Automatic blanking, locking and sealing assembly for electric spark piercing copper pipe

Abstract

This application belongs to the technical field of electrical discharge machining (EDM) equipment structure, specifically relating to an automatic feeding, locking, and sealing assembly for EDM-perforated copper tubes. It includes a load-bearing power module, a locking module, and a locking nozzle module. The load-bearing power module, the locking module, and the locking nozzle module are arranged sequentially from top to bottom and each has a copper tube feeding passage. The load-bearing power module includes a load-bearing block, a conveying shaft located inside the load-bearing block, a power cylinder located on the side of the load-bearing block, and a downward pressing plate. The locking module includes a lifting sleeve, a lifting bearing, a first spring, a valve core body, a valve core fixing ring, and a water-stop plug. The locking nozzle module includes a locking nozzle body, a locking nozzle pressing sleeve, and a second spring. The lifting sleeve is fixedly connected to the lifting bearing, the downward pressing plate, and the locking nozzle pressing sleeve. The water-stop plug is an elastic structure configured to deform according to the downward pressure of the valve core body, and the compressed water-stop plug forms a sealing structure.

Description

Technical Field

[0001] This application belongs to the technical field of electrical discharge drilling equipment structure, specifically relating to an automatic material feeding, locking and sealing assembly for electrical discharge drilling copper tubes. Background Technology

[0002] An electrical discharge machining (EDM) drilling machine is a machine tool that uses the principle of electrical discharge machining to process holes smaller than 5mm. It is used to process small and medium-sized punches and dies. Its processing feature is that it is not limited by the hardness of the metal material. The die can be quenched first and then processed with the machine to obtain the required hole shape, so as to ensure quality and improve service life. The tool electrode material can be steel, cast iron, or copper.

[0003] In liquid perforation machines, to achieve reliable sealing, the core design principle of existing stop plugs is to minimize the clearance between the copper supply tube and the guide hole. Since electrodes are often made of copper tubing, which is also known as the copper supply tube, a guide hole needs to be created in the center of the stop plug for the copper supply tube to pass through. The industry standard is to control the diameter of this guide hole to be only slightly larger than the outer diameter of the copper supply tube, which typically varies between 0.1mm and 3mm. The clearance is also kept to be only 0.02mm to 0.05mm. This extremely small clearance design achieves sealing through the tight fit between the outer wall of the copper supply tube and the wall of the stop plug hole. The stop plug hole wall commonly uses elastic materials such as rubber or polytetrafluoroethylene (PTFE), which can fill the gaps using slight material deformation, maximizing the prevention of working fluid leakage under high pressure and ensuring a good seal.

[0004] The design of the waterstop, which relies on a tiny guide hole to ensure a seal, directly leads to significant challenges in the installation of the copper supply tube. The copper supply tube itself has a small diameter and a certain degree of flexibility, especially ultra-fine copper tubes with a diameter of less than 0.5mm, which have extremely poor rigidity and are easily bent. When the copper supply tube is passed through the guide hole of the waterstop, which is only 0.02mm to 0.05mm larger than the tube, misalignment of the hole or slight bending of the copper tube itself can easily cause the copper tube to get stuck at the hole opening. Forcing it in will cause the copper tube to bend, deform, or even break. This not only increases the difficulty of installing the copper supply tube, but also prolongs the processing preparation time due to failed insertion, affecting the continuity of equipment processing. Furthermore, in order to ensure the sealing performance, the existing waterstop requires the copper supply tube to be forcibly passed through the through hole each time. As a result, the through hole of the waterstop gradually widens with the number of times the copper tube is passed through, causing its sealing performance to decline and fail to meet the usage standards, thus reducing its service life. Utility Model Content

[0005] The purpose of this application is to provide an automatic dropping, locking, and sealing assembly for EDM-perforated copper tubes, addressing the shortcomings of existing technologies. In practical applications, this application can switch the state of the locking module through the load-bearing power module, thereby changing whether the locking module is in a sealed structure state and thus altering the ease or difficulty of dropping the copper tube.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] An automatic feeding, locking, and sealing assembly for electrically spark-drilled copper tubes includes:

[0008] The power module includes a support block, a transport shaft located inside the support block, a power cylinder located on the side of the support block, and a pressing action plate located at the output end of the power cylinder. The pressing action plate is located below the support block and is passed through by the transport shaft.

[0009] The locking module includes a lifting sleeve, a lifting bearing, a first spring, a valve core body, a valve core fixing ring, and a water-stop plug. The lifting bearing, the first spring, and the valve core fixing ring are sleeved on the transport shaft and arranged sequentially from top to bottom. The valve core body is located inside the transport shaft and above the water-stop plug. The transport shaft has a moving hole, which provides installation space for the fixed connection between the valve core body and the valve core fixing ring, and also provides movement space for the valve core body.

[0010] The locking valve module includes a locking valve body, a locking valve clamping sleeve, and a second spring. The second spring and the locking valve clamping sleeve are both sleeved on the locking valve body, and the second spring is located between the locking valve body and the locking valve clamping sleeve. The water-stop plug is placed in the placement space formed inside the locking valve body. The locking valve clamping sleeve is provided with a top post facing the valve core fixing ring.

[0011] The load-bearing power module, the locking module, and the locking nozzle module are arranged sequentially from top to bottom and each has a copper tube feeding passage. The lifting sleeve is fixedly connected to the lifting bearing, the pressing action plate, and the locking nozzle pressing sleeve. The water stop plug is set as an elastic structure and is configured to deform according to the pressing of the valve core body. The water stop plug in the compressed state forms a sealing structure.

[0012] As an improvement of the automatic feeding, locking and sealing assembly for EDM perforated copper tubes described in this application, the water-stop plug includes a water-stop top surface near the valve core body and a water-stop bottom surface opposite to the water-stop top surface. Both the water-stop top surface and the water-stop bottom surface are provided with an expansion groove. The expansion groove is configured as a frustum-shaped structure, and the two expansion grooves with the smallest area are connected by a cylindrical channel. The water-stop top surface is also provided with an outward expansion groove, and the expansion groove is located at the center of the outward expansion groove.

[0013] As an improvement to the automatic feeding, locking, and sealing assembly for EDM-perforated copper tubes described in this application, in the assembled state of the sealing structure, the height of the water-stop plug is reduced, and at the same time, the inner diameter of the expansion groove shrinks, thereby forming a tight fit with the external copper tube.

[0014] As an improvement of the automatic unloading and locking sealing assembly for EDM-perforated copper tubes described in this application, the pressing action plate is provided with a mounting hole for the conveying shaft to pass through, the mounting hole extends downward to form a protrusion, the protrusion has a matching thread at a position corresponding to the lifting barrel sleeve, and the lifting bearing is fixedly installed inside the mounting hole.

[0015] As an improvement to the automatic feeding, locking and sealing assembly for EDM-perforated copper tubes described in this application, the valve core retaining ring is provided with two symmetrical retaining holes, and the retaining screw passes through the retaining hole and the moving hole to fix the valve core body and the valve core retaining ring.

[0016] As an improvement to the automatic feeding, locking, and sealing assembly for EDM-perforated copper tubes described in this application, both the upper and lower sections of the valve core body are provided with mounting grooves, and a sealing ring is fixedly installed in the mounting groove.

[0017] As an improvement of the automatic feeding, locking, and sealing assembly for EDM-perforated copper tubes described in this application, the locking nozzle body is provided with a locking nozzle pressure block and a locking nozzle fixing ring. The locking nozzle pressure block abuts against the locking nozzle clamping sleeve and a third spring is provided between the locking nozzle body and the locking nozzle. A headless screw is installed on the locking nozzle pressure block. The side of the headless screw facing the copper tube feeding passage is set with a rough surface structure. The locking nozzle clamping ring is located above the locking nozzle clamping sleeve.

[0018] As an improvement of the automatic feeding, locking and sealing assembly for EDM-perforated copper tubes described in this application, a guide block is provided at the outlet end of the locking nozzle body, and a copper tube exit passage corresponding to the copper tube feeding passage is provided inside the guide block.

[0019] As an improvement of the automatic feeding, locking, and sealing assembly for EDM-perforated copper tubes described in this application, the guide block includes a block body and a guide body extending from the block body toward the locking nozzle body. The guide body has a guide groove on the side away from the block body. The guide groove is configured as a frustum structure. The guide groove has a guide top surface away from the block body and a guide bottom surface opposite to the guide top surface. The area of ​​the guide top surface is larger than the area of ​​the guide bottom surface. The guide bottom surface is connected to the copper tube exit passage.

[0020] The beneficial effects of this application are as follows: In actual use, by controlling the power cylinder in the load-bearing power module, the pressing action plate is made to press down or lift, thereby controlling the lifting sleeve in the locking module to rise and fall. When the pressing action plate is not in the lowered state, there is a distance between the valve core body and the water stop plug, and the water stop plug is in an uncompressed state. At this time, the copper pipe can easily pass through the water stop plug. When the pressing action plate falls, the lifting bearing compresses the first spring, and the valve core fixing ring is pressed down by the first paralysis, which drives the valve core body to compress the water stop plug, so that the water stop plug and the copper pipe fit together to form a sealing structure. At this time, the external water flow can only flow out from the inside of the copper pipe and the copper pipe is in a locked state. When the pressing action plate is lifted, it drives the locking nozzle pressing sleeve to move upward, the top column moves along and lifts the valve core fixing ring, so that the valve core body and the water stop plug separate, the water stop plug rebounds and returns to the uncompressed state, at which time the copper pipe can easily pass through the water stop plug again. This application, through the aforementioned structure, can change the state of the power-bearing module to determine whether the entire component is in a sealed state. While meeting the sealing requirements, it ensures smooth descent of the copper tube, preventing bending, deformation, or even breakage, thus guaranteeing the continuity of equipment processing. Furthermore, when the copper tube descends, it does not need to force its way through the water stop plug, and each compression ensures that the water stop plug returns to a sealed state, guaranteeing its sealing performance and thereby extending its service life. Attached Figure Description

[0021] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0022] Figure 1 This is one of the structural diagrams of this application in an unsealed state.

[0023] Figure 2 This is the second schematic diagram of the structure of this application in an unsealed state (without the lifting sleeve).

[0024] Figure 3 This is one of the structural diagrams of this application in a sealed state.

[0025] Figure 4 This is the second schematic diagram of the structure of this application in a sealed state (without the lifting sleeve).

[0026] Figure 5 This is an exploded view of this application.

[0027] Figure 6 This diagram shows the positional relationship between the stop plug and the valve core body in the sealing state of this application.

[0028] Figure 7 This is a schematic diagram of the water-stop plug in an unsealed state according to this application.

[0029] Figure 8 for Figure 7 A cross-sectional view of the stop plug.

[0030] Figure 9 This is a schematic diagram of the sealing plug of this application in a sealed state.

[0031] Figure 10 for Figure 8 A cross-sectional view of the stop plug.

[0032] Figure 11 This is a schematic diagram of the structure of the guide block in this application.

[0033] Figure 12 This is a schematic diagram of the lifting sleeve of this application.

[0034] The reference numerals in the attached figures are explained as follows:

[0035] 100. Load-bearing power module; 101. Load-bearing block; 102. Transport shaft; 1021. Moving hole; 103. Power cylinder; 104. Pressing action plate; 1041. Mounting hole; 1042. Protrusion;

[0036] 200. Locking module; 201. Lifting sleeve; 2011. Protruding platform; 202. Lifting bearing; 203. First spring; 204. Valve core body; 2041. Mounting groove; 2042. Sealing ring; 205. Valve core retaining ring; 2051. Fixing hole; 206. Water stop plug; 2061. Expansion groove; 2062. Cylindrical channel; 2063. Outward expansion groove;

[0037] 300. Locking nozzle module; 301. Locking nozzle body; 302. Locking nozzle clamping sleeve; 303. Second spring; 304. Top post; 305. Locking nozzle pressing block; 306. Third spring; 307. Locking nozzle clamping ring; 308. Headless screw;

[0038] 400. Guide block; 401. Block body; 402. Guide body; 403. Guide groove. Detailed Implementation

[0039] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "including but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error. Furthermore, terms such as "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] The following is in conjunction with the appendix Figures 1-12 The present application will be further described in detail with reference to specific implementation methods, but this is not intended to limit the present application.

[0043] Implementation

[0044] An automatic feeding, locking, and sealing assembly for electrically spark-drilled copper tubes includes a load-bearing power module 100, a locking module 200, and a locking nozzle module 300 arranged sequentially from top to bottom. All components of the assembly are provided with copper tube feeding passages. The load-bearing power module 100 provides power to change the state of the locking module 200 and the locking nozzle module 300, thereby controlling the ease with which the copper tube passes through and the sealing state of the entire assembly.

[0045] Specifically, the power module 100 includes a support block 101, a transport shaft 102 located inside the support block 101, a power cylinder 103 located on the side of the support block 101, and a pressing action plate 104 located at the output end of the power cylinder 103. The pressing action plate 104 is located below the support block 101 and is passed through by the transport shaft 102. The pressing action plate 104 is provided with a mounting hole 1041 for the transport shaft 102 to pass through. The mounting hole 1041 extends downward to form a protrusion 1042.

[0046] In this embodiment, the power cylinder 103 is provided with two pairs that are symmetrical about the straight line of the transport shaft 102, and the output end of the power cylinder 103 is provided with a block structure to increase the contact area. The pressing action plate 104 is a long strip plate structure. The above-mentioned arrangement of the power cylinder 103 can ensure the stability of the connection and transmission relationship between the two, as well as the balance of the action of the pressing action plate 104.

[0047] Specifically, the locking module 200 includes a lifting sleeve 201, a lifting bearing 202, a first spring 203, a valve core body 204, a valve core retaining ring 205, and a water-stop plug 206. The lifting bearing 202, the first spring 203, and the valve core retaining ring 205 are sleeved on the transport shaft 102 and arranged sequentially from top to bottom. The valve core body 204 is located inside the transport shaft 102 and above the water-stop plug 206. The transport shaft 102 has a moving hole 1021 and a protrusion 104. 2. The external part is provided with matching threads corresponding to the lifting sleeve 201. The lifting bearing 202 is fixedly set inside the mounting hole 1041. The valve core fixing ring 205 is provided with two symmetrical fixing holes 2051. The fixing screw passes through the fixing hole 2051 and the moving hole 1021 to fix the valve core body 204 and the valve core fixing ring 205. The upper and lower sections of the valve core body 201 are provided with mounting grooves 2041. A sealing ring 2042 is fixedly installed in the mounting groove 2041.

[0048] In this embodiment, the valve core body 204 is located inside the transport shaft 102 and has a through hole for the copper tube to fall. The opening of the moving hole 1021 provides installation space for the fixed connection between the valve core body 204 and the valve core fixing ring 205 and provides moving space for the valve core body 204, ensuring the continuity of the pressing action. At the same time, the matching threaded arrangement of the protrusion 1042 and the lifting sleeve 201 facilitates disassembly and facilitates later maintenance and replacement of parts.

[0049] Specifically, the water-stop plug 206 is configured as an elastic structure and is designed to deform according to the downward pressure of the valve core body 204. The water-stop plug 206 in the compressed state forms a sealing structure. The water-stop plug 206 includes a water-stopping top surface near the valve core body 204 and a water-stopping bottom surface opposite to the water-stopping top surface. Both the water-stopping top surface and the water-stopping bottom surface are provided with an expansion groove 2061. The expansion groove 2061 is configured as a frustum structure and the minimum area of ​​the two expansion grooves 2061 is connected by a cylindrical channel 2062. The water-stopping top surface is also provided with an outward expansion groove 2063, and the expansion groove 2061 is located at the center of the outward expansion groove 2063.

[0050] In this embodiment, when the sealing structure is assembled, the height of the water-stop plug 206 after compression is 1 / 2 to 2 / 3 of its height before compression, which causes the inner diameter of the expansion groove 2061 to shrink, thereby forming a tight fit with the external copper tube. The height of compression is set according to the actual situation, and the height of compression also changes when the diameter of the external copper tube changes.

[0051] Specifically, the locking valve module 300 includes a locking valve body 301, a locking valve clamping sleeve 302, and a second spring 303. Both the second spring 303 and the locking valve clamping sleeve 302 are sleeved on the locking valve body 301, with the second spring 303 located between the locking valve body 301 and the locking valve clamping sleeve 302. A water-stop plug 206 is disposed in a space formed inside the locking valve body 301. The locking valve clamping sleeve 302 has a top post 304 facing the valve core fixing ring 205. The locking valve body 301 has a locking valve pressing block 305 and a locking valve fixing ring. The locking valve pressing block 305 abuts against the locking valve clamping sleeve 302 and is in contact with the locking valve body. A third spring 306 is provided between the bodies 301. A headless screw 308 is installed on the locking mouth pressure block 305. The side of the headless screw 308 facing the copper tube feeding passage is set with a rough surface structure, which can further increase the tightness of the locking mouth module 300 to the feeding copper tube. The locking mouth clamping ring 307 is located above the locking mouth clamping sleeve 302. A protruding body 2011 is provided on the inner wall of the lifting sleeve 201 to match the locking mouth clamping sleeve 302, which can make the locking mouth clamping sleeve 302 move with the up and down movement of the lifting sleeve 201, thereby controlling the change of the locking state of the locking mouth body 301 and ensuring its normal operation.

[0052] Specifically, a guide block 400 is provided at the outlet end of the locking nozzle body 301. The guide block 400 has a copper tube exit passage corresponding to the copper tube drop passage. The guide block 400 includes a block body 401 and a guide body 402 extending from the block body 401 toward the locking nozzle body 301. The side of the guide body 402 away from the block body 401 has a guide groove 403. The guide groove 403 is a frustum structure. The guide groove 403 has a guide top surface away from the block body 401 and a guide bottom surface opposite to the guide top surface. The area of ​​the guide top surface is larger than the area of ​​the guide bottom surface. The guide bottom surface is connected to the copper tube exit passage. The setting of the guide block 400 can ensure the direction and specific position of the external copper tube falling. At the same time, the setting of the guide groove 403, compared with the setting of only one copper tube exit passage, facilitates the passage of the external copper tube and further increases its processing accuracy.

[0053] It is understood that in this embodiment, in order to ensure the smooth drop of the copper tube, the conveying shaft 102 is a hollow tubular structure. The components inside the conveying shaft 102, as well as the components corresponding to and below the conveying shaft 102, are all provided with internal passages to form a complete and corresponding copper tube dropping passage, so as to ensure the realization of its basic function. At the same time, the springs are provided to provide power for deformation, making the movement of the components smoother.

[0054] In practical applications, an external component for clamping the copper drum is provided above the power module 100. When the locking and sealing component is not closed, there is a distance between the valve core body 204 and the water stop plug 206. The water stop plug 206 is in an uncompressed state. At this time, the expansion groove 2061 is a frustum structure. The surface area of ​​the expansion groove 2061 on the top surface of the water stop plug is larger than the surface area of ​​the cylindrical channel 2062. The locking nozzle body 301 is not locked by the locking nozzle clamping sleeve 302 and the locking nozzle clamping ring 307. The third spring 306 is in an uncompressed state, which makes it easy for the external copper tube to pass through and ensures the smoothness of the external copper tube falling. When the copper tube needs to be fixed for processing, the output end of the power cylinder 103 in the power module 100 presses down to provide power for the pressing action plate 104. At the same time, the lifting bearing 202 compresses the first spring 203 with the pressing action plate 104. The first spring 203 is in a compressed state and squeezes the valve core fixing ring 205 to descend, driving the valve core body 204 to descend. 04. Pressing down compresses the water-stop plug 206, causing it to deform and the expansion groove 2061 to contract until it fits against the external copper tube, placing it in a sealed and compressed state. Simultaneously, the locking nozzle clamping sleeve 302 and the locking nozzle clamping ring 307 are both pressed down, and the second spring 303 and the third spring 306 are both compressed, placing the locking nozzle body 301 in a sealed state, sealing and locking the copper tube within the assembly. After processing, the output end of the power cylinder 103 rises, lifting the pressing action plate 104. The lifting mechanism provides power, causing the lifting sleeve 201 to rise. The protruding platform 2011 at its bottom lifts the locking ring 307, and the locking body 301 returns to the unlocked state. The top column 304 pushes the valve core fixing ring 205 to rise. At the same time, the lifting bearing 202 follows the rise of the pressing action plate 104 and releases the pressure on the first spring 203, allowing the valve core body 204 to separate from the water stop plug 206. The water stop plug 206 rebounds and returns to the uncompressed state, allowing the external copper pipe to fall.

[0055] The beneficial effects of this embodiment are that, through the above-described structure, the copper tube can fall smoothly when the component is in an unsealed state, avoiding bending, deformation, or even breakage of the copper tube. At the same time, during processing, the component changes to a sealed state, allowing the external copper tube to be fixed and sealed in a set position, ensuring the normal realization of basic processing functions. In addition, each time the copper tube falls, it does not need to force its way through the stop plug 206, and the falling of the valve core body 204 can compress the stop plug 206, ensuring the sealing performance of the stop plug 206 and thus increasing its service life.

[0056] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0057] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this application is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on this application are within the scope of protection of this application. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this application.

Claims

1. An automatic feeding, locking, and sealing assembly for electrically spark-drilled copper tubes, characterized in that, include: The power module (100) includes a support block (101), a transport shaft (102) located inside the support block (101), a power cylinder (103) located on the side of the support block (101), and a pressing action plate (104) located at the output end of the power cylinder (103). The pressing action plate (104) is located below the support block (101) and is passed through by the transport shaft (102). The locking module (200) includes a lifting sleeve (201), a lifting bearing (202), a first spring (203), a valve core body (204), a valve core fixing ring (205), and a water stop plug (206). The lifting bearing (202), the first spring (203), and the valve core fixing ring (205) are sleeved on the transport shaft (102) and arranged sequentially from top to bottom. The valve core body (204) is located inside the transport shaft (102) and above the water stop plug (206). The transport shaft (102) has a moving hole (1021). The moving hole (1021) is used to provide installation space for the fixed connection between the valve core body (204) and the valve core fixing ring (205) and to provide moving space for the valve core body (204). The locking valve module (300) includes a locking valve body (301), a locking valve clamping sleeve (302), and a second spring (303). The second spring (303) and the locking valve clamping sleeve (302) are both sleeved on the locking valve body (301), and the second spring (303) is located between the locking valve body (301) and the locking valve clamping sleeve (302). The water stop plug (206) is disposed in the placement space formed inside the locking valve body (301). The locking valve clamping sleeve (302) is provided with a top post (304) facing the valve core fixing ring (205). The load-bearing power module (100), the locking module (200) and the locking nozzle module (300) are arranged sequentially from top to bottom and each has a copper tube dropping passage. The lifting sleeve (201) is fixedly connected to the lifting bearing (202), the pressing action plate (104) and the locking nozzle pressing sleeve (302). The water stop plug (206) is set as an elastic structure and is configured to deform according to the pressing of the valve core body (204). The water stop plug (206) in the compressed state forms a sealing structure.

2. The automatic feeding, locking, and sealing assembly for EDM-perforated copper tubes as described in claim 1, characterized in that, The water-stop plug (206) includes a water-stop top surface near the valve core body (204) and a water-stop bottom surface opposite to the water-stop top surface. Both the water-stop top surface and the water-stop bottom surface are provided with an expansion groove (2061). The expansion groove (2061) is set as a frustum structure and the two expansion grooves (2061) with the smallest area are connected by a cylindrical channel (2062). The water-stop top surface is also provided with an outward expansion groove (2063). The expansion groove (2061) is located at the center of the outward expansion groove (2063).

3. The automatic feeding, locking, and sealing assembly for EDM-perforated copper tubes as described in claim 2, characterized in that, In the assembled state of the sealed structure, the height of the water-stop plug (206) is reduced, and the inner diameter of the extended groove (2061) shrinks, thereby forming a tight fit with the external copper tube.

4. The automatic feeding, locking, and sealing assembly for EDM-perforated copper tubes as described in claim 1, characterized in that, The pressing action plate (104) is provided with a mounting hole (1041) for the conveying shaft (102) to pass through. The mounting hole (1041) extends downward to form a protrusion (1042). The protrusion (1042) is provided with a matching thread at a position corresponding to the lifting sleeve (201). The lifting bearing (202) is fixedly disposed inside the mounting hole (1041).

5. The automatic feeding, locking, and sealing assembly for EDM-perforated copper tubes as described in claim 1, characterized in that, The valve core retaining ring (205) is provided with two symmetrical retaining holes (2051). The retaining screw passes through the retaining hole (2051) and the moving hole (1021) to fix the valve core body (204) and the valve core retaining ring (205).

6. The automatic feeding, locking, and sealing assembly for EDM-perforated copper tubes as described in claim 1, characterized in that, The upper and lower sections of the valve core body (204) are provided with mounting grooves (2041), and a sealing ring (2042) is fixedly installed in the mounting grooves (2041).

7. The automatic feeding, locking, and sealing assembly for EDM-perforated copper tubes as described in claim 1, characterized in that, The locking body (301) is provided with a locking block (305) and a locking ring. The locking block (305) abuts against the locking sleeve (302) and a third spring (306) is provided between the locking block (301) and the locking body (301). A headless screw (308) is installed on the locking block (305). The side of the headless screw (308) opposite to the copper tube feeding passage is set with a rough surface structure. The locking ring (307) is located above the locking sleeve (302).

8. The automatic feeding, locking, and sealing assembly for EDM-perforated copper tubes as described in claim 1, characterized in that, The outlet end of the locking body (301) is provided with a guide block (400), and the guide block (400) is provided with a copper tube exit passage corresponding to the copper tube dropping passage.

9. The automatic feeding, locking, and sealing assembly for EDM-perforated copper tubes as described in claim 8, characterized in that, The guide block (400) includes a block body (401) and a guide body (402) extending from the block body (401) toward the lock body (301). The guide body (402) has a guide groove (403) on the side away from the block body (401). The guide groove (403) is configured as a frustum structure. The guide groove (403) has a guide top surface away from the block body (401) and a guide bottom surface opposite to the guide top surface. The area of ​​the guide top surface is larger than the area of ​​the guide bottom surface. The guide bottom surface is connected to the copper tube through passage.

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