A metal shell integrated forming die

Abstract

The present application relates to punch bending technical field, specifically to a kind of metal shell integrated forming die, including upper die and lower die, wherein upper die includes upper die seat, control block is set on upper die seat, control block can be elastically slid along vertical direction relative to upper die seat;Multiple first bending blocks one and first bending blocks two are alternatively set on control block along circumferential direction, and can be slid along vertical direction and radial direction relative to control block, and are used to carry out first bending to metal sheet;Multiple telescopic rods are also set on upper die seat along circumferential direction;Lower die includes lower die seat, and receiving part is set on lower die seat, and receiving part can be elastically slid along vertical direction;Multiple secondary bending blocks are also set on the top of lower die seat along circumferential direction, and secondary bending block is used to carry out secondary bending to metal sheet;The sliding end of telescopic rod is slidably inserted in secondary bending block, and is used to control the sliding timing of secondary bending block. To avoid the situation of jamming, ensure the normal operation of bending work.

Description

An integrated molding die for a metal shell Technical Field

[0001] This invention relates to the field of stamping and bending technology, and in particular to an integrated forming mold for metal housings. Background Technology

[0002] In the metal shell manufacturing process, drilling and bending are the core steps in achieving structural forming. Among them, the bending process involves applying external force that meets the process requirements to the metal sheet, causing the metal sheet to exceed the elastic deformation limit and enter the plastic deformation stage, ultimately forming a specific bending angle and three-dimensional shape according to the design requirements. This is a key step in shaping the three-dimensional structure of the metal shell.

[0003] When bending metal sheets, bending equipment is required. Related technologies, such as Chinese patent application CN118616533A, disclose sheet metal bending equipment. This equipment includes an upper module, which comprises a control block, a first moving block, and a second moving block. During bending, the control block, the first moving block, and the second moving block cooperate to form a frustum structure, facilitating the upper module to perform sheet metal bending operations. After bending, the control block moves upward, and both the first and second moving blocks slide relative to the control block to retract inward, allowing the upper module to quickly detach from the metal casing.

[0004] However, when there are debris on the sliding contact surface between the first moving block and / or the second moving block and the control block, the first moving block and / or the second moving block and the control block are prone to jamming, making it impossible to slide relative to each other. This affects both the reset of the first moving block and / or the second moving block and the disassembly of the workpiece after molding. Summary of the Invention

[0005] Therefore, it is necessary to provide an integrated metal shell forming mold to address the problem that the first moving block and / or the second moving block and the control block are prone to jamming during the use of current sheet metal bending equipment.

[0006] The above objectives are achieved through the following technical solutions:

[0007] An integrated metal shell molding die includes an upper die and a lower die, which are arranged vertically, with the upper die located above the lower die.

[0008] The upper die includes an upper die base that can slide vertically; a control block is provided at the bottom of the upper die base that can slide elastically relative to the upper die base in the vertical direction; multiple first-bending blocks and multiple second-bending blocks are provided on the control block, which are arranged alternately around the circumference of the control block and can slide relative to the control block in both the vertical and radial directions, and are configured to perform a single-bending of the metal sheet; multiple telescopic rods are also provided on the upper die base, which are arranged around the circumference of the control block and can extend and retract vertically.

[0009] The lower die includes a lower die base, and a receiving part is provided on the top of the lower die base. The receiving part can slide elastically in the vertical direction. The metal sheet is located on the top of the receiving part when bending. The top of the lower die base is also provided with multiple secondary bending blocks. The multiple secondary bending blocks are arranged circumferentially along the receiving part. The secondary bending blocks can slide in the radial direction of the receiving part and are configured to perform secondary bending on the metal sheet. Both primary bending block one and primary bending block two can form a snap-fit ​​engagement with the metal sheet after secondary bending. The sliding end of the telescopic rod is slidably inserted into the secondary bending block and is configured to control the sliding timing of the secondary bending block.

[0010] Furthermore, each secondary bending block is hinged with a bending plate, and the secondary bending block is configured to perform secondary bending on the metal sheet through the bending plate; each telescopic rod has a stop on its sliding end, and the stop can form a stop with the bending plate; the integrated metal shell forming mold also includes an adjustment component, which is configured to adjust the bending angle of the bending plate on the metal sheet next according to the springback of the secondary bending edge of the metal sheet, and the greater the springback, the greater the next bending angle.

[0011] Furthermore, the adjustment assembly includes an adjustment plate and a guide plate. Each bending plate is equipped with an adjustment plate, which can rotate synchronously with the bending plate and also form a unidirectional engagement with the bending plate. The adjustment plate has an inclined surface, which can form a sliding stop engagement with the stop frame. Each secondary bending block is equipped with a guide plate, which can slide elastically in the vertical direction and form a friction engagement with the adjustment plate.

[0012] Furthermore, each secondary bending block and the guide plate is connected by an elastic element, which causes the guide plate to tend to move downward under the action of the elastic element.

[0013] Furthermore, the elastic element is a compression spring.

[0014] Furthermore, an elastic element two connects the receiving part and the lower mold base. Under the action of the elastic element two, the receiving part has a tendency to move upward.

[0015] Furthermore, the second elastic element is a compression spring.

[0016] Furthermore, the upper mold base has a sliding plate, and multiple guide pillars are provided at the bottom of the sliding plate. A mounting plate is slidably sleeved on all the guide pillars, and the mounting plate can form a stop fit with the guide pillars. An elastic element three is connected between the sliding plate and the mounting plate. Under the action of the elastic element three, the mounting plate has a downward tendency. The control block is fixedly set at the bottom of the mounting plate.

[0017] Furthermore, the integrated metal housing mold also includes a drive component configured to provide a driving force for sliding the upper mold base.

[0018] Furthermore, the driving component is a hydraulic cylinder, and the output shaft of the hydraulic cylinder is located on the top of the upper mold base.

[0019] The beneficial effects of this invention are:

[0020] This invention relates to an integrated metal shell forming mold. By setting a primary bending block 1, a primary bending block 2, a control block, a secondary bending block, and a telescopic rod, it can achieve secondary bending of the metal sheet and delay the reset of the secondary bending block through the telescopic rod. Furthermore, utilizing the interlocking characteristics of the primary bending blocks 1 and 2 with the secondary bent metal sheet, during the upward movement of the control block, under the pressure of the secondary bending block, the secondary bent metal sheet, primary bending blocks 1 and 2 remain stationary in the vertical direction. This achieves bending and pressure holding of the metal sheet, which is beneficial for improving bending quality. Simultaneously, the inward movement of primary bending blocks 1 and 2 relative to the control block achieves automatic unloading while avoiding jamming, ensuring the normal operation of the bending process.

[0021] Furthermore, by setting up a bending plate, a stop, and an adjustment component, and utilizing the adjustment characteristics of the adjustment component, the bending angle of the bending plate on the metal sheet can be adjusted according to the springback of the secondary bending edge of the metal sheet. The greater the springback, the greater the bending angle of the next bending, thereby ensuring that the bending angle of the secondary bending edge of the next metal sheet is close to the design value, thus ensuring the bending quality. Attached Figure Description

[0022] Figure 1 is a three-dimensional structural schematic diagram of the integrated metal shell molding die provided in an embodiment of the present invention;

[0023] Figure 2 is an exploded view of the parts of the integrated metal shell molding die provided in an embodiment of the present invention;

[0024] Figure 3 is a front view of the integrated metal shell molding die provided in an embodiment of the present invention;

[0025] Figure 4 is a cross-sectional view along direction AA in Figure 3;

[0026] Figure 5 is a cross-sectional view of the integrated metal shell molding die provided in an embodiment of the present invention.

[0027] Figure 6 is a cross-sectional view of the integrated metal shell molding die provided in an embodiment of the present invention.

[0028] Figure 7 is a cross-sectional view of the integrated metal shell molding die provided in an embodiment of the present invention.

[0029] Figure 8 is a cross-sectional view of the integrated metal shell molding die provided in an embodiment of the present invention.

[0030] Figure 9 is a cross-sectional view of the integrated metal shell molding die provided in an embodiment of the present invention.

[0031] Figure 10 is a magnified schematic diagram of the structure at point Z in Figure 9.

[0032] in:

[0033] 1. Upper mold; 101. Upper mold base; 1011. Sliding plate; 1012. Guide post; 10121. Stop; 1013. Mounting plate; 1014. Compression spring three; 102. Control block; 1021. Slide groove one; 1022. Slide bar; 103. First bending block one; 1031. Bending bar one; 104. First bending block two; 1041. Bending bar two; 105. Telescopic rod; 1051. Slide post; 1052. Stop;

[0034] 2. Lower die; 201. Lower die base; 2011. Ring protrusion; 202. Receiving part; 203. Secondary bending block; 2031. Slide groove two; 2032. Slide groove three; 204. Bending plate;

[0035] 3. Adjustment components; 301. Adjustment plate; 3011. Inclined surface one; 302. Guide plate; 303. Compression spring one;

[0036] 4. Metal sheet. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0038] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage," unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] When existing bending equipment bends metal sheet 4, the contact surfaces between the first and second moving blocks and the control block 102 are prone to contamination with debris. These debris may originate from scraps generated during the bending process or wear particles produced during long-term operation of the equipment. When debris exists between the contact surfaces, it significantly affects the relative sliding of the components: on the one hand, debris fills the gaps between the contact surfaces, disrupting the original smooth sliding fit and causing additional friction and resistance during sliding; on the other hand, if the debris is hard or large, it may even embed itself in the microscopic depressions of the contact surfaces, forming jamming points. When the force of this resistance or jamming point exceeds the driving force of the equipment's drive components, the first and / or second moving blocks will jam, preventing relative sliding according to the preset program.

[0041] This jamming phenomenon directly causes two problems: First, it seriously affects the reset of the first and second moving blocks: if the components cannot retract and reset smoothly, the upper module will not be able to return to its initial working state. This will not only prevent subsequent bending operations from being carried out normally, but may also exacerbate equipment wear and shorten its service life due to the components being in an abnormal stress state for a long time. Second, it hinders the disassembly of the formed workpiece: if the module cannot retract, the contact pressure between it and the workpiece cannot be eliminated, and the workpiece will be firmly stuck between the modules. Forced disassembly will not only increase labor costs, but may also cause workpiece deformation, surface damage, or even further damage to equipment components, seriously affecting production efficiency and product qualification rate.

[0042] Based on this, the present invention provides an integrated metal shell molding die, which is particularly suitable for bending metal sheet 4. The base shape of metal sheet 4 is rectangular, and bending edges are provided on the four side walls of metal sheet 4. The bending edges are strip-shaped structures, parallel to the rectangular side of the metal sheet 4, and are plate-shaped structures, with the plate surface overlapping the plate surface of metal sheet 4.

[0043] Specifically, referring to Figures 1 to 10, the integrated metal shell molding die provided in this embodiment of the invention is configured to include an upper die 1 and a lower die 2, the upper die 1 and the lower die 2 are arranged in a vertical direction, and the upper die 1 is located above the lower die 2.

[0044] The upper mold 1 includes an upper mold base 101, which can slide vertically. The upper mold base 101 has a sliding plate 1011, which is rectangular in shape and horizontally positioned. Four guide posts 1012 are vertically positioned at the bottom of the sliding plate 1011, located at the four corners of the sliding plate 1011. A mounting plate 1013 is slidably fitted onto all the guide posts 1012, with a horizontally positioned surface. Each guide post 1012 has a stop 10121 on its side wall near the bottom, which engages with the mounting plate 1013 to restrict movement. The mounting plate 1013 is at its lower limit position when sliding along the guide post 1012; the stop 10121 can be configured as a ring structure and sleeved on the guide post 1012; an elastic element three is connected between the sliding plate 1011 and the mounting plate 1013, and the elastic element three can be configured as a compression spring three 1014. Each guide post 1012 is sleeved with a compression spring three 1014, so that the guide post 1012 can provide axial support for the compression spring three 1014. Under the action of the compression spring three 1014, the mounting plate 1013 can slide elastically in the vertical direction and has a downward tendency. Four telescopic rods 105 are also vertically arranged at the bottom of the sliding plate 1011. The telescopic rods 105 and the guide post 1012 are arranged alternately in the circumferential direction. The sliding end of the telescopic rod 105 is at the bottom and penetrates the mounting plate 1013 downward. The telescopic rods 105 can extend and retract in the vertical direction and are arranged in the circumferential direction corresponding to the first bending block one 103.

[0045] A control block 102 is fixedly installed at the bottom center of the mounting plate 1013. Under the action of the compression spring 1014, the control block 102 can slide elastically in the vertical direction relative to the upper mold base 101 and has a downward tendency. The base of the control block 102 is a truncated quadrangular structure, which is larger at the top and smaller at the bottom. Each edge of the control block 102 is provided with a groove 1021. The slope of the bottom of the groove 1021 is equal to the slope of the control block 102. The two side walls of the groove 1021 are V-shaped structures, with the larger opening facing outward. A slider 1022 is arranged parallel to the bottom of each groove 1021. A slider 1022 is arranged parallel to each side wall of the control block 102. The cross-sectional shape of the slider 1022 is T-shaped, with the vertical section facing inward. Each slide bar 1022 at each slide groove 1021 is slidably fitted with a first bending block 103, so that the first bending block 103 can slide relative to the control block 102 in the vertical direction upward and radial direction outward or in the vertical direction downward and radial direction inward. Each slide bar 1022 on each side wall of the control block 102 is slidably fitted with a second bending block 104, so that the second bending block 104 can slide relative to the control block 102 in the vertical direction upward and radial direction outward or in the vertical direction downward and radial direction inward. The layout of the slide bars 1022 is such that the first bending block 103 and the second bending block 104 are alternately arranged along the circumference of the control block 102, and the first bending block 103 is set further inward than the second bending block 104.

[0046] Each primary bending block 103 has a bending strip 1031 on its bottom sidewall. The bending strip 1031 extends horizontally and has vertical sidewalls. The two opposite sidewalls have a V-shaped structure with the larger opening facing inward. Each primary bending block 104 has a bending strip 1041 on its bottom sidewall. The bending strip 1041 extends horizontally and has vertical sidewalls. The two opposite sidewalls have a V-shaped structure with the larger opening facing inward. The bending strips 1031 and 1041 on the same side are arranged in parallel. When the primary bending block 103, primary bending block 104, and control block 102 are at the same height, the bottom of the bending strip 1031, the bottom of the bending strip 1041, the bottom of the primary bending block 103, the bottom of the primary bending block 104, and the bottom of the control block 102 form a rectangular shape, which facilitates the primary bending of the bending edge.

[0047] To facilitate the provision of driving force for the sliding of the upper mold base 101, the integrated metal shell molding die is configured to also include a driving component, which can be configured as a hydraulic cylinder. The hydraulic cylinder is located above the upper mold base 101, and its output shaft faces downward and is vertically fixed to the top of the sliding plate 1011, so as to facilitate the upper mold base 101 to slide in the vertical direction.

[0048] The lower mold 2 includes a lower mold base 201, which is a plate-shaped structure with a horizontally arranged surface. A ring protrusion 2011 is provided on the top of the lower mold base 201, surrounding a square space. A receiving part 202 is inserted into this square space. The receiving part 202 is also a plate-shaped structure with a horizontally arranged surface, and its square sides are parallel to the rectangular sides of the metal sheet 4. An elastic element 2 connects the receiving part 202 and the lower mold base 201. The elastic element 2 can be configured as a compression spring 2, which is vertically arranged. Under the action of the compression spring 2, the receiving part 202 can elastically slide in the vertical direction and has an upward tendency. When the plate 4 is bent, it is located at the top of the receiving part 202, and the bottom plate surface and the top plate surface of the receiving part 202 coincide. The top of the annular protrusion 2011 is also provided with four secondary bending blocks 203. The four secondary bending blocks 203 are arranged around the circumference of the receiving part 202 and are correspondingly arranged around the circumference of the telescopic rod 105. They can slide along the four sides of the metal plate 4. The secondary bending blocks 203 are configured to perform secondary bending on the bent edge. After the secondary bending, a groove structure is formed between the bent edge and the metal plate 4. The bending strip 1031 and the bending strip 2041 can be inserted into the groove structure to form a snap-fit ​​fit.

[0049] Each secondary bending block 203 has a second sliding groove 2031 at its top. The second sliding groove 2031 is perpendicular to the rectangular side of the metal plate 4 and is inclined from the outside to the inside and from bottom to top. The bottom end of the sliding end of the telescopic rod 105 is slidably inserted into the second sliding groove 2031. Each second sliding groove 2031 has a corresponding third sliding groove 2032 on its two sidewalls. The third sliding groove 2032 is parallel to the second sliding groove 2031. Each telescopic rod 105 has two sliding columns 1051 on its bottom sidewall. The two sliding columns 1051 on the same telescopic rod 105 are slidably inserted into the two third sliding grooves 2032 on the same second sliding groove 2031, which facilitates control of the sliding timing of the secondary bending block 203.

[0050] Initially, as shown in Figures 3 and 4, the mounting plate 1013 and the stop 10121 form a stop fit and are located at the lower limit position on the guide post 1012; the first bending block 103 and the second bending block 104 are at the same height and are both located at the lower limit position on the control block 102; the second bending block 203 is away from the metal plate 4; the sliding end of the telescopic rod 105 is located at the inner end of the slide groove 2032.

[0051] During use, the metal sheet 4 is first placed on top of the receiving part 202 with its surfaces overlapping, ensuring that the bent edge and the secondary bending block 203 are correspondingly set along the circumference. Then, the hydraulic cylinder is activated, and the output shaft of the hydraulic cylinder extends, synchronously driving the sliding plate 1011 to move downward. When the sliding plate 1011 moves, it simultaneously drives the fixed end of the telescopic rod 105 to move downward, shortening the telescopic rod 105. It also synchronously drives the mounting plate 1013, control block 102, first bending block 103, and second bending block 104 to move downward through the guide post 1012, compression spring 3 1014, and stop 10121, until the bottom of the first bending block 103 and the second bending block 104 contact the metal sheet 4. At this time, the first bending block 103 and the second bending block 104 remain stationary under the support of the receiving part 202 and the metal sheet 4.

[0052] As the sliding plate 1011 continues to move downward, the mounting plate 1013 and the control block 102 move downward synchronously. The first bending block 103 and the second bending block 104 move upward and outward relative to the control block 102 until the bottom of the control block 102 contacts the metal plate 4. When the bottom of the control block 102 contacts the metal plate 4, as shown in Figure 5, the first bending block 103 and the second bending block 104 are both located at their upper limit positions on the control block 102 and form a stop with the mounting plate 1013. The bottoms of the first bending strip 1031, the second bending strip 1041, the first bending block 103, the second bending block 104, and the control block 102 form a rectangular shape, preparing for the first bending. The telescopic rod 105 will be shortened to its shortest length. The mounting plate 1013 and the stop 10121 are spaced apart, and the compression spring 1014 is further compressed.

[0053] As the sliding plate 1011 continues to move downward, it continues to compress the compression spring 1014. The compression spring 1014 pushes the mounting plate 1013, control block 102, first bending block 103, and second bending block 104 downward. The control block 102, first bending block 103, and second bending block 104 simultaneously press down on the receiving part 202 and the metal plate 4, pressing the receiving part 202 and the metal plate 4 into the annular protrusion 2011. Under the constraint of the inner wall of the annular protrusion 2011, as shown in Figure 6, the bending edge is bent once, and the compression spring 2 is compressed. On the other hand, it drives the telescopic rod 105 to shorten to its shortest length, and then drives the telescopic rod 105 to move downward. The telescopic rod 105 simultaneously drives the secondary bending block 203 to move inward through the sliding cooperation between the sliding column 1051 and the sliding groove 2032, as shown in Figure 7. After the bending edge is bent once, it is bent twice.

[0054] After the second bending of the bent edge is completed, a groove-like structure is formed between the bent edge and the metal plate 4. Bending strip 1031 and bending strip 2 1041 are inserted into this groove-like structure and form a snap-fit ​​fit. The output shaft of the hydraulic cylinder retracts, synchronously driving the sliding plate 1011 to move upward. The sliding plate 1011 drives the fixed end of the telescopic rod 105 to move upward, and the compression spring 3 1014 is released. Compression spring 2 is released at the same time, driving the receiving part 202, the metal plate 4, the control block 102, the first bending block 103 and the second bending block 2 104 to move upward until the mounting plate 1013 and the stop 10121 stop.

[0055] As the sliding plate 1011 continues to move upward, it simultaneously drives the mounting plate 1013 and the control block 102 to move upward. Under the constraint of the secondary bending block 203, the metal plate 4 remains stationary. Through the interlocking cooperation between the groove structure and the bending strip 1031 and bending strip 2041, the primary bending block 103 and primary bending block 204 remain stationary. This achieves bending and pressure holding of the metal plate 4, which is beneficial to improving the bending quality. At the same time, it forces the primary bending block 103 and primary bending block 204 to move downward and inward relative to the control block 102 to avoid jamming, until the bending strip 1031 and bending strip 2041 disengage from the groove structure. At this time, the telescopic rod 105 extends to its maximum length.

[0056] As the sliding plate 1011 continues to move upward, it simultaneously drives the mounting plate 1013, control block 102, first bending block 103 and second bending block 104 to move upward, and simultaneously drives the telescopic rod 105 to move upward. The telescopic rod 105 simultaneously drives the second bending block 203 to move outward through the sliding cooperation between the sliding column 1051 and the sliding groove 2032, so that the second bending block 203 is separated from the metal plate 4, and the material is removed.

[0057] It should be noted that, in order to ensure that the telescopic rod 105 does not slide along the slide groove 2032 when it is freely extending and retracting, the maximum static friction between the secondary bending block 203 and the annular protrusion 2011 is set to be greater than the sliding friction between the fixed end and the sliding end of the telescopic rod 105. This ensures that the telescopic rod 105 will not slide along the slide groove 2032 before it is at its shortest and longest positions. This ensures that the secondary bending block 203 bends the metal plate 4 after the primary bending block 103 and the primary bending block 204, and also ensures the delayed reset of the secondary bending block 203.

[0058] In a further embodiment, to reduce the impact of springback on the bending quality of the metal sheet 4 caused by the secondary bending edge, a bending plate 204 is hinged to the inner wall of each secondary bending block 203. The bending plate 204 is a strip structure and is arranged parallel to the rectangular side of the metal sheet 4. The hinged connection between the bending plate 204 and the secondary bending block 203 allows the inner side of the bending plate 204 to rotate around the outer side. Initially, the bending plate 204 is in a horizontal state, ensuring that the metal sheet 4 can be bent twice through the bending plate 204 during the inward movement of the secondary bending block 203. Each telescopic rod 105 has a vertically installed stop 1052 on the inner wall of its sliding end. The stop 1052 has a hook-shaped structure with the hook end facing inward and downward. The stop 1052 can form a stop with the bending plate 204 to limit the rotation of the bending plate 204 when the bent edge springs back, so that the bending plate 204 can remain horizontal, thereby enabling continuous bending of the bent edge. The integrated metal shell molding die also includes an adjustment component 3. The adjustment component 3 is configured to adjust the bending angle of the bending plate 204 on the metal plate 4 next time according to the springback amount of the secondary bending edge of the metal plate 4. The greater the springback amount, the greater the next bending angle.

[0059] Thus, when the springback is greater, the bending angle of the bending plate 204 on the metal sheet 4 will be greater by adjusting the bending component 3, so that the bending angle of the second bending edge of the next metal sheet 4 can be closer to the design value after springback, thereby ensuring the bending quality.

[0060] Specifically, the adjusting component 3 is configured to include an adjusting plate 301 and a guide plate 302. Each bending plate 204 has an adjusting plate 301 overlapping its top. The adjusting plate 301 is a strip structure and is parallel to the bending plate 204. Rackets are provided on the contact surfaces of the bending plate 204 and the adjusting plate 301. Under the action of the ratchet, the adjusting plate 301 can only move inward relative to the bending plate 204 in one direction. The top of the adjusting plate 301 is a slope 3011, which slopes downward from the outside to the inside. The slope 3011 can form a sliding stop with the stop 1052. After the adjusting plate 301 slides inward, the contact point of the stop 1052 on the slope 3011 moves upward. Under the pushing force of the stop 1052, the adjusting plate 301 drives the bending plate 204 to rotate downward to a larger angle, thereby ensuring the bending... The larger the bending angle of plate 204 to metal sheet 4, the more inclined the top of bending strip 1031 and bending strip 2041 are. The inclined direction is approximately the same as that of inclined surface 3011, ensuring that bending plate 204 has sufficient rotational margin and avoiding interference. Each secondary bending block 203 is provided with a guide plate 302. The guide plate 302 is a strip structure, parallel to the rectangular side of metal sheet 4, and vertically set on the plate surface. Each guide plate 302 is connected to the top of the secondary bending block 203 with an elastic element. The elastic element can be set as a compression spring 303. The compression spring 303 is vertically set. Under the action of the compression spring 303, the guide plate 302 can slide elastically in the vertical direction and has a downward tendency. The bottom of the guide plate 302 and the top of the adjusting plate 301 form a friction fit.

[0061] As shown in Figure 10, when the bent edge springs back, the bent edge drives the bending plate 204 to rotate clockwise. When the bending plate 204 rotates, it simultaneously drives the adjusting plate 301 to rotate clockwise. When the adjusting plate 301 rotates, it slides relative to the guide plate 302, causing the guide plate 302 to retract into the secondary bending block 203, and simultaneously compressing the compression spring 303. When the guide plate 302 moves, it simultaneously rubs the adjusting plate 301 inward through frictional engagement with the adjusting plate 301, causing the stop 1052 to contact the inclined surface 3011. The greater the rebound of the bent edge, the greater the upward movement of the contact point of the stop 1052 on the inclined plane 3011. This allows the adjusting plate 301 to drive the bending plate 204 to rotate downward to a larger angle when the stop 1052 contacts the inclined plane 3011 again. This ensures that the bending angle of the bending plate 204 on the metal sheet 4 is larger next time, so that the bending angle of the next metal sheet 4 after the second bend edge rebounds can be closer to the design value, thereby ensuring the bending quality.

[0062] Based on the above embodiments, the usage principle and working process of the embodiments of the present invention are as follows:

[0063] Initially, as shown in Figures 3 and 4, the mounting plate 1013 and the stop 10121 form a stop fit and are located at the lower limit position on the guide post 1012; the first bending block 103 and the second bending block 104 are at the same height and are both located at the lower limit position on the control block 102; the second bending block 203 is away from the metal plate 4; the sliding end of the telescopic rod 105 is located at the inner end of the slide groove 2032; and the bending plate 204 is in a horizontal state.

[0064] During use, the metal sheet 4 is first placed on top of the receiving part 202 with its surfaces overlapping, ensuring that the bent edge and the secondary bending block 203 are correspondingly set along the circumference. Then, the hydraulic cylinder is activated, and the output shaft of the hydraulic cylinder extends, synchronously driving the sliding plate 1011 to move downward. When the sliding plate 1011 moves, it simultaneously drives the fixed end of the telescopic rod 105 to move downward, shortening the telescopic rod 105. It also synchronously drives the mounting plate 1013, control block 102, first bending block 103, and second bending block 104 to move downward through the guide post 1012, compression spring 3 1014, and stop 10121, until the bottom of the first bending block 103 and the second bending block 104 contact the metal sheet 4. At this time, the first bending block 103 and the second bending block 104 remain stationary under the support of the receiving part 202 and the metal sheet 4.

[0065] As the sliding plate 1011 continues to move downward, the mounting plate 1013 and the control block 102 move downward synchronously. The first bending block 103 and the second bending block 104 move upward and outward relative to the control block 102 until the bottom of the control block 102 contacts the metal plate 4. When the bottom of the control block 102 contacts the metal plate 4, as shown in Figure 5, the first bending block 103 and the second bending block 104 are both located at their upper limit positions on the control block 102 and form a stop with the mounting plate 1013. The bottoms of the first bending strip 1031, the second bending strip 1041, the first bending block 103, the second bending block 104, and the control block 102 form a rectangular shape, preparing for the first bending. The telescopic rod 105 will be shortened to its shortest length. The mounting plate 1013 and the stop 10121 are spaced apart, and the compression spring 1014 is further compressed.

[0066] As the sliding plate 1011 continues to move downward, it continues to compress the compression spring 1014. The compression spring 1014 pushes the mounting plate 1013, control block 102, first bending block 103, and second bending block 104 downward. The control block 102, first bending block 103, and second bending block 104 simultaneously press down on the receiving part 202 and the metal plate 4, pressing them into the annular protrusion 2011. Under the constraint of the inner wall of the annular protrusion 2011, as shown in Figure 6, the bending edge is bent once, and the compression spring 1012 is compressed. On the other hand, it drives the telescopic rod 105 to shorten to its shortest length, and then drives the telescopic rod 105 to move downward. The telescopic rod 105 simultaneously... The sliding engagement between the sliding column 1051 and the sliding groove 2032 drives the secondary bending block 203 to move inward. Since the position of the stop 1052 in the horizontal direction remains unchanged, as the secondary bending block 203 moves, the adjusting plate 301 and the bending plate 204 gradually approach the stop 1052. Then, the adjusting inclined surface 3011 and the stop 1052 form a stop engagement. As the secondary bending block 203 continues to move, as shown in Figure 7, the bending plate 204 performs a secondary bend on the bending edge. At this time, under the stop of the stop 1052, it is easy to limit the rotation of the bending plate 204 when the bending edge rebounds, so that the bending plate 204 can maintain a horizontal state, thereby enabling continuous bending of the bending edge.

[0067] After the second bending of the bent edge is completed, a groove-like structure is formed between the bent edge and the metal plate 4. Bending strip 1031 and bending strip 2 1041 are inserted into this groove-like structure and form a snap-fit ​​fit. The output shaft of the hydraulic cylinder retracts, synchronously driving the sliding plate 1011 to move upward. The sliding plate 1011 drives the fixed end of the telescopic rod 105 to move upward, and the compression spring 3 1014 is released. Compression spring 2 is released at the same time, driving the receiving part 202, the metal plate 4, the control block 102, the first bending block 103 and the second bending block 2 104 to move upward until the mounting plate 1013 and the stop 10121 stop.

[0068] As the sliding plate 1011 continues to move upward, it simultaneously drives the mounting plate 1013 and the control block 102 to move upward. Under the constraint of the secondary bending block 203, the metal plate 4 remains stationary. Through the interlocking cooperation between the groove structure and the bending strip 1031 and bending strip 2041, the primary bending block 103 and primary bending block 204 remain stationary. This achieves bending and pressure holding of the metal plate 4, which is beneficial to improving the bending quality. At the same time, it forces the primary bending block 103 and primary bending block 204 to move downward and inward relative to the control block 102 to avoid jamming, until the bending strip 1031 and bending strip 2041 disengage from the groove structure. At this time, the telescopic rod 105 extends to its maximum length.

[0069] As the sliding plate 1011 continues to move upward, it simultaneously drives the mounting plate 1013, control block 102, first bending block 103, and second bending block 104 to move upward. At the same time, it simultaneously drives the telescopic rod 105 to move upward. The telescopic rod 105 simultaneously drives the secondary bending block 203 to move outward through the sliding cooperation between the sliding column 1051 and the sliding groove 2032, so that the secondary bending block 203 is separated from the metal plate 4, realizing material removal, as shown in Figure 9. As the secondary bending block 203 moves, the adjusting plate 301 and the bending plate 204 gradually move away from the stop 1052, realizing reset.

[0070] As shown in Figure 10, when the bent edge springs back, the bent edge drives the bending plate 204 to rotate clockwise. When the bending plate 204 rotates, it simultaneously drives the adjusting plate 301 to rotate clockwise. When the adjusting plate 301 rotates, it slides relative to the guide plate 302, causing the guide plate 302 to retract into the secondary bending block 203, and simultaneously compressing the compression spring 303. When the guide plate 302 moves, it simultaneously rubs the adjusting plate 301 inward through frictional engagement with the adjusting plate 301, causing the stop 1052 to contact the inclined surface 3011. The greater the rebound of the bent edge, the greater the upward movement of the contact point of the stop 1052 on the inclined plane 3011. This allows the adjusting plate 301 to drive the bending plate 204 to rotate downward to a larger angle when the stop 1052 contacts the inclined plane 3011 again. This ensures that the bending angle of the bending plate 204 on the metal sheet 4 is larger next time, so that the bending angle of the next metal sheet 4 after the second bend edge rebounds can be closer to the design value, thereby ensuring the bending quality.

[0071] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above embodiments are merely illustrative of several implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. A one-piece molding die for a metal shell, characterized in that, The integrated metal shell forming mold includes an upper mold and a lower mold, which are arranged vertically with the upper mold positioned above the lower mold. The upper mold includes an upper mold base that can slide vertically. A control block is located at the bottom of the upper mold base, and the control block can elastically slide relative to the upper mold base vertically. The control block has multiple primary bending blocks (first and second), which are alternately arranged circumferentially around the control block and can slide relative to the control block vertically and radially, configured to perform a single bending operation on the metal sheet. The upper mold base also has multiple telescopic rods that slide along the control block... The blocks are arranged circumferentially, and the telescopic rod can extend and retract vertically. The lower die includes a lower die base, and a receiving part is provided on the top of the lower die base. The receiving part can slide elastically in the vertical direction. The metal sheet is located on top of the receiving part during bending. The top of the lower die base is also provided with multiple secondary bending blocks, which are arranged circumferentially along the receiving part. The secondary bending blocks can slide radially along the receiving part and are configured to perform secondary bending on the metal sheet. Both primary bending block one and primary bending block two can form a snap-fit ​​engagement with the metal sheet after secondary bending. The sliding end of the telescopic rod is slidably inserted into the secondary bending block and is configured to control the secondary bending block. The sliding timing is as follows: the upper mold base has a sliding plate, and multiple guide pillars are set at the bottom of the sliding plate. A mounting plate is slidably fitted onto all the guide pillars, and the mounting plate can form a stop engagement with the guide pillars; an elastic element three connects the sliding plate and the mounting plate, and under the action of the elastic element three, the mounting plate has a downward tendency to move; a control block is fixedly set at the bottom of the mounting plate; a bending plate is hinged to each secondary bending block, and the secondary bending block is configured to perform secondary bending of the metal sheet through the bending plate; a stop is set on the sliding end of each telescopic rod, and the stop engagement can form a stop engagement with the bending plate; the integrated metal shell molding die also includes an adjustment component. The adjustment assembly is configured to adjust the bending angle of the bending plate on the metal sheet in the next bending step according to the springback of the secondary bending edge of the metal sheet. The greater the springback, the greater the bending angle in the next bending step. The adjustment assembly includes an adjustment plate and a guide plate. Each bending plate is equipped with an adjustment plate, which can rotate synchronously with the bending plate and also form a unidirectional engagement with the bending plate. The contact surfaces of the bending plate and the adjustment plate are equipped with ratchet teeth. The top of the adjustment plate is a slope, which slopes from the outside to the inside and from top to bottom. The slope can form a sliding stop engagement with the stop. Each secondary bending block is equipped with a guide plate, which can slide elastically in the vertical direction and form a friction engagement with the adjustment plate.

2. The integrated metal shell molding die according to claim 1, characterized in that, Each secondary bending block and the guide plate is connected by an elastic element. Under the action of the elastic element, the guide plate tends to move downward.

3. The integrated metal shell molding die according to claim 2, characterized in that, The elastic element is a compression spring.

4. The integrated metal shell molding die according to claim 1, characterized in that, An elastic element 2 connects the receiving part and the lower mold base. Under the action of the elastic element 2, the receiving part has a tendency to move upward.

5. The integrated metal shell molding die according to claim 4, characterized in that, The second elastic element is a compression spring.

6. The integrated metal shell molding die according to claim 1, characterized in that, The one-piece metal housing molding die also includes a drive component configured to provide a driving force for sliding the upper mold base.

7. The integrated metal shell molding die according to claim 6, characterized in that, The driving component is a hydraulic cylinder, and the output shaft of the hydraulic cylinder is located on the top of the upper mold base.

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