Puncher copper accessory die-casting device

Abstract

The invention discloses a puncher copper accessory die-casting device, relates to the technical field of die-casting forming, and aims to solve the technical problem that the puncher copper accessory die-casting device is low in die-casting yield, and the puncher copper accessory die-casting device comprises a lower die, a plurality of secondary die-casting mechanisms, an adjusting mechanism, a driving mechanism and an upper die. Through the structural design of the secondary die-casting mechanism, during primary die-casting, when a plurality of movable columns are located at the centripetal end of a centripetal groove, a plurality of movable blocks define a sealed flower-shaped structure, and during secondary die-casting, a plurality of movable columns move to the eccentric end from the centripetal end of the centripetal groove, and a plurality of movable blocks define a column structure; a plurality of parts of threaded grooves are communicated to form a threaded cavity on the surface of the cylinder, the die-casting cavity becomes smaller, shrinkage generated by solidification of a casting is compensated in the process, secondary pressure is generated by cavity shrinkage, molten copper is forced to better fill a threaded fine structure, the compactness of the casting is improved, hole defects are reduced, and the yield is improved. The technical problem that a puncher copper accessory die-casting device is low in die-casting yield is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of die-casting molding, and more specifically, to a die-casting device for copper fittings of a perforating machine. Background Art

[0002] Die-casting is a metal casting process that uses high pressure to inject molten metal into a mold cavity at high speed and solidifies quickly under pressure. The electrode chuck of a perforating machine is a key component for connecting the electrode and needs to have good electrical conductivity, certain strength and precision. For example, the threaded electrode chuck of an electric discharge perforating machine is a hollow cylinder with internal threads. Through the cooperation of the internal threads and the external threads at the tail of the electrode, the electrode can be quickly screwed into and fixed in the chuck body to hold the electrode tightly. There are several protrusions arranged at equal intervals in a ring shape on the outer wall to increase the heat dissipation area and facilitate the knob. It requires better density and mechanical properties.

[0003] The threaded electrode chuck usually adopts the die-casting molding method to first manufacture a hollow cylinder, and then uses a machine tool to manufacture the internal threads. However, copper alloys have a large shrinkage rate. When the molten metal is injected into the mold cavity at high speed and solidifies, due to reasons such as copper alloy shrinkage, cold shut, and insufficient pouring, defects such as holes are likely to occur, and the yield rate is low. In view of this, we propose a die-casting device for copper fittings of a perforating machine. Summary of the Invention

[0004] The purpose of the present invention is to provide a die-casting device for copper fittings of a perforating machine to solve the technical problem of low die-casting yield rate of the die-casting device for copper fittings of a perforating machine.

[0005] To solve the above technical problems, the present invention provides the following technical solution: A die-casting device for copper fittings of a perforating machine, including a lower mold, a plurality of secondary die-casting mechanisms, an adjustment mechanism, a driving mechanism, and an upper mold; A plurality of mold cavities are evenly opened at the top end of the lower mold; The plurality of secondary die-casting mechanisms are arranged on the lower mold relative to the plurality of mold cavities. The secondary die-casting mechanism includes a plurality of movable blocks, a turntable, and an adjustment disk arranged in an annular and equally spaced structure. A die-casting cavity is formed by the gap between the plurality of movable blocks and the mold cavity. Any two adjacent movable blocks are slidably connected. An activity column is fixedly arranged at the bottom end of the movable block. The eccentric end of the movable block has an arc surface structure, and a plurality of partial thread grooves are opened at the eccentric end of the movable block; A circular groove is opened at the bottom end of the turntable, and a plurality of centripetal grooves are opened at the top end of the turntable in an annular and equally spaced structure. The activity column is movably connected with the centripetal groove, and the centripetal groove is communicated with the circular groove. The adjustment disk is rotatably arranged on the circular groove, and a plurality of inclined grooves are opened at the top end of the adjustment disk in an annular and equally spaced structure. The bottom end of the activity column passes through the centripetal groove and is movably connected with the inclined groove; When the plurality of activity columns are located at the centripetal end of the centripetal groove, the plurality of movable blocks enclose a sealed flower-shaped structure; When several of the movable columns move from the centripetal end to the eccentric end of the centripetal groove, several movable blocks enclose a cylindrical structure, several partial thread grooves communicate to form a thread cavity on the surface of the cylinder, and the die-casting cavity becomes smaller. Both the adjusting mechanism and the driving mechanism are arranged on the lower die.

[0006] Through the structural design of the secondary die-casting mechanism of the present invention, during the first die-casting, when several of the movable columns are located at the centripetal end of the centripetal groove, several movable blocks enclose a sealed flower-shaped structure. During the second die-casting, several of the movable columns move from the centripetal end to the eccentric end of the centripetal groove, several movable blocks enclose a cylindrical structure, several partial thread grooves communicate to form a thread cavity on the surface of the cylinder, and the die-casting cavity becomes smaller. This process compensates for the shrinkage generated during the solidification of the casting, and the shrinkage of the cavity generates a secondary pressure, forcing the copper liquid to better fill the fine thread structure, improving the density of the casting, reducing hole defects, and improving the yield rate, thus solving the technical problem of low yield rate of the die-casting device for copper fittings of the perforating machine.

[0007] Preferably, an installation cavity A and an installation cavity B are respectively formed in the lower die in an up-and-down structure. The installation cavity A is communicated with several of the die cavities through a rotating groove, and a plugging groove A is formed on the rotating groove.

[0008] Preferably, any two adjacent secondary die-casting mechanisms are symmetrically arranged.

[0009] Preferably, the turntable is rotatably arranged on the rotating groove. A sliding groove is formed on the outer edge surface of the turntable. An empty groove is formed at the bottom end of the sliding groove. A plugging block A is slidably connected to the sliding groove. The plugging block A is in plugging fit with the plugging groove A. The plugging block A and the sliding groove are elastically connected by a spring. A plugging groove B is formed at the bottom end of the plugging block A.

[0010] Preferably, a sliding rod is fixedly arranged at the bottom end of the adjusting disc. A gear is fixedly arranged at the bottom end of the sliding rod. The bottom end of the gear is rotatably connected to the bottom end of the installation cavity A through a rotating rod. Any two adjacent gears are meshed and connected.

[0011] Preferably, the secondary die-casting mechanism further includes a rotating seat. The rotating seat is slidably arranged on the sliding rod. A plugging block B is fixedly arranged at the top end of the rotating seat. The plugging block B is in plugging fit with the plugging groove B, and an inclined guide surface is formed at the top end of the plugging block B.

[0012] Preferably, the adjusting mechanism includes a plate and a motor A. Several rotating grooves B are formed on the plate. Several of the rotating grooves B are respectively rotatably connected to several of the rotating seats. A threaded rod is threadedly connected to the plate. The motor A is fixedly arranged 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.

[0013] Preferably, the driving mechanism includes a motor B, a worm and a worm gear. The motor B is fixedly arranged on one side of the lower die. The worm is rotatably arranged in the mounting cavity B. One end of the worm close to the motor B penetrates through the lower die and is fixedly connected to the motor B. The worm gear 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 penetrates into the mounting cavity B and is fixedly connected to the worm gear.

[0014] Preferably, a material cavity is formed at the bottom end of the upper die. An input groove communicating with the material cavity is formed on one side of the upper die. A die-casting plate is slidably connected to the material cavity. Gate grooves are formed at the bottom end of the die-casting plate at the gap positions of any two of the die cavities. A plurality of connecting rods are fixedly arranged at the top end of the die-casting plate. The connecting rods are slidably connected to the upper die. The top ends of the plurality of connecting rods all penetrate through the upper die and are fixedly connected through a circular plate. A connecting column is fixedly arranged at the top end of the circular plate.

[0015] Preferably, the material cavity includes a plurality of material grooves. The material grooves communicate with the die cavities, and the material grooves are smaller than the die cavities. Adjacent two of the material grooves communicate through a through groove. A protective column is fixedly arranged in the material groove.

[0016] The beneficial effects of the present invention are as follows: 1. Through the structural design of the secondary die-casting mechanism of the present invention, during the primary die-casting, when a plurality of movable columns are located at the centripetal ends of the centripetal grooves, a plurality of movable blocks enclose a sealed flower-shaped structure. During the secondary die-casting, a plurality of movable columns move from the centripetal ends of the centripetal grooves to the eccentric ends, and a plurality of movable blocks enclose a cylindrical structure. A plurality of partial thread grooves communicate to form a thread cavity on the surface of the cylinder, and the die-casting cavity becomes smaller. In this process, the shrinkage generated by the solidification of the casting is compensated, and the shrinkage of the cavity generates a secondary pressure, forcing the copper liquid to better fill the fine thread structure, improving the compactness of the casting, reducing the hole defects, and improving the yield rate, thus solving the technical problem of low yield rate of the die-casting device for copper fittings of the perforating machine.

[0017] 2. Through the further design of the secondary die-casting mechanism of the present invention, when the plug block B is disengaged from the plug slot B, the plug block A is inserted into the plug slot A under the elastic force of the spring, so that the turntable cannot rotate, which is used to adjust the morphological change of a plurality of movable blocks. When the plug block B is inserted into the plug slot B, the inclined guide surface of the plug block B drives the plug block A to slide along the chute, so that the plug block A is disengaged from the plug slot A. At this time, the adjusting disk rotates to drive the turntable to rotate, so that a plurality of movable blocks enclose a rotating cylindrical structure, which is used for the demoulding of the casting.

[0018] 3. Through the design of the upper die structure of the present invention, the protective column is in sliding contact with the top ends of a plurality of movable blocks during the mold closing, preventing the die-casting liquid from entering Figure 5In the middle gap surrounded by several movable blocks shown, after the die-casting liquid enters the material cavity, the movable end of the connecting column is driven by an external hydraulic mechanism, so that the die-casting plate can send the die-casting liquid into several die-casting cavities, reducing the situation of insufficient pouring, thereby further improving the qualified rate. Moreover, after the die-casting part is completed, the gate of the casting is on the same plane, which is convenient for cutting. Brief Description of the Drawings

[0019] Figure 1 Schematic diagram of the overall structure of the present invention; Figure 2 Schematic sectional view of a part of the structure of the present invention; Figure 3 Schematic sectional view of the structure of the lower die of the present invention; Figure 4 Schematic diagram of the structure of the secondary die-casting mechanism, adjustment mechanism and driving mechanism of the present invention; Figure 5 Exploded structure schematic diagram of the secondary die-casting mechanism of the present invention; Figure 6 Partial sectional view of the structure of the secondary die-casting mechanism of the present invention; Figure 7 Schematic diagram of the structure of the movable block of the present invention; Figure 8 Partial structure schematic diagram of the secondary die-casting mechanism, adjustment mechanism and driving mechanism of the present invention; Figure 9 Schematic diagram of the motion state of several gears of the present invention; Figure 10 Exploded structure schematic diagram of the upper die of the present invention; Figure 11 Overall sectional view of the structure of the present invention.

[0020] Explanation of the reference numerals in the drawings: 1. Lower die; 11. Mold cavity; 12. Installation cavity A; 13. Installation cavity B; 14. Rotation groove; 15. Insertion groove A; 2. Secondary die-casting mechanism; 21. Movable block; 211. Movable column; 212. Partial thread groove; 22. Turntable; 221. Circular groove; 222. Centripetal groove; 223. Slide groove; 224. Empty groove; 225. Insertion block A; 226. Spring; 227. Insertion groove B; 23. Adjusting disk; 231. Inclined groove; 232. Slide bar; 233. Gear; 234. Rotating rod; 24. Rotating seat; 241. Insertion block B; 3. Adjustment mechanism; 31. Plate; 32. Rotation groove B; 33. Threaded rod; 34. Motor A; 4. Driving mechanism; 41. Motor B; 42. Worm; 43. Worm gear; 5. Upper die; 50. Input groove; 51. Die-casting plate; 52. Gate groove; 53. Connecting rod; 54. Circular plate; 55. Connecting column; 56. Material groove; 57. Through groove; 58. Protective column. Detailed implementation manner

[0021] As Figures 1 to 11 shown, a die-casting device for copper fittings of a perforating machine according to the present invention includes a lower die 1, a plurality of secondary die-casting mechanisms 2, an adjusting mechanism 3, a driving mechanism 4 and an upper die 5; A plurality of die cavities 11 are evenly opened at the top end of the lower die 1. An installation cavity A12 and an installation cavity B13 are respectively opened in the lower die 1 in an up-and-down structure. The installation cavity A12 and the plurality of die cavities 11 are all communicated through a rotating groove 14, and a plugging groove A15 is opened on the rotating groove 14.

[0022] A plurality of secondary die-casting mechanisms 2 are arranged on the lower die 1 relative to the plurality of die cavities 11. Any two adjacent secondary die-casting mechanisms 2 are symmetrically arranged. The secondary die-casting mechanism 2 includes a plurality of movable blocks 21, a turntable 22, an adjusting disk 23 and a rotating seat 24 arranged in an annular and equally spaced structure. A die-casting cavity is formed by the gap between a plurality of movable blocks 21 and the die cavity 11. Any two adjacent movable blocks 21 are slidably connected. A movable column 211 is fixedly provided at the bottom end of the movable block 21. Among them, the eccentric end of the movable block 21 has an arc surface structure, and a plurality of partial thread grooves 212 are opened on the eccentric end of the movable block 21. The turntable 22 is rotatably arranged on the rotating groove 14. A circular groove 221 is opened at the bottom end of the turntable 22. A plurality of centripetal grooves 222 are opened at the top end of the turntable 22 in an annular and equally spaced structure. The movable column 211 is movably connected with the centripetal groove 222. The centripetal groove 222 is communicated with the circular groove 221. A sliding groove 223 is opened on the outer edge surface of the turntable 22. An empty groove 224 is opened at the bottom end of the sliding groove 223. A plugging block A225 is slidably connected on the sliding groove 223. The plugging block A225 is in plugging cooperation with the plugging groove A15. The plugging block A225 and the sliding groove 223 are elastically connected by a spring 226. A plugging groove B227 is opened at the bottom end of the plugging block A225. The adjusting disk 23 is rotatably arranged on the circular groove 221. A plurality of inclined grooves 231 are opened at the top end of the adjusting disk 23 in an annular and equally spaced structure. The bottom end of the movable column 211 passes through the centripetal groove 222 and is movably connected with the inclined groove 231. A sliding rod 232 is fixedly provided at the bottom end of the adjusting disk 23. A gear 233 is fixedly provided at the bottom end of the sliding rod 232. The bottom end of the gear 233 is rotatably connected with the bottom end of the installation cavity A12 through a rotating rod 234. Any two adjacent gears 233 are meshed and connected. The swivel base 24 is slidably arranged on the sliding rod 232. A plug block B241 is fixedly arranged at the top end of the swivel base 24. The plug block B241 is in plug-in fit with the plug slot B227, and an inclined guide surface is formed at the top end of the plug block B241. With the above arrangement of the present invention, a plurality of gears 233 rotate simultaneously, and the rotation directions of two adjacent gears 233 are opposite. The adjustment disk 23 is driven to rotate by the sliding rod 232. When the plug block B241 is disengaged from the plug slot B227, the plug block A225 is plugged into the plug slot A15 under the elastic force of the spring 226, so that the turntable 22 cannot rotate. At this time, the gap position between the inclined slot 231 and the centripetal slot 222 changes, causing the positions of a plurality of movable columns 211 to change. When a plurality of movable columns 211 are located at the centripetal end of the centripetal slot 222, as Figure 7 shown, a plurality of movable blocks 21 enclose 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 perforating machine. When a plurality of movable columns 211 move from the centripetal end to the eccentric end of the centripetal slot 222, a plurality of movable blocks 21 enclose a cylindrical structure, and a plurality of partial thread grooves 212 communicate to form a thread cavity on the surface of the cylinder. The die-casting cavity becomes smaller to achieve secondary die-casting. This process compensates for the shrinkage generated during the solidification of the casting, and the shrinkage of the cavity generates secondary pressure, forcing the copper liquid to better fill the fine thread structure, improving the density of the casting, reducing hole defects, and improving the yield rate. When the plug block B241 is inserted into the plug slot B227, the inclined guide surface of the plug block B241 drives the plug block A225 to slide along the sliding groove 223, so that the plug block A225 is disengaged from the plug slot A15. At this time, the adjustment disk 23 rotates to drive the turntable 22 to rotate, causing a plurality of movable blocks 21 enclosing the cylindrical structure to rotate for the demolding of the casting.

[0023] The adjustment mechanism 3 includes a plate 31 and a motor A34. A plurality of rotating grooves B32 are formed on the plate 31, and a plurality of rotating grooves B32 are respectively rotationally connected to a plurality of swivel bases 24. A threaded rod 33 is threadedly connected to the plate 31. The motor A34 is fixedly arranged on one side of the bottom end of the installation cavity B13. The bottom end of the threaded rod 33 penetrates into the installation cavity B13 and is fixedly connected to the output shaft of the motor A34. With the above arrangement of the present invention, the motor A34 is controlled to rotate through an external control mechanism. The threaded rod 33 rotates to drive the plate 31 to move up and down, so that a plurality of swivel bases 24 move up and down simultaneously, controlling a plurality of plug blocks B241 to be plugged into or disengaged from the plug slot B227 simultaneously.

[0024] The driving mechanism 4 includes a motor B41, a worm 42 and a worm gear 43. The motor B41 is fixedly arranged on one side of the lower die 1. The worm 42 is rotatably arranged in the mounting cavity B13. One end of the worm 42 close to the motor B41 penetrates through the lower die 1 and is fixedly connected to the motor B41. The worm gear 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 penetrates into the mounting cavity B13 and is fixedly connected to the worm gear 43. With the above arrangement of the present invention, by controlling the rotation of the output shaft of the motor B41 through an external control mechanism, the worm 42 drives the worm gear 43 to rotate, so that the rotating rod 234 and its corresponding gear 233 rotate. The deceleration effect of this structure reduces the high-power requirement of the motor B41 during secondary die-casting.

[0025] A material cavity is formed at the bottom end of the upper die 5, and an input groove 50 communicating with the material cavity is formed on one side of the upper die 5. A die-casting plate 51 is slidably connected to the material cavity. Gate grooves 52 are formed at the bottom end of the die-casting plate 51 at the gap positions between any two die cavities 11. A plurality of connecting rods 53 are fixedly arranged at the top end of the die-casting plate 51. The connecting rods 53 are slidably connected to the upper die 5. The top ends of the plurality of connecting rods 53 all penetrate through the upper die 5 and are fixedly connected through a round plate 54. A connecting column 55 is fixedly arranged at the top end of the round plate 54. Among them, the material cavity includes a plurality of material grooves 56. The material grooves 56 communicate with the die cavities 11, and the material grooves 56 are smaller than the die cavities 11. Adjacent two material grooves 56 are communicated through a through groove 57. A protective column 58 is fixedly arranged in the material groove 56. With the above arrangement of the present invention, the protective column 58 slidably contacts the top ends of a plurality of movable blocks 21 during mold closing, preventing the die-casting liquid from entering the middle gap surrounded by the plurality of movable blocks 21 as Figure 5 shown. After the die-casting liquid enters the material cavity, by driving the movable end of the connecting column 55 through an external hydraulic mechanism, the die-casting plate 51 can send the die-casting liquid into a plurality of die-casting cavities, reducing the situation of insufficient casting, thereby improving the qualified rate. Moreover, after the die-casting part is completed, the gate of the casting is located on the same plane, which is convenient for cutting.

[0026] Working principle: This embodiment provides a die-casting device for copper fittings of a perforating machine. When in use, in the initial state, the movable block 21 is fixed to the insertion slot A15 through the insertion block A225 under the action of the spring 226. The turntable 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 groove 222, and the movable blocks 21 enclose a sealed flower-shaped structure to form a primary die-casting cavity. During mold closing, the molten metal is injected into the material cavity through the input groove 50, and the die-casting plate 51 is pressed down to inject the metal into the die cavity 11 to complete the primary die-casting. The motor B41 drives the gear 233 to rotate through the worm 42 and the worm wheel 43. The adjacent gears 233 rotate in opposite directions, driving the adjustment disk 23 to rotate. The inclined groove 231 pushes the movable column 211 towards the eccentric end of the centripetal groove 222, causing the movable block 21 to radially contract. Some of the threaded grooves 212 are joined to form a threaded cavity, and the die-casting cavity shrinks, realizing secondary precision die-casting. This process compensates for the shrinkage generated during the solidification of the casting, and the shrinkage of the cavity generates secondary pressure, forcing the copper liquid to better fill the fine threaded structure, improving the density of the casting, reducing hole defects, and increasing the yield rate; The motor A34 drives the threaded rod 33 to rotate, driving the plate 31 to rise, so that the insertion block B241 is inserted into the insertion slot B227, pushing the insertion block A225 out of the insertion slot A15 to unlock the turntable 22; The lower die 1 is separated from the upper die 5. The rotation of the adjustment disk 23 drives the rotation of the turntable 22, causing the movable block 21 to rotate synchronously. The column formed by several movable blocks 21 rotates, and the threaded cavity rotates, causing the casting to move upward for demolding.

[0027] The embodiments disclosed in the present invention are preferred embodiments, but are not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of the present invention, they are within the protection scope of the present invention.

Claims

1. A die-casting device for copper fittings of a perforating machine, characterized in that It includes a lower mold, several secondary die-casting mechanisms, an adjustment mechanism, a driving mechanism and an upper mold; A number of mold cavities are evenly formed at the top end of the lower mold; The several secondary die-casting mechanisms are arranged on the lower mold relative to the positions of the several mold cavities. The secondary die-casting mechanism includes several movable blocks, a turntable and an adjustment disk arranged in an annular equidistant structure. A die-casting cavity is formed by the clearance between the several movable blocks and the mold cavity. Any two adjacent movable blocks are slidably connected. An activity column is fixedly arranged at the bottom end of the movable block. The eccentric end of the movable block is in an arc surface structure, and several partial thread grooves are formed at the eccentric end of the movable block; a circular groove is formed at the bottom end of the turntable, and several centripetal grooves are formed at the top end of the turntable in an annular equidistant structure. The activity column is movably connected with the centripetal groove, and the centripetal groove is communicated with the circular groove. The adjustment disk is rotatably arranged on the circular groove, and several inclined grooves are formed at the top end of the adjustment disk in an annular equidistant structure. The bottom end of the activity column penetrates out of the centripetal groove and is movably connected with the inclined groove; When several activity columns are located at the centripetal end of the centripetal groove, several movable blocks enclose a sealed flower-shaped structure; When several activity columns move from the centripetal end of the centripetal groove to the eccentric end, several movable blocks enclose a columnar structure, and several partial thread grooves are communicated to form a thread cavity on the surface of the column, and the die-casting cavity becomes smaller; The adjustment mechanism and the driving mechanism are both arranged on the lower mold.

2. The die-casting device for copper fittings of a perforating machine according to claim 1, wherein, An installation cavity A and an installation cavity B are respectively formed in the lower mold in an up-and-down structure. The installation cavity A is communicated with the several mold cavities through a rotating groove, and a plug-in groove A is formed on the rotating groove.

3. The die-casting device for copper fittings of a perforating machine according to claim 2, wherein, Any two adjacent secondary die-casting mechanisms are symmetrically arranged.

4. The die-casting device for copper fittings of a perforating machine according to claim 3, characterized in that, The turntable is rotatably arranged on the rotating groove. A sliding groove is formed on the outer edge surface of the turntable. An empty groove is formed 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 in plug-in fit with the plug-in groove A. The plug-in block A and the sliding groove are elastically connected by a spring. A plug-in groove B is formed at the bottom end of the plug-in block A.

5. The die-casting device for copper fittings of a punching machine according to claim 4, characterized in that, A sliding rod is fixedly arranged at the bottom end of the adjustment disk. A gear is fixedly arranged at the bottom end of the sliding rod. The bottom end of the gear is rotatably connected with the bottom end of the installation cavity A through a rotating rod. Any two adjacent gears are meshed and connected.

6. The die-casting device for copper fittings of a perforating machine according to claim 5, characterized in that, The secondary die-casting mechanism further includes a rotating seat. The rotating seat is slidably arranged on the sliding rod. A plug-in block B is fixedly arranged at the top end of the rotating seat. The plug-in block B is in plug-in fit with the plug-in groove B, and an inclined guide surface is formed at the top end of the plug-in block B.

7. The die-casting device for copper fittings of a perforating machine according to claim 6, wherein The adjustment mechanism includes a plate and a motor A. Several rotating grooves B are formed on the plate. The several rotating grooves B are respectively rotatably connected with the several rotating seats. A threaded rod is threadedly connected to the plate. The motor A is fixedly arranged 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 with the output shaft of the motor A.

8. The die-casting device for copper fittings of a perforating 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 fixedly arranged on one side of the lower die. The worm is rotatably arranged in the mounting cavity B. One end of the worm close to the motor B penetrates through the lower die 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 penetrates into the mounting cavity B and is fixedly connected to the worm wheel.

9. The die-casting device for copper fittings of a perforating machine according to claim 8, characterized in that A material cavity is formed at the bottom end of the upper die. An input groove communicating with the material cavity is formed on one side of the upper die. A die casting plate is slidably connected to the material cavity. Gate grooves are formed at the bottom end of the die casting plate at the gap positions of any two of the die cavities. A plurality of connecting rods are fixedly arranged at the top end of the die casting plate. The connecting rods are slidably connected to the upper die. The top ends of the plurality of connecting rods all penetrate through the upper die and are fixedly connected through a circular plate. A connecting column is fixedly arranged at the top end of the circular plate.

10. The die-casting device for copper fittings of a punching machine according to claim 9, characterized in that, The material cavity includes a plurality of material grooves. The material grooves communicate with the die cavities, and the material grooves are smaller than the die cavities. Adjacent two of the material grooves are communicated through a through groove. A protective column is fixedly arranged in the material groove.

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