A triangular needle EDM needle loading device

Abstract

The present invention belongs to the technical field of triangular needle production and processing, and specifically relates to a triangular needle discharge machining needle device, comprising a base plate and a support frame, the support frame is located on one side of the base plate, a needle box and a needle feeding mechanism are arranged on the support frame from top to bottom in sequence, a needle drop port is arranged at the bottom of the needle box, the needle feeding mechanism comprises a needle ring, a needle feeding seat and a needle feeding motor, the needle ring is a horizontally arranged cylindrical structure and is rotatably mounted on the needle feeding seat, the needle ring is connected to the needle feeding motor, and at least two needle feeding grooves parallel to its central axis are evenly distributed on its outer circumference, a needle support frame is arranged at the upper end of the base plate, a needle support groove is arranged at the upper end of the needle support frame, the needle support groove is located directly below the needle ring, and a needle pushing device matched with the needle support frame is arranged on one side of the needle support frame. The present invention utilizes the mutual cooperation of various components to load, divide, push and clamp needles in sequence, accurately and efficiently complete the needle work, save time and labor, and the clamping position and depth standard of the needle body are uniform each time the needle is put on, effectively ensuring product quality.

Description

Technical Field

[0001] The invention belongs to the technical field of production and processing of triangular needles, and in particular relates to a triangular needle electric discharge machining needle-loading device. Background Art

[0002] When producing and processing medical triangular needles, usually the hollow round stainless steel tube is first cut into a needle body of a fixed length, one end of the needle body is rolled into a closed cone-shaped structure using specific processing equipment, and then the end is ground into a triangular cone with three facets. Finally, the three facets are respectively punched with electric spark discharge to connect them with the cavity inside the needle body for easy infusion. At present, before grinding and punching, triangular needles usually need to be manually inserted and the needle body is clamped and fixed. This operation method is not only time-consuming and labor-intensive, but also inefficient. Therefore, it is urgently necessary to provide a triangular needle discharge processing needle insertion device to solve this technical problem, reduce labor intensity, and improve the needle insertion efficiency of the needle body, so as to lay a foundation for realizing the continuous production and processing of triangular needles. Summary of the invention

[0003] In view of the deficiencies in the background technology, the present invention provides a triangular needle electric discharge machining needle loading device, which can effectively improve the needle loading efficiency, save time and labor, and lay the foundation for realizing the continuous production and processing of triangular needles.

[0004] To achieve the above purpose, the technical solution of the present invention is as follows:

[0005] A triangular needle electric discharge machining needle device, characterized in that it includes a base plate and a support frame, the support frame is located on one side of the base plate, and a needle box and a needle feeding mechanism are sequentially arranged on the support frame from top to bottom, a needle drop port is provided at the bottom of the needle box, and the needle feeding mechanism includes a needle ring, a needle feeding seat and a needle feeding motor, the needle ring is a horizontally arranged cylindrical structure and is rotatably installed on the needle feeding seat, the needle ring is connected to the needle feeding motor, and at least two needle feeding grooves parallel to its central axis are evenly distributed on its outer circumferential surface, a needle supporting frame is provided on the upper end of the base plate, a needle supporting groove is provided on the upper end of the needle supporting frame, and the needle supporting groove is located directly below the needle ring, and a needle pushing device matching the needle ring is provided on one side of the needle supporting frame.

[0006] Preferably, a lifting frame is slidably connected to the support frame, and is provided with a first driving device for driving the lifting frame to move up and down along the support frame, and the needle box and the needle feeding mechanism are both installed on the lifting frame.

[0007] Preferably, the needle support rack includes a fixed needle rack, a movable needle rack slidably connected to the fixed needle rack up and down, and an elastic guide assembly, the elastic guide assembly is connected between the fixed needle rack and the movable needle rack, and the needle support groove is composed of a fixed card slot provided at the top of the fixed needle rack and a movable card slot provided at the top of the movable needle rack.

[0008] Preferably, the needle pushing device includes a movable seat, a needle pushing member and a second driving device, one side of the movable seat is connected to the second driving device for driving it to slide horizontally along the bottom plate, and the other side is connected to the needle pushing member that cooperates with the needle support frame, the needle pushing member is provided with a pin hole, and a roller is provided at its lower end, and the roller cooperates with the sloped surface provided on the top of the movable needle frame.

[0009] Preferably, the elastic guide assembly includes a guide rod and a first spring, the guide rod is mounted on the fixed needle holder, the movable needle holder is slidably connected to the guide rod, and the first spring is sleeved on the guide rod and located between the fixed needle holder and the movable needle holder.

[0010] Preferably, the fixed needle holder is an L-shaped structure consisting of a support and a vertical plate vertically connected, the guide rod is vertically arranged on the support, the movable needle holder is sleeved on the guide rod, the vertical plate is provided with a support rod, and the support rod is cooperated and connected with a slide groove provided on the movable needle holder.

[0011] Preferably, the needle feeding seat is a hollow cylindrical structure matching the needle ring, with an upper opening corresponding to the needle drop opening at its upper end and a lower opening for the needle body to drop down at its lower end.

[0012] Preferably, the vertical cross-sections of the needle feeding groove and the needle supporting groove are both V-shaped, and their sizes correspond to the needle body to be processed.

[0013] Preferably, a base is provided below the support frame, a substrate and a third driving device for driving the substrate to slide horizontally are slidably connected to the base, the support frame is installed on the substrate, the bottom plate is slidably connected to the upper end of the substrate, and a fourth driving device for driving the bottom plate to slide horizontally is provided on the substrate.

[0014] Preferably, the needle upper device also includes a needle clamping mechanism, which includes a jacket and a sleeve arranged outside the jacket, one end of the jacket is a conical structure composed of at least two movable parts with a needle clamping groove in the middle and expanding outward, and a groove is provided between each adjacent two movable parts. The sleeve is a hollow structure with openings at both ends, and the inner wall of one end is provided with an inner conical surface matching the conical structure, and the other end is provided with a control component for controlling the expansion and contraction of the conical structure.

[0015] Preferably, the control assembly includes a pull rod, a second spring, a baffle and a needle clamping cylinder, one end of the pull rod is connected to the clamping sleeve, and the other end passes through the sleeve and is connected to the baffle. The pull rod is sleeved with a second spring, and the second spring is located between the baffle and the end of the sleeve away from the conical structure. One end of the pull rod passes through the baffle and is connected to the output shaft of the needle clamping cylinder.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The present invention utilizes the cooperation of the needle box, the needle feeding mechanism, the needle support frame, the needle pushing device and the needle clamping mechanism to sequentially complete the functions of feeding, dividing the needle, pushing the needle and clamping the needle, and accurately and efficiently completes the needle loading work of the needle clamping mechanism, saving time and labor, and improving the needle loading efficiency. In addition, the clamping position and depth of the needle body are uniform each time the needle is loaded, effectively ensuring the product quality;

[0018] (2) The present invention arranges the triangular needles to be processed neatly in a needle box, and the needle feeding motor drives the needle ring to rotate, so that the needle bodies in the needle box fall into the needle feeding grooves on the needle ring one by one, effectively separating the needle bodies one by one, facilitating the subsequent needle pushing and clamping work, and laying a foundation for realizing the continuous production and processing of triangular needles;

[0019] (3) The needle holder of the present invention has an ingenious structural design. The elastic guide assembly is used to enable the movable needle holder to move up and down along the fixed needle holder, thereby preventing the needle pusher from being blocked by the movable needle holder and being unable to push the needle body toward the needle clamping mechanism. When the needle pusher pushes the needle body toward the needle clamping mechanism, the movable needle holder moves downward, and when the needle pusher finishes pushing the needle, the movable needle holder automatically resets, which is convenient to use.

[0020] (4) The needle clamping mechanism of the present invention has a novel structure, and uses a second spring to adjust the force balance between the pull rod, the clamping sleeve and the sleeve. When the pull rod is pushed toward the fixed needle holder, the pull rod drives the clamping sleeve to move away from the sleeve, and the movable part opens to put the needle in / out. Conversely, when the push on the pull rod is eliminated, the pull rod, under the action of the second spring, drives the clamping sleeve to move away from the fixed needle holder, and the movable part is squeezed by the inner conical surface of the sleeve to clamp the needle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objectives and advantages of the present invention will become more apparent from a reading of the detailed description of non-limiting embodiments made with reference to the following accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a structural schematic diagram of another viewing angle of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the present invention in use state;

[0025] Figure 4 It is a schematic diagram of the connection structure of the needle box, the needle feeding mechanism, the needle support frame and the support frame of the present invention;

[0026] Figure 5 It is a schematic diagram of the connection structure between the needle box, the needle feeding mechanism and the needle support frame of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the needle support frame and the needle pusher of the present invention;

[0028] Figure 7 This is a schematic diagram of the fixed needle holder structure of the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the movable needle holder of the present invention;

[0030] Fig. 9 This is a schematic diagram of the connection structure between the needle ring and the needle feeding seat of the present invention;

[0031] Fig.10 This is a schematic diagram of the needle feeding seat structure of the present invention;

[0032] Fig.11 It is a schematic diagram of the needle ring structure of the present invention;

[0033] Fig.12 It is a schematic diagram of the cross-sectional structure of the needle box of the present invention;

[0034] Fig.13 It is a schematic diagram of the structure of the needle clamping mechanism of the present invention;

[0035] Fig.14 It is a schematic cross-sectional view of the needle clamping mechanism of the present invention;

[0036] Fig.15 This is a schematic diagram of the jacket structure of the present invention;

[0037] In the figure: 1, bottom plate, 2, support frame, 3, needle box, 301, needle drop port, 4, needle ring, 401, needle feeding slot, 5, needle feeding seat, 501, upper opening, 502, lower opening, 6, needle feeding motor, 7, lifting frame, 8, fixed needle frame, 801, fixed card slot, 802, support, 803, vertical plate, 804, support rod, 9, movable needle frame, 901, movable card slot, 902, sloped surface, 903, slide groove, 10, movable seat, 11, needle pusher, 12, ejector hole, 13, roller, 14, guide rod, 15, first spring, 16, base, 17, substrate, 18, jacket, 180 1. movable part, 1802. needle clamping groove, 1803. groove, 19. sleeve, 1901. inner cone, 20. pull rod, 21. second spring, 22. baffle, 23. needle clamping cylinder, 24. rotary table, 25. first motor, 26. first driving wheel, 27. first driven wheel, 28. first synchronous belt, 29. first lead screw, 30. first slide rail, 31. second motor, 32. second lead screw, 33. second slide rail, 34. second driven wheel, 35. third cylinder, 36. third slide rail, 37. fourth cylinder, 38. fourth slide rail, 39. fixed plate, 40. fifth slide rail. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] In the description of the present invention, it is necessary to understand that the terms "middle", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, a triangular needle EDM needle loading device comprises a base plate 1, a support frame 2 and a needle clamping mechanism. The support frame is located on one side of the base plate. A needle box 3 and a needle feeding mechanism are arranged on the support frame from top to bottom. A needle drop port 301 is arranged at the bottom of the needle box. Fig.12 As shown, the needle box is a hollow structure with an open top, a narrow rectangular parallelepiped structure at the top, and an inverted cone-shaped vertical section at the bottom. The inner cavity size matches the size of the needle body. Fig. 9 , Fig.10 and Fig.11As shown, the needle feeding mechanism includes a needle ring 4, a needle feeding seat 5 and a needle feeding motor 6. The needle ring is a horizontally arranged cylindrical structure and is rotatably installed on the needle feeding seat through a bearing. The needle ring is connected to the needle feeding motor. The needle ring is located directly below the needle drop port, and at least two needle feeding grooves 401 parallel to its central axis are evenly distributed on its outer circumference. The length direction of the needle feeding groove is consistent with the placement direction of the needle body in the needle box. The needle feeding seat is a hollow cylindrical structure matching the needle ring. The needle feeding seat is sleeved on the outside of the needle ring, and the gap between the needle ring and the inner wall of the needle feeding seat is smaller than the diameter of the needle body. An upper opening 501 corresponding to the needle drop port is provided at the upper end of the needle feeding seat, and a lower opening 502 for the needle body to fall is provided at the lower end. A needle supporting frame is provided at the upper end of the bottom plate, and a needle supporting groove is provided at the upper end of the needle supporting frame. The needle supporting groove is located directly below the lower openings of the needle ring and the needle feeding seat, and a needle pushing device matching the same is provided on one side of the needle supporting frame. The staff puts the needle body to be processed into the top of the needle box, and the needle body falls from the needle drop port, and falls into the needle feeding groove at the top of the needle ring through the upper opening of the needle feeding seat. The needle feeding motor drives the needle ring to rotate, and then the needle body at the bottom of the needle box falls into the needle feeding groove at the top of the rotated needle ring again, and so on, so that the needle bodies to be processed in the needle box are separated one by one, and when the needle feeding groove carrying the needle body rotates to the bottom, the needle body falls from the lower opening into the needle supporting groove of the needle supporting frame, and then the needle pushing device pushes the needle body to the needle clamping mechanism on one side, and the needle clamping mechanism clamps and fixes the needle body, thereby realizing the needle loading function. Figure 3 As shown, there are multiple needle clamping mechanisms, which are distributed in groups and evenly distributed on the rotary table 24. In this embodiment, every four needle clamping mechanisms form a group, and the rotary table is driven to rotate by a rotary motor (not shown in the figure), and cooperate with the needle feeding device and the needle pushing device to realize the needle loading function of each needle clamping mechanism. The needle box, needle feeding mechanism, needle support frame and needle pushing device are all two groups, and each group has two needle clamping mechanisms for needle loading, which is convenient for mass production and processing of triangular needles.

[0042] like Figures 1 to 4 As shown, a lifting frame 7 is slidably connected to the support frame, and a first driving device is provided for driving the lifting frame to move up and down along the support frame. The needle box and the needle feeding mechanism are both installed on the lifting frame. The first driving device adopts a motor-screw transmission mechanism, which specifically includes a first motor 25, a first driving wheel 26, a first driven wheel 27, a first synchronous belt 28, a first screw 29, and a first slide rail 30. The first motor drives the first driving wheel to rotate, and the first driving wheel drives the first driven wheel to rotate through the synchronous belt. The first driven wheel is connected to the first screw and drives it to rotate. The lifting frame is threadedly connected to the screw and is slidably connected to the first slide rail provided on the support frame, thereby realizing the synchronous lifting and lowering of the needle box and the needle feeding mechanism, adjusting the distance between it and the needle support frame, and ensuring that the needle falling from the opening under the needle feeding seat of the needle feeding mechanism accurately falls into the needle supporting groove of the needle support frame. The needle box and the needle feeding mechanism can be lifted and lowered, which also facilitates the replacement and maintenance of each component.

[0043] like Figure 6 , Figure 7 and Figure 8 As shown, the needle holder includes a fixed needle holder 8, a movable needle holder 9 slidably connected to the fixed needle holder up and down, and an elastic guide assembly, the elastic guide assembly is connected between the fixed needle holder and the movable needle holder, the elastic guide assembly includes a guide rod 14 and a first spring 15, the guide rod is mounted on the fixed needle holder, the movable needle holder is slidably connected to the guide rod, the first spring is sleeved on the guide rod and is located between the fixed needle holder and the movable needle holder, when the movable needle holder is subjected to downward pressure from the outside, it can move downward along the guide rod, the fixed needle holder is formed by the support 80 2 and the vertical plate 803 are vertically connected to form an L-shaped structure, the guide rod is vertically arranged on the support, the movable needle holder is sleeved on the guide rod, a support rod 804 is provided on the vertical plate, the support rod is connected with the slide groove 903 provided on the movable needle holder, the support rod and the slide groove cooperate to enhance the stability of the movement of the movable needle holder, the needle support groove is composed of a fixed card slot 801 provided at the top of the fixed needle holder and an active card slot 901 provided at the top of the movable needle holder, the elastic guide component is in a natural state, the fixed card slot and the active card slot are on the same straight line, One end of the whole body that falls down from the lower opening of the needle feeding seat is located in the fixed card slot, and the other end is located in the movable card slot. The needle pushing device includes a movable seat 10, a needle pushing member 11 and a second driving device. One side of the movable seat is connected to a second driving device that drives it to slide horizontally along the bottom plate, and the other side is connected to a needle pushing member that cooperates with the needle support frame. The needle pushing member is provided with an ejector hole 12, and the ejector hole is located on the extension line of the fixed card slot. A roller 13 is provided at the lower end of the needle pushing member, and the roller cooperates with the sloped surface 902 provided on the top of the movable needle frame. When the second driving device drives When the movable needle pusher moves toward the side of the fixed needle holder, one end of the needle body is inserted into the ejector hole, and the roller is fitted against the upper end surface of the movable needle holder. As the needle pusher continues to translate, the roller enters the sloped surface, thereby driving the movable needle holder to move downward. At this time, the needle body is disengaged from the movable slot, and the needle pusher pushes the needle body to move toward the side of the fixed needle holder until it is inserted into the needle clamping mechanism. After the needle pusher reaches the predetermined position (the needle body is inserted into the needle clamping mechanism), the second driving mechanism drives it to reset, and under the action of the first spring, the movable needle holder returns to its original state. The vertical cross-sections of the needle feeding groove and the needle supporting groove are both V-shaped, and their sizes correspond to the needle body to be processed. In this embodiment, the second driving device also adopts a motor-screw transmission mechanism, specifically including a second motor 31, a second screw 32, a second slide rail 33, a second driving wheel (not shown in the figure), and a second driven wheel 34. The movable frame is threadedly connected to the second screw and slidingly connected to the second slide rail on the bottom plate. The second screw is rotatably connected to the support frame and connected to the second driven wheel. The second driven wheel is connected to the second driving wheel through a second synchronous belt. The second driving wheel is connected to the second motor. The second motor drives the second driving wheel to rotate, which in turn drives the second driven wheel and the second screw to rotate, thereby driving the movable frame and the needle pushing member connected thereto to move back and forth horizontally.

[0044] like Figures 1 to 3As shown, a base 16 is arranged below the support frame, and a substrate 17 and a third driving device for driving the substrate to slide horizontally are slidably connected on the base. The support frame is mounted on the substrate, and the bottom plate is slidably connected to the upper end of the substrate. A fourth driving device for driving the bottom plate to slide horizontally is arranged on the substrate. In this embodiment, the third driving device includes a third cylinder 35 and a third slide rail 36. The third cylinder is connected to the substrate, and the substrate is slidably connected to the third slide rail arranged on the base, so that the support frame, the bottom plate, the needle box, the needle feeding mechanism, and the needle support frame can be horizontally moved as a whole. The fourth driving device includes a fourth cylinder 37 and a fourth slide rail 38. The fourth cylinder is connected to the bottom plate, and the bottom plate is slidably connected to the fourth slide rail arranged on the substrate, so as to facilitate the horizontal movement of the support frame needle support frame and adjust the distance between it and the needle clamping mechanism, that is, the sliding direction of the substrate on the base and the sliding direction of the bottom plate on the substrate are perpendicular to each other.

[0045] like Figures 13 to 15 As shown, the needle clamping mechanism includes a jacket 18 and a sleeve 19 disposed outside the jacket. One end of the jacket is a conical structure with at least two movable parts 1801 and a needle clamping groove 1802 in the middle, which expands outward. A groove 1803 is provided between each two adjacent movable parts. The provision of the groove can facilitate the expansion and contraction of the movable part at the end of the jacket. The sleeve is a hollow structure with two openings at both ends. The inner diameter of the port at one end is smaller than the outer diameter of the jacket, and an inner conical surface 1901 matching the conical structure is provided on the inner wall of the end. A control component for controlling the expansion and contraction of the conical structure is provided at the other end. When the jacket moves away from the fixed needle holder, the movable part is squeezed by the inner conical surface and moves toward the middle, thereby clamping and fixing the needle body in the needle clamping groove at the center; conversely, when the jacket moves toward the fixed needle holder, the movable part expands outward under its own elasticity, thereby releasing the clamping of the movable part on the needle body, and the needle body can be taken out of the needle clamping groove. The control assembly includes a pull rod 20, a second spring 21, a baffle 22 and a needle clamping cylinder 23. One end of the pull rod is connected to the jacket, and the other end passes through the sleeve and is connected to the baffle. The pull rod is sleeved with a second spring, which is located between the baffle and the end of the sleeve away from the conical structure. One end of the pull rod passes through the baffle and is connected to the output shaft of the needle clamping cylinder. In this embodiment, the second spring adopts a disc spring, and the position of the baffle on the pull rod can be freely adjusted. It can be threaded, so that the second spring can be used to adjust the force balance between the pull rod, the jacket and the sleeve. When the pull rod is pushed toward the side close to the fixed needle holder, the pull rod drives the jacket to move toward the side away from the sleeve, and the movable part opens to remove the needle body; conversely, when the push on the pull rod is eliminated, the pull rod drives the jacket to move toward the side away from the fixed needle holder under the action of the second spring, and the movable part is squeezed by the inner conical surface of the sleeve to clamp the needle body. Figure 1The needle clamping cylinder shown in the figure is not fixedly connected to the pull rod, and a fixed plate 39 is provided on the rotary workbench, and a fifth slide rail 40 is slidably connected to the fixed plate. A fifth cylinder (not shown in the figure) is connected to the needle clamping cylinder and is slidably connected to the fifth slide rail. The needle clamping cylinder has two output shafts, which can simultaneously control the pull rods of the needle clamping mechanism. When the fifth cylinder drives the needle clamping cylinder to move horizontally, the two output shafts of the needle clamping cylinder can cooperate with the pull rods of the other two needle clamping mechanisms, thereby realizing the simultaneous control of four needle clamping mechanisms by one cylinder, saving costs and improving processing efficiency.

[0046] The specific steps of putting on the triangular needle using the present invention are as follows:

[0047] S1, the staff puts the needle body to be processed into the needle box 3 from the top, and the needle body at the bottom falls into the needle delivery groove 401 at the top of the needle ring 4 through the needle drop port 301 and the upper opening 501 of the needle delivery seat 5;

[0048] S2, the needle feeding motor 6 is started, driving the needle ring 4 to rotate, and the needle bodies in the needle box 3 fall into other corresponding needle feeding slots 401 in sequence;

[0049] S3, when the needle feeding slot 401 carrying the needle body rotates to the lowermost end, the needle body falls into the needle supporting slot through the lower opening 502 of the needle feeding seat 5, with one end of the needle body located in the fixed slot 801 and the other end located in the movable slot 901;

[0050] S4, the second motor 31 drives the movable seat 10 to drive the needle pusher 11 to move toward the side of the fixed needle frame 8, the needle body is inserted into the ejector hole 12, and the roller 13 is attached to the upper end surface of the movable needle frame 9. As the needle pusher 11 continues to translate, the roller 13 enters the sloped surface 902, thereby driving the movable needle 9 to move downward. At this time, the needle body is disengaged from the movable slot 901, and the needle pusher 11 pushes the needle body to move toward the side of the fixed needle frame 8;

[0051] S5, the needle clamping cylinder 23 works, pushing the corresponding pull rod 20, causing the movable part 1801 on the sleeve 18 to open, and at the same time the needle pusher 11 pushes the needle body into the needle clamping groove 1802 of the sleeve. After the needle body reaches the specified position, the second motor 31 reverses, the needle clamping cylinder 23 contracts, and the sleeve 18 contracts to clamp the needle body, thereby completing the needle insertion work.

[0052] In the present embodiment, the number of needle boxes, needle feeding mechanisms and needle support racks are all two, which can realize needle loading for two needle clamping mechanisms at the same time. After completion, the needle clamping cylinder is driven to move horizontally by the fifth cylinder, and needle loading can be realized for the other two needle clamping mechanisms again. The specific process will not be repeated here.

[0053] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A triangular needle electrical discharge machining needle device, characterized in that: The invention comprises a bottom plate and a support frame, the support frame is located on one side of the bottom plate, a needle box and a needle feeding mechanism are arranged on the support frame in sequence from top to bottom, a needle drop port is arranged at the bottom of the needle box, the needle feeding mechanism comprises a needle ring, a needle feeding seat and a needle feeding motor, the needle ring is a horizontally arranged cylindrical structure and is rotatably mounted on the needle feeding seat, the needle ring is connected to the needle feeding motor, and at least two needle feeding grooves parallel to its central axis are evenly distributed on its outer circumferential surface, a needle supporting frame is arranged at the upper end of the bottom plate, a needle supporting groove is arranged at the upper end of the needle supporting frame, the needle supporting groove is located directly below the needle ring, a needle pushing device matching with the needle supporting frame is arranged on one side of the needle supporting frame, the needle supporting frame comprises a fixed needle frame, a movable needle frame connected to the fixed needle frame for sliding up and down, and an elastic guide component, the elastic guide component is connected between the fixed needle frame and the movable needle frame, the needle supporting groove is composed of a fixed card slot arranged at the top of the fixed needle frame and a movable card slot arranged at the top of the movable needle frame, and the top of the movable needle frame is provided with a sloped surface.

2. A triangular needle EDM needle loading device as claimed in claim 1, characterized in that: The support frame is slidably connected with a lifting frame, and is provided with a first driving device for driving the lifting frame to move up and down along the support frame. The needle box and the needle feeding mechanism are both installed on the lifting frame.

3. A triangular needle EDM needle loading device as claimed in claim 1, characterized in that: The needle pushing device includes a movable seat, a needle pushing member and a second driving device. One side of the movable seat is connected to the second driving device for driving it to slide horizontally along the bottom plate, and the other side is connected to the needle pushing member that cooperates with the needle support frame. The needle pushing member is provided with a pin hole and a roller at its lower end.

4. A triangular needle EDM needle loading device as claimed in claim 1, characterized in that: The elastic guide assembly includes a guide rod and a first spring. The guide rod is installed on the fixed needle frame. The movable needle frame is slidably connected to the guide rod. The first spring is sleeved on the guide rod and located between the fixed needle frame and the movable needle frame.

5. A triangular needle EDM needle loading device as claimed in claim 4, characterized in that: The fixed needle holder is an L-shaped structure composed of a support and a vertical plate vertically connected, the guide rod is vertically arranged on the support, the movable needle holder is sleeved on the guide rod, the vertical plate is provided with a support rod, and the support rod is cooperated and connected with a slide groove arranged on the movable needle holder.

6. A triangular needle EDM needle loading device as claimed in claim 1, characterized in that: The needle feeding seat is a hollow cylindrical structure matching the needle ring, with an upper opening corresponding to the needle drop opening at its upper end and a lower opening for the needle body to drop down at its lower end.

7. A triangular needle EDM needle loading device as claimed in claim 1, characterized in that: A base is provided below the support frame, a substrate and a third driving device for driving the substrate to slide horizontally are slidably connected to the base, the support frame is mounted on the substrate, the bottom plate is slidably connected to the upper end of the substrate, and a fourth driving device for driving the bottom plate to slide horizontally is provided on the substrate.

8. A triangular needle EDM needle loading device as claimed in claim 1, characterized in that: The needle upper device also includes a needle clamping mechanism, which includes a jacket and a sleeve arranged outside the jacket, one end of the jacket is a conical structure composed of at least two movable parts with a needle clamping groove in the middle and expanding outward, and a groove is provided between each two adjacent movable parts. The sleeve is a hollow structure with openings at both ends, and the inner wall of one end is provided with an inner conical surface matching the conical structure, and the other end is provided with a control component for controlling the expansion and contraction of the conical structure.

9. A triangular needle electrical discharge machining needle loading device as claimed in claim 8, characterized in that: The control assembly includes a pull rod, a second spring, a baffle and a clamping needle cylinder, one end of the pull rod is connected to the clamping sleeve, and the other end passes through the sleeve and is connected to the baffle. The pull rod is sleeved with a second spring, and the second spring is located between the baffle and the end of the sleeve away from the conical structure. One end of the pull rod passes through the baffle and is connected to the output shaft of the clamping needle cylinder.

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