A metal can body stamping integrated device

Abstract

This invention discloses an integrated stamping device for metal can bodies, relating to the field of metal can body stamping technology. It includes a base with an operating cavity. A fixed mold assembly is provided on the top wall of the operating cavity, and a movable mold assembly, including a bottom mold, is provided on the bottom wall of the operating cavity for cooperating with the fixed mold assembly to limit the movement of a metal sheet. This invention utilizes the core connection relationship and working cooperation between the base, the movable mold assembly, and the fixed mold assembly. A second hydraulic cylinder drives the stamping head to cooperate with the stamping cavity to complete the stamping of the metal sheet. Simultaneously, a demolding assembly is provided in the stamping cavity to eject the formed can body. The can body can be automatically ejected immediately after stamping, achieving automatic demolding of the metal can body after stamping. This avoids the situation where the formed can body easily adheres tightly to the stamping cavity of the mold, forming a negative pressure adsorption state, leading to demolding difficulties. Automatic demolding eliminates the need for manual removal, significantly shortening the production cycle and improving automation and production efficiency.

Description

Technical Field

[0001] This invention relates to the field of metal can body stamping technology, and more specifically, to an integrated metal can body stamping device. Background Technology

[0002] With the continuous improvement of science and technology, the materials of containers used to hold items are constantly developing towards convenience and durability. Among them, metal cans have become widely used. Metal cans are metal containers with good airtightness and resistance to internal pressure. Currently, most gift cans and food cans on the market are made of metal. Stamping is a key process to achieve the forming of structures such as necking, edge rolling, and threading of the can body. Metal cans are composed of two parts: the can body and the can lid. However, the existing can bodies still have certain shortcomings in the stamping production process.

[0003] In the current metal can stamping production, metal sheets or blanks are generally placed on a mold for stamping. Under the forming pressure, the formed can is prone to tightly fitting with the stamping cavity of the mold, forming a negative pressure adsorption state. This makes it extremely difficult to manually remove the parts from the mold later. This not only makes the operation cumbersome but also significantly wastes time and affects the overall production efficiency. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides an integrated stamping device for metal can bodies.

[0005] The technical solution is as follows: A metal can body stamping integrated device includes a base, the base having an operating cavity, a fixed mold assembly provided on the top wall of the operating cavity, and a movable mold assembly provided on the bottom wall of the operating cavity for cooperating with the fixed mold assembly to limit the metal plate. The movable mold assembly includes a bottom mold, the bottom of the bottom mold having a downwardly extending extension, the extension having a cavity, a second hydraulic cylinder installed on the bottom wall of the cavity, and a stamping head installed on the telescopic end of the second hydraulic cylinder. The fixed mold assembly includes a top mold, a stamping cavity is provided on the bottom wall of the top mold, a stamping head is used to cooperate with the stamping cavity to stamp the metal sheet, and a demolding assembly is installed on the top wall of the stamping cavity to push out the stamped metal can body.

[0006] This invention utilizes the core connection and working mechanism of the base, moving mold assembly, and fixed mold assembly to drive the stamping head and stamping cavity through a second hydraulic cylinder to complete the stamping of metal sheets. Simultaneously, a demolding component is set in the stamping cavity to eject the formed can body. The can body can be automatically ejected immediately after stamping, achieving automatic demolding of the metal can body after stamping. This avoids the situation where the formed can body is tightly attached to the stamping cavity of the mold, forming a negative pressure adsorption state, which leads to demolding difficulties. Automatic demolding eliminates the need for manual removal of parts, significantly shortens the production cycle, and improves the degree of automation and production efficiency.

[0007] Furthermore, the top of the fixed mold assembly has a protrusion, and an extension cavity communicating with the stamping cavity is opened inside the protrusion. The demolding assembly includes an ejector that is slidably disposed in the extension cavity. A first spring is installed between the top wall of the ejector and the extension cavity. The first spring is used to provide a spring force to keep the ejector pressed downward.

[0008] During stamping, the ejector is pushed upward by the stamping head and the can body, compressing the first spring. After stamping is completed, the first spring rebounds and pushes the ejector downward, pushing the can body out of the stamping cavity, thus achieving mechanical automatic demolding.

[0009] Elastic ejection avoids deformation and scratches to the tank body caused by rigid ejection, protecting the forming quality of the tank body. At the same time, the sliding ejection component has a simple structure, stable and reliable operation, and does not require an additional drive source, reducing equipment energy consumption and failure rate.

[0010] Furthermore, the ejector has an air passage in the middle that communicates with the extension cavity, and an air hole in the top wall of the protrusion that communicates with the extension cavity. A one-way air valve assembly is detachably installed at the air hole.

[0011] Furthermore, the one-way valve assembly includes a mounting base located at the air port, the mounting base having a through hole communicating with the air port, a connector detachably provided on the top of the mounting base, a sliding cavity provided at the bottom of the connector, a sealing disc for sealing the through hole being slidably installed in the sliding cavity, a third spring being installed between the sliding cavity and the top wall of the sealing disc, the third spring being used to provide elastic force to keep the sealing disc pressed downward, and a downwardly extending limiting post being provided on the top wall inside the sliding cavity, the limiting post being used to limit the sealing disc vertically.

[0012] When the stamping head presses the metal sheet upwards, the metal sheet forms a seal with the air inside the stamping chamber as it contacts it. The continuous rise of the stamping head causes the metal sheet to compress the air inside the stamping chamber, which can easily cause the air to impact the outer wall of the metal can, resulting in poor stamping quality. By using a one-way air valve assembly, the air inside the stamping chamber is discharged outwards as the stamping head and metal sheet continue to rise, thus avoiding the problem of air impacting the outer wall of the metal can and causing poor stamping quality.

[0013] When the ejector pushes the tank downwards, the one-way air valve assembly closes to prevent airflow from impacting in the opposite direction and to prevent negative pressure from forming in the stamping chamber, making the tank demolding smoother.

[0014] Furthermore, an inner cavity is provided at the bottom wall of the operating cavity, and the moving mold assembly includes a first hydraulic cylinder located on the inner wall of the inner cavity. An installation plate is installed on the telescopic end of the first hydraulic cylinder, and multiple buffer components are installed between the installation plate and the bottom mold. The buffer components are used to buffer the stamping head and the top mold during stamping.

[0015] The first hydraulic cylinder drives the moving mold assembly to precisely lift and lower, so that the positioning and fixed mold assemblies cooperate to form a limiting clamp on the contour of the metal plate.

[0016] Furthermore, the buffer assembly includes a fixed column located at the bottom mold. The fixed column is detachably provided with a limiting part that movably passes through one end of the mounting plate. A through cavity is formed inside the fixed column, and a through groove communicating with the through cavity is formed on the outer wall of the fixed column. A pressure plate is slidably provided between the outer wall of the fixed column and the through cavity. A second spring is provided between the top wall of the pressure plate and the bottom wall of the bottom mold. The second spring is used to maintain the elastic force that provides the pressure plate to press against the mounting plate.

[0017] Furthermore, a groove is formed on the top wall of the positioning groove, and a circular hole communicating with the cavity is formed on the bottom wall of the groove. A fastener threaded through the circular hole and located at the limiting part is rotatably provided in the groove, and a threaded hole that engages with the fastener is formed on the top wall of the limiting part.

[0018] When the moving mold assembly and the fixed mold assembly are subjected to extrusion pressure during the mold closing process, the second spring can absorb and disperse these extrusion forces, thereby protecting the moving mold assembly and the fixed mold assembly from damage.

[0019] The second spring improves the mold closing accuracy of the moving mold assembly and the fixed mold assembly, and also avoids the reaction force on the first hydraulic cylinder when the moving mold assembly and the fixed mold assembly are pressed together, thus increasing the service life of the first hydraulic cylinder.

[0020] Furthermore, the outer wall of the fixed column has a spline portion, the pressure plate has a spline groove that mates with the spline portion, and a connecting portion that mates with the through cavity and the through groove is formed in the spline groove.

[0021] The above structure ensures a stable connection between the pressure plate and the fixed column. The spline connection has self-locking properties, which can maintain the stability of the connection even when subjected to large impact forces or vibrations, and it is not easy to loosen or fall off.

[0022] Furthermore, the top wall of the bottom mold has multiple positioning grooves, and the bottom wall of the top mold has multiple positioning blocks that cooperate with the multiple positioning grooves.

[0023] By using the positioning slots and positioning blocks in combination, the positioning blocks and positioning slots are engaged during stamping to ensure that the moving mold assembly and the fixed mold assembly are coaxially aligned, preventing the metal sheet from shifting during stamping. Multiple positioning structures improve positioning accuracy, ensuring that the can body's necking, edge rolling and other structures are formed neatly, improving product consistency, reducing mold closing errors and lowering the defect rate.

[0024] This positioning structure allows for quick replacement of molds of different specifications, such as bottom molds of different sizes, without the need to recalibrate the center, thus improving production changeover efficiency. At the same time, multi-point positioning can evenly distribute the clamping force, reduce mold deformation, and improve the consistency of tank body dimensions.

[0025] Furthermore, an installation groove is provided on the top wall of the bottom mold, and a guide groove communicating with the cavity is provided on the bottom wall of the installation groove, which matches the outer wall of the stamping head.

[0026] When the stamping head rises under the drive of the second hydraulic cylinder, the guide groove guides the stamping head to ensure that it enters the stamping chamber vertically, which can reduce the sway of the stamping head and avoid scratching the inner wall of the tank. The mounting groove can circumferentially limit the stamped metal plate to prevent the metal plate from shifting during stamping and affecting the stamping effect. Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of the overall components of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the stamping process of the present invention; Figure 3 This is a three-dimensional cross-sectional view of the present invention before stamping; Figure 4 This is a cross-sectional schematic diagram of the buffer component of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of a portion of point A in the middle; Figure 6 This is a three-dimensional schematic diagram of the pressure plate of the present invention; Figure 7 This is a top-view cross-sectional perspective view of the overall components of the present invention; Figure 8 This is a cross-sectional schematic diagram of the fixed module assembly of the present invention; Figure 9 This is a three-dimensional schematic diagram of the one-way air valve assembly of the present invention; Figure 10 This is a three-dimensional cross-sectional view of the one-way air valve assembly of the present invention.

[0028] The reference numerals in the accompanying drawings of this invention are as follows: 100. Base; 101. Inner cavity; 200. Moving mold assembly; 210. First hydraulic cylinder; 220. Mounting plate; 230. Bottom mold; 231. Positioning groove; 232. Mounting groove; 240. Cavity; 250. Second hydraulic cylinder; 260. Punch head; 300. Fixed mold assembly; 310. Top mold; 311. Punch cavity; 312. Positioning block; 320. Protrusion; 321. Extension cavity; 322. Air hole; 330. Ejector; 331. Air passage; 340. First Spring; 400, buffer assembly; 410, fixed post; 420, spline part; 422, threaded hole; 430, limiting part; 440, second spring; 450, groove; 460, fastener; 470, pressure plate; 471, connecting part; 472, spline groove; 480, through cavity; 500, one-way valve assembly; 510, mounting base; 511, through hole; 520, connector; 521, sliding cavity; 522, limiting post; 530, sealing plate; 540, third spring. Detailed Implementation

[0029] 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.

[0030] The embodiments provided by the present invention will be described in detail below: like Figures 1 to 10 As shown, a metal can body stamping integrated device includes a base 100, the base 100 has an operating cavity, a fixed mold assembly 300 is provided on the top wall of the operating cavity, and a movable mold assembly 200 is provided on the bottom wall of the operating cavity for cooperating with the fixed mold assembly 300 to limit the metal plate. The movable mold assembly 200 includes a bottom mold 230, the bottom of the bottom mold 230 has a downwardly extending extension, a cavity 240 is opened inside the extension, a second hydraulic cylinder 250 is installed on the bottom wall of the cavity 240, and a stamping head 260 is installed on the telescopic end of the second hydraulic cylinder 250. The fixed mold assembly 300 includes a top mold 310, a stamping cavity 311 is provided at the bottom wall of the top mold 310, a stamping head 260 is used to cooperate with the stamping cavity 311 to stamp the metal plate, and a demolding assembly for ejecting the stamped metal can body is installed at the top wall of the stamping cavity 311.

[0031] It should be noted that, through the core connection relationship and working cooperation of the base 100, the moving mold assembly 200, and the fixed mold assembly 300, the present invention drives the stamping head 260 to cooperate with the stamping cavity 311 to complete the stamping of the metal sheet by means of the second hydraulic cylinder 250. At the same time, a demolding component is set in the stamping cavity 311 to eject the formed can body. The can body can be automatically ejected immediately after stamping, realizing automatic demolding of the metal can body after stamping. This avoids the situation where the formed can body is easily tightly attached to the stamping cavity 311 of the mold, forming a negative pressure adsorption state, which leads to demolding difficulties. Automatic demolding without manual removal of parts significantly shortens the production cycle and improves the degree of automation and production efficiency.

[0032] The fixed mold assembly 300 has a protrusion 320 at the top, and an extension cavity 321 communicating with the stamping cavity 311 is opened inside the protrusion 320. The demolding assembly includes an ejector 330 slidably disposed in the extension cavity 321. A first spring 340 is installed between the top wall of the ejector 330 and the extension cavity 321. The first spring 340 is used to provide a spring force to keep the ejector 330 pressed downward.

[0033] It should be noted that during stamping, the ejector 330 is pushed upward by the stamping head 260 and the can body and compresses the first spring 340. After stamping is completed, the first spring 340 rebounds and pushes the ejector 330 downward, pushing the can body out of the stamping cavity 311, thus realizing mechanical automatic demolding.

[0034] Understandably, elastic ejection can avoid deformation and scratches to the tank body caused by rigid ejection, thus protecting the forming quality of the tank body. At the same time, the 330 sliding ejector has a simple structure, stable and reliable operation, and does not require an additional drive source, reducing equipment energy consumption and failure rate.

[0035] The ejector 330 has an air passage 331 in the middle that communicates with the extension cavity 321, and the top wall of the protrusion 320 has an air hole 322 that communicates with the extension cavity 321. A one-way air valve assembly 500 is detachably installed at the air hole 322.

[0036] The one-way valve assembly 500 includes a mounting base 510 located at the air hole 322. The mounting base 510 has a through hole 511 communicating with the air hole 322. A connector 520 is detachably provided on the top of the mounting base 510. A sliding cavity 521 is provided at the bottom of the connector 520. A sealing disc 530 for sealing the through hole 511 is slidably installed in the sliding cavity 521. A third spring 540 is installed between the sliding cavity 521 and the top wall of the sealing disc 530. The third spring 540 is used to provide elastic force to keep the sealing disc 530 pressed downward. A downwardly extending limiting post 522 is provided on the top wall inside the sliding cavity 521. The limiting post 522 is used to limit the sealing disc 530 vertically.

[0037] It should be noted that when the stamping head 260 presses the metal plate upward, the metal plate forms a seal with the stamping cavity 311 when it comes into contact with the air inside the stamping cavity 311 due to the air inside. The continuous rise of the stamping head 260 causes the metal plate to compress the air inside the stamping cavity 311, which can easily cause the air to have a reverse impact on the outer wall of the metal can, resulting in poor stamping quality. By setting the one-way air valve assembly 500, the air inside the stamping cavity 311 is discharged outward with the continuous rise of the stamping head 260 and the metal plate, thus avoiding the problem of air having a reverse impact on the outer wall of the metal can and causing poor stamping quality.

[0038] Understandably, when the ejector 330 pushes the tank downwards, the one-way air valve assembly 500 closes to prevent reverse airflow impact and to prevent negative pressure from forming in the stamping chamber 311, making the tank demolding smoother.

[0039] An inner cavity 101 is provided at the bottom wall of the operating cavity. The moving mold assembly 200 includes a first hydraulic cylinder 210 located on the inner wall of the inner cavity 101. An mounting plate 220 is installed on the telescopic end of the first hydraulic cylinder 210. Multiple buffer assemblies 400 are installed between the mounting plate 220 and the bottom mold 230. The buffer assemblies 400 are used to buffer the stamping when the stamping head 260 and the top mold 310 are stamping.

[0040] It should be noted that the first hydraulic cylinder 210 drives the moving mold assembly 200 to precisely lift and lower, so that the positioning and fixed mold assembly 300 cooperate to form a limiting clamp on the contour of the metal plate.

[0041] The buffer assembly 400 includes a fixing post 410 located at the bottom mold 230. The fixing post 410 is movably connected through the mounting plate 220 and has a detachable limiting part 430 at one end. A through cavity 480 is formed inside the fixing post 410. A through groove communicating with the through cavity 480 is formed on the outer wall of the fixing post 410. A pressure plate 470 is slidably provided between the outer wall of the fixing post 410 and the through cavity 480. A second spring 440 is provided between the top wall of the pressure plate 470 and the bottom wall of the bottom mold 230. The second spring 440 is used to maintain the elastic force that provides the pressure plate 470 to press against the mounting plate 220.

[0042] A groove 450 is formed on the top wall of the positioning groove 231, and a circular hole communicating with the through cavity 480 is formed on the bottom wall of the groove 450. A fastener 460 with a through circular hole threaded on the limiting part 430 is rotatably provided in the groove 450. A threaded hole 422 that is threaded with the fastener 460 is formed on the top wall of the limiting part 430.

[0043] It should be noted that when the moving mold assembly 200 and the fixed mold assembly 300 are subjected to extrusion pressure during the mold closing process, the second spring 440 can absorb and disperse these extrusion pressures, thereby protecting the moving mold assembly 200 and the fixed mold assembly 300 from damage.

[0044] Furthermore, the second spring 440 improves the mold closing accuracy of the moving mold assembly 200 and the fixed mold assembly 300 during mold closing, and also avoids the reaction force generated on the first hydraulic cylinder 210 when the moving mold assembly 200 and the fixed mold assembly 300 are pressed during mold closing, thereby increasing the service life of the first hydraulic cylinder 210.

[0045] The user can easily adjust the preload of the buffer assembly 400 through the threaded engagement of the fastener 460 and the limiting part 430, so that the buffer assembly 400 can adapt to the needs of different stamping dies and different working environments, thus improving the applicability of the device.

[0046] The outer wall of the fixed column 410 has a spline portion 420, and the pressure plate 470 has a spline groove 472 that mates with the spline portion 420. A connecting portion 471 that mates with the through cavity 480 and the through groove is formed at the spline groove 472.

[0047] It should be noted that the above structure ensures a stable connection between the pressure plate 470 and the fixed post 410. The spline part 420 connection has self-locking properties, which can maintain the stability of the connection even when subjected to large impact or vibration, and it is not easy to loosen or fall off.

[0048] The bottom mold 230 has multiple positioning grooves 231 on its top wall, and the top mold 310 has multiple positioning blocks 312 on its bottom wall that cooperate with the multiple positioning grooves 231.

[0049] It should be noted that, through the cooperative arrangement of the positioning groove 231 and the positioning block 312, the positioning block 312 is engaged with the positioning groove 231 during stamping, ensuring that the moving mold assembly 200 and the fixed mold assembly 300 are coaxially aligned, preventing the metal plate from shifting during stamping. The multiple positioning structures improve the positioning accuracy, ensure that the can body's necking, edge rolling and other structures are formed neatly, improve product consistency, reduce mold closing errors, and lower the defect rate.

[0050] Understandably, this positioning structure allows for quick replacement of molds of different specifications, such as replacing bottom molds of different sizes 230, without the need to recalibrate the center, thus improving production changeover efficiency. At the same time, multi-point positioning can evenly distribute the clamping force, reduce mold deformation, and improve the consistency of tank body dimensions.

[0051] An installation groove 232 is provided on the top wall of the bottom mold 230, and a guide groove communicating with the cavity 240 is provided on the bottom wall of the installation groove 232. The guide groove matches the outer wall of the stamping head 260.

[0052] It should be noted that when the stamping head 260 rises under the drive of the second hydraulic cylinder 250, the guide groove guides the stamping head 260 to ensure that it enters the stamping chamber 311 vertically, which can reduce the sway of the stamping head 260 and avoid scratching the inner wall of the tank. The mounting groove can circumferentially limit the stamped metal plate to prevent the metal plate from shifting during stamping and affecting the stamping effect.

[0053] Specifically, during use, the user must first accurately place the metal sheet to be stamped into the pre-set mounting groove 232 on the top wall of the bottom mold 230. During placement, the metal sheet must be flat and flush against the bottom wall of the mounting groove 232 to avoid any offset or tilting, which could lead to irregular can body formation or uneven wall thickness during subsequent stamping. After placement, the user must thoroughly clean the moving mold assembly 200 and the fixed mold assembly 300, focusing on removing impurities and metal debris from the mounting groove 232 of the bottom mold 230, the inner wall of the stamping cavity 311 of the top mold 310, and the surface of the stamping head 260. This prevents impurities from affecting stamping accuracy and from scratching the can body surface or damaging the mold during stamping. After cleaning, lubricant needs to be evenly sprayed onto the surface of the stamping head 260 and the inside of the stamping cavity 311. The lubricant can effectively reduce the friction between the metal plate and the mold during the stamping process, reduce the adhesion and adsorption force between the can body and the stamping cavity 311, and at the same time protect the mold, extend the service life of the mold, and avoid malfunctions such as mold jamming and can body scratches. After the lubrication operation is completed, the first hydraulic cylinder 210 is started through the equipment control system. The telescopic end of the first hydraulic cylinder 210 extends upward, pushing the mounting plate 220 connected to it to move upward smoothly. Since the bottom mold 230 is connected to the mounting plate 220 through the buffer assembly 400, when the mounting plate 220 moves upward, it will simultaneously drive the buffer assembly 400 and the bottom mold 230 on the top of the buffer assembly 400 to move upward together. The entire rising process is smooth and controllable, avoiding the metal plate from shifting due to excessive movement. As the bottom mold 230 continues to rise, until the top wall of the bottom mold 230 is tightly fitted with the bottom wall of the top mold 310 of the fixed mold assembly 300, the metal plate placed in the mounting groove 232 is firmly clamped by the bottom mold 230 and the top mold 310, forming a precise limit, providing a stable positioning basis for subsequent stamping. After the limit is completed, the second hydraulic cylinder 250 is started. The telescopic end of the second hydraulic cylinder 250 slowly extends upward, driving the top of the punch head 260 to move smoothly upward along the guide groove. During the upward movement of the punch head 260, its top will contact the top wall of the metal plate in the mounting groove 232 and apply a uniform upward extrusion force to the metal plate. Under the extrusion force of the punch head 260, the metal plate will gradually extend and form into the punching cavity 311 of the top mold 310. Through the precise cooperation between the punch head 260 and the punching cavity 311, the necking and forming of the metal can body is gradually completed. When the stamping head 260 moves upward to the preset stamping position, the formed metal can body is completely fitted against the inner wall of the stamping cavity 311. Simultaneously, the top of the formed can body continuously presses against the ejector 330, pushing it upward to a position flush with the top wall of the stamping cavity 311. During this process, the first spring 340 at the top of the ejector 330 is synchronously compressed, gradually storing elastic potential energy to prepare for subsequent demolding. After the stamping process is completed, the user controls the first hydraulic cylinder 210 and the second hydraulic cylinder 250 in the cavity 240 to move synchronously in opposite directions via the control system. The telescopic end of the first hydraulic cylinder 210 retracts downward, causing the mounting plate 220, buffer assembly 400, and bottom mold 230 to descend and reset synchronously. The telescopic end of the second hydraulic cylinder 250 retracts downward, causing... The moving stamping head 260 returns to its original position along the guide groove, relieving the pressure on the can body. At this time, the first spring 340, which is in a compressed state, is no longer squeezed by the ejector 330 and begins to release the stored elastic potential energy quickly, generating a downward rebound force that acts on the top wall of the ejector 330, pushing the ejector 330 to slide smoothly downward along the extension cavity 321. During the downward movement of the ejector 330, its bottom is in close contact with the top of the metal can body in the stamping cavity 311, and a uniform downward pushing force is applied, gradually pushing the can body, which was originally stuck to the inner wall of the stamping cavity 311 due to the stamping pressure and formed a negative pressure adsorption state, downward until the stamped metal can body is completely pushed out of the stamping cavity 311. Thus, the stamping and automatic demolding process of the entire metal can body is completed, and the user can directly take away the formed can body. When it is necessary to stamp metal can bodies of different sizes, the user can simply change the bottom die 230 and top die 310 according to the size of the metal plate to be stamped.

[0054] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of this template.

[0055] In the description of this invention, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "multiple" means two or more.

[0056] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0057] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A metal can body stamping integrated device, characterized in that, The system includes a base (100), which has an operating cavity. A fixed mold assembly (300) is provided on the top wall of the operating cavity. A movable mold assembly (200) is provided on the bottom wall of the operating cavity for cooperating with the fixed mold assembly (300) to limit the metal plate. The movable mold assembly (200) includes a bottom mold (230). The bottom of the bottom mold (230) has a downwardly extending extension. A cavity (240) is opened inside the extension. A second hydraulic cylinder (250) is installed on the bottom wall of the cavity (240). A punch head (260) is installed on the telescopic end of the second hydraulic cylinder (250). The fixed mold assembly (300) includes a top mold (310), a stamping cavity (311) is provided on the bottom wall of the top mold (310), a stamping head (260) is used to cooperate with the stamping cavity (311) to stamp the metal plate, and a demolding assembly for ejecting the stamped metal can body is installed on the top wall of the stamping cavity (311).

2. The metal can body stamping integrated device according to claim 1, characterized in that, The fixed mold assembly (300) has a protrusion (320) at the top, and an extension cavity (321) communicating with the stamping cavity (311) is opened inside the protrusion (320). The demolding assembly includes an ejector (330) slidably disposed in the extension cavity (321). A first spring (340) is installed between the top wall of the ejector (330) and the extension cavity (321). The first spring (340) is used to provide a spring force to keep the ejector (330) pressed downward.

3. The metal can body stamping integrated device according to claim 2, characterized in that, The ejector (330) has an air passage (331) in the middle that communicates with the extension cavity (321), and an air hole (322) in the top wall of the protrusion (320) that communicates with the extension cavity (321). A one-way air valve assembly (500) is detachably installed at the air hole (322).

4. The metal can body stamping integrated device according to claim 3, characterized in that, The one-way valve assembly (500) includes a mounting base (510) located at the air hole (322). The mounting base (510) has a through hole (511) communicating with the air hole (322). A connector (520) is detachably provided on the top of the mounting base (510). A sliding cavity (521) is provided at the bottom of the connector (520). A sealing disc (530) for sealing the through hole (511) is slidably installed in the sliding cavity (521). A third spring (540) is installed between the sliding cavity (521) and the top wall of the sealing disc (530). The third spring (540) is used to provide elastic force to keep the sealing disc (530) pressed downward. A downwardly extending limiting post (522) is provided on the top wall inside the sliding cavity (521). The limiting post (522) is used to limit the sealing disc (530) vertically.

5. The metal can body stamping integrated device according to claim 4, characterized in that, An inner cavity (101) is provided at the bottom wall of the operating cavity. The moving mold assembly (200) includes a first hydraulic cylinder (210) located on the inner wall of the inner cavity (101). An installation plate (220) is installed on the telescopic end of the first hydraulic cylinder (210). Multiple buffer assemblies (400) are installed between the installation plate (220) and the bottom mold (230). The buffer assemblies (400) are used to buffer the stamping when the stamping head (260) and the top mold (310) are stamping.

6. The metal can body stamping integrated device according to claim 5, characterized in that, The buffer assembly (400) includes a fixed post (410) located at the bottom mold (230). The fixed post (410) is movably connected through one end of the mounting plate (220) and is detachably provided with a limiting part (430). A through cavity (480) is formed inside the fixed post (410). A through groove communicating with the through cavity (480) is formed on the outer wall of the fixed post (410). A pressure plate (470) is slidably provided between the outer wall of the fixed post (410) and the through cavity (480). A second spring (440) is provided between the top wall of the pressure plate (470) and the bottom wall of the bottom mold (230). The second spring (440) is used to maintain the elastic force that provides the pressure plate (470) to press against the mounting plate (220).

7. The metal can body stamping integrated device according to claim 6, characterized in that, A groove (450) is formed on the top wall of the positioning groove (231), and a circular hole that communicates with the through cavity (480) is formed on the bottom wall of the groove (450). A fastener (460) with a through circular hole threaded on the limiting part (430) is rotatably provided in the groove (450), and a threaded hole (422) that is threaded with the fastener (460) is formed on the top wall of the limiting part (430).

8. The die-casting process for machining thin-walled shell castings according to claim 7, characterized in that: The outer wall of the fixed column (410) has a spline portion (420), and the pressure plate (470) has a spline groove (472) that mates with the spline portion (420). A connecting portion (471) that mates with the through cavity (480) and the through groove is formed at the spline groove (472).

9. The metal can body stamping integrated device according to claim 1, characterized in that, The bottom mold (230) has multiple positioning grooves (231) on its top wall, and the top mold (310) has multiple positioning blocks (312) on its bottom wall that cooperate with the multiple positioning grooves (231).

10. The metal can body stamping integrated device according to claim 1, characterized in that, An installation groove (232) is provided on the top wall of the bottom mold (230), and a guide groove communicating with the cavity (240) is provided on the bottom wall of the installation groove (232). The guide groove matches the outer wall of the stamping head (260).

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