Cutting device for shipbuilding

Abstract

The invention relates to the technical field of ship cutting, and discloses a cutting device for ship manufacturing, which comprises a support plate, a mounting plate arranged at the upper end of the support plate and a cutting unit arranged on the mounting plate, and the cutting unit comprises an intermittent part and an alignment part which are arranged on the mounting plate; materials are precisely conveyed to the preset cutting length through the conveying belt and then shut down, synchronous locking is achieved in cooperation with the lower clamping mechanism, the position deviation caused by inertia slippage and gravity sagging of the materials can be effectively eliminated, it is ensured that the cutting size precision is stable, the industry pain point that the fixed-length cutting error of thick plates and long-strip-shaped sectional materials is large in shipbuilding is solved, and the production efficiency is improved. And the high-precision assembly requirement of hull components is met.

Description

Technical Field

[0001] This invention relates to the technical field of ship cutting, and more particularly to a cutting device for ship manufacturing. Background Technology

[0002] Shipbuilding cutting equipment is the core equipment for achieving efficient and precise steel cutting in shipbuilding. Its development is closely related to the shipbuilding industry's demand for processing large-size, high-precision, and complex components, and it is a key technological carrier for promoting shipbuilding efficiency and quality improvement. Shipbuilding is based on a large amount of steel plates, profiles, and pipes. Hull sections, decks, cabins, and piping components all need to be cut into shape, and welding bevels and assembly line markings need to be processed simultaneously. The cutting process runs through the entire process, with a large workload and stringent process requirements. Currently, the cutting equipment used in shipbuilding mainly includes CNC flame cutting machines, plasma cutting machines, and laser cutting machines. Although automated cutting operations have been achieved, solving the problems of low precision, poor efficiency, and high labor intensity of traditional manual cutting, key technical defects still exist in practical applications. The most prominent one is that continuous feeding cannot be achieved during the cutting process, which seriously restricts the improvement of production efficiency.

[0003] Existing cutting devices mostly use intermittent feeding methods. This means that after a batch of steel is cut in a single feeding cycle, the machine must be stopped, and the cut workpieces must be removed manually or using simple equipment. Then, new steel to be cut must be placed and positioned. This feeding interval consumes a significant amount of time, causing the cutting device to frequently stop and wait for new material, making continuous and efficient cutting operations impossible. This is especially problematic in large shipbuilding, where the batches of steel to be cut are large and vary in size and specifications. Intermittent feeding not only significantly reduces the effective operating time of the cutting device and increases manual intervention costs, but also easily affects cutting accuracy due to multiple stops and feeding positioning deviations. It is difficult to meet the high-efficiency, high-volume, and precise production demands of modern intelligent shipbuilding manufacturing. This shortcoming is particularly pronounced when multi-segment equidistant cutting of steel plates is required. Therefore, there is an urgent need to develop a shipbuilding cutting device that can solve the aforementioned defects of continuous feeding and compensate for the deficiencies of existing technologies. Summary of the Invention

[0004] In view of the problem that the existing technology cannot continuously feed materials, resulting in low production efficiency, a cutting device for shipbuilding is proposed.

[0005] This application provides a cutting device for shipbuilding, the purpose of which is to: accurately transport materials to the preset cutting length via a conveyor belt and then stop the machine, and lock them synchronously with the clamping mechanism below, which can effectively eliminate the positional deviation caused by material slippage due to inertia and gravity, ensure stable cutting dimensional accuracy, solve the industry pain point of large fixed-length cutting errors of thick plates and long profiles in shipbuilding, and meet the high-precision assembly requirements of hull components.

[0006] The technical solution of the present invention is as follows: a cutting device for shipbuilding, comprising a support plate, a mounting plate disposed on the upper end of the support plate, and a cutting unit disposed on the mounting plate, wherein the cutting unit comprises an intermittent component and an alignment component disposed on the mounting plate; The intermittent component includes two rotating shafts mounted on the mounting plate, a drive gear and a transmission gear respectively mounted on the outer walls of the upper and lower rotating shafts, a mounting shaft mounted on the side wall of the mounting plate, a rotating connecting rod mounted on the upper end of the mounting shaft, two movable seats mounted on the side wall of the mounting plate, sliding blocks respectively mounted inside the two movable seats, and a connecting shaft mounted on the side wall of the sliding blocks. The two connecting shafts are rotatably connected to the corresponding rotating connecting rods, and the drive gear and the transmission gear mesh with each other. The intermittent component also includes a drive shaft disposed on the outer wall of the drive gear and the transmission gear, a drive groove opened on the outer wall of the two rotating connecting rods, the two drive shafts being located inside the corresponding drive grooves, a support plate disposed on the side wall of the mounting plate, a drive motor disposed on the upper end of the support plate, the drive end of the drive motor being fixedly connected to one end of the rotating shaft, and a cutting component being mounted on the sliding block located above.

[0007] Furthermore, the cutting assembly includes an extension plate disposed at the lower end of the upper sliding block, and a cutting machine disposed at the lower end of the extension plate.

[0008] Furthermore, the alignment component includes a vertical plate disposed on the upper end of the sliding block located below, a vent plate disposed on the upper end of the vertical plate, and a plurality of support plates disposed on the upper end of the vent plate, wherein a fixing assembly is installed between the plurality of support plates and the vent plate.

[0009] Furthermore, the fixing component includes mounting grooves respectively opened on the side walls of multiple support plates, an expansion rubber disposed in the mounting groove, a fixing block slidably disposed inside the mounting groove, the side wall of the expansion rubber being fixedly connected to the side wall of the fixing block, and an air pumping element being installed between the vent plate and the mounting plate.

[0010] Furthermore, the air-inflating element includes an air-inflating box disposed on the upper end of the air-inflating plate, a piston plate slidably disposed on the inner wall of the air-inflating box, a piston rod disposed on the upper end of the piston plate, and a pressure plate disposed on the side wall of the mounting plate, wherein the lower end of the pressure plate is fixedly connected to the upper end of the piston rod.

[0011] Furthermore, a connecting pipe is installed between the lower end of the air box and the vent plate, and the multiple expanding rubbers are interconnected with the interior of the vent plate.

[0012] Furthermore, the cutting unit also includes a feeding component, which includes multiple support rods disposed on the upper end of the support plate, two conveyor belts disposed on the upper ends of the multiple support rods, and a gap between the two conveyor belts. The cutting machine and the support plate are both located at the gap.

[0013] Furthermore, the conveyor belt is equipped with a conveyor roller, one end of which is fixedly connected to a servo motor. Each time the conveyor roller rotates a set angle, the servo motor stops intermittently once.

[0014] The beneficial effects of this invention are: 1. By leveraging the continuous conveying characteristics of the conveyor belt, the intermittent motion of the cutting machine, and the synchronous action of the clamping mechanism, a coordinated linkage is formed, breaking through the downtime bottleneck of traditional intermittent feeding. This achieves automated continuous flow of "conveyance-positioning-clamping-cutting," significantly improving the effective operating rate of the cutting device and meeting the production needs of large-volume steel cutting in shipbuilding. The conveyor belt conveying mode is compatible with shipbuilding steel (steel plates, profiles) of different widths and thicknesses. The clamping mechanism can adaptively lock according to material specifications. Combined with programmable intermittent motion control logic, the cutting length and rhythm can be flexibly adjusted without changing specialized tooling, reducing production changeover costs and meeting the diverse, small-batch flexible production needs of modern intelligent shipbuilding.

[0015] 2. By applying force from below to lock the material through the clamping mechanism, a two-way limit is formed with the conveyor belt, which can effectively resist the thermal stress impact generated by flame, plasma or laser cutting during the cutting process, avoid material warping and vibration, reduce burrs and bevel deformation of the cut, and at the same time prevent the risk of equipment collision caused by material displacement during high-speed cutting, and extend the service life of core components such as the cutting machine guide rail and cutting torch.

[0016] 3. The entire process of conveying, positioning, clamping, and cutting is completed automatically, eliminating the need for manual positioning and material clamping. This significantly reduces the labor intensity of operators and avoids direct contact between personnel and moving parts and high-temperature cutting areas, fundamentally reducing safety accidents such as mechanical injuries and burns, and conforming to the safety production standards of shipbuilding workshops. Attached Figure Description

[0017] Figure 1 This is a first-view three-dimensional structural diagram of the present invention; Figure 2 For the present invention Figure 1 Frontal view of the planar structure diagram; Figure 3 For the present invention Figure 1 Side view plan view of the structure; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the intermittent component structure of the present invention; Figure 6 This is a schematic diagram of the alignment component structure of the present invention; Figure 7 This is a schematic diagram of the fixed component structure of the present invention.

[0018] In the picture: 1. Support plate; 2. Mounting plate; 101. Rotating shaft; 102. Drive gear; 103. Transmission gear; 104. Mounting shaft; 105. Rotating connecting rod; 106. Movable seat; 107. Sliding block; 108. Connecting shaft; 201. Drive shaft; 202. Bearing plate; 203. Drive motor; 204. Extension plate; 205. Cutting machine; 301. Vertical plate; 302. Ventilation plate; 303. Support plate; 304. Expanding rubber; 305. Fixing block; 401. Air inflator box; 402. Piston plate; 403. Piston rod; 404. Pressure plate; 405. Connecting pipe; 501. Support rod; 502. Conveyor belt. Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Example 1, referring to Figures 1-5 The first embodiment of the present invention provides a cutting device for shipbuilding, including a support plate 1, a mounting plate 2 fixedly mounted on the upper end of the support plate 1, and a cutting unit mounted on the mounting plate 2. The cutting unit includes an intermittent component and an alignment component mounted on the mounting plate 2.

[0021] The intermittent component includes two rotating shafts 101 rotatably mounted on the mounting plate 2, a drive gear 102 and a transmission gear 103 respectively fixedly mounted on the outer walls of the upper and lower rotating shafts 101, a mounting shaft 104 fixedly mounted on the side wall of the mounting plate 2, a rotating connecting rod 105 rotatably mounted on the upper end of the mounting shaft 104, two movable seats 106 fixedly mounted on the side wall of the mounting plate 2, sliding blocks 107 respectively slidably mounted inside the two movable seats 106, and a connecting shaft 108 fixedly mounted on the side wall of the sliding block 107. The two connecting shafts 108 are rotatably connected to the corresponding rotating connecting rods 105.

[0022] The intermittent component also includes a drive shaft 201 fixedly mounted on the outer wall of the drive gear 102 and the transmission gear 103, drive slots formed on the outer wall of the two rotating connecting rods 105, with the two drive shafts 201 located inside their respective drive slots, a support plate 202 fixedly mounted on the side wall of the mounting plate 2, a drive motor 203 fixedly mounted on the upper end of the support plate 202, the drive end of the drive motor 203 being fixedly connected to one end of the rotating shaft 101, and a cutting assembly mounted on the upper sliding block 107. The cutting assembly includes an extension plate 204 fixedly mounted on the lower end of the upper sliding block 107, and a cutting machine 205 fixedly mounted on the lower end of the extension plate 204.

[0023] Specifically, by designing the driving mechanism of the drive gear 102, rotating connecting rod 105, sliding block 107, and connecting shaft 108, the cutting machine 205 can intermittently cut the material to be cut, ensuring that the material has sufficient time to move to the designated position before being cut by the cutting machine 205. The cutting machine 205 uses intermittent reciprocating motion to cut the material to be cut, which can achieve precise coordination between motion and cutting. Its advantages are: adapting to fixed-length cutting requirements, when the cutting machine 205 starts reciprocating cutting, during the reciprocating motion after the cutting is completed, it can wait for the next batch of material to be fed and positioned, avoiding deviation caused by the superposition of cutting and feeding, ensuring that the size of each cut piece is uniform, and meeting the standardized processing requirements of ship components.

[0024] Reciprocating motion cutting can effectively improve the stability of cutting quality. Intermittent reciprocating motion can keep the cutting machine 205 running at a uniform speed and smoothly during the cutting stage. At the same time, it is suitable for batch continuous operation. Intermittent reciprocating motion can form a closed loop with the process of "feeding-clamping and fixing-cutting-unloading", realizing the automated continuous cutting of batch steel. It not only solves the efficiency bottleneck of traditional intermittent feeding, but also takes into account cutting accuracy and operational safety, and is suitable for the batch production needs of modern ship intelligent manufacturing.

[0025] During operation, when the equipment is started, the drive motor 203 drives the rotating shaft 101 to rotate through the drive end. The rotating shaft 101 drives the drive gear 102 on its outer wall to rotate synchronously. During the rotation, the drive gear 102, through the interaction between the drive shaft 201 and the drive groove on the outer wall, generates extrusion force on the rotating connecting rod 105 in different directions, causing the rotating connecting rod 105 to move with the extrusion force. During the movement, the rotating connecting rod 105 generates tension force on the sliding block 107 inside the movable seat 106 in different directions. Because the horizontal direction of the sliding block 107 is limited by the movable seat 106, when the sliding block 107 is subjected to the tension force of the rotating connecting rod 105, it will only reciprocate in the vertical direction inside the movable seat 106. When the sliding block 107 moves downward to the lowest point, the cutting machine 205 at its lower end completes the cutting of the material. When the sliding block 107 moves upward, it will not come into contact with the material. At this time, the material moves a certain distance horizontally to ensure that the material itself is in the specified size for the next cut.

[0026] Example 2, refer to Figures 3-7 This is a second embodiment of the present invention, which differs from the first embodiment in that: the alignment component includes a vertical plate 301 fixedly installed on the upper end of the sliding block 107 located below, a vent plate 302 fixedly installed on the upper end of the vertical plate 301, and multiple support plates 303 fixedly installed on the upper end of the vent plate 302. A fixing assembly is installed between the multiple support plates 303 and the vent plate 302. The fixing assembly includes mounting grooves respectively formed on the side walls of the multiple support plates 303, an expansion rubber 304 fixedly installed in the mounting groove, and a fixing block 305 slidably installed inside the mounting groove. The side wall of the expansion rubber 304 is fixedly connected to the side wall of the fixing block 305. An air-inflating element is installed between the vent plate 302 and the mounting plate 2. The air-inflating element includes an air-inflating box 401 fixedly installed on the upper end of the air-venting plate 302, a piston plate 402 slidably installed on the inner wall of the air-inflating box 401, a piston rod 403 fixedly installed on the upper end of the piston plate 402, and a pressure plate 404 fixedly installed on the side wall of the mounting plate 2. The lower end of the pressure plate 404 is fixedly connected to the upper end of the piston rod 403. A connecting pipe 405 is installed between the lower end of the air-inflating box 401 and the air-venting plate 302. Multiple expanding rubbers 304 are interconnected with the interior of the air-venting plate 302.

[0027] Specifically, the alignment component is used to fix and limit the material to be cut before cutting. Since the material to be cut may have displacement and deviation during the movement, which will affect the subsequent cutting, by setting the alignment component, when the cutting machine 205 cuts the material to be cut, the alignment component can quickly fix and limit the material to be cut, ensuring that the material is automatically fixed and limited before each cut, thereby improving the stability and cutting quality during the cutting process.

[0028] By setting up an alignment component, the alignment component automatically positions and fixes the material to be cut before each cutting, enabling coordinated operation of feeding, positioning, and cutting. The advantages are: precise control of cutting positioning accuracy; the steel used in shipbuilding is mostly thick plates, which may shift due to vibration during transmission, affecting subsequent cutting quality; the alignment component can automatically position the material before cutting, quickly calibrating it to the preset cutting benchmark and simultaneously fixing it to eliminate positioning deviations; and it can also improve the stability of the cutting process. The fixing and limiting function of the alignment mechanism forms a strong constraint, effectively resisting the impact, vibration, and other thermal stresses generated during the intermittent reciprocating cutting of the 205 cutting machine, preventing material warping and displacement, reducing defects such as slanted cuts, burrs, and bevel deformation, and ensuring uniform and stable cutting quality.

[0029] Meanwhile, the alignment components are adapted for automated continuous operation. The automatic positioning and fixing of the alignment components do not require manual intervention and can be precisely synchronized with the intermittent movement of the cutting machine 205. There is no need for manual calibration and clamping, which greatly improves the work efficiency. The material after being fixed and limited can avoid collision with the cutting machine 205 due to displacement during cutting, reducing wear on core components such as the cutting tool and guide rail. At the same time, automatic operation reduces personnel's close contact with moving materials and high-temperature cutting areas, reducing safety hazards such as mechanical injury and burns, which is in line with the workshop's safety production standards. In addition, the alignment components can adaptively adjust the positioning accuracy and clamping force according to the different widths and thicknesses of the steel used in ships. It is compatible with various specifications of materials such as steel plates and profiles, without the need to change special tooling, reducing production changeover costs and adapting to the needs of modern ship intelligent manufacturing for multi-variety and batch cutting.

[0030] During use, when the drive gear 102 rotates, the transmission gear 103 below rotates synchronously. During the rotation of the transmission gear 103, it moves through the corresponding rotating connecting rod 105, and at the same time drives the sliding block 107 below to reciprocate in the vertical direction. When the sliding block 107 moves upward, the vent plate 302 drives the air box 401 at its upper end to move upward synchronously. At this time, a relative displacement occurs between the air box 401 and the pressure plate 404, so that the pressure plate 404 squeezes the piston plate 402 through the piston rod 403, so that the piston plate 402 squeezes the gas inside the air box 401 into the expansion rubber 304, so that the expansion rubber 304 expands and squeezes the fixing block 305 in the horizontal direction, so that the fixing block 305 moves and squeezes the material in the middle, limiting and fixing the material to facilitate subsequent cutting. After cutting, the sliding block 107 moves downward, the gas inside the expansion rubber 304 returns to the air box 401, and at the same time, the fixing block 305 releases the limiting and fixing of the material.

[0031] The remaining structure is the same as that in Example 1.

[0032] Example 3, referring to Figures 1-3 This is the third embodiment of the present invention, which differs from the second embodiment in that the cutting unit further includes a feeding component. The feeding component includes multiple support rods 501 disposed on the upper end of the support plate 1, and two conveyor belts 502 respectively disposed on the upper ends of the multiple support rods 501. A gap is left between the two conveyor belts 502, and the cutting machine 205 and the support plate 303 are both located at the gap. A conveyor roller is disposed inside the conveyor belt 502, and one end of the conveyor roller is fixedly connected to a servo motor. Each time the conveyor roller rotates a set angle, the servo motor stops intermittently once.

[0033] Specifically, the conveyor belt 502 is used for continuous material feeding. After the material is placed on the upper end of the conveyor belt 502, the entire process of feeding, positioning and cutting can be carried out continuously. The material can be automatically positioned and limited before cutting. Then, the material is cut into multiple segments. The parameters of the servo motor are set so that the conveyor belt 502 can accurately control the position of the material on the conveyor belt 502, thereby ensuring that the cutting machine 205 can cut the material to the required length.

[0034] The intermittent conveying of the conveyor belt 502, in conjunction with the automatic positioning and fixing of the alignment components and the intermittent reciprocating motion of the cutting machine 205, enables precise coordination of feeding, positioning, and cutting. The benefits include: precise matching of length-specific cutting requirements; the intermittently moving conveyor belt 502 accurately conveys the material to be cut to the designated position according to the preset cutting length and then smoothly stops, avoiding overfeeding or underfeeding caused by continuous feeding; providing a stable benchmark for subsequent alignment component positioning and cutting by the cutting machine 205; ensuring uniform cutting dimensions for each section of ship components; and preventing the conveyor belt 502 from running continuously at high speed for extended periods, reducing motor wear, lowering energy consumption and maintenance frequency, and extending equipment lifespan, thus meeting the needs of large-scale, low-cost production in shipbuilding workshops.

[0035] The remaining structure is the same as that in Example 2.

[0036] Based on embodiments 1-3, the working principle of the present invention is as follows: The conveyor belt 502 drives the material at the upper end to move slowly and uniformly. At the same time, the equipment starts, and the drive motor 203 drives the rotating shaft 101 to rotate through the drive end. The rotating shaft 101 drives the drive gear 102 on its outer wall to rotate synchronously. During the rotation, the drive gear 102, through the mutual cooperation between the drive shaft 201 on the outer wall and the drive groove, generates extrusion force in different directions on the rotating connecting rod 105, causing the rotating connecting rod 105 to move with the extrusion force. During the movement, the rotating connecting rod 105 exerts pressure on the sliding block 107 inside the movable seat 106. Because the horizontal direction of the sliding block 107 is limited by the movable seat 106, when the sliding block 107 is subjected to the pulling force of the rotating connecting rod 105, it will only reciprocate in the vertical direction inside the movable seat 106. After the conveyor belt 502 transports the material to the designated position, the sliding block 107 moves downward and cuts the material. When it moves to the lowest point, the cutting machine 205 at its lower end completes the cutting of the material. When the sliding block 107 moves upward, it will not come into contact with the material. At this time, the material moves a certain distance horizontally to ensure that the material itself is in the designated size for the next cut.

[0037] As the drive gear 102 rotates, the transmission gear 103 below rotates synchronously. During the rotation of the transmission gear 103, it moves through the corresponding rotating connecting rod 105, which in turn drives the sliding block 107 below to reciprocate in the vertical direction. When the sliding block 107 moves upward, the vent plate 302 drives the air box 401 at its upper end to move upward synchronously. At this time, a relative displacement occurs between the air box 401 and the pressure plate 404, causing the pressure plate 404 to squeeze the piston plate 402 through the piston rod 403. This causes the piston plate 402 to squeeze the gas inside the air box 401 into the expansion rubber 304, causing the expansion rubber 304 to expand and squeeze the fixing block 305 in the horizontal direction. This causes the fixing block 305 to move and squeeze the material in the middle, limiting and fixing the material for subsequent cutting. After cutting, the sliding block 107 moves downward, and the gas inside the expansion rubber 304 returns to the air box 401. At the same time, the fixing block 305 releases its limiting and fixing of the material. The conveyor belt 502 restarts to continue conveying the cut material to the next stage, while simultaneously driving the material to be cut to continue moving slowly to the designated position, and repeating the above operation.

[0038] 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 cutting device for shipbuilding, comprising a support plate (1) and a mounting plate (2) disposed on the upper end of the support plate (1), characterized in that, It also includes a cutting unit disposed on the mounting plate (2), the cutting unit including an intermittent component and an alignment component disposed on the mounting plate (2); The intermittent component includes two rotating shafts (101) disposed on the mounting plate (2), a drive gear (102) and a transmission gear (103) respectively disposed on the outer walls of the upper and lower rotating shafts (101), a mounting shaft (104) disposed on the side wall of the mounting plate (2), a rotating connecting rod (105) disposed on the upper end of the mounting shaft (104), two movable seats (106) disposed on the side wall of the mounting plate (2), sliding blocks (107) respectively disposed inside the two movable seats (106), and a connecting shaft (108) disposed on the side wall of the sliding block (107). The two connecting shafts (108) are rotatably connected to the corresponding rotating connecting rods (105) respectively, and the drive gear (102) and the transmission gear (103) mesh with each other. The intermittent component also includes a drive shaft (201) disposed on the outer wall of the drive gear (102) and the transmission gear (103), a drive groove opened on the outer wall of the two rotating connecting rods (105), the two drive shafts (201) being located inside the corresponding drive grooves, a support plate (202) disposed on the side wall of the mounting plate (2), a drive motor (203) disposed on the upper end of the support plate (202), the drive end of the drive motor (203) being fixedly connected to one end of the rotating shaft (101), and a cutting component being installed on the sliding block (107) located above.

2. The cutting device for shipbuilding according to claim 1, characterized in that, The cutting assembly includes an extension plate (204) disposed at the lower end of the upper sliding block (107), and a cutting machine (205) disposed at the lower end of the extension plate (204).

3. A cutting device for shipbuilding according to claim 2, characterized in that, The alignment component includes a vertical plate (301) disposed on the upper end of the sliding block (107) located below, a vent plate (302) disposed on the upper end of the vertical plate (301), and a plurality of support plates (303) disposed on the upper end of the vent plate (302), with a fixing component installed between the plurality of support plates (303) and the vent plate (302).

4. A cutting device for shipbuilding according to claim 3, characterized in that, The fixing component includes mounting grooves respectively opened on the side walls of multiple support plates (303), an expansion rubber (304) set in the mounting groove, and a fixing block (305) slidably set in the mounting groove. The side wall of the expansion rubber (304) is fixedly connected to the side wall of the fixing block (305). An air pumping element is installed between the vent plate (302) and the mounting plate (2).

5. A cutting device for shipbuilding according to claim 4, characterized in that, The air-inflating element includes an air-inflating box (401) disposed on the upper end of the air-venting plate (302), a piston plate (402) slidably disposed on the inner wall of the air-inflating box (401), a piston rod (403) disposed on the upper end of the piston plate (402), and a pressure plate (404) disposed on the side wall of the mounting plate (2). The lower end of the pressure plate (404) is fixedly connected to the upper end of the piston rod (403).

6. A cutting device for shipbuilding according to claim 5, characterized in that, A connecting pipe (405) is installed between the lower end of the air box (401) and the vent plate (302), and the multiple expansion rubbers (304) are interconnected with the interior of the vent plate (302).

7. A cutting device for shipbuilding according to claim 6, characterized in that, The cutting unit also includes a feeding component, which includes multiple support rods (501) disposed on the upper end of the support plate (1) and two conveyor belts (502) disposed on the upper end of the multiple support rods (501), with a gap between the two conveyor belts (502), and the cutting machine (205) and the support plate (303) are both located at the gap.

8. A cutting device for shipbuilding according to claim 7, characterized in that, The conveyor belt (502) is equipped with a conveyor roller. One end of the conveyor roller is fixedly connected to a servo motor. The servo motor stops intermittently once after the conveyor roller rotates a set angle.

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