Peripheral edge folding device for electronic shielding case

Abstract

The utility model discloses a device for folding the periphery of an electronic shielding case, which relates to the technical field of mechanical stamping and comprises a workbench and a supporting seat, the top of the supporting seat is fixedly connected with a lifting driving piece, the output end of the lifting driving piece is fixedly connected with the top of an upper die fixing block, and the bottom of the upper die fixing block is clamped with a forming upper die. The top of the workbench is fixedly connected with a forming lower die, the surface of the forming lower die is sleeved with a middle lifting die, and the two sides of the top of the middle lifting die are fixedly connected with a limiting plate and a scraper knife. The utility model has the advantages that through the arrangement of the limiting plate, accurate positioning is realized when a shielding case material is fixed; by arranging the scraper knife, redundant parts of materials required by the shielding case are cut off before edge folding; by arranging the middle lifting die, the operation of bending and forming four edges at the same time is carried out in the lifting process of the middle lifting die. According to the device, the operation steps are simplified, errors are reduced, the mold stability is enhanced, the size accuracy of the frame is ensured, the production cost is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical stamping technical field, concretely relates to a kind of electronic shield four perimeter edge folding device. BACKGROUND

[0002] Electronic shield is a kind of metal cover for shielding electromagnetic interference inside and outside electronic equipment, and is widely used in mobile phone, computer and other electronic product manufacturing industry.

[0003] Due to functional requirements, the four perimeter of electronic shield must be bent at ninety degrees to form a closed structure. However, the current processing method needs to stamp out the shield material of predetermined size from the material strip first, and then use the engineering die to bend the four perimeter at ninety degrees. Due to the multiple operation steps, the cumulative error increases accordingly. In addition, the stability of the stamping die in the production process is insufficient, which also leads to the difficulty in ensuring the size of the inner and outer frames, the difficulty in alignment during installation, the high cost and the low production efficiency. Therefore, in order to solve the above problems, an electronic shield four perimeter edge folding device is proposed. SUMMARY

[0004] To solve the above technical problems, an electronic shield four perimeter edge folding device is provided, which solves the problem of the existing processing method of stamping out the material of predetermined size first, and then bending the four perimeter at ninety degrees. Due to the multiple operation steps, the cumulative error increases accordingly. In addition, the stability of the stamping die in the production process is insufficient, which leads to the difficulty in ensuring the size of the inner and outer frames, the difficulty in alignment during installation, the high cost and the low production efficiency.

[0005] To achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0006] An electronic shield four perimeter edge folding device, comprising a workbench and a support seat, the top side of the workbench is fixedly connected with the bottom side of the support seat, the top of the workbench is fixedly connected with a forming lower die, the surface of the forming lower die is sleeved with a middle lifting die;

[0007] The top of the support seat is fixedly connected with a lifting drive, the output end of the lifting drive is fixedly connected with the top of an upper die fixed block, the bottom of the upper die fixed block is clamped with a forming upper die;

[0008] The top two sides of the middle lifting die are fixedly connected with a limiting plate and a spud, the bottom two sides of the middle lifting die are threadedly connected with two lead screws and two linear guide rods, the bottom of the workbench is fixedly connected with two support plates, and the bottom of the two support plates is fixedly installed with a stepping motor.

[0009] Preferably, the bottom of the upper die fixing block is processed with a groove, the front and back sides of the upper die fixing block are provided with clamping strips, the top of the forming upper die is processed with a boss, and the front and back sides of the forming upper die are provided with protruding clamping grooves.

[0010] Preferably, the forming upper die and the forming lower die are correspondingly arranged, the groove and the clamping strip are correspondingly arranged and sized with the boss and the protruding clamping groove.

[0011] Preferably, the limiting plates are symmetrically arranged with the spades, and the two lead screws and the two straight guide rods are symmetrically arranged.

[0012] Preferably, the top of the workbench is symmetrically provided with through holes on both sides, and the two supporting plates are arranged directly below the through holes and on opposite sides of the forming lower die.

[0013] Preferably, the lead screw penetrates through the through hole, and the output end of the stepping motor is fixedly connected with the lead screw.

[0014] Preferably, the outer wall of the supporting seat is symmetrically provided with electric push rods on both sides, the output end of the electric push rod is fixedly connected with two L-shaped fixing plates penetrating through the side wall of the supporting seat, the electric push rod drives the two L-shaped fixing plates to move horizontally, and the folded edge of the electronic shield cover is fixed to the main body of the electronic shield cover.

[0015] Preferably, the two L-shaped fixing plates are sized with the forming lower die.

[0016] Compared with the prior art, the electronic shield cover four-side folding device has the advantages that:

[0017] The electronic shield cover four-side folding device has the advantages that: when the shield cover material is placed on the forming lower die, the limiting plates are used for accurate positioning, the lifting driving element is started, the upper die fixing block drives the forming upper die to press down, so that the main body of the shield cover is quickly fixed. At the same time, the rubber pads are installed on the shield cover clamping and folding die, so that the problem of reduced durability and crack risk of the shield cover caused by direct operation of the die is effectively solved, and the working efficiency and processing precision of the shield cover four-side folding device are improved. Then, the stepping motor is started to drive the lead screw to rotate, the middle lifting die is slowly lifted, the spade cuts the excess part, and then the middle lifting die passes through the shield cover to completely lift the folded edge, and the four edges are simultaneously bent and formed. Finally, the electric push rod is started to drive the L-shaped fixing plate to move relatively until the L-shaped fixing plate is attached to the four sides of the shield cover, so that the folded edge of the four sides of the shield cover is fixed to the main body. The device simplifies the operation steps, reduces errors, enhances the stability of the die, ensures the accuracy of the frame size, reduces the production cost, and improves the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the three-dimensional structure schematic view of the utility model;

[0019] Figure 2 It is the structure schematic view of the front view of the utility model;

[0020] Figure 3 It is the structure schematic view of the middle lifting mould of the utility model;

[0021] Figure 4 It is the structure schematic view of the upper mould fixing block of the utility model;

[0022] Figure 5 It is the structure schematic view of the forming upper mould of the utility model.

[0023] The figure mark is:

[0024] 1, workbench;2, support seat;3, lifting driving part;

[0025] 4, upper mould fixing block;41, recess;42, clamping strip;

[0026] 5, forming upper mould;51, boss;52, protruding clamping groove;

[0027] 6, forming lower mould;

[0028] 7, middle lifting mould;71, limiting plate;72, shovel knife;73, support plate;74, step motor;75, lead screw;76, straight line guide rod;

[0029] 8, through hole;

[0030] 9, electric push rod;91, L-shaped fixed plate. Specific implementation

[0031] The following description is used to disclose the utility model so that the person skilled in the art can realize the utility model. The preferred embodiments in the following description are only as examples, and other obvious variants can be thought of by the person skilled in the art.

[0032] Please refer to Figures 1 to 5 As shown in the figure, a kind of electronic shield four around edge folding device, including workbench 1 and support seat 2, the top side of workbench 1 and the bottom side of support seat 2 are fixedly connected.

[0033] Specific, the top of the support seat 2 is fixedly connected with a lifting drive 3, which can be provided as an electric push rod, an oil cylinder or an air cylinder. In the embodiment, the lifting drive 3 is provided as an air cylinder. The output end of the lifting drive 3 is fixedly connected with the top of an upper mold fixed block 4. The bottom of the upper mold fixed block 4 is clamped with a forming upper mold 5. The bottom of the upper mold fixed block 4 is processed with a groove 41. The front and rear sides of the upper mold fixed block 4 are provided with clamping strips 42. The top of the forming upper mold 5 is processed with a boss 51. The front and rear sides of the forming upper mold 5 are provided with protruding clamping grooves 52. The groove 41 and the clamping strips 42 correspond to the boss 51 and the protruding clamping grooves 52 in position and are suitable in size. After the shield is placed on the forming lower mold 6, the lifting drive 3 drives the upper mold fixed block 4 to drive the forming upper mold 5 to descend, so that the forming upper mold 5 abuts against the shield and presses the shield body tightly on the forming lower mold 6.

[0034] Please refer to Figure 1 and Figure 3 As shown in the drawings, the top of the workbench 1 is fixedly connected with a forming lower mold 6. The forming upper mold 5 and the forming lower mold 6 are provided in position correspondence. The bottom of the forming upper mold 5 and the top of the forming lower mold 6 are both provided with rubber pads, so as to effectively protect the surface of the shield during the process of folding the edges of the shield and avoid damage to the shield due to extrusion. The surface of the forming lower mold 6 is sleeved with a middle lifting mold 7. The inner side of the middle lifting mold 7 is provided with chamfers. In the process of slow lifting, the chamfers can guide the edge of the folded shield to the shield body. The top of the middle lifting mold 7 is fixedly connected with a limiting plate 71 and a shovel 72 on both sides. The limiting plate 71 and the shovel 72 are provided in position symmetry. The limiting plate 71 can accurately position the shield material when the shield material is placed on the forming lower mold 6. The shovel 72 can cut off the excess part of the shield material in the process of slow lifting before the edges are folded. The bottom of the middle lifting mold 7 is threadedly connected with two lead screws 75 and two linear guide rods 76. The two lead screws 75 and the two linear guide rods 76 are provided in position oblique symmetry. The middle lifting mold 7 is provided with mounting holes. Linear bearings are arranged in the mounting holes. The upper ends of the lead screws 75 and the linear guide rods 76 are mounted in the bearing holes. The top of the workbench 1 is symmetrically provided with through holes 8 on both sides. The two lead screws 75 penetrate through the through holes 8. The bottom of the workbench 1 is fixedly connected with two support plates 73. The two support plates 73 are arranged directly below the through holes 8 and are respectively located on the opposite sides of the forming lower mold 6. The bottom of each support plate 73 is fixedly mounted with a stepping motor 74. The output end of the stepping motor 74 is connected with the lead screw 75. After the shield body is pressed tightly on the forming lower mold 6, the stepping motor 74 drives the lead screw 75 to rotate, so as to drive the middle lifting mold 7 to first slowly rise along the forming lower mold 6, drive the shovel 72 to cut off the excess part of the shield material, then drive the middle lifting mold 7 to completely rise through the forming lower mold 6, lift the edge of the folded shield, and perform the operation of simultaneously folding and forming four edges.

[0035] Further, in the above technical scheme, the outer wall of the support base 2 is symmetrically provided with an electric push rod 9 on both sides, the output end of the electric push rod 9 is fixedly connected with two L-shaped fixing plates 91 penetrating through the side wall of the support base 2, the electric push rod 9 drives the two L-shaped fixing plates 91 to move horizontally, and the two L-shaped fixing plates 91 are matched with the size of the lower forming die 6. The electric push rod 9 can drive the L-shaped fixing plate 91 to move relatively until it is attached to the four sides of the shielding cover, so as to fix the edge of the folded edge of the shielding cover around the shielding cover body.

[0036] Working principle: when the four sides of the electronic shielding cover are folded, the shielding cover material is placed in the lower forming die 6, first, the limiting plate 71 is accurately positioned, then the lifting driving part 3 is started, the upper die fixed block 4 drives the upper forming die 5 to press down, so as to quickly fix the shielding cover body. Then start the stepper motor 74 to drive the lead screw 75 to rotate, drive the middle lifting die 7 to slowly rise along the lower forming die 6, make the shovel 72 cut the excess part of the shielding cover, then drive the middle lifting die 7 to pass through the lower forming die 6 and the shielding cover to completely rise, lift the edge of the folded edge, and simultaneously fold and form four edges. Finally, start the electric push rod 9 to drive the L-shaped fixing plate 91 to move relatively until it is attached to the four sides of the shielding cover, so as to fix the edge of the folded edge around the shielding cover body.

[0037] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. An electronic shield perimeter folding device comprising a worktable (1) and a support seat (2), characterized in that: The top side of the workbench (1) is fixedly connected with the bottom side of the support base (2), the top of the workbench (1) is fixedly connected with a shaped lower die (6), and the surface of the shaped lower die (6) is sleeved with a middle upper die (7); The top of the support base (2) is fixedly connected with a lifting driving piece (3), the output end of the lifting driving piece (3) is fixedly connected with the top of an upper die fixed block (4), and the bottom of the upper die fixed block (4) is clamped with a shaped upper die (5); The top of the middle upper die (7) is fixedly connected with a limiting plate (71) and a shovel (72) on both sides, the bottom of the middle upper die (7) is threadedly connected with two lead screws (75) and two straight guide rods (76), and the bottom of the workbench (1) is fixedly connected with two supporting plates (73), and the bottom of the two supporting plates (73) is fixedly installed with a stepping motor (74).

2. A device for folding the edges of an electronic shield around a corner as defined in claim 1, characterized in that: The bottom of the upper die fixed block (4) is processed with a groove (41), the front and rear sides of the upper die fixed block (4) are provided with clamping strips (42), the top of the shaped upper die (5) is processed with a boss (51), and the front and rear sides of the shaped upper die (5) are provided with protruding clamping grooves (52).

3. An electronic shield can four corner flanging apparatus as defined in claim 2 wherein: The shaped upper die (5) and the shaped lower die (6) are correspondingly arranged, the groove (41) and the clamping strip (42) are correspondingly arranged and adapt in size to the boss (51) and the protruding clamping groove (52).

4. The electronic shield four-sides folding device of claim 1, wherein: The limiting plate (71) and the shovel (72) are symmetrically arranged, and the two lead screws (75) and the two straight guide rods (76) are diagonally symmetrically arranged.

5. The electronic shield can four corner flanging apparatus of claim 1 wherein: The top of the workbench (1) is symmetrically provided with through holes (8) on both sides, the two supporting plates (73) are arranged directly below the through holes (8), and the two supporting plates (73) are located on opposite sides of the shaped lower die (6) respectively.

6. An electronic shield can four corner flanging apparatus as defined in claim 5 wherein: The two lead screws (75) penetrate the through holes (8), and the output end of the stepping motor (74) is fixedly connected with the lead screw (75).

7. The electronic shield can four corner flanging apparatus of claim 1 wherein: The outer walls of the support base (2) are symmetrically provided with electric push rods (9), the output ends of the electric push rods (9) are fixedly connected with two L-shaped fixed plates (91) penetrating the side walls of the support base (2), the electric push rods (9) drive the two L-shaped fixed plates (91) to move horizontally, and are used for fixing the folded edge of the electronic shield cover to the main body of the electronic shield cover.

8. A device for folding the edges of an electronic shield around a corner as defined in claim 7, characterized in that: The two L-shaped fixed plates (91) are adapt in size to the shaped lower die (6).

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