High-speed precision stamping device for mobile phone shielding cover

Abstract

The application belongs to the field of shielding cover stamping processing, and particularly relates to a high-speed precise stamping device for mobile phone shielding cover, which solves the problem that the existing stamping device for mobile phone shielding cover processing cannot realize automatic feeding and automatic demolding in the prior art, and comprises a fixed plate and a connecting frame, a support seat is welded and fixed on the bottom end face of the fixed plate, a support rod is welded and fixed on the top end face of the fixed plate, a top plate is welded and fixed on the top end of the support rod, an installation plate is welded and fixed on the support rod, an automatic feeding and discharging assembly is installed on the top plate, and a multifunctional demolding assembly is installed in the connecting frame. The automatic feeding and discharging assembly can realize full-automatic positioning and feeding of the stamping device, effectively improves the automation degree of the stamping device, and further improves the working efficiency of the stamping device. In addition, the multifunctional demolding assembly can automatically complete the automatic demolding of the shielding cover, and further improves the working efficiency of the stamping device.

Description

Technical Field

[0001] This invention relates to the field of shielding cover stamping technology, specifically a high-speed precision stamping device for mobile phone shielding covers. Background Technology

[0002] A mobile phone shield is a protective device that surrounds the interference sources of components, assemblies, or the entire system through its own shielding body, preventing the outward spread of interfering electromagnetic fields. By isolating the devices on the board, it achieves the effect of shielding various electromagnetic devices, minimizing crosstalk and sensitivity without affecting the system's operating speed. In the production and processing of mobile phone shields, a stamping device is required to stamp the raw metal sheet into the required shape.

[0003] Existing stamping devices for producing mobile phone shielding covers have some problems in actual operation. For example, a shielding cover stamping die with publication number CN117960872B, although capable of batch stamping and automatic demolding, cannot perform convenient and stable automatic feeding and unloading. After demolding, manual assistance from workers is still required for unloading, resulting in low work efficiency and high labor intensity. Furthermore, it cannot automatically lubricate the inside of the stamping die during actual operation. Therefore, friction and wear easily occur between the metal sheet material and the die during stamping, leading to low processing smoothness of the mobile phone shielding cover and difficulty in subsequent demolding. This can easily cause errors or product defects in the processing of the mobile phone shielding cover, resulting in poor practicality. Summary of the Invention

[0004] The technical problem solved by this invention is that existing stamping devices for producing mobile phone shielding covers cannot perform convenient and stable automatic feeding and automatic demolding and unloading during actual operation, and cannot perform automatic lubrication of the stamping die. Therefore, there is a need to provide a high-speed precision stamping device for mobile phone shielding covers.

[0005] To solve the above-mentioned technical problems, the present invention provides a high-speed precision stamping device for mobile phone shielding covers, comprising a fixed plate and a connecting frame. A support base is welded and fixed to the bottom end face of the fixed plate, a support rod is welded and fixed to the top face of the fixed plate, a top plate is welded and fixed to the top of the support rod, and an mounting plate is welded and fixed to the support rod. An automatic loading and unloading assembly is mounted on the top plate. A second unloading groove is formed through the bottom of the connecting frame, and a multi-functional demolding assembly is installed inside the connecting frame. A third unloading groove is formed through the fixed plate, and the middle part of the mounting plate is welded... A fixed frame is fixedly mounted. A support plate is welded and fixedly mounted on the side end face of the mounting plate. A feeding frame is welded and fixedly mounted on the side end face of the top plate. A hydraulic rod is mounted on the top plate. A second positioning frame is fixedly mounted on the bottom end of the hydraulic rod. A second return spring is welded and fixedly mounted on the side end face of the second positioning frame. A second locking rod is welded and fixedly mounted on the other end of the second return spring. The second locking rod is slidably connected inside the second positioning frame. An upper template is slidably connected inside the second positioning frame. A second slot is opened on the side end of the upper template. The end of the second locking rod is engaged and connected inside the second slot.

[0006] Preferably, a magnetic frame is fixedly connected to the bottom surface of the fixing plate, and a collection box is magnetically attached to the magnetic frame. A caster wheel is installed on the bottom surface of the collection box. There are two magnetic frames, which are symmetrically distributed on the left and right sides of the bottom of the fixing plate. Each magnetic frame corresponds to a collection box. The outer wall of the collection box is in contact with the inner wall of the magnetic frame. The top surface of the collection box is in contact with the bottom surface of the fixing plate. A conveying device is installed on the bottom surface of the fixing plate. There are two conveying devices, which are symmetrically distributed on the front and rear sides of the bottom of the fixing plate.

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

[0008] Preferably, a second gear is meshed with the first gear, the second gear is welded and fixed to the first driven shaft, a synchronous pulley is welded and fixed to both the first and second driven shafts, a synchronous belt is connected to the synchronous pulley, a turntable is welded and fixed to the bottom end of the second driven shaft, a transfer groove is formed through the turntable, and a first feeding groove is formed through the mounting plate.

[0009] Preferably, the circumference of the first gear is twice the circumference of the second gear, the diameter of the synchronous pulley is greater than the diameter of the hydraulic rod, the second driven shaft is connected to the center of the turntable, the bottom surface of the turntable, the top surface of the mounting plate and the top surface of the support plate are on the same horizontal plane, the transfer grooves are symmetrically distributed on both sides of the turntable, and the length and width of the transfer grooves are equal to the length and width of the first discharge groove, respectively. The first discharge grooves 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 both ends of the second guide rod are welded and fixed with baffles. The bottom of the baffles is welded and fixed to the inner bottom surface of the connecting frame. One end of the first positioning frame is welded and fixed with a first sliding block, and 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. A first connecting spring is welded and fixed to the side end face of both the first and second sliding blocks. The other end of the first connecting spring is welded and fixed to the baffle. A first return spring is welded and fixed to the side end face of the first positioning frame, and the other end of the first return spring is welded and fixed with a first locking rod. A lower template is slidably connected inside the first positioning frame. A first locking groove is opened on the side end of the lower template, and the end of the first locking rod is engaged in the first locking groove.

[0011] Preferably, the shape and size of the first guide rod are the same as those of the second guide rod. Four sets of first positioning frames are provided, distributed at equal angles within the connecting frame. Each set contains two first positioning frames, symmetrically distributed. First sliding blocks on the two first positioning frames are symmetrically distributed on both sides of the first guide rod, and second sliding blocks on the two first positioning frames are symmetrically distributed on both sides of the second guide rod. Each first positioning frame corresponds to a lower template. The sum of the lengths of the two lower templates is less than the length of the second feeding groove. The width of the second feeding groove is greater than the width of the lower template. The bottom surface of the first positioning frame is flush with the inner bottom surface of the connecting frame. The side surface of the lower template is flush with the side surface of the first positioning frame. The first locking rods are symmetrically distributed on both sides of the first positioning frame, and each first locking rod corresponds to a first locking groove.

[0012] Preferably, a first traction rope is fixedly connected to the second sliding block. The first traction rope is slidably connected to the guide wheel. The bottom end of the guide wheel is fixedly mounted on the inner bottom surface of the connecting frame. The other end of the first traction rope is fixedly connected to a traction plate. A guide plate is welded and fixed to the bottom end of the traction plate. The guide plate is slidably connected to the bottom of the connecting frame. Guide grooves are opened through the front and rear sides of the fixed plate. The guide plate is slidably connected to the guide grooves. A liquid storage frame is welded and fixed inside the connecting frame. The first traction ropes are symmetrically distributed on both sides of the bottom of the traction plate. The first traction rope corresponds to the second sliding block one by one. The cross-section of the guide plate is a right trapezoid.

[0013] Preferably, a fixed pipe is connected to the top side of the liquid storage frame, and a solenoid valve is installed on the fixed pipe. A connecting pipe is welded and fixed to the liquid storage frame, and a small nozzle is installed on the connecting pipe. A conveying cylinder is connected to the end of the connecting pipe, and a spiral rod is rotatably connected inside the conveying cylinder. A coil is welded and fixed to the top of the spiral rod, and a second traction rope is wound around the coil. The second traction rope is slidably connected to the top side of the liquid storage frame, and the end of the second traction rope is fixedly connected to the side of the first positioning frame. The connecting pipe is slidably connected to the top side of the first positioning frame and the top side of the lower template. A limit frame is welded and fixed to the inner bottom surface of the liquid storage frame, and a spiral spring is welded and fixed to the inner wall of the limit frame. The inner end of the spiral 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 at equal angles in the connecting frame. The connecting pipes are symmetrically distributed on both sides inside the liquid storage frames. The connecting pipes correspond one-to-one with the spiral rods through the conveying cylinders, 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 is rotatably connected to the fixed frame, the bottom end of the rotating shaft is welded and fixed to the inner center of the connecting frame, the bottom end face of the connecting frame is in contact with the top end face of the fixed plate, four third feeding troughs are provided, the four third feeding troughs are distributed at equal angles on the fixed plate, the two third feeding troughs on the left and right sides correspond one-to-one with the two collection boxes, and the two third feeding troughs on the front and rear sides correspond one-to-one with the two conveying devices, the width of the collection box and the width of the conveying device are both greater than the length of the third feeding trough, four second feeding troughs are provided, the four second feeding troughs are distributed at equal angles on the connecting frame, the length and width of the second feeding trough are equal to the length and width of the third feeding trough, and the second feeding trough corresponds one-to-one with the third feeding trough, the hydraulic rods are symmetrically distributed on the left and right sides of the top plate, and the hydraulic rods correspond one-to-one with the upper template through the second positioning frame.

[0015] Compared with related technologies, the present invention has the following beneficial effects: 1. This invention, through the limiting of the first and second limiting plates, combined with the first and second levers, can drive the connecting frame on the rotating shaft to rotate intermittently, with each rotation being 90°. Simultaneously, the rotating shaft, through the meshing of the first and second gears, can drive the turntable on the second driven shaft to rotate synchronously and intermittently, but the turntable rotates 180° each time. Utilizing the 180° intermittent rotation of the turntable, the transfer grooves on both sides can be driven to intermittently align with the loading frame and the first unloading groove, respectively. This allows the shielding cover material in the loading frame to be automatically transported to the first unloading groove. Subsequently, the shielding cover material can be automatically transported to a lower template. Furthermore, by utilizing the 90° intermittent rotation of the rotating shaft, the connecting frame can drive each lower template to move synchronously and intermittently, enabling each lower template to move one by one to the automatic loading point of the shielding cover material. This achieves fully automatic positioning and loading of the stamping device, effectively improving the automation level of the stamping device and thus increasing its working efficiency.

[0016] 2. After the raw material for the shielding cover is fed, the present invention utilizes the downward movement of the upper template, in conjunction with the lower template, to conveniently and stably stamp the raw material. The punching waste generated during the stamping process is automatically transported to a collection box via the second and third discharge troughs for automatic collection. Subsequently, the 90° intermittent rotation of the connecting frame moves the stamped shielding cover to the third discharge trough above the conveying equipment. Guided by the guide plate and guide trough, the lower template automatically separates from the mold, thus automatically demolding the shielding cover. This effectively improves the efficiency of the stamping device, avoids the problem of product deformation caused by manual demolding, ensures the quality and consistency of the shielding cover, and overcomes the deficiency of existing stamping devices that cannot perform automatic demolding.

[0017] 3. In the automatic mold-separation process of the lower mold in this invention, the connecting pipe can automatically push the shield inside the lower mold for material feeding, avoiding the problem of the shield sticking to the lower mold after mold separation and being unable to feed material subsequently. Furthermore, during the mold separation process, the lower mold can automatically drive the screw rod under the cooperation of the second traction rope and the spiral spring, thereby automatically delivering the lubricating oil in the liquid storage frame to the connecting pipe. Subsequently, during the insertion of the connecting pipe into the lower mold, it can automatically lubricate the inner wall of the lower mold using various small nozzles, thereby effectively reducing friction during the stamping process, thus avoiding wear and improving the smoothness of the stamping process. It can reduce heat and wear during the processing, while also helping to protect the mold and workpiece surface, increasing the versatility of the stamping device, and further improving the stamping quality of the shield.

[0018] To make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, 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.

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

[0021] Labels in the diagram: 1. Fixed plate; 2. Support base; 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 pulley; 612. Synchronous belt; 613. Second driven shaft; 614. Turntable; 615. Transfer groove; 616. First unloading groove; 7. Connecting frame; 8. Second unloading groove; 9. Multifunctional demolding 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 locking rod; 910, Lower template; 911, First slot; 912, First traction rope; 913, Guide wheel; 914, Traction plate; 915, Guide plate; 916, Guide groove; 917, Liquid storage frame; 918, Fixing pipe; 919, Solenoid valve; 920, Connecting pipe; 921, Small nozzle; 922, Conveying cylinder; 923, Spiral rod; 924, Coil; 925, Second traction rope; 926, Limiting frame; 927, Spiral spring; 10, Third unloading chute; 11, Fixing frame; 12, Support plate; 13, Loading frame; 14, Hydraulic rod; 15, Second positioning frame; 16, Second return spring; 17, Second locking rod; 18, Upper template; 19, Second slot; 20, Magnetic frame; 21, Collection box; 22, Universal wheel; 23, Conveying equipment. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1-19A high-speed precision stamping device for a mobile phone shielding cover includes a fixed plate 1 and a connecting frame 7. A support base 2 is welded and fixed to the bottom end face of the fixed plate 1, a support rod 3 is welded and fixed to the top end face of the fixed plate 1, a top plate 4 is welded and fixed to the top end of the support rod 3, an mounting plate 5 is welded and fixed to the support rod 3, an automatic loading and unloading assembly 6 is mounted on the top plate 4, a second unloading groove 8 is opened through the bottom of the connecting frame 7, a multi-functional demolding assembly 9 is installed inside the connecting frame 7, a third unloading groove 10 is opened through the fixed plate 1, a fixed frame 11 is welded and fixed to the middle of the mounting plate 5, a support plate 12 is welded and fixed to the side end face of the mounting plate 5, an loading frame 13 is welded and fixed to the side end face of the top plate 4, a hydraulic rod 14 is mounted on the top plate 4, a second positioning frame 15 is mounted and fixed to the bottom end of the hydraulic rod 14, and a... The second return spring 16 has a second locking rod 17 welded and fixed to its other end. The second locking rod 17 is slidably connected to the second positioning frame 15. The upper template 18 is slidably connected to the second positioning frame 15. The side end of the upper template 18 is provided with a second slot 19. The end of the second locking rod 17 is engaged and connected to the second slot 19. The automatic loading and unloading assembly 6 can realize the fully automatic positioning and loading of the stamping device, which effectively improves the automation level of the stamping device and thus improves the working efficiency of the stamping device. In addition, with the multi-functional demolding assembly 9, the automatic demolding of the shielding cover can be completed automatically, which further improves the working efficiency of the stamping device, avoids the problem that the product is easily deformed due to manual demolding and unloading, ensures the quality and consistency of the shielding cover, and makes up for the defect that the existing stamping device cannot perform automatic demolding.

[0024] Please see Figure 6 and Figure 7 A magnetic frame 20 is fixedly connected to the bottom surface of the fixed plate 1. A collection box 21 is magnetically attached inside the magnetic frame 20. A caster wheel 22 is installed on the bottom surface of the collection box 21. There are two magnetic frames 20, which are symmetrically distributed on the left and right sides of the bottom of the fixed plate 1. The magnetic frames 20 correspond one-to-one with the collection boxes 21. 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 surface of the fixed plate 1. A conveying device 23 is installed on the bottom surface of the fixed plate 1. There are two conveying devices 23, which are symmetrically distributed on the front and rear sides of the bottom of the fixed plate 1. Using the magnetism of the magnetic frame 20, the magnetic positioning and separation of the collection box 21 can be easily completed. Then, the staff can push the collection box 21 and use the caster wheel 22 to easily transfer the collected waste, ensuring the convenience of subsequent waste recycling and processing.

[0025] Please see Figure 1 , Figure 2 and Figures 7-10The automatic loading and unloading assembly 6 includes a servo motor 601, which is welded and fixed to the top surface of the top plate 4. A first limiting plate 602 and a connecting rod 603 are welded and fixed to the output shaft of the servo motor 601. A first lever 604 is welded and fixed to the connecting rod 603. A rotating shaft 605, a first driven shaft 610, and a second driven shaft 613 are rotatably connected to the bottom surface of the top plate 4. A second limiting plate 606, a second lever 607, and a first gear 608 are welded and fixed to the rotating shaft 605. The side end face of the first limiting plate 602 is in contact with the side end face of the second limiting plate 606, and the side end face of the second limiting plate 606 is arc-shaped. 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 provided on the first limiting plate 602. The groove on the first limiting plate 602 faces 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. By using 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, the connecting frame 7 on the rotating shaft 605 can be driven to rotate intermittently, and each rotation is 90°. The intermittent rotation of the connecting frame 7 can ensure the convenience and efficiency of the subsequent stamping process and automatic unloading of the shielding cover.

[0026] Please see Figure 1 , Figure 2 , Figure 7 , Figure 8 , Figure 11 and Figure 12A second gear 609 is meshed with the first gear 608. The second gear 609 is welded and fixed to the first driven shaft 610. Synchronous pulleys 611 are welded and fixed to both the first driven shaft 610 and the second driven shaft 613. A synchronous belt 612 is connected to the synchronous pulley 611. A turntable 614 is welded and fixed to the bottom end of the second driven shaft 613. A transfer groove 615 is formed through the turntable 614. A first discharge groove 616 is formed through the mounting plate 5. The circumference of the first gear 608 is twice the circumference of the second gear 609. The diameter of the synchronous pulley 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 face of the turntable 614, the top end face of the mounting plate 5, and the top end face of the support plate 12 are on the same horizontal plane. The transfer grooves 615 are symmetrically distributed on both sides of the turntable 614. The length and width of the transfer grooves 615 are the same as the length and width of the first discharge groove 616, respectively. With equal degrees, the first feeding groove 616 is symmetrically distributed on the left and right sides of the mounting plate 5. The rotating shaft 605, through the meshing of the first gear 608 and the second gear 609, can drive the turntable 614 on the second driven shaft 613 to rotate synchronously and intermittently. However, the turntable 614 rotates 180° each time. By using the 180° intermittent rotation of the turntable 614, the transfer grooves 615 on both sides can be driven to be intermittently aligned with the loading frame 13 and the first feeding groove 616 respectively. Thus, the shielding cover material in the loading frame 13 can be automatically transported to the first feeding groove 616. Then, the shielding cover material can be automatically transported to a lower template 910. And by using the 90° intermittent rotation of the rotating shaft 605, the connecting frame 7 can drive each lower template 910 to move synchronously and intermittently, so that each lower template 910 can move to the automatic feeding position of the shielding cover material, realizing the fully automatic positioning and feeding operation of the stamping device.

[0027] Please see Figure 7 , Figure 12 and Figures 15-18The multifunctional demolding 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 baffles 903 is welded and fixed to the inner bottom surface of the connecting frame 7. A first sliding block 904 is welded and fixed to one end of the first positioning frame 907, and 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. A first connecting spring 906 is welded and fixed to the side end face of the first sliding block 904 and the side end face 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 face of the first positioning frame 907. A first locking rod 909 is welded and fixed to the other end of the first return spring 908. A lower template 910 is slidably connected inside the first positioning frame 907. A first slot 911 is opened on the side end of the lower template 910. The end of the first locking rod 909 is engaged and connected in the first slot 911. The first guide rod 901... The shape and size of the first positioning frame 907 are the same as those of the second guide rod 902. Four sets of first positioning frames 907 are provided, equidistantly distributed within the connecting frame 7. Each set contains two first positioning frames 907, symmetrically distributed. First sliding blocks 904 on the two first positioning frames 907 are symmetrically distributed on both sides of the first guide rod 901, and second sliding blocks 905 on the two first positioning frames 907 are symmetrically distributed on both sides of the second guide rod 902. Each first positioning frame 907 corresponds one-to-one with the lower template 910. The lengths of the two lower templates 910 are... The sum of the lengths is less than the length of the second unloading groove 8, the width of the second unloading groove 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 locking rods 909 are symmetrically distributed on both sides of the first positioning frame 907, and the first locking rods 909 correspond one-to-one with the first locking grooves 911. With the cooperation of the first return spring 908 and the first locking rods 909, the lower template 910 inside the first positioning frame 907 can be easily and stably disassembled, inspected and installed.

[0028] Please see Figure 3 and Figures 13-18A first traction rope 912 is fixedly connected to the second sliding block 905. The first traction rope 912 is slidably connected to the guide wheel 913. The bottom end of the guide wheel 913 is fixedly mounted on the inner bottom surface of the connecting frame 7. The other end of the first traction rope 912 is fixedly connected to a traction plate 914. A guide plate 915 is welded and fixed to the bottom end of the traction plate 914. The guide plate 915 is slidably connected to the bottom of the connecting frame 7. Guide grooves 916 are provided through the front and rear sides of the fixed plate 1. The guide plate 915 is slidably connected to the guide grooves 916. A storage container is welded and fixed inside the connecting frame 7. The liquid frame 917 and the first traction rope 912 are symmetrically distributed on both sides of the bottom of the traction plate 914. The first traction rope 912 corresponds one-to-one with the second sliding block 905. The cross-section of the guide plate 915 is a right trapezoid. By using the 90° intermittent rotation of the connecting frame 7, the shielding cover after stamping can be moved to the third unloading groove 10 above the conveying equipment 23. At this time, under the guiding action of the guide plate 915 and the guide groove 916, the lower template 910 can be automatically separated, thereby automatically completing the demolding of the shielding cover, which effectively improves the working efficiency of the stamping device.

[0029] Please see Figure 4 , Figure 5 and Figures 13-18A fixed pipe 918 is connected to the top side of the liquid storage frame 917. A solenoid valve 919 is installed on the fixed pipe 918. A connecting pipe 920 is welded and fixed to the liquid storage frame 917. A small nozzle 921 is installed on the connecting pipe 920. A conveying cylinder 922 is connected to the end of the connecting pipe 920. A screw rod 923 is rotatably connected inside the conveying cylinder 922. A coil 924 is welded and fixed to the top of the screw rod 923. A second traction rope 925 is wound around the coil 924 and passes through the sliding mechanism. The end of the second traction rope 925 is fixedly connected to the side of the first positioning frame 907, and the connecting pipe 920 slides through and connects the top side of the first positioning frame 907 and the top side of the lower template 910. A limit frame 926 is welded and fixed to the inner bottom 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. Liquid storage frames 917 are evenly distributed within connecting frames 7, and connecting pipes 920 are symmetrically distributed on both sides inside the liquid storage frames 917. The connecting pipes 920 correspond one-to-one with the screw rods 923 via conveying cylinders 922. The length of the screw rods 923 is greater than the length of the conveying cylinders 922. During the automatic mold separation process of the lower mold 910, the connecting pipes 920 can automatically push the shielding cover inside the lower mold 910 to perform the material feeding operation, avoiding the problem of the shielding cover sticking to the lower mold 910 after mold separation and being unable to perform subsequent material feeding. Furthermore, during the mold separation process, the lower mold 910 can automatically drive the screw rods 923 under the cooperation of the second traction rope 925 and the spiral spring 927, thereby automatically transporting the lubricating oil in the liquid storage frames 917 to the connecting pipes 920. Subsequently, during the insertion of the connecting pipes 920 into the lower mold 910, the inner wall of the lower mold 910 can be automatically lubricated using various small nozzles 921, thereby effectively reducing friction during the stamping process and avoiding wear.

[0030] Please see Figure 1 , Figure 3 , Figure 7 and Figure 17The 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 of the connecting frame 7. The bottom end face of the connecting frame 7 is in contact with the top end face of the fixed plate 1. Four third discharge troughs 10 are provided, and the four third discharge troughs 10 are distributed at equal angles on the fixed plate 1. The two third discharge troughs 10 on the left and right sides correspond one-to-one with the two collection boxes 21, and the two third discharge troughs 10 on the front and rear sides correspond one-to-one with the two conveying devices 23. The width of the collection box 21 and the width of the conveying device 23 are both greater than the length of the third discharge trough 10. Four second discharge troughs 8 are provided. Four second feeding slots 8 are distributed at equal angles on the connecting frame 7. The length and width of the second feeding slots 8 are equal to the length and width of the third feeding slots 10, respectively. The second feeding slots 8 and the third feeding slots 10 correspond one-to-one. The hydraulic rods 14 are symmetrically distributed on the left and right sides of the top plate 4. The hydraulic rods 14 correspond one-to-one with the upper template 18 through the second positioning frame 15. After the shielding cover material is fed, the downward movement of the upper template 18, in conjunction with the lower template 910, can conveniently and stably stamp the shielding cover material. The punching waste during the stamping process can be automatically transported to the collection box 21 through the second feeding slots 8 and the third feeding slots 10 to complete the automatic collection work.

[0031] The specific implementation process of this invention is as follows: First, the size and thickness of each component in this application are set according to the size of the mobile phone shielding cover. The operator can place the raw material of the mobile phone shielding cover sheet that needs to be stamped into the loading frame 13. At this time, under the action of its own gravity, the bottom shielding cover sheet material can automatically fall onto the tray 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 limiting plate 602 and the connecting rod 603 to rotate simultaneously. Using the rotation of the connecting rod 603, the first lever 604 can move the second lever 607 on the rotating shaft 605. Under the action of the first lever 604, the second lever 607 can drive the rotating shaft 605 to rotate automatically. When the second lever 607 is turned, the groove on the first limiting plate 602 is aligned with the second limiting plate 606. At this time, the first limiting plate 602 and the second limiting plate 606 are disengaged and not in contact. Therefore, the rotating shaft 605 can drive the second limiting plate 606 to rotate stably. After the second limiting plate 606 and the first limiting plate 602 rotate, they can be in contact again. At this time, the first limiting plate 602 can fit and limit the second limiting plate 606, preventing the rotating shaft 605 on the second limiting plate 606 from rotating or shaking. By intermittently turning each second lever 607 with the first lever 604, the rotating shaft 605 can be driven to rotate counterclockwise intermittently, and each rotation is 90°. Under the action of the intermittent rotation of the rotating shaft 605, the first gear 608 and the connecting frame 7 can be driven to rotate synchronously intermittently. During the intermittent rotation of the rotating shaft 605, the first gear 608 drives the meshing second gear 609 to rotate synchronously and intermittently. Since the circumference of the first gear 608 is twice that of the second gear 609, when the first gear 608 rotates 90° counterclockwise intermittently, it drives the meshing second gear 609 to rotate 180° intermittently. The 180° counterclockwise intermittent rotation of the second gear 609 drives the first driven shaft 610 to rotate synchronously. At this time, under the transmission action of the synchronous pulley 611 and the synchronous belt 612, the turntable 614 on the second driven shaft 613 can also rotate 180° intermittently. At the same time, under the 180° intermittent rotation of the turntable 614, the shielding cover material in the transfer groove 615 on one side can be automatically moved to the first unloading groove 616 on the mounting plate 5. At this time, the shielding cover 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, under the action of its own gravity, the shielding cover material at the bottom of 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 process is repeated to realize the fully automatic positioning and loading of the stamping device. After the mobile phone shielding cover material is automatically fed to the lower template 910, it is driven by the hydraulic rod 14 and pushed by the second positioning frame 15 to move the upper template 18 downward. The cooperation between the upper template 18 and the lower template 910 allows for automatic stamping of the mobile phone shielding cover material. The punching waste generated during the stamping process is automatically transported to the collection box 21 via the second and third feeding troughs 8 and 10 for automatic collection. Subsequently, the intermittent rotation of the rotating shaft 605 drives the connecting frame 7 to rotate 90° intermittently, thereby moving the stamped shielding cover inside the lower template 910 to the third feeding trough 10 above the conveying device 23. Meanwhile, the first positioning frame 907 and the lower template 910 move to the third feeding trough 10 above the conveying device 23. When the guide plate 915 moves to the guide groove 916 on the fixed plate 1, under the elastic reset action of the first connecting spring 906, it can pull the second sliding blocks 905 on both sides of the second guide rod 902 to move automatically to the side. Under the action of the movement 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 move automatically downward, thereby driving the guide plate 915 to move downward into the guide groove 916. Similarly, under the elastic reset action of the first connecting spring 906, it can pull the first sliding blocks 904 on both sides of the first guide rod 901 to move automatically to the side. Under the joint action of the movement of the first sliding blocks 904 on both sides and the second sliding blocks 905 on both sides, it can drive the two first positioning frames 907 and the corresponding lower template 910 to perform automatic mold separation work. Since the connecting pipe 920 is in a fixed position, during the mold separation 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 pipe 920. At this time, under the pushing action of the connecting pipe 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 shielding cover after stamping can automatically fall onto the conveying device 23 through the second unloading groove 8 and the third unloading groove 10. Then, the conveying device 23 can be used to carry out the subsequent conveying work of the shielding cover after stamping, ensuring the convenience of the subsequent processing of the shielding cover. Furthermore, during the separation process of 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 towards the liquid storage frame 917. At this time, under the rotational elasticity of the spiral spring 927 inside the limiting frame 926, the spiral rod 923 can be driven to rotate automatically inside the conveying cylinder 922. Under the automatic rotation of the spiral rod 923, the conveying cylinder 922 can automatically transport the lubricating oil in the liquid storage frame 917 to the connecting pipe 920. Therefore, during the insertion of the connecting pipe 920 into the lower template 910, the inner wall of the lower template 910 can be automatically lubricated by each small nozzle 921, thereby effectively reducing friction during the stamping process, avoiding wear, and improving the smoothness of the stamping process. Then, by continuing to rotate the rotating shaft 605 intermittently counterclockwise by 90°, the connecting frame 7 can continue to rotate by 90°. At this time, the first positioning frame 907 and the lower template 910 after mold separation can move to directly below 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 away from the guide groove 916 on the fixed plate 1. At this time, under the guidance of the inclined surface of the side end of the guide plate 915, during the rotation of the connecting frame 7, the guide plate 915 can automatically move upward and reset using the inclined surface of the side end. Under the upward movement of the guide plate 915, it can be moved by the first traction rope 91 2. Pulling the second sliding blocks 905 on both sides simultaneously moves them to the center to reset, thereby driving the first positioning frames 907 on both sides to automatically move to the center to reset. This allows for the automatic mold closing of the first positioning frames 907 and the lower template 910 on both sides. After the mold is closed, the first positioning frames 907 and the lower template 910 move to the lower template 18 on the other side, ensuring the convenience and efficiency of subsequent automatic feeding and stamping. This process is repeated to automatically and efficiently complete the automatic feeding, stamping, and demolding of the shielding cover. It also enables the automatic collection of punching waste and the automatic lubrication of the inner wall of the lower template 910. Furthermore, after the two first positioning frames 907 and the lower template 910 are closed, they can automatically reverse the rotation of the spiral rod 923 on the coil 924 by pulling the second traction rope 925. The reverse rotation of the spiral rod 923 will not deliver lubricating oil, so it will not cause any waste of lubricating oil. After the two first positioning frames 907 and the lower template 910 are closed, the lower template 910 can move away from the connecting pipe 920. The connecting pipe 920 will not affect the subsequent stamping and forming work. After the stamping device finishes its operation, the operator can pull the first locking rods 909 on both sides of the first positioning frame 907 outwards until the first locking rods 909 disengage from the first locking slots 911 on both sides of the lower die plate 910. At this point, the lower die plate 910 can move upwards and disengage from the first positioning frame 907, and can be removed from the transfer slot 615 and the first unloading slot 616, completing the disassembly of the lower die plate 910. This ensures convenient subsequent inspection, maintenance, and replacement of the lower die plate 910. Similarly, by pulling the first locking rods 909 on both sides of the first positioning frame 907 outwards in advance, the lower die plate 910 can be placed into the first positioning frame 907. Within the positioning frame 907, the operator can then release the first locking rod 909. At this time, under the elastic action of the first connecting spring 906, the first locking rod 909 can be automatically engaged into the first slots 911 on both sides of the lower template 910, thereby conveniently completing the engagement and installation of the lower template 910, thus ensuring the stability of the lower template 910 in subsequent working states. Similarly, by utilizing the cooperation of the second return spring 16 and the second locking rod 17, the upper template 18 within the second positioning frame 15 can be conveniently and stably disassembled, inspected, and engaged, thus improving the service life of the stamping device. Furthermore, after the stamping device finishes its work, the magnetic frame 20 can be used to easily complete the magnetic positioning and separation of the collection box 21. Subsequently, the staff can push the collection box 21 and use the casters 22 to easily transfer the collected waste, ensuring the convenience of subsequent waste recycling and processing.

[0032] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A high-speed precision stamping device for a mobile phone shielding cover, comprising a fixing plate (1) and a connecting frame (7), characterized in that: A support base (2) is welded and fixed to the bottom end face of the fixed plate (1), a support rod (3) is welded and fixed to the top end face of the fixed plate (1), a top plate (4) is welded and fixed to the top end of the support rod (3), an mounting plate (5) is welded and fixed to the support rod (3), an automatic loading and unloading assembly (6) is installed on the top plate (4), a second unloading groove (8) is opened through the bottom of the connecting frame (7), a multi-functional demolding assembly (9) is installed inside the connecting frame (7), a third unloading groove (10) is opened through the fixed plate (1), a fixed frame (11) is welded and fixed to the middle of the mounting plate (5), a support plate (12) is welded and fixed to the side end face of the mounting plate (5), and a support plate (12) is welded to the side end face of the top plate (4). A feeding frame (13) is fixedly attached to the top plate (4), a hydraulic rod (14) is installed on the top plate (4), a second positioning frame (15) is fixedly attached to the bottom end of the hydraulic rod (14), a second reset spring (16) is welded and fixed to the side end of the second positioning frame (15), a second locking rod (17) is welded and fixed to the other end of the second reset spring (16), the second locking rod (17) is slidably connected to the second positioning frame (15), an upper template (18) is slidably connected to the second positioning frame (15), a second slot (19) is opened on the side end of the upper template (18), the end of the second locking rod (17) is engaged and connected to the second slot (19), and the bottom end of the connecting frame (7) is in contact with the top end of the fixing plate (1). The multifunctional demolding 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 baffles (903) is welded and fixed to the inner bottom surface of the connecting frame (7). One end of the first positioning frame (907) is welded and fixed with a first sliding block (904), and 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 (901). On 902), a first connecting spring (906) is welded and fixed on the side end face of the first sliding block (904) and the side end face of the second sliding block (905). The other end of the first connecting spring (906) is welded and fixed on the baffle (903). A first reset spring (908) is welded and fixed on the side end face of the first positioning frame (907). A first locking rod (909) is welded and fixed on the other end of the first reset spring (908). A lower template (910) is slidably connected inside the first positioning frame (907). A first slot (911) is opened on the side end of the lower template (910). The end of the first locking rod (909) is engaged and connected in the first slot (911). A first traction rope (912) is fixedly connected to the second sliding block (905). The first traction rope (912) is slidably connected to the guide wheel (913). The bottom end of the guide wheel (913) is fixedly installed on the inner bottom surface of the connecting frame (7). The other end of the first traction rope (912) is fixedly connected to the traction plate (914). The bottom end of the traction plate (914) is welded and fixed to the guide plate (915). The guide plate (915) is slidably connected to the bottom of the connecting frame (7). The front and rear sides of the fixed plate (1) are provided with guide grooves (916). The guide plate (915) is slidably connected to the guide groove (916). 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 trapezoid.

2. The high-speed precision stamping device for a mobile phone shielding cover according to claim 1, characterized in that: A magnetic frame (20) is fixedly connected to the bottom surface of the fixed plate (1). A collection box (21) is magnetically attached inside the magnetic frame (20). A caster wheel (22) is installed on the bottom surface of the collection box (21). There are two magnetic frames (20), which are symmetrically distributed on the left and right sides of the bottom of the fixed plate (1). The magnetic frames (20) correspond one-to-one with the collection boxes (21). 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 surface of the fixed plate (1). A conveying device (23) is installed on the bottom surface of the fixed plate (1). There are two conveying devices (23), which are symmetrically distributed on the front and back sides of the bottom of the fixed plate (1).

3. The high-speed precision stamping device for a mobile phone shielding cover according to claim 2, characterized in that: The automatic loading and unloading assembly (6) includes a servo motor (601), which is welded and fixed to the top surface of the top plate (4). A first limiting plate (602) and a connecting rod (603) are welded and fixed to the output shaft of the servo motor (601). A first lever (604) is welded and fixed to the connecting rod (603). A rotating shaft (605), a first driven shaft (610), and a second driven shaft (613) are rotatably connected to the bottom surface of the top plate (4). A second limiting plate (606) and a second lever (604) are welded and fixed to the rotating shaft (605). 607) and the first gear (608), the side end face of the first limiting plate (602) is in contact with the side end face of the second limiting plate (606), the side end face of the second limiting plate (606) is arc-shaped, four second levers (607) are provided, the four second levers (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) face the same direction, the length of the groove on the first limiting plate (602) is greater than the length of the second limiting plate (606).

4. The high-speed precision stamping device for a mobile phone shielding cover according to claim 3, characterized in that: A second gear (609) is meshed with the first gear (608). The second gear (609) is welded and fixed to the first driven shaft (610). A synchronous pulley (611) is welded and fixed to both the first driven shaft (610) and the second driven shaft (613). A synchronous belt (612) is connected to the synchronous pulley (611). A turntable (614) is welded and fixed to the bottom end of the second driven shaft (613). A transfer groove (615) is provided through the turntable (614). A first unloading groove (616) is provided through the mounting plate (5).

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

6. The high-speed precision stamping device for a mobile phone shielding cover according to claim 1, 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 sets of the first positioning frames (907) are provided, with each set containing two frames at equal angles within the connecting frame (7). 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 one-to-one with the lower template (910). The sum of the lengths of the two lower templates (910) is less than the length of the second feeding groove (8). The width of the second feeding groove (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 locking rod (909) is symmetrically distributed on both sides of the first positioning frame (907). The first locking rod (909) corresponds one-to-one with the first locking groove (911).

7. The high-speed precision stamping device for a mobile phone shielding cover according to claim 1, characterized in that: A liquid storage frame (917) is welded and fixed inside the connecting frame (7). A fixing pipe (918) is connected to the top side of the liquid storage frame (917). A solenoid valve (919) is installed on the fixing pipe (918). A connecting pipe (920) is welded and fixed to the liquid storage frame (917). A small nozzle (921) is installed on the connecting pipe (920). A conveying cylinder (922) is connected to the end of the connecting pipe (920). A screw rod (923) is rotatably connected inside the conveying cylinder (922). A coil (924) is welded and fixed to the top of the screw rod (923). A second traction rope (925) is wound around the coil (924). The second traction rope (925) slides through and is connected to the top side of the liquid storage frame (917). The end of the second traction rope (925) is fixedly connected to the first The connecting pipe (920) is slidably connected through the top side of the first positioning frame (907) and the top side of the lower template (910) at the side end of the positioning frame (907). A limit frame (926) is welded and fixed on the inner bottom surface of the liquid storage frame (917). 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). There are four liquid storage frames (917). The four liquid storage frames (917) are distributed at equal angles in the connecting frame (7). The connecting pipe (920) is symmetrically distributed on both sides inside the liquid storage frame (917). The connecting pipe (920) corresponds one-to-one with the spiral rod (923) through the conveying cylinder (922). The length of the spiral rod (923) is greater than the length of the conveying cylinder (922).

8. The high-speed precision stamping device for a 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) is rotatably connected to the fixed frame (11). The bottom end of the rotating shaft (605) is welded and fixed to the inner center of the connecting frame (7). There are four third feeding troughs (10). The four third feeding troughs (10) are distributed at equal angles on the fixed plate (1). The two third feeding troughs (10) on the left and right sides correspond one-to-one with the two collection boxes (21). The two third feeding troughs (10) on the front and rear sides correspond one-to-one with the two conveying devices (23). The collection box ( The width of 21) and the width of the conveying equipment (23) are both greater than the length of the third feeding trough (10). There are four second feeding troughs (8). The four second feeding troughs (8) are distributed at equal angles on the connecting frame (7). The length and width of the second feeding trough (8) are equal to the length and width of the third feeding trough (10). The second feeding trough (8) corresponds one-to-one with the third feeding trough (10). The hydraulic rods (14) are symmetrically distributed on the left and right sides of the top plate (4). The hydraulic rods (14) correspond one-to-one with the upper template (18) through the second positioning frame (15).

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