Feeding mechanism of shot blasting machine

Abstract

The utility model discloses a feeding mechanism of a shot blasting machine, and belongs to the technical field of casting machining. Comprising a hanging bracket, a straight rail, a first bifurcated rail, a second bifurcated rail, a first butt-joint rail, a second butt-joint rail and a butt-joint rail driving assembly. A first bifurcated rail and a second bifurcated rail are respectively arranged below the hanging bracket; straight rails are arranged on the rear sides of the first bifurcated rail and the second bifurcated rail; a butt joint rail driving assembly is movably arranged on the hanging bracket between the straight rail and the first bifurcated rail as well as the second bifurcated rail; a first butt-joint rail and a second butt-joint rail are arranged below the butt-joint rail driving assembly. The first butt-joint rail and the second butt-joint rail are driven by the butt-joint rail driving assembly to move left and right, and the straight rail is in seamless butt joint with the first bifurcated rail or the second bifurcated rail. Discharging and feeding on the two forked rails are mutually circulated and reciprocated; and the shot blasting machine is always in an operation state, so that the shot blasting machine is prevented from being idle for a long time, and the shot blasting treatment efficiency of castings is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of casting processing technology, specifically relating to a shot blasting machine feeding mechanism. Background Technology

[0002] A shot blasting machine is a device that uses high-speed shot blasting to clean or strengthen the surface of castings. Shot blasting machines can simultaneously remove sand, cores, and clean castings; they are effective at removing burrs, diaphragms, and rust from casting surfaces. Typically, the feeding of a shot blasting machine is accomplished by a suspension structure and a track structure. The suspension structure is movably mounted on the track, and a mechanism for placing the casting to be processed is located below the suspension structure. The suspension structure slides on the track, thus feeding the casting into the shot blasting machine or removing the shot-blasted casting from the machine.

[0003] Typically, a shot blasting machine has only one track above it, on which only one set of suspension structures can run. A batch of castings is fed into the shot blasting machine, processed, and then removed. The processed castings are then unloaded, and a new batch of castings to be processed is placed on top, and then fed into the shot blasting machine again. During the entire process from the removal of the previous batch of processed castings to the feeding of the next batch of castings, the shot blasting machine is idle. Therefore, this single-track feeding mechanism delays the production and processing efficiency. Utility Model Content

[0004] This utility model provides a shot blasting machine feeding mechanism, which adopts a herringbone bifurcated track design. The two bifurcated tracks are connected to the main straight track through the docking track. After one bifurcated track finishes discharging material, the docking track immediately connects the other bifurcated track to the straight track, and a new batch of raw materials is immediately and seamlessly fed into the shot blasting machine. The discharging and feeding on the two bifurcated tracks are mutually cyclical, keeping the shot blasting machine in a constant state of operation, avoiding long periods of idleness, and greatly improving the efficiency of shot blasting of castings.

[0005] To achieve the above-mentioned technical objectives, this utility model provides a shot blasting machine feeding mechanism, including: a hanger, a straight rail, a first branch rail, a second branch rail, a first docking rail, a second docking rail, and a docking rail drive assembly.

[0006] A first branch rail and a second branch rail are respectively installed below the hanger;

[0007] A straight rail is provided on the rear side of the first and second branch rails;

[0008] A docking rail drive assembly is movably installed on the hanger between the straight rail and the first and second branch rails;

[0009] A first docking rail and a second docking rail are respectively provided below the docking rail drive assembly;

[0010] The first and second docking rails move left and right under the drive of the docking rail drive assembly, connecting the straight rail to the first or second branch rail respectively.

[0011] Preferably, the straight rail, the first branch rail, the second branch rail, the first docking rail, and the second docking rail all have the same track width, height, and track groove depth.

[0012] The straight rail, the first branch rail, the second branch rail, the first connecting rail, and the second connecting rail are all configured as "I"-shaped steel rail structures.

[0013] Preferably, the docking rail drive assembly includes: a sliding crossbeam for the moving plate, a moving plate for the docking rail, and a hydraulic push-pull rod;

[0014] Two sliding crossbeams for the movable plate are provided, both of which are mounted on the hanger;

[0015] A docking rail moving plate is movably disposed between the two sliding crossbeams of the moving plates; the two sides of the docking rail moving plate are respectively movably disposed on the two sliding crossbeams of the moving plates; the docking rail moving plate can move left and right relative to the two sliding crossbeams of the moving plates.

[0016] The bottom surface of the docking rail moving plate is respectively provided with a first docking rail and a second docking rail;

[0017] A hydraulic push-pull rod is provided on one side of the hanger; the telescopic end of the hydraulic push-pull rod is located on the upper surface of the docking rail moving plate; under the telescopic action of the hydraulic push-pull rod, the docking rail moving plate can move back and forth.

[0018] Preferably, sliding slots are provided on the opposite surfaces of the two sliding beams of the movable plate;

[0019] The contact sides of the docking rail moving plate and the two moving plate sliding beams are provided with transverse protrusions.

[0020] The protrusions on both sides are respectively movably embedded into the sliding slots opened on the two sliding beams of the moving plate; thereby enabling the docking rail moving plate to move left and right relative to the two sliding beams of the moving plate.

[0021] Preferably, a push-pull vertical plate is vertically provided on the upper surface of the docking rail moving plate;

[0022] The telescopic end of the hydraulic push-pull rod is located on the push-pull vertical plate.

[0023] Preferably, the tail end of the hydraulic push-pull rod is fixedly mounted on the side above the hanger by a diagonal brace and a support seat.

[0024] Preferably, a patch pressure sensor is provided near the front end of the first branch rail and the second branch rail, and at the bottom of one side of the track groove.

[0025] The patch pressure sensor is communicatively connected to the PLC; the PLC's instruction output port is communicatively connected to the limit drive assembly.

[0026] The limit drive assembly is used to restrict the sliding movement of the sliding structure on the track.

[0027] Preferably, the limiting drive assembly includes: an electromagnet, a limiting post, and an elastic element;

[0028] A groove is provided near the front end of the first and second branch rails and on the bottom surface of the first and second branch rails.

[0029] The insertion slot is equipped with a movable limiting post;

[0030] An electromagnet is installed on the top surface of the insertion slot; the control component of the electromagnet is communicatively connected to the PLC.

[0031] The upper end of the elastic element is provided on the upper top surface inside the groove;

[0032] The lower end of the elastic element is disposed on the annular protrusion on the side wall of the limiting post.

[0033] When the electromagnet is energized, it attracts the magnetic metal retaining post upwards, causing the retaining post to move upwards and fully enter the insertion groove, compressing the elastic element. When the electromagnet is de-energized, the magnetism disappears, and the retaining post extends out of the insertion groove under the downward elastic force of the elastic element.

[0034] Preferably, two symmetrical sliding grooves are formed on the inner wall of the insertion groove;

[0035] Embedded blocks are symmetrically arranged on both sides of the annular convex ring;

[0036] The embedding block is movably embedded within the groove;

[0037] The embedded block can move up and down relative to the slide.

[0038] The beneficial effects of this utility model are:

[0039] This utility model provides a shot blasting machine feeding mechanism, in which the feeding track is set as a "V"-shaped bifurcated track; each bifurcated track is equipped with a set of suspension mechanisms, and the sliding structure of the suspension mechanisms is set on the track; the two bifurcated tracks are seamlessly connected to the straight track through corresponding two docking rails; the docking rails can move left and right; by adopting the bifurcated track structure of this utility model, seamless connection between the discharge and feeding of the shot blasting machine can be realized, so that the shot blasting machine is in a continuous processing process for castings, improving the efficiency of shot blasting of castings; and avoiding excessively long idle intervals of the shot blasting machine.

[0040] Patch pressure sensors are installed on the bottom surface of the track grooves of the two bifurcated rails near the front end. When the sliding structure moves to the patch pressure sensor, the patch pressure sensor collects the pressure signal and feeds it into the PLC. The PLC controls the electromagnet to de-energize, and the limit post on the bottom surface of the front end of the bifurcated rail pops out, which limits the movement of the sliding structure. This prevents the sliding structure from continuing to slide due to inertia after it stops sliding on its own, which may cause derailment. Attached Figure Description

[0041] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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.

[0042] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0043] Figure 2 This is a schematic diagram of the structure of the present invention, which removes the sliding crossbeams of the moving plate on both sides of the docking rail moving plate.

[0044] Figure 3 This is a schematic diagram of the hanger of this utility model and the two sliding crossbeams with movable plates installed on the hanger;

[0045] Figure 4 This is a schematic diagram of the main structure between the track and the docking track moving plate of this utility model;

[0046] Figure 5 This is a side view of the connection structure between the telescopic end of the hydraulic push-pull rod and the upper surface of the docking rail moving plate of this utility model.

[0047] Figure 6 This is a schematic diagram showing the positional and structural relationship between the hydraulic push-pull rod and the hanger of this utility model;

[0048] Figure 7 This is a schematic diagram of the structure of the bifurcated rail with a patch pressure sensor installed on the bottom surface of the track groove of the present invention.

[0049] Figure 8 This is a cross-sectional planar schematic diagram of the limiting post, electromagnet, insertion groove, and bifurcation rail of this utility model.

[0050] In the attached diagram, the structural names represented by each number are as follows:

[0051] 1-Hanger, 101-Sliding crossbeam of the moving plate, 1011-Sliding slot, 2-Straight rail, 3-First branch rail, 301-Rail groove, 4-Second branch rail, 5-First docking rail, 6-Second docking rail, 7-Docking rail moving plate, 701-Push-pull vertical plate, 702-Protruding strip, 8-Hydraulic push-pull rod, 9-Patch pressure sensor, 10-Limiting post, 1001-Insertion groove, 1002-Electromagnet, 1003-Elastic element, 1004-Slide groove, 1005-Annular protrusion, 1006-Embedded block. Detailed Implementation

[0052] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0053] Example 1

[0054] A shot blasting machine feeding mechanism includes: a hanger 1, a straight rail 2, a first branch rail 3, a second branch rail 4, a first docking rail 5, a second docking rail 6, and a docking rail drive assembly.

[0055] The hanger 1 is installed above the shot blasting machine. The hanger 1 and its track are supported by support steel to the shot blasting machine or directly to the ground.

[0056] like Figure 1As shown, a first branch rail 3 and a second branch rail 4 are fixedly connected to the lower surface of the hanger 1 by welding. Both branch rails are arc-shaped and mirror-symmetrical. A straight rail 2 is set behind the first branch rail 3 and the second branch rail 4, and in the middle of the two branch rails. Similarly, the straight rail 2 is also fixedly connected to the lower surface of the hanger 1 by welding. A docking rail drive assembly is movably set on the hanger 1 between the two branch rails and the straight rail 2. The lower surface of the docking rail drive assembly is respectively provided with a first docking rail 5 and a second docking rail 6. The lower surfaces of the first branch rail 3, the second branch rail 4, the straight rail 2, the first docking rail 5, and the second docking rail 6 are all on the same horizontal plane. The width, height, and depth of the rail groove 301 of each section of the rail are all the same. And all of them adopt the "I"-shaped steel rail structure.

[0057] Driven by the docking rail drive assembly, the first docking rail 5 and the second docking rail 6 will move back and forth on the left and right movement trajectory, so that the first docking rail 5 can connect the straight rail 2 with the first branch rail 3 or the second docking rail 6 can connect the straight rail 2 with the second branch rail 4 to form a through rail channel.

[0058] like Figure 4 As shown, the above-mentioned docking rail drive assembly includes: a sliding crossbeam 101, a docking rail sliding plate 7, and a hydraulic push-pull rod 8.

[0059] like Figure 3 As shown, two sliding crossbeams 101 are provided for the movable plate, both of which are mounted on the hanger 1;

[0060] A docking rail moving plate 7 is movably installed between two sliding crossbeams 101; the two sides of the docking rail moving plate 7 are respectively movably installed on the two sliding crossbeams 101; the docking rail moving plate 7 can move left and right relative to the two sliding crossbeams 101; the specific connection structure between the two sides of the docking rail moving plate 7 and the two sliding crossbeams 101 is set as follows:

[0061] Sliding slots 1011 are provided on the opposite surfaces of the two sliding beams 101; convex strips 702 are provided laterally on the contact sides of the connecting rail moving plate 7 and the two sliding beams 101; the convex strips 702 on both sides are respectively movably embedded into the sliding slots 1011 provided on the two sliding beams 101, the convex strips 702 can slide in the sliding slots 1011, and at the same time the cooperation between the convex strips 702 and the sliding slots 1011 can also play a supporting role for the connecting rail moving plate 7.

[0062] The bottom surface of the docking rail moving plate 7 is respectively provided with a first docking rail 5 and a second docking rail 6;

[0063] A hydraulic push-pull rod 8 is installed on one side above the hanger 1; the telescopic end of the hydraulic push-pull rod 8 is located on the upper surface of the connecting rail moving plate 7, such as... Figure 5 As shown, a push-pull vertical plate 701 is provided on the upper surface of the docking rail moving plate 7. The telescopic section of the hydraulic push-pull rod 8 is connected to the push-pull vertical plate 701, so that the hydraulic push-pull rod 8 has a driving effect on the docking rail moving plate 7. Under the telescopic action of the hydraulic push-pull rod 8, the docking rail moving plate 7 can move back and forth left and right, thereby synchronously driving the first docking rail 5 and the second docking rail 6 to move back and forth left and right. The hydraulic push-pull rod 8 is connected to a limit switch, which controls the extension length and retraction length of the hydraulic push-pull rod 8 to be fixed values ​​each time. In this way, when the hydraulic telescopic rod 8 extends a fixed length, it pushes the docking rail moving plate 7 to move left by a fixed distance, so that the two ends of the second docking rail 6 are respectively connected to the straight rail 2 and the second branch rail 4; conversely, when the hydraulic telescopic rod 8 retracts a fixed length, it drives the docking rail moving plate 7 to move right by a fixed distance, so that the two ends of the first docking rail 5 are respectively connected to the straight rail 2 and the first branch rail 3.

[0064] As a preferred embodiment, such as Figure 6 As shown, the tail end of the hydraulic push-pull rod 8 is fixedly connected to the side above the hanger 1 by a diagonal brace and a support seat, so that the hydraulic push-pull rod 8 remains in a horizontal and stable state.

[0065] The shot blasting machine should be located directly below the straight track 2. A set of sliding structures is installed on both the first branch track 3 and the second branch track 4. The cooperation between the sliding structures and the "I"-shaped steel rails, as well as the sliding structures and their electrical control structures, are existing technologies and not part of the technical improvements involved in this embodiment; therefore, their detailed structures will not be described further. A liftable suspension structure is installed below the sliding structures, used to suspend and place the castings to be processed. After the castings inside the shot blasting machine have been processed, the second docking track 6 is controlled to connect with the straight track 2 and the second branch track 4. Next, the finished castings inside the shot blasting machine are moved out of the machine by the sliding and suspension structures and slide onto the second branch rail 4. Then, the docking rail is switched so that the first docking rail 5 connects with the straight rail 2 and the first branch rail 3. The castings to be processed on the first branch rail 3 can then be immediately fed into the shot blasting machine for processing. This process repeats on the two branch rails, continuously alternating between feeding and discharging, ensuring the shot blasting machine is always processing the castings. Compared to a single rail, the feeding rail structure provided in this embodiment can greatly improve the efficiency of shot blasting and reduce the idle time of the shot blasting machine.

[0066] Example 2

[0067] Based on Embodiment 1, in Embodiment 1, the sliding structure is electrically controlled to slide on the track; it can achieve automatic start and stop; when it moves the processed casting out of the shot blasting machine and slides to the bifurcation track to stop, due to the heavy weight of the suspended casting below, the sliding structure may continue to move forward a distance under the action of inertia; if the position where the sliding structure stops is close to the head end of the bifurcation track, there may be a risk of derailment after inertial sliding.

[0068] like Figure 1 As shown, a limiting post 10 is set near the head end of the first branch rail 3 and the second branch rail 4, and on the bottom surface of the first branch rail 3 and the second branch rail 4. The limiting post 10 can limit and block the sliding structure. Under the action of inertia, the sliding structure continues to slide along the track, which poses a risk of derailment. However, if the limiting post 10 is set as a fixed structure, although it can limit the sliding structure, when it is necessary to disassemble and repair the sliding structure, it is inconvenient to directly remove the sliding structure from the track due to the obstruction of the limiting post 10.

[0069] Therefore, in this embodiment, the limiting post 10 is configured as a movable structure. When it is needed to act as a limiting and blocking mechanism, it can extend from the bottom surface of the bifurcation rail. When it is necessary to disassemble the sliding structure or when the sliding structure moves away from the head end of the bifurcation rail, it can be hidden inside the bottom surface of the bifurcation rail. Furthermore, if the popping out and retraction of the limiting post 10 can be automatically controlled according to the sliding position of the arc-shaped structure, then there will be no need for manual operation of the limiting post.

[0070] like Figure 7 As shown, in this embodiment, patch pressure sensors 9 are provided near the front end of the first branch rail 3 and the second branch rail 4, and at the bottom of the track groove 301 on one side.

[0071] The patch pressure sensor 9 is connected to the PLC via communication; the PLC's instruction output port is connected to the limit drive assembly via communication; the limit drive assembly is used to limit the sliding movement of the sliding structure on the track.

[0072] like Figure 8 As shown, the aforementioned limit drive assembly includes: an electromagnet 1002, a limit post 10, and an elastic element 1003.

[0073] A groove 1001 is provided near the front end of the first branch rail 3 and the second branch rail 4, and located on the bottom surface of the first branch rail 3 and the second branch rail 4; a limiting post 10 is movably provided in the groove 1001; the limiting post 10 as a whole or its upper end is made of a magnetically attracted metal material.

[0074] An electromagnet 1002 is installed on the upper surface of the slot 1001; the control component of the electromagnet 1002 is connected to the PLC; the upper end of the elastic element 1003 is installed on the upper surface of the slot 1001; the lower end of the elastic element 1003 is installed on the annular protrusion 1005 on the side wall of the limiting post 10; the elastic element 1003 is a spring.

[0075] Electromagnet 1002 and its control components are existing technologies, and their detailed structure and principles are not described in detail. When the sliding structure moves on the bifurcated track and is about to approach the head end of the bifurcated track, the sliding structure presses against the patch pressure sensor 9. The patch pressure sensor 9 collects the pressure signal and feeds the collected pressure signal into the PLC. After receiving the pressure signal, the PLC sends a control command to the control component of electromagnet 1002. The control component de-energizes electromagnet 1002. At this time, the compressed spring recovers its deformation. Under the action of the elastic force, the limiting post 10 is ejected from the insertion slot 1001, extending a part of the insertion slot 1001, which acts as a limiting and blocking function for the sliding structure. When the control component energizes electromagnet 1002, it magnetically attracts the limiting post 10, causing the limiting post 10 to move upward and completely hide in the insertion slot 1001, and the spring is compressed.

[0076] Example 3

[0077] Based on Embodiment 2, in Embodiment 2, the limiting post 10 is only connected by a spring. After the limiting post 10 pops out of the insertion slot 1001, it may shake to a certain extent, which may affect the limiting and blocking function.

[0078] As a preferred embodiment, such as Figure 8 As shown, in this embodiment, two symmetrical sliding grooves 1004 are formed on the inner wall of the insertion groove 1001; symmetrically arranged embedding blocks 1006 are provided on both sides of the annular protrusion 1005 on the side wall of the limiting post 10; the embedding blocks 1006 are movably embedded in the sliding grooves 1004; the embedding blocks 1006 can move up and down relative to the sliding grooves 1004. With the cooperation of the sliding grooves 1004 and the embedding blocks 1006, the movement of the limiting post 10 in the vertical direction is not affected. At the same time, the cooperation of the embedding blocks 1006 and the sliding grooves 1004 can make the pop-out or retraction of the limiting post 10 more stable; after the limiting post 10 pops out, its swaying amplitude is avoided.

[0079] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0080] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A feeding mechanism for a shot blasting machine, characterized in that, include: Hanger, straight rail, first branch rail, second branch rail, first docking rail, second docking rail and docking rail drive assembly; A first branch rail and a second branch rail are respectively installed below the hanger; A straight rail is provided on the rear side of the first and second branch rails; A docking rail drive assembly is movably installed on the hanger between the straight rail and the first and second branch rails. A first docking rail and a second docking rail are respectively provided below the docking rail drive assembly; The first and second docking rails move left and right under the drive of the docking rail drive assembly, connecting the straight rail to the first or second branch rail respectively.

2. The shot blasting machine feeding mechanism according to claim 1, characterized in that, The straight track, the first branch track, the second branch track, the first docking track, and the second docking track all have the same track width, height, and track groove depth. The straight rail, the first branch rail, the second branch rail, the first connecting rail, and the second connecting rail are all configured as "I"-shaped steel rail structures.

3. The shot blasting machine feeding mechanism according to claim 1, characterized in that, The docking rail drive assembly includes: a sliding crossbeam of the moving plate, a docking rail moving plate, and a hydraulic push-pull rod; Two sliding crossbeams for the movable plate are provided, both of which are mounted on the hanger; A docking rail moving plate is movably arranged between the two sliding crossbeams of the moving plates; the two sides of the docking rail moving plate are respectively movably arranged on the two sliding crossbeams of the moving plates; The bottom surface of the docking rail moving plate is respectively provided with a first docking rail and a second docking rail; A hydraulic push-pull rod is provided on one side of the hanger; the telescopic end of the hydraulic push-pull rod is located on the upper surface of the docking rail moving plate; under the telescopic action of the hydraulic push-pull rod, the docking rail moving plate can move back and forth.

4. The shot blasting machine feeding mechanism according to claim 3, characterized in that, Sliding slots are provided on the opposite surfaces of the two sliding crossbeams of the moving plate; The contact sides of the docking rail moving plate and the two moving plate sliding beams are provided with transverse protrusions. The protrusions on both sides are respectively movably embedded into the sliding slots opened on the two sliding crossbeams of the moving plate.

5. The shot blasting machine feeding mechanism according to claim 3, characterized in that, A push-pull vertical plate is vertically installed on the upper surface of the docking rail moving plate; The telescopic end of the hydraulic push-pull rod is located on the push-pull vertical plate.

6. The shot blasting machine feeding mechanism according to claim 3, characterized in that, The tail end of the hydraulic push-pull rod is fixedly mounted on the side above the hanger by a diagonal brace and a support base.

7. The shot blasting machine feeding mechanism according to claim 1, characterized in that, Patch pressure sensors are installed near the front end of the first and second branch rails and at the bottom of one side of the track groove. The patch pressure sensor is communicatively connected to the PLC; the PLC's instruction output port is communicatively connected to the limit drive assembly. The limit drive assembly is used to restrict the sliding movement of the sliding structure on the track.

8. The shot blasting machine feeding mechanism according to claim 7, characterized in that, The limit drive assembly includes: an electromagnet, a limit post, and an elastic element; A groove is provided near the front end of the first branch rail and the second branch rail, and on the bottom surface of the first branch rail and the second branch rail. The insertion slot is equipped with a movable limiting post; An electromagnet is installed on the top surface of the insertion slot; the control component of the electromagnet is communicatively connected to the PLC. The upper end of the elastic element is provided on the upper top surface inside the groove; The lower end of the elastic element is disposed on the annular protrusion on the side wall of the limiting post.

9. The shot blasting machine feeding mechanism according to claim 8, characterized in that, Two symmetrical sliding grooves are formed on the inner wall of the insertion groove; Embedded blocks are symmetrically arranged on both sides of the annular convex ring; The embedding block is movably embedded within the groove; The embedded block can move up and down relative to the slide.

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