Inner cavity machining device for stamping cover plate

Abstract

The utility model provides an inner cavity machining device for stamping cover plates, which comprises a positioning and clamping device assembled on a cutting machine tool, and the positioning and clamping device comprises a base, a plurality of stamping cover plates and an upper pressing plate piece; the base is connected with an upper pressing plate piece through symmetrically-arranged guide columns, and guide rods used for positioning a plurality of die punching cover plates are symmetrically assembled on the base. An isolating ring is assembled between any two adjacent stamping cover plates; and a spray pipe extends from the high-pressure jet device corresponding to a gap between any two adjacent stamping cover plates. According to the positioning and clamping device, the positioning and clamping device is precisely attached to the stamping cover plates, the coaxiality and parallelism between the stamping cover plates are effectively improved, the perpendicularity and concentricity of the cutting cavity surface and the surfaces of the stamping cover plates are guaranteed, and overall clamping and positioning are stable. And meanwhile, the problems of machining short circuit caused by unsmooth blanking, difficult chip removal and the like during multiple batch machining are solved, the effective machining efficiency is improved, and the quality stability is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of inner cavity processing of die-punched cover plates, and in particular to an inner cavity processing device for die-punched cover plates. Background Art

[0002] CNC reciprocating wire-feed multiple-cutting EDM wire cutting machines use electrode wire (molybdenum wire, tungsten-molybdenum wire, etc.) as tool electrodes. Under the action of pulse voltage, a large amount of heat is instantly generated in the spark channel when the liquid medium is broken down to form an electric spark discharge, causing the metal on the workpiece surface to partially melt or even vaporize, and the metal is etched away by the combined action of the machining fluid.

[0003] However, for the die-punched cover plate used in the mold, the die-punched cover plate cavity processing method adopts the method of clamping the outer cylindrical surface of the die-punched cover plate with flat-nose pliers and placing it on the processing table of the cutting machine tool to process the cavity. This kind of clamping processing method, which simply takes the outer cylindrical surface of the die-punched cover plate as the reference, is very likely to cause large deviations in the verticality of the processing cavity and the plane of the die-punched cover plate, the axial parallelism of the positioning clamping hole of the die-punched cover plate, and the coaxiality of the outer cylindrical surface of the die-punched cover plate. When multiple die-punched cover plates are processed at the same time, they are superimposed together, which easily causes poor blanking and chip removal, resulting in the electrode wire being stuck and bent, processing short circuit, or the cavity cutting deformation and dislocation due to the bending of the electrode wire. Therefore, subsequent correction, debugging, grinding and other process measures are required to improve the cavity processing. This seriously wastes manpower, materials and equipment, and increases the difficulty of subsequent assembly and welding work, and at the same time, it is impossible to obtain effective quality assurance. Utility Model Content

[0004] The present application provides an inner cavity processing device for a die-punched cover plate, which improves the coaxiality and parallelism between the die-punched cover plates, and ensures the verticality and concentricity of the cutting cavity surface and the die-punched cover plate surface, realizes batch processing, solves the problem of processing short circuit, improves the effective processing efficiency, and ensures the stability of quality.

[0005] The present application provides an inner cavity processing device for a die-punched cover plate, the inner cavity processing device for the die-punched cover plate comprises a positioning clamping device mounted on a cutting machine, the positioning clamping device cooperates with an upper guide group and a lower guide group on the cutting machine to cyclically guide an electrode wire;

[0006] The positioning and clamping device comprises: a base, a plurality of die-stamping cover plates stacked and positioned on the base, and an upper pressing plate pressed on the plurality of die-stamping cover plates; wherein,

[0007] The base is connected to the upper pressing plate through symmetrically arranged guide columns, and the base is symmetrically equipped with guide rods for positioning the plurality of die-punched cover plates, and one end of the guide rod away from the base passes through the upper pressing plate;

[0008] An isolation ring is installed between any two adjacent die-punched cover plates;

[0009] The inner cavity processing device of the die-punched cover plate also includes a high-pressure jet connected to the base by magnetic attraction, and the high-pressure jet has a nozzle extending from the gap between any two adjacent die-punched cover plates.

[0010] In this application, the positioning clamping device is precisely fitted with the die punch cover plate, which effectively improves the coaxiality and parallelism between the die punch cover plates, ensures the verticality and concentricity between the cutting cavity surface and the die punch cover plate surface, and the overall clamping positioning is stable. At the same time, it solves the problem of processing short circuits caused by poor material drop and chip removal during multiple batch processing, improves the effective processing efficiency, and ensures the stability of quality.

[0011] In a specific possible implementation scheme, the cutting machine is provided with a platform, and the positioning and clamping device is mounted on the platform and installed with the cutting machine to improve the adaptability.

[0012] In a specific implementation scheme, a reference cavity is provided on the base, and each die punch cover plate is provided with a prefabricated hole for centering and calibration with the reference cavity. During processing, the reference cavity can be used as a centering calibration reference to achieve one-time centering calibration and consistency in subsequent clamping processes.

[0013] In a specific possible implementation scheme, first assembly holes adapted to the two guide rods are symmetrically opened on both sides of the reference cavity;

[0014] Each of the first assembly holes is connected to a first top screw hole, and each of the guide rods is locked and positioned inside the corresponding first assembly hole by a first top screw member, thereby achieving a bottom fixing relationship between the base and the guide rod, and ensuring that the guide rod and the base are in a mutually perpendicular state.

[0015] In a specific possible implementation scheme, each die-punched cover plate is symmetrically provided with positioning and assembly holes corresponding to the two guide rods one by one. A plurality of die-punched cover plates are positioned and clamped in a stacked manner.

[0016] In a specific implementation scheme, two isolation rings are installed between any two adjacent die-punched cover plates, and the two isolation rings are respectively mounted on the two guide rods. This increases the processing blanking space, so that the cut blanks can be easily removed at the gap, effectively solving the processing short circuit problems caused by poor blanking, difficult chip removal, and the above during multiple batch processing.

[0017] In a specific possible implementation, the upper pressure plate is provided with a clearance groove for the electrode wire to pass through, and first clearance holes for the two guide rods to pass through are provided on both sides of the clearance groove. The guide rods are precisely fitted with the positioning assembly holes of the die punching cover plate, and the bottom die punching cover plate is precisely fitted with the upper surface of the base, and the bottom surface of the upper pressure plate is precisely fitted with the upper surface of the top die punching cover plate, thereby improving the coaxiality and parallelism between the die punching cover plates, and ensuring the verticality and concentricity of the cutting cavity surface and the die punching cover plate surface.

[0018] In a specific possible implementation, the base is provided with a second assembly hole for positioning the two guide posts, each of the second assembly holes is connected to a second top screw hole, and each guide post is locked and positioned inside the corresponding second assembly hole by a second top screw. The upper pressure plate and the guide posts work together to effectively fasten multiple die punching cover plates, reduce displacement variables caused by workpiece vibration caused by equipment vibration during the processing, and reduce short circuits, processing cavity dislocations, etc., so that the processing is smooth and the processing stability and consistency are improved.

[0019] In a specific feasible implementation scheme, the upper pressure plate is provided with a second clearance hole for the two guide posts to pass through, each of the second clearance holes is connected to a third top screw hole, and each guide post is locked and positioned inside the corresponding second clearance hole by a third top screw. The second top screw and the third top screw are used to lock and position the upper and lower ends of the guide post, which reduces the interference of external factors on the processing process, effectively improves the processing stability and consistency of processing quality, improves processing efficiency, and directly reduces the subsequent processing of correcting flatness, verticality, parallelism, coaxiality and other processes, effectively achieving the purpose of reducing costs and increasing efficiency.

[0020] In a specific possible implementation scheme, the high-pressure ejector is provided with a magnetic base, and the magnetic base is magnetically connected to the base;

[0021] The bottom of the high-pressure jet is provided with a jet inlet. By jetting high pressure into the gap in the blanking space, the blanking and discharge erosion products are discharged, further solving the problems of wire breakage and low short-circuit efficiency caused by blanking difficulties, blanking jams, blanking wire breaking, blanking bending, and poor discharge of discharge erosion products, thereby improving the effective processing efficiency and ensuring the stability of quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the assembly and use state of the inner cavity processing device of the die-punched cover plate provided in an embodiment of the present application;

[0023] Figure 2 For the provided Figure 1 The structural diagram at A in the middle;

[0024] Figure 3 An exploded schematic diagram of a positioning and clamping device provided in an embodiment of the present application;

[0025] Figure 4 A schematic diagram of the structure of the base provided in the embodiment of the present application;

[0026] Figure 5 A schematic diagram of the structure of the die-punched cover plate provided in an embodiment of the present application.

[0027] Figure Number:

[0028] Cutting machine tool 100, platform 110, wire storage drum 120, upper guide assembly 130, electrode wire 140, lower guide assembly 150;

[0029] Base 10, first top screw member 11, second top screw member 12, second assembly hole 13, second top screw hole 14, first assembly hole 15, first top screw hole 16, reference cavity 17;

[0030] Guide rod - 20;

[0031] Guide column - 30;

[0032] Upper pressing plate member-40, third top screw member-41;

[0033] Die punching cover plate-50, positioning assembly hole-51, prefabricated hole-52;

[0034] Isolation ring - 60;

[0035] High-pressure ejector-70, nozzle-71;

[0036] Magnetic base-80. DETAILED DESCRIPTION

[0037] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0038] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of this specification should be understood by people with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in one or more embodiments of this specification do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0039] In order to facilitate the understanding of the inner cavity processing device of the die-punched cover plate provided in the embodiment of the present application, its application scenario is first explained. The inner cavity processing device of the die-punched cover plate is mainly used in the field of die-punched cover plate inner cavity processing technology. At present, for the die-punched cover plate used in the mold, the die-punched cover plate is processed by clamping its outer cylindrical surface with flat-nose pliers and placing it on the processing table of the cutting machine tool to process the cavity. This kind of clamping processing method, which simply uses the outer cylindrical surface of the die-punched cover plate as a reference, is very likely to cause large deviations in the verticality of the processing cavity and the plane of the die-punched cover plate, the axial parallelism of the positioning clamping hole of the die-punched cover plate, and the coaxiality with the outer cylindrical surface of the die-punched cover plate. When multiple die-punched cover plates are processed at the same time, they are superimposed together, which easily causes poor blanking and chip removal difficulties, resulting in blanking blocking the electrode wire, bending the electrode wire, processing short circuit, or deformation and dislocation of the cavity cutting due to the bending of the electrode wire. Therefore, subsequent correction, debugging, grinding and other process measures are required during cavity processing to improve it. This seriously wastes manpower, materials and equipment, and increases the difficulty of subsequent assembly and welding work, and at the same time, it is impossible to obtain effective quality assurance. In view of this, the present application provides a cavity processing device for die-punched cover plates, which improves the coaxiality and parallelism between die-punched cover plates, and ensures the verticality and concentricity of the cutting cavity surface and the die-punched cover plate surface, realizes batch processing, solves the problem of processing short circuit, improves effective processing efficiency, and ensures stable quality.

[0040] refer to Figure 1, the inner cavity processing device of the die punching cover plate provided in the embodiment of the present application includes a positioning clamping device mounted on the cutting machine 100. In the embodiment of the present application, the wire cutting machine 100 has an upper head part and a lower head part, the upper head part is equipped with an upper guide group 130, the lower head part is equipped with a lower guide group 150, and the positioning clamping device cooperates with the upper guide group 130 and the lower guide group 150 on the cutting machine 100 to circulate and guide the electrode wire 140. Thus, under the cooperation of the upper head part and the lower head part, the routing mode of different cavity processing is realized. In addition, a platform 110 is provided on the cutting machine 100, and the positioning clamping device is mounted on the platform 110. The positioning clamping device is installed with the cutting machine 100 to improve the adaptability. At the same time, when processing other types of workpieces, different positioning auxiliary devices can be installed on the platform 110 to achieve multi-functional utilization. The cutting machine 100 is provided with a wire storage drum 120, which cooperates with the upper guide group 130 and the lower guide group 150 to guide the electrode wire 140. Under the circular guiding action, the electrode wire 140 passes through the positioning clamping device in different circular motions, thereby realizing the inner cavity processing of multiple die-punched cover plates 50. The positioning clamping device is mainly used to position the multiple die-punched cover plates 50 so that their flatness, coaxiality and concentricity are consistent with the processing requirements.

[0041] Combination Figure 2 As shown, the positioning and clamping device includes: a base 10, a plurality of die-stamped cover plates 50 stacked and positioned on the base 10, and an upper pressure plate 40 pressed on the plurality of die-stamped cover plates 50; wherein the base 10 is connected to the upper pressure plate 40 via symmetrically arranged guide columns 30, and the base 10 is symmetrically equipped with guide rods 20 for positioning the plurality of die-stamped cover plates 50, and the end of the guide rod 20 away from the base 10 passes through the upper pressure plate 40.

[0042] The base 10 in the present application is detachably fixedly connected to the platform 110 by bolts. Two guide rods 20 perpendicular to the base 10 are installed and positioned on the base 10, and the two guide rods 20 are used to pass through multiple die-punched cover plates 50. Multiple die-punched cover plates 50 are sequentially installed on the guide rods 20 in a stacked manner, and the prefabricated holes 52 of the die-punched cover plates 50 are coaxially assembled. Two guide columns 30 perpendicular to the base 10 are also installed on the base 10, and an upper pressure plate 40 is installed on the top of the guide column 30. The upper pressure plate 40 is used to press and position multiple die-punched cover plates 50, thereby ensuring that the multiple die-punched cover plates 50 are not affected by external vibrations during processing, and the overall performance is stable during processing.

[0043] Combination Figure 3 and Figure 4As shown in , a reference cavity 17 is opened on the base 10, and the reference cavity 17 is a rectangular cavity. Of course, in other embodiments of the present application, for different inner cavity processing steels of the die-punched cover plate 50, the reference cavity 17 can also be a cavity of other shapes.

[0044] The first assembly holes 15 adapted to the two guide rods 20 are symmetrically opened on both sides of the reference cavity 17; each first assembly hole 15 is connected to a first top screw hole 16, and each guide rod 20 is locked and positioned inside the corresponding first assembly hole 15 by a first top screw member 11. The bottom fixing relationship of the base 10 to the guide rod 20 is realized, ensuring that the guide rod 20 and the base 10 are in a mutually perpendicular state.

[0045] The upper pressing plate 40 is provided with a clearance groove for the electrode wire 140 to pass through, and the two sides of the clearance groove are provided with first clearance holes (not shown in the figure) for the two guide rods 20 to pass through. The guide rods 20 are precisely fitted with the positioning assembly holes 51 of the die punching cover plate 50, and the bottom die punching cover plate 50 is precisely fitted with the upper surface of the base 10, and the bottom surface of the upper pressing plate 40 is precisely fitted with the upper surface of the top die punching cover plate 50, so as to improve the coaxiality and parallelism between the die punching cover plates 50, and ensure the verticality and concentricity between the cutting cavity surface and the die punching cover plate 50 surface.

[0046] The base 10 is provided with a second assembly hole 13 for positioning two guide posts 30, each second assembly hole 13 is connected to a second top screw hole 14, and each guide post 30 is locked and positioned inside the corresponding second assembly hole 13 by a second top screw member 12. The upper pressing plate 40 and the guide posts 30 work together to effectively fasten the multiple die punching cover plates 50, reduce the displacement variable caused by the vibration of the workpiece caused by the vibration of the equipment during the processing, and cause short circuits, dislocation of the processing cavity, etc., so that the processing is smooth and the processing stability and consistency are improved.

[0047] The upper pressure plate 40 is provided with a second clearance hole for two guide posts 30 to pass through. The second clearance hole (not shown in the figure) has the same diameter as the second assembly hole 13. Each second clearance hole is connected to a third top screw hole, and each guide post 30 is locked and positioned inside the corresponding second clearance hole by a third top screw 41. The second top screw 12 and the third top screw 41 are used to lock and position the upper and lower ends of the guide post 30, which reduces the interference of external factors on the processing process, effectively improves the processing stability and consistency of processing quality, improves processing efficiency, and directly reduces the subsequent processing of correcting flatness, verticality, parallelism, coaxiality and other processes, effectively achieving the purpose of reducing costs and increasing efficiency.

[0048] When a plurality of die-punched cover plates 50 are mounted and positioned on two guide rods 20, as shown in FIG. Figure 5As shown in , and when the electrode wire 140 processes the inner cavity of the preformed hole 52, each die-stamped cover plate 50 is provided with a preformed hole 52 that is aligned with the reference cavity 17. During processing, the reference cavity 17 can be referred to as the reference for alignment, so that the subsequent clamping process is consistent with the alignment once. Each die-stamped cover plate 50 is symmetrically provided with positioning and assembly holes 51 that correspond to the two guide rods 20 one by one. It should be understood that the positioning and assembly holes 51, the first assembly holes 15 and the first clearance holes have the same diameter. Multiple die-stamped cover plates 50 are positioned and clamped in a stacked manner. It can be seen that the two guide rods 20 are precisely fitted with the positioning and assembly holes 51 of the multiple stacked die-stamping cover plates 50. After passing through the upper guide group 130, the electrode wire 140 passes through the makeshift groove and enters the makeshift holes of the multiple die-stamping cover plates 50, and passes through the reference cavity 17 and then travels on the lower guide group 150, thereby realizing the inner cavity processing method of different shapes under the action of the upper head part and the lower head part.

[0049] Continue reading Figure 1 and Figure 3 , an isolating ring 60 is installed between any two adjacent die punching cover plates 50; two isolating rings 60 are installed between any two adjacent die punching cover plates 50, and the two isolating rings 60 are respectively mounted on the two guide rods 20. The processing blanking space is increased, so that the cutting blanks can be easily removed at the gap, effectively solving the processing short circuit problems caused by poor blanking, difficult chip removal and the above during multiple batch processing.

[0050] The inner cavity processing device of the die-punched cover plate 50 also includes a high-pressure jet 70 magnetically connected to the base 10, and the high-pressure jet 70 has a nozzle 71 extending corresponding to the gap between any two adjacent die-punched cover plates 50. Specifically, a magnetic base 80 is provided on the high-pressure jet 70, and the magnetic base 80 is magnetically connected to the base 10; a jet access port is provided at the bottom of the high-pressure jet 70. By spraying high pressure into the gap existing in the blanking space, the blanking and the discharge erosion products are discharged, further solving the problems of processing wire breakage and low short-circuit efficiency caused by blanking difficulties, blanking jams, blanking breaking the electrode wire 140, blanking bending the electrode wire 140, and poor discharge of discharge erosion products, thereby improving the effective processing efficiency and ensuring the stability of quality.

[0051] It can be seen that, taking the positioning and assembly hole 51 of the die-punched cover plate 50 as a reference, the base 10 and the guide rod 20 are combined to achieve the precise fit between the outer cylindrical surface of the guide rod 20 and the inner wall surface of the positioning and assembly hole 51 of the multiple die-punched cover plates 50, and the multiple lower surfaces of the die-punched cover plates 50 are precisely fitted with the upper surface of the base 10, which effectively improves the coaxiality and parallelism between the multiple die-punched cover plates 50, and ensures the verticality and concentricity between the cutting cavity surface and the surface of the die-punched cover plate 50. The upper pressure plate 40 and the guide column 30 work together to effectively fasten and support the multiple die-punched cover plates 50, so that the processing process does not move up and down and vibrate. The multiple die-punched cover plates 50 are tightly fitted with the cylindrical surface of the guide rod 20, reducing the displacement variable caused by the vibration of the workpiece caused by the vibration of the equipment during the processing, making the processing smooth and improving the consistency of processing stability. An isolation ring 60 is designed to be added between multiple die-punched cover plates 50, so that there is a gap between the two adjacent die-punched cover plates 50, which increases the processing blanking space, so that the cut blanking can be easily removed here, effectively solving the processing short circuit problems caused by poor blanking, difficult chip removal and the above during multiple batch processing. The external design is equipped with a high-pressure jet 70, which discharges the blanking and discharge erosion products through a high-pressure jet to the existing gap area, further solving the problems of processing wire breakage and low short circuit efficiency caused by difficult blanking, blanking stuck, blanking stuck electrode wire 140, blanking bending electrode wire 140, and poor chip removal of discharge erosion products, thereby improving the effective processing efficiency and ensuring the stability of quality. The device is designed and manufactured based on the positioning and positioning assembly holes 51 of multiple die-punched cover plates 50 and their upper and lower surfaces, reducing the disassembly and assembly time of the device, reducing the interference of external factors on the processing process, effectively improving the processing stability and consistency of workpiece quality and processing efficiency, and directly reducing the subsequent processing of the correction flatness, verticality, parallelism, coaxiality and other processes, effectively achieving the purpose of reducing costs and increasing efficiency. The design combination of the isolation ring 60 and the magnetic high-pressure ejector 70 is specifically designed to solve the problems of difficult chip removal, difficult blanking, blanking breaking the electrode wire 140, blanking bending the electrode wire 140, and cavity deformation and position deviation encountered in the process of batch processing of multiple die-punched cover plates 50 at one time, and the effect is obvious. The base 10 is designed with a prefabricated rectangular reference cavity 17. During processing, the cavity wall can be referred to as the centering calibration reference to achieve a consistent effect of subsequent clamping processing after one-time centering calibration.

[0052] In the present application, the positioning clamping device is precisely fitted with the die punching cover plate 50, which effectively improves the coaxiality and parallelism between the die punching cover plate 50, and ensures the verticality and concentricity between the cutting cavity surface and the die punching cover plate 50 surface, and the overall clamping positioning is stable. At the same time, it solves the problem of processing short circuit caused by poor material dropping, difficult chip removal and the above during multiple batch processing, improves the effective processing efficiency, and ensures the stability of quality.

[0053] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. Based on the concept of the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present specification as above, which are not provided in detail for the sake of simplicity.

[0054] In addition, to simplify the description and discussion, and in order not to obscure one or more embodiments of the present specification, known power / ground connections of other components may or may not be shown in the provided figures. In addition, the device may be shown in the form of a block diagram so as to avoid obscuring one or more embodiments of the present specification, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform on which one or more embodiments of the present specification are to be implemented (i.e., these details should be fully within the scope of understanding of those skilled in the art). Where specific details are set forth to describe exemplary embodiments of the present disclosure, it is apparent to those skilled in the art that one or more embodiments of the present specification may be implemented without these specific details or with variations in these specific details. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0055] One or more embodiments of this specification are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this specification should be included in the scope of protection of this disclosure.

Claims

1. An inner cavity processing device for a die-punched cover plate, comprising a positioning clamping device mounted on a cutting machine, wherein the positioning clamping device cooperates with an upper guide group and a lower guide group on the cutting machine to cyclically guide an electrode wire; characterized in that: The positioning and clamping device comprises: a base, a plurality of die-stamping cover plates stacked and positioned on the base, and an upper pressing plate pressed on the plurality of die-stamping cover plates; wherein, The base is connected to the upper pressing plate through symmetrically arranged guide columns, and the base is symmetrically equipped with guide rods for positioning the plurality of die-punched cover plates, and one end of the guide rod away from the base passes through the upper pressing plate; An isolation ring is installed between any two adjacent die-punched cover plates; The inner cavity processing device of the die-punched cover plate also includes a high-pressure jet connected to the base by magnetic attraction, and the high-pressure jet has a nozzle extending from the gap between any two adjacent die-punched cover plates.

2. The inner cavity processing device of the die-punched cover plate according to claim 1, characterized in that: The cutting machine is provided with a platform, and the positioning and clamping device is assembled on the platform.

3. The inner cavity processing device of the die-punched cover plate according to claim 1, characterized in that: A reference cavity is provided on the base, and a prefabricated hole which is aligned with the reference cavity is provided on each die punching cover plate.

4. The inner cavity processing device of the die-punched cover plate according to claim 3, characterized in that: First assembly holes adapted to the two guide rods are symmetrically provided on both sides of the reference cavity; Each of the first assembly holes is connected to a first top screw hole, and each of the guide rods is locked and positioned inside the corresponding first assembly hole by a first top screw piece.

5. The inner cavity processing device of the die-punched cover plate according to claim 4, characterized in that: Each die punching cover plate is symmetrically provided with positioning and assembly holes corresponding to the two guide rods one by one.

6. The inner cavity processing device of the die-punched cover plate according to claim 5, characterized in that: Two isolation rings are arranged between any two adjacent die punching cover plates, and the two isolation rings are sleeved on the two guide rods in a one-to-one correspondence.

7. The inner cavity processing device of the die-punched cover plate according to claim 6, characterized in that: The upper pressing plate is provided with a clearance groove for the electrode wire to pass through, and first clearance holes for the two guide rods to pass through are provided on both sides of the clearance groove.

8. The inner cavity processing device of the die-punched cover plate according to claim 1, characterized in that: The base is provided with a second assembly hole for positioning the two guide posts, each of the second assembly holes is connected to a second top screw hole, and each of the guide posts is locked and positioned inside the corresponding second assembly hole by a second top screw.

9. The inner cavity processing device of the die-punched cover plate according to claim 8, characterized in that: The upper pressure plate is provided with a second clearance hole for the two guide posts to pass through, each of the second clearance holes is connected to a third top screw hole, and each of the guide posts is locked and positioned inside the corresponding second clearance hole by the third top screw.

10. The inner cavity processing device of the die-punched cover plate according to claim 1, characterized in that: The high-pressure ejector is provided with a magnetic base, and the magnetic base is magnetically connected to the base; The bottom of the high-pressure ejector is provided with an ejection inlet.

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