Metal shell forming structure equipment of external keyboard and method thereof

Abstract

The invention relates to the technical field of stamping dies, in particular to metal shell forming structure equipment of an external keyboard and a method thereof.The forming structure equipment comprises an equipment body, a lower stamping die and an upper stamping die are installed on the equipment body, a fixed pressing block and a through hole are arranged on the upper stamping die, and an upper frame is movably installed in the upper stamping die; a movable pressing block is arranged on the upper frame, a pressing block structure on the upper punching die is divided into a fixed pressing block and a movable pressing block, the fixed pressing block is located on the inner ring of the movable pressing block, an outer frame and an inner frame are arranged in the lower punching die in a high-low staggered lifting mode, an outer ring cushion block is installed on the outer frame, and an inner ring cushion block is installed on the inner frame. Second springs are connected to the inner frame, supporting pieces are connected to the outer frame and the inner frame, a double-inclined-face sliding block is movably installed in the lower punching die, and an air blowing groove and a recycling groove are connected to the lower punching die. According to the invention, the molding of the keyboard metal shell can be completed twice in the same stamping equipment, so that the processing cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of stamping dies, in particular to a metal shell forming structure device for an external keyboard and a method thereof. Background Art

[0002] External keyboards are increasingly used in computers and related equipment. In the production process of metal shells for external keyboards, stamping technology has become the main manufacturing method due to its superior production efficiency and processing precision. Stamping machines and stamping dies can be used to form and punch metal plates to form a keyboard metal shell with multiple holes.

[0003] A stamping machine is a device that provides high pressure through a mechanical or hydraulic system, and can quickly and continuously apply impact force to metal materials. The stamping die is an indispensable key component in the stamping machine. The stamping die is generally composed of an upper die and a lower die. At present, when it is necessary to punch holes in the metal shell of the keyboard, the metal plate is usually placed on the lower die, and the corresponding pressure block design on the upper die generates pressure to process holes on the metal plate. Since there are usually dozens or hundreds of holes that need to be processed on the metal shell of the keyboard, if a one-time punching method is used, it is very easy to cause deformation of the metal plate. Therefore, the current processing is generally divided into at least two steps, and different holes are processed on different stamping machines and stamping dies. Not only is the processing efficiency low, but it also requires multiple different machine tools and dies, and the processing cost is high. Summary of the invention

[0004] The object of the present invention is to provide a metal shell molding structure device for an external keyboard and a method thereof to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a metal shell forming structure device for an external keyboard, comprising a device main body, a lower punch is fixedly installed on the device main body, and an upper punch is lifted and installed on the device main body, a fixed pressure block and a through hole are arranged on the upper punch, and an upper frame is movably installed in the upper punch, a first spring is installed on the upper frame, and a movable pressure block is arranged on the upper frame, the movable pressure block is located in the through hole, and the pressure block structure on the upper punch is divided into a fixed pressure block and a movable pressure block, and the fixed pressure block is located at the inner ring of the movable pressure block, a first rotating shaft is arranged on the upper punch, and a deflection frame is installed on the first rotating shaft, and the deflection frame is located above the upper frame, an outer frame and an inner frame are lifted and lowered in the lower punch, an outer ring gasket is installed on the outer frame, and an inner ring gasket is installed on the inner frame, and a keyboard slot is arranged on the lower punch, and the keyboard slot Corresponding to the fixed pressure block and the movable pressure block, a second spring is connected to the inner frame, and support members are connected to the outer frame and the inner frame. A double-bevel slider is movably installed in the lower punch, and the two bevels of the double-bevel slider are respectively connected to the support members of the outer frame and the inner frame, and the height of the outer frame and the inner frame is controlled by moving the double-bevel slider. A second rotating shaft is arranged on the lower punch, and the second rotating shaft is connected with a driven gear, and the outer frame is connected with a driven rack. A synchronous drive structure is installed on the lower punch, and the synchronous drive structure can synchronously drive the first rotating shaft and the second rotating shaft, an air blowing groove and a recovery groove are connected to the lower punch, and a half cover plate is movably installed on the air blowing groove, a middle air port and a side air port are arranged on the air blowing groove, the half cover plate can be in a position to cover the middle air port or the side air port of the air blowing groove, and the position of the half cover plate is adjusted with the lifting and lowering of the outer frame.

[0006] Preferably, the lower punch is installed on a pedestal of the equipment body, and the upper punch is installed on a lifting platform of the equipment body, the upper punch is located above the lower punch, a guide rod is installed on the upper punch, and an alignment hole is provided on the lower punch.

[0007] Preferably, the fixed pressing block is installed on the lower surface of the upper punch, and the upper frame is movably installed in the upper punch through the support legs, the first spring is installed on the support legs, and the movable pressing block is installed on the bottom surface of the upper frame.

[0008] Preferably, the outer frame and the inner frame are limited and movably installed in the lower punch, and the outer ring gasket and the inner ring gasket are in the keyboard groove, the second spring is connected between the inner frame and the lower punch, and the support is vertically connected to the outer frame and the inner frame, and the double-bevel slider is horizontally slidably installed in the lower punch.

[0009] Preferably, the synchronous drive structure includes a slide seat installed on the side wall of the lower punch, and a drive rack is movably installed on the slide seat, and the drive rack is pushed by a push rod.

[0010] Preferably, a deflection frame and an upper gear are respectively installed at both ends of the first rotating shaft, and a driven gear and a lower gear are respectively installed at both ends of the second rotating shaft, the lower gear is meshed with the driving rack, and the driven gear is meshed with the driven rack, and the upper gear and the lower gear are meshed when the upper punch and the lower punch are combined.

[0011] Preferably, the air blowing slot and the recovery slot are respectively connected to two sides of the lower punch die, and the air blowing slot is connected to the air pump device through an external pipe.

[0012] Preferably, the air inlet of the air blowing slot and the recovery outlet of the recovery slot are both arranged toward the cavity of the lower punch die, and two half cover plates are provided, and bottom brackets are provided on the two half cover plates, and fixed magnetic blocks with reversed magnetic poles are installed on the two bottom brackets.

[0013] Preferably, a magnetic base is provided in the lower punch, and two switching shafts are rotatably installed in the magnetic base, friction wheels and movable magnetic blocks are respectively installed at both ends of the switching shafts, and an insertion strip is installed on the outer frame, and the insertion strip is connected between the two friction wheels, and the magnetic poles of the two movable magnetic blocks are set in opposite directions.

[0014] A method for processing an external keyboard metal shell forming structure device, the processing method comprising the following steps:

[0015] S1, punching the inner ring hole, first position the metal plate on the lower punch, then start the lifting platform to drive the upper punch to move downward, the upper punch merges with the lower punch to generate pressure, and the fixed pressure block contacts the metal plate on the lower punch to form the inner ring hole;

[0016] S2, punching the outer ring holes. After the inner ring holes are punched, the driving rack is pulled by the push rod, so that the driving rack drives the lower gear to rotate, and the lower gear can drive the upper gear to rotate synchronously, so that the first rotating shaft and the second rotating shaft rotate. The first rotating shaft drives the deflection frame to rotate, and the pressure is generated to press the movable pressure block downward to punch the hole. The second rotating shaft drives the outer ring gasket in the lower punch die to descend and the inner ring gasket to rise, and cooperate with the movable pressure block to punch the outer ring hole on the metal plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention utilizes stamping equipment and a stamping die to form the metal shell of an external keyboard. The stamping die is composed of a lower die and an upper die, wherein the pressure block structure on the upper die is composed of a fixed pressure block and a movable pressure block. The fixed pressure block can form the inner circle holes, and the movable pressure block can punch the outer circle holes after the inner circle holes are punched. The forming of the keyboard metal shell can be completed in two times, and the punching of all keyboard holes can be completed in the same stamping equipment, thereby reducing the processing cost.

[0019] 2. In the lower punch of the present invention, the outer ring gasket and the inner ring gasket are installed by the outer frame and the inner frame, and the two are arranged one high and one low. When the inner ring hole is punched, the outer ring gasket is in a high position, leaving the keyboard slot in the inner ring, and the fixed pressure block can make the metal plate form the inner ring hole. When the outer ring hole is punched, the outer ring gasket descends with the outer frame and drives the inner ring gasket to rise. At this time, the inner ring gasket can support the metal plate, and the outer ring gasket descends to make way for the corresponding keyboard slot, and the movable pressure block can punch out the outer ring hole at this position.

[0020] 3. An air blowing structure is provided on the lower punch of the present invention, and an air flow is generated through the air port of the air blowing groove, which can blow the fragments generated by punching into the recovery groove to complete the recovery work. The air port of the air blowing groove is divided into a middle air port and a side air port, which are used to blow the fragments on the inner ring gasket and the outer ring gasket respectively. The pressure is strengthened by reducing the air port to ensure that the air flow can complete the blowing of the metal fragments, and the half cover plate can be automatically adjusted with the rise and fall of the inner ring gasket and the outer ring gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall device of the present invention.

[0022] Figure 2 It is a schematic diagram of the mold structure of the present invention.

[0023] Figure 3 It is a schematic diagram of the internal structure of the upper punch die of the present invention.

[0024] Figure 4 It is a schematic diagram of the separation state of the upper punch structure of the present invention.

[0025] Figure 5 It is a schematic diagram of the lower punch structure of the present invention.

[0026] Figure 6 It is a schematic diagram of the internal structure of the lower punch die of the present invention.

[0027] Figure 7 It is a schematic diagram of the outer ring spacer structure of the present invention.

[0028] Figure 8 It is a schematic diagram of the position structure of the outer frame and the inner frame of the present invention.

[0029] Fig. 9 It is a schematic diagram of the air blowing tank and recovery tank structure of the present invention.

[0030] Fig.10 It is a schematic diagram of the air blowing slot structure of the present invention.

[0031] Fig.11 It is a schematic diagram of the magnetic control seat structure of the present invention.

[0032] In the figure: 1, equipment body; 2, pedestal; 3, lower punch; 4, lifting platform; 5, upper punch; 6, guide rod; 7, alignment hole; 8, fixed pressure block; 9, through hole; 10, upper frame; 11, support foot; 12, first spring; 13, movable pressure block; 14, first rotating shaft; 15, deflection frame; 16, upper gear; 17, outer frame; 18, inner frame; 19, outer ring gasket; 20, inner ring gasket; 21, second spring Spring; 22. Support member; 23. Double-bevel slider; 24. Driven rack; 25. Second rotating shaft; 26. Driven gear; 27. Lower gear; 28. Slide seat; 29. ​​Drive rack; 30. Push rod; 31. Air blowing slot; 32. External pipe; 33. Recovery slot; 34. Half cover; 35. Bottom support; 36. Fixed magnetic block; 37. Magnetic seat; 38. Switching shaft; 39. Friction wheel; 40. Movable magnetic block; 41. Insert strip. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment. It should be noted that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] See also Figures 1 to 11The present invention provides a technical solution: a metal shell molding structure device for an external keyboard, comprising a device body 1, a lower punch 3 is fixedly installed on the device body 1, and an upper punch 5 is lifted and installed on the device body 1, a fixed pressing block 8 and a through hole 9 are arranged on the upper punch 5, and an upper frame 10 is movably installed in the upper punch 5, a first spring 12 is installed on the upper frame 10, and a movable pressing block 13 is arranged on the upper frame 10, and the movable pressing block 13 is located in the through hole 9, and the pressing block structure on the upper punch 5 is divided into The upper punch 5 is provided with a first rotating shaft 14, and a deflection frame 15 is installed on the first rotating shaft 14, and the deflection frame 15 is located above the upper frame 10. The lower punch 3 is provided with an outer frame 17 and an inner frame 18 for lifting and lowering the height misalignment, and an outer ring gasket 19 is installed on the outer frame 17, and an inner ring gasket 20 is installed on the inner frame 18, and a keyboard slot is provided on the lower punch 3, and the keyboard slot is connected to the fixed pressure block 8 and the movable pressure block 13. The pressing block 13 is correspondingly arranged, a second spring 21 is connected to the inner frame 18, and a support 22 is connected to both the outer frame 17 and the inner frame 18, a double-bevel slider 23 is movably installed in the lower punch 3, and the two bevels of the double-bevel slider 23 are respectively connected to the support 22 of the outer frame 17 and the inner frame 18, and the height of the outer frame 17 and the inner frame 18 is controlled by moving the double-bevel slider 23, a second rotating shaft 25 is arranged on the lower punch 3, and the second rotating shaft 25 is connected to a driven gear 26, and the outer A driven rack 24 is connected to the frame 17, a synchronous drive structure is installed on the lower punch 3, and the synchronous drive structure can synchronously drive the first rotating shaft 14 and the second rotating shaft 25, an air blowing groove 31 and a recovery groove 33 are connected to the lower punch 3, and a half cover plate 34 is movably installed on the air blowing groove 31, a middle air port and a side air port are provided on the air blowing groove 31, the half cover plate 34 can be in a position to cover the middle air port or the side air port of the air blowing groove 31, and the position of the half cover plate 34 is adjusted with the lifting and lowering of the outer frame 17.

[0035] like Figure 1 , Figure 2 As shown, the lower punch 3 is installed on the base 2 of the equipment body 1, and the upper punch 5 is installed on the lifting platform 4 of the equipment body 1. The upper punch 5 is located above the lower punch 3. A guide rod 6 is installed on the upper punch 5, and an alignment hole 7 is provided on the lower punch 3.

[0036] The present invention utilizes stamping equipment and a stamping die to form a metal shell of an external keyboard. The stamping die is composed of a lower die 3 and an upper die 5. The lower die 3 is fixed on a base 2, and the upper die 5 is installed on a lifting platform 4. The lifting platform 4 can drive the upper die 5 to move up and down. Through the process of inserting the guide rod 6 into the alignment hole 7, the upper die 5 is guided so that it can be just merged into the lower die 3 to generate pressure to complete the initial punching work.

[0037] like Figure 3 , Figure 4 As shown, the fixed pressing block 8 is installed on the lower surface of the upper punch 5, and the upper frame 10 is movably installed in the upper punch 5 through the support legs 11, the first spring 12 is installed on the support legs 11, and the movable pressing block 13 is installed on the bottom surface of the upper frame 10.

[0038] The pressure block structure on the upper punch 5 is composed of a fixed pressure block 8 and a movable pressure block 13. When the upper punch 5 is pressed down, the fixed pressure block 8 first contacts the metal plate on the lower punch 3 to form the inner circle holes, and the movable pressure block 13 retracts in the upper punch 5 through the upper frame 10. After the inner circle holes are punched, the outer circle holes are punched by pressing down the movable pressure block 13, and the forming of the keyboard metal shell is completed in two steps.

[0039] like Figure 5 , 6 As shown in Figure 8, the outer frame 17 and the inner frame 18 are installed in the lower punch 3 in a limited and movable manner, and the outer ring gasket 19 and the inner ring gasket 20 are in the keyboard groove, the second spring 21 is connected between the inner frame 18 and the lower punch 3, and the support member 22 is vertically connected to the outer frame 17 and the inner frame 18, and the double-bevel slider 23 is installed in the lower punch 3 for horizontal sliding.

[0040] In the lower punch 3, the outer ring gasket 19 and the inner ring gasket 20 are installed through the outer frame 17 and the inner frame 18, and the two are set one high and the other low. When the inner ring hole is punched, the outer ring gasket 19 is in a high position, leaving the keyboard slot in the inner ring, and the fixed pressure block 8 can make the metal plate form the inner ring hole. When the outer ring hole is punched, the outer ring gasket 19 descends with the outer frame 17, and the support member 22 on the outer frame 17 is used to push the double-bevel slider 23. When the double-bevel slider 23 moves, the support member 22 on the inner frame 18 can be pushed up through the inclined surface, so that the inner ring gasket 20 rises. At this time, the inner ring gasket 20 can support the metal plate, and the outer ring gasket 19 descends to make way for the corresponding keyboard slot, and the movable pressure block 13 punches out the outer ring hole at this position.

[0041] like Figure 7 As shown, the synchronous driving structure includes a slide 28 mounted on the side wall of the lower punch 3, and a driving rack 29 is movably mounted on the slide 28, and the driving rack 29 is pushed by a push rod 30. The two ends of the first rotating shaft 14 are respectively mounted with a deflection frame 15 and an upper gear 16, and the two ends of the second rotating shaft 25 are respectively mounted with a driven gear 26 and a lower gear 27, the lower gear 27 is meshed with the driving rack 29, and the driven gear 26 is meshed with the driven rack 24, and the upper gear 16 and the lower gear 27 are meshed when the upper punch 5 and the lower punch 3 are combined.

[0042] The second step of punching operation is completed by the synchronous drive structure. When the upper punch 5 and the lower punch 3 are combined to complete the punching of the inner ring hole, the push rod 30 pulls the driving rack 29, so that the driving rack 29 drives the lower gear 27 to rotate, and the lower gear 27 can drive the upper gear 16 to rotate synchronously. Therefore, the first rotating shaft 14 and the second rotating shaft 25 rotate synchronously. The first rotating shaft 14 drives the deflection frame 15 to rotate, and the deflection frame 15 generates pressure, so that the movable pressure block 13 is pressed down to punch, and the second rotating shaft 25 drives the driven gear 26 to rotate, and the driven rack 24 moves accordingly, driving the outer ring gasket 19 to descend and the inner ring gasket 20 to rise.

[0043] like Fig. 9 As shown, the air blowing groove 31 and the recovery groove 33 are respectively connected to the two sides of the lower punch die 3, and the air blowing groove 31 is connected to the air pump device through the external pipe 32.

[0044] The lower punch 3 of the present invention is provided with an air blowing structure, which supplies air to the air blowing groove 31 through the external pipe 32. The air port of the air blowing groove 31 generates airflow, which can blow the fragments generated by punching into the recovery groove 33 to complete the recovery work.

[0045] like Figure 10-11 As shown, the air port of the air blowing slot 31 and the recovery port of the recovery slot 33 are both arranged toward the cavity of the lower punch 3, and two half cover plates 34 are provided, and bottom brackets 35 are provided on the two half cover plates 34, and fixed magnetic blocks 36 with reversed magnetic poles are installed on the two bottom brackets 35. A magnetic base 37 is provided in the lower punch 3, and two switching shafts 38 are rotatably installed in the magnetic base 37, and friction wheels 39 and movable magnetic blocks 40 are respectively installed at both ends of the switching shaft 38, and an insert 41 is installed on the outer frame 17, and the insert 41 is connected between the two friction wheels 39, and the magnetic poles of the two movable magnetic blocks 40 are reversed.

[0046] The air inlet of the air blowing slot 31 is divided into a middle air inlet and a side air inlet, which are used to blow the fragments on the inner ring gasket 20 and the outer ring gasket 19 respectively. The pressure is increased by reducing the air inlet to ensure that the airflow can complete the blowing of the metal fragments. When the inner ring gasket 20 retracts, the half cover plates 34 are on both sides, and the airflow is blown out from the middle air inlet, which can blow the metal fragments on the inner ring gasket 20 into the recovery slot 33. When the outer ring gasket 19 descends and retracts, the insert 41 moves accordingly, which can drive the friction wheel 39 to rotate, and the switching shaft 38 rotates to reverse the direction of the movable magnetic block 40, so that the movable magnetic block 40 generates an attraction for the fixed magnetic block 36, and the two half cover plates 34 are driven to move to the middle part through the bottom support 35, and the middle air inlet is closed, so that the airflow is concentratedly blown out from the side air inlet, and the metal fragments on the outer ring gasket 19 are blown into the recovery slot 33.

[0047] A method for processing an external keyboard metal shell forming structure device, the processing method comprising the following steps:

[0048] S1, punching the inner ring hole, first positioning the metal plate on the lower punch 3, then starting the lifting platform 4, driving the upper punch 5 to move downward, the upper punch 5 merges with the lower punch 3 to generate pressure, and contacts the metal plate on the lower punch 3 through the fixed pressing block 8 to form the inner ring hole;

[0049] S2, punching the outer ring holes. After the inner ring holes are punched, the driving rack 29 is pulled by the push rod 30, so that the driving rack 29 drives the lower gear 27 to rotate, and the lower gear 27 can drive the upper gear 16 to rotate synchronously, so that the first rotating shaft 14 and the second rotating shaft 25 rotate. The first rotating shaft 14 drives the deflection frame 15 to rotate, and the pressure generated causes the movable pressure block 13 to press down to punch the holes. The second rotating shaft 25 drives the outer ring gasket 19 in the lower punch 3 to descend and the inner ring gasket 20 to rise, and cooperate with the movable pressure block 13 to punch the outer ring holes on the metal plate.

[0050] When the present invention is in use: first, the present invention utilizes stamping equipment and stamping dies to form the metal shell of the external keyboard, the stamping die is composed of a lower die 3 and an upper die 5, the lower die 3 is fixed on the base 2, and the upper die 5 is installed on the lifting platform 4, the lifting platform 4 can drive the upper die 5 to move up and down, and guide the upper die 5 through the process of inserting the guide rod 6 into the alignment hole 7, so that the upper die 5 can be just merged into the lower die 3, and pressure is generated to complete the initial punching work, the pressing block structure on the upper die 5 is composed of a fixed pressing block 8 and a movable pressing block 13, when the upper die 5 is pressed down, the fixed pressing block 8 first contacts the metal plate on the lower die 3 to form the inner circle hole, and the movable pressing block 13 is retracted in the upper die 5 through the upper frame 10, and the punching of the inner circle hole is completed. After completion, the outer ring holes are punched by pressing down the movable pressing block 13, and the forming of the keyboard metal shell is completed in two times. The outer ring gasket 19 and the inner ring gasket 20 are installed in the lower punch 3 through the outer frame 17 and the inner frame 18. The two are set one high and one low. When the inner ring hole is punched, the outer ring gasket 19 is in a high position, leaving the keyboard groove in the inner ring. The fixed pressing block 8 can form the inner ring hole on the metal plate. When the outer ring hole is punched, the outer ring gasket 19 descends with the outer frame 17, and the support member 22 on the outer frame 17 is used to push the double-bevel slider 23. When the double-bevel slider 23 moves, the support member 22 on the inner frame 18 can be pushed up through the bevel, so that the inner ring gasket 20 rises. At this time, the inner ring gasket 20 It can support the metal plate, and the outer ring gasket 19 descends to make way for the corresponding keyboard slot, and the movable pressure block 13 punches out the outer ring hole at this position, and completes the second step of punching operation through the synchronous drive structure. When the upper punch 5 and the lower punch 3 are combined to complete the punching of the inner ring hole, the push rod 30 pulls the driving rack 29, so that the driving rack 29 drives the lower gear 27 to rotate, and the lower gear 27 can drive the upper gear 16 to rotate synchronously, so that the first rotating shaft 14 and the second rotating shaft 25 rotate synchronously, and the first rotating shaft 14 drives the deflection frame 15 to rotate, and the deflection frame 15 generates pressure, so that the movable pressure block 13 is pressed down to punch, and the second rotating shaft 25 drives the driven gear 26 to rotate, and the driven rack 24 moves accordingly, driving the outer ring gasket 19 to descend and the inner ring gasket 20 The lower punch 3 rises, and an air blowing structure is provided on the lower punch 3. Air is supplied to the air blowing slot 31 through the external pipe 32. The air port of the air blowing slot 31 generates airflow, which can blow the fragments generated by punching into the recovery slot 33 to complete the recovery work. The air port of the air blowing slot 31 is divided into a middle air port and a side air port, which respectively blow the fragments on the inner ring gasket 20 and the outer ring gasket 19. The pressure is increased by reducing the air port to ensure that the airflow can complete the blowing of the metal fragments. When the inner ring gasket 20 retracts, the half cover plate 34 is on both sides, and the airflow is blown out from the middle air port, which can blow the metal fragments on the inner ring gasket 20 into the recovery slot 33. When the outer ring gasket 19 descends and retracts, the insert 41 moves accordingly, which can drive the friction wheel 39 to rotate, and the switching shaft 38 rotates to reverse the direction of the movable magnetic block 40.The movable magnetic block 40 generates attraction to the fixed magnetic block 36, and the two half cover plates 34 are driven to move to the middle through the bottom bracket 35, so that the middle air port is closed, and the air flow is concentrated and blown out from the side air port, blowing the metal fragments on the outer ring gasket 19 into the recovery tank 33.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal shell molding structure device for an external keyboard, comprising a device body (1), characterized in that: A lower punch (3) is fixedly mounted on the device body (1), and an upper punch (5) is lifted and mounted on the device body (1), a fixed pressure block (8) and a through hole (9) are arranged on the upper punch (5), and an upper frame (10) is movably mounted in the upper punch (5), a first spring (12) is mounted on the upper frame (10), and a movable pressure block (13) is arranged on the upper frame (10), the movable pressure block (13) is located in the through hole (9), and the pressure block structure on the upper punch (5) is divided into a fixed pressure block (8) and a movable pressure block (13), and the fixed pressure block (8) is located in the movable pressure block (13). The upper punch (5) is provided with a first rotating shaft (14), and a deflection frame (15) is installed on the first rotating shaft (14), and the deflection frame (15) is located above the upper frame (10). The lower punch (3) is provided with an outer frame (17) and an inner frame (18) for lifting and lowering the height difference, and an outer ring gasket (19) is installed on the outer frame (17), and an inner ring gasket (20) is installed on the inner frame (18). The lower punch (3) is provided with a keyboard slot, and the keyboard slot is correspondingly arranged with the fixed pressure block (8) and the movable pressure block (13). The inner frame (18 ) is connected to a second spring (21), and the outer frame (17) and the inner frame (18) are both connected to a support member (22), a double-bevel slider (23) is movably installed in the lower punch (3), and the two bevels of the double-bevel slider (23) are respectively connected to the support members (22) of the outer frame (17) and the inner frame (18), and the height of the outer frame (17) and the inner frame (18) is controlled by moving the double-bevel slider (23), a second rotating shaft (25) is provided on the lower punch (3), and the second rotating shaft (25) is connected to a driven gear (26), and the outer frame (17) ) is connected to a driven rack (24), a synchronous driving structure is installed on the lower punch (3), and the synchronous driving structure can synchronously drive the first rotating shaft (14) and the second rotating shaft (25), the lower punch (3) is connected to an air blowing groove (31) and a recovery groove (33), and a half cover plate (34) is movably installed on the air blowing groove (31), the air blowing groove (31) is provided with a middle air port and a side air port, the half cover plate (34) can be in a position to cover the middle air port or the side air port of the air blowing groove (31), and the position of the half cover plate (34) is adjusted as the outer frame (17) rises and falls.

2. The metal shell forming structure device for an external keyboard according to claim 1, characterized in that: The lower punch (3) is mounted on a pedestal (2) of the equipment body (1), and the upper punch (5) is mounted on a lifting platform (4) of the equipment body (1), the upper punch (5) is located above the lower punch (3), a guide rod (6) is mounted on the upper punch (5), and an alignment hole (7) is provided on the lower punch (3).

3. The metal shell forming structure device for an external keyboard according to claim 1, characterized in that: The fixed pressure block (8) is mounted on the lower surface of the upper punch (5), and the upper frame (10) is mounted in the upper punch (5) through the support legs (11) to limit movement, the first spring (12) is mounted on the support legs (11), and the movable pressure block (13) is mounted on the bottom surface of the upper frame (10).

4. The metal shell forming structure device for an external keyboard according to claim 1, characterized in that: The outer frame (17) and the inner frame (18) are movably installed in the lower punch (3) in a limited manner, and the outer ring pad (19) and the inner ring pad (20) are located in the keyboard groove. The second spring (21) is connected between the inner frame (18) and the lower punch (3), and the support member (22) is vertically connected to the outer frame (17) and the inner frame (18). The double-bevel slider (23) is horizontally slidably installed in the lower punch (3).

5. The metal shell forming structure device for an external keyboard according to claim 1, characterized in that: The synchronous drive structure comprises a slide seat (28) mounted on the side wall of the lower punch (3), and a driving rack (29) is movably mounted on the slide seat (28), and the driving rack (29) is pushed by a push rod (30).

6. The metal shell forming structure device for an external keyboard according to claim 5, characterized in that: A deflection frame (15) and an upper gear (16) are respectively mounted on both ends of the first rotating shaft (14), and a driven gear (26) and a lower gear (27) are respectively mounted on both ends of the second rotating shaft (25), the lower gear (27) is meshed with a driving rack (29), and the driven gear (26) is meshed with a driven rack (24), and the upper gear (16) and the lower gear (27) are meshed when the upper punch (5) and the lower punch (3) are combined.

7. The metal shell forming structure device for an external keyboard according to claim 1, characterized in that: The air blowing groove (31) and the recovery groove (33) are respectively connected to the two sides of the lower punch die (3), and the air blowing groove (31) is connected to the air pump device through an external pipe (32).

8. The metal shell forming structure device for an external keyboard according to claim 7, characterized in that: The air port of the air blowing groove (31) and the recovery port of the recovery groove (33) are both arranged toward the cavity of the lower punch (3), and two half cover plates (34) are provided, and bottom brackets (35) are provided on the two half cover plates (34), and fixed magnetic blocks (36) with opposite magnetic poles are installed on the two bottom brackets (35).

9. The metal shell forming structure device for an external keyboard according to claim 8, characterized in that: A magnetic base (37) is provided in the lower punch (3), and two switching shafts (38) are rotatably mounted in the magnetic base (37), friction wheels (39) and movable magnetic blocks (40) are respectively mounted at both ends of the switching shaft (38), and an inserting strip (41) is mounted on the outer frame (17), and the inserting strip (41) is connected between the two friction wheels (39), and the magnetic poles of the two movable magnetic blocks (40) are arranged in opposite directions.

10. A method for processing a metal shell forming structure device for an external keyboard as claimed in any one of claims 1 to 9, characterized in that: The processing method comprises the following steps: S1, punching the inner ring hole, first positioning the metal plate on the lower punch (3), then starting the lifting platform (4), driving the upper punch (5) to move downward, the upper punch (5) merges with the lower punch (3) to generate pressure, and contacts the metal plate on the lower punch (3) through the fixed pressure block (8), so as to form the inner ring hole; S2, punching the outer ring hole. After the inner ring hole is punched, the driving rack (29) is pulled by the push rod (30), so that the driving rack (29) drives the lower gear (27) to rotate, and the lower gear (27) can drive the upper gear (16) to rotate synchronously, so that the first rotating shaft (14) and the second rotating shaft (25) rotate. The first rotating shaft (14) drives the deflection frame (15) to rotate, and the pressure generated causes the movable pressure block (13) to press down to punch the hole. The second rotating shaft (25) drives the outer ring gasket (19) in the lower punch (3) to descend and the inner ring gasket (20) to rise, and cooperates with the movable pressure block (13) to punch the outer ring hole on the metal plate.

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