A light plate processing die structure and a demolding method convenient for demolding

Abstract

The application relates to the technical field of mold devices, and discloses a light plate processing mold structure facilitating demolding, which comprises a machine base, a lower mold base arranged on the upper side of the machine base, and an upper mold base arranged directly above the lower mold base, further comprises a demolding cylinder arranged in the machine base, a force relieving assembly arranged on the top of the demolding cylinder, and a knocking assembly arranged on the force relieving assembly. The light plate processing mold structure facilitating demolding pushes the force relieving seat to move upwards through the demolding cylinder, promotes the automatic screwing of the movable lead screw under the action of the threaded sleeve, so that the screwing force relieving effect is achieved, and the movable lead screw simultaneously extrudes the elastic supporting pad in the process of screw force relieving, the elastic force of the elastic supporting pad is utilized to further achieve the purpose of buffering the force relieving, the damage of the plate product caused by the excessively large ejection force is effectively avoided, the possibility of the deformation of the plate product in the demolding process is prevented, and the product failure rate is reduced.

Description

Technical Field

[0001] This invention belongs to the field of mold device technology, and in particular relates to a mold structure and demolding method for processing lightweight sheet metal that facilitates demolding. Background Technology

[0002] Lightweight panels are building materials made of inorganic or organic materials. They are characterized by their light weight, high strength, and excellent thermal and sound insulation properties. In the production process of lightweight panels, molds are one of the key process equipment.

[0003] Currently, existing mold equipment still has the following problems in the production of lightweight sheet metal: After the existing stamping dies complete the stamping, the upper and lower dies separate, and the molded product in the mold cavity needs to be ejected by a demolding mechanism. When the product area in the mold cavity is large, the gripping force between the product and the side wall of the mold cavity is large. When the demolding mechanism ejects the product, the excessive ejection force can easily damage the product. The violent ejection force can easily cause product deformation, thereby increasing the product defect rate. Therefore, there are shortcomings that cannot meet the production needs of manufacturers, and further improvement is necessary.

[0004] Therefore, in view of this, we will study and improve the existing structure and its shortcomings, and provide a mold structure and demolding method for processing lightweight sheet metal that is easy to demold, in order to achieve a more practical purpose. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a mold structure and demolding method for processing lightweight sheet metal that facilitates demolding, achieved by the following specific technical means:

[0006] A mold structure for processing lightweight sheet metal that facilitates demolding includes a base, a lower mold base disposed on the upper side of the base, and an upper mold base disposed directly above the lower mold base. It also includes a demolding cylinder disposed inside the base, a force-relieving component disposed on the top of the demolding cylinder, and a striking component disposed on the force-relieving component.

[0007] The top of the lower mold base is provided with a mold cavity, and a stripper plate is provided in the mold cavity to support the sheet material product.

[0008] The unloading component is located between the demolding cylinder and the stripper plate. It is used to buffer and unload excessive demolding force on the product. The unloading component includes a movable lead screw that can rotate under pressure. The striking component is fixedly assembled on the outer periphery of the movable lead screw. The movable lead screw unloads excessive ejection force on the product by rotating, and simultaneously drives the striking component to rotate, and evenly and slightly taps and vibrates the bottom periphery of the stripper plate.

[0009] As a further description of the above technical solution: by pushing the unloading seat upward by the demolding cylinder, the unloading component is used to buffer the unloading force, effectively avoiding damage to the sheet product caused by excessive ejection force, and at the same time preventing the possibility of deformation of the sheet product during demolding, thus reducing the product defect rate.

[0010] Furthermore, the unloading assembly includes an unloading seat, the unloading seat has an inner cavity, and a threaded sleeve is fixedly provided on the inner wall of the inner cavity. The threaded sleeve is located on the outer periphery of the movable lead screw. The inner side of the threaded sleeve has an internal thread that is threaded to engage with the movable lead screw. The unloading plate pushes the movable lead screw to engage with the threaded sleeve and rotate to unload the force.

[0011] The upper end of the movable lead screw is rotatably connected to the unloading plate via a rotating ball. An elastic support pad is provided between the lower end of the movable lead screw and the bottom of the cavity inside the unloading seat. Bearings are provided at both the upper and lower ends of the movable lead screw, and the upper and lower ends of the movable lead screw are rotatably connected to the rotating ball and the elastic support pad respectively via the bearings.

[0012] The unloading seat is slidably mounted with a sliding sleeve on its outer periphery, and the outer wall of the sliding sleeve is fixedly connected to the lower mold base.

[0013] As a further description of the above technical solution: the movable lead screw automatically engages under the action of the threaded sleeve, thereby achieving the effect of engagement and force relief. In addition, the movable lead screw simultaneously squeezes the elastic support pad during the spiral force relief process, and the elastic force of the elastic support pad further serves the purpose of buffering and force relief.

[0014] Furthermore, the striking assembly includes a mounting sleeve, which is fixedly assembled on the outer periphery of the movable lead screw. Two crossbars are symmetrically installed on the outer periphery of the mounting sleeve. Each of the two crossbars has a movable groove inside, and a movable block is slidably installed inside the movable groove.

[0015] The left and right sides of the movable block are elastically connected to the inner wall of the movable groove by connecting springs. A striking link is fixedly mounted on the upper side of the movable block, and the upper end of the striking link extends to the outside of the crossbar and is fixedly connected to the striking component.

[0016] As a further description of the above technical solution: the crossbar drives the striking link and the striking component to move along the slide rail of the slide block, and the striking component continuously contacts the protrusion in the slide rail, so as to generate a slight vibration frequency on the unloading plate. Under the influence of the vibration frequency, the contact point between the sheet product and the mold cavity side wall vibrates and separates, which helps the sheet product to be demolded.

[0017] Furthermore, a stabilizing groove is provided on the side wall of the movable groove. A stabilizing slider is fixedly installed on the side of the movable block opposite to the stabilizing groove, and the stabilizing slider is located in the stabilizing groove. The movable block slides in the movable groove and simultaneously uses the stabilizing slider to slide in the stabilizing groove for stable sliding.

[0018] As a further description of the above technical solution: by having the movable block slide in the movable groove while the stabilizing slider slides synchronously in the stabilizing groove, the stability of the movable block in the movable groove and the striking part sliding in the slide rail can be improved, thereby further enhancing its practical effect.

[0019] Furthermore, a slide block is fixedly installed at the bottom of the unloading plate, and the slide block is in an irregular ring shape. A slide rail is provided at the bottom of the slide block, and several protrusions are fixedly installed on the top wall of the slide rail, and the protrusions are hemispherical.

[0020] The striking component is located in the slide rail. The moving lead screw rotates to drive the crossbar to rotate synchronously. The striking link drives the striking component to strike the protrusion in the slide rail, and causes the slide block and unloading plate to vibrate.

[0021] As a further description of the above technical solution: by setting the slide block into an irregular ring shape, the vibration position of the unloading plate can be continuously changed, moving back and forth from the inside to the outside and then from the outside to the inside, which can further enhance the demolding effect of the unloading plate on the sheet material product.

[0022] Furthermore, a fixed bracket for support is fixedly installed at the bottom of the upper die base, and the bottom of the fixed bracket is fixedly assembled on the upper surface of the machine base. A stamping assembly is provided inside the upper die base, and the stamping assembly performs stamping operations on the sheet metal above the lower die base.

[0023] As a further description of the above technical solution: the setting of the stamping components facilitates the stamping operation of the sheet metal, and the setting of the fixed bracket facilitates the installation of the upper die base and the stamping components.

[0024] Furthermore, the stamping assembly includes a stamping mechanism, which is fixedly assembled inside the upper die base. The telescopic end of the stamping mechanism is fixedly connected to a moving die. The moving die is fixedly assembled inside a stamping part for stamping the sheet metal, and the size of the stamping part is consistent with the size of the die cavity.

[0025] As a further description of the above technical solution: the stamping mechanism pushes the moving die downward, and the stamping part is used to stamp the sheet material. The stamped sheet product is located in the mold cavity, and after stamping, the stamping mechanism drives the moving die upward to return to the initial position.

[0026] Furthermore, two conveying components are fixedly mounted on the upper part of the base, and the two conveying components are respectively located on the left and right sides of the lower mold base. The conveying component located on the left side of the lower mold base is used for feeding the sheet metal, and the conveying component located on the right side of the lower mold base is used for unloading the waste sheet metal.

[0027] As a further description of the above technical solution: the sheet material is placed above the conveying component on the left side of the upper mold base, which is used to feed the sheet material autonomously, and the conveying component on the right side is used to unload and convey the waste sheet material.

[0028] Furthermore, the conveying assembly includes a conveying base, on which a conveying roller is rotatably mounted. A conveying motor is fixedly mounted on the front side of the conveying base. The side of the conveying motor facing the conveying base is fixedly connected to the rotating shaft of the conveying roller via its output end. A conveying belt is movably arranged on the outer periphery of the conveying roller. The conveying motor drives the conveying roller to rotate and the conveying belt is used to convey the sheet material.

[0029] As a further description of the above technical solution: the conveyor motor is started by external program control, and the output end of the conveyor motor drives the conveyor roller to rotate, which causes the conveyor roller to drive the conveyor belt to move. The moving conveyor belt drives the sheet material to feed and discharge autonomously, which further improves its applicability.

[0030] A method for demolding molds used in processing lightweight sheet metal, comprising the following steps:

[0031] S1: The sheet material is placed above the conveying component on the left side of the machine base, and the conveying component drives the sheet material to feed autonomously;

[0032] S2: The moving die is pushed down by the stamping mechanism, and the stamping parts are used to stamp the sheet material.

[0033] S3: The stamped sheet metal product falls into the mold cavity, and the stamping mechanism moves the moving mold upward to return to the initial position;

[0034] S4: The piston rod at the top of the demolding cylinder pushes the unloading seat and the unloading plate to move up, and the unloading plate pushes the formed sheet product to perform demolding operation, so as to realize the autonomous demolding of the sheet product;

[0035] S5: When the gripping force between the sheet material and the mold cavity sidewall is large, the force relief component is used for buffering and force relief.

[0036] S6: The crossbar drives the striking part to move along the slide rail of the slide block, and the striking part contacts the protrusion in the slide rail to generate a slight vibration frequency on the stripper plate. Under the influence of the vibration frequency, the contact point between the sheet product and the mold cavity side wall vibrates and separates, which helps the sheet product to be demolded.

[0037] S7: Demold the stamped product and continue to the next cycle.

[0038] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0039] 1. This mold structure for processing lightweight sheet metal that facilitates demolding uses a demolding cylinder to push the unloading seat upwards, causing the movable lead screw to automatically engage under the action of the threaded sleeve, thereby achieving the effect of unloading force through engagement. During the process of unloading force through the screw, the movable lead screw also squeezes the elastic support pad, and the elastic force of the elastic support pad further buffers the unloading force, effectively preventing excessive ejection force from damaging the sheet metal product. At the same time, it can prevent the possibility of deformation of the sheet metal product during demolding and reduce the product defect rate.

[0040] 2. This mold structure for processing lightweight sheet metal, which facilitates demolding, uses a crossbar to drive the striking linkage and striking components to move along the slide rail of the slide block. The striking components continuously contact the protrusions in the slide rail, generating a slight vibration frequency on the stripper plate. Under the influence of the vibration frequency, the contact point between the sheet metal product and the mold cavity sidewall vibrates and separates, which helps the sheet metal product to be demolded. Furthermore, by setting the slide block into an irregular ring shape, the vibration position of the stripper plate can be continuously changed, reciprocating from the inside to the outside and then from the outside to the inside, which can further enhance the demolding effect of the stripper plate on the sheet metal product.

[0041] 3. This mold structure for processing lightweight sheet metal that facilitates demolding improves the stability of the movable block in the movable groove and the sliding of the striking part in the slide rail by using a stable slider to slide synchronously in the stable slide groove while the movable block slides in the movable groove, thereby further enhancing its practical effect. Attached Figure Description

[0042] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 A schematic diagram of the overall three-dimensional structure provided according to an embodiment of the present invention is shown;

[0044] Figure 2 A schematic diagram of the mounting structure of the base and conveying assembly provided according to an embodiment of the present invention is shown;

[0045] Figure 3 A schematic diagram of the overall structure of the conveying assembly provided according to an embodiment of the present invention is shown;

[0046] Figure 4 A schematic diagram of the installation structure of the upper die holder and the stamping assembly according to an embodiment of the present invention is shown;

[0047] Figure 5 A schematic diagram of the mounting structure of the base and the lower mold base provided according to an embodiment of the present invention is shown;

[0048] Figure 6 A schematic diagram of the installation structure of the unloading cylinder and the unloading plate provided according to an embodiment of the present invention is shown;

[0049] Figure 7 A schematic diagram of the unloading plate and slide mounting structure provided according to an embodiment of the present invention is shown;

[0050] Figure 8 A schematic diagram of the installation structure of the force-relieving component and the impact component provided according to an embodiment of the present invention is shown;

[0051] Figure 9 A partial structural schematic diagram of the unloading assembly provided according to an embodiment of the present invention is shown;

[0052] Figure 10 A schematic diagram of the installation structure of the unloading screw and elastic support pad provided according to an embodiment of the present invention is shown;

[0053] Figure 11 A partial structural diagram of a striking component provided according to an embodiment of the present invention is shown;

[0054] Figure 12 A schematic diagram of the mounting structure of the slide and the striking link provided according to an embodiment of the present invention is shown.

[0055] Legend:

[0056] 10. Machine base; 11. Lower mold base; 111. Mold cavity; 12. Upper mold base; 121. Fixed bracket; 13. Ejector plate; 14. Demolding cylinder;

[0057] 20. Stamping assembly; 21. Stamping mechanism; 22. Moving die; 23. Stamped part;

[0058] 30. Conveying assembly; 31. Conveying base; 32. Conveying roller; 33. Conveying motor; 34. Conveying belt;

[0059] 40. Unloading assembly; 41. Unloading seat; 411. Sliding sleeve; 42. Threaded sleeve; 43. Screw; 44. Elastic support pad; 45. Rotating ball; 46. Bearing;

[0060] 50. Striking assembly; 51. Mounting sleeve; 52. Crossbar; 521. Movable groove; 522. Stabilizing slide; 53. Movable block; 531. Stabilizing slider; 54. Connecting spring; 55. Striking linkage; 551. Striking component;

[0061] 60. Slide block; 61. Slide rail; 62. Protrusion. Detailed Implementation

[0062] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0063] Please see Figures 1 to 12 A mold structure for processing lightweight sheet metal that facilitates demolding includes a base 10, a lower mold base 11 disposed on the upper side of the base 10, and an upper mold base 12 disposed directly above the lower mold base 11. It also includes a demolding cylinder 14 disposed inside the base 10, a force-relieving component 40 disposed on the top of the demolding cylinder 14, and a striking component 50 disposed on the force-relieving component 40. The lower mold base 11 has a mold cavity 111 at its top, and a stripper plate 13 is disposed in the mold cavity 111 to support the sheet metal product. The force-relieving component 40 is disposed between the demolding cylinder 14 and the stripper plate 13, and is used to transfer the demolding force to the product. The buffer unloading component 40 includes a movable lead screw 43 that can rotate under pressure. The striking component 50 is fixedly mounted on the outer periphery of the movable lead screw 43. The movable lead screw 43 rotates to unload excessive ejection force on the product, and simultaneously drives the striking component 50 to rotate, and evenly and slightly taps and vibrates the bottom periphery of the stripper plate 13. The demolding cylinder 14 pushes the unloading seat 41 to move upward. The unloading component 40 serves the purpose of buffering and unloading force, effectively avoiding damage to the sheet material product caused by excessive ejection force. At the same time, it can prevent the possibility of deformation of the sheet material product during demolding and reduce the product defect rate.

[0064] Please see Figure 4 The bottom of the upper die base 12 is fixedly installed with a fixed bracket 121 for support, and the bottom of the fixed bracket 121 is fixedly assembled on the upper surface of the machine base 10. The upper die base 12 is provided with a stamping assembly 20. The stamping assembly 20 is used to stamp the sheet above the lower die base 11. The stamping assembly 20 facilitates the stamping operation of the sheet, and the fixed bracket 121 facilitates the installation of the upper die base 12 and the stamping assembly 20.

[0065] Please see Figure 4The stamping assembly 20 includes a stamping mechanism 21, which is fixedly mounted inside the upper die base 12. The telescopic end of the stamping mechanism 21 is fixedly connected to a moving die 22. The moving die 22 is fixedly mounted inside a stamping part 23 for stamping sheet metal. The size of the stamping part 23 is consistent with the size of the die cavity 111. The stamping mechanism 21 pushes the moving die 22 downward and the stamping part 23 performs stamping operations on the sheet metal material. The stamped sheet metal product is located in the die cavity 111. After stamping, the stamping mechanism 21 drives the moving die 22 upward to return to its initial position.

[0066] Please see Figures 1 to 3 Two conveying components 30 are fixedly mounted on the upper part of the base 10, and the two conveying components 30 are located on the left and right sides of the lower mold base 11 respectively. The conveying component 30 on the left side of the lower mold base 11 is used for feeding the sheet material, and the conveying component 30 on the right side of the lower mold base 11 is used for unloading the sheet material waste. The sheet material is placed on the conveying component 30 on the left side of the upper mold base 12, which is used to feed the sheet material autonomously, and the conveying component 30 on the right side is used to unload and convey the sheet material waste.

[0067] Please see Figure 3 The conveying assembly 30 includes a conveying base 31, on which a conveying roller 32 is rotatably mounted. A conveying motor 33 is fixedly mounted on the front side of the conveying base 31. The output end of the conveying motor 33 facing the conveying base 31 is fixedly connected to the rotating shaft of the conveying roller 32. A conveying belt 34 is movably arranged on the outer periphery of the conveying roller 32. The conveying motor 33 drives the conveying roller 32 to rotate and the conveying belt 34 is used to convey the board material. The conveying motor 33 is started by external program control, and the output end of the conveying motor 33 drives the conveying roller 32 to rotate, causing the conveying roller 32 to drive the conveying belt 34 to move. The moving conveying belt 34 is used to drive the board material to feed and discharge autonomously, further improving its applicability.

[0068] Please see Figures 8 to 10The unloading assembly 40 includes an unloading seat 41, which has an inner cavity. A threaded sleeve 42 is fixedly installed on the inner wall of the inner cavity, and the threaded sleeve 42 is located on the outer periphery of the movable lead screw 43. The inner side of the threaded sleeve 42 has an internal thread that engages with the movable lead screw 43. The pressure pushed out by the unloading plate 13 pushes the movable lead screw 43 to engage with the threaded sleeve 42 and rotate to unload the force. The upper end of the movable lead screw 43 is rotatably connected to the unloading plate 13 through a rotating ball 45. An elastic support pad 44 is provided between the lower end of the movable lead screw 43 and the bottom of the inner cavity of the unloading seat 41. Bearings 46 are provided at both the upper and lower ends of the rod 43. The upper and lower ends of the movable screw 43 are rotatably connected to the rotating ball 45 and the elastic support pad 44 respectively through the bearings 46. The outer periphery of the unloading seat 41 is slidably installed with a sliding sleeve 411. The outer wall of the sliding sleeve 411 is fixedly connected to the lower mold base 11. The movable screw 43 automatically engages under the action of the threaded sleeve 42, thereby achieving the function of unloading force by engagement. In addition, the movable screw 43 squeezes the elastic support pad 44 during the spiral unloading process, and the elastic force of the elastic support pad 44 further buffers the unloading force.

[0069] Please see Figure 11 The striking assembly 50 includes a mounting sleeve 51, which is fixedly mounted on the outer periphery of the movable lead screw 43. Two crossbars 52 are symmetrically mounted on the outer periphery of the mounting sleeve 51. Each of the two crossbars 52 has a movable groove 521 inside, and a movable block 53 is slidably mounted inside the movable groove 521. Connecting springs 54 are elastically connected between the left and right sides of the movable block 53 and the inner wall of the movable groove 521. A striking connecting rod 55 is fixedly mounted on the upper side of the movable block 53, and the upper end of the striking connecting rod 55 extends to the outside of the crossbar 52 and is fixedly connected to the striking element 551. The crossbar 52 drives the striking connecting rod 55 and the striking element 551 to move along the slide rail 61 of the slide block 60. The striking element 551 continuously contacts the protrusion 62 in the slide rail 61, causing a slight vibration frequency on the unloading plate 13. Under the influence of the vibration frequency, the contact point between the sheet product and the side wall of the mold cavity 111 vibrates and separates, which helps the sheet product to be demolded.

[0070] Please see Figure 11 A stabilizing groove 522 is provided on the side wall of the movable groove 521. A stabilizing slider 531 is fixedly installed on the side of the movable block 53 opposite to the stabilizing groove 522, and the stabilizing slider 531 is located in the stabilizing groove 522. The movable block 53 slides in the movable groove 521, and the stabilizing slider 531 slides in the stabilizing groove 522 at the same time. By sliding the movable block 53 in the movable groove 521 at the same time as the stabilizing slider 531 slides in the stabilizing groove 522, the stability performance of the movable block 53 in the movable groove 521 and the striking part 551 sliding in the slide rail 61 can be improved, thereby further enhancing its practical effect.

[0071] Please see Figure 12 A slide block 60 is fixedly installed at the bottom of the unloading plate 13. The slide block 60 is irregularly ring-shaped. A slide rail 61 is provided at the bottom of the slide block 60. Several protrusions 62 are fixedly installed on the top wall of the slide rail 61. The protrusions 62 are hemispherical. The striking element 551 is located in the slide rail 61. The moving screw 43 rotates to drive the crossbar 52 to rotate synchronously. The striking link 55 drives the striking element 551 to strike the protrusions 62 in the slide rail 61, and causes the slide block 60 and the unloading plate 13 to generate a vibration frequency. By setting the slide block 60 to an irregular ring shape, the vibration position of the unloading plate 13 can be continuously changed, moving back and forth from the inside to the outside and then from the outside to the inside. This can further enhance the demolding effect of the unloading plate 13 on the sheet material.

[0072] A method for demolding molds used in processing lightweight sheet metal that facilitates demolding includes the following steps:

[0073] S1: The sheet material is placed above the conveying assembly 30 on the left side of the machine base 10, and the conveying assembly 30 drives the sheet material to feed autonomously;

[0074] S2: The moving die 22 is pushed down by the stamping mechanism 21, and the stamping part 23 is used to stamp the sheet material;

[0075] S3: The stamped sheet metal product falls into the mold cavity 111, and the stamping mechanism 21 moves the moving mold 22 upward to return to the initial position;

[0076] S4: The piston rod at the top of the demolding cylinder 14 pushes the unloading seat 41 and the unloading plate 13 to move upward, and the unloading plate 13 pushes the formed sheet product to perform demolding operation, so as to realize the autonomous demolding of the sheet product.

[0077] S5: When the sheet material has a large gripping force on the side wall of the mold cavity 111, the force relief component 40 is used to buffer and relieve the force.

[0078] S6: The crossbar 52 drives the striking part 551 to move along the slide rail 61 of the slide block 60, and the striking part 551 and the protrusion 62 in the slide rail 61 come into contact with each other, so that a slight vibration frequency is generated on the unloading plate 13. Under the influence of the vibration frequency, the contact point between the sheet product and the side wall of the mold cavity 111 vibrates and separates, which helps the sheet product to be demolded.

[0079] S7: Demold the stamped product and continue to the next cycle.

[0080] The specific usage and function of this embodiment are as follows:

[0081] Working Principle: In the production of lightweight sheet metal, die stamping is a crucial process. During operation, the sheet metal is placed above the conveyor assembly 30 on the left side of the upper die base 12. An external program controls the start of the conveyor motor 33, which in turn drives the conveyor roller 32 to rotate. This causes the conveyor roller 32 to move the conveyor belt 34, which in turn feeds the sheet metal autonomously. When the sheet metal reaches directly above the lower die base 11, the conveyor assembly 30 stops operating under program control. The stamping mechanism 21 is started, which pushes the moving mold 22 downward and uses the stamping part 23 to stamp the sheet material. The stamped sheet product is located in the mold cavity 111. After stamping, the stamping mechanism 21 drives the moving mold 22 to move upward and return to the initial position, waiting for the next stamping. After the sheet is stamped, the demolding cylinder 14 is started by the program control. The piston rod at the top of the demolding cylinder 14 pushes the unloading seat 41 and the stripper plate 13 upward. The stripper plate 13 pushes the formed sheet product to demold, thereby realizing the autonomous demolding of the sheet product.

[0082] Furthermore, due to the significant gripping force between the sheet metal product and the side wall of the mold cavity 111, the sheet metal product is unloaded by the demolding cylinder 14 pushing the unloading component 40 and the unloading plate 13. At the same time, the sheet metal product is firmly held in place by the contact force between the sheet metal product and the side wall of the mold cavity 111. The demolding cylinder 14 continuously pushes the unloading seat 41 upward by using the piston rod, causing the movable screw 43 to automatically engage under the action of the threaded sleeve 42, thereby achieving the function of engagement unloading. During the spiral unloading process, the movable screw 43 also squeezes the elastic support pad 44. The elastic force of the elastic support pad 44 further buffers the unloading, effectively preventing excessive ejection force from damaging the sheet metal product. It also prevents the possibility of deformation of the sheet metal product during demolding, reducing the product defect rate. Moreover, the bearing 46 ensures that the elastic support pad 44 and the rotating ball 45 are not affected by the rotation of the movable screw 43 during the spiral unloading process, thereby further improving its practicality.

[0083] Furthermore, during the rotation of the movable lead screw 43 to unload force, it simultaneously drives the striking component 50 to rotate. By setting the striking connecting rod 55 and the striking element 551 in the slide rail 61 of the slide block 60, the striking element 551 moves along the slide rail 61 of the slide block 60 while the crossbar 52 drives the striking connecting rod 55 to move. During the movement of the striking element 551, it continuously contacts the protrusion 62 in the slide rail 61, thereby generating a slight vibration frequency on the stripper plate 13. Under the influence of the vibration frequency, the contact point between the sheet product and the side wall of the mold cavity 111 vibrates and separates, which helps the sheet product to be demolded. Moreover, by setting the slide block 60 into an irregular ring shape, the vibration position of the stripper plate 13 can be continuously changed, moving back and forth from the inside to the outside and then from the outside to the inside, which can further enhance the demolding effect of the stripper plate 13 on the sheet product.

[0084] During the sliding process of the striking element 551 in the slide rail 61 of the slide block 60, the moving block 53 slides in the moving groove 521 while the stabilizing slider 531 slides synchronously in the stabilizing groove 522. This improves the stability of the moving block 53 in the moving groove 521 and the striking element 551 in the slide rail 61, thereby enhancing its practical effect.

[0085] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A mold structure for processing lightweight sheet metal that facilitates demolding, comprising a base (10), a lower mold base (11) disposed on the upper side of the base (10), and an upper mold base (12) disposed directly above the lower mold base (11), characterized in that: It also includes a demolding cylinder (14) disposed inside the base (10), a force relief assembly (40) disposed on the top of the demolding cylinder (14), and a striking assembly (50) disposed on the force relief assembly (40). The lower mold base (11) has a mold cavity (111) at the top, and a stripper plate (13) is provided in the mold cavity (111) to support the sheet product. The unloading component (40) is disposed between the demolding cylinder (14) and the stripper plate (13) to buffer and unload the excessive demolding force of the product. The unloading component (40) includes a movable lead screw (43) that can rotate under pressure. The striking component (50) is fixedly assembled on the outer periphery of the movable lead screw (43). The movable lead screw (43) unloads the excessive ejection force of the product by rotating, and simultaneously drives the striking component (50) to rotate, and evenly performs slight tapping vibration on the bottom periphery of the stripper plate (13). The striking assembly (50) includes a mounting sleeve (51), which is fixedly assembled on the outer periphery of the movable lead screw (43). Two crossbars (52) are symmetrically installed on the outer periphery of the mounting sleeve (51). The interior of each of the two crossbars (52) is provided with a movable groove (521), and a movable block (53) is slidably installed inside the movable groove (521). The left and right sides of the movable block (53) are elastically connected to the inner wall of the movable groove (521) by connecting springs (54). The upper side of the movable block (53) is fixedly equipped with a striking link (55), and the upper end of the striking link (55) extends to the outside of the crossbar (52) and is fixedly connected to the striking part (551). The bottom of the unloading plate (13) is fixedly installed with a slide (60), and the slide (60) is in an irregular ring shape. The bottom of the slide (60) is provided with a slide rail (61), and the top wall of the slide rail (61) is fixedly installed with several protrusions (62), and the protrusions (62) are hemispherical. The striking element (551) is located in the slide rail (61). The moving screw (43) rotates to drive the crossbar (52) to rotate synchronously. The striking link (55) drives the striking element (551) to strike the protrusion (62) in the slide rail (61), and causes the slide block (60) and the unloading plate (13) to generate a vibration frequency.

2. The mold structure for processing lightweight sheet metal that facilitates demolding according to claim 1, characterized in that: The unloading assembly (40) includes an unloading seat (41), which has an inner cavity. A threaded sleeve (42) is fixedly installed on the inner wall of the inner cavity. The threaded sleeve (42) is located on the outer periphery of the movable lead screw (43). The inner side of the threaded sleeve (42) is provided with an internal thread that is threaded to engage with the movable lead screw (43). The unloading plate (13) pushes the movable lead screw (43) to rotate and unload force by threading on the threaded sleeve (42) under the pressure. The upper end of the movable screw (43) is rotatably connected to the unloading plate (13) via a rotating ball (45). An elastic support pad (44) is provided between the lower end of the movable screw (43) and the bottom of the cavity inside the unloading seat (41). Bearings (46) are provided at both the upper and lower ends of the movable screw (43). The upper and lower ends of the movable screw (43) are rotatably connected to the rotating ball (45) and the elastic support pad (44) respectively via the bearings (46). Among them, a sliding sleeve (411) is slidably installed on the outer periphery of the unloading seat (41), and the outer wall of the sliding sleeve (411) is fixedly connected to the lower mold seat (11).

3. The mold structure for processing lightweight sheet metal that facilitates demolding according to claim 2, characterized in that: A stabilizing groove (522) is provided on the side wall of the movable groove (521). A stabilizing slider (531) is fixedly installed on the side of the movable block (53) opposite to the stabilizing groove (522). The stabilizing slider (531) is located in the stabilizing groove (522). The movable block (53) slides in the movable groove (521) and simultaneously uses the stabilizing slider (531) to slide in the stabilizing groove (522) for stable sliding.

4. The mold structure for processing lightweight sheet metal that facilitates demolding according to claim 3, characterized in that: The bottom of the upper mold base (12) is fixedly installed with a fixed bracket (121) for support, and the bottom of the fixed bracket (121) is fixedly assembled on the upper surface of the machine base (10). The upper mold base (12) is provided with a stamping assembly (20), and the stamping assembly (20) is used to stamp the plate above the lower mold base (11).

5. The mold structure for processing lightweight sheet metal that facilitates demolding according to claim 4, characterized in that: The stamping assembly (20) includes a stamping mechanism (21), which is fixedly assembled inside the upper die base (12). The telescopic end of the stamping mechanism (21) is fixedly connected to a moving die (22). The moving die (22) is fixedly assembled inside a stamping part (23) for stamping sheet metal, and the size of the stamping part (23) is consistent with the size of the die cavity (111).

6. The mold structure for processing lightweight sheet metal that facilitates demolding according to claim 5, characterized in that: Two conveying components (30) are fixedly mounted on the upper part of the base (10), and the two conveying components (30) are located on the left and right sides of the lower mold base (11), respectively. The conveying component (30) located on the left side of the lower mold base (11) is used for feeding the plate material, and the conveying component (30) located on the right side of the lower mold base (11) is used for unloading the plate material waste.

7. The mold structure for processing lightweight sheet metal that facilitates demolding according to claim 6, characterized in that: The conveying assembly (30) includes a conveying seat (31), on which a conveying roller (32) is rotatably mounted. A conveying motor (33) is fixedly mounted on the front side of the conveying seat (31). The side of the conveying motor (33) facing the conveying seat (31) is fixedly connected to the rotating shaft of the conveying roller (32) via its output end. A conveying belt (34) is movably arranged on the outer periphery of the conveying roller (32). The conveying motor (33) drives the conveying roller (32) to rotate and the conveying belt (34) is used to convey the plate.

8. A method for demolding a mold used in processing lightweight sheet metal that facilitates demolding, applied to the mold structure for processing lightweight sheet metal that facilitates demolding as described in claim 7, characterized in that, Includes the following steps: S1: Place the sheet material on the left side of the machine base above the conveying component, and use the conveying component to drive the sheet material to feed autonomously; S2: The moving die is pushed down by the stamping mechanism, and the stamping parts are used to stamp the sheet material. S3: The stamped sheet metal product falls into the mold cavity, and the stamping mechanism moves the moving mold upward to return to the initial position; S4: The piston rod at the top of the demolding cylinder pushes the unloading seat and the unloading plate to move up, and the unloading plate pushes the formed sheet material product to perform demolding operation, so as to realize the autonomous demolding of the sheet material product; S5: When the gripping force between the sheet material and the mold cavity sidewall is large, the force relief component is used for buffering and force relief. S6: The crossbar drives the striking part to move along the slide rail of the slide block, and the striking part contacts the protrusion in the slide rail to generate a slight vibration frequency on the stripper plate. Under the influence of the vibration frequency, the contact point between the sheet product and the mold cavity side wall vibrates and separates, which helps the sheet product to be demolded. S7: Demold the stamped product and continue to the next cycle.

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