Stamping die for shielding case production

Abstract

The utility model discloses a stamping die for producing a shielding case, which relates to the technical field of stamping dies and comprises a lower die and an upper die, the upper die is positioned at the top of the lower die, a shaping component and a stamping part are respectively arranged at the top of the lower die, the shaping component comprises a demoulding part, the demoulding part comprises a female die, and the inner side of the female die is movably connected with a pressing rod. The pressing rods are symmetrically distributed on the two sides of the female die, one ends of the pressing rods extend into the lower die, limiting rings are fixedly installed on the outer sides of the pressing rods, springs are arranged on the outer sides of the pressing rods, the springs are arranged in the female die and located at the bottoms of the limiting rings, and the pressing rods are movably connected into the female die through the springs. According to the stamping die for producing the shielding case, after the upper die body and the lower die body are separated, the spring which restores to stretch pushes the pressing rod connected with the limiting ring to protrude out of the female die body, the demolding shaft is ejected out of the bottom of the shielding case, and therefore the shielding case of the groove in the female die body is separated from the female die body, and the shielding case is not prone to being damaged in the demolding process.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a stamping die for producing shielding covers. Background Art

[0002] A shielding cover is a component used in electronic devices, communication devices, or other electromagnetic-sensitive devices. Its main function is to provide electromagnetic shielding protection. The main function of the shielding cover is achieved through its outer shell made of conductive materials (usually metals such as aluminum, copper, etc.).

[0003] Shielding covers are usually manufactured by stamping according to specific application requirements. The Chinese patent with the authorized announcement number CN218425158U discloses a stamping die for producing RF shielding covers. By setting a limiting outer shell, a limiting backing plate, and a moving plate, the device can stably limit the shielding cover plate during the process of placing and stamping the shielding cover plate, so as to solve the problem of a large number of defective products caused by poor limiting effect of the original device.

[0004] The stamping die used for producing shielding covers is a tool specifically designed to stamp metal plates (such as aluminum, stainless steel, etc.) into shielding covers with specific shapes and sizes. The die is divided into an upper die and a lower die. Through a hydraulic structure, a high pressure is applied to extrude the metal plate along the groove shape of the upper die to form the outer shape of the shielding cover. However, since the extruded shielding cover fits closely with the lower die, when demolding, tools are needed to lift the edge of the shielding cover, which is likely to damage the outer shape of the shielding cover. Summary of the Utility Model

[0005] In view of the above problem that the existing extruded shielding cover fits closely with the lower die, and when demolding, tools are needed to lift the shielding cover, which is likely to damage the outer shape of the shielding cover, the present utility model is proposed.

[0006] Therefore, the purpose of the present utility model is to provide a stamping die for producing shielding covers, and its purpose is: through the extended spring, push the pressure rod to drive the demolding shaft connected by the lifting plate to eject from the bottom of the shielding cover, so that the shielding cover in the groove of the female die is separated from the female die.

[0007] To solve the above technical problems, the present utility model provides the following technical solution: A stamping die for producing shielding covers, which includes a lower die and an upper die. The upper die is located on the top of the lower die. A shaping component and a stamping component are respectively arranged on the top of the lower die, and the stamping component is located on the top of the upper die;

[0008] The shaping component includes a demolding member, and the demolding member includes a female mold. The female mold is fixedly installed on the top of the lower mold. A pressure rod is movably connected inside the female mold. The pressure rods are symmetrically distributed on both sides of the female mold, and one end of the pressure rod extends into the lower mold;

[0009] A limiting ring is fixedly installed on the outer side of the pressure rod. Springs are arranged on the outer sides of the pressure rods, and the springs are arranged in the female mold and located at the bottom of the limiting ring. The pressure rod is movably connected in the female mold through the spring;

[0010] A lifting plate is fixedly installed on the outer side of the limiting ring. A demolding shaft is fixedly installed at one end of the lifting plate away from the limiting ring, and the demolding shaft is arranged parallel to the pressure rod.

[0011] As a preferred scheme of the stamping die for producing the shielding cover of the present invention, wherein: a positioning ring is further arranged on the top of the female mold. The positioning ring is located on the top of the pressure rod. A positioning rod is fixedly installed inside the positioning ring, and the positioning rod has the same diameter as the pressure rod.

[0012] As a preferred scheme of the stamping die for producing the shielding cover of the present invention, wherein: the shaping component further includes a pressing component. The pressing component includes a male mold. The male mold is arranged at the bottom of the upper mold. A clamping block is arranged on the outer side of the male mold. Locking rods are hinged on the tops of the clamping blocks, and the clamping blocks are connected with sliders through the locking rods.

[0013] As a preferred scheme of the stamping die for producing the shielding cover of the present invention, wherein: the slider is threadedly connected with the upper mold through a bidirectional lead screw. One end of the bidirectional lead screw is connected to the output shaft of a motor, and the motor is fixedly installed on the outer side of the upper mold.

[0014] As a preferred scheme of the stamping die for producing the shielding cover of the present invention, wherein: the sliders are symmetrically arranged on the outer side of the male mold, and the sliders are connected by a synchronous rod.

[0015] As a preferred scheme of the stamping die for producing the shielding cover of the present invention, wherein: the stamping part includes a top plate. The top plate is located on the top of the upper mold. A hydraulic push rod is fixedly installed on the top of the top plate. The output shaft of the hydraulic push rod passes through one end of the top plate and is connected to the top of the upper mold.

[0016] As a preferred scheme of the stamping die for producing the shielding cover of the present invention, wherein: a limiting column is fixedly installed at the bottom of the top plate. One end of the limiting column passing through the upper mold is connected to the top of the lower mold.

[0017] The beneficial effects of the present invention:

[0018] 1. After the upper die and the lower die are separated, the restored spring pushes the pressure rod connected to the limit ring to protrude from the female die, and the demoulding shaft ejects from the bottom of the shielding cover, so that the shielding cover in the groove of the female die is separated from the female die, making the shielding cover not easily damaged during the demoulding process.

[0019] 2. The output shaft of the motor drives the motor to rotate, so that the threaded slider moves synchronously under the action of the synchronous rod, and the distance between the clamping blocks is increased through the locking rod, thereby releasing the locking of the punch, separating the punch from the upper die, and facilitating the replacement of punches of different models.

[0020] 3. Through the extension of the length of the output shaft of the hydraulic push rod, the upper die gradually approaches the state always parallel to the upper die under the restriction of the limit column, and through the combination of the punch on the upper die and the female die in the lower die, the stamping and shaping of the shielding cover are completed while reducing the movement error. Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0022] Figure 1 It is a schematic diagram of the overall structure of the stamping die for producing the shielding cover of the present invention.

[0023] Figure 2 It is a schematic cross-sectional structure diagram of the stamping die for producing the shielding cover of the present invention.

[0024] Figure 3 It is for the stamping die for producing the shielding cover of the present invention Figure 2 Schematic diagram of the enlarged structure of part A.

[0025] Figure 4 It is a schematic cross-sectional structure diagram of the demoulding part of the stamping die for producing the shielding cover of the present invention.

[0026] Figure 5 It is a schematic diagram of the relevant structure of the upper die and the stamping part of the stamping die for producing the shielding cover of the present invention.

[0027] Figure 6 It is a schematic diagram of the structure of the pressing part of the stamping die for producing the shielding cover of the present invention.

[0028] Explanation of the Reference Numerals:

[0029] 1. Lower die; 2. Upper die; 3. Shaping component; 31. Demolding part; 311. Female die; 312. Pressing rod; 313. Limit ring; 314. Spring; 315. Lifting plate; 316. Demolding shaft; 317. Positioning ring; 318. Positioning rod; 32. Pressing component; 321. Male die; 322. Block; 323. Locking rod; 324. Slide block; 325. Bi-directional lead screw; 326. Motor; 327. Synchronous rod; 4. Stamping part; 41. Top plate; 42. Hydraulic push rod; 43. Limit post. Detailed implementation manners

[0030] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following provides a detailed description of the specific implementation manners of the present utility model in conjunction with the accompanying drawings of the specification.

[0031] Embodiment 1

[0032] Referring to Figures 1-6 , which is the first embodiment of the present utility model, a stamping die for shielding cover production is provided. This stamping die for shielding cover production includes a lower die 1 and an upper die 2. The upper die 2 is located on the top of the lower die 1. A shaping component 3 and a stamping part 4 are respectively arranged on the top of the lower die 1. The stamping part 4 is located on the top of the upper die 2. The shaping component 3 includes a demolding part 31. The demolding part 31 includes a female die 311. The female die 311 is fixedly installed on the top of the lower die 1. A pressing rod 312 is movably connected inside the female die 311. The pressing rods 312 are symmetrically distributed on both sides of the female die 311, and one end of the pressing rod 312 extends into the lower die 1. A limit ring 313 is fixedly installed on the outer side of the pressing rod 312. Springs 314 are arranged on the outer sides of the pressing rods 312, and the springs 314 are arranged in the female die 311 and located at the bottom of the limit ring 313. The pressing rod 312 is movably connected in the female die 311 through the spring 314. A lifting plate 315 is fixedly installed on the outer side of the limit ring 313. A demolding shaft 316 is fixedly installed at one end of the lifting plate 315 away from the limit ring 313, and the demolding shaft 316 is arranged parallel to the pressing rod 312. A groove capable of stamping the shielding cover is arranged inside the female die 311. The pressing rod 312 is located outside the groove of the female die 311 and can move in the hole of the female die 311. When the spring 314 is in the extended state, it pushes the pressing rod 312 connected to the limit ring 313 to protrude from the female die 311. The demolding shaft 316 moves synchronously with the pressing rod 312 through the lifting plate 315, and after the shaping stamping is completed, it protrudes from the hole in the female die 311, thereby separating the shielding cover in the groove of the female die 311 from the female die 311, so that the shielding cover is not easily damaged during the demolding process.

[0033] A positioning ring 317 is also provided at the top of the female mold 311. The positioning ring 317 is located at the top of the pressure rod 312. A positioning rod 318 is fixedly installed inside the positioning ring 317. The positioning rod 318 has the same diameter as the pressure rod 312. One end of the positioning rod 318 is fixedly connected to the upper mold 2. When the distance between the upper mold 2 and the lower mold 1 decreases, the positioning rod 318 can squeeze the pressure rod 312 to reduce the length protruding from the female mold 311, so that the demolding shaft 316 enters the female mold 311. The positioning ring 317 can limit the moving range of the positioning rod 318 in the female mold 311, so that after the positioning rod 318 is butted against the pressure rod 312, the demolding shaft 316 is flush with the surface of the female mold 311.

[0034] The shaping assembly 3 further includes a pressing member 32. The pressing member 32 includes a male mold 321. The male mold 321 is provided at the bottom of the upper mold 2. A clamping block 322 is provided on the outside of the male mold 321. A locking rod 323 is hinged to the top of each clamping block 322. The clamping block 322 is connected to a slider 324 through the locking rod 323. The male mold 321 is clamped in the upper mold 2 through the clamping block 322. The clamping block 322 is hinged to the bottom of the slider 324 through the locking rod 323. The distance between the clamping blocks 322 is positively correlated with the distance between the sliders 324.

[0035] The slider 324 is threadedly connected to the upper mold 2 through a bidirectional lead screw 325. One end of the bidirectional lead screw 325 is connected to the output shaft of a motor 326. The motor 326 is fixedly installed on the outside of the upper mold 2. The bidirectional lead screw 325 penetrates through the whole slider 324, and the thread directions between the symmetrically arranged sliders 324 are opposite.

[0036] The sliders 324 are symmetrically arranged on the outside of the male mold 321. The sliders 324 are connected by a synchronous rod 327. When the sliders 324 move, they are always on the same horizontal plane. The synchronous rod 327 can keep the adjacent sliders 324 moving synchronously.

[0037] The stamping part 4 includes a top plate 41. The top plate 41 is located at the top of the upper mold 2. A hydraulic push rod 42 is fixedly installed on the top of the top plate 41. The output shaft of the hydraulic push rod 42 passes through one end of the top plate 41 and is connected to the top of the upper mold 2. The hydraulic push rod 42 can change the distance between the upper mold 2 and the lower mold 1 by controlling the change in the extension length of its output shaft, so as to realize the stamping and shaping of the shielding cover.

[0038] Limit posts 43 are fixedly installed at the bottom of the top plate 41. One end of the limit posts 43 passing through the upper mold 2 is connected to the top of the lower mold 1. The limit posts 43 keep the upper mold 2 and the lower mold 1 always parallel when they approach each other, reducing the error generated during the moving process.

[0039] During use, by extending the length of the output shaft of the hydraulic push rod 42, the upper die 2 gradually approaches while being restricted by the limit posts 43 in a state always parallel to the upper die 2, and through the combination of the punch 321 on the upper die 2 and the die cavity 311 in the lower die 1, the stamping and shaping of the shielding cover is completed while reducing the movement error. During this process, the positioning rod 318 squeezes the pressure rod 312 into the die cavity 311, and after the positioning rod 318 and the die cavity 311 are engaged, the maximum movement distance is reached. The limiting ring 313 is located below the shielding cover through the demolding shaft 316 connected to the positioning rod 318 and is flush with the surface of the demolding shaft 316. The spring 314 is compressed. After the upper die 2 and the lower die 1 are separated, the restored spring 314 pushes the pressure rod 312 connected to the limiting ring 313 to protrude from the die cavity 311, and the demolding shaft 316 ejects from the bottom of the shielding cover, so that the shielding cover in the groove of the die cavity 311 is separated from the die cavity 311, making the shielding cover not easily damaged during the demolding process. When it is necessary to replace the punch 321 of different sizes, the output shaft of the motor 326 is driven to rotate, so that the thread-connected slider 324 moves synchronously under the action of the synchronizing rod 327, and the distance between the clamping blocks 322 is increased through the locking rod 323, thereby releasing the locking of the punch 321 and separating the punch 321 from the upper die 2.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A stamping die for producing a shielding cover, comprising a lower die (1) and an upper die (2), wherein the upper die (2) is located on the top of the lower die (1), and is characterized in that: The top of the lower mold (1) is provided with a shaping component (3) and a stamping part (4), respectively, and the stamping part (4) is located on the top of the upper mold (2); The shaping component (3) comprises a demoulding member (31), wherein the demoulding member (31) comprises a concave mold (311), wherein the concave mold (311) is fixedly mounted on the top of the lower mold (1), wherein a pressure rod (312) is movably connected to the inner side of the concave mold (311), wherein the pressure rod (312) is symmetrically distributed on both sides of the concave mold (311), and one end of the pressure rod (312) extends into the lower mold (1); A limiting ring (313) is fixedly installed on the outer side of the pressure rod (312), a spring (314) is arranged on the outer side of the pressure rod (312), and the spring (314) is arranged in the concave mold (311) and located at the bottom of the limiting ring (313), and the pressure rod (312) is movably connected to the concave mold (311) through the spring (314); A lifting plate (315) is fixedly mounted on the outer side of the limiting ring (313), and a demoulding shaft (316) is fixedly mounted on one end of the lifting plate (315) away from the limiting ring (313), and the demoulding shaft (316) is arranged in parallel with the pressure rod (312).

2. A stamping die for producing a shielding cover according to claim 1, characterized in that: A positioning ring (317) is also provided at the top of the concave mold (311). The positioning ring (317) is located at the top of the pressure rod (312). A positioning rod (318) is fixedly installed on the inner side of the positioning ring (317). The positioning rod (318) has the same diameter as the pressure rod (312).

3. The punching die for producing a shielding cover according to claim 1, characterized in that: The shaping component (3) also includes a pressing piece (32), and the pressing piece (32) includes a punch (321), and the punch (321) is arranged at the bottom of the upper mold (2). A clamping block (322) is arranged on the outer side of the punch (321), and a locking rod (323) is hinged on the top of the clamping block (322), and the clamping block (322) is connected to a slider (324) via the locking rod (323).

4. The punching die for producing a shielding cover according to claim 3, characterized in that: The slider (324) is threadedly connected to the upper mold (2) via a bidirectional screw rod (325); one end of the bidirectional screw rod (325) is connected to the output shaft of a motor (326); and the motor (326) is fixedly mounted on the outer side of the upper mold (2).

5. The punching die for producing a shielding cover according to claim 4, characterized in that: The sliders (324) are symmetrically arranged on the outside of the punch (321), and the sliders (324) are connected via a synchronization rod (327).

6. The punching die for producing a shielding cover according to claim 1, characterized in that: The stamping part (4) comprises a top plate (41), wherein the top plate (41) is located at the top of the upper die (2), and a hydraulic push rod (42) is fixedly installed on the top of the top plate (41), and an output shaft of the hydraulic push rod (42) passes through one end of the top plate (41) and is connected to the top of the upper die (2).

7. A stamping die for producing a shielding cover according to claim 6, characterized in that: A limiting column (43) is fixedly mounted on the bottom of the top plate (41), and the limiting column (43) passes through one end of the upper mold (2) and is connected to the top of the lower mold (1).

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