An automated computer chassis enclosure production apparatus

Abstract

The present application belongs to the technical field of shearing plate of computer case shell, and particularly relates to an automatic computer case shell production equipment, which discloses that the production equipment comprises a movable die, a die groove required for bending and forming the computer case shell is arranged on the movable die; a fixed die, a die protrusion matched with the die groove is arranged on the fixed die; side dies are movably arranged on both sides of the fixed die, and the fixed die and the side dies are used to perform secondary bending and forming on the computer case shell after the movable die and the fixed die perform bending and forming on the computer case shell; by optimizing the die structure (such as the movable die, the fixed die and the side dies) and introducing a slider linkage control mechanism (a first slider, a second slider and a third slider), the present application realizes one-time bending and forming of the plate and the flanging. The movable die pushes the second slider, and the first slider and the third slider are driven to move cooperatively through a control loop, so that the synchronous completion of the panel bending, the first flanging bending and the second flanging bending is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of chassis shell shearing, and in particular relates to automated computer chassis shell production equipment. Background Art

[0002] Traditional computer cases are constructed from multiple individual panels. While this meets functional requirements, the production process is complex, costly, and time-consuming, making it difficult to adapt to the trend toward efficient automation. To address these issues, a computer case shell has emerged that utilizes a bending process to form three continuous panels (commonly side panels, front panels, and back panels, or top panels, bottom panels, and back panels). This innovative structure significantly simplifies the manufacturing process and improves production efficiency by reducing the number of individual panels. However, in practice, existing production equipment has the following drawbacks when producing this structure:

[0003] First, during the manufacturing process of a computer case, in addition to the three sheets being individually formed, the flanges must also be bent. This process is crucial for ensuring the stability and aesthetics of the case structure. However, existing production equipment often struggles to achieve simultaneous bending of the sheets and flanges, which not only complicates the production process but can also reduce production efficiency.

[0004] Secondly, traditional secondary bending equipment typically uses an upper mold to press down on a lower mold. However, when producing large components like computer cases, the upper mold's large size requires sufficient stroke length as it presses down to the lower mold to complete the flanging. This long stroke can easily lead to severe scratches on both sides of the case during the forming process, compromising the product's surface quality. Furthermore, this traditional process can also lead to additional issues such as increased mold wear and unstable equipment operation.

[0005] Finally, when the upper and lower molds work closely together to complete the bending process, the workpiece is firmly fixed inside the mold. Especially after the complex flange structure and the inward-concave secondary bend, the gap between the workpiece and the mold is almost completely eliminated. In this case, traditional unloading methods cannot effectively separate the workpiece from the mold, which not only increases the operator's work difficulty, but may also cause scratches or deformation on the workpiece surface due to forced removal, thus affecting product quality. Summary of the Invention

[0006] In view of this, the object of the present invention is to provide an automated computer case shell production device to solve the problems existing in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the first technical solution of the present invention is an automated computer case shell production equipment, which is used for bending and forming the case shell. The production equipment includes a movable mold, which is provided with a mold groove required for bending and forming the case shell; a fixed mold, which has a mold protrusion that is compatible with the mold groove; and a side mold, which is movably arranged on both sides of the fixed mold. After the movable mold and the fixed mold bend and form the case shell, the fixed mold and the side molds perform secondary bending and forming on the case shell.

[0008] Preferably, the bending forming of the chassis shell is divided into panel bending and flange bending, and the flange bending is divided into a first flange bending and a second flange bending; the fixed mold includes a fixed mold base, and the fixed mold base is provided with a first slider and a second slider, the first slider and the side mold are located on the same side of the fixed mold, and the second slider is located on the other side of the fixed mold, the first slider and the movable mold cooperate to complete the panel bending of the chassis shell, and the second slider and the movable mold cooperate to complete the first flange bending of the chassis shell; the fixed mold can switch between a working state and a retracted state; in the working state, the fixed mold base, the first slider and the second slider are in the same plane close to the end face of the movable mold to form the mold protrusion; when switching from the working state to the retracted state, the first slider moves in the direction away from the movable mold, and the second slider moves in the direction close to the movable mold, so as to facilitate the blanking of the chassis shell after bending and forming.

[0009] Furthermore, a third slider is provided on the fixed mold base, and the third slider and the first slider are located on the same side of the fixed mold; the third slider is composed of a horizontal member and a vertical member distributed in a "7" shape, the horizontal member is slidably set on the fixed mold base, and the vertical member is movably set on the first slider; the end surface of the vertical member close to the side mold and the end surface of the first slider close to the side mold are always in the same plane; when switching from the retracted state to the working state, the horizontal member moves toward the intersection direction of the first slider and the second slider; the third slider and the side mold cooperate to complete the second flange bending of the chassis shell.

[0010] Furthermore, the adjacent surfaces of the first slider and the fixed mold are both first inclined surfaces, the adjacent surfaces of the second slider and the fixed mold are both second inclined surfaces, and a transmission guide rail is provided between the third slider and the fixed mold; under the action of the first inclined surface, the second inclined surface and the transmission guide rail, it is ensured that when the fixed mold is switching between the working state and the retracted state, the first slider, the second slider and the third slider can move on the fixed mold base.

[0011] Furthermore, the fixed mold base is provided with a control circuit, and the control circuit is provided with a first piston, a second piston and a third piston, the first piston, the second piston and the third piston are connected to the first slider, the second slider and the third slider in sequence, and a return spring is provided between the second piston and the fixed mold base; when switching to the retracted state, under the action of the return spring, the second slider is moved toward the direction close to the movable mold; when switching from the retracted state to the working state, the movable mold moves toward the fixed mold, and the movable mold pushes the second slider to move toward the fixed mold base, and under the action of the control circuit, the first slider and the third slider move accordingly.

[0012] Furthermore, the movable mold is composed of a movable mold base and a rotating block, the mold groove is located on the movable mold base, the rotating blocks are located on both sides of the mold groove, and the length direction of the rotating block is parallel to the length direction of the first slider; when the movable mold and the fixed mold bend and form the chassis shell, the rotating block rotates as the movable mold and the fixed mold approach each other.

[0013] Furthermore, the side mold is divided into a horizontal side mold and a vertical side mold, the horizontal side mold is used for bending and forming the horizontal flange in the second flange bending, and the vertical side mold is used for bending and forming the vertical flange in the second flange bending; the horizontal side mold and the vertical side mold are both composed of a first linear moving component, a second linear moving component and a side pushing block, the first linear moving component is arranged on the moving end of the second linear moving component, and the side pushing block is arranged on the moving end of the first linear moving component.

[0014] Furthermore, the transmission direction of the first linear movable component and the transmission direction of the second linear movable component on the horizontal side mold and the vertical side mold are arranged vertically, the transmission direction of the second linear movable component on the horizontal side mold is perpendicular to the horizontal plane, and the transmission direction of the second linear movable component on the vertical side mold is parallel to the horizontal plane; the side push block on the horizontal side mold is parallel to the horizontal plane, and the side push block on the vertical side mold is perpendicular to the horizontal plane.

[0015] In order to solve the above technical problems, the second technical solution of the present invention is a method for using the computer case shell production equipment described in the first technical solution, comprising the following steps:

[0016] S1. Place the chassis shell sheet to be processed between the movable die and the fixed die to ensure the accurate position of the sheet; the movable die and the fixed die begin to approach each other and prepare for bending;

[0017] S2, the movable mold pushes the second slider to move toward the fixed mold base, and under the action of the control circuit, the first slider and the third slider move accordingly;

[0018] S3, the movable mold cooperates with the first slider of the fixed mold to complete the panel bending of the chassis shell; the movable mold cooperates with the second slider of the fixed mold to complete the first flange bending of the chassis shell;

[0019] S4. After the movable mold and the fixed mold complete the initial bending, the side mold starts to move; the side molds move from both sides of the fixed mold and cooperate with the fixed mold to perform secondary bending on the chassis shell;

[0020] S5: The horizontal side mold cooperates with the horizontal member of the third slider, and the vertical side mold cooperates with the vertical member of the third slider to complete the second flanging bend of the chassis shell;

[0021] S6. After the bending is completed, as the fixed mold and the movable mold separate, the fixed mold switches from the working state to the retracted state;

[0022] S7, the return spring ensures that the second slider can be accurately reset in the retracted state, and automatically controls the movement of the first slider, the second slider, and the third slider through the first piston, the second piston, and the third piston in the control circuit;

[0023] S8. After the equipment is reset, prepare to process the next chassis shell.

[0024] The technical effects of the present invention are mainly reflected in the following aspects:

[0025] By optimizing the mold structure (e.g., movable mold, fixed mold, and side molds) and introducing a slider linkage control mechanism (first, second, and third sliders), this invention achieves a single-step bending process for both the sheet and the flange. The movable mold pushes the second slider, which, through a control circuit, drives the coordinated movement of the first and third sliders, ensuring simultaneous bending of the panel, the first flange, and the second flange. This design eliminates the multiple bending steps typically associated with traditional equipment, significantly improving production efficiency while avoiding the precision errors and surface damage associated with repeated operations.

[0026] The fixed die switches between an active and closed state through the movement of the first, second, and third sliders. In the active state, the slider end surfaces form a complete mold protrusion, ensuring bending precision. In the closed state, a return spring pushes the second slider back into place, while the first and third sliders move in tandem to create space for workpiece unloading. This design solves the unloading difficulties associated with traditional equipment, avoiding scratches or deformation caused by forced separation during workpiece removal, while also streamlining the process.

[0027] The side molds are divided into horizontal and vertical side molds, respectively used for the horizontal and vertical flanges in the second flange bending process. Both the horizontal and vertical side molds consist of a first linear motion component, a second linear motion component, and a side pusher. The first and second linear motion components are arranged in a vertical direction. This design ensures precise horizontal and vertical movement of the side pusher, improving the accuracy and flexibility of the bending process while accommodating workpieces of varying shapes and sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of a computer case;

[0029] Figure 2 It is a structural diagram of the present invention;

[0030] Figure 3 for Figure 2 Structural diagram of the middle moving mold;

[0031] Figure 4 for Figure 2 Structural diagram of the middle fixed mold;

[0032] Figure 5 for Figure 4 The structural diagram of the third slider;

[0033] Figure 6 for Figure 2 Schematic diagram of the control circuit in the fixed mold;

[0034] Figure 7 for Figure 2 Structural diagram of the middle and side molds;

[0035] In the figure: 11, first panel, 12, second panel, 13, first flange, 14, second flange, 15L, third flange; 2, movable mold, 21, mold groove, 22, movable mold base, 23, rotating block; 3, fixed mold, 31, fixed mold base, 32, first slider, 33, second slider, 34, third slider, 341, horizontal member, 342, vertical member; 35, first inclined surface, 36, second inclined surface, 37, control circuit, 371, first piston, 372, second piston, 373, third piston; 4, side mold, 41, horizontal side mold, 42, vertical side mold, 43, first linear moving component, 44, second linear moving component, 45, side push block. DETAILED DESCRIPTION

[0036] The following is a further detailed description of the specific implementation methods of the present invention in conjunction with the accompanying drawings, so that the technical solutions of the present invention are easier to understand and grasp. In the embodiments, it should be understood that the orientation or positional relationship indicated by the terms "middle", "upper", "lower", "top", "right", "left end", "above", "back", "middle", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, in this specific embodiment, if the connection or fixing method between the components is not particularly specified, the connection or fixing method can be fixed by bolts or pins commonly used in the prior art, or by pin connections, etc. Therefore, it will not be described in detail in this embodiment.

[0037] See also Figure 1 , chassis shell structure description: the chassis shell includes a first panel 11 and a second panel 12, wherein the first panel 11 is provided with a first flange 13, and the second panel 12 is provided with a second flange 14 and a third flange; the bending forming of the chassis shell is divided into panel bending and flange bending, and the flange bending is divided into first flange 13 bending and second flange 14 bending; the first panel 11 and the first flange 13 are formed by bending the first flange 13, and the second panel 12, the second flange 14 and the third flange are formed by bending the second flange 14.

[0038] Example 1

[0039] See also Figure 2 This embodiment provides an automated computer case shell production device, which aims to solve the problems of the existing equipment mentioned in the background art in the production process, such as the difficulty in bending and forming the plate and flange in one go, the scratches caused by long-stroke operation, and the difficulty in separating the workpiece from the mold. The production device is used for bending and forming the case shell, and the production device includes a movable mold 2, on which a mold groove 21 required for bending and forming the case shell is opened; the design of the mold groove 21 takes into account the bending requirements of the first panel 11 and the second panel 12 to ensure one-time forming. The fixed mold 3 has a mold protrusion on the fixed mold 3 that is compatible with the mold groove 21; the shape and size of the mold protrusion are precisely calculated to ensure stability and accuracy during the bending process. The side molds 4 are movably arranged on both sides of the fixed mold 3. After the movable mold 2 and the fixed mold 3 bend and form the case shell, the fixed mold 3 and the side molds 4 perform secondary bending and forming on the case shell (especially for the flange structure).

[0040] See also Figure 4The fixed mold 3 includes a fixed mold base, on which a first slider 32 and a second slider 33 are provided; the fixed mold base is the basic structure of the fixed mold 3, and is used to support and fix the first slider 32 and the second slider 33. The first slider 32 and the side mold 4 are located on the same side of the fixed mold 3, and the second slider 33 is located on the other side of the fixed mold 3. The first slider 32 and the movable mold 2 cooperate to complete the panel bending of the chassis shell (the first panel 11 and the second panel 12), and the second slider 33 and the movable mold 2 cooperate to complete the bending of the first flange 13 of the chassis shell (the first panel 11 and the first flange 13). The fixed mold 3 can switch between a working state and a retracted state. In the working state, the end surface of the fixed mold base, the first slider 32, and the second slider 33 close to the movable mold 2 are in the same plane to form the mold protrusion. When switching from the working state to the retracted state, the first slider 32 moves in a direction away from the movable mold 2, and the second slider 33 moves in a direction close to the movable mold 2, so as to facilitate the blanking of the chassis shell after bending and forming. The movement of the first slider 32 and the second slider 33 enables the fixed mold 3 to switch between the working state and the retracted state. When in operation, the end face of the slider forms a complete mold protrusion, ensuring the accuracy of bending and forming. When in the retracted state, the movement of the slider provides sufficient space for workpiece unloading, solving the problem of difficult unloading in traditional equipment. It not only simplifies the unloading operation, but also avoids scratches or deformation of the workpiece caused by forced separation during the removal process. The first slider 32 cooperates with the movable mold 2 to complete the panel bending, and the second slider 33 cooperates with the movable mold 2 to complete the bending of the first flange 13. This division of labor and cooperation design improves the efficiency of bending and forming while ensuring bending accuracy. The movement of the slider is controlled by a hydraulic or pneumatic system, and the operation is stable and accurate. Through the state switching of the fixed mold 3 and the coordinated work of the slider, the equipment can achieve rapid bending and forming and efficient unloading, significantly shortening the production cycle. The automated unloading mechanism further reduces manual intervention and reduces the difficulty of the operator's work.

[0041] See also Figure 5, a third slider 34 is provided on the fixed mold base, and the third slider 34 and the first slider 32 are located on the same side of the fixed mold 3; the third slider 34 is composed of a horizontal member 341 and a vertical member 342 distributed in a "7" shape, and the horizontal member 341 is slidably provided on the fixed mold base and can move in the horizontal direction; the vertical member 342 is movably provided on the first slider 32 and can adjust its position as the first slider 32 moves. The end face of the vertical member 342 close to the side mold 4 and the end face of the first slider 32 close to the side mold 4 are always in the same plane to ensure the accuracy of bending forming; when switching from the retracted state to the working state, the horizontal member 341 moves toward the intersection direction of the first slider 32 and the second slider 33; the third slider 34 and the side mold 4 cooperate to complete the bending of the second flange 14 of the chassis shell (the second panel 12, the second flange 14 and the third flange). The third slide 34, with its horizontal members 341 and vertical members 342 arranged in a "7" shape, cooperates with the side mold 4 to bend the second flange 14, further simplifying the mold structure. The first slide 32 cooperates with the movable mold 2 to bend the panel, the second slide 33 cooperates with the movable mold 2 to bend the first flange 13, and the third slide 34 cooperates with the side mold 4 to bend the second flange 14. This division of labor and collaborative design improves bending efficiency while ensuring bending accuracy.

[0042] See also Figure 4The adjacent surfaces of the first slider 32 and the fixed mold 3 are both first inclined surfaces 35. The design of the first inclined surface 35 enables the first slider 32 to slide smoothly along the inclined direction during movement, ensuring its stability when switching between the working state and the retracted state. The adjacent surfaces of the second slider 33 and the fixed mold 3 are both second inclined surfaces 36. The design of the second inclined surface 36 enables the second slider 33 to slide smoothly along the inclined direction during movement, ensuring its stability when switching between the working state and the retracted state. A transmission guide rail is provided between the third slider 34 and the fixed mold 3. The design of the transmission guide rail enables the third slider 34 to slide smoothly along the guide rail direction during movement, ensuring its accuracy when switching between the working state and the retracted state. Under the action of the first inclined surface 35, the second inclined surface 36, and the transmission guide rail, the first slider 32, the second slider 33, and the third slider 34 can move on the fixed mold base when the fixed mold 3 switches between the working state and the retracted state. The first inclined surface 35 between the first slider 32 and the fixed mold 3, and the second inclined surface 36 between the second slider 33 and the fixed mold 3, ensure smooth and precise movement of the sliders. The design of the inclined surfaces reduces friction during slider movement, improving efficiency and stability. The transmission guide rails provided between the third slider 34 and the fixed mold 3 ensure precise and stable movement of the third slider 34. The design of the transmission guide rails allows the third slider 34 to move smoothly along a predetermined path, preventing deviation or jamming during movement.

[0043] See also Figure 6 The fixed mold base has a control circuit 37, which includes a first piston 371, a second piston 372, and a third piston 373. The first piston 371, the second piston 372, and the third piston 373 are connected to the first slider 32, the second slider 33, and the third slider 34 in sequence. A return spring is provided between the second piston 372 and the fixed mold base to ensure that the second slider 33 automatically returns to its original position when in the retracted state. When switching to the retracted state, the return spring causes the second slider 33 to move toward the movable mold 2. When switching from the retracted state to the working state, the movable mold 2 moves toward the fixed mold 3, and the movable mold 2 pushes the second slider 33 toward the fixed mold base. Under the action of the control circuit 37, the first slider 32 and the third slider 34 move accordingly. The control circuit 37 provided on the fixed mold base controls the movement of the first slider 32, the second slider 33 and the third slider 34 through the first piston 371, the second piston 372 and the third piston 373 respectively, thereby realizing the linkage control of the sliders; improving the degree of automation of the slider movement, reducing manual intervention and improving production efficiency.

[0044] See also Figure 3The movable mold 2 is composed of a movable mold base and a rotating block 23. The mold groove 21 is located on the movable mold base. The rotating blocks 23 are located on both sides of the mold groove 21. The length direction of the rotating block 23 is parallel to the length direction of the first slider 32. When the movable mold 2 and the fixed mold 3 bend the chassis shell, the rotating block 23 rotates as the movable mold 2 and the fixed mold 3 approach each other, ensuring that the contact between the mold and the workpiece is smoother during the bending process, reducing friction and wear.

[0045] See also Figure 7 , further optimizing the structural design of the side mold 4, the side mold 4 is divided into a horizontal side mold 414 (the second panel 12 and the third flange) and a vertical side mold 424 (the second panel 12 and the second flange 14), the horizontal side mold 414 is used for bending the horizontal flange in the bending of the second flange 14, and the vertical side mold 424 is used for bending the vertical flange in the bending of the second flange 14; the horizontal side mold 414 and the vertical side mold 424 are both composed of a first linear moving component 43, a second linear moving component 44 and a side pushing block 45, the first linear moving component 43 is arranged on the moving end of the second linear moving component 44, and the side pushing block 45 is arranged on the moving end of the first linear moving component 43. The transmission direction of the first linear movable component 43 and the transmission direction of the second linear movable component 44 on the horizontal side mold 414 and the vertical side mold 424 are arranged perpendicularly. The transmission direction of the second linear movable component 44 on the horizontal side mold 414 is perpendicular to the horizontal plane, while the transmission direction of the second linear movable component 44 on the vertical side mold 424 is parallel to the horizontal plane. The side pusher 45 on the horizontal side mold 414 is parallel to the horizontal plane, while the side pusher 45 on the vertical side mold 424 is perpendicular to the horizontal plane. The side mold 4 is divided into a horizontal side mold 414 and a vertical side mold 424, respectively used for bending the horizontal and vertical flanges in the second flange 14. This split design improves the flexibility and precision of the side mold 4, ensuring the quality of the bending. The independent control of the horizontal side mold 414 and the vertical side mold 424 makes the bending process more efficient, reduces pauses and adjustment time during production, and significantly improves production efficiency.

[0046] Example 2

[0047] This embodiment discloses a method for using the computer case shell production equipment described in Example 1. By optimizing the step sequence and control logic, the accuracy and efficiency of the bending process are ensured. The linkage control of the slider and the coordinated action of the side mold 4 improve the flexibility and stability of the bending process. The method includes the following steps:

[0048] S1. Place the chassis shell sheet to be processed between the movable die 2 and the fixed die 3 to ensure the accurate position of the sheet; the movable die 2 and the fixed die 3 begin to approach each other and prepare for bending;

[0049] S2: The movable mold 2 pushes the second slider 33 toward the fixed mold base. Under the action of the control circuit 37, the first slider 32 and the third slider 34 move accordingly.

[0050] S3, the movable mold 2 cooperates with the first slider 32 of the fixed mold 3 to complete the panel bending of the chassis shell; the movable mold 2 cooperates with the second slider 33 of the fixed mold 3 to complete the bending of the first flange 13 of the chassis shell;

[0051] S4, after the movable mold 2 and the fixed mold 3 complete the initial bending, the side mold 4 starts to move; the side mold 4 moves from both sides of the fixed mold 3 and cooperates with the fixed mold 3 to perform secondary bending on the chassis shell;

[0052] S5: The horizontal side mold 414 cooperates with the horizontal member 341 of the third slider 34, and the vertical side mold 424 cooperates with the vertical member 342 of the third slider 34 to complete the bending of the second flange 14 of the chassis shell;

[0053] S6. After the bending is completed, as the fixed mold 3 and the movable mold 2 are separated, the fixed mold 3 switches from the working state to the retracted state;

[0054] S7, the return spring ensures that the second slider 33 can be accurately reset in the retracted state, and automatically controls the movement of the first slider 32, the second slider 33 and the third slider 34 through the first piston 371, the second piston 372 and the third piston 373 in the control circuit 37;

[0055] S8. After the equipment is reset, prepare to process the next chassis shell.

[0056] In addition, as is common knowledge in the industry, the first linear moving component 43 and the second linear moving component 44 mentioned above can be a telescopic rod, a telescopic cylinder, and a slide. The above is common knowledge, so their principles and structures will not be described in detail.

[0057] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. An automated computer case shell production equipment, characterized in that, The production equipment is used for bending and forming the chassis shell, and the production equipment includes: a movable mold, which is provided with a mold groove required for bending and forming the chassis shell; a fixed mold, which is provided with a mold protrusion adapted to the mold groove; and side molds, which are movably arranged on both sides of the fixed mold. After the movable mold and the fixed mold bend and form the chassis shell, the fixed mold and the side molds perform secondary bending and forming on the chassis shell. The bending forming of the chassis shell is divided into panel bending and flanging bending, and the flanging bending is divided into a first flanging bending and a second flanging bending; the fixed die includes a fixed die seat, and the fixed die seat is provided with a first slider and a second slider, the first slider and the side die are located on the same side of the fixed die, and the second slider is located on the other side of the fixed die, the first slider and the movable die cooperate to complete the panel bending of the chassis shell, and the second slider and the movable die cooperate to complete the first flanging bending of the chassis shell; the fixed die can be switched between a working state and a retracted state; in the working state, the end face of the fixed die seat, the first slider and the second slider close to the movable die are in the same plane to form the mold protrusion; when switching from the working state to the retracted state, the first slider moves in a direction away from the movable die, and the second slider moves in a direction close to the movable die, so as to facilitate blanking of the chassis shell after bending and forming; A third slider is provided on the fixed mold base, and the third slider and the first slider are located on the same side of the fixed mold; the third slider is composed of a horizontal member and a vertical member distributed in a "7" shape, the horizontal member is slidably set on the fixed mold base, and the vertical member is movably set on the first slider; the end surface of the vertical member close to the side mold and the end surface of the first slider close to the side mold are always in the same plane; when switching from the retracted state to the working state, the horizontal member moves toward the intersection direction of the first slider and the second slider; the third slider and the side mold cooperate to complete the second flange bending of the chassis shell.

2. The computer case shell production equipment according to claim 1, characterized in that: The adjacent surfaces of the first slider and the fixed mold are both first inclined surfaces, the adjacent surfaces of the second slider and the fixed mold are both second inclined surfaces, and a transmission guide rail is provided between the third slider and the fixed mold; Under the action of the first inclined surface, the second inclined surface and the transmission guide rail, it is ensured that the first slider, the second slider and the third slider can move on the fixed mold base when the fixed mold is switched between the working state and the retracted state.

3. The computer case shell production equipment according to claim 2, characterized in that: The fixed die seat is provided with a control circuit, the control circuit having a first piston, a second piston and a third piston, the first piston, the second piston and the third piston being connected to the first slider, the second slider and the third slider in sequence, and a return spring being provided between the second piston and the fixed die seat; When switching to the retracted state, under the action of the return spring, the second slider moves toward the direction close to the movable mold; when switching from the retracted state to the working state, the movable mold moves toward the fixed mold, and the movable mold pushes the second slider to move toward the fixed mold base. Under the action of the control circuit, the first slider and the third slider move accordingly.

4. The computer case shell production equipment according to claim 3, characterized in that: The movable mold is composed of a movable mold base and a rotating block, the mold groove is located on the movable mold base, the rotating blocks are located on both sides of the mold groove, and the length direction of the rotating blocks is parallel to the length direction of the first sliding block; When the movable die and the fixed die bend and form the chassis shell, the rotating block rotates as the movable die and the fixed die approach each other.

5. The computer case shell production equipment according to claim 4, characterized in that: The side mold is divided into a horizontal side mold and a vertical side mold. The horizontal side mold is used for bending and forming the horizontal flange in the second flange bending, and the vertical side mold is used for bending and forming the vertical flange in the second flange bending; The horizontal side mold and the vertical side mold are both composed of a first linear moving component, a second linear moving component and a side pushing block, the first linear moving component is arranged on the moving end of the second linear moving component, and the side pushing block is arranged on the moving end of the first linear moving component.

6. The computer case shell production equipment according to claim 5, characterized in that: The transmission direction of the first linear movable component and the transmission direction of the second linear movable component on the horizontal side mold and the vertical side mold are arranged perpendicularly, the transmission direction of the second linear movable component on the horizontal side mold is perpendicular to the horizontal plane, and the transmission direction of the second linear movable component on the vertical side mold is parallel to the horizontal plane; The side push blocks on the horizontal side mold are parallel to the horizontal plane, and the side push blocks on the vertical side mold are perpendicular to the horizontal plane.

7. A method for using the computer case shell production equipment according to claim 6, characterized in that: The following steps are involved: S1. Place the chassis shell sheet to be processed between the movable die and the fixed die to ensure the accurate position of the sheet; the movable die and the fixed die begin to approach each other and prepare for bending; S2, the movable mold pushes the second slider to move toward the fixed mold base, and under the action of the control circuit, the first slider and the third slider move accordingly; S3, the movable mold cooperates with the first slider of the fixed mold to complete the panel bending of the chassis shell; the movable mold cooperates with the second slider of the fixed mold to complete the first flange bending of the chassis shell; S4. After the movable mold and the fixed mold complete the initial bending, the side mold starts to move; the side molds move from both sides of the fixed mold and cooperate with the fixed mold to perform secondary bending on the chassis shell; S5: The horizontal side mold cooperates with the horizontal member of the third slider, and the vertical side mold cooperates with the vertical member of the third slider to complete the second flanging bend of the chassis shell; S6. After the bending is completed, as the fixed mold and the movable mold separate, the fixed mold switches from the working state to the retracted state; S7, the return spring ensures that the second slider can be accurately reset in the retracted state, and automatically controls the movement of the first slider, the second slider, and the third slider through the first piston, the second piston, and the third piston in the control circuit; S8. After the equipment is reset, prepare to process the next chassis shell.

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