Hydraulic forming device and forming method for metal plate body

Abstract

The invention relates to the technical field of hydraulic forming devices, and particularly discloses a hydraulic forming device for a metal plate body. A workbench is arranged on the machine frame, a stamping assembly is arranged on the machine frame, and a lower die plate is arranged on the workbench. The dovetail module is arranged at the top of the lower template in a sliding manner; the first modules are arranged at the top of the lower die plate, the two first modules are arranged on the two sides of the dovetail module respectively, the second modules are located on the two sides of the dovetail module respectively, ejector rods are arranged in the second modules in a sliding mode, the ejector rods are used for ejecting and pushing the two first modules to move reversely, and ejecting and stretching assemblies are arranged in the second modules. The ejector rod pushes the first module to move relatively and drives the jacking and extending assembly to upwards push the formed part, so that the jacking and extending assembly is used for jacking and discharging the formed part; according to the hydraulic forming device and method for the metal plate body, friction between the side wall of a formed part and one side wall of the module is avoided, and the product quality of the formed part obtained after hydraulic forming is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of hydroforming devices, and particularly relates to a hydroforming device and a forming method for metal plates. Background Art

[0002] A hydroforming device for metal plates is a device that presses a metal plate into a mold to form it. It consists of a hydraulic system, a mold, a pressure chamber, and a control system, and can efficiently and precisely manufacture metal parts with complex shapes. This device is widely used in fields such as automotive, aerospace, and home appliance manufacturing, and has the advantages of high precision, high material utilization rate, and good surface quality, and is an important tool in modern manufacturing.

[0003] In a Chinese patent with the publication number CN118699210A, a hydroforming device and a forming method are disclosed, including: a pulling rope is arranged at the input end of the horizontal pushing mechanism, a pushing plate is arranged on the horizontal pushing mechanism, the pushing plate is located at the placing end of the inclined frame, the other end of the pulling rope is arranged on the side edge of the corresponding punch. After placing the stainless steel plate to be processed on the inclined frame, the setting can be started, and the punch can be lifted above the machine tool. During the lifting process of the punch, the connected pulling rope will be pulled, and the pulling rope will change its position as the punch rises. The pulling rope will drive the horizontal seat to move horizontally along the long groove. When the horizontal seat moves horizontally, it will drive the pushing plate to push the placed stainless steel plate. After the stainless steel plate is pushed onto the lap plate of the female mold, the next stainless steel plate will fall onto the pushing plate again. When the punch moves downward, the horizontal seat will be pulled back by the third spring, and the pushing plate on the horizontal seat will move to one end of the stainless steel plate.

[0004] What the above patent document provides is that the material taking and blanking are completed through the horizontal pushing mechanism, which reduces the labor intensity of personnel during the processing process and improves work efficiency. However, in traditional hydroforming devices, after hydroforming, due to large hydraulic pressure or complex shapes, it is easy to cause the formed part to be firmly pressed against the lower mold. When pushing and taking the material with a mechanical ejector pin, it is easy to cause friction between the extruded formed part and the lower mold, thereby scratching the product after hydroforming, thus affecting the qualification rate of the product. Especially for high-precision formed parts of automobiles, the formed parts will be directly affected in use after being rubbed, which is likely to cause an increase in economic costs. Summary of the Invention

[0005] The present invention provides a hydroforming device and a forming method for metal plates, aiming to solve the technical problem that during the pushing and taking of materials in related technologies, it is easy to cause friction between the extruded formed part and the lower mold, thereby scratching the product after hydroforming, thus affecting the qualification rate of the product.

[0006] A hydroforming device for metal plates according to the present invention includes: Frame; a workbench is provided on the frame, and a stamping assembly is provided on the frame. The stamping assembly is used for stamping and forming a sheet, and a lower template is provided on the workbench; Dovetail module, slidably arranged on the top of the lower template. Dovetail grooves are provided on two opposite side surfaces of the dovetail module, and the dovetail module can slide along the width direction of the lower template; Module 1 is arranged on the top of the lower template. There are two Module 1s, and the two Module 1s are respectively arranged on both sides of the dovetail module. The opposite side walls of the two Module 1s are respectively abutted and slidably matched with the two dovetail grooves. Two Module 2s are provided on the top of the lower template, and the Module 2s are respectively located on both sides of the dovetail module; A push rod is slidably arranged inside each of the Module 2s. The push rod is used to push the two Module 1s to move in opposite directions. A top extension assembly is arranged inside the Module 2, and the top extension assembly is in transmission connection with the push rod. When the push rod pushes the Module 1s to move relatively, it also drives the top extension assembly to push the formed part upward, so that the top extension assembly is used to push and discharge the formed part.

[0007] Preferably, a first slide bar is provided on the top of the lower template, and the first slide bar is arranged along the width direction of the lower template. A first chute is provided at the bottom of the dovetail module, and the first slide bar is slidably matched with the first chute. A support plate is provided on the top of the workbench, and a first telescopic rod is provided on the outer wall of one side of the support plate, and the output end of the first telescopic rod is connected to the side wall of the dovetail module.

[0008] Preferably, a housing is provided on the frame. Second telescopic rods are provided on the opposite side walls of the housing. The second telescopic rods can push the Module 2s to move in opposite directions. A connecting component is provided at the end of the second telescopic rod. The connecting component is used to connect or disconnect from the push rod inside the Module 2, and one end of the push rod is fixedly connected to the side wall of the Module 1.

[0009] Preferably, the connecting component includes: a motor, a connecting rod, a clamping block and a clamping groove. The second telescopic rod is composed of a piston cylinder and a top extension rod. The motor is arranged inside the top extension rod, and the motor is close to the top extension end of the top extension rod. A rotating shaft is provided at the output end of the motor. The connecting rod is arranged at the end of the top extension rod, and the connecting rod is in transmission connection with the rotating shaft. The clamping blocks are symmetrically arranged on the outer peripheral surface of the connecting rod. A second groove is provided at one side end of the push rod, and the clamping grooves are symmetrically provided along the inner ring surface of the second groove.

[0010] Preferably, the top extension assembly includes: a top block, a guide rod and a transmission rod. The transmission rod is arranged on the outer peripheral surface of the push rod, and the transmission rod is perpendicular to the push rod. A first groove and a guide groove are provided on the top surface of the Module 2. The top block is arranged inside the first groove, and the top of the top block is flush with the top surface of the Module 2. The guide rods are arranged on the outer walls of both sides of the Module 2, and the guide rods are slidably arranged inside the guide grooves.

[0011] Preferably, an elastic member is provided at the bottom end of the guide rod, and the elastic member can reset the guide rod downward. A moving groove is formed inside the second module, and the transmission rod is located inside the moving groove. A third lower groove is formed inside the top block, and a triangular block is provided inside the third lower groove. The top surface of the transmission rod abuts against the inclined surface of the triangular block.

[0012] Preferably, an oil cylinder is provided at the top of the frame, and the stamping assembly is arranged at the output end of the oil cylinder. The oil cylinder can drive the stamping assembly to move up and down. The stamping assembly includes: an upper clamp, an upper die, a first extrusion member, and a second extrusion member. The upper clamp is arranged at the output end of the oil cylinder, and the upper die is arranged at the bottom of the upper clamp. The first extrusion member and the second extrusion member are a group, and two groups of the first extrusion member and the second extrusion member are respectively arranged on the left and right sides of the upper clamp.

[0013] Preferably, an elastic member is arranged inside the first extrusion member, and the second extrusion member is elastically arranged inside the first extrusion member. The first extrusion member and the second extrusion member are used for extruding and positioning the plate. An elastic column is arranged at the top of the second module, and the elastic column is used for buffering the stamping assembly.

[0014] Preferably, a controller is arranged on the frame, and the controller is used to control the hydraulic forming of the plate. A support plate is arranged on the outer wall of the frame, and a cylinder is vertically arranged on the support plate. The output end of the cylinder is provided with a vertical rod, and an explosion-proof door is arranged at the bottom end of the vertical rod. The explosion-proof door is used to shield the processing and forming area. A guide rail is vertically arranged on the frame, and the explosion-proof door is slidably matched with the guide rail.

[0015] A hydraulic forming method for a metal plate body includes the following steps: S1. First, place the plate above the lower forming die, and then the oil cylinder drives the stamping assembly to move downward so that the stamping assembly stamps and forms the plate. S2. The dovetail module moves along the width direction of the lower template so that there is a certain space between the two first modules. Then the ejector rod pushes the two first modules to move relatively, so that the two first modules are separated from the side wall of the formed part, ensuring the product quality of the formed part after hydraulic forming. S3. In order to avoid friction between the tops of the two first modules and the formed part when they move relatively, the ejector rod pushes the two first modules to move relatively and drives the top extension assembly to push the formed part upward, so that a gap is formed between the formed part and the first module, and at the same time, it is convenient for taking the material. S4. When performing the hydraulic forming of the plate, the cylinder drives the explosion-proof door to shield the processing area, improving the safety of the equipment during use.

[0016] The beneficial effects of the present invention are: 1. Avoid frictional damage. By driving Module 1 of the ejector rod to move in the reverse direction, the side wall of the formed part is separated from the mold. Combining with the ejecting component to synchronously lift the formed part, completely eliminating the friction between the side wall and the top during demolding, ensuring no scratches on the surface of high-precision parts, and significantly improving the product qualification rate.

[0017] 2. Linkage and efficient demolding. The single action of the ejector rod simultaneously triggers the demolding of Module 1 and the lifting of the ejecting component, realizing "one action with two functions", simplifying the operation process, improving the demolding efficiency, and reducing the production cycle time.

[0018] 3. Rotational locking design of the clamping block and the groove. By controlling the motor, the connection between the ejector rod and the telescopic rod is made non-automatic, enhancing the reliability of the equipment, reducing the need for manual intervention, and being applicable to continuous production lines.

[0019] 4. Dynamic buffer protection. The elastic column at the top of Module 2 absorbs the stamping impact force, avoiding overpressure adhesion between the mold and the plate, reducing equipment vibration at the same time, and prolonging the mold life, especially suitable for forming high-strength materials. Description of the Drawings

[0020] Figure 1 is the overall structural schematic diagram of the present invention.

[0021] Figure 2 is the structural schematic diagram of the workbench of the present invention.

[0022] Figure 3 is the structural schematic diagram of the lower template of the present invention.

[0023] Figure 4 is the structural schematic diagram of the dovetail module of the present invention.

[0024] Figure 5 is the structural schematic diagram of the top block of the present invention.

[0025] Figure 6 is the structural schematic diagram of the connecting rod of the present invention.

[0026] Figure 7 is the structural schematic diagram of the triangular block of the present invention.

[0027] Figure 8 is the structural schematic diagram of the second extrusion part of the present invention.

[0028] Reference Signs: 10. Frame; 11. Controller; 12. Explosion-proof door; 13. Support plate; 14. Cylinder; 15. Vertical rod; 16. Guide rail; 20. Cylinder; 21. Upper fixture; 22. Workbench; 30. Lower template; 31. Module one; 33. Dovetail module; 34. Module two; 35. Support plate; 36. First telescopic rod; 37. First slide bar; 38. First slide slot; 39. Elastic column; 40. Top block; 41. Guide rod; 42. First groove; 43. Guide groove; 44. Moving groove; 46. Top rod; 47. Transmission rod; 48. Third groove; 49. Triangle block; 50. Second telescopic rod; 51. Motor; 52. Connecting rod; 53. Block; 54. Second groove; 55. Slot; 60. Upper mold; 61. Extrusion piece one; 62. Extrusion piece two. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0030] like Figures 1 to 8 As shown, a hydraulic forming device for a metal plate body of the present invention comprises a frame 10, a workbench 22, and a stamping assembly, wherein the workbench 22 is arranged inside the frame 10, and the stamping assembly is arranged on the top of the frame 10, and further comprises: a lower template 30, a dovetail module 33, two modules 1 31, a module 2 34, a push rod 46 and a push extension assembly, wherein the lower template 30 is arranged on the top of the workbench 22, and the lower template 30 is in the shape of a rectangular plate, the dovetail module 33 is slidably arranged on the top of the lower template 30, and the dovetail module 33 is provided on two opposite sides thereof. There is a dovetail groove, and the two modules 1 31 are respectively arranged on the left and right sides of the dovetail module 33, and the opposite side walls of the two modules 1 31 are respectively stopped and slidably matched with the two dovetail grooves. Module 2 34 is symmetrically arranged on the top of the lower template 30 along the length direction, and module 2 34 is respectively located on both sides of module 1 31. The push rod 46 is slidably arranged inside the module 2 34, and the push rod 46 is used to push the module 1 31 to move in the opposite direction, and the extension component is arranged inside the module 2 34, and the extension component is used to push the molded part to be discharged, and the push rod 46 is transmission connected with the extension component.

[0031] When stamping a sheet metal, first place the sheet metal on the lower die. The stamping assembly drives the upper die to move downward. After the stamping of the sheet metal is completed, the stamping assembly will drive the upper die to move upward. Subsequently, the dovetail module 33 moves along the width direction of the lower template 30, so that there is a certain space between the two module ones 31. Subsequently, the ejector rod 46 pushes the two module ones 31 to move relatively, so that the two module ones 31 are separated from the side wall of the formed part after being extruded and formed. When taking the formed part upward, it avoids the friction between the side wall of the formed part and the side wall of the module one 31, ensuring the product quality of the formed part after hydroforming. At the same time, when the ejector rod 46 pushes the two module ones 31 to move relatively, the ejector rod 46 drives the ejecting assembly to push the formed part upward, so that the formed part is separated from the module one 31, thus avoiding the friction between the top of the module one 31 and the formed part, ensuring the qualified rate of the product and improving the accuracy of the formed part.

[0032] To further illustrate how to avoid friction that is easily caused when taking the formed part and how to improve the product quality of the formed part, the following will be described in detail.

[0033] As Figures 1 to 5 shown, an installation groove is provided at the top of the workbench 22 for installing dies of different shapes and sizes. A first slide bar 37 is provided on the top of the lower template 30, and the first slide bar 37 is arranged along the width direction of the lower template 30. A first chute 38 is provided at the bottom of the dovetail module 33, and the first slide bar 37 is slidably engaged with the first chute 38. A support plate 35 is provided on the top of the workbench 22. A first telescopic rod 36 is provided on the outer wall of one side of the support plate 35, and the output end of the first telescopic rod 36 is connected to the side wall of the dovetail module 33, so that the first telescopic rod 36 can push the dovetail module 33 to slide. The module two 34 is symmetrically arranged along the length direction on the top of the lower template 30, and the module two 34 is symmetric with respect to the dovetail module 33, and the end face of each module two 34 is L-shaped.

[0034] As Figures 1 to 5 shown, a housing is provided on the frame 10. Second telescopic rods 50 are provided on the opposite side walls of the housing. The second telescopic rods 50 can push the module two 34 to move in the opposite direction. It should be noted that a connection assembly is provided at the end of the second telescopic rod 50, and the connection assembly is used to connect or disconnect from the ejector rod 46 inside the module two 34, and one end of the ejector rod 46 is fixedly connected to the side wall of the module one 31, so as to realize the second telescopic rod 50 pushing the two module ones 31 to move in the opposite direction.

[0035] It should be noted that the dovetail module 33 resists the vertical pressure through the inclined plane locking effect of the dovetail groove, and cooperates with the two sides of the module one 31 to squeeze towards the middle of the dovetail module 33 to eliminate the connection gap, so that the dovetail module 33 and the module one 31 can evenly bear the upper pressure during stamping.

[0036] When it is necessary to pick up the sheet after the stamping of the sheet is completed, the first telescopic rod 36 pushes the dovetail module 33 to move along the width direction of the lower template 30, so that the dovetail module 33 slides on the first slide bar 37. Since the first slide bar 37 is slidably matched with the first chute 38, the stability of the sliding of the dovetail module 33 is improved. After the dovetail module 33 moves out between the module one 31, the second telescopic rod 50 pushes the ejector rod 46, and the movement of the ejector rod 46 drives the relative movement of the module one 31, so that the vertical contact surface between the module one 31 and the sheet is separated, so as to avoid the friction of the vertical surface where the sheet contacts the module one 31 during picking. At the same time, in order to avoid the friction between the top of the module one 31 and the sheet when the module one 31 moves relatively, an extension component is also used to push the module one 31 upward when the module one 31 moves, which not only avoids friction but also pushes the sheet upward to facilitate picking.

[0037] As Figure 6 shown, the connection component includes: a motor 51, a connecting rod 52, a clamping block 53 and a clamping groove 55. The second telescopic rod 50 is composed of a piston cylinder and an extension rod, and the motor 51 is arranged inside the extension rod, and the motor 51 is close to the extension end of the extension rod. A rotating shaft is arranged at the output end of the motor 51. The connecting rod 52 is arranged at the end of the extension rod, and the connecting rod 52 is in transmission connection with the rotating shaft. The clamping blocks 53 are symmetrically arranged on the outer peripheral surface of the connecting rod 52. A second groove 54 is opened at one end of the ejector rod 46, and the clamping grooves 55 are symmetrically opened along the inner ring surface of the second groove 54, and the clamping grooves 55 and the clamping blocks 53 can cooperate with each other to realize the connection or disconnection between the second telescopic rod 50 and the ejector rod 46.

[0038] When the module one 31 is pushed, the second telescopic rod 50 drives the connecting rod 52 to move. The connecting rod 52 moves into the second groove 54. When the top end of the connecting rod 52 abuts against the bottom surface of the second groove 54, the second telescopic rod 50 will push the ejector rod 46 to move, so that the ejector rod 46 pushes the module one 31 to move, realizing the separation of the module one 31 from the side wall of the formed part, thus avoiding the friction of the vertical side wall. When it is necessary to reset the module one 31, the motor 51 drives the rotating shaft to rotate. The rotation of the rotating shaft drives the connecting rod 52 to rotate. The rotation of the connecting rod 52 drives the clamping block 53 to rotate, so that the clamping block 53 rotates into the clamping groove 55, so that when the second telescopic rod 50 contracts, it can drive the connecting rod 52 to move. Since the clamping block 53 rotates into the clamping groove 55, the connecting rod 52 moves to drive the ejector rod 46 to move, and the movement of the ejector rod 46 drives the module one 31 to move, so that the module one 31 is reset.

[0039] As Figures 4 to 7As shown in the figure, the top extension assembly includes: a top block 40, a guide rod 41, and a transmission rod 47. The transmission rod 47 is arranged on the outer peripheral surface of the ejector rod 46 and is perpendicular to the ejector rod 46. A first groove 42 and a guide groove 43 are formed on the top surface of module two 34. The top block 40 is arranged inside the first groove 42, and the top of the top block 40 is flush with the top surface of module two 34. The guide rods 41 are arranged on the outer walls on both sides of module two 34 and are slidably arranged inside the guide groove 43. An elastic member is arranged at the bottom end of the guide rod 41, and the elastic member can reset the guide rod 41 downward. A moving groove 44 is formed inside module two 34, and the transmission rod 47 is located inside the moving groove 44. A lower third groove 48 is formed inside the top block 40, and a triangular block 49 is arranged inside the lower third groove 48. The top surface of the transmission rod 47 abuts against the inclined surface of the triangular block 49.

[0040] When the ejector rod 46 moves to the left, the movement of the ejector rod 46 drives the movement of the transmission rod 47, so that the transmission rod 47 moves from right to left along the inclined surface of the triangular block 49 as Figure 7 shown in the figure, causing the transmission rod 47 to push the triangular block 49 upward. The movement of the triangular block 49 drives the upward movement of the top block 40. The upward movement of the top block 40 drives the sliding of the guide rod 41 inside the guide groove 43, and the guide rod 41 can enable the stable sliding of the top block 40, improving the stability of the sliding of the top block 40. The upward movement of the top block 40 thus pushes the forming part upward, causing the forming part to separate from the mold, facilitating the taking of the material. At the same time, it also avoids the friction between the vertical side wall and the top of module one 31 and the forming part, ensuring the product quality of the formed sheet and improving the production qualification rate. When the ejector rod 46 resets and moves to the right, the elastic member can drive the downward movement of the top block 40, thereby realizing the reset of the top block 40.

[0041] As Figures 4 to 8 shown in the figure, an oil cylinder 20 is arranged at the top of the frame 10. The stamping assembly is arranged at the output end of the oil cylinder 20, and the oil cylinder 20 can drive the stamping assembly to move up and down. The stamping assembly includes: an upper fixture 21, an upper mold 60, a first extrusion member 61, and a second extrusion member 62. The upper fixture 21 is arranged at the output end of the oil cylinder 20, and the upper mold 60 is arranged at the bottom of the upper fixture 21. The first extrusion member 61 and the second extrusion member 62 are a group, and two groups of the first extrusion member 61 and the second extrusion member 62 are respectively arranged on the left and right sides of the upper fixture 21. An elastic member is arranged inside the first extrusion member 61, and the second extrusion member 62 is elastically arranged inside the first extrusion member 61. When the oil cylinder 20 drives the upper fixture 21 to descend, the descent of the upper fixture 21 drives the descent of the upper mold 60, the first extrusion member 61, and the second extrusion member 62, so that the second extrusion member 62 first contacts the top of module two 34, enabling the second extrusion member 62 to extrude the sheet material, thereby improving the stability of the sheet material during hydroforming. As the upper mold 60 continues to descend, the sheet material is stamped and formed.

[0042] An elastic column 39 is provided at the top of Module 2 34, and the elastic column 39 is used to buffer the stamping assembly, thereby avoiding damage to the sheet metal during forming due to excessive impact force of the stamping assembly. At the same time, it avoids the situation where the formed part is firmly squeezed against the lower die due to excessive pressure, reducing scratches on the formed part during material taking.

[0043] As Figures 1 to 2 shown, a controller 11 is provided on the frame 10. The controller 11 is used to control the hydroforming of the sheet metal. A support plate 13 is provided on the outer wall of the frame 10, and a cylinder 14 is vertically provided on the support plate 13. The output end of the cylinder 14 is provided with a vertical rod 15, and an explosion-proof door 12 is provided at the bottom of the vertical rod 15. The explosion-proof door 12 is used to shield the processing and forming area. A guide rail 16 is vertically provided on the frame 10, and the explosion-proof door 12 is slidably engaged with the guide rail 16. When hydroforming the sheet metal, the cylinder 14 can push the vertical rod 15 downward, and the downward movement of the vertical rod 15 drives the explosion-proof door 12 to descend, so that the explosion-proof door 12 shields the processing area, avoiding safety accidents caused by fragments bursting out due to poor toughness of the sheet metal during hydroforming, and improving the safety of the equipment during use.

[0044] A hydroforming method for a metal sheet body according to the present invention includes: S1. First, place the sheet metal above the lower forming die, and then the oil cylinder 20 drives the stamping assembly to move downward, so that the stamping assembly stamps and forms the sheet metal; S2. The dovetail module 33 moves along the width direction of the lower template 30, so that there is a certain space between the two Module 1s 31. Then, the ejector rod 46 pushes the two Module 1s 31 to move relatively, so that the two Module 1s 31 are separated from the side wall of the formed part, ensuring the product quality of the formed part after hydroforming; S3. In order to avoid friction between the tops of the two Module 1s 31 and the formed part when they move relatively, the ejector rod 46 pushes the two Module 1s 31 to move relatively, driving the top extension assembly to push the formed part upward, so that there is a gap between the formed part and the Module 1s 31, and at the same time facilitating material taking; S4. When hydroforming the sheet metal, the cylinder 14 drives the explosion-proof door 12 to shield the processing area, improving the safety of the equipment during use.

[0045] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present invention.

[0046] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0047] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A hydraulic forming device for a metal plate body, characterized in that, Including: A frame (10); a workbench (22) is arranged on the frame (10), and a stamping assembly is arranged on the frame (10) for stamping and forming a sheet. A lower template (30) is arranged on the workbench (22); A dovetail module (33) is slidably arranged on the top of the lower template (30). Dovetail grooves are formed on two opposite side surfaces of the dovetail module (33), and the dovetail module (33) can slide along the width direction of the lower template (30); Module 1 (31) is arranged on the top of the lower template (30). There are two Module 1s (31), and the two Module 1s (31) are respectively arranged on both sides of the dovetail module (33). The opposite side walls of the two Module 1s (31) are respectively abutted against and slidably engaged with the two dovetail grooves. Two Module 2s (34) are arranged on the top of the lower template (30), and the Module 2s (34) are respectively located on both sides of the dovetail module (33), and Module 1 (31) corresponds to Module 2 (34) one by one; A push rod (46) is slidably arranged inside each of the Module 2s (34). The push rod (46) is used to push the two Module 1s (31) to move in opposite directions. An extending assembly is arranged inside the Module 2s (34), and the extending assembly is in transmission connection with the push rod (46). When the push rod (46) pushes the Module 1s (31) to move relatively, it drives the extending assembly to push the formed part upward, so that the extending assembly is used to push and discharge the formed part.

2. The hydraulic forming device for a metal plate body according to claim 1, characterized in that, A first slide bar (37) is arranged on the top of the lower template (30), and the first slide bar (37) is arranged along the width direction of the lower template (30). A first chute (38) is formed at the bottom of the dovetail module (33), and the first slide bar (37) is slidably engaged with the first chute (38). A support plate (35) is arranged on the top of the workbench (22). A first telescopic rod (36) is arranged on the outer wall of one side of the support plate (35), and the output end of the first telescopic rod (36) is connected to the side wall of the dovetail module (33).

3. The hydroforming device for a metal plate body according to claim 2, characterized in that, A housing is arranged on the frame (10). Second telescopic rods (50) are arranged on the opposite side walls of the housing. The second telescopic rods (50) can push the Module 2s (34) to move in opposite directions. A connecting assembly is arranged at the end of the second telescopic rod (50). The connecting assembly is used to connect with or disengage from the push rod (46) inside the Module 2s (34), and one end of the push rod (46) is fixedly connected to the side wall of the Module 1 (31).

4. A hydroforming device for a metal plate body according to claim 3, characterized in that, The connecting assembly includes: a motor (51), a connecting rod (52), a clamping block (53) and a clamping slot (55). The second telescopic rod (50) consists of a piston cylinder and an extending rod. The motor (51) is arranged inside the extending rod, and the motor (51) is close to the extending end of the extending rod. A rotating shaft is arranged at the output end of the motor (51). The connecting rod (52) is arranged at the end of the extending rod, and the connecting rod (52) is in transmission connection with the rotating shaft. The clamping blocks (53) are symmetrically arranged on the outer peripheral surface of the connecting rod (52). A second groove (54) is formed at one side end of the push rod (46), and the clamping slots (55) are symmetrically formed along the inner ring surface of the second groove (54).

5. A hydroforming device for a metal plate body according to claim 4, characterized in that, The top extension assembly includes: a top block (40), a guide rod (41), and a transmission rod (47). The transmission rod (47) is arranged on the outer peripheral surface of the ejector rod (46), and the transmission rod (47) is perpendicular to the ejector rod (46). A first groove (42) and a guide groove (43) are formed on the top surface of module two (34). The top block (40) is arranged inside the first groove (42), and the top of the top block (40) is flush with the top surface of module two (34). The guide rod (41) is arranged on the outer walls on both sides of module two (34), and the guide rod (41) is slidably arranged inside the guide groove (43).

6. A hydraulic forming device for a metal plate body according to claim 5, characterized in that, An elastic member is arranged at the bottom end of the guide rod (41), and the elastic member can reset the guide rod (41) downward. A moving groove (44) is formed inside module two (34), and the transmission rod (47) is located inside the moving groove (44). A lower third groove (48) is formed inside the top block (40), and a triangular block (49) is arranged inside the lower third groove (48), and the top surface of the transmission rod (47) abuts against the inclined surface of the triangular block (49).

7. A hydraulic forming device for a metal plate body according to claim 6, characterized in that, An oil cylinder (20) is arranged on the top of the frame (10). The stamping assembly is arranged at the output end of the oil cylinder (20), and the oil cylinder (20) can drive the stamping assembly to move up and down. The stamping assembly includes: an upper fixture (21), an upper die (60), a first extrusion member (61), and a second extrusion member (62). The upper fixture (21) is arranged at the output end of the oil cylinder (20), and the upper die (60) is arranged at the bottom of the upper fixture (21). The first extrusion member (61) and the second extrusion member (62) are in a group, and two groups of the first extrusion member (61) and the second extrusion member (62) are respectively arranged on the left and right sides of the upper fixture (21).

8. A hydroforming device for a metal plate body according to claim 7, characterized in that, An elastic member is arranged inside the first extrusion member (61), and the second extrusion member (62) is elastically arranged inside the first extrusion member (61). The first extrusion member (61) and the second extrusion member (62) are used for extruding and positioning the sheet. An elastic column (39) is arranged on the top of module two (34), and the elastic column (39) is used for buffering the stamping assembly.

9. A hydroforming device for a metal plate body according to claim 8, characterized in that, A controller (11) is arranged on the frame (10), and the controller (11) is used for controlling the hydraulic forming of the sheet. A support plate (13) is arranged on the outer wall of the frame (10), and a cylinder (14) is vertically arranged on the support plate (13). The output end of the cylinder (14) is provided with a vertical rod (15), and an explosion-proof door (12) is arranged at the bottom end of the vertical rod (15). The explosion-proof door (12) is used for shielding the processing and forming area. A guide rail (16) is vertically arranged on the frame (10), and the explosion-proof door (12) is slidably matched with the guide rail (16).

10. A hydraulic forming method for a metal plate body, characterized in that, Using a hydraulic forming device for a metal plate body according to any one of claims 1-9, comprising the following steps: S1. First, place the sheet above the lower forming die, and then the oil cylinder (20) drives the stamping assembly to move downward so that the stamping assembly stamps and forms the sheet; S2. The dovetail module (33) moves along the width direction of the lower template (30) to create a certain space between the two first modules (31). Subsequently, the ejector rod (46) pushes the two first modules (31) to move relative to each other, so that the two first modules (31) are separated from the side wall of the formed part, ensuring the product quality of the formed part after hydroforming. S3. To avoid friction between the tops of the two first modules (31) when they move relative to each other, the ejector rod (46) pushes the two first modules (31) to move relative to each other, driving the top extension assembly to push the formed part upward, so that a gap is formed between the formed part and the first module (31), and at the same time, it is convenient to take the material. S4. When hydroforming the sheet metal, the cylinder (14) drives the explosion-proof door (12) to shield the processing area, improving the safety of the equipment during use.

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