Punching die device for computer case

Abstract

The invention belongs to the technical field of computer case machining equipment, and particularly relates to a computer case die punching device which comprises a rack, a rotary driving mechanism, a transmission mechanism, a swing mechanism, a lifting mechanism, a punching mechanism and a workbench. The swing mechanism is connected with the transmission mechanism and the lifting mechanism, the lifting mechanism is fixed to the rack, the punching mechanism is fixed to the lifting mechanism, and the workbench is fixed to the rack and arranged below the punching mechanism. According to the punching die device for the computer case, motion conversion is achieved through an eccentric wheel-swing rod mechanism, according to the motion principle of an eccentric mechanism, the reciprocating stroke of the punching mechanism is only two times of the eccentric distance, and compared with the stroke of a traditional hydraulic piston rod, the stroke is shortened; and in cooperation with the high-frequency response characteristic of gear transmission, the time consumption of single punching circulation is shortened, and the punching machining efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of computer chassis processing equipment, and particularly relates to a computer chassis stamping die device. Background Technology

[0002] In the manufacturing process of computer chassis, die stamping is one of the key steps, mainly used to perform forming operations such as punching holes and trimming edges on the chassis shell. Currently, the industry commonly uses hydraulically driven die stamping devices, whose core structure consists of a hydraulic pump, a hydraulic piston rod, and a punching head. The working principle is that the hydraulic pump outputs high-pressure oil to drive the piston rod to perform reciprocating linear motion, which in turn drives the punching head to punch the chassis sheet metal.

[0003] The reciprocating motion of the hydraulic piston rod in a traditional hydraulically driven punching die device relies on the alternating input and output of hydraulic oil. Its stroke is determined by the length of the cylinder. Sufficient unloaded stroke is usually required to ensure punching safety, resulting in a low proportion of effective working time in a single punching cycle and a low effective stroke of the piston rod, which reduces punching efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a computer chassis stamping die device, which aims to solve the technical problem that the effective stroke of the hydraulic piston rod in the traditional hydraulically driven stamping die device is low, thus reducing the stamping efficiency.

[0005] To achieve the above objectives, the computer chassis punching die device provided in this embodiment of the invention includes a frame, a rotary drive mechanism, a transmission mechanism, a swing mechanism, a lifting mechanism, a punching mechanism, and a worktable. The rotary drive mechanism is fixed to the frame, the transmission mechanism is connected to the rotary drive mechanism and the swing mechanism respectively, the swing mechanism is connected to the transmission mechanism and the lifting mechanism respectively, the lifting mechanism is fixed to the frame, the punching mechanism is fixed to the lifting mechanism, and the worktable is fixed to the frame and disposed below the punching mechanism.

[0006] As an optional embodiment of the present invention, the rotary drive mechanism includes a motor plate, a drive motor, a drive shaft, a drive pulley, a drive belt, a driven pulley, a driven shaft, and a driven gear. The motor plate is fixed inside the frame, the drive motor is fixed to the motor plate, one end of the drive shaft is fixed to the drive motor, and the other end is fixed to the frame. The drive pulley is fixed to one end of the drive shaft, and the drive belt is fixedly wound around the drive pulley and the driven pulley respectively. The driven shaft is fixed to the frame, the driven pulley is fixed to one end of the driven shaft, and the driven gear is fixed to the other end of the driven shaft.

[0007] As an optional embodiment of the present invention, the transmission mechanism includes a primary transmission assembly and a secondary transmission assembly. The primary transmission assembly is connected to the rotary drive mechanism and the secondary transmission assembly respectively, and the secondary transmission assembly is connected to the swing mechanism. The primary transmission assembly includes a primary transmission gear, a primary transmission shaft, and a primary counterweight wheel. The primary transmission gear meshes with the driven gear. The primary transmission shaft is fixed to the frame. The primary transmission gear is fixed to one end of the primary transmission shaft, and the primary counterweight wheel is fixed to the other end of the primary transmission shaft.

[0008] As an optional embodiment of the present invention, the secondary transmission assembly includes a secondary transmission gear, a secondary transmission shaft, a driving eccentric wheel, a driven eccentric wheel, an eccentric shaft, and a secondary rotating shaft. The primary transmission gear meshes with the driven gear and the secondary transmission gear respectively. The secondary transmission shaft is fixed to the frame. The secondary transmission gear is fixed to one end of the secondary transmission shaft, and the middle part of the driving eccentric wheel is fixed to the other end of the secondary transmission shaft. The eccentric shaft is sequentially fixed through the edges of the driving eccentric wheel and the driven eccentric wheel and is fixed to the frame. The middle part of the driven eccentric wheel is fixed to the secondary rotating shaft, and the secondary rotating shaft is fixed to the frame.

[0009] As an optional embodiment of the present invention, the diameters of the driven gear, the first-stage transmission gear, and the second-stage transmission gear increase sequentially.

[0010] As an optional embodiment of the present invention, the swing mechanism includes an eccentric swing rod, an eccentric slider, and an eccentric fixed seat. One end of the eccentric swing rod is fixed to the eccentric shaft, and the other end is fixed to the eccentric slider. The eccentric slider is slidably connected to the eccentric fixed seat and connected to the lifting mechanism. The eccentric fixed seat is fixed to the frame.

[0011] As an optional embodiment of the present invention, the lifting mechanism includes a connecting arm, a lower swing arm, a lower fixed shaft, an upper swing arm, and an upper fixed shaft. One end of the connecting arm is hinged to the eccentric slider, and the other end is hinged to the lower swing arm and the upper swing arm respectively. The lower swing arm is fixed to the lower fixed shaft, and the lower fixed shaft is fixed to the punching mechanism. The upper swing arm is fixed to the upper fixed shaft, and the upper fixed shaft is fixed to the frame. Both the lower swing arm and the upper swing arm are C-shaped.

[0012] As an optional embodiment of the present invention, the punching mechanism includes a punching seat, a punching blade, and a punch, the lower fixed shaft is fixed to the punching seat, the punching blade and the punch are sequentially fixed to the punching seat, and the punching seat is disposed above the worktable.

[0013] The computer chassis stamping die device provided in this embodiment of the invention has at least one of the following technical effects:

[0014] The computer chassis punching die device provided in this application uses an eccentric wheel-rocker mechanism to achieve motion conversion. According to the motion principle of the eccentric mechanism, the reciprocating stroke of the punching mechanism is only twice the eccentric distance, which is shorter than the stroke of the traditional hydraulic piston rod. Combined with the high-frequency response characteristics of gear transmission, the time consumed in a single punching cycle is shortened, thus improving the punching efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a perspective view of the computer chassis stamping die device provided in an embodiment of the present invention.

[0017] Figure 2 This is a perspective view of the computer chassis stamping die device provided in an embodiment of the present invention, omitting the frame.

[0018] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0019] Figure 4 This is a perspective view of the computer chassis stamping die device provided in an embodiment of the present invention, omitting the frame.

[0020] Figure 5 This is a perspective view of the computer chassis stamping die device provided in an embodiment of the present invention, omitting the frame.

[0021] The following are the labeling elements in the figure:

[0022] 1. Frame; 2. Rotary drive mechanism; 3. Primary transmission assembly; 4. Secondary transmission assembly; 5. Swinging mechanism; 6. Lifting mechanism; 7. Punching mechanism; 8. Worktable;

[0023] 21. Motor board; 22. Drive motor; 23. Drive shaft; 24. Drive pulley; 25. Drive belt; 26. Driven pulley; 27. Driven shaft; 28. Driven gear;

[0024] 31. First-stage transmission gear; 32. First-stage transmission shaft; 33. First-stage counterweight wheel;

[0025] 41. Secondary transmission gear; 42. Secondary transmission shaft; 43. Driving eccentric wheel; 44. Driven eccentric wheel; 45. Eccentric shaft; 46. Secondary rotating shaft;

[0026] 51. Eccentric rocker arm; 52. Eccentric slider; 53. Eccentric mounting base;

[0027] 61. Connecting arm; 62. Lower swing arm; 63. Lower fixed shaft; 64. Upper swing arm; 65. Upper fixed shaft;

[0028] 71. Punch seat; 72. Punch cutter; 73. Punch. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0030] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and 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. Therefore, they should not be construed as limitations on the present invention.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0033] In one embodiment of the present invention, such as Figures 1-5As shown, a computer chassis punching die device is provided, including a frame 1, a rotary drive mechanism 2, a transmission mechanism, a swing mechanism 5, a lifting mechanism 6, a punching mechanism 7, and a worktable 8. The rotary drive mechanism 2 is fixed to the frame 1. The transmission mechanism is connected to the rotary drive mechanism 2 and the swing mechanism 5 respectively. The swing mechanism 5 is connected to the transmission mechanism and the lifting mechanism 6 respectively. The lifting mechanism 6 is fixed to the frame 1. The punching mechanism 7 is fixed to the lifting mechanism 6. The worktable 8 is fixed to the frame 1 and is located below the punching mechanism 7.

[0034] In another embodiment of the present invention, the rotary drive mechanism 2 includes a motor plate 21, a drive motor 22, a drive shaft 23, a drive pulley 24, a drive belt 25, a driven pulley 26, a driven shaft 27, and a driven gear 28. The motor plate 21 is fixed inside the frame 1, the drive motor 22 is fixed to the motor plate 21, one end of the drive shaft 23 is fixed to the drive motor 22, and the other end is fixed to the frame 1. The drive pulley 24 is fixed to one end of the drive shaft 23, and the drive belt 25 is fixedly wound around the drive pulley 24 and the driven pulley 26 respectively. The driven shaft 27 is fixed to the frame 1, the driven pulley 26 is fixed to one end of the driven shaft 27, and the driven gear 28 is fixed to the other end of the driven shaft 27.

[0035] When the drive motor 22 is powered on, it outputs rotational power. The drive motor 22 drives the drive shaft 23 to rotate synchronously through the coupling. The drive pulley 24, which is fixed to one end of the drive shaft 23, rotates together with the drive shaft 23. The drive pulley 24 transmits power to the driven pulley 26 through a V-belt, realizing flexible power transmission. The driven pulley 26 is keyed to the driven shaft 27, driving the driven shaft 27 to rotate around the bearing seat on the frame 1. The driven gear 28, which is fixed to the other end of the driven shaft 27, rotates synchronously with the driven shaft 27, completing the power output and providing rotational driving force for the subsequent transmission mechanism.

[0036] In another embodiment of the present invention, the transmission mechanism includes a primary transmission assembly 3 and a secondary transmission assembly 4. The primary transmission assembly 3 is connected to the rotary drive mechanism 2 and the secondary transmission assembly 4, respectively, and the secondary transmission assembly 4 is connected to the swing mechanism 5. The primary transmission assembly 3 includes a primary transmission gear 31, a primary transmission shaft 32, and a primary counterweight wheel 33. The primary transmission gear 31 is meshed with the driven gear 28. The primary transmission shaft 32 is fixed to the frame 1. The primary transmission gear 31 is fixed to one end of the primary transmission shaft 32, and the primary counterweight wheel 33 is fixed to the other end of the primary transmission shaft 32.

[0037] In another embodiment of the present invention, the secondary transmission assembly 4 includes a secondary transmission gear 41, a secondary transmission shaft 42, a driving eccentric wheel 43, a driven eccentric wheel 44, an eccentric shaft 45, and a secondary rotating shaft 46. The primary transmission gear 31 is meshed with the driven gear 28 and the secondary transmission gear 41 respectively. The secondary transmission shaft 42 is fixed to the frame 1. The secondary transmission gear 41 is fixed to one end of the secondary transmission shaft 42. The middle part of the driving eccentric wheel 43 is fixed to the other end of the secondary transmission shaft 42. The eccentric shaft 45 is sequentially fixed through the edges of the driving eccentric wheel 43 and the driven eccentric wheel 44 and fixed to the frame 1. The middle part of the driven eccentric wheel 44 is fixed to the secondary rotating shaft 46, and the secondary rotating shaft 46 is fixed to the frame 1.

[0038] The driven gear 28 of the rotary drive mechanism 2 rotates and meshes with the primary transmission gear 31, driving the primary transmission shaft 32 and the primary counterweight wheel 33 (to balance inertial force) at one end to rotate synchronously; the primary transmission gear 31 simultaneously meshes with the secondary transmission gear 41, driving the secondary transmission shaft 42 to rotate, which in turn drives the active eccentric wheel 43 at the other end of the secondary transmission shaft 42 to rotate; the active eccentric wheel 43 drives the driven eccentric wheel 44 to swing around the secondary rotating shaft 46 through the eccentric shaft 45 through the edge, and finally transmits the power to the eccentric swing rod 51 of the swing mechanism 5 through the eccentric shaft 45, completing the conversion of rotational power to swinging power.

[0039] In another embodiment of the present invention, the diameters of the driven gear 28, the primary transmission gear 31, and the secondary transmission gear 41 increase sequentially to form a multi-stage reduction structure. By using the meshing method of the small gear driving the large gear, the transmission speed is gradually reduced, and the high-speed rotation of the drive motor 22 is converted into the low-speed and stable rotation of the secondary transmission gear 41. This adapts to the reciprocating motion requirements of the punching mechanism 7. According to the principle of gear transmission torque transmission, the output torque is proportional to the gear diameter. The diameter-increasing design makes the output torque of the secondary transmission gear 41 higher than the input torque of the drive motor 22, ensuring that the punching force is stable at 8-10kN, which meets the punching strength requirements of the chassis sheet.

[0040] In another embodiment of the present invention, the swing mechanism 5 includes an eccentric swing rod 51, an eccentric slider 52, and an eccentric fixed seat 53. One end of the eccentric swing rod 51 is fixed to the eccentric shaft 45, and the other end is fixed to the eccentric slider 52. The eccentric slider 52 is slidably connected to the eccentric fixed seat 53 and connected to the lifting mechanism 6. The eccentric fixed seat 53 is fixed to the frame 1. The driven eccentric wheel 44 of the transmission mechanism drives the eccentric shaft 45 to swing. One end of the eccentric swing rod 51 swings synchronously with the eccentric shaft 45, and the other end pulls the eccentric slider 52. The eccentric slider 52 slides horizontally back and forth along the guide rail of the eccentric fixed seat 53, converting the swing motion into linear reciprocating motion. The reciprocating eccentric slider 52 is hinged to the connecting arm 61 of the lifting mechanism 6, providing driving power for the lifting mechanism 6.

[0041] In another embodiment of the present invention, the lifting mechanism 6 includes a connecting arm 61, a lower swing arm 62, a lower fixed shaft 63, an upper swing arm 64, and an upper fixed shaft 65. One end of the connecting arm 61 is hinged to the eccentric slider 52, and the other end is hinged to the lower swing arm 62 and the upper swing arm 64 respectively. The lower swing arm 62 is fixed to the lower fixed shaft 63, and the lower fixed shaft 63 is fixed to the punching mechanism 7. The upper swing arm 64 is fixed to the upper fixed shaft 65, and the upper fixed shaft 65 is fixed to the frame 1. Both the lower swing arm 62 and the upper swing arm 64 are C-shaped. The eccentric slider 52 of the swing mechanism 5 slides up and down, driving the connecting arm 61 to move synchronously through the hinge; the connecting arm 61 pulls the upper swing arm 64 to swing synchronously around the upper fixed shaft 65 and the lower swing arm 62 around the lower fixed shaft 63; since the lower swing arm 62 and the upper swing arm 64 are both C-shaped, the lower swing arm 62 converts the swing motion into the up and down reciprocating lifting motion of the punching mechanism 7 through the lower fixed shaft 63, and the upper swing arm 64 converts the swing motion into the up and down reciprocating lifting motion of the punching mechanism 7 through the upper fixed shaft 65, ultimately driving the punching seat 71, the punching blade 72, and the punch 73 to achieve precise lifting and lowering, completing the feeding and resetting of the punching operation.

[0042] In another embodiment of the present invention, the punching mechanism 7 includes a punching seat 71, a punching blade 72, and a punch 73. A lower fixed shaft 63 is fixed to the punching seat 71, and the punching blade 72 and the punch 73 are sequentially fixed to the punching seat 71. The punching seat 71 is disposed above the worktable 8. The lower swing arm 62 of the lifting mechanism 6 drives the punching seat 71 to move up and down synchronously through the lower fixed shaft 63. The computer chassis plate is fixed by the positioning pin of the worktable 8, and the clearance hole on the surface of the worktable 8 is aligned with the punching blade 72 and the punch 73. When the punching seat 71 descends, the punching blade 72 at the bottom contacts the plate first to complete the edge cutting, and simultaneously drives the punch 73 to achieve hole punching. After punching is completed, the punching seat 71 rises and resets with the lifting mechanism 6, completing a single punching process and waiting for the next cycle.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A computer chassis stamping die device, characterized in that, The device includes a frame, a rotary drive mechanism, a transmission mechanism, a swing mechanism, a lifting mechanism, a punching mechanism, and a worktable. The rotary drive mechanism is fixed to the frame. The transmission mechanism is connected to both the rotary drive mechanism and the swing mechanism. The swing mechanism is connected to both the transmission mechanism and the lifting mechanism. The lifting mechanism is fixed to the frame. The punching mechanism is fixed to the lifting mechanism. The worktable is fixed to the frame and positioned below the punching mechanism.

2. The computer chassis stamping die device according to claim 1, characterized in that, The rotary drive mechanism includes a motor plate, a drive motor, a drive shaft, a drive pulley, a drive belt, a driven pulley, a driven shaft, and a driven gear. The motor plate is fixed inside the frame, the drive motor is fixed to the motor plate, one end of the drive shaft is fixed to the drive motor, and the other end is fixed to the frame. The drive pulley is fixed to one end of the drive shaft, and the drive belt is fixedly wound around the drive pulley and the driven pulley respectively. The driven shaft is fixed to the frame, the driven pulley is fixed to one end of the driven shaft, and the driven gear is fixed to the other end of the driven shaft.

3. The computer chassis stamping die device according to claim 2, characterized in that, The transmission mechanism includes a primary transmission assembly and a secondary transmission assembly. The primary transmission assembly is connected to the rotary drive mechanism and the secondary transmission assembly, respectively, and the secondary transmission assembly is connected to the swing mechanism. The primary transmission assembly includes a primary transmission gear, a primary transmission shaft, and a primary counterweight wheel. The primary transmission gear meshes with the driven gear. The primary transmission shaft is fixed to the frame. The primary transmission gear is fixed to one end of the primary transmission shaft, and the primary counterweight wheel is fixed to the other end of the primary transmission shaft.

4. The computer chassis stamping die device according to claim 3, characterized in that, The secondary transmission assembly includes a secondary transmission gear, a secondary transmission shaft, a driving eccentric wheel, a driven eccentric wheel, an eccentric shaft, and a secondary rotating shaft. The primary transmission gear meshes with the driven gear and the secondary transmission gear, respectively. The secondary transmission shaft is fixed to the frame. The secondary transmission gear is fixed to one end of the secondary transmission shaft, and the middle of the driving eccentric wheel is fixed to the other end of the secondary transmission shaft. The eccentric shaft is sequentially fixed through the edges of the driving eccentric wheel and the driven eccentric wheel and is fixed to the frame. The middle of the driven eccentric wheel is fixed to the secondary rotating shaft, and the secondary rotating shaft is fixed to the frame.

5. A computer chassis stamping die device according to claim 4, characterized in that, The diameters of the driven gear, the first-stage transmission gear, and the second-stage transmission gear increase sequentially.

6. A computer chassis stamping die device according to claim 4, characterized in that, The swing mechanism includes an eccentric swing rod, an eccentric slider, and an eccentric fixed seat. One end of the eccentric swing rod is fixed to the eccentric shaft, and the other end is fixed to the eccentric slider. The eccentric slider is slidably connected to the eccentric fixed seat and connected to the lifting mechanism. The eccentric fixed seat is fixed to the frame.

7. A computer chassis stamping die device according to claim 6, characterized in that, The lifting mechanism includes a connecting arm, a lower swing arm, a lower fixed shaft, an upper swing arm, and an upper fixed shaft. One end of the connecting arm is hinged to the eccentric slider, and the other end is hinged to the lower swing arm and the upper swing arm respectively. The lower swing arm is fixed to the lower fixed shaft, and the lower fixed shaft is fixed to the punching mechanism. The upper swing arm is fixed to the upper fixed shaft, and the upper fixed shaft is fixed to the frame. Both the lower swing arm and the upper swing arm are C-shaped.

8. A computer chassis stamping die device according to claim 7, characterized in that, The punching mechanism includes a punching seat, a punching blade, and a punch. The lower fixed shaft is fixed to the punching seat, and the punching blade and the punch are sequentially fixed to the punching seat. The punching seat is located above the worktable.

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