Numerical control pre-assembling machine for ferrule joint

Abstract

The invention provides a numerical control pre-assembling machine for a ferrule joint, and relates to the technical field of industrial robots. The numerical control pre-assembling machine for the ferrule joint comprises a shell; the limiting block is arranged at the top of the shell; and the jacking mechanism comprises an upward jacking unit and a positioning seat, the positioning seat is limited in the limiting block, the upward jacking unit is arranged under the positioning seat, and the upward jacking unit can vertically move upwards in the direction of the positioning seat. When the device works, an operator places a steel pipe sleeved with a clamping sleeve and a nut at the top end of the jacking unit, after the device is started, the jacking unit vertically moves upwards, the steel pipe is pushed into the positioning base above, under the constraint of an inner cavity of the positioning base, the clamping sleeve is extruded to deform and evenly cut into the outer wall of the steel pipe, and preassembling is completed; and the centering property of the pre-assembling device and the pre-assembling device is ensured through the limiting block, so that manual wrench operation is replaced by controllable mechanical force, and the problems of non-uniform pressure and unstable quality of manual pre-assembling are fundamentally solved.

Description

Technical Field

[0001] This invention relates to the field of industrial robot technology, and in particular to a CNC-controlled pre-assembly machine for ferrule connectors. Background Technology

[0002] In hydraulic piping systems, compression fittings are widely used in high-pressure pipeline connections in fields such as engineering machinery, mining equipment, hydraulic stations, and aerospace due to their advantages of compact structure, convenient assembly and disassembly, and high pressure resistance. The core of their sealing and fastening reliability lies in the pre-assembly process of the compression fitting, that is, using external pressure to make the inner edge of the compression fitting evenly cut into the outer wall of the rigid pipe, forming a continuous metal sealing band.

[0003] For a long time, this crucial process has relied mainly on traditional manual methods: operators need to use a vise to fix the connector body, manually tighten the nut, and judge whether the pre-assembly is in place based on experience (such as feeling the torque or observing the number of rotations of the nut). The above mode is highly dependent on the operator's skill level and feel, and its pre-assembly quality directly determines the leak-proof performance of the connector under high-pressure conditions. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art by proposing a CNC-controlled pre-assembly machine for ferrule connectors.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a CNC-controlled pre-assembly machine for ferrule connectors, comprising: case; A limiting block is provided at the top of the housing; The top mounting mechanism includes an upper mounting unit and a positioning seat. The positioning seat is confined within the limiting block, and the upper mounting unit is located directly below the positioning seat. The upper mounting unit can move vertically upward toward the positioning seat.

[0006] Preferably, the limiting block includes a first positioning block, a second positioning block, and a support column. The first positioning block and the second positioning block are detachably connected, and the first positioning block and the second positioning block together enclose a limiting space that is narrow at the top and wide at the bottom. The positioning seat is embedded in the limiting space.

[0007] Preferably, the upper top unit includes a top shaft and a top head. The top shaft is movable in a vertical direction, and the top end of the top shaft is connected to one end of the top head. The other end of the top head is a conical surface, and the top head is coaxially arranged with the positioning seat.

[0008] Preferably, the top surface of the top shaft is provided with a groove, the top head abuts against the groove, the top circumference of the top shaft is provided as a first annular surface, the bottom surface circumference of the top head is provided as a second annular surface, and the first annular surface abuts against the second annular surface.

[0009] Preferably, the top mounting mechanism further includes a rubber ring, which is sleeved on the top head and located between the first annular surface and the second annular surface.

[0010] Preferably, the CNC pre-assembly machine for the ferrule connector further includes a blocking mechanism, which is located between the top head and the positioning seat. When the top head moves upward in the vertical direction, the blocking mechanism gradually withdraws from between the top head and the positioning seat, so that the conical surface of the top head enters the positioning seat.

[0011] Preferably, the blocking mechanism includes an inclined block and a spring piece. One end of the spring piece is connected to the first positioning block, and the other end of the spring piece is bent and rotatably connected to the inclined block. The inclined block slides into the limiting space, and the inclined block is located between the top head and the positioning seat.

[0012] Preferably, the ferrule connector CNC pre-assembly machine further includes a drive mechanism, which is connected to the top shaft drive to move the top shaft in a vertical direction.

[0013] Preferably, the drive mechanism includes a drive shaft, a spring, a cylinder, a piston, and a hydraulic pump. The cylinder and the hydraulic pump are connected within the housing. The piston is slidably disposed within the cylinder. One end of the piston is connected to the drive shaft, and the other end of the drive shaft is detachably connected to the top shaft. The spring is sleeved on the drive shaft, and both ends of the spring abut against the inner top wall of the cylinder and the piston, respectively. The hydraulic pump is used to pump hydraulic oil into or out of the cylinder.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: by fixing the limiting block to the top of the housing and confining the positioning seat therein, a stable upper working platform is formed. The upper lifting unit below is aligned with the working platform. During operation, the operator places the steel pipe with the sleeve and nut on it at the top of the upper lifting unit. After starting the equipment, the upper lifting unit moves vertically upward and pushes the steel pipe into the upper positioning seat. Under the constraint of the inner cavity of the positioning seat, the sleeve is squeezed and deformed, and cuts evenly into the outer wall of the steel pipe to complete the pre-assembly. The centering of the two is ensured by the limiting block, thereby realizing the replacement of manual wrench operation with controllable mechanical force, fundamentally solving the problems of uneven pressure and unstable quality of manual pre-assembly. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the CNC-controlled pre-assembly machine for ferrule connectors proposed in this invention; Figure 2 This is a structural schematic diagram from another perspective of the CNC control pre-assembly machine for the ferrule connector proposed in this invention; Figure 3 This is a front view of the CNC-controlled pre-assembly machine for the ferrule connector proposed in this invention; Figure 4 for Figure 3 BB-direction sectional view in the middle; Figure 5 This is a schematic diagram of the top-mounting mechanism in the CNC-controlled pre-assembly machine for ferrule connectors proposed in this invention; Figure 6 for Figure 4 Enlarged view of the structure at point A in the image; Figure 7 This is a top view of the CNC-controlled pre-assembly machine for the ferrule connector proposed in this invention; Figure 8 for Figure 7 CC-direction sectional view.

[0016] In the diagram: 1. Housing; 2. Limiting block; 21. First positioning block; 22. Second positioning block; 23. Support column; 3. Top mounting mechanism; 31. Top shaft; 311. First annular surface; 32. Top head; 321. Second annular surface; 33. Positioning seat; 34. Rubber ring; 4. Blocking mechanism; 41. Inclined stop block; 42. Spring; 5. Drive mechanism; 51. Drive shaft; 52. Spring; 53. Cylinder; 54. Piston; 55. Hydraulic oil pump. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] The terms used in this invention, such as "upper," "lower," "left," "right," "middle," and "one," are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] In the description of this specification, the references to terms such as "embodiment," "one embodiment," "some implementations," "exemplary," and "one implementation," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or implementation of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0022] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0023] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, an embodiment of the present invention provides a CNC-controlled pre-assembly machine for ferrule connectors, comprising: Casing 1; Limiting block 2 is located at the top of housing 1; The top mounting mechanism 3 includes an upper mounting unit and a positioning seat 33. The positioning seat 33 is confined within the limiting block 2. The upper mounting unit is located directly below the positioning seat 33 and can move vertically upward toward the positioning seat 33.

[0024] Specifically, housing 1 provides a mounting base and protective shell for all internal functional components. The center of the limiting block 2 may have a through hole or cavity, its core function being to provide a precise and fixed mounting position. The top-mounting mechanism 3 is divided into two main parts: the upper lifting unit and the positioning seat 33. The positioning seat 33 is directly mounted and confined within the space provided by the limiting block 2, ensuring that it is firmly restrained horizontally and circumferentially by the limiting block 2, preventing free movement. The interior of the positioning seat 33 has precisely machined cavities according to the standard specifications of the ferrule connector, used to accommodate and guide the ferrule and nut to be pre-installed. It is a key mold determining the pre-installation molding quality. The upper lifting unit is capable of being driven and moving vertically upwards towards the positioning seat 33, and the axis of motion of the upper lifting unit must be strictly aligned with the central axis of the positioning seat 33.

[0025] In this optional embodiment, a stable upper working platform is formed by fixing the limiting block 2 to the top of the housing 1 and confining the positioning seat 33 therein. The upper lifting unit below is aligned with the working platform. During operation, the operator places the steel pipe with the sleeve and nut on it at the top of the upper lifting unit. After starting the equipment, the upper lifting unit moves vertically upward and pushes the steel pipe into the upper positioning seat 33. Under the constraint of the inner cavity of the positioning seat 33, the sleeve is squeezed and deformed, and cuts evenly into the outer wall of the steel pipe to complete the pre-assembly. The centering of the two is ensured by the limiting block 2, thereby realizing the replacement of manual wrench operation with controllable mechanical force, fundamentally solving the problems of uneven pressure and unstable quality of manual pre-assembly.

[0026] Optionally, the limiting block 2 includes a first positioning block 21, a second positioning block 22 and a support column 23. The first positioning block 21 and the second positioning block 22 are detachably connected, and the first positioning block 21 and the second positioning block 22 together enclose a limiting space that is narrow at the top and wide at the bottom. The positioning seat 33 is embedded in the limiting space.

[0027] Specifically, the first positioning block 21 and the second positioning block 22 can be detachably connected by bolts, pins, or other means. When the first positioning block 21 and the second positioning block 22 are combined, their internal contours together form a limiting space that is narrow at the top and wide at the bottom. The limiting space can be a stepped hole or a tapered hole. The support column 23 is used to firmly support and fix the combined positioning blocks to the top of the housing 1, resisting the downward pressure generated during pre-assembly. The positioning seat 33 is machined to match the shape of the limiting space that is narrow at the top and wide at the bottom, so that it can be fitted into the space.

[0028] In this optional embodiment, the detachable first positioning block 21 and second positioning block 22 make the installation, replacement, and maintenance of the positioning seat 33 extremely convenient. The operator only needs to remove the fasteners connecting the first positioning block 21 and the second positioning block 22 to separate the two blocks, thus easily removing or placing the positioning seat 33. This solves the problem of convenience when the mold (positioning seat 33) needs to be replaced due to wear or specification changes. The upper-narrow, lower-wide limiting space design achieves dual positioning for the positioning seat 33. The lower wide space facilitates the initial placement of the positioning seat 33, while the upper narrow space (or stepped surface) provides final radial precision positioning and axial limitation. The conical or stepped surface effectively prevents the positioning seat 33 from rotating or floating during operation, ensuring its absolutely fixed position. By replacing positioning seats 33 with different inner cavities and using the same set of openable first positioning blocks 21 and second positioning blocks 22 for clamping and fixing, the equipment can be quickly adapted to pre-installation of ferrule connectors of different pipe diameters and standards, significantly improving the equipment's versatility and economy.

[0029] Furthermore, the upper top unit includes a top shaft 31 and a top head 32. The top shaft 31 can move in the vertical direction, and the top end of the top shaft 31 is connected to one end of the top head 32. The other end of the top head 32 is a conical surface, and the top head 32 and the positioning seat 33 are coaxially arranged.

[0030] Specifically, the top shaft 31 is a rigid shaft directly driven by the drive device, constrained to move only in the vertical direction, and is the core member for transmitting the lifting force. One end of the top head 32 is connected to the top of the top shaft 31, while the other end is specially machined into a conical surface with the tip of the conical surface facing upward, for insertion into the opening of the steel pipe.

[0031] In this optional embodiment, the jacking shaft 31 is responsible for bearing and transmitting the enormous thrust from the drive device, requiring high strength and rigidity. The mandrel 32, as a consumable and functional component, is designed separately from the jacking shaft 31, facilitating the replacement of different sized conical heads for different pipe diameters. As the mandrel 32 moves upward, its conical surface first contacts the inner edge of the steel pipe. Due to the geometric characteristics of the conical surface, even if the initial placement of the steel pipe is slightly off, at the moment of contact, the inclined surface generates a radial component force, guiding the steel pipe to automatically slide towards the center, achieving automatic centering. This greatly reduces the accuracy requirements for the operator's placement of the steel pipe. As the mandrel 32 rises further, a larger area of ​​the conical surface enters the inner wall of the steel pipe, providing a stable, centrally located internal support for the steel pipe, preventing it from crushing or becoming out of round when subjected to subsequent enormous lifting forces. The coaxial arrangement of the top head 32 and the positioning seat 33, combined with the automatic centering function of the conical surface, ensures that the axes of the steel pipe, ferrule, nut and mold are completely aligned. This provides the geometric basis for the ferrule to cut into the steel pipe uniformly at 360° and form a sealing ring, effectively preventing uneven cutting depth and leakage caused by eccentricity.

[0032] Optionally, the top surface of the top shaft 31 is provided with a groove, the top head 32 abuts against the groove, the top periphery of the top shaft 31 is provided as a first annular surface 311, the bottom surface periphery of the top head 32 is provided as a second annular surface 321, and the first annular surface 311 abuts against the second annular surface 321.

[0033] Specifically, a non-circular recess, or slot, is machined in the center of the top surface of the top shaft 31. This slot can be square, hexagonal, or a circular shape with a keyway, etc. The outer periphery of the top surface of the top shaft 31 is a flat annular end face, defined as the first annular surface 311. The bottom structure of the top head 32 matches the top of the top shaft 31, and the downward-protruding part of the top head 32 abuts against the slot on the top surface of the top shaft 31 (i.e., insertion fit) to prevent the top head 32 from rotating relative to the top shaft 31. On the bottom surface of the top head 32, around the outer periphery of the central protrusion, there is also a flat annular end face, defined as the second annular surface 321. When the top head 32 is installed on the top shaft 31, the first annular surface 311 and the second annular surface 321 fit tightly together.

[0034] In this optional embodiment, the mandrel 32 and the mandrel 31 are circumferentially locked by the interlocking of the slots, ensuring that the mandrel 32 will not rotate due to friction with the end of the steel pipe during pre-assembly, thus maintaining the stability of its conical guiding function. The large-area planar contact between the first annular surface 311 and the second annular surface 321 forms the main path for axial force transmission. Compared to point or line contact, surface contact can evenly and smoothly transmit the huge lifting force from the mandrel 31 to the mandrel 32, avoiding stress concentration that could lead to local deformation or damage. The split design combined with the slot positioning makes the replacement of the mandrel 32 very quick. Simply remove the old mandrel 32, align the protrusion of the new mandrel 32 with the slot, and press it down. No tools are needed for complex tightening, greatly saving maintenance and changeover time.

[0035] Furthermore, the top mounting mechanism 3 also includes a rubber ring 34, which is fitted onto the top head 32 and is located between the first annular surface 311 and the second annular surface 321.

[0036] Specifically, the rubber ring 34 is an elastic annular sealing ring, which can be made of oil-resistant and wear-resistant rubber material. The rubber ring 34 is fitted onto the top head 32, specifically at the root of the protruding part at the bottom of the top head 32. Its spatial position after installation is exactly between the first annular surface 311 of the top shaft 31 and the second annular surface 321 of the top head 32.

[0037] In this optional embodiment, impacts may occur at the moment the mandrel 32 begins to contact the steel pipe and rises upwards, and at the moment the pre-assembly is completed and the drive equipment returns. The rubber ring 34, compressed between the first annular surface 311 and the second annular surface 321, can effectively absorb impact energy, playing a buffering and shock-absorbing role, protecting the precision mandrel 31, mandrel 32, and drive equipment, reducing equipment operating noise, and extending service life. Although the first annular surface 311 and the second annular surface 321 are required to be flat, there will always be slight microscopic unevenness. The elasticity of the rubber ring 34 can fill the microscopic gaps, ensuring that the two metal surfaces achieve more uniform contact when actually subjected to force, improving the smoothness of force transmission. The rubber ring 34 generates a rebound force after being compressed, which can provide a continuous slight axial preload, making the connection between the mandrel 32 and the mandrel 31 less prone to loosening under vibration. At the same time, it can also prevent dust, metal debris, etc. from entering between the mating surfaces of the first annular surface 311 and the second annular surface 321.

[0038] Optionally, the ferrule connector CNC control pre-assembly machine also includes a blocking mechanism 4, which is located between the top head 32 and the positioning seat 33. When the top head 32 moves upward in the vertical direction, the blocking mechanism 4 gradually withdraws from between the top head 32 and the positioning seat 33 so that the conical surface of the top head 32 enters the positioning seat 33.

[0039] In this optional embodiment, the blocking mechanism 4 occupies the working area in the initial state, and its physical presence directly affects the placement of the steel pipe. It forces the operator not to place the steel pipe vertically aligned on the tip of the mandrel 32. Due to the presence of the blocking mechanism 4, the operator must place the steel pipe laterally onto the mechanism. This naturally creates a more labor-saving and convenient lateral loading mode. The action of pushing aside the blocking mechanism 4 when the mandrel 32 moves upward realizes an important mechanical program control: first, the steel pipe is laterally supported and positioned, and then it automatically yields for vertical pre-loading. The entire process is automatically triggered by mechanical movement, without the need for additional sensors or control logic. This ensures that the steel pipe is automatically aligned and a stable support is established on the conical surface of the mandrel 32 before the final forceful pressing is performed, greatly improving the reliability and safety of the process.

[0040] Furthermore, the blocking mechanism 4 includes an inclined block 41 and a spring piece 42. One end of the spring piece 42 is connected to the first positioning block 21, and the other end of the spring piece 42 is bent and rotatably connected to the inclined block 41. The inclined block 41 slides into the limiting space and is located between the top head 32 and the positioning seat 33.

[0041] Specifically, the inclined stop 41 is installed so that it can slide horizontally, and its front end slides into the limiting space formed by the limiting block 2. Its position is exactly between the top head 32 and the positioning seat 33, with its inclined surface facing downwards and towards the conical surface of the top head 32. One end of the spring piece 42 is fixedly connected to the first positioning block 21. The other end of the spring piece 42 is bent and connected to the rear or side of the inclined stop 41, thereby providing the inclined stop 41 with an elastic restoring force toward the working center (i.e., the axial direction of the top head 32).

[0042] In this optional embodiment, the inclined block 41 penetrates the working space, and its inclined surface forms a natural slope. The operator can easily roll the steel pipe up the slope from the side. The steel pipe will slide down to the V-shaped area or stop point of the inclined block 41 due to its own weight and be stably supported. When the mandrel 32 moves upward, its conical surface first contacts and centers with the inner wall of the steel pipe. As it continues to move upward, the radial expansion force generated by the conical surface is transmitted through the steel pipe to the inclined surface of the inclined block 41, and can be decomposed into a horizontal component force. This component force overcomes the elastic force of the spring piece 42 and pushes the inclined block 41 to slide horizontally outward, thereby exiting from under the steel pipe. When the pre-installation is completed and the mandrel 32 descends and withdraws, the horizontal force acting on the inclined block 41 disappears. At this time, the elastic potential energy stored in the spring piece 42 is released, pulling the inclined block 41 back to its initial position, preparing for the next loading. The entire yielding and resetting process is completely automatic and requires no manual intervention.

[0043] Optionally, the ferrule connector CNC control pre-assembly machine also includes a drive mechanism 5, which is drivenly connected to the top shaft 31 to move the top shaft 31 in the vertical direction.

[0044] Furthermore, the drive mechanism 5 includes a drive shaft 51, a spring 52, a cylinder 53, a piston 54, and a hydraulic oil pump 55. The cylinder 53 and the hydraulic oil pump 55 are connected inside the housing 1. The piston 54 is slidably disposed inside the cylinder 53. One end of the piston 54 is connected to the drive shaft 51, and the other end of the drive shaft 51 is detachably connected to the top shaft 31. The spring 52 is sleeved on the drive shaft 51, and both ends of the spring 52 abut against the inner top wall of the cylinder 53 and the piston 54, respectively. The hydraulic oil pump 55 is used to pump hydraulic oil into or out of the cylinder 53.

[0045] Specifically, cylinder 53 is a hydraulic cylinder body fixed inside housing 1. A hydraulic oil pump 55 (which can be an electric pump) is also installed inside housing 1, connected to the inlet and outlet of cylinder 53 via oil pipes, for pumping and discharging hydraulic oil. Piston 54 is slidably disposed within the inner cavity of cylinder 53, dividing the interior of cylinder 53 into upper and lower oil chambers. One end of piston 54 (which can be the lower end) is rigidly connected to drive shaft 51. The upper end of drive shaft 51 passes through the end cap of cylinder 53 and is detachably connected to top shaft 31 (e.g., by a threaded connection). Spring 52 is sleeved on drive shaft 51. Its two ends abut against the inner top wall (or related support) of cylinder 53 and the upper surface of piston 54, respectively.

[0046] In this optional embodiment, the CNC system instructs the hydraulic pump 55 to pump high-pressure hydraulic oil into the lower oil chamber of the cylinder 53. The oil pressure pushes the piston 54 to overcome the preload of the spring 52 and the working load, causing the drive shaft 51 and the top shaft 31 to move upward, performing a pre-installation action. The system monitors the oil pressure through a pressure sensor to indirectly control the pre-installation force. After pre-installation is completed, the CNC system instructs the hydraulic pump 55 to pump hydraulic oil out of the lower oil chamber (while the upper oil chamber may be connected to the oil tank). At this time, the potential energy stored in the spring 52 is released, and its downward elastic force pushes the piston 54 downward, thereby reliably driving the drive shaft 51 and the top shaft 31 to return to their original position downward. The spring 52 here ensures the inevitability and speed of the return stroke.

[0047] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A CNC-controlled pre-assembly machine for ferrule connectors, characterized in that, include: Shell (1); A limiting block (2) is provided on the top of the housing (1); The top mounting mechanism (3) includes an upper mounting unit and a positioning seat (33). The positioning seat (33) is confined within the limiting block (2). The upper mounting unit is located directly below the positioning seat (33). The upper mounting unit can move vertically upward toward the positioning seat (33).

2. The CNC-controlled pre-assembly machine for ferrule connectors according to claim 1, characterized in that, The limiting block (2) includes a first positioning block (21), a second positioning block (22) and a support column (23). The first positioning block (21) and the second positioning block (22) are detachably connected, and the first positioning block (21) and the second positioning block (22) together enclose a limiting space that is narrow at the top and wide at the bottom. The positioning seat (33) is embedded in the limiting space.

3. The CNC-controlled pre-assembly machine for ferrule connectors according to claim 2, characterized in that, The upper unit includes a top shaft (31) and a top head (32). The top shaft (31) can move in the vertical direction, and the top end of the top shaft (31) is connected to one end of the top head (32). The other end of the top head (32) is a conical surface. The top head (32) and the positioning seat (33) are coaxially arranged.

4. The CNC-controlled pre-assembly machine for ferrule connectors according to claim 3, characterized in that, The top surface of the top shaft (31) is provided with a slot, the top head (32) abuts against the slot, the top periphery of the top shaft (31) is provided with a first annular surface (311), the bottom surface periphery of the top head (32) is provided with a second annular surface (321), and the first annular surface (311) abuts against the second annular surface (321).

5. The CNC-controlled pre-assembly machine for ferrule connectors according to claim 4, characterized in that, The top mounting mechanism (3) also includes a rubber ring (34), which is sleeved on the top head (32) and is located between the first annular surface (311) and the second annular surface (321).

6. The CNC-controlled pre-assembly machine for ferrule connectors according to claim 5, characterized in that, The ferrule connector CNC control pre-assembly machine also includes a blocking mechanism (4), which is located between the top head (32) and the positioning seat (33). When the top head (32) moves upward in the vertical direction, the blocking mechanism (4) gradually withdraws from between the top head (32) and the positioning seat (33) so that the conical surface of the top head (32) enters the positioning seat (33).

7. The CNC-controlled pre-assembly machine for ferrule connectors according to claim 6, characterized in that, The blocking mechanism (4) includes a slanted stop block (41) and a spring piece (42). One end of the spring piece (42) is connected to the first positioning block (21), and the other end of the spring piece (42) is bent and rotatably connected to the slanted stop block (41). The slanted stop block (41) slides into the limiting space, and the slanted stop block (41) is located between the top head (32) and the positioning seat (33).

8. The CNC-controlled pre-assembly machine for ferrule connectors according to claim 7, characterized in that, The ferrule connector CNC control pre-assembly machine also includes a drive mechanism (5), which is drivenly connected to the top shaft (31) so that the top shaft (31) moves in the vertical direction.

9. The CNC-controlled pre-assembly machine for ferrule connectors according to claim 8, characterized in that, The drive mechanism (5) includes a drive shaft (51), a spring (52), a cylinder (53), a piston (54), and a hydraulic oil pump (55). The cylinder (53) and the hydraulic oil pump (55) are connected inside the housing (1). The piston (54) is slidably disposed inside the cylinder (53). One end of the piston (54) is connected to the drive shaft (51), and the other end of the drive shaft (51) is detachably connected to the top shaft (31). The spring (52) is sleeved on the drive shaft (51), and both ends of the spring (52) abut against the inner top wall of the cylinder (53) and the piston (54), respectively. The hydraulic oil pump (55) is used to pump hydraulic oil into or out of the cylinder (53).

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