Three-way punching machine

Abstract

The invention relates to the technical field of punching machines, in particular to a three-way punching machine which comprises a base, first to fourth metal plate blocks are sequentially arranged on the base, a hydraulic mechanism, a machining table and a special punching head are installed on the third metal plate block, and a material collecting box is arranged in the base; an automatic feeding and discharging mechanism, a deburring mechanism and a driving mechanism are further arranged; the automatic feeding mechanism is composed of a pushing air cylinder, a feeding channel, a pushing channel and the like, and automatic feeding is achieved. The automatic discharging mechanism completes discharging through cooperation of a receiving air cylinder and a clamping jaw. The deburring mechanism is arranged in the machining table, and burrs at the bottom of a punched hole of the workpiece are automatically cleaned after stamping is finished; the driving mechanism is used for driving the three groups of deburring mechanisms to operate synchronously; in addition, an adjusting wrench is arranged to adjust the width of the material channel and the machining table, and a photosensitive sensor controls operation of the assembly line. According to the punching machine, through automatic feeding and discharging and integrated deburring functions, the production efficiency is improved, the personnel safety is guaranteed, the punching machine can adapt to workpieces of different specifications, the equipment multifunctionality is improved, and the punching machine is suitable for various punching machining scenes.

Description

Technical Field

[0001] The present invention relates to the technical field of stamping machines, and particularly to a three-way stamping machine. Background Art

[0002] A press includes a punching press and a hydraulic press, also known as a stamping machine, which is a general-purpose machining equipment with a delicate structure. The press can be widely used in processes such as cutting, punching, blanking, bending, riveting, and forming. By applying a strong pressure to metal workpieces, plastic deformation and fracture occur to process them into parts. Due to factors such as process requirements for workpieces in actual production, meeting the processing of workpieces with different shapes, improving the practicality of the press, perfecting its functionality, and enhancing the working efficiency of the press, a three-way stamping machine was born.

[0003] However, there are many drawbacks in the existing three-way stamping machines. In the loading and unloading process, it mostly relies on manual operation, and the operator needs to frequently contact the processing area. During the stamping process, the equipment runs at high speed, posing a risk of pinching. The high temperature generated during processing may cause burns. In terms of the integration level of the equipment, traditional equipment lacks a reasonable integrated design, and the stamping and deburring processes are separated from each other. After stamping, additional equipment or manual labor is required to handle the burrs on the workpiece, which not only increases the production process and time costs but also reduces the production efficiency. In addition, the width of the material channels of existing stamping machines is mostly fixed and cannot be adjusted according to workpieces of different specifications. This makes the equipment less adaptable when facing workpieces of different sizes, limits the versatility of the equipment, and enterprises have to equip multiple stamping devices for workpieces of different specifications, increasing the equipment procurement and maintenance costs. The present invention aims to effectively solve the above problems by designing a fully automatic loading and unloading mechanism, an adjustable material channel, and an integrated deburring function. Summary of the Invention

[0004] The purpose of the present invention is to provide a three-way stamping machine. Through the mutual cooperation of the feeding channel, the pushing channel, the pushing cylinder, and the receiving cylinder, it replaces the operation method of the operator using hands, clips, or other auxiliary operation tools, improves the automation level of the equipment, and can adjust the working speeds of the material channel and the cylinder according to different processing requirements, thereby improving the production efficiency of the stamping machine.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A three-way stamping machine, comprising:

[0007] Base, the base is fixedly installed on the ground, and a first sheet metal block, a second sheet metal block, a third sheet metal block and a fourth sheet metal block are installed on the top wall of the base. The first sheet metal block, the second sheet metal block, the third sheet metal block and the fourth sheet metal block are arranged in sequence along the horizontal axis of the top wall of the base, forming a linear layout from left to right. A hydraulic mechanism is installed on the top wall of the third sheet metal block. The hydraulic mechanism includes a stamping head and a processing table installed on the top wall of the third sheet metal block. A material collection box is arranged inside the base, and the material collection box is located directly below the third sheet metal block and the fourth sheet metal block. A material collection notch is formed on the third sheet metal block and is matched with the material collection box;

[0008] Automatic feeding mechanism, an automatic feeding mechanism for automatically feeding the workpieces is installed on the top walls of the first sheet metal block and the second sheet metal block;

[0009] Automatic discharging mechanism, an automatic discharging mechanism for automatically discharging the workpieces is installed on the top wall of the fourth sheet metal block;

[0010] Deburring mechanism, a deburring mechanism for grinding the burrs at the bottom of the workpiece is arranged inside the processing table. There are three groups of the deburring mechanisms, which are respectively arranged on the top wall and the left and right side walls of the processing table;

[0011] Driving mechanism, a driving mechanism for driving the deburring mechanism to work is arranged among the three groups of deburring mechanisms;

[0012] Preferably, the automatic feeding mechanism includes a pushing cylinder fixedly installed on the top wall of the first sheet metal block. A feeding channel and a pushing channel are arranged on the top wall of the second sheet metal block. The feeding channel and the pushing channel are arranged in a right-angled shape. The feeding channel is located on the left side of the pushing channel and is connected to the assembly line. A pushing plate is fixedly installed on the piston rod of the pushing cylinder. The pushing plate is located in the pushing channel, and the two side walls of the pushing plate are attached to the two side walls of the pushing channel. The two side walls of the workpiece are respectively attached to the two side walls of the feeding channel and the pushing channel.

[0013] Preferably, a compression spring is installed at the front end of the piston rod of the pushing cylinder, and the other end of the compression spring is installed on the pushing plate.

[0014] Preferably, an adjusting wrench one for adjusting the widths of the feeding channel and the pushing channel is installed on the second sheet metal block, and an adjusting wrench two for adjusting the width of the processing table is installed on the third sheet metal block.

[0015] Preferably, a cover plate is slidably installed at the top end of the pushing channel, and a buckle matched with the cover plate is arranged at the top end of the pushing channel.

[0016] Preferably, the automatic blanking mechanism includes a material receiving cylinder installed on the four top walls of the sheet metal block. A connecting plate is installed on the piston rod of the material receiving cylinder. Two clamping jaws are installed on the connecting plate. The two clamping jaws are symmetrical to each other. Both clamping jaws are servo electric clamping jaws. Chamfers are provided on both sides of the top end of the processing table. Right-angled cutting openings are symmetrically provided at the lower right end of the processing table. Both clamping jaws are offset from the left and right outer walls of the processing table.

[0017] Preferably, a photosensitive sensor for detecting the position state of the workpiece and feeding back the detection signal to the production line is installed on the top wall of the second sheet metal block.

[0018] Preferably, the deburring mechanism includes balls, a grinding disc, grinding blocks and support springs. A rotating cavity with a T-shaped cross-section is provided inside the processing table. The grinding disc is rotatably arranged in the rotating cavity through the balls. The bottom of the grinding disc extends out of the processing table. A die hole is provided in the center of the grinding disc for stamping the workpiece. A plurality of grooves are evenly provided around the die hole on the top surface of the grinding disc. The grinding blocks are elastically connected to the inside of the grooves through the support springs for rotating and grinding the burrs on the bottom surface of the workpiece. The grinding blocks are in close contact with the bottom surface of the workpiece under the elastic action of the support springs to complete the deburring operation.

[0019] Preferably, the driving mechanism includes a first gear, a second gear, a main shaft, a first bevel gear, a second bevel gear, a long shaft and an impeller. The driving mechanism is arranged between the three deburring mechanisms inside the processing table. The first gear is fixedly connected to the outer wall of the bottom of the grinding disc. The second gear is rotatably installed on one side of the first gear through the main shaft and meshes with the first gear. The top end of the main shaft is rotatably connected to the top wall of the processing table. A first bevel gear is fixedly connected to the outer wall of the bottom of the main shaft. The two ends of the long shaft are rotatably connected to the side walls of the processing table. One end of the long shaft penetrates through the side wall of the processing table for the convenience of installing the long shaft. A second bevel gear meshing with the first bevel gear is fixedly installed on the long shaft. Two other second gears are respectively installed at the two ends of the long shaft. The two other second gears respectively mesh with the first gears located on the side to achieve synchronous transmission at three positions; An impeller is coaxially and fixedly arranged on the outer wall of the long shaft. The impeller rotates to drive the grinding discs on both sides to rotate, and drives the grinding disc located at the top to rotate through the meshing of the first bevel gear and the second bevel gear; The gas ejected from the bottom of the ventilation groove is along the tangential direction of the impeller blades.

[0020] Preferably, the bottom of the punching head is in an inclined shape. An upper pressing plate is fixedly connected to the side of the punching head away from the workpiece. The lower surface of the upper pressing plate is elastically connected with a lower pressing plate through a plurality of buffer springs. A ventilation groove is provided in the center of the punching head located above the processing table.

[0021] Preferably, the bottom of the punching head is a circular arc inclined surface.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. The present invention realizes full-process automated loading and unloading through the right-angle layout design of the push cylinder, feed channel and push channel of the automatic loading mechanism, combined with the servo electric clamp and receiving cylinder of the automatic unloading mechanism, eliminating the safety hazards of manual operation (such as pinching and scalding); at the same time, the modular integrated design (feeding, stamping, deburring, and receiving) reduces the equipment footprint, optimizes the utilization rate of the workshop space, and shortens the single-piece processing cycle through timing control to improve production efficiency.

[0024] 2. The present invention can quickly adjust the width of the feeding channel, the pushing channel and the processing table through the linkage adjustment mechanism of the adjusting wrench 1 and the adjusting wrench 2 to adapt to workpieces of different sizes (such as multi-hole or special-shaped workpieces). The versatility of the equipment is improved, and there is no need to replace the mold when changing the processing specifications, saving adjustment time.

[0025] 3. The bottom of the punch head of the present invention is in the shape of an inclined surface or is optimized to be an arc-shaped inclined surface. The present invention performs punching and punching in the form of shearing, gradually increasing the contact area during the punching process, effectively dispersing the impact force, reducing burr formation, and reducing the load on the hydraulic mechanism, thereby extending the service life of the equipment. The close fit between the lower pressure plate and the workpiece also prevents the workpiece from curling and deforming, thereby improving the stamping accuracy.

[0026] 4. The present invention integrates three groups of deburring mechanisms in the processing table. After the stamping is completed, the burrs on the bottom of the punched hole of the workpiece can be automatically scraped off, avoiding the secondary processing process. The high-pressure airflow sprayed from the ventilation groove drives the impeller, and the synchronous rotation of the grinding disc is achieved through gear linkage. The multi-directional grinding block grinds the burrs on the bottom surface of the workpiece at one time, thereby improving the deburring efficiency. At the same time, the air flow disturbance can cool the stamping area and blow away the waste chips, avoiding clogging of the grinding disc, reducing the maintenance frequency, and requiring no additional energy consumption.

[0027] 5. The photosensitive sensor of the present invention monitors the position of the workpiece in real time, and links with the control system to control the start and stop of the assembly line to ensure that the pushing action is accurate and orderly. The bevel and right-angle cutting openings of the processing table are designed to optimize the positioning of the clamping jaws to avoid stamping interference. The high-precision clamping of the servo electric clamping jaws can reduce the positioning error of the workpiece and improve the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0029] Figure 2 It is a right side oblique stereoscopic view of the overall structure of the present invention;

[0030] Figure 3 It is a side view of the overall structure of the present invention;

[0031] Figure 4 It is a top view of the overall structure of the present invention;

[0032] Figure 5 For the present invention Figure 2 Enlarged view of the structure at A;

[0033] Figure 6 For the present invention Figure 1 Enlarged view of the structure at B;

[0034] Figure 7 Cross-sectional view of the processing table of the present invention;

[0035] Figure 8 Structural diagram of the punching head of the present invention;

[0036] Figure 9 Schematic diagram of the air outlet direction of the air vent groove in the punching head of the present invention;

[0037] Figure 10 Top view of the grinding disc of the present invention.

[0038] In the figure: 1, base; 2, first sheet metal block; 3, second sheet metal block; 4, third sheet metal block; 5, fourth sheet metal block; 6, hydraulic mechanism; 61, punching head; 611, air vent groove; 62, upper pressure plate; 63, buffer spring; 64, lower pressure plate; 7, processing table; 71, deburring mechanism; 711, ball; 712, grinding disc; 713, grinding block; 714, support spring; 72, driving mechanism; 721, first gear; 722, second gear; 723, main shaft; 724, first bevel gear; 725, second bevel gear; 726, long shaft; 727, impeller; 8, material receiving box; 9, material receiving slot opening; 11, pushing cylinder; 12, feeding channel; 13, pushing channel; 14, pushing plate; 15, workpiece; 16, compression spring; 17, first adjusting wrench; 18, second adjusting wrench; 19, cover plate; 20, buckle; 21, material receiving cylinder; 22, connecting plate; 23, clamping jaw; 24, photosensitive sensor; 25, bevel angle; 26, right-angled cutting opening. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described below are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] Refer to Figures 1 to 10, the present invention provides a three-way stamping machine, which includes a base 1 fixedly installed on the ground. On the top wall of the base 1, there are installed a sheet metal block one 2, a sheet metal block two 3, a sheet metal block three 4, and a sheet metal block four 5. The sheet metal block one 2, the sheet metal block two 3, the sheet metal block three 4, and the sheet metal block four 5 are arranged in sequence along the horizontal axis of the top wall of the base 1, forming a linear layout from left to right. On the top wall of the sheet metal block three 4, there is installed a hydraulic mechanism 6, and the hydraulic mechanism 6 includes a stamping head 61 and a processing table 7 installed on the top wall of the sheet metal block three 4;

[0041] Inside the base 1, there is a material collection box 8, and the material collection box 8 is located directly below the sheet metal block three 4 and the sheet metal block four 5. On the sheet metal block three 4, there is a material collection notch 9 that cooperates with the material collection box 8;

[0042] An automatic feeding mechanism is installed on the top walls of the sheet metal block one 2 and the sheet metal block two 3 for automatically feeding the workpiece 15;

[0043] An automatic discharging mechanism is installed on the top wall of the sheet metal block four 5 for automatically discharging the workpiece 15;

[0044] A deburring mechanism 71 is provided inside the processing table 7 for removing the burrs at the bottom of the workpiece 15 during the return stroke of stamping. There are three groups of the deburring mechanism 71, which are respectively arranged on the top wall and the left and right side walls of the processing table 7;

[0045] A driving mechanism 72 is arranged between the three groups of deburring mechanisms 71 for driving the deburring mechanism 71 to work;

[0046] The automatic feeding mechanism includes a pushing cylinder 11 fixedly installed on the top wall of the sheet metal block one 2. On the top wall of the sheet metal block two 3, there are a feeding channel 12 and a pushing channel 13. The feeding channel 12 and the pushing channel 13 are arranged in a right-angled shape. The feeding channel 12 is located on the left side of the pushing channel 13, and the feeding channel 12 is connected to the assembly line. A pushing plate 14 is fixedly installed on the piston rod of the pushing cylinder 11. The pushing plate 14 is located inside the pushing channel 13, and the two side walls of the pushing plate 14 are in close contact with the two side walls of the pushing channel 13. The two side walls of the workpiece 15 are respectively in close contact with the two side walls of the feeding channel 12 and the pushing channel 13. By adopting the automated combination of the feeding channel 12, the pushing channel 13, and the pushing cylinder 11, the workpiece 15 enters the feeding channel 12 from the assembly line and after passing through the pushing channel 13, under the action of the pushing cylinder 11, the workpiece 15 is pushed onto the processing table 7, changing the existing manual feeding method and solving the problem of potential safety hazards to the operators. The width of the pushing plate 14 is the same as the length of the workpiece 15, and the length of the pushing plate 14 is the same as the length of the processing table 7, which is beneficial to the close contact between the pushing plate 14, the workpiece 15, and the processing table 7, ensuring that the workpiece 15 is accurately pushed onto the processing table 7.

[0047] As an implementation mode of the present invention, refer to Figure 1 , a compression spring 16 is installed at the front end of the piston rod of the material pushing cylinder 11, and the other end of the compression spring 16 is installed on the material pushing plate 14; to avoid position errors when the workpiece 15 is pushed into the processing table 7, after the piston rod of the material pushing cylinder 11 fully extends, the sum of the length of its piston rod and the length of the material pushing plate 14 is greater than the length of the processing table 7. Therefore, when the material pushing cylinder 11 pushes the workpiece 15, the workpiece 15 will be completely pushed into the rear positioning area. Since the compression spring 16 will be compressed and will not affect the material pushing action, the positioning position of the workpiece 15 is guaranteed.

[0048] As an implementation mode of the present invention, refer to Figure 1 , an adjusting wrench 17 for adjusting the widths of the feeding channel 12 and the material pushing channel 13 is installed on the sheet metal block two 3, and an adjusting wrench 18 for adjusting the width of the processing table 7 is installed on the sheet metal block three 4; by rotating the adjusting wrench 17 and the adjusting wrench 18, the widths of the feeding channel 12 and the material pushing channel 13 and the width of the processing table 7 are adjusted under the horizontal movement of the slider to adapt to the processing of workpieces 15 of different specifications and sizes, improving the flexibility and versatility of the equipment, and the widths adjusted for the feeding channel 12 and the material pushing channel 13 should correspond to the width adjusted for the processing table 7.

[0049] As an implementation mode of the present invention, refer to Figure 1 and Figure 6 , a cover plate 19 is slidably installed at the top of the material pushing channel 13; a buckle 20 that cooperates with the cover plate 19 is provided at the top of the material pushing channel 13; a chute is opened at the top of the material pushing channel 13, and the cover plate 19 can slide on the top of the feeding channel 12 for easy disassembly and assembly, and the width of the cover plate 19 is also adjustable and cooperates with the width adjustment of the material pushing channel 13. The setting of the cover plate 19 can prevent the material pushing plate 14 from jittering due to the fast pushing speed when pushing the workpiece 15, thereby affecting the workpiece 15 from jumping and shifting and not being able to be pushed onto the processing table 7.

[0050] As an implementation mode of the present invention, refer to Figures 1 - 5, the automatic blanking mechanism includes a receiving cylinder 21 installed on the top wall of the sheet metal block four 5. A connecting plate 22 is installed on the piston rod of the receiving cylinder 21, and two clamping jaws 23 are installed on the connecting plate 22. The two clamping jaws 23 are symmetric to each other, and both clamping jaws 23 are servo-electric clamping jaws 23; bevels 25 are provided on both sides of the top end of the processing table 7; right-angled cutting openings 26 are symmetrically provided at the lower right end of the processing table 7. Both clamping jaws 23 are offset from the left and right outer walls of the processing table 7; the bevels 25 provided on both sides of the top end of the processing table 7 enable the workpiece 15 to smoothly enter the processing table 7 when the pusher plate 14 pushes the workpiece 15. To ensure the stability of the stamping of the workpiece 15, after the workpiece 15 is pushed into the processing table 7, the receiving cylinder 21 installed on the top wall of the sheet metal block four 5 extends, so that the two clamping jaws 23 installed on the connecting plate 22 open and firmly clamp the workpiece 15. The right-angled cutting openings 26 provided at the lower right end of the processing table 7 are conducive to the stable clamping of the workpiece 15 by the clamping jaws 23 to avoid interfering with the stamping work. Moreover, the position of the clamping jaws 23 just corresponds to the positioning position of the workpiece 15, that is, the workpiece 15 can position itself through the clamping jaws 23. When the pusher plate 14 pushes the workpiece 15 onto the processing table 7, the clamping jaws 23 position the workpiece 15. After the workpiece 15 is stamped, the two clamping jaws 23 always remain in the clamping state. After the piston rod of the receiving cylinder 21 contracts and moves, it drives the two clamping jaws 23 to move to the receiving slot 9. At this time, the clamping jaws 23 are loosened to put the workpiece 15 into the receiving box 8 for collection.

[0051] As an implementation manner of the present invention, refer to Figure 4 , a photosensitive sensor 24 for detecting the position state of the workpiece 15 and feeding back the detection signal to the production line is installed on the top wall of the sheet metal block two 3; when the workpiece 15 flows from the feeding channel 12 into the pushing channel 13, after the photosensitive sensor 24 installed on the top wall of the sheet metal block two 3 detects that the workpiece 15 is in place, it feeds back its detection signal to the control system to pause the operation of the production line to ensure the smooth operation of the pusher plate 14 and avoid interference due to the continuous transmission of the workpiece 15 on the production line. When the pusher plate 14 pushes the workpiece 15 into the processing table 7 and returns to its original position, it feeds back its reset signal to the control system, and the production line can restart. Then the next workpiece is sent into the pushing channel 13, and so on in a cycle to ensure the orderly operation of the automatic pushing work.

[0052] As an implementation manner of the present invention, refer to Figure 7 , Figure 9 and Figure 10, the deburring mechanism 71 includes a ball 711, a grinding disc 712, a grinding block 713 and a support spring 714. A rotating cavity with a T-shaped cross-section is formed inside the processing table 7. The grinding disc 712 is rotatably arranged in the rotating cavity through the ball 711. The bottom of the grinding disc 712 extends out of the processing table 7. A die hole is formed in the center of the grinding disc 712 for stamping the workpiece 15. A plurality of grooves are evenly formed around the die hole on the top surface of the grinding disc 712. The grinding block 713 is elastically connected to the inside of the groove through the support spring 714 for rotating and grinding the burrs on the bottom surface of the workpiece 15. The grinding block 713 is in close contact with the bottom surface of the workpiece 15 under the elastic action of the support spring 714 to complete the deburring operation.

[0053] During the stamping process, the support spring 714 is in a compressed state, and the grinding block 713 is pressed into the groove, and it is ensured that the height of the grinding block 713 is equal to the depth of the groove on the grinding disc 712, so as to ensure that the grinding block 713 can provide sufficient supporting force during stamping, avoid the punching and stamping deformation of the workpiece 15, and avoid affecting the stamping work. With the completion of stamping, the downward impact force disappears, and the grinding block 713 abuts against the vicinity of the punching on the lower surface of the workpiece 15 under the action of the support spring 714, and better contacts the burrs.

[0054] As an implementation manner of the present invention, refer to Figure 7 and Figure 9 , the driving mechanism 72 includes a first gear 721, a second gear 722, a main shaft 723, a first bevel gear 724, a second bevel gear 725, a long shaft 726 and an impeller 727. The driving mechanism 72 is arranged between the three deburring mechanisms 71 inside the processing table 7. The first gear 721 is fixedly connected to the outer wall of the bottom of the grinding disc 712. The second gear 722 is rotatably installed on the side of the first gear 721 through the main shaft 723 and meshes with the first gear 721. The top end of the main shaft 723 is rotatably connected to the top wall of the processing table 7. A first bevel gear 724 is fixedly connected to the outer wall of the bottom of the main shaft 723. Both ends of the long shaft 726 are rotatably connected to the side wall of the processing table 7. One end of the long shaft 726 penetrates through the side wall of the processing table 7 to facilitate the installation of the long shaft 726. A second bevel gear 725 meshing with the first bevel gear 724 is fixedly installed on the long shaft 726. Two other second gears 722 are respectively installed at both ends of the long shaft 726. The two other second gears 722 respectively mesh with the two first gears 721 located on the side to achieve synchronous transmission at three positions; an impeller 727 is coaxially and fixedly arranged on the outer wall of the long shaft 726. The impeller 727 rotates to drive the grinding discs 712 on both sides to rotate, and drives the grinding disc 712 located at the top to rotate through the meshing of the first bevel gear 724 and the second bevel gear 725; an air vent groove 611 is arranged at the center of the stamping head 61 above the processing table 7 for introducing air as the power source of the driving mechanism 72. The gas ejected from the bottom of the air vent groove 611 is along the tangential direction of the blades of the impeller 727 and can drive the impeller 727 to rotate.

[0055] After stamping is completed, the gas ejected from the bottom of the ventilation groove 611 drives the impeller 727 to start rotating along the tangential direction of the blades of the impeller 727, thereby driving the long shaft 726 to rotate. The second gears 722 at both ends of the long shaft 726 also rotate accordingly. Through the linkage of the first bevel gear 724 and the second bevel gear 725, the main shaft 723 also rotates synchronously, thereby driving the second gears 722 on the main shaft 723 to rotate synchronously. The three second gears 722 drive the first gears 721 meshing with them to rotate, thereby driving the three grinding discs 712 to rotate synchronously, driving multiple groups of grinding blocks 713 to simultaneously grind the burrs on the lower surface of the workpiece 15. This process does not require additional electrical energy, and the three deburring mechanisms 71 operate simultaneously with good synchronism, which can improve production efficiency. In actual production, by optimizing the transmission ratio of the gears and bevel gears, the rotation speed of the grinding disc 712 can reach the best deburring effect;

[0056] During actual operation, by adjusting the air pressure in the ventilation groove 611, the rotation speed of the impeller 727 can be controlled, and then the grinding speed of the deburring mechanism 71 can be adjusted to adapt to workpieces of different materials and processing requirements; during the rotation process, the impeller 727 will disturb the air flow in the middle cavity of the processing table 7, which can reduce the temperature in the stamping area, prevent scalding during manual operation, and improve the service life of the stamping machine; at the same time, the air blown out from the ventilation groove 611 can also timely disperse the waste chips ground from the bottom of the workpiece 15, preventing accumulation in the grinding disc 712 and ensuring the continuous and efficient progress of the deburring work.

[0057] As an embodiment of the present invention, refer to Figure 7 , the bottom of the stamping head 61 is in an inclined plane shape. In a traditional stamping machine, the flat punch contacts the workpiece comprehensively instantaneously during stamping, and the huge impact force will act on the workpiece and the hydraulic mechanism 6 intensively in a short time, which may cause premature wear of the seals inside the hydraulic mechanism 6. Frequent maintenance not only increases costs but also affects the production progress; while the stamping head 61 of the present invention has a gradually increasing contact area with the workpiece 15 during the downward movement. This progressive contact method can disperse the impact load, greatly reduce the impact force during a single stamping, avoid fatigue damage of the hydraulic mechanism 6 due to instantaneous overload, and thus extend the service life of the equipment.

[0058] As an embodiment of the present invention, refer to Figure 8, the bottom of the stamping head 61 is further optimized to be an arc-shaped inclined plane, forming a sharp linear contact edge. At the initial stage of stamping, the arc-shaped edge cuts into the workpiece 15 at a high linear speed, realizing the pre-separation of materials through shear action, greatly reducing the stamping peak pressure and effectively reducing energy consumption. At the same time, the arc-shaped inclined plane can guide the material to flow along the tangent direction during the stamping process, inhibiting the formation of burrs. Specifically, during the stamping stage, the shear force of the arc edge makes the fracture surface of the material smoother, and the gradually increasing contact area forms a secondary flattening effect on the edge of the fractured material, reducing the burr height.

[0059] As an implementation mode of the present invention, referring to Figure 7 , a upper pressing plate 62 is fixedly connected to the side of the stamping head 61 far from the workpiece 15. The lower surface of the upper pressing plate 62 is elastically connected to a lower pressing plate 64 through a plurality of buffer springs 63. When the stamping head 61 presses downward, the lower pressing plate 64 will first contact the workpiece 15. As the stamping head 61 continues to move downward, the lower pressing plate 64 can press the workpiece 15 tightly and compress the buffer springs 63, playing a role in stabilizing the workpiece 15, effectively preventing the workpiece 15 from curling and deforming, and improving the stamping accuracy. After stamping, under the resilience of the buffer springs 63, the lower pressing plate 64 can still apply a certain pressure to the workpiece 15, cooperating with the deburring mechanism 71 to facilitate deburring.

[0060] Working principle: Before the processing work starts, first, the pushing cylinder 11 remains in a contracted state, the receiving cylinder 21 remains in an extended state, and the hydraulic mechanism 6 remains in its initial state. The hydraulic mechanism 6 includes a hydraulic press installed above the sheet metal block three 4. When a workpiece 15 is transported into the feeding channel 12 and flows into the pushing channel 13 on the assembly line, after the photosensitive sensor 24 detects that the workpiece 15 is in place, it feeds back its detection signal to the control system to pause the operation of the assembly line to ensure the smooth operation of the pushing plate 14 and avoid interference caused by the continuous transmission of workpieces 15 on the assembly line;

[0061] Then the pushing cylinder 11 starts to extend. The pushing cylinder 11 moves to its maximum stroke to push the workpiece 15 onto the processing table 7 to ensure that the workpiece 15 will be completely pushed into the positioned position point. The chamfers 25 opened on both sides of the top of the processing table 7 enable the workpiece 15 to smoothly enter the processing table 7 when the pushing plate 14 pushes the workpiece 15. Then, with the receiving cylinder 21 in the extended state, the two jaws 23 installed on the connecting plate 22 open and firmly clamp the workpiece 15. The right-angled cutting opening 26 opened at the lower right end of the processing table 7 is conducive to the clamping of the workpiece 15 by the jaws 23 to avoid interfering with the stamping work. During the stamping work, the jaws 23 will always grasp the workpiece 15 to play a stabilizing role. At this time, the pushing cylinder 11 contracts to restore its initial state, and then the hydraulic mechanism 6 moves downward to start punching the workpiece 15.

[0062] The bottom of the stamping head 61 is an inclined circular arc, and the sharp linear edge can provide a certain shearing force during the stamping process. During the stamping process, as the contact area between the bottom of the stamping head 61 and the workpiece 15 gradually increases, compared with the traditional flat punch, it can greatly reduce the impact force during a single stamping, improve the service life of the hydraulic mechanism 6, and effectively inhibit the generation of burrs; during the stamping process, as the stamping head 61 descends, the lower pressing plate 64 will press the workpiece 15 tightly and compress the buffer spring 63, which can effectively prevent the workpiece 15 from curling and deforming, and improve the stamping accuracy;

[0063] After the stamping is completed, the gas ejected from the bottom of the ventilation groove 611 drives the impeller 727 to start rotating along the tangential direction of the blades of the impeller 727, so as to drive the three deburring mechanisms 71 to operate synchronously through gear linkage, and then drive the three grinding discs 712 to rotate synchronously, driving multiple groups of grinding blocks 713 to grind the burrs on the lower surface of the workpiece 15 at the same time. This process does not require additional electric energy, and the three deburring mechanisms 71 act simultaneously with good synchronism, which can improve the production efficiency; moreover, the support spring 714 is in a compressed state during the stamping process, and the height of the grinding block 713 is ensured to be equal to the depth of the groove on the grinding disc 712, so as to ensure that the grinding block 713 can provide sufficient support force during stamping to avoid the punching and stamping deformation of the workpiece. As the stamping is completed and the downward impact force disappears, the grinding block 713 abuts against the vicinity of the punching on the lower surface of the workpiece 15 under the action of the support spring 714, and better contacts the burrs. Under the action of the resilience of the buffer spring 63, the lower pressing plate 64 can still apply a certain pressure to the workpiece 15, making the workpiece 15 contact the grinding block 713 more closely, so as to improve the deburring effect;

[0064] At the same time, the impeller 727 will disturb the air flow in the middle cavity of the processing table 7 during the rotation process, which can reduce the temperature of the stamping area, prevent scalding during manual operation, and improve the service life of the stamping machine; the air blown out from the ventilation groove 611 can also blow away the waste chips ground from the bottom of the workpiece 15 in time to prevent accumulation in the grinding disc 712;

[0065] After the burrs are removed, at this time, the piston rod of the material receiving cylinder 210 contracts and drives the two clamping claws 23 to move to the material receiving slot 9. At this time, the clamping claws 23 are loosened so that the workpiece 15 falls into the material receiving box 8 for collection. Finally, the material receiving cylinder 21 extends to restore the initial state, and the two clamping claws 23 open to restore the initial state. Thus, the feeding, processing, and material receiving processes of the workpiece 15 are completed. And it is necessary to wait until the material receiving cylinder 21 and the two clamping claws 23 both return to the initial state before the assembly line can restart to send the workpiece 15 into the feeding channel 13. Only when the photosensitive sensor 24 detects that the workpiece 15 is in place can the feeding cylinder 11 start to extend. In this way, it circulates repeatedly to ensure the orderly operation of the automatic feeding work.

[0066] The above embodiments have shown and described the basic working principle, the main technical features and advantages of the present invention. However, a three-way stamping machine designed by the present invention is not limited by the above embodiments, and there will be various changes and improvements in different embodiments. These changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-way stamping machine, characterized in that, Comprising: A base (1), the base (1) is fixedly installed on the ground, on the top wall of the base (1), there are installed a first sheet metal block (2), a second sheet metal block (3), a third sheet metal block (4) and a fourth sheet metal block (5). The first sheet metal block (2), the second sheet metal block (3), the third sheet metal block (4) and the fourth sheet metal block (5) are arranged in sequence along the horizontal axis of the top wall of the base (1), forming a linear layout from left to right. On the top wall of the third sheet metal block (4), there is installed a hydraulic mechanism (6). The hydraulic mechanism (6) includes a stamping head (61) and a processing table (7) installed on the top wall of the third sheet metal block (4). Inside the base (1), there is a material receiving box (8). The material receiving box (8) is located vertically below the third sheet metal block (4) and the fourth sheet metal block (5). On the third sheet metal block (4), there is a material receiving notch (9) that cooperates with the material receiving box (8); An automatic feeding mechanism, on the top walls of the first sheet metal block (2) and the second sheet metal block (3), there is installed an automatic feeding mechanism for automatically feeding the workpiece (15); An automatic discharging mechanism, on the top wall of the fourth sheet metal block (5), there is installed an automatic discharging mechanism for automatically discharging the workpiece (15); A deburring mechanism (71), inside the processing table (7), there is a deburring mechanism (71) for grinding the burrs at the bottom of the workpiece (15). There are three groups of the deburring mechanisms (71), which are respectively arranged on the top wall and the left and right side walls of the processing table (7); A driving mechanism (72), between the three groups of the deburring mechanisms (71), there is a driving mechanism (72) for driving the deburring mechanism (71) to work.

2. The three-way stamping machine according to claim 1, characterized in that: The automatic feeding mechanism includes a pushing cylinder (11) fixedly installed on the top wall of the first sheet metal block (2). On the top wall of the second sheet metal block (3), there are a feeding channel (12) and a pushing channel (13). The feeding channel (12) and the pushing channel (13) are arranged in a right-angled shape. The feeding channel (12) is located on the left side of the pushing channel (13), and the feeding channel (12) is connected to the production line. On the piston rod of the pushing cylinder (11), there is fixedly installed a pushing plate (14). The pushing plate (14) is located inside the pushing channel (13). The two side walls of the pushing plate (14) are in contact with the two side walls of the pushing channel (13). The two side walls of the workpiece (15) are respectively in contact with the two side walls of the feeding channel (12) and the pushing channel (13).

3. The three-way stamping machine according to claim 2, characterized in that: At the front end of the piston rod of the pushing cylinder (11), there is installed a compression spring (16). The other end of the compression spring (16) is installed on the pushing plate (14).

4. A three-way stamping machine according to claim 2, characterized in that: On the second sheet metal block (3), there is installed an adjusting wrench one (17) for adjusting the widths of the feeding channel (12) and the pushing channel (13). On the third sheet metal block (4), there is installed an adjusting wrench two (18) for adjusting the width of the processing table (7); At the top of the pushing channel (13), there is a slidingly installed cover plate (19); At the top of the pushing channel (13), there is a buckle (20) that cooperates with the cover plate (19).

5. The three-way stamping machine according to claim 2, characterized in that: The automatic blanking mechanism includes a blanking cylinder (21) installed on the top wall of the sheet metal block four (5). A connecting plate (22) is installed on the piston rod of the blanking cylinder (21). Two clamping jaws (23) are installed on the connecting plate (22). The two clamping jaws (23) are symmetric to each other, and both of the two clamping jaws (23) are servo electric clamping jaws (23). Right-angled cutting openings (26) are symmetrically formed at the lower right end of the processing table (7). Both of the two clamping jaws (23) are offset from the left outer wall and the right outer wall of the processing table (7). Chamfers (25) are formed on both sides of the top end of the processing table (7).

6. A three-way stamping machine according to claim 1, characterized in that: A photosensitive sensor (24) for detecting the position state of the workpiece (15) and feeding back the detection signal to the assembly line is installed on the top wall of the sheet metal block two (3).

7. The three-way stamping machine according to claim 1, characterized in that: The bottom of the stamping head (61) is in an inclined plane shape. An air vent groove (611) is provided at the center of the stamping head (61) located above the processing table (7). An upper pressure plate (62) is fixedly connected to the side of the stamping head (61) away from the workpiece (15). The lower surface of the upper pressure plate (62) is elastically connected to a lower pressure plate (64) through a plurality of buffer springs (63).

8. A three-way stamping machine according to claim 7, characterized in that: The bottom of the stamping head (61) is a circular arc inclined plane.

9. A three-way stamping machine according to claim 7, characterized in that: The deburring mechanism (71) includes a ball (711), a grinding disc (712), a grinding block (713) and a support spring (714). A rotating cavity with a T-shaped cross-section is formed inside the processing table (7). The grinding disc (712) is rotatably arranged in the rotating cavity through the ball (711). The bottom of the grinding disc (712) extends out of the processing table (7). A die hole for stamping the workpiece (15) is formed at the center of the grinding disc (712). A plurality of grooves are evenly formed around the die hole on the top surface of the grinding disc (712). The grinding block (713) is elastically connected to the inside of the groove through the support spring (714). The grinding block (713) is in close contact with the bottom surface of the workpiece (15) under the elastic action of the support spring (714).

10. A three-way stamping machine according to claim 9, characterized in that: The driving mechanism (72) includes a first gear (721), a second gear (722), a main shaft (723), a first bevel gear (724), a second bevel gear (725), a long shaft (726) and an impeller (727). The driving mechanism (72) is arranged between three deburring mechanisms (71) inside the processing table (7). The first gear (721) is fixedly connected to the outer wall of the bottom of the grinding disc (712). The second gear (722) is rotatably installed on the side of the first gear (721) through the main shaft (723) and meshes with the first gear (721). The top end of the main shaft (723) is rotatably connected to the top wall of the processing table (7). A first bevel gear (724) is fixedly connected to the outer wall of the bottom of the main shaft (723). Both ends of the long shaft (726) are rotatably connected to the side wall of the processing table (7). One end of the long shaft (726) penetrates through the side wall of the processing table (7) to facilitate the installation of the long shaft (726). A second bevel gear (725) meshing with the first bevel gear (724) is fixedly installed on the long shaft (726). Two other second gears (722) are respectively installed at both ends of the long shaft (726), and the two other second gears (722) respectively mesh with the two first gears (721) located on the side, so as to realize synchronous transmission at three positions. An impeller (727) is coaxially and fixedly arranged on the outer wall of the long shaft (726). The impeller (727) rotates to drive the grinding discs (712) on both sides to rotate, and drives the grinding disc (712) located at the top to rotate through the meshing of the first bevel gear (724) and the second bevel gear (725). The gas ejected from the bottom of the ventilation groove (611) is along the tangential direction of the blades of the impeller (727).

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