A die-casting punching machine and a die-casting burr cutting process for a card reader housing

Abstract

The present invention relates to the technical field of post-treatment of castings, and discloses a die-casting punching machine and a die-casting burr cutting process for a card reader housing, including a main body, a movable seat and a fixed seat installed on the main body. A top die and a cutting knife are provided at the bottom of the movable seat. The top die is installed at the bottom of the movable seat through a telescopic component, and the top die is used for fixing the casting. By separately arranging the top die and the cutting knife, and providing a support block, a driving mechanism and a grinding device on the bottom die, during the punching operation, the casting is locally cut by the cutting knife, so that part of the gate waste is retained around the product, and thus the deformation generated during cutting occurs on this part of the gate waste. Then, the driving mechanism and the grinding device are used to further grind this part of the gate waste. This method can significantly reduce the deformation phenomenon generated by the product on the casting during the punching process, thereby improving the processing quality of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of post-treatment of castings, and particularly to a die-casting punching machine and a die-casting burr cutting process for a card reader housing. Background Art

[0002] The subsequent treatment of high-strength and tough aluminum alloy die-castings includes trimming and shearing of the edges or gates of the castings, heat treatment of the castings, and finishing of the surfaces of the castings. Among them, for the shearing of the gates, die-casting punching equipment is generally used. The principle is to place the casting on the lower die for positioning, and the hydraulic cylinder drives the upper die to move down. The cutting knife on the upper die shears the gate waste on the die-casting, and the main body of the product is retained. However, there are certain problems in actual application: different casting materials will produce different effects during die-casting punching. For high-toughness aluminum alloy casting materials, a relatively large punching force is required during punching. At this time, the cutting point of the workpiece rebounds due to elastic deformation. Secondly, the high-toughness material converts the absorbed energy into heat during the punching process, which easily causes deformation of the punching part. The above two situations both affect the accuracy of the product edge and reduce the product quality. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides a die-casting punching machine and a die-casting burr cutting process for a card reader housing, which have the advantages of higher punching quality and solve the problem that the punching edges of existing high-toughness workpieces are prone to deformation due to rebound and heat.

[0004] To solve the above technical problems, the present invention provides the following technical solution: A die-casting punching machine includes a main body, a movable seat and a fixed seat installed on the main body. The bottom of the movable seat is provided with an upper die and a cutting knife. The upper die is installed at the bottom of the movable seat through a telescopic component, and the upper die is used for fixing the casting.

[0005] The cutting knife is installed at the bottom of the movable seat through an adjusting component. The cutting knife is used for cutting the gate part of the casting, and a gap is provided between the cutting knife and the upper die.

[0006] The top of the fixed seat is fixed with a lower die, and the lower die is used for positioning the casting. A support block and a grinding device are installed on the side of the lower die. The edge of the support block is located directly below the cutting knife, and the support block is used for supporting the gate part of the casting. The grinding device is used for grinding the cutting part. A driving mechanism is also installed inside the lower die, and the driving mechanism is used for driving the support block and the grinding device to move.

[0007] When the main body operates, it forces the upper die and the cutting knife to move downward. The upper die fixes the casting in advance, and then the cutting knife cuts along the edge of the support block, forcing some gate waste to be retained at the edge of the product. After that, the driving mechanism operates to separate the support block from the bottom of the retained gate waste, and also forces the grinder to move to the edge of the gate waste, and the grinder operates to grind the gate waste.

[0008] Preferably, the telescopic assembly includes a guide rod fixed to the top of the upper die. The guide rod is movably inserted into the movable seat. A vertical spring is sleeved outside the guide rod, and both ends of the vertical spring are fixedly connected to the upper die and the movable seat respectively.

[0009] Preferably, mounting grooves and transverse chutes with the same direction are formed on the side of the lower die. The transverse chute is located at the bottom of the mounting groove and communicates with the mounting groove. One end of the support block extends into the mounting groove and is horizontally slidably connected to the mounting groove. A screw hole is formed at one end of the support block close to the inside of the mounting groove.

[0010] Preferably, the driving mechanism includes a driving motor fixed inside the mounting groove. A driving screw is fixed to the output shaft of the driving motor. A bearing seat is mounted on the driving screw, and the bearing seat is fixed to the inner wall of the mounting groove. One end of the driving screw is threadedly connected to the screw hole. The driving mechanism further includes a transverse slider which is slidably connected to the transverse chute. A transverse spring is fixedly connected between one end of the transverse slider and the end of the transverse chute. The other end of the transverse slider extends outside the transverse chute. A bracket is hinged to the end of the transverse slider outside the transverse chute. The grinder is mounted at the end of the bracket. A connecting rod is hinged to the end of the support block, and the end of the connecting rod away from the support block is hinged to the bracket. A strip-shaped groove is formed at the top of the transverse slider, and a convex block is fixedly connected to the bottom of the support block, and the convex block extends into the strip-shaped groove.

[0011] Preferably, the grinder includes a slide rail fixed to the end of the bracket. An adjusting motor is fixed to the end of the slide rail. An adjusting screw is fixed to the output shaft of the adjusting motor. The adjusting screw is located inside the slide rail and is rotatably connected to both ends of the slide rail. A longitudinal slider is slidably connected inside the slide rail. The adjusting screw passes through the longitudinal slider and is threadedly connected to the longitudinal slider. A mounting frame is fixed to the side of the longitudinal slider close to the support block. A grinding roller is rotatably connected inside the mounting frame. A driving motor is fixed to the end of the mounting frame, and the output shaft of the driving motor is fixedly connected to the end of the grinding roller.

[0012] Preferably, a transmission sliding groove is provided on the bottom wall of the movable seat. The adjusting component is used to drive the cutting knife to move. The adjusting component includes a transmission slider slidably connected in the transmission sliding groove. An adjusting bolt is further provided in the transmission sliding groove. The adjusting bolt penetrates through the transmission slider and is threadedly connected to the transmission slider. Assembly plates are provided at both ends of the adjusting bolt. The assembly plates are fixed to the side wall of the movable seat and rotatably connected to the adjusting bolt. A tool holder is fixed to the bottom of the transmission slider. The cutting knife is fixed to the tool holder on the side close to the upper die.

[0013] Preferably, a cooling component is provided on the main body. The cooling component is used to cool the grinding part of the grinder. The cooling component includes a water tank fixed to the main body. A water pump is fixed in the water tank. The output end of the water pump is fixed with an output pipe. One end of the output pipe penetrates to the outside of the water tank. The end of the output pipe outside the water tank is fixed to the tool holder. A branch pipe is fixed to the end of the output pipe. A plurality of nozzles are fixed to the branch pipe.

[0014] Preferably, a blanking port is provided on the fixed seat. The blanking port is located around the lower die. A hopper is further fixed to the bottom of the blanking port.

[0015] Preferably, a recovery pipe is connected between the bottom of the hopper and the water tank. A filter is provided at the connection between the recovery pipe and the bottom of the hopper.

[0016] The present invention also discloses a die-casting burr cutting process for a card reader housing. This die-casting burr cutting process for a card reader housing uses the above-mentioned die-casting punching machine.

[0017] Compared with the prior art, the present invention provides a die-casting punching machine and a die-casting burr cutting process for a card reader housing, having the following beneficial effects:

[0018] 1. For this die-casting punching machine and the die-casting burr cutting process for a card reader housing, by separately arranging the upper die and the cutting knife, and providing a support block, a driving mechanism and a grinder on the lower die, during the punching operation, the casting is locally cut by the cutting knife, so that part of the gate waste is retained around the product. Thus, the deformation generated during cutting occurs on this part of the gate waste. Then, this part of the gate waste is further ground by the driving mechanism and the grinder. This method can greatly reduce the deformation phenomenon generated by the product on the casting during the punching process, thereby improving the processing quality of the product.

[0019] 2. For this die-casting punching machine and the die-casting burr cutting process for a card reader housing, by providing an adjusting component, it is beneficial to adjust the position of the cutting knife, and then adjust the area of the gate waste retained on the casting according to the different materials of the casting, improving the applicability.

[0020] 3. This die-casting punching machine and the die-casting flash cutting process for the card reader housing, by setting a cooling component, a blanking port, a hopper, a filter, and a recovery pipe. When grinding the casting, the cooling component operates to spray the coolant on the grinding part, which can not only cool the casting but also reduce dust and pollution. Moreover, the hopper and the filter can collect dust for unified treatment, while the recovery pipe can recover the coolant for repeated use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic perspective structure of a die-casting punching machine of the present invention Figure 1 ;

[0022] Figure 2 Schematic perspective structure of a die-casting punching machine of the present invention Figure 2 ;

[0023] Figure 3 Cross-sectional view of a die-casting punching machine of the present invention;

[0024] Figure 4 Of the present invention Figure 3 Enlarged view of part A;

[0025] Figure 5 Schematic structural diagram of the lower die of the present invention;

[0026] Figure 6 Schematic structural diagram of the upper die of the present invention;

[0027] Figure 7 Cross-sectional view of the lower die of the present invention;

[0028] Figure 8 Of the present invention Figure 7 Enlarged view of part B;

[0029] Figure 9 Schematic working diagram of the driving mechanism of the present invention.

[0030] In the figure: 1. Main body; 2. Movable seat; 21. Transmission chute; 3. Fixed seat; 31. Material discharge opening; 32. Hopper; 33. Recovery pipe; 34. Filter; 4. Upper die; 5. Cutting knife; 6. Telescopic assembly; 61. Guide rod; 62. Vertical spring; 7. Adjusting assembly; 71. Transmission slider; 72. Adjusting bolt; 73. Assembly plate; 74. Tool rest; 8. Lower die; 81. Support block; 82. Grinder; 821. Slide rail; 822. Adjusting motor; 823. Adjusting screw; 824. Longitudinal slider; 825. Mounting frame; 826. Grinding roller; 827. Driving motor; 83. Mounting groove; 84. Transverse chute; 85. Screw hole; 86. Convex block; 9. Driving mechanism; 91. Driving motor; 92. Driving screw; 93. Bearing seat; 94. Transverse slider; 95. Transverse spring; 96. Bracket; 97. Connecting rod; 98. Strip-shaped groove; 10. Cooling assembly; 101. Water tank; 102. Water pump; 103. Output pipe; 104. Branch pipe; 105. Nozzle. Detailed implementation manner

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] As introduced in the background art, there are deficiencies in the prior art. To solve the above technical problems, this application proposes a die-casting punching machine and a die-casting burr cutting process for a card reader housing.

[0033] Embodiment 1: Please refer to Figures 1-6 , a die-casting punching machine, including a main body 1, a movable seat 2 and a fixed seat 3 installed on the main body 1. The bottom of the movable seat 2 is provided with an upper die 4 and a cutting knife 5. The upper die 4 is installed at the bottom of the movable seat 2 through a telescopic assembly 6, and the upper die 4 is used for fixing the casting.

[0034] The cutting knife 5 is installed at the bottom of the movable seat 2 through an adjusting assembly 7. The cutting knife 5 is used for cutting the gate part of the casting, and there is a gap between the cutting knife 5 and the upper die 4.

[0035] The top of the fixed seat 3 is fixed with a lower die 8. The lower die 8 is used for positioning the casting. The side of the lower die 8 is installed with a support block 81 and a grinder 82. The edge of the support block 81 is located directly below the cutting knife 5. The support block 81 is used for supporting the gate part of the casting. The grinder 82 is used for grinding the cutting part. A driving mechanism 9 is also installed inside the lower die 8. The driving mechanism 9 is used for driving the support block 81 and the grinder 82 to move.

[0036] When the main body 1 operates, it forces the upper die 4 and the cutting knife 5 to move downward. The upper die 4 fixes the casting in advance, and then the cutting knife 5 cuts along the edge of the support block 81, forcing part of the gate waste to be retained at the edge of the product. After that, the driving mechanism 9 operates to separate the support block 81 from the bottom of the retained gate waste, and also forces the grinding device 82 to move to the edge of the gate waste, and the grinding device 82 operates to grind the gate waste.

[0037] Among them, in the initial state, the height of the bottom of the upper die 4 is lower than the height of the cutting knife 5, and the width of the gap between the cutting knife 5 and the upper die 4 is the width of the gate waste retained at the edge of the product. When the casting is placed on the lower die 8, the support block 81 is just located directly below the gate waste to be retained.

[0038] During use, first place the casting on the lower die 8, and then start the main body 1. The main body 1 operates to force the movable seat 2 to move downward, driving the upper die 4 and the cutting knife 5 to move downward. Among them, the upper die 4 first contacts the casting and then presses the casting tightly. Subsequently, the cutting knife 5 moves downward to cut off the gate part on the casting, only retaining the product and part of the gate waste. During cutting, the deformation caused by the elasticity of the material itself or due to excessive heat only occurs on the gate waste. After that, the main body 1 operates again to move the movable seat 2 upward by a certain distance. At this time, the cutting knife 5 moves upward with the movable seat 2 and disengages from the casting, but the upper die 4 still presses the casting tightly. Subsequently, start the driving mechanism 9. When the driving mechanism 9 operates, it drives the support block 81 to move, so that the support block 81 disengages from the bottom of the retained gate waste, and when the driving mechanism 9 operates, it also drives the grinding device 82 to move, making the grinding device 82 move to the edge of the retained gate waste. Subsequently, start the grinding device 82, and the grinding device 82 grinds the retained gate waste, and finally only the product is retained.

[0039] By separately arranging the upper die 4 and the cutting knife 5, and arranging the support block 81, the driving mechanism 9 and the grinding device 82 on the lower die 8, during the punching work, the casting is partially cut by the cutting knife 5, so that part of the gate waste is retained around the product, and thus the deformation generated during cutting occurs on the gate waste. After that, the driving mechanism 9 and the grinding device 82 are used to further grind this part of the gate waste. This method can greatly reduce the deformation phenomenon generated by the product on the casting during the punching process, thereby improving the processing quality of the product.

[0040] Embodiment 2: Refer to Figure 6 , which is different from the above embodiment in that the telescopic assembly 6 includes a guide rod 61 fixed to the top of the upper die 4. The guide rod 61 is movably inserted into the movable seat 2, and a vertical spring 62 is sleeved outside the guide rod 61. The two ends of the vertical spring 62 are respectively fixedly connected to the upper die 4 and the movable seat 2.

[0041] Among them, both the guide rod 61 and the vertical spring 62 are provided in four. During use, the downward movement of the movable seat 2 drives the downward movement of the vertical spring 62, and then drives the downward movement of the upper die 4 and the guide rod 61. When the upper die 4 contacts the casting, it stops moving downward. At this time, when the upper die 4 continues to move downward, it only drives the cutting knife 5 to move downward and compresses the spring. The elastic force of the spring pushes the upper die 4, thereby pressing the casting tightly. After cutting, when the movable seat 2 moves upward, it first drives the cutting knife 5 to move upward and makes the spring recover its deformation. When the spring returns to its original length, the movable seat 2 will drive the spring to move upward, and the upward movement of the spring drives the upward movement of the upper die 4, thereby separating from the casting;

[0042] By setting the telescopic assembly 6, when the telescopic assembly 6 is connected to the upper die 4, the upper die 4 can float up and down, which is convenient for cutting while fixing the casting.

[0043] Embodiment 3, refer to Figures 5-9, different from the above embodiments, mounting grooves 83 and transverse chutes 84 with the same direction are formed on the side surface of the lower mold 8. The transverse chute 84 is located at the bottom of the mounting groove 83 and communicates with the mounting groove 83. One end of the support block 81 extends into the mounting groove 83 and is slidably connected to the mounting groove 83 horizontally. A screw hole 85 is formed at one end of the support block 81 close to the inside of the mounting groove 83. The driving mechanism 9 includes a driving motor 91 fixed inside the mounting groove 83. A driving screw 92 is fixed to the output shaft of the driving motor 91. A bearing seat 93 is mounted on the driving screw 92. The bearing seat 93 is fixed to the inner wall of the mounting groove 83. One end of the driving screw 92 is in threaded connection with the screw hole 85. The driving mechanism 9 further includes a transverse slider 94. The transverse slider 94 is slidably connected to the transverse chute 84. A transverse spring 95 is fixedly connected between one end of the transverse slider 94 and the end of the transverse chute 84. The other end of the transverse slider 94 extends outside the transverse chute 84. A bracket 96 is hinged to the end of the transverse slider 94 outside the transverse chute 84. The grinder 82 is mounted at the end of the bracket 96. A connecting rod 97 is hinged to the end of the support block 81. One end of the connecting rod 97 away from the support block 81 is hinged to the bracket 96. A strip-shaped groove 98 is formed at the top of the transverse slider 94. A convex block 86 is fixedly connected to the bottom of the support block 81. The convex block 86 extends into the strip-shaped groove 98. The grinder 82 includes a slide rail 821 fixed to the end of the bracket 96. An adjusting motor 822 is fixed to the end of the slide rail 821. An adjusting screw 823 is fixed to the output shaft of the adjusting motor 822. The adjusting screw 823 is located inside the slide rail 821 and is rotatably connected to both ends of the slide rail 821. A longitudinal slider 824 is slidably connected inside the slide rail 821. The adjusting screw 823 passes through the longitudinal slider 824 and is in threaded connection with the longitudinal slider 824. A mounting frame 825 is fixed to the side of the longitudinal slider 824 close to the support block 81. A grinding roller 826 is rotatably connected inside the mounting frame 825. A transmission motor 827 is fixed to the end of the mounting frame 825. The output shaft of the transmission motor 827 is fixed to the end of the grinding roller 826.

[0044] Wherein, the width of the mounting groove 83 matches the width of the gate, the width of the transverse chute 84 is smaller than the width of the mounting groove 83, the direction of the strip-shaped groove 98 is the same as the direction of the transverse chute 84, and the height of the grinder 82 is lower than the height of the lower mold 8 in the initial state;

[0045] When in use, the drive motor 91 is started, and the drive motor 91 drives the drive screw 92 to rotate. When the drive screw 92 rotates, the support block 81 is driven to move into the installation groove 83. When the support block 81 moves into the installation groove 83, it is separated from the bottom of the retained gate waste. When the support block 81 moves, it also drives the protrusion 86 and one end of the connecting rod 97 to move. The protrusion 86 moves along the strip groove 98, and the other end of the connecting rod 97 pulls the bracket 96, causing the bracket 96 to swing. When the bracket 96 swings, the grinder 82 at the end moves accordingly, and finally the grinding roller 826 on the grinder 82 matches the position of the retained gate waste. At the same time, the protrusion 86 contacts one end of the strip groove 98, and then the transmission motor on the grinder 82 is started. The drive motor 827 and the adjusting motor 822 drive the grinding roller 826 to rotate, and the adjusting motor 822 drives the adjusting screw 823 to rotate when it is running. When the adjusting screw 823 rotates, it drives the longitudinal slider 824 to move. When the longitudinal slider 824 moves, it drives the mounting frame 825, the drive motor 827 on the mounting frame 825 and the grinding roller 826 to move, thereby grinding the retained gate waste. During the grinding process, the drive motor 91 is continuously started. At this time, the drive motor 91 drives the support block 81 to move while also pushing the transverse slider 94 to move together through the protrusion 86, thereby making the bracket 96 and the grinder 82 keep moving in the current state, so as to grind step by step until the edge of the product is ground.

[0046] By setting up the driving mechanism 9, when the driving mechanism 9 is in operation, the support block 81 and the grinder 82 are first driven to move, so that the support block 81 is separated from the retained gate waste, and the grinder 82 contacts the edge of the gate waste. Then, the gate waste is ground and removed by the driving mechanism 9 and the grinder 82, and the product body 1 is retained without the need for subsequent processing.

[0047] Example 4, see Figure 6 , different from the above embodiment, the bottom wall of the movable seat 2 is provided with a transmission slide groove 21, and the adjusting component 7 is used to drive the cutter 5 to move. The adjusting component 7 includes a transmission slider 71 slidably connected to the transmission slide groove 21, and an adjusting bolt 72 is also provided in the transmission slide groove 21. The adjusting bolt 72 passes through the transmission slider 71 and is threadedly connected to the transmission slider 71. Both ends of the adjusting bolt 72 are provided with an assembly plate 73, and the assembly plate 73 is fixed to the side wall of the movable seat 2 and is rotatably connected to the adjusting bolt 72. A knife holder 74 is fixed to the bottom of the transmission slider 71, and the cutter 5 is fixed to the side of the knife holder 74 close to the upper mold 4.

[0048] When the adjusting bolt 72 is rotated, the transmission slide 71 is driven to move along the transmission chute 21. When the transmission slide 71 moves, the tool holder 74 is driven to move. When the tool holder 74 moves, the cutter 5 is driven to move. When the cutter 5 moves, the gap between the cutter 5 and the upper mold 4 changes, thereby changing the area of the gate waste retained by the cutter 5 during cutting.

[0049] By providing the adjusting assembly 7, it is beneficial to adjust the position of the cutting knife 5, and then adjust the area of the gate waste remaining on the casting according to the different materials of the casting, improving the applicability.

[0050] Example Five. Refer to Figures 2-4 , which is different from the above embodiment in that a cooling assembly 10 is provided on the main body 1. The cooling assembly 10 is used to cool the grinding part of the grinder 82. The cooling assembly 10 includes a water tank 101 fixed on the main body 1. A water pump 102 is fixed in the water tank 101. The output end of the water pump 102 is fixed with an output pipe 103. One end of the output pipe 103 penetrates to the outside of the water tank 101. The end of the output pipe 103 outside the water tank 101 is fixed on the tool rest 74. A branch pipe 104 is fixed at the end of the output pipe 103. A plurality of nozzles 105 are fixed on the branch pipe 104. A blanking port 31 is provided on the fixing seat 3. The blanking port 31 is located around the lower die 8. A hopper 32 is further fixed at the bottom of the blanking port 31. A recovery pipe 33 is connected between the bottom of the hopper 32 and the water tank 101. A filter 34 is provided at the connection between the recovery pipe 33 and the bottom of the hopper 32.

[0051] Among them, the water tank 101 is filled with coolant. When the grinder 82 is performing grinding work, the tool rest 74 is just located above the grinding part. At this time, the water pump 102 is started. The water pump 102 operates to pump the coolant into the output pipe 103, then into the branch pipe 104, and finally sprays out through the nozzles 105, just spraying on the grinding part. It can not only cool the grinding part but also reduce dust. The dust flows with the coolant, falls into the hopper 32 through the blanking port 31. Among them, the powder and debris remain in the hopper 32, and the coolant passes through the filter 34 and the recovery pipe 33, and finally flows back to the water tank 101;

[0052] By providing the cooling assembly 10, the blanking port 31, the hopper 32, the filter 34 and the recovery pipe 33, when grinding the casting, the cooling assembly 10 operates to spray the coolant on the grinding part, which can not only cool the casting but also reduce dust and pollution. And the hopper 32 and the filter 34 can be used to collect dust for unified treatment, while the recovery pipe 33 can recover the coolant for repeated use of the coolant.

[0053] Example Six. A die-casting burr cutting process for a card reader housing. This die-casting burr cutting process for a card reader housing uses a die-casting punching machine in the above embodiment.

[0054] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A die-casting punching machine, comprising a main body, a movable seat and a fixed seat installed on the main body, characterized in that: The bottom of the movable seat is provided with an upper mold and a cutting knife. The upper mold is installed at the bottom of the movable seat through a telescopic component, and the upper mold is used for fixing the casting. The cutting knife is installed at the bottom of the movable seat through an adjusting component. The cutting knife is used for cutting the gate part of the casting, and there is a gap between the cutting knife and the upper mold. The top of the fixed seat is fixed with a lower mold, which is used for positioning the casting. A support block and a grinding device are installed on the side of the lower mold. The edge of the support block is directly below the cutting knife, and the support block is used for supporting the gate part of the casting. The grinding device is used for grinding the cutting part. A driving mechanism is also installed inside the lower mold, and the driving mechanism is used for driving the support block and the grinding device to move. When the main body operates, it forces the upper mold and the cutting knife to move downward. The upper mold fixes the casting in advance, and then the cutting knife cuts along the edge of the support block, forcing some gate waste to be retained at the edge of the product. Then the driving mechanism operates, causing the support block to move away from the bottom of the retained gate waste, and also forcing the grinding device to move to the edge of the gate waste. The grinding device operates to grind the gate waste. An installation groove and a transverse chute with the same direction are formed on the side of the lower mold. The transverse chute is located at the bottom of the installation groove and is communicated with the installation groove. One end of the support block extends into the installation groove and is horizontally slidably connected to the installation groove. A threaded hole is formed at one end of the support block close to the inside of the installation groove. The driving mechanism includes a driving motor fixed inside the installation groove. A driving screw is fixed on the output shaft of the driving motor. A bearing seat is installed on the driving screw, and the bearing seat is fixed to the inner wall of the installation groove. One end of the driving screw is threadedly connected to the threaded hole. The driving mechanism also includes a transverse slider, which is slidably connected to the transverse chute. A transverse spring is fixedly connected between one end of the transverse slider and the end of the transverse chute. The other end of the transverse slider extends outside the transverse chute. A bracket is hinged to the end of the transverse slider outside the transverse chute. The grinding device is installed at the end of the bracket. A connecting rod is hinged to the end of the support block, and the end of the connecting rod away from the support block is hinged to the bracket. A strip-shaped groove is formed at the top of the transverse slider, and a convex block is fixedly connected to the bottom of the support block. The convex block extends into the strip-shaped groove. The grinding device includes a slide rail fixed at the end of the bracket. An adjusting motor is fixed at the end of the slide rail. An adjusting screw is fixed on the output shaft of the adjusting motor. The adjusting screw is located inside the slide rail and is rotatably connected to both ends of the slide rail. A longitudinal slider is slidably connected inside the slide rail. The adjusting screw passes through the longitudinal slider and is threadedly connected to the longitudinal slider. An installation frame is fixed on the side of the longitudinal slider close to the support block. A grinding roller is rotatably connected inside the installation frame. A transmission motor is fixed at the end of the installation frame, and the output shaft of the transmission motor is fixed to the end of the grinding roller.

2. A die-casting punching machine according to claim 1, characterized in that: The telescopic component includes a guide rod fixed on the top of the upper mold. The guide rod is movably inserted into the movable seat. A vertical spring is sleeved outside the guide rod, and both ends of the vertical spring are fixedly connected to the upper mold and the movable seat respectively.

3. A die-casting punching machine according to claim 1, characterized in that: The bottom wall of the movable seat is provided with a transmission chute. The adjusting component is used to drive the cutting knife to move. The adjusting component includes a transmission slider slidably connected in the transmission chute. An adjusting bolt is also provided in the transmission chute. The adjusting bolt penetrates through the transmission slider and is threadedly connected to the transmission slider. Assembly plates are provided at both ends of the adjusting bolt. The assembly plates are fixed to the side wall of the movable seat and are rotatably connected to the adjusting bolt. A tool holder is fixed to the bottom of the transmission slider. The cutting knife is fixed to the tool holder on the side close to the upper die.

4. A die-casting punching machine according to claim 1, characterized in that: A cooling component is provided on the main body. The cooling component is used to cool the grinding part of the grinder. The cooling component includes a water tank fixed to the main body. A water pump is fixed in the water tank. The output end of the water pump is fixed with an output pipe. One end of the output pipe penetrates to the outside of the water tank. The end of the output pipe outside the water tank is fixed to the tool holder. A branch pipe is fixed to the end of the output pipe. A plurality of nozzles are fixed to the branch pipe.

5. The die-casting punching machine according to claim 4, wherein: A blanking port is provided on the fixed seat. The blanking port is located around the lower die. A hopper is also fixed to the bottom of the blanking port.

6. A die-casting punching machine according to claim 5, characterized in that: A recovery pipe is connected between the bottom of the hopper and the water tank. A filter is provided at the connection between the recovery pipe and the bottom of the hopper.

7. A die-casting flash cutting process for a card reader housing, characterized in that: This die-casting burr cutting process for the card reader housing uses a die-casting punching machine according to any one of claims 1-6.

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