A method of profiling a channelled bulkhead

Abstract

The present application relates to shipbuilding technical field, disclose a kind of profiling method of slot bulkhead, the center line corresponding to each slot of bulkhead plate is drawn;Center line is drawn on the protrusion of upper die, and the upper die is installed on the upper workbench of hydraulic machine, the center line is drawn on the recess of lower die, and the lower die is installed on the lower workbench of hydraulic machine, and bulkhead plate is horizontally placed on lower die;The first slot of bulkhead plate is respectively opposite to the center line of upper die and the center line of lower die by driving device horizontal movement bulkhead plate, then hydraulic machine is profiled to form slot;One station position of bulkhead plate is horizontally moved by driving device, so that the next slot of bulkhead plate is respectively opposite to the center line of upper die and the center line of lower die, then hydraulic machine is profiled to form slot.The present application adopts single-slot profiling, effectively reduces cost, and operation is simple, operability is high, and it is flexible.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding technology, and in particular to a molding method for a trough-shaped bulkhead. Background Technology

[0002] Currently, in order to control the structural weight of ships, various ship types are replacing the original plate and frame bulkheads with trough-shaped bulkheads in the superstructure or living areas. However, the manufacturing of trough-shaped bulkheads usually involves pressing flat plates into the required trough shape. However, depending on the characteristics of different ship types and the location where they are used, the depth of the trough-shaped bulkheads varies. This results in high manufacturing costs and inconvenience in outsourcing the manufacturing process. Purchasing different molds also incurs considerable costs, and these molds are often not used after one use, leading to resource waste. Summary of the Invention

[0003] The purpose of this invention is to provide a molding method for a trough-shaped bulkhead, which adopts a single-trough molding method, effectively reducing costs, and is simple to operate, highly operable, and flexible.

[0004] To achieve the above objectives, the present invention provides a method for forming a trough-shaped bulkhead. The trough-shaped bulkhead is composed of multiple grooves. A forming device is used to form the bulkhead sheet material into a trough-shaped bulkhead. The forming device includes a hydraulic press, an upper mold, a lower mold, and a drive device for moving the bulkhead sheet material. The upper mold is detachably mounted on the upper worktable of the hydraulic press, and the lower mold is detachably mounted on the lower worktable of the hydraulic press. The upper mold has a protrusion that matches the top surface shape of one of the grooves, and the lower mold has a groove that matches the bottom surface shape of one of the grooves.

[0005] The forming method for the trough-shaped bulkhead includes the following steps:

[0006] Step 1: Based on the unfolded drawing of the trough-shaped bulkhead model, draw the center line corresponding to each trough on the bulkhead plate.

[0007] Step two: Draw the center line on the upper mold and install the upper mold on the upper worktable of the hydraulic press; draw the center line on the lower mold and install the lower mold on the lower worktable of the hydraulic press; wherein, the order of steps one and two is not important.

[0008] Step 3: Place the bulkhead plate from Step 1 horizontally on the lower mold;

[0009] Step 4: The bulkhead plate is horizontally moved by the drive device so that the center line of the first groove of the bulkhead plate is aligned with the center line of the upper mold and the center line of the lower mold respectively. Then the hydraulic press is used to form the groove.

[0010] Step 5: The drive device is used to horizontally move the bulkhead plate to one workstation position so that the center line of the next groove of the bulkhead plate is aligned with the center line of the upper mold and the center line of the lower mold respectively. Then the hydraulic press is used to press and form the groove. The operation is repeated until all the grooves of the bulkhead plate are pressed and formed into a grooved bulkhead.

[0011] As a preferred embodiment of the present invention, the groove includes a bottom plate, side walls and a top plate, two side walls are provided and respectively connected to both sides of the bottom plate, two top plates are provided and respectively connected to the top of one of the side walls, and the bottom plate and the top plate are parallel.

[0012] In a preferred embodiment of the present invention, the sum of the lengths of two adjacent top plates is equal to the length of the bottom plate.

[0013] As a preferred embodiment of the present invention, in step one, the starting line and the ending line of the two sides of the corresponding groove corner are drawn on the bulkhead plate.

[0014] As a preferred embodiment of the present invention, the driving device includes a crane and a wire rope connected to the crane, and in step four, the wire rope is connected to one side of the bulkhead plate.

[0015] As a preferred embodiment of the present invention, the molding method of the trough-shaped bulkhead further includes step six, comparing and checking the molded trough-shaped bulkhead with the theoretical trough-shaped bulkhead model to ensure that the length of the molded trough-shaped bulkhead is the same as the length of the theoretical trough-shaped bulkhead model.

[0016] As a preferred embodiment of the present invention, in step two, the center line on the protrusion of the upper mold is located at the front end and the rear end of the protrusion of the upper mold, and the center line on the groove of the lower mold is located at the front end and the rear end of the groove of the lower mold.

[0017] As a preferred embodiment of the present invention, the center line of each groove on the bulkhead plate is a powder spraying line.

[0018] Compared with the prior art, the forming method for a trough-shaped bulkhead according to an embodiment of the present invention has the following advantages:

[0019] This invention uses a single-groove pressing method to press bulkhead plates, effectively reducing mold costs. Furthermore, by aligning the center lines of the grooves on the bulkhead plates with the center lines of the upper and lower molds respectively, high pressing accuracy is ensured, and the pressing operation is simple. The upper and lower molds on the hydraulic press can be changed according to the groove structure of different bulkheads to quickly press and form the required different groove structures, making it highly operable and flexible. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0021] Figure 1 This is a schematic diagram of the structure of the bulkhead plate in step one of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the grooved bulkhead after molding provided by the present invention;

[0023] Figure 3 This is a schematic diagram of the upper and lower molds provided by the present invention;

[0024] In the figure, 1 is a trough-shaped bulkhead; 2 is a trough strip; 21 is a bottom plate; 22 is a side wall; 23 is a top plate; 3 is a bulkhead plate; 31 is the center line of the trough strip; 32 is the starting line of the bend; 33 is the ending line of the bend; 4 is an upper mold; 41 is a protrusion; 42 is the center line of the upper mold; 5 is a lower mold; 51 is a groove; 52 is the center line of the lower mold. Detailed Implementation

[0025] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0026] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0027] like Figures 1 to 3 As shown, a preferred embodiment of the present invention provides a method for forming a trough-shaped bulkhead. The trough-shaped bulkhead 1 is composed of multiple grooves 2. A forming device is used to form the trough-shaped bulkhead 1 by forming the bulkhead sheet 3. The forming device includes a hydraulic press, an upper mold 4, a lower mold 5, and a drive device for moving the bulkhead sheet 3. The hydraulic press is preferably an oil press. The upper mold 4 is detachably mounted on the upper worktable of the hydraulic press, and the lower mold 5 is detachably mounted on the lower worktable of the hydraulic press. The upper mold 4 is provided with a protrusion 41 that matches the top surface shape of one of the grooves 2, and the lower mold 5 is provided with a groove 51 that matches the bottom surface shape of one of the grooves 2.

[0028] The forming method for the trough-shaped bulkhead includes the following steps:

[0029] Step 1: According to the unfolded drawing of the trough-shaped bulkhead 1 model, draw the center line corresponding to each trough 2 on the bulkhead plate 3. Specifically, the center line 31 of each trough on the bulkhead plate 3 is the powder spraying line.

[0030] Step 2: Draw the center line on the upper mold 4 and install the upper mold 4 on the upper worktable of the hydraulic press; draw the center line on the lower mold 5 and install the lower mold 5 on the lower worktable of the hydraulic press; wherein, the order of Step 1 and Step 2 is not important.

[0031] Step 3: Place the bulkhead plate 3 from Step 1 horizontally on the lower mold 5;

[0032] Step 4: The bulkhead plate 3 is horizontally moved by the drive device so that the center line of the first groove 2 of the bulkhead plate 3 is aligned with the center line 42 of the upper mold and the center line 52 of the lower mold respectively. Then the hydraulic press is used to form the groove 2.

[0033] Step 5: The drive device horizontally moves the bulkhead plate 3 to one workstation position so that the center line of the next groove 2 of the bulkhead plate 3 is aligned with the center line 42 of the upper mold and the center line 52 of the lower mold, respectively. Then, the hydraulic press performs pressing to form the groove 2. This operation is repeated until all the grooves 2 of the bulkhead plate 3 are pressed to form the grooved bulkhead 1. When all the grooves 2 of the grooved bulkhead 1 are not of the same specification, the operator needs to change the upper mold 4 and lower mold 5 of the hydraulic press when pressing to the corresponding different groove 2 structural positions. This allows for pressing of the grooved bulkhead 1 according to requirements, providing high operational flexibility.

[0034] This invention uses a single-groove pressing method to press the bulkhead plate 3, which effectively reduces mold costs. Moreover, by aligning the center line 31 of the groove on the bulkhead plate 3 with the center line 42 of the upper mold and the center line 52 of the lower mold, high pressing accuracy is ensured and the pressing operation is simple. The upper mold 4 and the lower mold 5 on the hydraulic press can be changed according to the groove 2 structure of different bulkhead 1 to quickly press and form the required different groove 2 structures, which is highly operable and flexible.

[0035] For example, the groove 2 includes a bottom plate 21, side walls 22 and a top plate 23. There are two side walls 22 and they are respectively connected to both sides of the bottom plate 21. There are two top plates 23 and they are respectively connected to the top of one side wall 22. Specifically, the length of two adjacent top plates 23 is equal to the length of the bottom plate 21. The bottom plate 21 and the top plate 23 are parallel, which ensures that a grooved bulkhead 1 with alternating positive and negative grooved structures can be pressed out.

[0036] For example, in step one, the starting line 32 and the ending line of the two sides of the corresponding corner of each groove 2 are drawn on the bulkhead plate 3. The starting line 32 and the ending line 33 of the corner are preferably powder spraying lines. The starting line 32 and the ending line 33 of the corner can be used to easily check the position accuracy of the groove 2 after forming.

[0037] For example, the driving device includes a crane and a steel wire rope connected to the crane. In step four, the steel wire rope is connected to one side of the bulkhead plate 3. The crane drives the steel wire rope to pull the bulkhead plate 3 horizontally, so that the center line corresponding to the first groove 2 at any end of the bulkhead plate 3 is aligned with the center line 42 of the upper mold and the center line 52 of the lower mold. Then, the hydraulic press is started, the upper mold 4 descends and closes with the lower mold 5 to perform a forming process on the bulkhead plate 3. Preferably, the forming device is also provided with a support platform for supporting the bulkhead plate 3, thus ensuring the stability of the bulkhead plate 3 during the forming process.

[0038] For example, the molding method of the trough-shaped bulkhead further includes step six, comparing and checking the molded trough-shaped bulkhead 1 with the theoretical trough-shaped bulkhead 1 model to ensure that the total length of the molded trough-shaped bulkhead 1 is the same as the total length of the theoretical trough-shaped bulkhead 1 model, and marking the distance between the left and right ends of each groove 2 and its center line 31, so as to facilitate subsequent checks on the accuracy of molding.

[0039] For example, in step two, the center line on the protrusion of the upper mold 4 is located at the front end and rear end of the protrusion of the upper mold 4 and the front end face and rear end face of the protrusion of the upper mold 4, and the center line on the groove of the lower mold 5 is located at the front end and rear end of the groove of the lower mold 5 and the front end face and rear end face of the groove of the lower mold 5. This allows the operator to ensure that the positions of the upper mold 4, the lower mold 5 and the bulkhead plate 3 are accurately corresponding during the pressing process, thus ensuring the accuracy of the pressing.

[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A method for forming a trough-shaped bulkhead, wherein the trough-shaped bulkhead is composed of multiple grooved strips, characterized in that, A forming device is used to form a grooved bulkhead using bulkhead plates. The forming device includes a hydraulic press, an upper die, a lower die, and a drive mechanism for moving the bulkhead plates. The upper die is detachably mounted on the upper worktable of the hydraulic press, and the lower die is detachably mounted on the lower worktable of the hydraulic press. The upper die has a protrusion that mates with the top surface of one of the grooves, and the lower die has a groove that mates with the bottom surface of one of the grooves. The forming method for the trough-shaped bulkhead includes the following steps: Step 1: Based on the unfolded drawing of the trough-shaped bulkhead model, draw the center line corresponding to each trough on the bulkhead plate; draw the starting line and ending line of the two side bends of each trough on the bulkhead plate. Step two: Draw a center line on the upper mold and install the upper mold on the upper worktable of the hydraulic press; draw a center line on the lower mold and install the lower mold on the lower worktable of the hydraulic press; the center line on the protrusion of the upper mold is located at the front end and rear end of the protrusion, and the center line on the groove of the lower mold is located at the front end and rear end of the groove; wherein, the order of steps one and two is not important. Step 3: Place the bulkhead plate from Step 1 horizontally on the lower mold; Step 4: The bulkhead plate is horizontally moved by the drive device so that the center line of the first groove of the bulkhead plate is aligned with the center line of the upper mold and the center line of the lower mold respectively. Then the hydraulic press is used to form the groove. Step 5: The drive device is used to horizontally move the bulkhead plate to one workstation position so that the center line of the next groove of the bulkhead plate is aligned with the center line of the upper mold and the center line of the lower mold respectively. Then the hydraulic press is used to press and form the groove. The operation is repeated until all the grooves of the bulkhead plate are pressed and formed to form a grooved bulkhead. Step six: Compare and check the completed molded trough-shaped bulkhead with the theoretical trough-shaped bulkhead model to ensure that the length of the completed molded trough-shaped bulkhead is the same as the length of the theoretical trough-shaped bulkhead model.

2. The molding method for the trough-shaped bulkhead as described in claim 1, characterized in that, The groove includes a bottom plate, side walls, and a top plate. There are two side walls, which are respectively connected to both sides of the bottom plate. There are two top plates, which are respectively connected to the top of one of the side walls. The bottom plate is parallel to the top plate.

3. The molding method for the trough-shaped bulkhead as described in claim 2, characterized in that, The sum of the lengths of two adjacent top plates is equal to the length of the bottom plate.

4. The molding method for the trough-shaped bulkhead as described in claim 1, characterized in that, The drive device includes a crane and a wire rope connected to the crane. In step four, the wire rope is connected to one side of the bulkhead plate.

5. The molding method for the trough-shaped bulkhead as described in claim 1, characterized in that, The center line of each groove on the bulkhead plate is the powder coating line.

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