Press forming die for front cover inner panel opening

Abstract

The utility model relates to the technical field of automobile parts processing discloses the press forming die for front cover plate inner plate trepanning, including work table, the installation plane of lower mould is set up in work table upper surface, the lower mould is fixed on the installation plane, the recess that the size of front cover plate inner plate is matched is set up in the lower mould upper surface, the upper mould that is corresponding is equipped with in the lower mould upper side, the work table upper surface is evenly distributed with a few guide rods along the lower mould circumference, all guide rod top department jointly connect a support plate, the support plate top surface has the hydraulic pump for driving upper mould and moves up and down along the height direction, the hydraulic pump hydraulic stem passes through support plate and is detachably connected with the upper mould upper surface.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive parts processing, specifically to a pressing mold for opening holes in the inner panel of a front hood. Background Technology

[0002] With the rapid development of the automotive industry, the requirements for the precision, quality, and production efficiency of automotive parts are increasing. The inner panel of the front hood is an inner structural component of the engine compartment hood, forming a complete hood assembly with the outer panel. It is mostly made of high-strength materials and not only protects components within the engine compartment and provides mounting support, but also plays a crucial role in sound and heat insulation. The perforation process is particularly critical in its manufacturing.

[0003] The openings in the inner panel of the automotive front hood are a precise functional design. These openings, based on the layout of engine compartment components, provide accurate mounting positions for sensors, brackets, and other components. Through a rationally distributed distribution of ventilation holes, airflow is promoted, heat is quickly dissipated, and the stable operation of components such as the engine is ensured. In the trend towards lightweighting, scientifically planned openings reduce the amount of sheet metal used, lower vehicle weight, and improve fuel economy. Simultaneously, the specific shape and arrangement of the holes, combined with sound-insulating materials, effectively block engine noise, optimizing the driving and riding environment. Furthermore, the opening design also alleviates stress concentration during stamping, facilitating manufacturing and ensuring the efficiency and precision of the assembly of the inner panel of the front hood with the entire vehicle.

[0004] Currently, the pressing process for opening holes in the inner panel of the front hood mainly suffers from the following problems: Traditional molds use a mechanical cycle of "positioning-pressing-opening" during the opening process. The precise fit between the punch and the lower die shapes the sheet metal into the target hole under pressure. During the pressing stage, there is a risk that the sheet metal may not be pressed firmly onto the lower die surface, leading to displacement or deformation due to uneven stress during opening, resulting in decreased overall strength and stability. During the opening stage, because the sheet metal is not pressed firmly onto the lower die surface, there is a risk of uneven, excessively large, or excessively small gaps between the punch and the lower die, leading to rough hole edges, easy tearing, and burrs, increasing the scrap rate and failing to meet the requirements of large-scale, high-quality production in the automotive manufacturing industry. Utility Model Content

[0005] This utility model aims to provide a pressing mold for opening holes in the inner panel of the front cover, in order to solve the technical problems that the sheet material is not pressed tightly onto the surface of the lower mold during the pressing stage, which leads to displacement or deformation of the sheet material due to uneven force during punching, resulting in a decrease in overall strength and stability. Furthermore, during the opening stage, because the sheet material is not pressed tightly onto the surface of the lower mold, the gap between the opening device and the lower mold is uneven, too large or too small, which leads to rough hole edges, easy tearing, and burrs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: 1) A pressing mold for opening holes in the inner panel of a front cover, comprising a worktable, wherein the upper surface of the worktable is provided with a mounting plane for a lower mold, the lower mold is fixed on the mounting plane, the upper surface of the lower mold is provided with a groove matching the size of the inner panel of the front cover, an upper mold corresponding to the lower mold is provided above the lower mold, several guide rods are evenly distributed along the circumference of the lower mold on the upper surface of the worktable, the top of all guide rods are connected to a support plate, the top surface of the support plate is provided with a hydraulic pump for driving the upper mold to move up and down in the height direction, and the hydraulic rod of the hydraulic pump passes through the support plate and is detachably connected to the upper surface of the upper mold.

[0007] In this utility model, the workbench serves as the basic load-bearing component of the entire mold. Its upper surface has an installation plane for the lower mold, providing a stable installation base for the lower mold. The lower mold is fixedly installed on the installation plane of the workbench. The upper surface of the lower mold has a groove that matches the size of the inner plate of the front cover, which is used to place the sheet material to be processed, providing positioning and support for the sheet material. At the same time, during the pressing and drilling process, it limits the deformation range of the sheet material and ensures the accuracy of the processed shape.

[0008] A corresponding upper die is located above the lower die for pressing and punching the sheet metal. Guide rods evenly distributed along the axial direction of the lower die guide the movement of the upper die, ensuring smooth vertical movement and preventing wobbling and deviation. A support plate connects the tops of all guide rods, fixing and supporting them while providing a mounting surface for the hydraulic pump. The hydraulic pump drives the upper die, and the pressure can be adjusted as needed to accommodate sheet metal of different thicknesses. The upper die and hydraulic rods are detachably connected, facilitating the replacement of upper dies with different functions.

[0009] During installation, accurately install the lower mold on the mounting surface of the workbench and tighten it with bolts. Install the upper mold on the lower end of the hydraulic rod via a detachable connection. When operating, place the inner plate of the front cover to be processed into the groove of the lower mold, ensuring that the inner plate is fully embedded in the groove and accurately positioned. Adjust the pressure of the hydraulic pump and start it according to the processing requirements of the inner plate of the front cover. The hydraulic rod drives the upper mold to gradually approach the lower mold. The guide rod ensures that the upper mold moves vertically downward. When the upper mold contacts the lower mold, the hydraulic pump continues to apply pressure to press and open the inner plate of the upper mold.

[0010] The worktable, lower die, guide rod, and support plate form a robust support frame capable of withstanding the significant pressure generated during pressing and drilling, ensuring machining accuracy. The lower die groove matches the dimensions of the inner plate of the front cover, and the guide rod precisely guides the movement of the upper die, ensuring accurate relative positioning between the upper and lower dies. This allows for precise positioning of the sheet metal during processing, thereby guaranteeing the dimensional accuracy of drilling and pressing.

[0011] 2) The pressing mold for opening the inner panel of the front cover as described in 1), wherein: The upper mold includes a pressing mold and a cutting mold. The pressing mold is integrally formed by a pressing mold fixing plate and a clamping plate. The top of the pressing mold fixing plate is detachably connected to the free end of the hydraulic rod. The clamping plate faces the groove of the lower mold. The cutting mold consists of a perforating block and a perforating blade. A perforating blade is wrapped around the bottom of the perforating block. The top of the perforating block is detachably connected to the free end of the hydraulic rod.

[0012] In this invention, the upper mold includes a pressing mold and a cutting mold. The pressing mold is integrally formed by a pressing mold fixing plate and a clamping plate, which reduces the number of pressing mold parts and connection links, making the pressing mold structure more compact and more stable. The top of the pressing mold fixing plate and the top of the perforated pressure block are detachably connected to the free end of the hydraulic rod, which facilitates maintenance and repair and improves production efficiency.

[0013] During the clamping operation, the operator connects the top of the clamping plate of the clamping mold to the free end of the hydraulic rod. Under the action of the hydraulic rod, the clamping plate of the clamping mold presses the plate placed on the surface of the lower mold into the groove of the lower mold. After clamping, the hydraulic rod moves the clamping mold away from the lower mold. The operator removes the clamping mold and connects the top of the opening block of the cutting mold to the free end of the telescopic rod. The hydraulic rod moves the cutting mold down, and the opening blade of the cutting mold makes a hole at the corresponding position on the plate.

[0014] 3) The pressing mold for opening the inner panel of the front cover as described in 2), wherein: The pressure mold fixing plate has a first positioning groove at the center of one end facing the hydraulic rod, which is adapted to the outer diameter of the hydraulic rod. The perforated pressure block has a second positioning groove at the center of one end facing the hydraulic rod, which is adapted to the outer diameter of the hydraulic rod. The first positioning groove and the second positioning groove are used for embedding and fixing the hydraulic rod.

[0015] In this invention, the first positioning groove and the second positioning groove are located at the center of the die fixing plate and the perforated pressure block, respectively. After the hydraulic rod is connected to the first positioning groove or the second positioning groove, the force of the hydraulic rod can be accurately transmitted to the die or the cutting die, which improves the accuracy of sheet metal pressing and forming, reduces the processing error caused by the position deviation of the die or the cutting die, and improves the product quality. In addition, the hydraulic rod can be embedded in the first positioning groove or the second positioning groove to achieve the initial positioning of the die or the cutting die, which helps to improve the mold assembly efficiency.

[0016] 4) The pressing mold for opening the inner panel of the front cover as described in 3), wherein: The hydraulic rod has a radial mounting through hole in the middle. A connecting block that matches the mounting through hole is horizontally inserted into the mounting through hole. Bolt through holes are provided at both ends of the connecting block. The mold fixing plate and the perforated pressure block are respectively provided with threaded holes at the positions of the bolt through holes of the connecting block. The hydraulic rod is connected to the mold fixing plate or the perforated pressure block by passing the bolts through the bolt through holes and screwing them into the threaded holes in sequence.

[0017] In this invention, a mounting through hole is provided radially in the middle of the hydraulic rod. This through hole provides space for the connecting block to pass through, allowing the hydraulic rod to connect with the mold fixing plate or the perforated pressure block, thus enabling the conversion between pressing and perforating operations on the sheet metal. By sequentially passing bolts through the bolt through holes of the connecting block and screwing them into the threaded holes of the mold fixing plate or the perforated pressure block, this connection method provides a large clamping force, ensuring a firm connection between the hydraulic rod and the mold fixing plate or the perforated pressure block. During mold operation, the force of the hydraulic rod can be stably transmitted, ensuring the normal operation of the mold.

[0018] During installation, insert the connecting block horizontally through the mounting through hole in the middle of the hydraulic rod, exposing the bolt through holes at both ends of the connecting block. Align the threaded holes on the mold fixing plate or perforated pressure block with the bolt through holes of the connecting block. Then, pass the bolts through the bolt through holes at both ends of the connecting block and screw them into the corresponding threaded holes on the mold fixing plate or perforated pressure block. Tighten the bolts using a tool. For disassembly, loosen and remove the bolts using a tool. Then, remove the connecting block from the mounting through hole of the hydraulic rod. This will separate the hydraulic rod from the mold fixing plate or perforated pressure block for subsequent replacement operations.

[0019] 5) The pressing mold for opening the inner panel of the front cover as described in 1), wherein: The workbench has an installation slot corresponding to the position of the lower mold. A pressure sensor is embedded in the installation slot. The workbench also includes a microprocessor, which is electrically connected to the pressure sensor and the alarm.

[0020] In this invention, the shape and size of the mounting groove are adapted to the pressure sensor for precise installation of the pressure sensor, enabling the pressure sensor to accurately measure the pressure borne by the lower mold and to sense the pressure borne by the lower mold in real time.

[0021] During operation, the pressure sensor continuously monitors the pressure on the lower die and transmits the data to the microprocessor. When the pressure is abnormal, the alarm can be issued in time, and the operator can make adjustments as needed to prevent the sheet material from not being pressed firmly onto the surface of the lower die due to insufficient pressure, or to prevent the die and equipment from being damaged due to excessive pressure.

[0022] 6) The pressing mold for opening the inner panel of the front cover as described in 1), wherein: The guide rod is sleeved with the positioning rod, and the positioning rod can slide up and down along the guide rod. The end of the positioning rod away from the guide rod is detachably connected to the mold fixing plate or the perforated pressure block.

[0023] In this invention, the positioning rod is connected to the guide rod via a guide sleeve. The inner diameter of the guide sleeve is adapted to the guide rod, allowing the positioning rod to slide smoothly on the guide rod via the guide sleeve. The guiding effect of the guide rod on the positioning rod ensures that the die fixing plate or the perforating block maintains an accurate position during its up-and-down movement, helping to reduce processing errors caused by die movement deviations and improving the quality of the pressed and formed perforated sheet metal.

[0024] During operation, the hydraulic rod drives the pressing mold fixing plate or the perforating pressing block to move, and the positioning rod slides up and down along the guide rod, providing guidance and support for the movement of the pressing mold fixing plate or the perforating pressing block. The operator completes the pressing and forming process of perforating the sheet material by controlling the movement of the hydraulic rod.

[0025] 7) The pressing mold for opening the inner panel of the front cover as described in 6), wherein: The positioning rod has a protrusion near the mold fixing plate or the perforated pressure block, and the mold fixing plate and the perforated pressure block have openings at the corresponding positions of the protrusion for the protrusion to be inserted.

[0026] In this invention, the protrusion is cylindrical, and its size and shape match the openings on the die fixing plate and the perforated pressure block. It is used to embed into the openings, achieving precise positioning of the positioning rod with the die fixing plate or the perforated pressure block. This ensures that the die fixing plate and the perforated pressure block are accurately positioned during die installation and operation, helping to improve the overall precision and stability of the die, thereby guaranteeing the quality of sheet metal perforation and pressing. Furthermore, the structure of the protrusion embedding into the opening facilitates die installation and debugging, reducing debugging time and improving work efficiency.

[0027] During installation, the connection between components is completed by aligning the protrusion of the positioning rod with the opening on the mold fixing plate or the opening pressure block. During the mold operation, the positioning rod slides up and down under the guidance of the guide rod, and at the same time, through the cooperation of the protrusion and the opening, it drives the mold fixing plate or the opening pressure block to move accurately, realizing the pressing and forming operation of the opening on the sheet material.

[0028] Compared with the prior art, the present invention has the following technical advantages: In this invention, the upper mold includes a pressing mold and a cutting mold. The pressing mold is integrally formed by a pressing mold fixing plate and a clamping plate. The top of the pressing mold fixing plate and the top of the perforated pressure block of the cutting mold are detachably connected to the free end of the hydraulic rod. Compared with the prior art, this invention reduces the number of pressing mold parts and connection links, making the pressing mold structure more compact and more stable. The detachable connection between the top of the pressing mold fixing plate and the top of the perforated pressure block and the free end of the hydraulic rod facilitates maintenance and repair, and improves production efficiency.

[0029] Meanwhile, the positioning rod is provided with a protrusion near the mold fixing plate or the perforated pressure block, and the mold fixing plate and the perforated pressure block are provided with openings for the protrusion to be inserted at the corresponding positions. This achieves precise positioning of the positioning rod and the mold fixing plate or the perforated pressure block, ensuring that the position of the mold fixing plate and the perforated pressure block is accurate during mold installation and operation. This helps to improve the overall accuracy and stability of the mold, thereby ensuring the quality of sheet metal perforation and pressing.

[0030] In addition, the workbench has a mounting slot corresponding to the lower mold position. The mounting slot is embedded with a pressure sensor and a microprocessor. The microprocessor is electrically connected to the pressure sensor and the alarm respectively. When the pressure is abnormal, the alarm can sound an alarm in time. The operator can make adjustments as needed to prevent the sheet material from not being pressed tightly on the lower mold surface due to insufficient pressure, or to prevent the mold and equipment from being damaged due to excessive pressure. Attached Figure Description

[0031] Figure 1 This is a cross-sectional view of the pressing mold used for opening holes in the inner panel of the front cover plate according to Embodiment 1 of this utility model; Figure 2 This is a cross-sectional view of the pressing mold used for opening holes in the inner panel of the front cover in Embodiment 2 of this utility model. Detailed Implementation

[0032] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: hydraulic pump 1, fixed plate 2, support plate 3, hydraulic rod 4, mold fixing plate 5, clamping plate 6, positioning rod 7, guide rod 8, lower mold 9, pressure sensor 10, worktable 11, hole-opening pressure block 12, hole-opening blade 13, and connecting block 14.

[0033] Reference will now be made in detail to the embodiments disclosed herein. Although this disclosure will be described in conjunction with embodiments and / or examples, they are not intended to limit this disclosure to those embodiments and / or examples. Rather, this disclosure covers alternatives, modifications, and equivalents.

[0034] Example 1, see Figure 1As shown, this embodiment is a pressing mold for opening holes in the inner panel of the front cover. The workbench 11 serves as the basic supporting component of the entire mold. The top surface of the workbench 11 is provided with an installation plane that is adapted to the size of the lower mold 9. The lower mold 9 has an extension edge on its periphery. The surface of the installation plane is provided with a positioning groove that is adapted to the extension edge of the lower mold 9. The thickness of the extension edge on the periphery of the lower mold 9 is consistent with the depth of the positioning groove on the installation plane of the workbench 11, so that the top of the lower mold 9 is flush with the top of the workbench 11 after installation.

[0035] Multiple through holes are distributed along the periphery of the workbench 9, penetrating both the upper and lower surfaces of the workbench. The mounting plane of the worktable 11 has internally threaded holes of matching size at the positions corresponding to the through holes on the lower mold 9's workbench. During assembly, the lower mold 9 is placed in the positioning groove, aligning the through holes on the workbench with the internally threaded holes on the worktable 11. Bolts are then passed through the through holes on the workbench and screwed into the internally threaded holes on the worktable 11, achieving a secure connection between the lower mold 9 and the worktable 11.

[0036] Several guide rods 8 are screwed onto the upper part of the workbench 11. A support plate 3 is screwed onto the top of the guide rods 8. The support plate 3 is perpendicular to the guide rods 8, forming a horizontal bearing plane and creating an installation platform for the hydraulic pump 1. A fixing plate 2 is vertically installed on the support plate 3 using angle iron. The hydraulic pump 1 is held tightly to the fixing plate 2 using clamps and bolts. The support plate 3 has a pre-drilled hole that matches the size of the hydraulic rod 4 that is matched with the hydraulic pump 1. The hydraulic rod 4 extends out from the pre-drilled hole in the support plate 3 and can extend and retract in the vertical direction. The free end of the hydraulic rod 4 is detachably connected to the upper mold.

[0037] During the mold operation, the hydraulic rod 4, driven by the hydraulic pump 1, moves the upper mold toward the lower mold 9, pressing the sheet material placed on the surface of the lower mold 9 onto the surface of the lower mold 9, and performing a shaping operation on the sheet material.

[0038] In this embodiment, the upper mold is the pressure mold, which performs a pressing operation on the sheet metal. The pressure mold is integrally formed by the pressure mold fixing plate 5 and the clamping plate 6, making the pressure mold structure more compact and more stable. The clamping plate 6 faces the groove of the lower mold 9, and the top of the pressure mold fixing plate 5 is detachably connected to the free end of the hydraulic rod 4, which facilitates maintenance and repair and improves production efficiency.

[0039] During implementation, the operator connects the top of the upper mold to the free end of the telescopic rod 4. Driven by the telescopic rod 4, the upper mold presses the plate placed on the surface of the lower mold 9 into the groove of the lower mold 9. After pressing, the telescopic rod 4 moves the upper mold away from the lower mold, and the operator removes the upper mold to replace it with an upper mold of a different function for subsequent operations.

[0040] The center of the end of the mold fixing plate 5 facing the hydraulic rod 4 is provided with a first positioning groove that is adapted to the outer diameter of the hydraulic rod 4. The first positioning groove is used for the insertion and fixing of the hydraulic rod 4.

[0041] The first positioning groove is located at the center of the mold fixing plate 5. After the hydraulic rod 4 is connected to the first positioning groove, the force of the hydraulic rod 4 can be accurately transmitted to the mold fixing plate 5 and the clamping plate 6, which improves the accuracy of sheet metal pressing and forming, reduces the processing error caused by the positional deviation of the mold fixing plate 5 and the clamping plate 6, and improves product quality. In addition, the hydraulic rod 4 can achieve the initial positioning of the mold fixing plate 5 and the clamping plate 6 by embedding it into the first positioning groove, which helps to improve the mold assembly efficiency.

[0042] The hydraulic rod 4 has a radial mounting through hole in the middle. A connecting block 14 that matches the mounting through hole is inserted horizontally into the mounting through hole. Bolt through holes are provided at both ends of the connecting block 14. The mold fixing plate 5 has threaded holes at the positions corresponding to the bolt through holes of the connecting block 14. The hydraulic rod 4 is connected to the mold fixing plate 5 by passing the bolts through the bolt through holes and screwing them into the threaded holes.

[0043] In this invention, the mounting through hole provides space for the connecting block 14 to pass through, allowing the hydraulic rod 4 to connect with the mold fixing plate 5 and perform a pressing operation on the plate. By sequentially passing bolts through the bolt through holes of the connecting block 14 and screwing them into the threaded holes of the mold fixing plate 5, this connection method provides a large clamping force, ensuring a firm connection between the hydraulic rod 4 and the mold fixing plate 5. During mold operation, the force of the hydraulic rod 4 can be stably transmitted, ensuring the normal operation of the mold.

[0044] During installation, the connecting block 14 is horizontally inserted through the mounting through hole in the middle of the hydraulic rod 4, exposing the bolt through holes at both ends of the connecting block 14. The threaded holes on the mold fixing plate 5 are aligned with the bolt through holes of the connecting block 14. Then, the bolts are passed through the bolt through holes at both ends of the connecting block 14 and screwed into the threaded holes of the mold fixing plate 5. The bolts are then tightened using a tool. During disassembly, the bolts are loosened and removed using a tool. The connecting block 14 is then removed from the mounting through hole of the hydraulic rod 4, allowing the hydraulic rod 4 to be separated from the mold fixing plate 5 for subsequent replacement operations.

[0045] The pressure sensor 10 is located between the lower mold 9 and the worktable 11. The worktable 11 has a mounting groove corresponding to the lower mold 9, which is adapted to the shape and size of the pressure sensor 10. The pressure sensor 10 is embedded in the mounting groove. A microprocessor is also provided in the mounting groove, and the microprocessor is electrically connected to the pressure sensor 10 and the alarm.

[0046] During operation, the pressure sensor 10 continuously monitors the pressure on the lower mold 9 and transmits the data to the microprocessor. When the pressure is abnormal, the alarm will sound in time, and the operator can make adjustments as needed to prevent the sheet material from not being pressed tightly onto the surface of the lower mold 9 due to insufficient pressure, or to prevent the mold and equipment from being damaged due to excessive pressure.

[0047] A guide sleeve is screwed onto the side where the positioning rod 7 connects to the guide rod 8. The inner diameter of the guide sleeve is adapted to the guide rod 8. The guide rod 8 passes through the guide sleeve, and the positioning rod 7 is arranged horizontally. The positioning rod 7 moves smoothly on the guide rod 8 through the guide sleeve. The end of the positioning rod 7 away from the guide rod 8 is detachably connected to the mold fixing plate 5. The guiding effect of the guide rod 8 on the positioning rod 7 ensures that the mold fixing plate 5 maintains an accurate position during up and down movement, which helps to reduce processing errors caused by mold movement deviations and improves the pressing and forming quality of the sheet metal opening.

[0048] During operation, hydraulic rod 4 drives the upper mold to move, and positioning rod 7 slides up and down along guide rod 8, providing guidance and support for the movement of the upper mold. The operator controls the movement of hydraulic rod 4 to complete the pressing and forming process of opening holes in the sheet metal.

[0049] The positioning rod 7 has a protrusion near the mold fixing plate 5, and the mold fixing plate 5 has an opening corresponding to the protrusion for the protrusion to be inserted. The protrusion is cylindrical, and its size and shape match the opening on the mold fixing plate 5. This allows for precise positioning of the positioning rod 7 and the mold fixing plate 5, ensuring accurate positioning of the mold fixing plate 5 during mold installation and operation. This helps improve the overall precision and stability of the mold, thereby guaranteeing the quality of sheet metal perforation and pressing. Furthermore, the structure of the protrusion inserting into the opening facilitates mold installation and adjustment, reducing installation and adjustment time and improving work efficiency.

[0050] During installation, the connection between components is completed by aligning the protrusion of the positioning rod 7 with the opening on the mold fixing plate 5. During the mold operation, the positioning rod 7 slides up and down under the guidance of the guide rod 8, and at the same time, through the cooperation of the protrusion and the opening, it drives the mold fixing plate 5 to move accurately, realizing the pressing operation of the sheet material.

[0051] Example 2, see Figure 2 As shown, the difference from Embodiment 1 is that the upper mold is replaced with a cutting mold, which consists of a hole-opening pressure block 12 and a hole-opening blade 13. A hole-opening blade 13 is wrapped around the bottom of the hole-opening pressure block 12, and the top of the hole-opening pressure block 12 is detachably connected to the free end of the hydraulic rod 4. The top of the hole-opening pressure block 12 of the cutting mold is connected to the free end of the telescopic rod 4, and the hydraulic rod 4 drives the cutting mold to move down, and the hole-opening blade 13 of the cutting mold makes holes at the corresponding positions on the plate.

[0052] The perforated pressure block 12 has a second positioning groove at the center of the end facing the hydraulic rod 4, which is adapted to the outer diameter of the hydraulic rod 4. The second positioning groove is used for embedding and fixing the hydraulic rod 4. The second positioning groove is located at the center of the perforated pressure block 12. After the hydraulic rod 4 is connected to the second positioning groove, the force of the hydraulic rod 4 can be accurately transmitted to the die, which improves the accuracy of sheet metal pressing and forming, reduces the processing error caused by die position deviation, and improves product quality. In addition, the hydraulic rod 4 can achieve the initial positioning of the die by embedding into the second positioning groove, which helps to improve the efficiency of die assembly.

[0053] The perforated pressure block 12 has threaded holes at the positions corresponding to the bolt through holes of the connecting block 14. The hydraulic rod 4 is connected to the perforated pressure block 12 by passing the bolts through the bolt through holes and screwing them into the threaded holes. This connection method can provide a large tightening force, making the connection between the hydraulic rod 4 and the perforated pressure block 12 firm. During the operation of the mold, it can stably transmit the force of the hydraulic rod 4, ensuring the normal operation of the mold.

[0054] The end of the positioning rod 7 furthest from the guide rod 8 is detachably connected to the perforated pressure block 12. A protrusion is provided on the positioning rod 7 near the perforated pressure block 12, and a corresponding opening on the perforated pressure block 12 is provided for the protrusion to be inserted. The size and shape of the protrusion match the opening on the perforated pressure block 12, allowing it to be inserted into the opening, thus achieving precise positioning of the positioning rod 7 and the perforated pressure block 12. During operation, the hydraulic rod 4 drives the perforated pressure block 12 to move, and the positioning rod 7 slides up and down along the guide rod 8, providing guidance and support for the movement of the perforated pressure block 12. The operator controls the movement of the hydraulic rod 4 to complete the perforation pressing process.

[0055] The above are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A pressing mold for creating openings in the inner panel of a front cover, characterized in that, The device includes a worktable with a mounting plane for a lower mold on its upper surface. The lower mold is fixed on the mounting plane. The upper surface of the lower mold has a groove that matches the size of the inner plate of the front cover. A corresponding upper mold is provided above the lower mold. Several guide rods are evenly distributed along the circumference of the lower mold on the upper surface of the worktable. The tops of all the guide rods are connected to a support plate. A hydraulic pump for driving the upper mold to move up and down in the height direction is provided on the top surface of the support plate. The hydraulic rod of the hydraulic pump passes through the support plate and is detachably connected to the upper surface of the upper mold.

2. The pressing mold for opening holes in the inner panel of the front cover plate according to claim 1, characterized in that: The upper mold includes a pressing mold and a cutting mold. The pressing mold is integrally formed by a pressing mold fixing plate and a clamping plate. The top of the pressing mold fixing plate is detachably connected to the free end of the hydraulic rod. The clamping plate faces the groove. The cutting mold consists of a perforating block and a perforating blade. A perforating blade is wrapped around the bottom of the perforating block. The top of the perforating block is detachably connected to the free end of the hydraulic rod.

3. The pressing mold for opening holes in the inner panel of the front cover plate according to claim 2, characterized in that: The pressure mold fixing plate has a first positioning groove at the center of one end facing the hydraulic rod, which is adapted to the outer diameter of the hydraulic rod. The perforated pressure block has a second positioning groove at the center of one end facing the hydraulic rod, which is adapted to the outer diameter of the hydraulic rod. The first positioning groove and the second positioning groove are used for embedding and fixing the hydraulic rod.

4. The pressing mold for opening holes in the inner panel of the front cover plate according to claim 3, characterized in that: The hydraulic rod has a radial mounting through hole in the middle. A connecting block that matches the mounting through hole is horizontally inserted into the mounting through hole. Bolt through holes are provided at both ends of the connecting block. The mold fixing plate and the perforated pressure block are respectively provided with threaded holes at the positions of the bolt through holes of the connecting block. The hydraulic rod is connected to the mold fixing plate or the perforated pressure block by passing the bolts through the bolt through holes and screwing them into the threaded holes in sequence.

5. The pressing mold for opening holes in the inner panel of the front cover plate according to claim 1, characterized in that: The workbench has an installation slot corresponding to the position of the lower mold. A pressure sensor is embedded in the installation slot. The workbench also includes a microprocessor, which is electrically connected to the pressure sensor and the alarm.

6. The pressing mold for opening holes in the inner panel of the front cover plate according to claim 1, characterized in that: The guide rod is sleeved with the positioning rod, and the positioning rod can slide up and down along the guide rod. The end of the positioning rod away from the guide rod is detachably connected to the mold fixing plate or the perforated pressure block.

7. The pressing mold for opening holes in the inner panel of the front cover plate according to claim 6, characterized in that: The positioning rod has a protrusion near the mold fixing plate or the perforated pressure block, and the mold fixing plate and the perforated pressure block have openings at the corresponding positions of the protrusion for the protrusion to be inserted.

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