A die-casting device for copper accessories of a punching machine

Abstract

The present invention discloses a die-casting device for copper accessories of a punching machine, which relates to the field of die-casting molding technology and aims to solve the technical problem of low die-casting yield rate of the die-casting device for copper accessories of a punching machine. The device comprises a lower mold, a plurality of secondary die-casting mechanisms, an adjustment mechanism, a driving mechanism and an upper mold. The invention adopts the structural design of the secondary die-casting mechanism. During the initial die-casting, when a plurality of movable columns are located at the centripetal end of the centripetal groove, a plurality of movable blocks form a sealed flower-shaped structure. During the secondary die-casting, a plurality of movable columns move from the centripetal end of the centripetal groove to the eccentric end. A plurality of movable blocks form a column structure. A plurality of partial thread grooves are connected to form a threaded cavity on the surface of the column. The die-casting cavity becomes smaller. This process compensates for the shrinkage caused by the solidification of the casting, and the shrinkage of the cavity generates secondary pressure, forcing the copper liquid to better fill the thread microstructure, thereby improving the density of the casting, reducing hole defects, and improving the yield rate. This solves the technical problem of low die-casting yield rate of the die-casting device for copper accessories of a punching machine.

Description

Technical Field

[0001] The present invention relates to the technical field of die-casting, and more particularly to a die-casting device for copper accessories of a punching machine. Background Art

[0002] Die casting is a metal casting process that uses high pressure to press molten metal into the mold cavity at high speed and quickly solidify it under pressure. The electrode chuck of the punching machine is a key component for connecting the electrode. It needs to have good conductivity, certain strength and precision. For example, the threaded electrode chuck of the EDM punching machine is a hollow cylinder with an internal thread. The internal thread cooperates with the external thread at the tail of the electrode to quickly screw the electrode into and fix it in the chuck body, holding the electrode tightly. The outer wall has several protrusions at equal intervals in a ring shape to increase the heat dissipation area and facilitate the knob. It requires good density and mechanical properties.

[0003] Threaded electrode chucks are typically manufactured by die-casting to create a hollow cylinder, followed by internal threads using a machine tool. However, copper alloys have a large shrinkage rate. When the molten metal is pressed into the mold cavity at high speed and solidifies, defects such as holes are easily generated due to shrinkage, cold shut, and insufficient pouring, resulting in a low yield rate. In view of this, we propose a die-casting device for copper accessories of piercing machines. Summary of the Invention

[0004] The purpose of the present invention is to provide a die-casting device for copper accessories of a punching machine, so as to solve the technical problem of low die-casting yield of the die-casting device for copper accessories of a punching machine.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a die-casting device for copper accessories of a punching machine, comprising a lower die, a plurality of secondary die-casting mechanisms, an adjustment mechanism, a driving mechanism and an upper die;

[0006] The top of the lower mold is evenly provided with a plurality of mold cavities;

[0007] The plurality of secondary die-casting mechanisms are arranged on the lower mold relative to the plurality of mold cavities, and the secondary die-casting mechanisms include a plurality of movable blocks, a turntable, and an adjusting disk arranged in an annular equidistant structure. The plurality of movable blocks and the gap between the mold cavities constitute a die-casting cavity, and any two adjacent movable blocks are slidably connected. A movable column is fixedly provided at the bottom end of the movable block, and the eccentric end of the movable block is in an arc structure, and the eccentric end of the movable block is provided with a plurality of partial thread grooves; a circular groove is provided at the bottom of the turntable, and a plurality of centripetal grooves are provided at the top end of the turntable in an annular equidistant structure, the movable column is movably connected to the centripetal groove, and the centripetal groove is communicated with the circular groove, the adjusting disk is rotatably provided on the circular groove, and a plurality of oblique grooves are provided at the top end of the adjusting disk in an annular equidistant structure, and the bottom end of the movable column passes through the centripetal groove and is movably connected to the oblique groove;

[0008] When the plurality of movable columns are located at the centripetal end of the centripetal groove, the plurality of movable blocks form a sealed flower-shaped structure;

[0009] When the movable columns move from the centripetal end of the centripetal groove to the eccentric end, the movable blocks form a column structure, and the thread grooves of some parts are connected to form the thread cavity on the surface of the column, and the die-casting cavity becomes smaller;

[0010] The adjusting mechanism and the driving mechanism are both arranged on the lower mold.

[0011] The present invention adopts the structural design of the secondary die-casting mechanism. During the initial die-casting, when several of the movable columns are located at the centripetal end of the centripetal groove, several movable blocks form a sealed flower-shaped structure. During the secondary die-casting, several of the movable columns move from the centripetal end of the centripetal groove to the eccentric end, and several movable blocks form a column structure. Several partial thread grooves are connected to form a threaded cavity on the surface of the column, and the die-casting cavity becomes smaller. This process compensates for the shrinkage caused by the solidification of the casting, and the shrinkage of the cavity generates secondary pressure, forcing the copper liquid to better fill the thread microstructure, thereby improving the density of the casting, reducing hole defects, and improving the yield rate, thereby solving the technical problem of low die-casting yield rate of the die-casting device of the copper accessories of the punching machine.

[0012] Preferably, the lower mold is provided with an installation cavity A and an installation cavity B in an upper and lower structure respectively. The installation cavity A is connected to the plurality of mold cavities through a rotating groove, and a plug-in groove A is provided on the rotating groove.

[0013] Preferably, any two adjacent secondary die-casting mechanisms are arranged symmetrically.

[0014] Preferably, the turntable is rotatably arranged on the rotating groove, a sliding groove is provided on the outer edge surface of the turntable, an empty groove is provided at the bottom end of the sliding groove, a plug-in block A is slidably connected to the sliding groove, the plug-in block A is plugged into and matched with the plug-in groove A, the plug-in block A and the sliding groove are elastically connected by a spring, and a plug-in groove B is provided at the bottom end of the plug-in block A.

[0015] Preferably, a slide rod is fixedly provided at the bottom end of the adjusting disk, a gear is fixedly provided at the bottom end of the slide rod, the bottom end of the gear is rotatably connected to the bottom end of the mounting cavity A via a rotating rod, and any two adjacent gears are meshed and connected.

[0016] Preferably, the secondary die-casting mechanism further comprises a swivel seat, which is slidably arranged on the slide rod, and a plug-in block B is fixedly provided on the top of the swivel seat, the plug-in block B is plugged into and matched with the plug-in slot B, and an inclined guide surface is provided on the top of the plug-in block B.

[0017] Preferably, the adjustment mechanism includes a plate and a motor A, the plate is provided with a plurality of rotating grooves B, the plurality of rotating grooves B are respectively rotatably connected to the plurality of rotating seats, a threaded rod is threadedly connected to the plate, the motor A is fixed on one side of the bottom end of the installation cavity B, the bottom end of the threaded rod penetrates into the installation cavity B and is fixedly connected to the output shaft of the motor A.

[0018] Preferably, the driving mechanism includes a motor B, a worm and a worm wheel. The motor B is fixed on one side of the lower mold, and the worm is rotatably arranged in the mounting cavity B. The worm passes through the lower mold at one end close to the motor B and is fixedly connected to the motor B. The worm wheel is arranged on one side of the motor A and is rotatably connected to the mounting cavity B. The bottom end of one of the rotating rods passes through the mounting cavity B and is fixedly connected to the worm wheel.

[0019] Preferably, a material cavity is provided at the bottom end of the upper mold, an input groove connected to the material cavity is provided on one side of the upper mold, a die-casting plate is slidably connected to the material cavity, a gate groove is provided at the bottom end of the die-casting plate relative to any two of the mold cavity gaps, a plurality of connecting rods are fixedly provided at the top end of the die-casting plate, the connecting rods are slidably connected to the upper mold, the top ends of the plurality of connecting rods pass through the upper mold and are fixedly connected through a circular plate, and a connecting column is fixedly provided at the top end of the circular plate.

[0020] Preferably, the material cavity includes a plurality of material troughs, the material troughs are connected to the mold cavity, and the material troughs are smaller than the mold cavity. Two adjacent material troughs are connected through a through groove, and a protective column is fixed in the material trough.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention adopts the structural design of the secondary die-casting mechanism. During the initial die-casting, when several movable columns are located at the centripetal end of the centripetal groove, several movable blocks form a sealed flower-shaped structure. During the secondary die-casting, several movable columns move from the centripetal end of the centripetal groove to the eccentric end, and several movable blocks form a column structure. Several partial thread grooves are connected to form a threaded cavity on the surface of the column, and the die-casting cavity becomes smaller. This process compensates for the shrinkage caused by the solidification of the casting, and the shrinkage of the cavity generates secondary pressure, forcing the copper liquid to better fill the thread microstructure, thereby improving the density of the casting, reducing hole defects, and improving the yield rate, thereby solving the technical problem of low die-casting yield rate of the die-casting device of copper accessories of the punching machine.

[0023] 2. The present invention also further designs the secondary die-casting mechanism so that when the plug-in block B is disengaged from the plug-in slot B, the plug-in block A is plugged into the plug-in slot A under the elastic force of the spring, so that the turntable cannot rotate, which is used to adjust the shape changes of several movable blocks. When the plug-in block B is inserted into the plug-in slot B, the inclined guide surface of the plug-in block B drives the plug-in block A to slide along the slide groove, so that the plug-in block A is disengaged from the plug-in slot A. At this time, the rotation of the adjustment disk drives the turntable to rotate, so that the several movable blocks rotate around the cylindrical structure, which is used for demolding the casting.

[0024] 3. The present invention also designs the upper mold structure so that the protective column can slide in contact with the top of several movable blocks when the mold is closed, thereby preventing the die casting liquid from entering the mold. Figure 5 In the middle gap surrounded by the several movable blocks shown, after the die-casting liquid enters the material cavity, the movable end of the connecting column is driven by the external hydraulic mechanism, so that the die-casting plate can deliver the die-casting liquid into several die-casting cavities, reducing the situation of insufficient pouring, thereby further improving the yield rate. Moreover, after the die-casting is completed, the gates of the casting are located on the same plane, which is convenient for cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a partial structural cross-sectional schematic diagram of the present invention;

[0027] Figure 3 Schematic diagram of the cross-sectional structure of the lower mold of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the secondary die-casting mechanism, the adjustment mechanism and the driving mechanism of the present invention;

[0029] Figure 5 Schematic diagram of the split structure of the secondary die-casting mechanism of the present invention;

[0030] Figure 6 It is a partial structural cross-sectional schematic diagram of the secondary die-casting mechanism of the present invention;

[0031] Figure 7 It is a structural schematic diagram of the movable block of the present invention;

[0032] Figure 8 It is a partial structural diagram of the secondary die-casting mechanism, the adjustment mechanism and the driving mechanism of the present invention;

[0033] Figure 9 A schematic diagram of the motion states of several gears according to the present invention;

[0034] Figure 10 Schematic diagram of the split structure of the upper mold of the present invention;

[0035] Figure 11 It is a schematic cross-sectional view of the overall structure of the present invention.

[0036] Description of the numbers in the figure:

[0037] 1. Lower mold; 11. Mold cavity; 12. Installation cavity A; 13. Installation cavity B; 14. Rotation slot; 15. Insertion slot A;

[0038] 2. Secondary die-casting mechanism; 21. Movable block; 211. Movable column; 212. Partial threaded groove; 22. Turntable; 221. Circular groove; 222. Centripetal groove; 223. Slide groove; 224. Empty groove; 225. Plug-in block A; 226. Spring; 227. Plug-in groove B; 23. Adjusting plate; 231. Oblique groove; 232. Slide rod; 233. Gear; 234. Rotating rod; 24. Rotating seat; 241. Plug-in block B;

[0039] 3. Adjustment mechanism; 31. Plate; 32. Rotating groove B; 33. Threaded rod; 34. Motor A;

[0040] 4. Driving mechanism; 41. Motor B; 42. Worm; 43. Worm gear;

[0041] 5. Upper mold; 50. Input trough; 51. Die-casting plate; 52. Gate trough; 53. Connecting rod; 54. Round plate; 55. Connecting column; 56. Material trough; 57. Through slot; 58. Protective column. DETAILED DESCRIPTION

[0042] like Figures 1 to 11 As shown, the present invention relates to a die-casting device for copper accessories of a punching machine, comprising a lower die 1, a plurality of secondary die-casting mechanisms 2, an adjustment mechanism 3, a driving mechanism 4 and an upper die 5;

[0043] Several mold cavities 11 are evenly opened at the top of the lower mold 1. The lower mold 1 has an upper and lower structure with an installation cavity A12 and an installation cavity B13 respectively. The installation cavity A12 and the several mold cavities 11 are connected through a rotating groove 14. The rotating groove 14 is provided with an insertion groove A15.

[0044] A plurality of secondary die-casting mechanisms 2 are arranged on the lower mold 1 relative to the plurality of die cavities 11. Any two adjacent secondary die-casting mechanisms 2 are arranged symmetrically. The secondary die-casting mechanism 2 includes a plurality of movable blocks 21, a turntable 22, an adjustment disk 23 and a turntable 24 arranged in a circular and equidistant structure.

[0045] The gaps between the movable blocks 21 and the die cavity 11 form a die casting cavity. Any two adjacent movable blocks 21 are connected in a sliding manner. A movable column 211 is fixed at the bottom of the movable block 21.

[0046] The eccentric end of the movable block 21 is an arc surface structure, and the eccentric end of the movable block 21 is provided with a plurality of partial thread grooves 212;

[0047] The turntable 22 is rotatably arranged on the rotating groove 14. A circular groove 221 is provided at the bottom of the turntable 22. A plurality of centripetal grooves 222 are provided at the top of the turntable 22 in an annular structure with equal spacing. The movable column 211 is movably connected to the centripetal groove 222. The centripetal groove 222 is connected to the circular groove 221. A sliding groove 223 is provided on the outer edge surface of the turntable 22. An empty groove 224 is provided at the bottom of the sliding groove 223. A plug-in block A225 is slidably connected to the sliding groove 223. The plug-in block A225 is plugged into the plug-in groove A15. The plug-in block A225 and the slide groove 223 are elastically connected by a spring 226. The plug-in groove B227 is provided at the bottom of the plug-in block A225.

[0048] The adjusting disk 23 is rotatably mounted on the circular groove 221. The top of the adjusting disk 23 is an annular structure with a plurality of equally spaced oblique grooves 231. The bottom end of the movable column 211 passes through the centripetal groove 222 and is movably connected to the oblique groove 231. A slide rod 232 is fixed to the bottom end of the adjusting disk 23. A gear 233 is fixed to the bottom end of the slide rod 232. The bottom end of the gear 233 is rotatably connected to the bottom end of the mounting cavity A12 via a rotating rod 234. Any two adjacent gears 233 are meshed and connected.

[0049] The swivel seat 24 is slidably arranged on the slide bar 232. A plug-in block B241 is fixedly provided on the top of the swivel seat 24. The plug-in block B241 is plugged into the plug-in slot B227, and an inclined guide surface is provided on the top of the plug-in block B241. Through the above arrangement, the present invention enables a plurality of gears 233 to rotate simultaneously, and two adjacent gears 233 rotate in opposite directions, and drives the adjustment disk 23 to rotate through the slide bar 232. When the plug-in block B241 is disengaged from the plug-in slot B227, the plug-in block A225 is plugged into the plug-in slot A15 under the elastic force of the spring 226, so that the swivel disk 22 cannot rotate. At this time, the gap position between the oblique slot 231 and the centripetal slot 222 changes, so that the position of the plurality of movable columns 211 changes. When the plurality of movable columns 211 are located at the centripetal end of the centripetal slot 222, as shown in FIG. Figure 7 As shown, a plurality of movable blocks 21 form a sealed flower-shaped structure. At this time, the die-casting cavity is used for the initial die-casting of the electrode chuck of the punching machine. When the plurality of movable columns 211 move from the centripetal end of the centripetal groove 222 to the eccentric end, the plurality of movable blocks 21 form a column structure. The plurality of partial thread grooves 212 are connected to form the threaded cavity on the surface of the column. The die-casting cavity becomes smaller, and the secondary die-casting is realized. This process compensates for the shrinkage caused by the solidification of the casting, and the cavity shrinkage produces a secondary die-casting. The secondary pressure forces the copper liquid to better fill the thread microstructure, improve the density of the casting, reduce hole defects, and improve the yield rate; when the plug-in block B241 is inserted into the plug-in slot B227, the inclined guide surface of the plug-in block B241 drives the plug-in block A225 to slide along the slide groove 223, so that the plug-in block A225 is disengaged from the plug-in slot A15. At this time, the rotation of the adjustment disk 23 drives the turntable 22 to rotate, so that several movable blocks 21 rotate to form a cylindrical structure for demolding of the casting.

[0050] The adjustment mechanism 3 includes a plate 31 and a motor A34. Plate 31 is provided with a plurality of rotation slots B32, which are rotatably connected to the plurality of swivel seats 24. A threaded rod 33 is threadedly connected to plate 31. Motor A34 is fixedly mounted to one side of the bottom end of mounting cavity B13. The bottom end of threaded rod 33 penetrates mounting cavity B13 and is fixedly connected to the output shaft of motor A34. This arrangement allows the present invention to control the rotation of motor A34 through an external control mechanism. The rotation of threaded rod 33 drives plate 31 upward and downward, thereby simultaneously raising and lowering the plurality of swivel seats 24 and controlling the simultaneous engagement and disengagement of a plurality of plug-in blocks B241 with the insertion slots B227.

[0051] The driving mechanism 4 includes a motor B41, a worm 42 and a worm wheel 43. The motor B41 is fixed on one side of the lower mold 1, and the worm 42 is rotatably arranged in the mounting cavity B13. The worm 42 passes through the lower mold 1 near one end of the motor B41 and is fixedly connected to the motor B41. The worm wheel 43 is arranged on one side of the motor A34 and is rotatably connected to the mounting cavity B13. The bottom end of one of the rotating rods 234 passes through the mounting cavity B13 and is fixedly connected to the worm wheel 43. Through the above-mentioned arrangement, the present invention controls the rotation of the output shaft of the motor B41 through an external control mechanism, and the worm 42 drives the worm wheel 43 to rotate, thereby causing the rotating rod 234 and its corresponding gear 233 to rotate. The deceleration effect of this structure reduces the high power requirement of the motor B41 during secondary die-casting.

[0052] A material cavity is formed at the bottom of the upper mold 5. An input groove 50 communicating with the material cavity is formed on one side of the upper mold 5. A die-casting plate 51 is slidably connected to the material cavity. A gate groove 52 is formed at the bottom of the die-casting plate 51 relative to the gap between any two mold cavities 11. A plurality of connecting rods 53 are fixed to the top of the die-casting plate 51. The connecting rods 53 are slidably connected to the upper mold 5. The top ends of the plurality of connecting rods 53 pass through the upper mold 5 and are fixedly connected through a circular plate 54. A connecting column 55 is fixed to the top of the circular plate 54.

[0053] The material cavity includes a plurality of troughs 56, which are connected to the mold cavity 11 and are smaller than the mold cavity 11. Two adjacent troughs 56 are connected by a through slot 57. A protective column 58 is fixed in the trough 56. The present invention adopts the above arrangement, and the protective column 58 is in sliding contact with the top of the plurality of movable blocks 21 when the mold is closed, so as to prevent the die casting liquid from entering the mold. Figure 5 In the middle gap surrounded by the several movable blocks 21 shown, after the die-casting liquid enters the material cavity, the movable end of the connecting column 55 is driven by the external hydraulic mechanism, so that the die-casting plate 51 can deliver the die-casting liquid into several die-casting cavities, reducing the situation of insufficient pouring, thereby improving the yield rate. Moreover, after the die-casting is completed, the gates of the casting are located on the same plane, which is convenient for cutting.

[0054] Working Principle: This embodiment provides a die-casting device for copper accessories of a punching machine. In the initial state, the movable block 21 is fixed to the insertion slot A15 via the plug-in block A225 under the action of the spring 226, the rotary disk 22 is locked, and the adjustment disk 23 is stationary. At this time, the movable column 211 is located at the centripetal end of the centripetal slot 222, and the movable block 21 forms a sealed flower-shaped structure, forming the initial die-casting cavity.

[0055] The mold is closed, and the molten metal is injected into the material cavity through the input groove 50. The die casting plate 51 is pressed down to inject the metal into the mold cavity 11, completing the initial die casting;

[0056] Motor B41 drives gear 233 to rotate via worm 42 and worm wheel 43. Adjacent gears 233 rotate in opposite directions, driving the adjustment disk 23 to rotate. The inclined groove 231 pushes the movable column 211 toward the eccentric end of the centripetal groove 222. The movable block 21 contracts radially, and some thread grooves 212 are spliced together to form a thread cavity. The die-casting cavity is reduced, achieving secondary precision die-casting. This process compensates for the shrinkage caused by the solidification of the casting. The shrinkage of the cavity generates secondary pressure, forcing the molten copper to better fill the thread microstructure, improving the density of the casting, reducing hole defects, and improving the yield rate.

[0057] The motor A34 drives the threaded rod 33 to rotate, driving the plate 31 to rise, so that the plug-in block B241 is inserted into the plug-in slot B227, pushing the plug-in block A225 out of the plug-in slot A15, and releasing the lock of the turntable 22;

[0058] The lower mold 1 is separated from the upper mold 5, and the regulating disk 23 rotates to drive the turntable 22 to rotate, so that the movable blocks 21 rotate synchronously, the column surrounded by the movable blocks 21 rotates, and the threaded cavity rotates, so that the casting moves upward to be demolded.

[0059] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A die-casting device for copper accessories of a punching machine, characterized in that: It includes a lower die, several secondary die-casting mechanisms, an adjustment mechanism, a driving mechanism and an upper die; The top of the lower mold is evenly provided with a plurality of mold cavities; The plurality of secondary die-casting mechanisms are arranged on the lower mold relative to the plurality of mold cavities, and the secondary die-casting mechanisms include a plurality of movable blocks, a turntable, and an adjusting disk arranged in an annular equidistant structure. The plurality of movable blocks and the gap between the mold cavities constitute a die-casting cavity, and any two adjacent movable blocks are slidably connected. A movable column is fixedly provided at the bottom end of the movable block, and the eccentric end of the movable block is in an arc structure, and the eccentric end of the movable block is provided with a plurality of partial thread grooves; a circular groove is provided at the bottom of the turntable, and a plurality of centripetal grooves are provided at the top end of the turntable in an annular equidistant structure, the movable column is movably connected to the centripetal groove, and the centripetal groove is communicated with the circular groove, the adjusting disk is rotatably provided on the circular groove, and a plurality of oblique grooves are provided at the top end of the adjusting disk in an annular equidistant structure, and the bottom end of the movable column passes through the centripetal groove and is movably connected to the oblique groove; When the plurality of movable columns are located at the centripetal end of the centripetal groove, the plurality of movable blocks form a sealed flower-shaped structure; When the movable columns move from the centripetal end of the centripetal groove to the eccentric end, the movable blocks form a column structure, and the thread grooves of some parts are connected to form the thread cavity on the surface of the column, and the die-casting cavity becomes smaller; The adjusting mechanism and the driving mechanism are both arranged on the lower mold.

2. The die-casting device for copper accessories of a punching machine according to claim 1, characterized in that: The lower mold has an upper and lower structure and is respectively provided with an installation cavity A and an installation cavity B. The installation cavity A is connected to the plurality of mold cavities through a rotating groove, and a plug-in groove A is provided on the rotating groove.

3. The die-casting device for copper accessories of a punching machine according to claim 2, characterized in that: Any two adjacent secondary die-casting mechanisms are arranged symmetrically.

4. The die-casting device for copper accessories of a punching machine according to claim 3, characterized in that: The turntable is rotatably arranged on the rotating groove, a sliding groove is provided on the outer edge surface of the turntable, an empty groove is provided at the bottom of the sliding groove, a plug-in block A is slidably connected to the sliding groove, the plug-in block A is plugged into and matched with the plug-in groove A, the plug-in block A and the sliding groove are elastically connected by a spring, and a plug-in groove B is provided at the bottom of the plug-in block A.

5. The die-casting device for copper accessories of a punching machine according to claim 4, characterized in that: A slide rod is fixedly provided at the bottom end of the adjusting disk, and a gear is fixedly provided at the bottom end of the slide rod. The bottom end of the gear is rotatably connected to the bottom end of the mounting cavity A through a rotating rod, and any two adjacent gears are meshed and connected.

6. The die-casting device for copper parts of a punching machine according to claim 5, characterized in that: The secondary die-casting mechanism also includes a swivel seat, which is slidably arranged on the slide rod. A plug-in block B is fixed to the top of the swivel seat. The plug-in block B is plugged into the plug-in slot B, and an inclined guide surface is provided on the top of the plug-in block B.

7. The die-casting device for copper parts of a punching machine according to claim 6, characterized in that: The adjustment mechanism includes a plate and a motor A. The plate is provided with a plurality of rotating grooves B, and the plurality of rotating grooves B are respectively rotatably connected to the plurality of rotating seats. A threaded rod is threadedly connected to the plate. The motor A is fixed to one side of the bottom end of the installation cavity B. The bottom end of the threaded rod penetrates into the installation cavity B and is fixedly connected to the output shaft of the motor A.

8. The die-casting device for copper parts of a punching machine according to claim 7, characterized in that: The driving mechanism includes a motor B, a worm and a worm wheel. The motor B is fixed on one side of the lower mold. The worm is rotatably arranged in the mounting cavity B. The end of the worm close to the motor B passes through the lower mold and is fixedly connected to the motor B. The worm wheel is arranged on one side of the motor A and is rotatably connected to the mounting cavity B. The bottom end of one of the rotating rods passes through the mounting cavity B and is fixedly connected to the worm wheel.

9. The die-casting device for copper parts of a punching machine according to claim 8, characterized in that: A material cavity is provided at the bottom of the upper mold, an input groove connected to the material cavity is provided on one side of the upper mold, a die-casting plate is slidably connected to the material cavity, a gate groove is provided at the bottom of the die-casting plate relative to the gap position between any two of the mold cavities, a plurality of connecting rods are fixed on the top of the die-casting plate, the connecting rods are slidably connected to the upper mold, the top ends of the plurality of connecting rods pass through the upper mold and are fixedly connected through a circular plate, and a connecting column is fixed on the top of the circular plate.

10. The die-casting device for copper parts of a punching machine according to claim 9, characterized in that: The material cavity includes a plurality of material troughs, which are connected to the mold cavity and are smaller than the mold cavity. Two adjacent material troughs are connected through a through groove, and protective columns are fixed in the material troughs.

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