High-speed precise stamping device for mobile phone shielding case

Abstract

The invention belongs to the field of stamping machining of shielding cases, and particularly relates to a high-speed precise stamping device for a mobile phone shielding case, which solves the problem that an existing stamping device for machining the mobile phone shielding case in the prior art cannot perform automatic feeding and automatic demolding and discharging, and comprises a fixed plate and a connecting frame, a supporting seat is fixedly welded to the bottom end face of the fixing plate, a supporting rod is fixedly welded to the top end face of the fixing plate, a top plate is fixedly welded to the top end of the supporting rod, a mounting plate is fixedly welded to the supporting rod, an automatic feeding and discharging assembly is mounted on the top plate, and a multifunctional demolding assembly is mounted in the connecting frame. Full-automatic positioning feeding work of the stamping device can be achieved through the automatic feeding and discharging assembly, the automation degree of the stamping device is effectively improved, then the working efficiency of the stamping device is improved, automatic demolding work of the shielding case can be automatically completed in cooperation with the multifunctional demolding assembly, and the production efficiency is improved. And the working efficiency of the stamping device is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of shielding cover stamping processing, in particular to a high-speed precision stamping device for a mobile phone shielding cover. Background Art

[0002] A mobile phone shielding cover is a protective device that surrounds interference sources of components, assemblies or the entire system through its own shielding body to prevent the interference electromagnetic field from spreading outward, and shields various electromagnetic devices by isolating the on-board devices, thereby minimizing crosstalk and sensitivity without affecting the system's operating speed. During the production and processing of mobile phone shielding covers, a stamping device is required to stamp the raw metal sheet into the required shape.

[0003] However, the existing stamping devices for the production and processing of mobile phone shielding covers have some problems in the actual working process. For example, a shielding cover stamping die with a publication number of CN117960872B can perform batch stamping and automatic demoulding during the working process, but it is not capable of convenient and stable automatic loading and unloading. After the workpiece is demoulded, the staff still needs to manually assist in unloading, which has low work efficiency and high labor intensity; and in the actual working process, it is not possible to automatically lubricate the inside of the stamping die. Therefore, during the stamping process of the metal sheet raw material, friction and wear are very likely to occur between the metal sheet raw material and the die, which leads to low processing smoothness of the mobile phone shielding cover and great difficulty in subsequent demoulding, which can easily lead to errors in the processing of the mobile phone shielding cover or unqualified products, and has poor practicality. Summary of the invention

[0004] The technical problem solved by the present invention is that the existing stamping devices for producing and processing mobile phone shielding covers cannot perform convenient and stable automatic loading and automatic demolding and unloading operations during actual working processes, and cannot automatically lubricate the inside of the stamping die. Therefore, it is necessary to provide a high-speed and precise stamping device for mobile phone shielding covers.

[0005] In order to solve the above technical problems, the present invention provides a high-speed precision stamping device for a mobile phone shielding cover, comprising a fixing plate and a connecting frame, a supporting seat is welded and fixed on the bottom end surface of the fixing plate, a supporting rod is welded and fixed on the top end surface of the fixing plate, a top plate is welded and fixed on the top end of the supporting rod, a mounting plate is welded and fixed on the supporting rod, an automatic loading and unloading assembly is installed on the top plate, a second unloading trough is opened through the bottom of the connecting frame, a multifunctional demoulding assembly is installed in the connecting frame, a third unloading trough is opened through the fixing plate, and a welding A fixing frame is fixed, a supporting plate is welded and fixed on the side end surface of the mounting plate, a loading frame is welded and fixed on the side end surface of the top plate, a hydraulic rod is installed on the top plate, a second positioning frame is installed and fixed on the bottom end of the hydraulic rod, a second return spring is welded and fixed on the side end surface of the second positioning frame, a second clamping rod is welded and fixed on the other end of the second return spring, the second clamping rod is slidably connected in the second positioning frame, an upper template is slidably connected in the second positioning frame, a second clamping groove is opened at the side end of the upper template, and the end of the second clamping rod is clamped and connected in the second clamping groove.

[0006] Preferably, a magnetic frame is fixedly connected to the bottom end surface of the fixed plate, a collecting box is magnetically adsorbed and connected inside the magnetic frame, a universal wheel is installed on the bottom end surface of the collecting box, two magnetic frames are provided, and the two magnetic frames are symmetrically distributed on the left and right sides of the bottom of the fixed plate, the magnetic frames correspond to the collecting boxes one by one, the outer wall of the collecting box is fitted with the inner wall of the magnetic frame, the top surface of the collecting box is fitted with the bottom end surface of the fixed plate, a conveying device is installed on the bottom end surface of the fixed plate, two conveying devices are provided, and the two conveying devices are symmetrically distributed on the front and back sides of the bottom of the fixed plate.

[0007] Preferably, the automatic loading and unloading assembly includes a servo motor, the servo motor is welded and fixed on the top surface of the fixed plate, the first limit plate and the connecting rod are welded and fixed on the output shaft of the servo motor, the first lever is welded and fixed on the connecting rod, the bottom end surface of the fixed plate is rotatably connected with a rotating shaft, a first driven shaft and a second driven shaft, a second limit plate, a second lever and a first gear are welded and fixed on the rotating shaft, the side end surface of the first limit plate is in contact with the side end surface of the second limit plate, the side end surface of the second limit plate is in an arc shape, four second levers are arranged, and the four second levers are distributed at equal angles on the rotating shaft, the first limit plate is provided with a groove, the groove on the first limit plate is in the same direction as the connecting rod, and the length of the groove on the first limit plate is greater than the length of the second limit plate.

[0008] Preferably, the first gear is meshed with the second gear, the second gear is welded and fixed on the first driven shaft, synchronous wheels are welded and fixed on both the first driven shaft and the second driven shaft, a synchronous belt is connected to the synchronous wheel, a turntable is welded and fixed on the bottom end of the second driven shaft, a transfer trough is opened through the turntable, and a first material discharge trough is opened through the mounting plate.

[0009] Preferably, the circumference of the first gear is equal to twice the circumference of the second gear, the diameter of the synchronous wheel is larger than the diameter of the hydraulic rod, the second driven shaft is connected to the center of the turntable, the bottom end surface of the turntable, the top end surface of the mounting plate and the top end surface of the support plate are located on the same horizontal plane, the transfer troughs are symmetrically distributed on both sides of the turntable, the length and width of the transfer troughs are respectively equal to the length and width of the first discharge trough, and the first discharge troughs are symmetrically distributed on the left and right sides of the mounting plate.

[0010] Preferably, the multifunctional demolding assembly includes a first guide rod, a second guide rod and a first positioning frame, both ends of the first guide rod and the second guide rod are welded and fixed with baffles, the bottom of the baffle is welded and fixed to the inner bottom end surface of the connecting frame, one end of the first positioning frame is welded and fixed with a first sliding block, the other end of the first positioning frame is welded and fixed with a second sliding block, the first sliding block is slidably connected to the first guide rod, and the second sliding block is slidably connected to the second guide rod, the side end surface of the first sliding block and the side end surface of the second sliding block are welded and fixed with a first connecting spring, the other end of the first connecting spring is welded and fixed to the baffle, the side end surface of the first positioning frame is welded and fixed with a first return spring, the other end of the first return spring is welded and fixed with a first clamping rod, a lower template is slidably connected in the first positioning frame, a first clamping groove is provided at the side end of the lower template, and the end of the first clamping rod is clamped and connected in the first clamping groove.

[0011] Preferably, the shape and size of the first guide rod are the same as those of the second guide rod, four groups of the first positioning frames are arranged, and the four groups of first positioning frames are distributed at equal angles in the connecting frame, two first positioning frames are arranged in each group, and the two first positioning frames are symmetrically distributed, and the first sliding blocks on the two first positioning frames are symmetrically distributed on both sides of the first guide rod, and the second sliding blocks on the two first positioning frames are symmetrically distributed on both sides of the second guide rod, the first positioning frame corresponds to the lower template one by one, the sum of the lengths of the two lower templates is less than the length of the second blanking trough, and the width of the second blanking trough is greater than the width of the lower template, the bottom end face of the first positioning frame is in contact with the inner bottom end face of the connecting frame, and the side end face of the lower template is flush with the side end face of the first positioning frame, and the first clamping rods are symmetrically distributed on both sides of the first positioning frame, and the first clamping rods correspond to the first clamping groove one by one.

[0012] Preferably, the second sliding block is fixedly connected with a first traction rope, the first traction rope is limitedly slidably connected to the guide wheel, the bottom end of the guide wheel is installed and fixed on the inner bottom end surface of the connecting frame, the other end of the first traction rope is fixedly connected with a traction plate, the bottom end of the traction plate is welded and fixed with a guide plate, the guide plate penetrates and is slidably connected to the bottom of the connecting frame, the front and rear sides of the fixed plate are penetrated with guide grooves, the guide plate is limitedly slidably connected in the guide grooves, a liquid storage frame is welded and fixed in the connecting frame, the first traction ropes are symmetrically distributed on both sides of the bottom of the traction plate, the first traction ropes correspond to the second sliding blocks one by one, and the cross-section of the guide plate is a right-angle trapezoid.

[0013] Preferably, a fixed tube is connected to the top side end of the liquid storage frame, a solenoid valve is installed on the fixed tube, a connecting tube is welded and fixed on the liquid storage frame, a small nozzle is installed on the connecting tube, the end of the connecting tube is connected to a conveying cylinder, a spiral rod is rotatably connected in the conveying cylinder, a coil is welded and fixed on the top of the spiral rod, a second traction rope is wound on the coil, the second traction rope passes through and is slidably connected to the top side end of the liquid storage frame, the end of the second traction rope is fixedly connected to the first positioning frame side end, the connecting tube passes through and is slidably connected to the top side end of the first positioning frame and the top side end of the lower template, a limited position frame is welded and fixed on the inner bottom end surface of the liquid storage frame, a volute spring is welded and fixed on the inner wall of the limit frame, the inner end of the volute spring is welded and fixed to the bottom of the spiral rod, four liquid storage frames are provided, and the four liquid storage frames are distributed in the connecting frame at equal angles, the connecting tubes are symmetrically distributed on both sides of the liquid storage frame, the connecting tube corresponds to the spiral rod one by one through the conveying cylinder, and the length of the spiral rod is greater than the length of the conveying cylinder.

[0014] Preferably, the fixed frame is connected to the middle part of the mounting plate, the rotating shaft and the fixed frame are rotatably connected, the bottom end of the rotating shaft is welded and fixed to the inner center part of the connecting frame, the bottom end surface of the connecting frame fits with the top end surface of the fixed plate, four third material chutes are provided, and the four third material chutes are distributed at equal angles on the fixed plate, the two third material chutes on the left and right sides correspond to the two collecting boxes one by one, and the two third material chutes on the front and back sides correspond to the two conveying equipment one by one, the width of the collecting box and the width of the conveying equipment are both greater than the length of the third material chutes, four second material chutes are provided, and the four second material chutes are distributed at equal angles on the connecting frame, the length and width of the second material chutes are respectively equal to the length and width of the third material chutes, the second material chutes correspond one by one to the third material chutes, the hydraulic rods are symmetrically distributed on the left and right sides of the top plate, and the hydraulic rods correspond one by one to the upper template through the second positioning frame.

[0015] Compared with the related art, the present invention has the following beneficial effects: 1. The present invention can drive the connecting frame on the rotating shaft to rotate intermittently by combining the first limiting plate and the second limiting plate with the first lever and the second lever, and each time it rotates 90°. At the same time, the rotating shaft can drive the turntable on the second driven shaft to rotate intermittently synchronously through the meshing of the first gear and the second gear. However, each time the turntable rotates 180°, the 180° intermittent rotation of the turntable can drive the transfer troughs on both sides to be intermittently aligned with the loading frame and the first unloading trough respectively, so that the shielding cover sheet material raw material in the loading frame can be automatically transported to the first unloading trough, and then the shielding cover sheet material raw material can be automatically transported to a lower template, and the 90° intermittent rotation of the rotating shaft can be used to drive each lower template to perform synchronous intermittent movement through the connecting frame, so that each lower template can be moved one by one to the automatic loading position of the shielding cover sheet material raw material, thereby realizing the fully automatic positioning and loading work of the stamping device, effectively improving the automation degree of the stamping device, and thus improving the working efficiency of the stamping device.

[0016] 2. After the shielding cover sheet material is loaded, the present invention utilizes the downward movement of the upper template and cooperates with the lower template to conveniently and stably stamp and form the shielding cover sheet material, and the punching waste in the stamping and forming process can be automatically transported to the collection box through the second discharge chute and the third discharge chute to complete the automatic collection work. Subsequently, the 90° intermittent rotation of the connecting frame can be used to drive the stamped and formed shielding cover to move to the third discharge chute above the conveying equipment. At this time, under the guiding cooperation of the guide plate and the guide groove, the lower template can be driven to automatically separate the mold, and then the automatic demoulding work of the shielding cover can be automatically completed, which effectively improves the working efficiency of the stamping device, avoids the problem that manual demoulding and feeding easily lead to product deformation, ensures the quality and consistency of the shielding cover, and makes up for the defect that the existing stamping device cannot perform automatic demoulding.

[0017] 3. During the automatic mold separation process of the lower template in the present invention, the connecting pipe can be used to automatically push the shielding cover in the lower template to carry out the material removal work, thereby avoiding the problem that the shielding cover is attached to the lower template after mold separation and cannot be used for subsequent material removal. In addition, during the mold separation process, the lower template can automatically drive the spiral rod under the cooperation of the second traction rope and the spiral spring, and then the lubricating oil in the liquid storage frame can be automatically transported to the connecting pipe. Subsequently, when the connecting pipe is inserted into the lower template, each small nozzle can be used to automatically lubricate the inner wall of the lower template, thereby effectively reducing the friction during the stamping process, thereby avoiding wear and improving the smoothness of the stamping process, reducing heat and wear during the process, and at the same time helping to protect the mold and the workpiece surface, increasing the diversity of use of the stamping device, and further improving the stamping quality of the shielding cover.

[0018] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the connection structure between the rotating shaft and the fixed frame of the present invention; Figure 3 It is a schematic diagram of the connection structure of the fixing plate and the guide groove of the present invention; Figure 4 It is a schematic diagram of the connection structure of the connecting pipe and the small nozzle of the present invention; Figure 5 It is a schematic diagram of the connection structure between the limit frame and the scroll spring of the present invention; Figure 6 It is a schematic diagram of the connection structure between the magnetic frame and the collection box of the present invention; Figure 7 It is a schematic diagram of the overall main cross-sectional structure of the present invention; Figure 8 The present invention Figure 7 The enlarged structural diagram at A in the middle; Fig. 9 is a schematic diagram of the side structure of the second limiting plate of the present invention; Fig.10 is a schematic diagram of a top view of the structure of a second limiting plate of the present invention; Fig.11 It is a schematic diagram of the top view of the mounting plate of the present invention; Fig.12 It is a schematic diagram of the main cross-sectional structure of the first positioning frame of the present invention; Fig.13 It is a schematic diagram of the main cross-sectional structure of the liquid storage frame of the present invention; Fig.14 The present invention Fig.13 The enlarged structural diagram at B in the middle; Fig.15 It is a schematic diagram of the guide plate structure of the present invention; Fig.16 It is a schematic diagram of the guide groove structure of the present invention; Fig.17 It is a schematic diagram of the top view of the connection frame of the present invention; Fig.18 It is a schematic diagram of the top cross-sectional structure of the liquid storage frame of the present invention; Fig.19 It is a schematic diagram of the main cross-sectional structure of the second positioning frame of the present invention.

[0021] Numbers in the figure: 1, fixed plate; 2, support seat; 3, support rod; 4, top plate; 5, mounting plate; 6, automatic loading and unloading assembly; 601, servo motor; 602, first limit plate; 603, connecting rod; 604, first lever; 605, rotating shaft; 606, second limit plate; 607, second lever; 608, first gear; 609, second gear; 610, first driven shaft; 611, synchronous wheel; 612, synchronous belt; 613, second driven shaft; 614, turntable; 615, transfer trough; 616, first unloading trough; 7, connecting frame; 8, second unloading trough; 9, multifunctional demoulding assembly; 901, first guide rod; 902, second guide rod; 903, baffle; 904, first sliding block; 905, second sliding block; 906, first connecting spring; 907, first positioning frame ; 908, first return spring; 909, first clamping rod; 910, lower template; 911, first clamping slot; 912, first traction rope; 913, guide wheel; 914, traction plate; 915, guide plate; 916, guide slot; 917, liquid storage frame; 918, fixed pipe; 919, solenoid valve; 920, connecting pipe; 921, small nozzle; 922, conveying cylinder; 923, spiral rod; 924, coil; 925, second traction rope; 926, limit frame; 927, scroll spring; 10, third unloading trough; 11, fixed frame; 12, support plate; 13, loading frame; 14, hydraulic rod; 15, second positioning frame; 16, second return spring; 17, second clamping rod; 18, upper template; 19, second clamping slot; 20, magnetic frame; 21, collection box; 22, universal wheel; 23, conveying equipment. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, 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 creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-19A high-speed precision stamping device for a mobile phone shielding cover comprises a fixing plate 1 and a connecting frame 7, a supporting seat 2 is welded and fixed on the bottom end surface of the fixing plate 1, a supporting rod 3 is welded and fixed on the top end surface of the fixing plate 1, a top plate 4 is welded and fixed on the top end of the supporting rod 3, a mounting plate 5 is welded and fixed on the supporting rod 3, an automatic loading and unloading assembly 6 is installed on the top plate 4, a second unloading trough 8 is penetrated through the bottom of the connecting frame 7, a multifunctional demoulding assembly 9 is installed in the connecting frame 7, a third unloading trough 10 is penetrated through the fixing plate 1, a fixing frame 11 is welded and fixed on the middle part of the mounting plate 5, a supporting plate 12 is welded and fixed on the side end surface of the mounting plate 5, a loading frame 13 is welded and fixed on the side end surface of the top plate 4, a hydraulic rod 14 is installed on the top plate 4, a second positioning frame 15 is installed and fixed on the bottom end of the hydraulic rod 14, and a second positioning frame 15 is welded and fixed on the side end surface of the second positioning frame 15 A second return spring 16, the other end of the second return spring 16 is welded and fixed with a second clamping rod 17, the second clamping rod 17 is slidably connected in the second positioning frame 15, and an upper template 18 is slidably connected in the second positioning frame 15, and a second clamping groove 19 is opened at the side end of the upper template 18, and the end of the second clamping rod 17 is clamped and connected in the second clamping groove 19. The automatic loading and unloading component 6 can realize the full-automatic positioning and loading work of the stamping device, effectively improve the automation degree of the stamping device, and then improve the working efficiency of the stamping device, and cooperate with the multifunctional demoulding component 9 to automatically complete the automatic demoulding work of the shielding cover, further improve the working efficiency of the stamping device, avoid the problem that manual demoulding and unloading easily leads to product deformation, ensure the quality and consistency of the shielding cover, and make up for the defect that the existing stamping device cannot perform automatic demoulding.

[0024] See also Figure 6 and Figure 7 A magnetic frame 20 is fixedly connected to the bottom end surface of the fixed plate 1, and a collecting box 21 is magnetically adsorbed and connected inside the magnetic frame 20. A universal wheel 22 is installed on the bottom end surface of the collecting box 21. There are two magnetic frames 20, and the two magnetic frames 20 are symmetrically distributed on the left and right sides of the bottom of the fixed plate 1. The magnetic frames 20 correspond to the collecting boxes 21 one by one. The outer wall of the collecting box 21 fits with the inner wall of the magnetic frame 20, and the top surface of the collecting box 21 fits with the bottom end surface of the fixed plate 1. A conveying device 23 is installed on the bottom end surface of the fixed plate 1. There are two conveying devices 23, and the two conveying devices 23 are symmetrically distributed on the front and back sides of the bottom of the fixed plate 1. By utilizing the magnetism of the magnetic frame 20, the magnetic positioning and separation of the collecting box 21 can be conveniently completed. Then the staff can push the collecting box 21 and use the universal wheel 22 to conveniently transport the collected waste, thereby ensuring the convenience of subsequent recycling and processing of the waste.

[0025] See also Figure 1 , Figure 2 and Figure 7-10The automatic loading and unloading assembly 6 includes a servo motor 601, which is welded and fixed on the top surface of the fixed plate 1. A first limit plate 602 and a connecting rod 603 are welded and fixed on the output shaft of the servo motor 601. A first shifting rod 604 is welded and fixed on the connecting rod 603. A rotating shaft 605, a first driven shaft 610 and a second driven shaft 613 are rotatably connected on the bottom surface of the fixed plate 1. A second limit plate 606, a second shifting rod 607 and a first gear 608 are welded and fixed on the rotating shaft 605. The side end surface of the first limit plate 602 fits with the side end surface of the second limit plate 606, and the side end surface of the second limit plate 606 is in an arc shape. Four second levers 607 are provided, and the four second levers 607 are distributed at equal angles on the rotating shaft 605. A groove is opened on the first limiting plate 602. The groove on the first limiting plate 602 is in the same direction as the connecting rod 603. The length of the groove on the first limiting plate 602 is greater than the length of the second limiting plate 606. The limiting of the first limiting plate 602 and the second limiting plate 606, combined with the first lever 604 and the second lever 607, can drive the connecting frame 7 on the rotating shaft 605 to rotate intermittently, and each time it rotates 90°. The intermittent rotation of the connecting frame 7 can ensure the convenience and efficiency of the subsequent stamping processing and automatic unloading of the shielding cover.

[0026] See also Figure 1 , Figure 2 , Figure 7 , Figure 8 , Fig.11 and Fig.12The first gear 608 is meshed with a second gear 609, and the second gear 609 is welded and fixed on the first driven shaft 610. The first driven shaft 610 and the second driven shaft 613 are both welded and fixed with a synchronous wheel 611, and the synchronous wheel 611 is connected with a synchronous belt 612. A turntable 614 is welded and fixed to the bottom end of the second driven shaft 613. A transfer trough 615 is penetrated through the turntable 614, and a first material discharge trough 616 is penetrated through the mounting plate 5. The circumference of the first gear 608 is equal to twice the circumference of the second gear 609. The diameter of the synchronous wheel 611 is larger than the diameter of the hydraulic rod 14. The second driven shaft 613 is connected to the center of the turntable 614. The bottom end surface of the turntable 614, the top surface of the mounting plate 5 and the top surface of the support plate 12 are located on the same horizontal plane. The transfer troughs 615 are symmetrically distributed on both sides of the turntable 614. The length and width of the transfer troughs 615 are respectively the same as the length and width of the first material discharge trough 616. The degrees of rotation are equal, and the first feeding chute 616 is symmetrically distributed on the left and right sides of the mounting plate 5. The rotating shaft 605 can drive the turntable 614 on the second driven shaft 613 to rotate synchronously and intermittently through the meshing of the first gear 608 and the second gear 609. However, the turntable 614 rotates 180° each time. The 180° intermittent rotation of the turntable 614 can drive the transfer troughs 615 on both sides to be intermittently aligned with the loading frame 13 and the first feeding chute 616 respectively, so that the shielding cover sheet material in the loading frame 13 can be automatically transported to the first feeding chute 616, and then the shielding cover sheet material can be automatically transported to a lower template 910, and the 90° intermittent rotation of the rotating shaft 605 can drive each lower template 910 to perform synchronous intermittent movement through the connecting frame 7, so that each lower template 910 can be moved one by one to the automatic loading position of the shielding cover sheet material, thereby realizing the fully automatic positioning and loading work of the stamping device.

[0027] See also Figure 7 , Fig.12 and Figure 15-18The multifunctional demoulding assembly 9 includes a first guide rod 901, a second guide rod 902 and a first positioning frame 907. Both ends of the first guide rod 901 and both ends of the second guide rod 902 are welded and fixed with baffles 903. The bottom of the baffle 903 is welded and fixed to the inner bottom end surface of the connecting frame 7. One end of the first positioning frame 907 is welded and fixed with a first sliding block 904. The other end of the first positioning frame 907 is welded and fixed with a second sliding block 905. The first sliding block 904 is slidably connected to the first guide rod 901, and the second sliding block 905 is slidably connected to the second guide rod 902. A first connecting spring 906 is welded and fixed to the side end surface of the first sliding block 904 and the side end surface of the second sliding block 905. The other end of the first connecting spring 906 is welded and fixed to the baffle 903. A first return spring 908 is welded and fixed to the side end surface of the first positioning frame 907. The other end of the first return spring 908 is welded and fixed to the first clamping rod 909. A lower template 910 is slidably connected in the first positioning frame 907. A first clamping groove 911 is provided at the side end of the lower template 910. The end of the first clamping rod 909 is clamped and connected in the first clamping groove 911. The first guide rod 901 The shape and size are the same as those of the second guide rod 902. Four groups of first positioning frames 907 are provided. The four groups of first positioning frames 907 are distributed at equal angles in the connecting frame 7. Two first positioning frames 907 are provided in each group. The two first positioning frames 907 are symmetrically distributed. The first sliding blocks 904 on the two first positioning frames 907 are symmetrically distributed on both sides of the first guide rod 901. The second sliding blocks 905 on the two first positioning frames 907 are symmetrically distributed on both sides of the second guide rod 902. The first positioning frames 907 correspond to the lower templates 910 one by one. The lengths of the two lower templates 910 are The sum of the lengths is less than the length of the second feed chute 8, the width of the second feed chute 8 is greater than the width of the lower template 910, the bottom end face of the first positioning frame 907 is in contact with the inner bottom end face of the connecting frame 7, the side end face of the lower template 910 is flush with the side end face of the first positioning frame 907, the first clamping rod 909 is symmetrically distributed on both sides of the first positioning frame 907, the first clamping rod 909 corresponds to the first clamping groove 911 one by one, and the cooperation of the first return spring 908 and the first clamping rod 909 can facilitate the disassembly, maintenance and clamping installation of the lower template 910 in the first positioning frame 907.

[0028] See also Figure 3 and 13 - Fig.18The second sliding block 905 is fixedly connected with a first traction rope 912, and the first traction rope 912 is limitedly slidably connected to a guide wheel 913, and the bottom end of the guide wheel 913 is fixedly installed on the inner bottom end surface of the connecting frame 7. The other end of the first traction rope 912 is fixedly connected with a traction plate 914, and a guide plate 915 is welded and fixed to the bottom end of the traction plate 914. The guide plate 915 penetrates and slides to the bottom of the connecting frame 7, and guide grooves 916 are penetrated on the front and rear sides of the fixed plate 1. The guide plate 915 is limitedly slidably connected in the guide groove 916, and a storage Liquid frame 917, the first traction rope 912 is symmetrically distributed on both sides of the bottom of the traction plate 914, the first traction rope 912 corresponds to the second sliding block 905 one by one, the cross-section of the guide plate 915 is a right-angled trapezoid, and the 90° intermittent rotation of the connecting frame 7 can drive the stamped shield to move to the third discharge trough 10 above the conveying equipment 23. At this time, under the guiding cooperation of the guide plate 915 and the guide groove 916, the lower template 910 can be driven to automatically separate the mold, and then the automatic demolding of the shield can be automatically completed, which effectively improves the working efficiency of the stamping device.

[0029] See also Figure 4 , Figure 5 and Figure 13-Figure 18The top side end of the liquid storage frame 917 is connected to a fixed pipe 918, on which a solenoid valve 919 is installed, a connecting pipe 920 is welded and fixed to the liquid storage frame 917, on which a small nozzle 921 is installed, and a conveying cylinder 922 is connected to the end of the connecting pipe 920, and a spiral rod 923 is rotatably connected in the conveying cylinder 922, and a coil 924 is welded and fixed to the top of the spiral rod 923, and a second traction rope 925 is wound around the coil 924, and the second traction rope 925 penetrates the sliding The end of the second traction rope 925 is fixedly connected to the side end of the first positioning frame 907, and the connecting pipe 920 is slidably connected to the top side end of the first positioning frame 907 and the top side end of the lower template 910. A limited position frame 926 is welded and fixed on the inner bottom end surface of the liquid storage frame 917, and a spiral spring 927 is welded and fixed on the inner wall of the limit frame 926. The inner end of the spiral spring 927 is welded and fixed to the bottom of the spiral rod 923. The liquid storage frame 917 is provided with four, four The liquid storage frame 917 is distributed at equal angles in the connecting frame 7, and the connecting pipe 920 is symmetrically distributed on both sides of the liquid storage frame 917. The connecting pipe 920 corresponds to the spiral rod 923 one by one through the conveying cylinder 922. The length of the spiral rod 923 is greater than the length of the conveying cylinder 922. During the automatic mold separation process of the lower template 910, the connecting pipe 920 can be used to automatically push the shielding cover in the lower template 910 to carry out the material discharge work, thereby avoiding the problem that the shielding cover is attached to the lower template 910 after the mold separation and subsequent material discharge cannot be carried out. In addition, during the mold separation process, the lower template 910 can automatically drive the spiral rod 923 under the cooperation of the second traction rope 925 and the spiral spring 927, and then the lubricating oil in the liquid storage frame 917 can be automatically transported to the connecting pipe 920. Subsequently, when the connecting pipe 920 is inserted into the lower template 910, each small nozzle 921 can be used to automatically lubricate the inner wall of the lower template 910, thereby effectively reducing the friction during the stamping process, thereby avoiding wear.

[0030] See also Figure 1 , Figure 3 , Figure 7 and Fig.17, the fixed frame 11 is connected to the middle part of the mounting plate 5, the rotating shaft 605 is rotatably connected to the fixed frame 11, the bottom end of the rotating shaft 605 is welded and fixed to the inner center part of the connecting frame 7, the bottom end surface of the connecting frame 7 is in contact with the top surface of the fixed plate 1, four third material feed chutes 10 are provided, and the four third material feed chutes 10 are distributed on the fixed plate 1 at equal angles. The two third material feed chutes 10 on the left and right sides correspond to the two collecting boxes 21 one by one, and the two third material feed chutes 10 on the front and rear sides correspond to the two conveying devices 23 one by one. The width of the collecting box 21 and the width of the conveying device 23 are both greater than the length of the third material feed chutes 10, and four second material feed chutes 8 are provided. Four second feed troughs 8 are distributed at equal angles on the connecting frame 7, and the length and width of the second feed troughs 8 are respectively equal to the length and width of the third feed trough 10, and the second feed troughs 8 correspond one-to-one to the third feed troughs 10. The hydraulic rods 14 are symmetrically distributed on the left and right sides of the top plate 4, and the hydraulic rods 14 correspond one-to-one to the upper template 18 through the second positioning frame 15. After the shielding cover sheet material is loaded, the downward movement of the upper template 18 is utilized to cooperate with the lower template 910 to conveniently and stably stamp the shielding cover sheet material raw material, and the punching waste in the stamping process can be automatically transported to the collection box 21 through the second feed trough 8 and the third feed trough 10 to complete the automatic collection work.

[0031] The specific implementation process of the present invention is as follows: First, the size and thickness of each component in the present application are produced and set according to the size of the mobile phone shielding cover. The staff can place the mobile phone shielding cover sheet material that needs to be stamped in the loading frame 13. At this time, the mobile phone shielding cover sheet material raw material is under the action of its own gravity. The shielding cover sheet material raw material at the bottom can automatically fall onto the support plate 12. At the same time, it is also in the transfer groove 615 on one side of the turntable 614. Then, under the driving action of the servo motor 601, it can drive the first limit plate 602 and the connecting rod 603 to rotate simultaneously. By rotating the connecting rod 603, the second lever 607 on the rotating shaft 605 can be driven by the first lever 604. Under the driving action of the first lever 604, the rotating shaft 605 can be driven to rotate automatically by the second lever 607, and the first lever 604 is driven to rotate. When the second lever 607 is toggled, the groove on the first limit plate 602 can face the second limit plate 606. At this time, the first limit plate 602 and the second limit plate 606 are separated and not fitted. Therefore, the rotating shaft 605 can drive the second limit plate 606 to rotate stably. After the second limit plate 606 and the first limit plate 602 rotate, they can fit again. At this time, the first limit plate 602 can fit and limit the second limit plate 606 to prevent the rotating shaft 605 on the second limit plate 606 from rotating or shaking. This reciprocating motion is performed by intermittently toggling each second lever 607 with the first lever 604, so as to drive the rotating shaft 605 to intermittently rotate counterclockwise, and each time it rotates 90°, under the intermittent rotation of the rotating shaft 605, the first gear 608 and the connecting frame 7 can be driven to rotate synchronously and intermittently. During the intermittent rotation of the rotating shaft 605, the first gear 608 can drive the meshing connected second gear 609 to perform synchronous intermittent rotation. Since the circumference of the first gear 608 is equal to twice the circumference of the second gear 609, when the first gear 608 performs 90° counterclockwise intermittent rotation, it can drive the meshing connected second gear 609 to perform 180° intermittent rotation. The 180° counterclockwise intermittent rotation of the second gear 609 can drive the first driven shaft 610 to rotate synchronously. At this time, under the transmission action of the synchronous wheel 611 and the synchronous belt 612, the turntable 614 on the second driven shaft 613 can also be driven to perform 180° intermittent rotation. At this time, under the intermittent rotation of 180° of the turntable 614, the shielding cover sheet material in the transfer groove 615 on one side can be driven to automatically move to the first unloading groove 616 on the mounting plate 5, and the shielding cover sheet material can automatically fall to the lower template 910. At the same time, the transfer groove 615 on the other side of the turntable 614 can move to the bottom of the loading frame 13. At this time, the mobile phone shielding cover sheet material is under the action of its own gravity. The shielding cover sheet material at the bottom layer inside the loading frame 13 can fall onto the support plate 12 again. At the same time, it is also in the transfer groove 615 on the other side of the turntable 614. This reciprocating process can realize the fully automatic positioning and loading work of the stamping device. After the mobile phone shielding cover sheet material is automatically loaded to the lower template 910, under the driving action of the hydraulic rod 14, the upper template 18 can be pushed downward by the second positioning frame 15. By utilizing the cooperation of the upper template 18 and the lower template 910, the mobile phone shielding cover sheet material can be automatically stamped and formed, and the punching waste of the mobile phone shielding cover sheet material during the stamping and forming process can be automatically transported to the collection box 21 through the second discharge trough 8 and the third discharge trough 10 to complete the automatic collection work. Subsequently, under the intermittent rotation action of the rotating shaft 605, the connecting frame 7 can be driven to intermittently rotate 90°, thereby driving the shielding cover after stamping and forming inside the lower template 910 to move to the third discharge trough 10 above the conveying device 23, and the first positioning frame 907 and the lower template 910 move to the third discharge trough 10 above the conveying device 23. When the guide plate 915 is at the guide groove 916 on the fixed plate 1, the guide plate 915 can move to the guide groove 916 on the fixed plate 1. At this time, under the elastic reset action of the first connecting spring 906, the second sliding blocks 905 on both sides of the second guide rod 902 can be pulled to automatically move to the side, and under the movement action of the second sliding blocks 905 on both sides, the first traction rope 912 on the guide wheel 913 can pull the traction plate 914 to automatically move downward, and then can drive the guide plate 915 to move downward into the guide groove 916. Similarly, under the elastic reset action of the first connecting spring 906, the first sliding blocks 904 on both sides of the first guide rod 901 can be pulled to automatically move to the side, and under the joint movement action of the first sliding blocks 904 on both sides and the second sliding blocks 905 on both sides, the two first positioning frames 907 and the corresponding lower template 910 can be driven to perform automatic mold separation. Since the connecting tube 920 is in a fixed position, during the demolding process of the two first positioning frames 907 and the lower template 910, the first positioning frame 907 and the lower template 910 can move to the connecting tube 920. At this time, under the pushing action of the connecting tube 920, the shielding cover in the lower template 910 can be automatically pushed to complete the automatic demolding and unloading work. At this time, the stamped shielding cover can automatically fall onto the conveying device 23 through the second unloading trough 8 and the third unloading trough 10. Then, the conveying device 23 can be used to carry out subsequent conveying work on the stamped shielding cover, ensuring the convenience of subsequent processing of the shielding cover. In addition, during the demolding process between the two first positioning frames 907 and the lower template 910, the first positioning frame 907 can drive the end of the second traction rope 925 to move toward the liquid storage frame 917. At this time, under the rotational elasticity of the spiral spring 927 inside the limit frame 926, the spiral rod 923 can be driven to automatically rotate inside the conveying cylinder 922. Under the automatic rotation of the spiral rod 923, the conveying cylinder 922 can automatically convey the lubricating oil in the liquid storage frame 917 to the connecting tube 920. Therefore, during the insertion of the connecting tube 920 into the lower template 910, each small nozzle 921 can be used to automatically lubricate the inner wall of the lower template 910, thereby effectively reducing the friction during the stamping process, thereby avoiding wear and improving the smoothness of the stamping process. Then, the rotating shaft 605 is continuously rotated intermittently by 90° counterclockwise, so that the connecting frame 7 can be driven to continue to rotate by 90°. At this time, the first positioning frame 907 and the lower template 910 after mold separation can be moved to the bottom of the upper template 18 on the other side. During the movement of the first positioning frame 907 and the lower template 910 after mold separation, the connecting frame 7 can drive the guide plate 915 to move out of the guide groove 916 on the fixed plate 1. At this time, under the guidance of the side end inclined surface of the guide plate 915, during the rotation of the connecting frame 7, the guide plate 915 can automatically move upward and reset by using the side end inclined surface, and under the upward movement of the guide plate 915, it can be pulled back by the first traction rope 91 2 Pull the second sliding blocks 905 on both sides to move to the middle and reset at the same time, thereby driving the first positioning frames 907 on both sides to automatically move to the middle and reset, so that the automatic mold closing of the first positioning frames 907 and the lower template 910 on both sides can be automatically completed, and then the first positioning frames 907 and the lower template 910 after mold closing will move to the bottom of the upper template 18 on the other side, ensuring the convenience and efficiency of subsequent automatic loading and stamping work. In this way, the automatic loading, automatic stamping and automatic demoulding of the shielding cover can be automatically completed, and the automatic collection of punching waste and the automatic lubrication of the inner wall of the lower template 910 can also be completed; After the two first positioning frames 907 and the lower mold plate 910 are molded together, the second traction rope 925 can pull the spiral rod 923 on the coil 924 to automatically rotate in the opposite direction. The reverse rotation of the spiral rod 923 does not transport the lubricating oil, so it does not cause waste of lubricating oil. After the two first positioning frames 907 and the lower mold plate 910 are molded together, the lower mold plate 910 can move away from the connecting tube 920, and the connecting tube 920 does not affect the subsequent stamping and forming work. After the punching device finishes working, the staff can pull outward the first clamping rods 909 on both sides of the first positioning frame 907 until the first clamping rods 909 move out of the first clamping grooves 911 on both sides of the lower template 910. At this time, the lower template 910 can move upward to separate from the first positioning frame 907 and can be taken out from the transfer trough 615 and the first unloading trough 616, completing the disassembly of the lower template 910, ensuring the convenience of subsequent inspection, maintenance and replacement of the lower template 910. Similarly, it is only necessary to pull outward the first clamping rods 909 on both sides of the first positioning frame 907 in advance to put the lower template 910 into the first positioning frame 907. The first clamping rod 909 is then released by the staff, and the first clamping rod 909 is automatically engaged with the first clamping grooves 911 on both sides of the lower template 910 under the elastic action of the first connecting spring 906, so that the clamping installation work of the lower template 910 can be completed conveniently, thereby ensuring the stability of the subsequent working state of the lower template 910; similarly, by using the cooperation of the second return spring 16 and the second clamping rod 17, the upper template 18 in the second positioning frame 15 can be conveniently and stably disassembled, repaired and clamped and installed, thereby improving the service life of the stamping device; After the punching device is finished working, the magnetism of the magnetic frame 20 can be used to conveniently complete the magnetic positioning and separation of the collection box 21. Then the staff can push the collection box 21 and use the universal wheel 22 to conveniently transfer the collected waste, ensuring the convenience of subsequent recycling and processing of the waste.

[0032] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high-speed precision punching device for a mobile phone shielding cover, comprising a fixing plate (1) and a connecting frame (7), characterized in that: A support seat (2) is welded and fixed on the bottom end surface of the fixing plate (1), a support rod (3) is welded and fixed on the top end surface of the fixing plate (1), a top plate (4) is welded and fixed on the top end of the support rod (3), a mounting plate (5) is welded and fixed on the support rod (3), an automatic loading and unloading assembly (6) is installed on the top plate (4), a second material discharge trough (8) is opened through the bottom of the connecting frame (7), a multifunctional demoulding assembly (9) is installed in the connecting frame (7), a third material discharge trough (10) is opened through the fixing plate (1), a fixing frame (11) is welded and fixed on the middle part of the mounting plate (5), and a support plate (12) is welded and fixed on the side end surface of the mounting plate (5). A loading frame (13) is welded and fixed on the side end surface of the top plate (4), a hydraulic rod (14) is installed on the top plate (4), a second positioning frame (15) is installed and fixed on the bottom end of the hydraulic rod (14), a second return spring (16) is welded and fixed on the side end surface of the second positioning frame (15), a second clamping rod (17) is welded and fixed on the other end of the second return spring (16), the second clamping rod (17) is slidably connected in the second positioning frame (15), an upper template (18) is slidably connected in the second positioning frame (15), a second clamping groove (19) is opened at the side end of the upper template (18), and the end of the second clamping rod (17) is clamped and connected in the second clamping groove (19).

2. A high-speed precision punching device for a mobile phone shielding cover according to claim 1, characterized in that: A magnetic frame (20) is fixedly connected to the bottom end surface of the fixed plate (1), a collection box (21) is magnetically adsorbed and connected inside the magnetic frame (20), a universal wheel (22) is installed on the bottom end surface of the collection box (21), two magnetic frames (20) are provided, and the two magnetic frames (20) are symmetrically distributed on the left and right sides of the bottom of the fixed plate (1), the magnetic frames (20) correspond to the collection boxes (21) one by one, the outer wall of the collection box (21) is in contact with the inner wall of the magnetic frame (20), the top surface of the collection box (21) is in contact with the bottom end surface of the fixed plate (1), and a conveying device (23) is installed on the bottom end surface of the fixed plate (1), and two conveying devices (23) are provided, and the two conveying devices (23) are symmetrically distributed on the front and back sides of the bottom of the fixed plate (1).

3. A high-speed precision punching device for a mobile phone shielding cover according to claim 2, characterized in that: The automatic loading and unloading assembly (6) comprises a servo motor (601), the servo motor (601) is welded and fixed on the top surface of the fixed plate (1), a first limit plate (602) and a connecting rod (603) are welded and fixed on the output shaft of the servo motor (601), a first shifting rod (604) is welded and fixed on the connecting rod (603), a rotating shaft (605), a first driven shaft (610) and a second driven shaft (613) are rotatably connected on the bottom surface of the fixed plate (1), a second limit plate (606), a second shifting rod (607) are welded and fixed on the rotating shaft (605), and a first driven shaft (610) and a second driven shaft (613) are welded and fixed on the rotating shaft (605). (607) and a first gear (608), the side end surface of the first limiting plate (602) is in contact with the side end surface of the second limiting plate (606), the side end surface of the second limiting plate (606) is in an arc shape, four second shifting rods (607) are arranged, and the four second shifting rods (607) are distributed at equal angles on the rotating shaft (605), the first limiting plate (602) is provided with a groove, the groove on the first limiting plate (602) and the connecting rod (603) are oriented in the same direction, and the length of the groove on the first limiting plate (602) is greater than the length of the second limiting plate (606).

4. A high-speed precision punching device for a mobile phone shielding cover according to claim 3, characterized in that: The first gear (608) is meshedly connected with a second gear (609), the second gear (609) is welded and fixed on the first driven shaft (610), the first driven shaft (610) and the second driven shaft (613) are both welded and fixed with a synchronous wheel (611), the synchronous wheel (611) is connected with a synchronous belt (612), a turntable (614) is welded and fixed at the bottom end of the second driven shaft (613), a transfer trough (615) is penetrated through the turntable (614), and a first material discharge trough (616) is penetrated through the mounting plate (5).

5. A high-speed precision punching device for a mobile phone shielding cover according to claim 4, characterized in that: The circumference of the first gear (608) is equal to twice the circumference of the second gear (609), the diameter of the synchronous wheel (611) is larger than the diameter of the hydraulic rod (14), the second driven shaft (613) is connected to the center of the turntable (614), the bottom end surface of the turntable (614), the top end surface of the mounting plate (5) and the top end surface of the support plate (12) are located on the same horizontal plane, the transfer troughs (615) are symmetrically distributed on both sides of the turntable (614), the length and width of the transfer troughs (615) are respectively equal to the length and width of the first material discharge trough (616), and the first material discharge trough (616) is symmetrically distributed on the left and right sides of the mounting plate (5).

6. A high-speed precision punching device for a mobile phone shielding cover according to claim 1, characterized in that: The multifunctional demoulding assembly (9) comprises a first guide rod (901), a second guide rod (902) and a first positioning frame (907); baffles (903) are welded and fixed to both ends of the first guide rod (901) and both ends of the second guide rod (902); the bottom of the baffle (903) is welded and fixed to the inner bottom end surface of the connecting frame (7); a first sliding block (904) is welded and fixed to one end of the first positioning frame (907); a second sliding block (905) is welded and fixed to the other end of the first positioning frame (907); the first sliding block (904) is slidably connected to the first guide rod (901); and the second sliding block (905) is slidably connected to the second guide rod ( 902), the first connecting spring (906) is welded and fixed on the side end surface of the first sliding block (904) and the side end surface of the second sliding block (905), the other end of the first connecting spring (906) is welded and fixed on the baffle (903), the first reset spring (908) is welded and fixed on the side end surface of the first positioning frame (907), the other end of the first reset spring (908) is welded and fixed with a first clamping rod (909), the first positioning frame (907) is slidably connected with a lower template (910), the side end of the lower template (910) is provided with a first clamping groove (911), and the end of the first clamping rod (909) is clamped and connected in the first clamping groove (911).

7. A high-speed precision punching device for a mobile phone shielding cover according to claim 6, characterized in that: The shape and size of the first guide rod (901) are the same as those of the second guide rod (902); four groups of first positioning frames (907) are provided, and the four groups of first positioning frames (907) are distributed at equal angles in the connection frame (7); two first positioning frames (907) are provided in each group, and the two first positioning frames (907) are symmetrically distributed; the first sliding blocks (904) on the two first positioning frames (907) are symmetrically distributed on both sides of the first guide rod (901); and the second sliding blocks (905) on the two first positioning frames (907) are symmetrically distributed on both sides of the second guide rod (902); The first positioning frame (907) corresponds to the lower template (910) one by one, the sum of the lengths of the two lower templates (910) is less than the length of the second material discharge trough (8), the width of the second material discharge trough (8) is greater than the width of the lower template (910), the bottom end surface of the first positioning frame (907) is in contact with the inner bottom end surface of the connecting frame (7), the side end surface of the lower template (910) is flush with the side end surface of the first positioning frame (907), the first clamping rod (909) is symmetrically distributed on both sides of the first positioning frame (907), and the first clamping rod (909) corresponds to the first clamping groove (911) one by one.

8. The high-speed precision punching device for a mobile phone shielding cover according to claim 6, characterized in that: The second sliding block (905) is fixedly connected to a first traction rope (912), the first traction rope (912) is limitedly slidably connected to a guide wheel (913), the bottom end of the guide wheel (913) is fixedly mounted on the inner bottom end surface of the connection frame (7), the other end of the first traction rope (912) is fixedly connected to a traction plate (914), the bottom end of the traction plate (914) is welded and fixed with a guide plate (915), the guide plate (915) penetrates and is slidably connected to the bottom of the connection frame (7), the front and rear sides of the fixed plate (1) are penetrated with guide grooves (916), the guide plate (915) is limitedly slidably connected in the guide grooves (916), a liquid storage frame (917) is welded and fixed in the connection frame (7), the first traction ropes (912) are symmetrically distributed on both sides of the bottom of the traction plate (914), the first traction ropes (912) correspond one-to-one to the second sliding block (905), and the cross section of the guide plate (915) is a right-angle trapezoid.

9. A high-speed precision punching device for a mobile phone shielding cover according to claim 8, characterized in that: The top side end of the liquid storage frame (917) is connected to a fixed tube (918), and a solenoid valve (919) is installed on the fixed tube (918). A connecting tube (920) is welded and fixed to the liquid storage frame (917), and a small nozzle (921) is installed on the connecting tube (920). The end of the connecting tube (920) is connected to a conveying cylinder (922), and a spiral rod (923) is rotatably connected inside the conveying cylinder (922). A coil (924) is welded and fixed on the top of the spiral rod (923), and a second traction rope (925) is wound around the coil (924). The second traction rope (925) penetrates and is slidably connected to the top side end of the liquid storage frame (917), and the end of the second traction rope (925) is fixedly connected to the side end of the first positioning frame (907). The connecting tube (920) penetrates and is slidably connected to the top side end of the first positioning frame (907) and the top side end of the lower template (910); a limit frame (926) is welded and fixed to the inner bottom end surface of the liquid storage frame (917); a spiral spring (927) is welded and fixed to the inner wall of the limit frame (926); the inner end of the spiral spring (927) is welded and fixed to the bottom of the spiral rod (923); four liquid storage frames (917) are provided, and the four liquid storage frames (917) are distributed at equal angles in the connecting frame (7); the connecting tubes (920) are symmetrically distributed on both sides of the liquid storage frame (917); the connecting tubes (920) correspond to the spiral rod (923) one by one through the conveying cylinder (922); the length of the spiral rod (923) is greater than the length of the conveying cylinder (922).

10. The high-speed precision punching device for mobile phone shielding cover according to claim 3, characterized in that: The fixed frame (11) is connected to the middle part of the mounting plate (5), the rotating shaft (605) and the fixed frame (11) are rotatably connected, the bottom end of the rotating shaft (605) is welded and fixed to the inner center part of the connecting frame (7), the bottom end surface of the connecting frame (7) is in contact with the top end surface of the fixed plate (1), four third material discharge troughs (10) are provided, and the four third material discharge troughs (10) are distributed on the fixed plate (1) at equal angles, the two third material discharge troughs (10) on the left and right sides correspond to the two collecting boxes (21) one by one, and the two third material discharge troughs (10) on the front and rear sides correspond to the two conveying devices (2 3) one-to-one correspondence, the width of the collecting box (21) and the width of the conveying device (23) are both greater than the length of the third material chute (10), four second material chute (8) are provided, and the four second material chute (8) are distributed on the connecting frame (7) at equal angles, the length and width of the second material chute (8) are respectively equal to the length and width of the third material chute (10), the second material chute (8) and the third material chute (10) are one-to-one corresponding, the hydraulic rods (14) are symmetrically distributed on the left and right sides of the top plate (4), and the hydraulic rods (14) are one-to-one corresponding to the upper template (18) through the second positioning frame (15).

Images