Buckle type anti-falling pipe joint and machining method

Abstract

The invention relates to the technical field of connector connection and machining, and particularly discloses a buckle type anti-falling pipe connector and a machining method. The buckle type anti-falling pipe connector comprises a connector body, a clamping sleeve, an annular clamping groove and a buckle; the connector body is provided with an annular clamping groove and an external thread. A clamping buckle matched with the annular clamping groove is movably connected to the clamping sleeve, and an internal thread matched with the external thread is arranged in the clamping sleeve; the annular clamping grooves are close to the middle end of the connector body, and clamping blocks are formed by the outer fillet end edges of the groove side walls of the adjacent annular clamping grooves in the connector body. A connecting part is arranged on the clamping sleeve, an elastic column is arranged between the pressing part of the buckle and the connecting part, a buckle cavity is formed between the buckle end of the buckle and a top plate of the connecting part, and the buckle cavity can contain the clamping baffle; when the clamping sleeve is in threaded connection with the connector body, the clamping sleeve moves towards the middle end of the connector body, the round corner of the buckling end is guided and pushed by the outer round corner of the clamping block in a sliding mode and then is embedded into the annular clamping groove, the clamping block is located in the buckling cavity, and the clamping sleeve and the connector body are in buckle type anti-falling connection.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe joint connection and processing, in particular to a snap-on anti-falling pipe joint and a processing method thereof. Background Art

[0002] In the manufacturing processes of technical fields such as semiconductors, liquid crystal display panels, photovoltaics, biotechnology, pharmaceuticals, medical devices, microelectronics, optics, magnetic disks, the automotive industry, and aviation and aerospace, the fluids used are mostly corrosive chemical liquids, gases, or fluids with ultra-high purity requirements. These fluids are usually stored and transported in resin containers and conduits. The corrosion resistance of resin joints and conduits can withstand the erosion of chemical fluids. Their chemical inertness and resistance to chemical reactions can also meet the ultra-high purity and stability requirements of the fluid.

[0003] Commonly used resin materials for this type of resin joints include tetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer (PFA, also known as perfluoroalkyl compound, soluble polytetrafluoroethylene), polytetrafluoroethylene (PTFE), etc. In actual use, the joint for storing fluid needs to be connected to the delivery catheter to form a fluid passage; if the connection performance between the joint and the catheter is poor, loosening and falling off may easily cause leakage at the connection, and even cause safety accidents. Therefore, a joint with excellent connection effect and stability is needed to ensure the safety of the connection with the resin catheter.

[0004] Therefore, we provide a snap-on anti-fall-off pipe joint and a processing method. During the production and processing of the joint, we further optimize the processing of the double-annular snap-on groove of the joint, saving product cost and materials and improving product processing efficiency. Summary of the Invention

[0005] (1) Technical issues to be resolved

[0006] The problem to be solved by the present invention is to provide a snap-on anti-dropping pipe joint and a processing method thereof, so as to overcome the defects in the prior art.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the present invention provides a snap-on anti-drop pipe joint, comprising:

[0009] The connector body is provided with an annular groove and external threads;

[0010] A ferrule, wherein the ferrule is movably connected with a buckle that cooperates with the annular groove, and the ferrule is provided with an internal thread that cooperates with the external thread;

[0011] The annular groove is close to the middle end of the connector body, and the outer rounded end edge of the groove side wall of the connector body adjacent to the annular groove forms a blocking block;

[0012] A connecting portion is provided on the ferrule, an elastic column is provided between the pressing portion of the buckle and the connecting portion, a buckle cavity is formed between the buckle end of the buckle and the top plate of the connecting portion, and the buckle cavity can accommodate the block;

[0013] When the ferrule is threadedly connected to the connector body, the ferrule moves toward the middle end of the connector body, and the rounded corner of the buckle end is guided and pushed by the outer rounded corner of the stopper and then embedded into the annular groove. The stopper is located in the buckle cavity, so that the ferrule and the connector body form a buckle-type anti-falling connection;

[0014] The ferrule is first put on the pipe fitting, and then the pipe fitting and the expander are plugged and connected, and then the expander and the pipe fitting are inserted into the ferrule together (or the expander is first inserted into the ferrule, and then the pipe fitting is inserted into the expander). After the pre-insertion of the pipe fitting and the joint body is completed, the ferrule and the joint body are screwed tight by turning the knob ferrule. During this process, the internal annular contact step of the ferrule pushes the pipe fitting on the expanded convex part of the expander, so that the pipe fitting and the expander are further pushed to the inside of the ferrule bottom, so that the expander further closely contacts the inside of the ferrule to form a first seal; at the same time, the part of the pipe fitting pushed toward the expanded convex part by the annular contact step is squeezed, so that the squeezed part of the pipe fitting forms a second seal and a third seal with the expanded convex part and the annular contact step respectively. The arrangement of the buckle and the annular contact step achieves the anti-falling effect of the pipe fitting and the joint body, and also provides multiple sealing guarantees for the pipe joint.

[0015] In some embodiments, the connector body may be a single-way or multi-way connector, including but not limited to a two-way, three-way, four-way, etc.

[0016] Preferably, the buckle is L-shaped, the buckle is hinged to the connecting portion via a connecting pin, and the connecting pin is inserted into the middle end of the buckle.

[0017] Preferably, the buckle end of the buckle is rounded, and the rounded corner on the buckle end is opposite to the outer rounded corner of the stopper.

[0018] Preferably, the end of the connecting portion away from the top plate is provided with a bevel, and the pressing portion and the elastic column of the buckle are located at the bevel of the connecting portion.

[0019] Preferably, two annular grooves are provided on the connector body, and the two annular grooves are symmetrically arranged on the connector body.

[0020] Preferably, there is a reserved portion between the two annular grooves on the connector body, and the reserved portion is polygonal or circular.

[0021] Preferably, when the ferrule is threadedly connected and snap-fitted to the connector body, the internal thread of the ferrule and the external thread of the connector body are not screwed to the ends of the threads.

[0022] Furthermore, when the ferrule is threadedly and snap-fitted to the connector body, the end edge of the ferrule contacts the end edge of the connector body, causing the stopper to be squeezed toward the middle end of the connector body, thereby forming a seal at the contact point between the ferrule and the stopper.

[0023] Preferably, the ferrule is provided with a plurality of anti-slip ridges.

[0024] In some embodiments, the fan-shaped jaws move within three-way guide holes of an internal support chuck, which is in transmission connection with a transmission box of a machining lathe. The adjustment frame is fixedly connected to a dual-axis slide, and two slides on the adjustment frame are slidably connected to the slide rails. The tool holder and slide are detachably connected via a bolt, and the blade is detachably screwed into a mating slot in the tool holder. A reduction motor is mounted at one end of the adjustment frame, and the cutting end of the blade is flush with the side wall of the tool holder.

[0025] A method for processing a snap-on anti-dropout pipe joint comprises the following steps:

[0026] S1. Slide a two-way connector body without an annular groove onto the fan-shaped jaws of the inner support chuck, and control the cylinder through the controller to expand the fan-shaped jaws outward and support the connector body inward;

[0027] S2. Enter the preset reserved portion diameter data of the joint body into the controller, and replace the corresponding slotting groove diameter blades on the two tool holders. After obtaining the entered reserved portion diameter data, the controller encodes it and transmits it to the reduction motor. After receiving the instruction data, the reduction motor controls the bidirectional screw rod to operate through the output end, so that the two slides slide relatively on the adjustment frame until the distance sensor detects that the distance data between the two tool holders is equal to the entered reserved portion diameter data and the reduction motor stops running. At this time, the end-edge distance between the two blades of the two tool holders is the diameter of the reserved portion on the joint body. When the diameter of the reserved portion is value B in the figure, the material loss of the joint body is minimized, saving the production cost of the joint body.

[0028] S3. After the operator aligns the blade with the connector body, the controller controls the transmission box to drive the inner support chuck to operate, and controls the dual-axis slide to drive the adjustment frame to feed to the specified position, so that the two blades can complete the grooving of the two annular grooves on the connector body at one time.

[0029] (3) Beneficial effects

[0030] Compared with the prior art, the snap-on anti-drop pipe joint and processing method provided by the present invention have the following beneficial effects:

[0031] 1. The snap-on anti-dropout connector provided by the present invention is provided with an annular groove on the connector body and a snap on the ferrule, so that the ferrule completes the snap connection between the snap and the annular groove during the connection process with the threaded knob of the connector body. On the basis of the traditional threaded connection of the connector, there is no need for manual redundant connection operations, and the threaded and snap-on connections of the connector body and the ferrule are completed simultaneously, which provides a double protection for preventing the connector body and the ferrule from disengaging, further reducing the situation where the connection performance of the catheter and the connector body is poor and leakage occurs due to loosening and disengagement of the connector body and the ferrule, and even causes safety accidents.

[0032] 2. The present invention performs synchronous cutting of the double annular grooves on the joint body by relative adjustment of the internal support chuck and the double tool holder, eliminating the operation steps of cutting the two annular grooves twice, and solving the problem that the diameter of the reserved part for clamping by the fixture chuck cannot be shortened due to the need for two separate cutting processes of the joint body. While achieving the simultaneous processing of the two annular grooves and improving the processing efficiency, the diameter of the reserved part of the joint body is shortened, so that the reserved part of the joint body can be shortened, saving the production cost of the joint body and improving the grooving processing efficiency of the joint body.

[0033] 3. The present invention enters the preset reserved diameter data of the joint body into the controller and replaces the corresponding slotting groove blades on the two tool holders. After the controller obtains the entered reserved diameter data, it encodes it and transmits it to the reduction motor. After the reduction motor receives the instruction data, it controls the operation of the bidirectional screw through the output end, so that the two slides slide relative to each other on the adjustment frame until the distance sensor detects that the distance data between the two tool holders is equal to the entered reserved diameter data. At the same time, the reduction motor stops running. The two tool holders are adjusted by the set adjustment frame, which is convenient for the operator to perform diversified processing operations on the annular grooves on the joint bodies of different specifications and product models. The entire adjustment operation is simple and convenient, which brings convenience to the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0035] Figure 1 A perspective view of the present invention;

[0036] Figure 2 An exploded view of the present invention;

[0037] Figure 3 is a cutaway view of the present invention;

[0038] Figure 4 A three-dimensional diagram of the connector body of the present invention;

[0039] Figure 5 is a cross-sectional view of the connector body of the present invention;

[0040] Figure 6 This is a reference schematic diagram of the connection between the connector body and the external pipe fitting of the present invention;

[0041] Figure 7 It is a schematic diagram of the ferrule structure of the present invention;

[0042] Figure 8 It is an exploded view of the ferrule of the present invention;

[0043] Figure 9 This is a schematic diagram of the connection between the ferrule and the connector body of the present invention;

[0044] Figure 10 This is a schematic diagram of the processing of the annular groove on the connector body of the present invention;

[0045] Figure 11 This is a front view of a schematic diagram of processing of an annular groove on a connector body of the present invention;

[0046] Figure 12 A side view of a schematic diagram of processing the annular groove on the connector body of the present invention;

[0047] Figure 13 This is a schematic diagram of the internal support chuck structure of the present invention;

[0048] Figure 14 A side view of the inner support chuck of the present invention;

[0049] Figure 15 It is a schematic diagram of the structure of the adjustment frame and the tool holder of the present invention;

[0050] Figure 16 A first top view showing a schematic diagram of processing of an annular groove on a connector body according to the present invention;

[0051] Figure 17 This is a second top view of the schematic diagram of the processing of the annular groove on the connector body of the present invention; the corresponding component names of the various reference numerals in the figure are:

[0052] 1. Connector body; 101. First fillet; 102. Annular groove; 103. External thread;

[0053] 2. ferrule; 201. connecting portion; 202. L-shaped buckle; 2021. buckle end; 2022. top block; 2023. buckle cavity; 203. connecting pin; 204. elastic column; 205. internal thread;

[0054] 4. Internal support chuck; 401. Cylinder; 402. Three-way guide hole; 403. Fan-shaped jaws;

[0055] 5. Double-axis slide;

[0056] 6. Adjustment frame; 601. Slide rail; 602. Slide; 603. Bidirectional screw; 604. Reducer motor;

[0057] 7. Tool holder; 701. Matching groove; 702. Distance sensor;

[0058] 8. Blade. DETAILED DESCRIPTION

[0059] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0060] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the features in the following embodiments and embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0061] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0062] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0063] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples, however, one skilled in the art will appreciate that the examples can be practiced without these specific details.

[0064] The following describes the technical solutions provided by various embodiments of the present application in conjunction with the accompanying drawings.

[0065] See Figures 1 to 9 The present invention provides a snap-on anti-fall-off pipe joint, comprising a body 1, an annular groove 102 and an external thread 103 being provided on the joint body 1; a ferrule 2, a ferrule 2 being movably connected with a buckle 202 cooperating with the annular groove 102, and an internal thread 205 being threadably cooperating with the external thread 103; the annular groove 102 is close to the middle end of the joint body 1, and the outer rounded end edge of the groove side wall adjacent to the annular groove 102 on the joint body 1 forms a stopper 101; a connecting portion 201 is provided on the ferrule 2, an elastic column 204 is provided between the pressing portion of the buckle 202 and the connecting portion 201, a buckle cavity 2023 is formed between the buckle end 2021 of the buckle 202 and the top plate 2022 of the connecting portion 201, and the buckle cavity 2023 can accommodate the buckle 101.

[0066] See Figures 3 to 9 When the ferrule 2 is threadedly connected to the connector body 1, the ferrule 2 moves toward the middle end of the connector body 1, and the rounded corner of the buckle end 2021 is guided and pushed by the outer rounded corner of the stopper 101 and then embedded in the annular groove 102. The stopper 101 is located in the buckle cavity 2023, so that the ferrule 2 and the connector body 1 form a buckle-type anti-falling connection.

[0067] See Figure 6The ferrule 2 is first put on the pipe fitting, and then the pipe fitting and the expander are connected by plugging. The expander and the pipe fitting are then inserted into the ferrule 2 together (or the expander is first inserted into the ferrule 2, and then the pipe fitting is inserted into the expander). After the pre-insertion of the pipe fitting and the joint body 1 is completed, the ferrule 2 and the joint body 1 are screwed together by turning the knob ferrule 2. During this process, the internal annular contact step of the ferrule 2 pushes the pipe fitting on the expanded convex part of the expander, so that the pipe fitting and the expander are further pushed to the bottom of the ferrule 2, so that the expander further closely contacts the interior of the ferrule 2 to form a first seal; at the same time, the part of the pipe fitting pushed toward the expanded convex part by the annular contact step is squeezed, so that the squeezed part of the pipe fitting forms a second seal and a third seal with the expanded convex part and the annular contact step respectively. The arrangement of the buckle 202 and the annular contact step achieves the anti-falling effect of the pipe fitting and the joint body 1, and also provides multiple sealing guarantees for the pipe joint.

[0068] The connector body 1 can be a single-way or multi-way connector, including but not limited to a two-way, three-way, four-way, etc.

[0069] See Figures 2 to 9 The buckle 202 is set in an L shape, and the buckle 202 is hinged to the connecting part 201 through the connecting pin 203. The connecting pin 203 is inserted in the middle end of the buckle 202, and the buckle end 2021 of the buckle 202 is set with a rounded corner. The rounded corner on the buckle end 2021 of the buckle 202 is set opposite to the outer rounded corner of the block 101. The end of the connecting part 201 away from the top plate 2022 is set with a bevel. The pressing part and the elastic column 204 of the buckle 202 are located at the bevel of the connecting part 201. There are two annular grooves 102 on the joint body 1. The two annular grooves 102 are symmetrically arranged on the joint body 1, and a number of anti-slip edges are provided on the sleeve 2.

[0070] See Figures 3 to 9 There is a reserved portion between the two annular grooves 102 on the connector body 1, and the reserved portion is polygonal or circular. When the ferrule 2 is threadedly connected and snap-fitted to the connector body 1, the internal thread 205 of the ferrule 2 and the external thread 103 of the connector body 1 are not screwed to the end of the thread. When the ferrule 2 is threadedly connected and snap-fitted to the connector body 1, the end edge of the ferrule 2 contacts the end edge of the connector body 1, so that the stopper 101 is squeezed toward the middle end of the connector body 1, so that the contact portion between the ferrule 2 and the stopper 101 forms a seal.

[0071] See Figures 4 to 10The fan-shaped clamping claw 403 moves in the three-way guide hole 402 of the inner support chuck 4, the inner support chuck 4 is connected to the transmission box of the processing lathe, the adjusting frame 6 is fixedly connected to the dual-axis slide 5, the two slides 602 on the adjusting frame 6 are slidably connected to the slide rail 601, the tool holder 7 is detachably connected to the slide 602 through a bolt rod, the blade 8 is detachably connected to the matching groove 701 of the tool holder 7 through a screw, and the reduction motor 604 is installed at one end of the adjusting frame 6, and the side end edge of the cutting head of the blade 8 is flush with the side wall of the tool holder 7.

[0072] See Figures 16 and 17 The minimum diameter of the reserved portion of the joint body 1 can be value B, which is smaller than value A. When the reserved portion of the joint body 1 adopts value B, the material loss of the joint body 1 is the most considerable, saving the production cost of the joint body 1.

[0073] See Figure 4 and Figures 10 to 17 A method for processing a snap-on anti-dropout pipe joint comprises the following steps:

[0074] S1. Slide the double-pass connector body 1 without the annular groove 102 onto the fan-shaped clamping jaws 403 of the inner support chuck 4. Controller cylinder 401 is controlled by the controller to expand the fan-shaped clamping jaws 403 to support the connector body 1.

[0075] S2. Enter the preset reserved portion diameter data of the joint body 1 into the controller, and replace the corresponding slotting groove diameter blades 8 on the two tool holders 7. After obtaining the entered reserved portion diameter data, the controller encodes it and transmits it to the reduction motor 604. After receiving the instruction data, the reduction motor 604 controls the bidirectional screw rod 603 to operate through the output end, so that the two slides 602 slide relatively on the adjustment frame 6 until the distance sensor 702 detects that the distance data between the two tool holders 7 is equal to the entered reserved portion diameter data, and the reduction motor 604 stops running. At this time, the end-to-side distance between the two blades 8 of the two tool holders 7 is the diameter of the reserved portion on the joint body 1;

[0076] S3. After the operator performs the tool alignment operation between the blade 8 and the connector body 1, the controller controls the transmission box to drive the inner support chuck 4 to operate, and controls the dual-axis slide 5 to drive the adjustment frame 6 to feed to the specified position, so that the two blades 8 can complete the grooving processing of the two annular grooves 102 on the connector body 1 at one time.

[0077] The same or similar parts between the various embodiments in this specification can be referred to each other, and each embodiment focuses on the differences from other embodiments.

[0078] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A snap-on anti-drop pipe joint, characterized in that: include: A connector body (1), wherein the connector body (1) is provided with an annular groove (102) and an external thread (103); A ferrule (2), wherein a buckle (202) is movably connected to the ferrule (2) and matches the annular groove (102), and an internal thread (205) is provided in the ferrule (2) and matches the external thread (103); The annular groove (102) is close to the middle end of the connector body (1), and the outer rounded end edge of the groove side wall of the connector body (1) adjacent to the annular groove (102) forms a stopper (101); A connecting portion (201) is provided on the ferrule (2), an elastic column (204) is provided between the pressing portion of the buckle (202) and the connecting portion (201), a buckle cavity (2023) is formed between the buckle end (2021) of the buckle (202) and the top plate (2022) of the connecting portion (201), and the buckle cavity (2023) can accommodate the clamp (101); When the ferrule (2) is threadedly connected to the connector body (1), the ferrule (2) moves toward the middle end of the connector body (1), and the rounded corner of the buckle end (2021) is guided and pushed by the outer rounded corner of the stopper (101) and then embedded in the annular groove (102). The stopper (101) is located in the buckle cavity (2023), so that the ferrule (2) and the connector body (1) form a buckle-type anti-drop connection; The connector body (1) can be a single-way or multi-way connector.

2. The snap-on anti-drop pipe joint according to claim 1, characterized in that: The buckle (202) is arranged in an L-shape, and the buckle (202) is hinged to the connecting portion (201) via a connecting pin (203), and the connecting pin (203) is inserted into the middle end of the buckle (202).

3. The snap-on anti-drop pipe joint according to claim 1, characterized in that: The buckle end (2021) of the buckle (202) is rounded, and the rounded corner on the buckle end (2021) of the buckle (202) is opposite to the outer rounded corner of the stopper (101).

4. The snap-on anti-drop pipe joint according to claim 1, characterized in that: One end of the connecting portion (201) away from the top plate (2022) is provided with a bevel, and the pressing portion and the elastic column (204) of the buckle (202) are located at the bevel of the connecting portion (201).

5. The snap-on anti-drop pipe joint according to claim 1, characterized in that: Two annular grooves (102) are provided on the connector body (1), and the two annular grooves (102) are symmetrically arranged on the connector body (1).

6. The snap-on anti-drop pipe joint according to claim 5, characterized in that: A reserved portion is provided between the two annular grooves (102) on the joint body (1), the reserved portion being polygonal or circular, and a plurality of anti-slip edges are provided on the ferrule (2).

7. The snap-on anti-drop pipe joint according to claim 1, characterized in that: When the ferrule (2) and the connector body (1) are threadedly connected and snap-fitted, the internal thread (205) of the ferrule (2) and the external thread (103) of the connector body (1) are not screwed to the ends of the threads.

8. The snap-on anti-drop pipe joint according to claim 7, characterized in that: When the ferrule (2) is threadedly connected and snap-fitted to the connector body (1), the end edge of the ferrule (2) contacts the end edge of the connector body (1), causing the stopper (101) to be squeezed toward the middle end of the connector body (1), thereby forming a seal at the contact portion between the ferrule (2) and the stopper (101).

9. A method for processing a snap-on anti-drop-off pipe joint, applied to the snap-on anti-drop-off pipe joint according to any one of claims 1 to 8, characterized in that: The steps include: S1. A double-pass connector body (1) without an annular groove (102) is placed on the fan-shaped clamping claw (403) of the inner support clamp (4), and the fan-shaped clamping claw (403) is expanded outward and supported inward by a controller cylinder (401); S2, entering the preset reserved portion diameter data of the joint body (1) in the controller, and replacing the corresponding slotting groove diameter blades (8) on the two tool holders (7), the controller encodes the entered reserved portion diameter data after receiving it, and transmits it to the reduction motor (604), the reduction motor (604) controls the bidirectional screw rod (603) to operate through the output end after receiving the instruction data, so that the two slides (602) slide relatively on the adjustment frame (6), until the distance sensor (702) detects that the distance data between the two tool holders (7) is equal to the entered reserved portion diameter data, and the reduction motor (604) stops running, at which time the end-to-side distance between the two blades (8) of the two tool holders (7) is the diameter of the reserved portion on the joint body (1); S3. After the operator performs the tool alignment operation between the blade (8) and the connector body (1), the controller controls the transmission box to drive the inner support chuck (4) to operate, and controls the double-axis slide (5) to drive the adjustment frame (6) to feed to a specified position, so that the two blades (8) complete the slotting process of the two annular grooves (102) on the connector body (1) at one time.

10. A method for processing a snap-on anti-dropout pipe joint according to claim 9, characterized in that: The fan-shaped clamping claw (403) moves in the three-way guide hole 402 of the inner support chuck (4), the inner support chuck (4) is connected to the transmission box of the processing lathe, the adjusting frame (6) is fixedly connected to the double-axis slide (5), the two slides (602) on the adjusting frame (6) are slidably connected to the slide rail (601), the tool holder (7) is detachably connected to the slide (602) through a bolt rod, the blade (8) is detachably connected to the matching groove (701) of the tool holder (7) through a screw, the reduction motor (604) is installed at one end of the adjusting frame (6), and the side end edge of the cutting head of the blade (8) is flush with the side wall of the tool holder (7).

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