodiment:

[0027] A cylinder bore thermal spraying device, comprising a workbench 4, a rotary table 5, a rotary spray gun 6, a connecting frame 9, a sliding column 10, a moving adjusting mechanism 8 and a height adjusting mechanism 1; wherein the rotary table 5 is rotationally connected with the workbench 4, the sliding column 10 is fixedly connected with the workbench 4, the connecting frame 9 is slidingly connected with the sliding column 10 through the height adjusting mechanism 1, the height adjusting mechanism 1 is used for adjusting the height of the connecting frame 9; the rotary spray gun 6 is connected with the connecting frame 9 through the moving adjusting mechanism 8, the moving adjusting mechanism 8 is used for moving the rotary spray gun 6, and the rotary spray gun 6 faces the rotary table 5.

[0028] The workbench 4 is used as a mounting base of other components and plays a supporting role. The rotary table 5 is used for placing a cylinder, and at the same time, the rotary table 5 can rotate and drive the cylinder to rotate and adjust the inclination angle of the cylinder. By adjusting the inclination angle of the cylinder, the cylinder bore of the V-type engine can be directly opposite to the rotary spray gun 6, thereby facilitating the spraying of the cylinder bore of the V-type engine. The rotary spray gun 6 adopts a special plasma rotary spray gun 6 for bore spraying, and the rotary spray gun nozzle can rotate during spraying, for example, the F210 rotary spray gun developed by the existing technology of Oerlikon Metco; the sliding column 10 is used to ensure that the connecting frame 9 can stably slide up and down, and the height adjusting mechanism 1 is used to drive the connecting frame 9 to move up and down along the sliding column 10. The height adjusting mechanism 1 can adopt structures such as lifting cylinders and electric hoists. The moving adjusting mechanism 8 is used to adjust the left-right position of the rotary spray gun 6, that is, to adjust the distance between the nozzle of the rotary spray gun 6 and the cylinder bore, so as to ensure that the distance between the nozzle of the rotary spray gun 6 and the inner wall of the cylinder is consistent. The moving adjusting mechanism 8 can adopt structures such as air cylinders and gear racks. In the initial state, the nozzle of the rotary spray gun 6 faces the center of the rotary table 5.

[0029] Specifically, in use, the cylinder is placed on the rotary table 5, the inclination angle of the cylinder is adjusted through the rotary table 5, so that the cylinder bore of the V-type engine can be directly opposite to the rotary spray gun 6. The cylinder bore to be sprayed is placed at the center of the rotary table 5. The connecting frame 9 is lowered through the height adjusting mechanism 1, and the connecting frame 9 drives the rotary spray gun 6 to move downward until the nozzle of the rotary spray gun 6 moves into the cylinder bore. The rotary spray gun 6 is moved left and right through the moving adjusting mechanism 8, the distance between the nozzle of the rotary spray gun 6 and the inner wall of the cylinder bore is adjusted, and the appropriate spraying distance is ensured. The rotary spray gun 6 is turned on, and the rotary spray gun 6 sprays the molten material to the inner wall of the cylinder bore. During the spraying process, the rotary spray gun 6 is reciprocally moved through the height adjusting mechanism 1, thereby completing the uniform spraying of the cylinder bore.

[0030] In a preferred embodiment, the middle front side of the workbench 4 is provided with a matching hole; the rotary table 5 comprises a rotating plate 11, a support base 13 and a first motor 12; the rotating plate 11 is rotationally connected to the workbench 4, the first motor 12 is connected to the support base 13, the output shaft of the first motor 12 is connected to the rotating plate 11, and the rotating plate 11 is arranged in the matching hole. The design of the matching hole ensures the stable rotation of the rotating plate 11, and the connection between the rotating plate 11 and the first motor 12 enables stable control of the rotating plate 11.

[0031] In a preferred embodiment, the bottom of the rotating plate 11 is fixedly connected to a driven gear 24, the first motor 12 is connected to the support base 13, the output shaft of the first motor 12 is fixedly connected to a driving gear 23, and the driving gear 23 is engaged with the driven gear 24. The engagement relationship between the driving gear 23 and the driven gear 24 enables the rotational power of the first motor 12 to be clearly transmitted to the rotating plate 11 through gear transmission. This transmission mode ensures the stable rotation of the rotating plate 11 while facilitating the control of the rotational speed of the rotating plate 11. In a preferred embodiment, the output shaft of the first motor 12 is connected to a worm gear reducer, and the output shaft of the first motor 12 is connected to the driving gear 23 through the worm gear reducer, thereby conveniently ensuring that the driving gear 23 does not rotate in a stationary state.

[0032] In a preferred embodiment, the middle circular position of the rotating plate 11 is provided with an alignment mark. The alignment mark provides a clear center point, so that the operator can quickly and accurately align the to-be-sprayed cylinder hole with the center position of the rotating plate 11 when placing the cylinder on the rotary table 5, thereby reducing the time for repeated adjustments and improving the work efficiency.

[0033] In a preferred embodiment, the height adjustment mechanism 1 comprises a sliding sleeve 3, an intermediate plate 16, a first lead screw 15 and a second motor 14; wherein the sliding sleeve 3 is movably sleeved outside the sliding column 10, the sliding sleeve 3 and the intermediate plate 16 are fixedly connected to the connecting frame 9, the first lead screw 15 is rotationally connected to the workbench 4, the first lead screw 15 is threadedly connected to the intermediate plate 16, and the second motor 14 is used to drive the first lead screw 15 to rotate. The combination of the sliding sleeve 3, the connecting frame 9 and the intermediate plate 16 enables the rotary spray gun 6 to be flexibly adjusted between different heights of the cylinder. The threaded connection between the first lead screw 15 and the intermediate plate 16 provides a precise height adjustment mechanism, making fine adjustment possible and ensuring that the rotary spray gun 6 can be sprayed at the most appropriate position to achieve uniform spraying effect. The sliding sleeve 3 is movably sleeved outside the sliding column 10, which helps to maintain the stability of the structure during adjustment, reduces lateral movement and shaking, and ensures that the rotary spray gun 6 does not deviate during spraying, thereby improving the reliability of the equipment.

[0034] In a preferred embodiment, the outer side of the sliding column 10 is provided with a plurality of vertical T-shaped grooves 2, and the inner side of the sliding sleeve 3 is fixedly connected with a plurality of T-shaped connecting blocks which are movably connected in the T-shaped grooves 2. The design of the T-shaped grooves 2 and the T-shaped connecting blocks provides a stable guide rail path, so that the sliding sleeve 3 is not easy to tilt or shake during its up and down movement, ensuring the stable and reliable height adjustment process of the rotary spray gun 6.

[0035] In a preferred embodiment, a reinforcing column 22 is connected between the connecting frame 9 and the sliding sleeve 3, and the two ends of the reinforcing column 22 are fixedly connected with the connecting frame 9 and the sliding sleeve 3. The reinforcing column 22 is used to ensure the stability of the connection between the connecting frame 9 and the sliding sleeve 3.

[0036] In a preferred embodiment, the movement adjustment mechanism 8 includes a connecting plate 21, a moving piece 18, a second lead screw 20, and a third motor 19. The connecting plate 21 is fixedly connected with the connecting frame 9, and the middle part of the connecting plate 21 is provided with a moving sliding groove 17. One side of the moving piece 18 is slidably connected in the moving sliding groove 17, and the rotary spray gun 6 is connected with the moving piece 18. The second lead screw 20 is rotationally connected with the connecting frame 9, and the second lead screw 20 is threadedly connected with the moving piece 18. The third motor 19 is used to drive the second lead screw 20 to rotate. The design of the movement adjustment mechanism enables the rotary spray gun 6 to be flexibly adjusted in the horizontal direction, thereby accurately controlling the distance between the nozzle of the rotary spray gun 6 and the inner hole of the cylinder. By driving the second lead screw 20 to rotate through the third motor 19, fine control of the position of the rotary spray gun 6 can be achieved. The operator only needs to adjust the rotation direction and speed of the motor to conveniently move the nozzle left and right, improving the convenience of operation. The combination of the design of the moving piece 18 and the moving sliding groove 17 ensures that the rotary spray gun 6 remains stable during movement, avoiding deviation caused by movement. The connection design of the rotary spray gun 6 and the moving piece 18 enables the rotary spray gun 6 to achieve the best spraying distance when facing different cylinder holes, which can improve the spraying efficiency and ensure that the inner wall of each cylinder hole is evenly covered with molten material.

[0037] In a preferred embodiment, the third motor 19 is connected with the connecting plate 21, and a driving pulley is fixedly connected to the output shaft of the third motor 19. One end of the second lead screw 20 is fixedly connected with a driven pulley, and the driving pulley and the driven pulley are connected through a belt. The belt connection has the advantage of stable connection and transmission. More specifically, in this embodiment, the belt is a toothed belt, and the driving pulley and the driven pulley are both toothed pulleys. This design can ensure the stability of transmission.

[0038] In a preferred embodiment, the rotary spray gun 6 is detachably connected with the mounting seat 7. The detachable connection design facilitates the maintenance or replacement of the rotary spray gun 6 by the operator, improving the convenience of the equipment.

[0039] In the description of the utility model, need understanding is, the term "coaxial" "bottom" "one end" "top" "middle" "the other end" "upper" "one side" "top" "inner" "front" "central" "both ends" and so on indicate the orientation or positional relation based on the orientation or positional relation shown in the drawing, is only for the convenience of describing the utility model and simplifying the description, and is not indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore can not be understood as a limitation on the utility model.

[0040] In the utility model, unless another explicit provision and limitation, the term "installation" "arrangement" "connection" "fix" "screw" and so on should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication or the interaction relationship of two elements inside two elements, unless another explicit limitation, for the ordinary skilled person in the art, can understand the specific meaning of the above-mentioned term in the utility model according to the specific circumstances.

[0041] Although the embodiments of the utility model have been shown and described, for the ordinary skilled person in the art, it can be understood that the embodiments can be changed, modified, replaced and changed in various ways without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and its equivalents.

Claims

1. A thermal spraying device for the inner bore of a cylinder, characterized in that: It includes a workbench (4), a turntable (5), a rotary spray gun (6), a connecting frame (9), a sliding column (10), a moving adjustment mechanism (8), and a height adjustment mechanism (1); Among them, the turntable (5) is rotatably connected to the worktable (4), the sliding column (10) is fixedly connected to the worktable (4), and the connecting frame (9) is slidably connected to the sliding column (10) through the height adjustment mechanism (1). The height adjustment mechanism (1) is used to adjust the height of the connecting frame (9). The rotary spray gun (6) is connected to the connecting frame (9) via a movable adjustment mechanism (8). The movable adjustment mechanism (8) is used to move the rotary spray gun (6) so that the rotary spray gun (6) faces the turntable (5).

2. The cylinder internal bore thermal spraying device according to claim 1, characterized in that: The workbench (4) has a mating hole at the front of the middle section; the turntable (5) includes a rotating plate (11), a support base (13) and a first motor (12); the rotating plate (11) is rotatably connected to the workbench (4), the first motor (12) is connected to the support base (13), the output shaft of the first motor (12) is connected to the rotating plate (11), and the rotating plate (11) is set in the mating hole.

3. The cylinder internal bore thermal spraying device according to claim 2, characterized in that: A driven gear (24) is fixedly connected to the bottom of the rotating plate (11). The first motor (12) is connected to the support base (13). The output shaft of the first motor (12) is fixedly connected to the driving gear (23). The driving gear (23) meshes with the driven gear (24).

4. A cylinder internal bore thermal spraying device according to claim 2, characterized in that: Alignment marks are provided at the central circular position of the rotating plate (11).

5. A cylinder internal bore thermal spraying device according to claim 1, characterized in that: The height adjustment mechanism (1) includes a sliding sleeve (3), an intermediate plate (16), a first lead screw (15), and a second motor (14); wherein, the sliding sleeve (3) is movably sleeved on the outside of the sliding column (10), the sliding sleeve (3) and the intermediate plate (16) are both fixedly connected to the connecting frame (9), the first lead screw (15) is rotatably connected to the worktable (4), the first lead screw (15) is threadedly connected to the intermediate plate (16), and the second motor (14) is used to drive the first lead screw (15) to rotate.

6. The cylinder internal bore thermal spraying device according to claim 5, characterized in that: Several vertical T-slots (2) are provided on the outside of the sliding column (10), and several T-shaped connecting blocks are fixedly connected inside the sliding sleeve (3). The T-shaped connecting blocks are movably connected in the T-slots (2).

7. A cylinder internal bore thermal spraying device according to claim 5, characterized in that: A reinforcing column (22) is connected between the connecting frame (9) and the sliding sleeve (3), and the two ends of the reinforcing column (22) are fixedly connected to the connecting frame (9) and the sliding sleeve (3).

8. A cylinder internal bore thermal spraying device according to claim 1, characterized in that: The movable adjustment mechanism (8) includes a connecting plate (21), a movable part (18), a second lead screw (20), and a third motor (19); wherein, the connecting plate (21) is fixedly connected to the connecting frame (9), a movable slide groove (17) is provided in the middle of the connecting plate (21), one side of the movable part (18) is slidably connected in the movable slide groove (17), the rotating spray gun (6) is connected to the movable part (18), the second lead screw (20) is rotatably connected to the connecting frame (9), the second lead screw (20) is threadedly connected to the movable part (18), and the third motor (19) is used to drive the second lead screw (20) to rotate.

9. A cylinder internal bore thermal spraying device according to claim 8, characterized in that: The third motor (19) is connected to the connecting plate (21). The output shaft of the third motor (19) is fixedly connected to the driving pulley, and one end of the second lead screw (20) is fixedly connected to the driven pulley. The driving pulley and the driven pulley are connected by a belt.

10. A cylinder internal bore thermal spraying device according to claim 8, characterized in that: The rotary spray gun (6) is detachably connected to the mounting base (7).

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