A propellant device

Abstract

The utility model provides a kind of material ejecting device, it is related to lathe equipment technical field, the utility model includes outer cover, inner cover being connected to the outer cover and the material ejecting head being slidably arranged in the inner cover, the end of the inner cover is equipped with multiple chucks, the chuck can automatically clamp or loosen the material ejecting head;The outer cover is also provided with elastic member, the elastic member is used to drive the material ejecting head to automatically eject parts after the chuck loosens the material ejecting head, compared with prior art, the utility model has the advantages of simple structure, reliable action, stable operation, and can effectively realize the automatic pushing and unloading of inner part of auxiliary shaft chuck.

Description

Technical Field

[0001] This utility model relates to the field of machine tool equipment technology, and in particular to a feed device. Background Technology

[0002] Swiss-type lathes are CNC lathes widely used for machining precision shafts and small parts. Their structural feature is a fixed tool and a moving workpiece, enabling efficient and continuous machining. Swiss-type lathes are typically equipped with a main spindle and a counterspindle for step-by-step machining of different processes, thereby improving machining efficiency and accuracy. In mass production automation, parts can be processed from blank to finished product in a single operation within the Swiss-type lathe. However, after the counterspindle completes machining, efficiently and stably removing the part from the chuck and ensuring automatic collection becomes a crucial link in the production chain.

[0003] In existing technologies, most Swiss-type lathes use a cylinder mounted at the rear end of the spindle to drive a spring rod inside the spindle, ejecting the machined parts from the chuck. While this method enables automatic unloading, it requires additional pneumatic and electrical control devices, increasing equipment costs and the workload for maintenance and management. Furthermore, pneumatic control is prone to delays or malfunctions during continuous high-frequency operations, affecting production cycle time. Utility Model Content

[0004] The purpose of this application is to provide a feed device to solve the aforementioned technical problems existing in the prior art.

[0005] This application provides a feed device, which adopts the following technical solution:

[0006] A spring ejector device includes an outer sleeve, an inner sleeve inserted into the outer sleeve, and a spring ejector head slidably disposed within the inner sleeve. The end of the inner sleeve is provided with a plurality of clamps, which are capable of automatically clamping or releasing the spring ejector head. An elastic element is also provided inside the outer sleeve, which is used to drive the spring ejector head to automatically eject a part after the clamps release the spring ejector head.

[0007] Preferably, the end of the inner sleeve is provided with a plurality of deformation slots along the circumferential direction, and the clamps are formed between adjacent deformation slots, and the inner sidewalls of the clamps are recessed inward.

[0008] Preferably, a first magnetic element is embedded on the outer side wall of each clamp, and a second magnetic element is embedded on the inner wall of the outer sleeve near the clamp. The first magnetic element and the second magnetic element can attract or repel each other to drive the clamp to contract or open radially, thereby realizing the automatic clamping or releasing of the spring head.

[0009] Preferably, at least one of the clamps has a sliding groove in the radial direction, and a plug rod is slidably disposed in the sliding groove. The plug rod can move under the attraction or repulsion of the second magnetic component. The outer peripheral wall of the spring head is provided with a slot for inserting the plug rod. When the part enters and is positioned in the inner sleeve, the plug rod can be automatically inserted into the slot.

[0010] Preferably, a reset member is provided in the sliding groove, the reset member being used to drive the plug rod to remain extended out of the inner wall of the clamp.

[0011] Preferably, the outer wall of the chuck is provided with an inclined portion, which gradually thickens in the radial direction toward the side where the part enters the inner sleeve, and the end of the outer sleeve is provided with a flared inclined surface toward the axis, with the flared inclined surface and the inclined portion being spaced apart.

[0012] Preferably, a bushing is inserted and installed at the tail end of the outer jacket, and a spring rod is slidably disposed inside the bushing. The spring rod is detachably connected to the spring head.

[0013] Preferably, the bushing is threaded to a threaded sleeve at its tail end, the spring rod slides through the threaded sleeve, the elastic element includes a spring, the spring is disposed inside the bushing, the spring rod is provided with a convex ring, one end of the spring is connected to the convex ring, and the other end is connected to the threaded sleeve.

[0014] Preferably, the bushing has a retaining edge, the outer sleeve has a tapered edge at its tail end, the retaining edge is engaged with the tapered edge, the outer sleeve has an adjusting ring inside, one end of the adjusting ring abuts against the retaining edge, and the other end abuts against the inner sleeve, the inner wall of the outer sleeve has a first threaded portion, and the inner sleeve has a second threaded portion, the first threaded portion and the second threaded portion being threadedly connected to each other.

[0015] Preferably, the plug rod is provided with a guide slope on the side facing the part entering the inner sleeve.

[0016] This utility model has the following advantages and beneficial effects:

[0017] (1) By setting an elastic element inside the outer sleeve, this utility model can automatically push the spring head out of the part by using the elastic restoring force after the chuck releases the spring head, thereby realizing the automatic pushing and unloading of the part in the secondary shaft chuck. This avoids relying on external air source or electric control drive, making the structure simpler, the operation more reliable, reducing the failure rate, and helping to improve the continuity and stability of mass automated production of the Swiss-type lathe, meeting the demand for efficient and stable unloading. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram illustrating the overall structure of a feed device.

[0020] Figure 2 This is a schematic diagram intended to illustrate the internal structure of a feed device.

[0021] Figure 3 yes Figure 2 Enlarged view of section A.

[0022] Figure 4 It is a schematic diagram designed to show the state of the part after it enters the inner sleeve and is held and fixed by the chuck, the spring head retracts, and the plug rod is inserted into the slot.

[0023] Figure 5 It is an exploded view designed to show the inner sleeve, the connector rod, and the adjusting ring.

[0024] Figure 6 It is a structural diagram intended to show the feed head, feed rod, and bushing.

[0025] The diagram is marked as follows:

[0026] 100. Outer sleeve; 110. Elastic element; 120. Second magnetic element; 130. Flared bevel; 140. Narrowing edge; 150. First threaded part; 200. Inner sleeve; 210. Clamp; 220. Expansion joint; 221. Expansion groove; 230. First magnetic element; 240. Sliding groove; 241. Insert rod; 2411. Guide bevel; 242. Reset element; 250. Inclined part; 260. Second threaded part; 300. Spring head; 310. Slot; 400. Bushing; 410. Spring rod; 411. Convex ring; 420. Threaded sleeve; 430. Slip edge; 500. Adjusting ring; 600. Part. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] The following is combined Figures 1-6 The present application provides a detailed description of a feed device through specific embodiments and application scenarios.

[0029] A spring-load device includes an outer sleeve 100, an inner sleeve 200 inserted into the outer sleeve 100, and a spring head 300 slidably disposed within the inner sleeve 200. The end of the inner sleeve 200 is provided with a plurality of clamps 210, which can automatically clamp or release the spring head 300. An elastic element 110 is also installed inside the outer sleeve 100. The elastic element 110 is used to drive the spring head 300 to automatically eject the part 600 after the clamps 210 release the spring head 300.

[0030] In practical use, this feed spring device is installed on the secondary shaft of the Swiss-type lathe. It is typically reliably connected to the secondary shaft body via a flange, locating pin, or step to ensure good coaxiality and operational stability even under high-speed operation and repeated reciprocating motions. During operation, after the main shaft of the Swiss-type lathe completes the initial machining of part 600, the secondary shaft (equipped with this feed spring device) feeds axially until the feed spring head 300 contacts the end face of part 600. At this time, under the axial thrust of part 600, the feed spring head 300 is pressed into the inner sleeve 200 to overcome the preload of the elastic element 110, causing the chuck 210 to retract radially and automatically clamp part 600, achieving reliable secondary positioning of part 600.

[0031] During subsequent machining, the chuck 210 clamps the part 600 and performs synchronous rotation and feed / retraction operations to ensure that the tail end of the part 600 can be precisely machined. After machining is completed, the sub-spindle retracts to the preset spring position, and at the same time, the control system or magnetic mechanism causes the chuck 210 to release its radial clamping of the spring head 300. The elastic element 110 instantly returns to its elastic state, quickly pushing the spring head 300 outward, thereby causing the machined part 600 to automatically disengage from the clamp and pop out into the part 600 collection box or conveyor slot below, ensuring efficient connection of subsequent processes.

[0032] Furthermore, the aforementioned structure of the feed device can accommodate parts 600 of different diameters and lengths. Specifications can be quickly switched by changing the inner sleeve 200, chuck 210, or adjusting the stiffness of the elastic element 110, further improving the efficiency of mass automated processing of the Swiss-type lathe. Compared to traditional methods relying on additional cylinders or mechanical push rods, this solution has a more compact structure, reducing the installation space and maintenance costs required for external components such as air pipes and solenoid valves. It also avoids feeding failures caused by unstable air sources or oil blockages, thus significantly improving the stability of the entire machine's operation and the consistency of production rhythm.

[0033] In practical applications, the spring head 300 can also be made of different materials such as hard alloy, stainless steel, ceramic coating to meet the requirements of high speed and different workpiece hardness. The elastic element 110 can be replaced with a disc spring, wave spring or rubber block and other equivalent components to adapt to different pushing force, reset speed and fatigue life requirements, so as to ensure that the spring device can maintain good action consistency and durability in long-term high-frequency operation.

[0034] Reference Figure 5 As shown, the inner sleeve 200 has multiple deformation slots 220 circumferentially arranged at its end. These slots are uniformly distributed circumferentially, allowing adjacent clamps 210 to contract or expand synchronously in the radial direction with approximately the same amplitude when under stress. This prevents excessive deformation in a single direction, ensuring a uniform circumferential clamping force on the part 600 and the spring head 300, further improving machining accuracy and coaxial stability. The bottom wall of the deformation slot 220 is preferably machined with a circular expansion groove 221. Compared to ordinary straight grooves, this expansion groove 221 provides more elastic deformation during deformation, significantly enhancing the radial elasticity and deformability of the clamp 210.

[0035] It should be noted that the diameter of the spring head 300 can be designed to be smaller than the inner diameter of the multiple clamps 210 in the inner sleeve 200 in their natural state. This ensures that when the part 600 is clamped and fixed by the multiple clamps 210, the spring head 300 will not be directly clamped by the clamps 210 or experience excessive interference. This effectively avoids the limitation of only being able to clamp parts 600 with the same or similar diameter as the spring head 300, significantly improving the adaptability of the spring feeding device to parts of different specifications or wall thicknesses.

[0036] Meanwhile, since the spring head 300 is in a "gap" state during clamping, meaning the chuck 210 primarily clamps the part 600 directly rather than the spring head 300, unnecessary radial indentations and localized wear on the spring head 300 can be reduced when the chuck 210 is released, thus helping to extend the service life of the spring head 300. Furthermore, this design prevents the chuck 210 from imposing additional constraints on the spring head 300, thus preventing it from smoothly sliding and ejecting during subsequent operation driven by the elastic element. This ensures that the part 600 can be reliably and smoothly ejected and unloaded by the spring head 300 after processing.

[0037] Preferably, in order to accommodate more parts 600 with a wide range of diameter variations, the retraction stroke and clamping surface profile of the chuck 210 can be appropriately adjusted so that it can achieve a more consistent and uniform clamping effect on parts 600 with different diameters, while maintaining clearance space for the spring head 300, thereby further improving the versatility and processing flexibility of the spring device.

[0038] Furthermore, the expansion groove 221 can be manufactured using various precision processes, such as mechanical cutting, CNC milling, or electrical discharge machining to process the groove bottom. This not only facilitates standardized production but also helps maintain consistency and interchangeability in mass automated machining. For some high-load or frequently cyclic applications, high-speed hard-tool micro-milling or ultrasonic-assisted machining can be used to further improve the surface quality of the groove bottom, reduce the initiation point of micro-cracks, and extend fatigue life.

[0039] Preferably, the walls between adjacent expansion joints 220 together form a chuck 210. The main body of the chuck 210 can be designed with an inwardly tapering profile, making its overall thickness relatively large. This provides higher structural rigidity and clamping strength when clamping the spring head 300, ensuring sufficient load-bearing capacity and resistance to deformation during processing. At the same time, the wall thickness of the deformation area of ​​the chuck 210, i.e., the area near the expansion groove 221, can be relatively thinned. This localized thinning design allows the chuck 210 to more easily undergo elastic deformation in the radial direction when subjected to magnetic or mechanical forces, which is beneficial for achieving rapid and uniform opening and closing actions.

[0040] This wall thickness arrangement not only effectively balances the rigidity of the chuck 210 during clamping and its elasticity during release, but also reduces material fatigue and microcrack accumulation caused by repeated contraction and opening, thereby extending the service life of the chuck 210 during long-term operation. This structure also facilitates the rapid return of the chuck 210 to its initial shape after being released by external force, reducing the decrease in clamping accuracy caused by residual deformation and ensuring stable concentricity and repeatability in subsequent clamping operations.

[0041] The specific width and depth of the expansion joint 220, as well as the diameter and depth of the expansion groove 221, can be flexibly designed and adjusted according to the outer diameter, material, and required clamping force of different spring heads 300. For larger spring heads 300, the diameter and depth of the expansion groove 221 can be appropriately increased to obtain a larger radial deformation space; for harder materials, the groove depth can be appropriately reduced to avoid excessive deformation of the chuck 210 leading to failure. In this way, through customized structural dimensions, the radial elastic performance of the chuck 210 can be better matched with the specifications of different parts 600, improving the overall applicability of the device.

[0042] Furthermore, to facilitate future maintenance or replacement, the inner sleeve 200 can adopt a modular design, either entirely or partially. Different specifications of the inner sleeve 200 can maintain uniformity through their outer circumferential dimensions. By simply replacing the end sections with different expansion joints 220 and chuck 210 structures, it can be adapted to different series of spring heads 300, enabling rapid maintenance and replacement and reducing downtime. This design scheme, while ensuring sufficient deformation capacity of the chuck 210, also optimizes multiple requirements for production processing, operational durability, and subsequent maintenance, enhancing the full life-cycle value of the spring feeding device.

[0043] In other embodiments, the chuck 210 can be a single clamping element similar to a three-jaw chuck, with the jaws evenly distributed at the ends of the inner sleeve 200. These jaws are synchronously contracted or opened radially via a central drive mechanism to clamp or release the spring head 300. Such jaws can employ a dovetail slider or guide rail configuration to ensure that the three jaws move synchronously and equidistantly under drive, guaranteeing both uniform clamping force distribution and maintaining the coaxiality of the spring head 300.

[0044] Preferred, refer to Figure 2 and Figure 3 As shown, a first magnetic element 230 is embedded on the outer wall of each chuck 210, and a second magnetic element 120 is correspondingly embedded on the inner wall of the outer sleeve 100 near the chuck 210. The first magnetic element 230 and the second magnetic element 120 can attract or repel each other through magnetic force to drive the chuck 210 to contract or open in the radial direction, thereby automatically clamping or releasing the spring head 300. This allows the clamping or releasing action to be automatically completed when the spring head 300 is pushed in or out of the part 600, simplifying the overall transmission mechanism. Specifically, the first magnetic element 230 can be a metal sheet, a permanent magnet, or an electromagnet; the second magnetic element 120 can be an electromagnet ring or a ring structure formed by multiple small electromagnets evenly arranged in the circumference, and is set one-to-one with the first magnetic element 230. To further adapt to different automation control requirements, both the first magnetic component 230 and the second magnetic component 120 can be in the form of electromagnets. By adjusting the direction and magnitude of the current, the magnitude and direction of the magnetic force can be precisely controlled, thereby achieving a smoother and more adjustable clamping and releasing effect. Since the circuit connection and control method of the electromagnet are existing technologies, they will not be described in detail here.

[0045] As an optional embodiment, refer to Figure 3 and Figure 5As shown, at least one chuck 210 has a sliding groove 240 in the radial direction. The specific number can be customized according to different specifications or different clamping force requirements. For example, sliding grooves 240 can be opened only on two symmetrical chucks 210, or they can be evenly opened on multiple chucks 210 to enhance uniform clamping performance. The cross-sectional shape of the sliding groove 240 can be selected as a square groove, a circular groove, or an elliptical groove according to the processing technology and force requirements, so as to better adapt to the sliding guide of the plug-in rod 241 and ensure its smooth and stable movement. The plug-in rod 241 is slidably installed in the sliding groove 240. An appropriate micro gap can be left between the end of the plug-in rod 241 and the inner wall of the sliding groove 240 to reduce friction and ensure a certain guiding accuracy, and facilitate insertion into the slot 310.

[0046] Preferably, the insertion rod 241 can be made entirely of magnetic material, such as alloy steel, iron-cobalt-nickel, etc., or it can have magnetic material embedded on its outer surface or end, or have metal inserts that can be attracted or repelled by an electromagnet. This allows it to be precisely driven to reciprocate along the sliding groove 240 under the attraction or repulsion of the second magnetic component 120. When the part 600 enters and pushes into the spring head 300, pressing the spring head 300 into the inner sleeve 200 to a preset depth, the preset slot 310 on the outer peripheral wall of the spring head 300 can be aligned with the insertion rod 241. Under the action of magnetic force, the insertion rod 241 quickly inserts into the slot 310, realizing the repositioning and locking of the spring head 300 under multi-point support.

[0047] It is worth noting that, since the spring feed device usually rotates at high speed along with the secondary shaft, the insertion rod 241 is easily subjected to significant centrifugal force during operation, and may tend to be thrown off radially. Therefore, after the insertion rod 241 is inserted into the slot 310, under the continuous action of magnetic force, it not only plays a normal axial anti-disengagement function, but also effectively overcomes the radial offset caused by centrifugal force, ensuring that the spring feed head 300 maintains reliable coaxial positioning throughout the entire rotary machining stage, preventing the spring feed head 300 from being ejected under the action of the elastic element 110, improving the stability of the device, avoiding slight shaking or eccentric machining problems caused by relying solely on the clamp 210 for clamping, and further improving the consistency of machining dimensions and surface quality.

[0048] Simultaneously, when the chuck 210 releases due to a change in magnetic field controlled by the current direction of the second magnetic element 120, the insertion rod 241 can actively exit the slot 310 under the combined action of the reset element 242 (such as a spring or spring sheet) and the second magnetic element 120, achieving rapid unlocking. This allows the spring head 300 to automatically eject the processed part 600 under the drive of the elastic element 110, ensuring smooth and unobstructed unloading. This design not only improves the reliability of automation through the synergistic effect of magnetic control and mechanical reset.

[0049] Preferably, to ensure that the insertion rod 241 can smoothly enter the slot 310 during the insertion of the spring head 300 by the part 600, a guide slope 2411 is provided on the side of the insertion rod 241 facing the part 600 entering the inner sleeve 200. Thus, as the spring head 300 is gradually pushed into the inner sleeve 200 along with the part 600, the insertion rod 241 can automatically rise or shift into the slot 310 under the guidance of the guide slope 2411, reducing initial jamming and the impact on the accuracy of the part 600.

[0050] Furthermore, the sliding groove 240 preferably contains a reset element 242, which is used to actively push the plug rod 241 back to its initial extended state when it is not magnetically attracted or repelled. The reset element 242 can be in the form of a spring, a spring sheet, or the like. To better fix and guide the reset element 242, the sliding groove 240 can be designed as a stepped structure, with one end of the spring fixed in the groove of the step and the other end connected to the plug rod 241. This provides effective reset force and also acts as an axial limit for the reset element 242, preventing bounce caused by high-speed rotation or inertia.

[0051] Furthermore, the outer wall of the chuck 210 is preferably provided with an inclined portion 250, which gradually thickens in the radial direction toward the side of the part 600 entering the inner sleeve 200. The end of the outer sleeve 100 is provided with a flared inclined surface 130 facing the axis, and is provided with a certain gap from the inclined portion 250. This structure can provide reasonable deformation space for the chuck 210 when it opens or closes. At the same time, the cooperation between the inclined portion 250 and the flared inclined surface 130 can make the first magnetic component 230 and the second magnetic component 120 more uniformly stressed during radial force application, which helps to reduce the energy consumption required for the magnetic drive of the chuck 210 to deform, and realize labor-saving operation. This design can also disperse stress during long-term use and extend the service life of the chuck 210 and the inner sleeve 200 as a whole.

[0052] As an optional embodiment, refer to Figure 4 and Figure 6 As shown, a bushing 400 is inserted into the tail end of the outer sleeve 100. The bushing 400 needs to be inserted from the front end of the outer sleeve 100. A spring rod 410 is slidably installed inside the bushing 400. The spring rod 410 is detachably connected to the spring head 300. The connection method can be a threaded connection, a snap-fit ​​connection, or a pin locking, etc., to facilitate later maintenance or quick replacement of spring rods 410 of different lengths.

[0053] Preferably, the elastic element 110 is a spring and is installed inside the bushing 400. To facilitate the installation of the spring, a threaded sleeve 420 is threadedly connected to the tail end of the bushing 400. The end of the threaded sleeve 420 can be designed with a snap-fit ​​surface or a hexagonal structure to facilitate tightening or loosening using tools such as wrenches. The spring rod 410 can slide through the threaded sleeve 420, and a raised ring 411 is integrally formed on its outer circumference. One end of the spring mates with the raised ring 411, and the other end is connected to the threaded sleeve 420. This structure can effectively realize the spring's reset preload on the spring rod 410, ensuring that the spring head 300 and part 600 can be ejected in time when the chuck 210 is released.

[0054] Preferably, refer to Figure 2 As shown, to further improve assembly accuracy and multi-specification compatibility, a retaining edge 430 can be integrally formed on the bushing 400, and a tapered edge 140 is provided at the tail end of the outer sleeve 100. The retaining edge 430 can be engaged within the tapered edge 140 for quick positioning. An adjusting ring 500 is installed inside the outer sleeve 100. One end of the adjusting ring 500 abuts against the retaining edge 430, and the other end abuts against the inner sleeve 200, thereby limiting the axial position of the inner sleeve 200. To facilitate fine-tuning, the inner wall of the outer sleeve 100 may be provided with a first threaded portion 150, and the outer periphery of the inner sleeve 200 may be provided with a second threaded portion 260. Through the threaded engagement of the first threaded portion 150 and the second threaded portion 260, the inner sleeve 200 can be firmly fixed inside the outer sleeve 100. Furthermore, after replacing the adjusting ring 500 of different lengths, the installation depth of the inner sleeve 200 can be precisely adjusted, and the gap between the flared bevel 130 and the inclined portion 250 can be further adjusted to optimize the radial deformation stroke of the chuck 210, thereby adapting to the different lengths and clamping requirements of the parts 600.

[0055] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A feed assembly device, characterized in that, The device includes an outer sleeve (100), an inner sleeve (200) inserted into the outer sleeve (100), and a spring head (300) slidably disposed in the inner sleeve (200). The end of the inner sleeve (200) is provided with multiple clamps (210), which can automatically clamp or release the spring head (300). The outer sleeve (100) is also provided with an elastic element (110), which is used to drive the spring head (300) to automatically eject the part (600) after the clamps (210) release the spring head (300).

2. The ammunition feeding device according to claim 1, characterized in that, The end of the inner sleeve (200) is provided with a plurality of deformation slots (220) along the circumferential direction, and the clamp (210) is formed between adjacent deformation slots (220), and the inner sidewall of the clamp (210) is recessed inward.

3. The ammunition feeding device according to claim 1, characterized in that, Each of the clamps (210) has a first magnetic element (230) embedded on its outer side wall, and a second magnetic element (120) is embedded on the inner side of the outer sleeve (100) near the clamp (210). The first magnetic element (230) and the second magnetic element (120) can attract or repel each other to drive the clamp (210) to contract or open radially, thereby realizing the automatic clamping or releasing of the spring head (300).

4. The ammunition feeding device according to claim 3, characterized in that, At least one of the clamps (210) has a sliding groove (240) in the radial direction. A plug rod (241) is slidably disposed in the sliding groove (240). The plug rod (241) can move under the attraction or repulsion of the second magnetic component (120). The outer peripheral wall of the spring head (300) is provided with a slot (310) for inserting the plug rod (241). When the part (600) enters and is positioned in the inner sleeve (200), the plug rod (241) can be automatically inserted into the slot (310).

5. The ammunition feeding device according to claim 4, characterized in that, A reset member (242) is provided in the sliding groove (240), and the reset member (242) is used to drive the plug rod (241) to remain extended from the inner wall of the clamp (210).

6. The ammunition feeding device according to claim 4, characterized in that, The outer wall of the chuck (210) is provided with an inclined portion (250), which gradually thickens in the radial direction toward the side of the part (600) entering the inner sleeve (200). The end of the outer sleeve (100) is provided with a flared inclined surface (130) toward the axial direction, and the flared inclined surface (130) and the inclined portion (250) are spaced apart.

7. The ammunition feeding device according to claim 1, characterized in that, A bushing (400) is inserted into the tail end of the outer jacket (100), and a spring rod (410) is slidably disposed inside the bushing (400). The spring rod (410) is detachably connected to the spring head (300).

8. The ammunition feeding device according to claim 7, characterized in that, The bushing (400) is threaded to a threaded sleeve (420) at its tail end. The spring rod (410) slides through the threaded sleeve (420). The elastic element (110) includes a spring, which is disposed inside the bushing (400). The spring rod (410) is provided with a protruding ring (411). One end of the spring is connected to the protruding ring (411), and the other end is connected to the threaded sleeve (420).

9. The ammunition feeding device according to claim 7, characterized in that, The bushing (400) is provided with a retaining edge (430), and the tail end of the outer sleeve (100) has a tapered edge (140). The retaining edge (430) is engaged with the tapered edge (140). An adjusting ring (500) is provided inside the outer sleeve (100). One end of the adjusting ring (500) abuts against the retaining edge (430), and the other end abuts against the inner sleeve (200). The inner wall of the outer sleeve (100) is provided with a first threaded portion (150), and the inner sleeve (200) is provided with a second threaded portion (260). The first threaded portion (150) and the second threaded portion (260) are threadedly connected to each other.

10. The ammunition feeding device according to claim 4, characterized in that, The plug rod (241) is provided with a guide slope (2411) on the side facing the part (600) into the inner sleeve (200).

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