A sheet metal spraying machine for the production of sports boats

Abstract

The present application relates to the field of motorboat production, and particularly relates to a sheet metal spraying machine for sports motorboat production. It comprises a base, a first spraying device, a second spraying device and a driving mechanism; the base is provided with the first spraying device and the second spraying device through the driving mechanism to slide left and right, wherein the top of the first spraying device is semicircular, and a plurality of first telescopic rods are arranged in the top in an axial rotation array, and adjacent first telescopic rods are staggered on the left and right sides; the second spraying device is provided with a lifting beam, and a turnover mechanism is arranged to turn over the lifting beam, and the lifting beam is provided with a plurality of second telescopic rods at equal intervals; the end of each first telescopic rod and second telescopic rod is provided with a spray head and a distance sensor, and the spray head is connected with a feeding device through a control pump. It automatically adjusts the distance between the spray head and the sheet metal surface through the detection signal of the distance sensor, and drives the spraying device to execute the spraying operation at a constant speed through the driving mechanism, thereby effectively solving the problem of spray head stability in the spraying process.

Description

Technical Field

[0001] This invention relates to the field of speedboat manufacturing, specifically a sheet metal spraying machine for producing sport speedboats. Background Technology

[0002] Spraying technology can be used to obtain coatings with wear-resistant, corrosion-resistant, heat-insulating, conductive, insulating, sealing, lubricating, and other special mechanical physical and chemical properties on sheet metal surfaces. In the production of sports speedboats, to ensure the corrosion resistance of the hull sheet metal, a corrosion-resistant coating is often applied using a spraying machine. Although existing spraying machines can complete the spraying operation, the streamlined shape of speedboats changes with the hull's position. Using traditional spraying machines, it is difficult to control the spraying distance and speed of the nozzle on the sheet metal surface during the spraying process, which can easily lead to uneven coating due to the nozzle focusing on one spot for too long. Uneven coating not only affects the product's appearance but also directly impacts its performance. Summary of the Invention

[0003] To address the shortcomings of the existing technology, this invention designs a sheet metal spraying machine that can improve the stability of the spray nozzle, thereby avoiding uneven spraying or paint accumulation, and ensuring coating quality and appearance.

[0004] This invention discloses a sheet metal spraying machine for producing sport speedboats, comprising a spray head and a feeding device as found in existing technologies, but differing in that it further includes a base, a first spraying device, a second spraying device, and a drive mechanism; the base slidably houses the first and second spraying devices, and is equipped with a drive mechanism for driving the first and second spraying devices to slide; the first spraying device includes a first movable base and a first telescopic rod, the top of the first movable base being semi-circular, and several first telescopic rods are arranged in a rotating array around an axis on the left and right sides of the first movable base, with adjacent first telescopic rods on the left and right sides staggered; the second spraying device includes a second movable base, a lifting mechanism, a lifting block, a crossbeam, and a second telescopic rod. The second movable base can be equipped with a lifting block via a lifting mechanism. The lifting block is rotatably mounted with a crossbeam. A flipping mechanism is provided between the lifting block and the crossbeam. Several second telescopic rods are evenly spaced at the bottom of the crossbeam. The base is equipped with a feeding device. Each first and second telescopic rod has a nozzle and a distance sensor at its end. Each nozzle is connected to the feeding device via a control pump. The first and second telescopic rods are respectively connected to their corresponding distance sensors and control pumps. When the first or second telescopic rod is extended, the distance sensor is activated simultaneously. When the distance sensor detects a set distance, the corresponding first or second telescopic rod stops extending, and the control pump is turned on, and the nozzle begins spraying.

[0005] Furthermore, the drive mechanism includes an electric lead screw, a lead screw female seat, a second lead screw female seat, a female seat fixing bushing, a bearing, and an electric pin; the front and rear sides of the base are respectively provided with transverse electric lead screws, and the front and rear sides of the first movable base are respectively provided with lead screw female seats that cooperate with the electric lead screws; the front and rear sides of the second movable base are respectively provided with second lead screw female seats that cooperate with the electric lead screws, and a female seat fixing bushing is provided between the second lead screw female seat and the second movable base. The second lead screw female seat is centrally fitted through the female seat fixing bushing, and the female seat fixing bushing is rotatably mounted on the second movable base; the outer surface of the female seat fixing bushing is provided with a plurality of slots arranged in a axial rotational array, and an electric pin that cooperates with the slots is fixedly installed inside the second movable base; the second movable base is provided with a limit switch that cooperates with the top of the lifting block, and the second movable base is provided with a second limit switch that cooperates with the first movable base.

[0006] Furthermore, the lifting mechanism includes a second electric lead screw and a third lead screw base. The second movable base is provided with a second electric lead screw in the vertical direction. The lifting block is connected to the second electric lead screw through the third lead screw base. The flipping mechanism is a flipping motor. The flipping motor is fixedly installed inside the crossbeam, and the rotation shaft of the flipping motor is fixedly connected to the lifting block.

[0007] Furthermore, the sheet metal spraying machine also includes a worktable and a second lifting mechanism. The base is equipped with the second lifting mechanism, and the top of the second lifting mechanism is equipped with the worktable.

[0008] Furthermore, a telescopic plate is retractably provided on the left side of the workbench, and the workbench is provided with a second drive mechanism to drive the telescopic plate to extend and retract.

[0009] Furthermore, the second driving mechanism includes a drive motor and a drive gear. The worktable is fixedly equipped with the drive motor, the drive shaft of the drive motor is fixedly equipped with the drive gear, and the telescopic plate is equipped with a rack that meshes with the drive gear.

[0010] Furthermore, the sheet metal spraying machine also includes a folding cover, which is slidably mounted on the base.

[0011] Furthermore, the folding cover is provided with a transparent observation window.

[0012] Furthermore, a heat lamp is provided on the inner side of the folded protective cover.

[0013] The beneficial effects of this invention are: compared with the prior art, it can automatically adjust the distance between the nozzle and the sheet metal surface according to the shape of the speedboat, and drive the spraying device to perform spraying operations at a uniform speed through the drive mechanism, effectively solving the nozzle stability problem in the spraying process and avoiding product appearance problems and other quality problems caused by paint accumulation or unevenness. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front view of the present invention; Figure 3 This is the left view of the present invention; Figure 4 This is a schematic diagram of the structure of the first spraying device in this invention; Figure 5 This is a left sectional view of the second spraying device in this invention; Figure 6 This is a front cross-sectional view of the second spraying device in this invention.

[0015] In the diagram: 1. Spray nozzle; 2. Feeding device; 3. Base; 4. First spraying device; 4. First movable base; 401. First telescopic rod; 402. Second spraying device; 5. Second movable base; 501. Lifting groove; 5011. Lifting mechanism; 502. Second electric lead screw; 5021. Third lead screw female seat; 5022. Lifting block; 503. Crossbeam; 504. Tilting mechanism; 505. Second telescopic rod; 506. Limit switch; 507. Second limit switch; 508. Drive mechanism; 6. Electric lead screw 601, lead screw female seat 602, second lead screw female seat 603, female seat fixing bushing 604, slot 6041, bearing 605, electric plug 606, guide rod 607, bushing 608, distance sensor 7, worktable 8, second lifting mechanism 801, telescopic plate 802, rack 8021, second drive mechanism 803, motor 8031, drive gear 8032, folding cover 9, observation window 901, heating lamp 902, hull 10. Detailed Implementation

[0016] To better understand this invention, the following is combined with... Figures 1 to 6 The embodiments of the present invention will be explained in detail below.

[0017] It should be noted that the directions "front, back, left, right, up, down" mentioned in the text are all relative to the direction of the text. Figure 1 The directions are based on "front, back, left, right, up, and down".

[0018] This invention relates to a sheet metal spraying machine for producing sport speedboats, such as... Figures 1 to 3 The diagram shows a sheet metal painting machine that includes a nozzle 1 and a feeding device 2, as in the prior art. The difference is that this machine also includes a base 3, a first painting device 4, a second painting device 5, and a drive mechanism 6. Figure 4As shown, the first spraying device 4 includes a first movable base 401 and a first telescopic rod 402. The top of the first movable base 401 is semi-circular. A plurality of first telescopic rods 402 are welded to the first movable base 401 in a rotating array around its axis. The output ends of the first telescopic rods 402 face the top axis of the first movable base 401. When the first telescopic rods 402 are extended, the ends of all the first telescopic rods 402 converge towards the axis. Figure 5 As shown, the second spraying device 5 includes a second movable base 501, a lifting mechanism 502, a lifting block 503, a crossbeam 504, a flipping mechanism 505, and a second telescopic rod 506. The second movable base 501 can be raised and lowered by the lifting mechanism 502 to set the lifting block 503. The lifting block 503 can be rotatably set to the crossbeam 504. The flipping mechanism 505 is set between the lifting block 503 and the crossbeam 504. Several second telescopic rods 506 are evenly spaced at the bottom of the crossbeam 504.

[0019] The base 3 is fixedly equipped with the feeding device 2. Each of the first telescopic rods 402 and 506 has a nozzle 1 (a straight fan-shaped nozzle) and a distance sensor 7 (an infrared distance sensor, prior art) at its end. Each nozzle 1 is connected to the feeding device 2 via a control pump. The first telescopic rod 402 and 506 are respectively connected to their corresponding distance sensor 7 and control pump. The first telescopic rod 402 and 506 are electrically operated telescopic rods, achieving extension and retraction through electric drive.

[0020] Since the nozzle 1 uses a straight fan-shaped nozzle, in order to ensure that adjacent nozzles 1 do not interfere with each other, such as Figure 4 As shown, the first telescopic rod 402 is disposed on the left and right sides of the first movable base 401, and the adjacent first telescopic rods 402 on the front and rear sides are staggered. Normally, all first telescopic rods 402 and second telescopic rods 506 are in a retracted state. When spraying is required, the first telescopic rod 402 or the second telescopic rod 506 is extended, and the distance sensor 7 is simultaneously activated, using its own distance sensor 7 to locate its own spraying point. When the distance sensor 7 detects a set distance (e.g., 30cm from the sheet metal surface), the corresponding first telescopic rod 402 or second telescopic rod 506 stops extending, and simultaneously controls the pump to turn on, and the nozzle 1 begins spraying.

[0021] like Figures 1 to 6As shown, the drive mechanism 6 includes an electric lead screw 601, a lead screw female seat 602, a second lead screw female seat 603, a female seat fixing sleeve 604, a bearing 605, and an electric pin 606. A transverse electric lead screw 601 is installed on the front and rear sides of the base 3. Lead screw female seats 602 that cooperate with the electric lead screw 601 are respectively provided on the front and rear sides of the first movable base 401. Second lead screw female seats 603 that cooperate with the electric lead screw 601 are respectively provided on the front and rear sides of the second movable base 501. A female seat fixing sleeve 604 is provided between the second lead screw female seat 603 and the second movable base 501. A second lead screw female seat 603 is fixedly embedded in the center of the female seat fixing sleeve 604. The second movable base 501 has a sleeve hole that cooperates with the female seat fixing sleeve 604, allowing the female seat fixing sleeve 604 to be rotatably disposed within the sleeve hole of the second movable base 501. The outer surface of the female seat fixing bushing 604 is provided with a plurality of slots 6041 arranged in a rotatable array around an axis. An electric pin 606, which mates with the slots 6041, is fixedly disposed within the second movable base 501. Under normal conditions, the pin end of the electric pin 606 is inserted into the slot 6041, preventing the female seat fixing bushing 604 from rotating on the second movable base 501 via the bearing 605. When the pin end of the electric pin 606 retracts from the slot 6041, the female seat fixing bushing 604, freed from its restriction, rotates freely within the second movable base 501 via the bearing 605. The first spraying device 4 and the second spraying device 5 are respectively slidably mounted on the base 3 via a drive mechanism 6, and the left and right movement of the first spraying device 4 and the second spraying device 5 is controlled by the operation of the drive mechanism 6.

[0022] like Figure 5 As shown, the lifting mechanism 502 includes a second electric lead screw 5021 and a third lead screw female seat 5022. The second movable base 501 is provided with a lifting groove 5011 that cooperates with the lifting block 503. The second electric lead screw 5021 in the vertical direction is provided in the lifting groove 5011. The lifting block 503 is connected to the second electric lead screw 5021 by fixing the third lead screw female seat 5022. The flipping mechanism 505 is a flipping motor (rotatable angle motor). The flipping motor is fixedly installed in the crossbeam 504, and the rotation shaft of the flipping motor is fixedly connected to the lifting block 503. The second movable base 501 is located at the top of the lifting groove 5011 and has a built-in limit switch 507 that cooperates with the top of the lifting block 503. When the limit switch 507 is triggered, the electric plug 606 closes, and the electric lead screw 601 runs. In order to improve and reduce the burden on the drive mechanism 6, such as Figure 1 As shown, a parallel guide rod 607 is fixedly welded above each electric lead screw 601, and bushings 608 that mate with the guide rod 607 are simultaneously fixedly installed on the first movable base 401 and the second movable base 501. Figure 6 As shown, the left side of the bushing 608 on which the second movable base 501 is mounted extends out and is fixedly embedded with a second limit switch 508 that cooperates with the first movable base 401. The second limit switch 508 is used to determine the position of the first movable base 401.

[0023] When it is necessary to spray paint the top or right side of the speedboat hull, the second spraying device 5 is used. The crossbeam 504 adjusts its angle via a tilting mechanism, so that the telescopic end of the second telescopic rod 506 is facing downwards or to the left. The crossbeam 504 is then raised to the position of the limit switch 507 via the lifting mechanism 502. In this state, the second limit switch 508 is closed. After the second telescopic rod 506, in conjunction with the distance sensor 7, determines the spraying point of the nozzle 1, the second spraying device 5 is finally sprayed onto the top surface of the hull by the nozzle 1 as the drive mechanism 6 drives the second spraying device 5 to move from right to left.

[0024] Considering that the shape and size of speedboat hulls vary depending on the model, when spraying the bottom surface of the hull, a large deviation from the axis of the first spraying device 4 will hinder the first telescopic rod 402 of the first spraying device 4 from quickly determining the spraying point. Similarly, when spraying the top surface of the hull, if the distance from the top surface is too far, the second telescopic rod 506 of the second spraying device 5 will also be unable to quickly determine the spraying point, thus reducing work efficiency. Therefore, if... Figures 1 to 3 As shown, the sheet metal spraying machine also includes a worktable 8 and a second lifting mechanism 801. The base 3 is equipped with the second lifting mechanism 801 (hydraulic lifting scissor fork), and the worktable 8 is mounted on top of the second lifting mechanism 801. The distance between the hull and the nozzle 1 can be adjusted by using the liftable worktable 8, so that the hull of the speedboat is in the optimal position with the first telescopic rod 402 and the second telescopic rod 506, allowing the nozzle 1 to be quickly positioned and put into operation, thus improving work efficiency.

[0025] Since the hull requires painting on both sides, a telescopic plate 802 is retractably installed on the left side of the workbench 8 to facilitate disassembly of the hull. A second drive mechanism 803 is fixedly installed on the workbench to drive the telescopic plate 802 to extend and retract. Figure 3As shown, the second drive mechanism 803 includes a drive motor 8031 ​​and a drive gear 8032. A drive motor 8031 ​​is fixedly mounted on the workbench 8, and a drive gear 8032 is fixedly connected to the drive shaft of the drive motor 8031. A rack 8021, meshing with the drive gear 8032, is welded to the bottom of the telescopic plate 802. When the speedboat's hull needs to be painted, the second lifting mechanism 801 lowers to its lowest point. Simultaneously, the drive motor 8031 ​​drives the rack 8021 via the drive gear 8032, causing the telescopic plate 802 to extend from the left side of the workbench 8, facilitating the worker to fix the hull onto the telescopic plate 802 (the hull can be fixed using fixtures).

[0026] To avoid environmental pollution during the painting process, the sheet metal painting machine also includes a folding protective cover 9, such as... Figures 1 to 3 As shown, the folding protective cover 9 is composed of multiple layers and is slidably mounted on the base 3. Normally, the folding protective cover 9 is folded, but it is opened during spraying to function as a protective cover. For easy observation of the interior, the folding protective cover 9 is equipped with a transparent observation window 901. To allow the sprayed coating to cool quickly, a heat lamp 902 is installed on the inner side of the folding protective cover 9.

[0027] The working principle and steps of this invention: When the hull 10 is as Figure 2 When fixed with the bottom surface facing upwards as shown, the painting operations on the right side and bottom surface of the hull 10 can be completed simultaneously, and are achieved sequentially by the second painting device 5 and the first painting device 4, respectively. First, the first painting device 4 and the second painting device 5 move to the right end of the worktable 8 by rotating the electric screw 601. Then, the crossbeam 504 adjusts its angle through the flipping mechanism 505, so that the extended end of the second telescopic rod 506 is in a lateral left-facing state, while the crossbeam 504 rises to the middle position of the lifting groove 5011 through the lifting mechanism 502. Next, the second telescopic rod 506 on the crossbeam 504 begins to extend, and at the same time, the electric screw 601 drives the first painting device 4 and the second painting device 5 to approach the right side of the hull 10 until the distance sensor 7 detects that the set distance has been reached and stops. At the same time, the crossbeam 504 also descends to the bottom of the lifting groove 5011 through the lifting mechanism 502. During the process of the lifting mechanism 502 driving the crossbeam 504 to rise, the second telescopic rod 506 and the distance sensor 7 work together to continuously determine the spraying point of the nozzle 1 based on the sheet metal surface of the hull. Finally, as the lifting mechanism 502 rises from the bottom, the right side of the hull is sprayed using the nozzle 1.

[0028] After the right side is painted, the crossbeam 504 rises to the top of the lifting groove 5011, triggering the limit switch 507, indicating that the painting operation on the right side is complete. At this time, the pin end of the electric plug 606 retracts, releasing the restriction on the slot 6041, allowing the female seat fixed bushing 604 to rotate freely in the second moving base 501 via the bearing. This causes the transmission capacity between the second lead screw female seat 603 and the electric lead screw 601 to be lost. At this time, the electric lead screw 601 rotates, the first painting device 4 moves normally, and the second painting device 5 remains stationary. The first painting device 4 continues to perform the painting operation on the bottom surface of the hull 10. When the limit switch 507 is triggered, the first telescopic rod 402 on the first moving base 401 begins to open. During this period, the first telescopic rod 402 works in conjunction with the distance sensor 7 to determine the spraying point of the nozzle 1. Driven by the electric lead screw 601, the first spraying device 4 begins to move and spray the hull from right to left. During this process, the nozzle 1 continuously adjusts the spraying point according to the changes in the hull shape to ensure the spraying effect. The spraying stops when the first telescopic rod 402 reaches its maximum extension stroke, indicating that the bow section has also been sprayed. When the first telescopic rod 402 reaches half of its extension stroke, it indicates that the spraying operation on the bow section has begun. At this time, the first telescopic rod 402 on the right side, along with its corresponding nozzle 1 and distance sensor 7, stops working, and the remaining spraying operation is completed by the first telescopic rod 402 on the left side, avoiding an excessively thick coating caused by overly dense nozzle distribution. After the bottom painting operation is completed, the first painting device 4 will move to the right via the electric screw 601 until the second limit switch is triggered. The electric screw 601 will then stop driving, indicating that the first painting device 4 has been reset. The pin end of the electric plug 606 will extend again and insert into the slot 6041, so that the female seat fixing bushing 604 will be fixed again on the second moving base 501. At this time, the second painting device 5 will regain the ability to move left and right via the electric screw 601.

[0029] After the right side and bottom of the hull are painted, the top surface of the speedboat needs to be painted, which is done by the second painting device 5. First, the crossbeam 504 adjusts its angle through the tilting mechanism, so that the second telescopic rod 506 is in a vertically downward state. The crossbeam 504 is then raised to the trigger limit switch 507 via the lifting mechanism 502. With the second telescopic rod 506 in a vertically downward state, the second limit switch 508 is in the closed state. The first painting device 4 and the second painting device 5 move synchronously, and no longer need to determine their positions. Then, through the cooperation of the second telescopic rod 506 and the distance sensor 7, the spraying point of the nozzle 1 is determined. Finally, as the electric screw 601 drives the first painting device 4 and the second painting device 5 to move from right to left, the nozzle 1 of the second painting device 5 paints the top surface of the hull.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A sheet metal spraying machine for producing sport speedboats, comprising a spray nozzle (1) and a feeding device (2), characterized in that: It also includes a base (3), a first spraying device (4), a second spraying device (5), and a drive mechanism (6); the base (3) is slidably arranged with the first spraying device (4) and the second spraying device (5) to the left and right, and is provided with a drive mechanism (6) to drive the first spraying device (4) and the second spraying device (5) to slide; the first spraying device (4) includes a first movable base (401) and a first telescopic rod (402), the top of the first movable base (401) is semi-circular, and several first telescopic rods (402) are arranged in an axial rotation array on the left and right sides of the first movable base (401), and the adjacent first telescopic rods (402) on the left and right sides are staggered; the second spraying device (5) includes a second movable base (501), a lifting mechanism (502), a lifting block (503), and a crossbeam (504). The base (3) is equipped with a flipping mechanism (505) and a second telescopic rod (506). The second movable base (501) can be equipped with a lifting block (503) through a lifting mechanism (502). The lifting block (503) can be rotatably equipped with a crossbeam (504). A flipping mechanism (505) is set between the lifting block (503) and the crossbeam (504). Several second telescopic rods (506) are evenly spaced at the bottom of the crossbeam (504). The base (3) is equipped with a feeding device (2). Each first telescopic rod (402) and second telescopic rod (506) is equipped with a nozzle (1) and a distance sensor (7) at the end. Each nozzle (1) is connected to the feeding device (2) through a control pump. The first telescopic rod (402) and the second telescopic rod (506) are respectively connected to their corresponding distance sensor (7) and control pump. The drive mechanism (6) includes an electric lead screw (601), a lead screw female seat (602), a second lead screw female seat (603), a female seat fixing bushing (604), a bearing (605), and an electric pin (606); the base (3) has transverse electric lead screws (601) respectively arranged on its front and rear sides, and the first movable base (401) has lead screw female seats (602) respectively arranged on its front and rear sides to cooperate with the electric lead screws (601); the second movable base (501) has second lead screw female seats (603) respectively arranged on its front and rear sides to cooperate with the electric lead screws (601), and a female seat fixing bushing is arranged between the second lead screw female seat (603) and the second movable base (501). The sleeve (604) has a second lead screw female seat (603) inserted through its center. The female seat fixed bushing (604) is rotatably mounted on the second movable base (501). The outer surface of the female seat fixed bushing (604) is provided with a plurality of slots (6041) arranged in a axial rotational array. An electric pin (606) that cooperates with the slots (6041) is fixedly installed in the second movable base (501). The second movable base (501) is provided with a limit switch (507) that cooperates with the top of the lifting block (503). The second movable base (501) is provided with a second limit switch (508) that cooperates with the first movable base (401). When the bottom surface of the hull (10) is fixed facing upwards, the painting operations on the right side and bottom surface of the hull (10) can be completed simultaneously, and are achieved sequentially by the second painting device (5) and the first painting device (4) respectively. When the first telescopic rod (402) reaches half of its extension stroke, it indicates that the spraying operation of the bow section has begun. At this time, the first telescopic rod (402) on the right side and its corresponding nozzle (1) and distance sensor (7) stop working, and the remaining spraying operation is completed by the first telescopic rod (402) on the left side. After the right side and bottom of the hull (10) are painted, the top surface of the hull (10) is painted by the nozzle (1) of the second painting device (5).

2. The sheet metal spraying machine for producing sport speedboats as described in claim 1, characterized in that: The sheet metal spraying machine also includes a workbench (8) and a second lifting mechanism (801). The base (3) is provided with the second lifting mechanism (801), and the workbench (8) is provided on the top of the second lifting mechanism (801).

3. The sheet metal spraying machine for producing sport speedboats as described in claim 2, characterized in that: The workbench (8) has a telescopic plate (802) that can be extended and retracted on the left side, and the workbench is provided with a second drive mechanism (803) that drives the telescopic plate (802) to extend and retract.

4. The sheet metal spraying machine for producing sport speedboats as described in claim 3, characterized in that: The second drive mechanism (803) includes a drive motor (8031) and a drive gear (8032). The worktable (8) is fixedly equipped with the drive motor (8031), and the drive shaft of the drive motor (8031) is fixedly equipped with the drive gear (8032). The telescopic plate (802) is equipped with a rack (8021) that meshes with the drive gear (8032).

5. The sheet metal spraying machine for producing sport speedboats as described in claim 1, characterized in that: The sheet metal spraying machine also includes a folding cover (9), which is slidably mounted on the base (3).

6. The sheet metal spraying machine for producing sport speedboats as described in claim 5, characterized in that: The folding cover (9) is provided with a transparent observation window (901).

7. The sheet metal spraying machine for producing sport speedboats as described in claim 6, characterized in that: A heat lamp (902) is provided on the inside of the folded protective cover (9).

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