Stainless steel pipe fitting external thread intelligent machining equipment

Abstract

This invention relates to the field of pipe fitting processing and discloses an intelligent processing device for external threads of stainless steel pipe fittings. The device includes: a processing platform having an installation cavity and a conveying cavity, the conveying cavity being filled with liquid; multiple fixed strips disposed within the conveying cavity, each fixed strip having multiple dividing protrusions connected to its top; and two movable strips disposed within the conveying cavity, each movable strip having multiple lifting protrusions connected to its top, located on both sides of the dividing protrusions and slidably disposed within the conveying cavity. Compared to existing technologies that rely on manual loading and unloading of individual pipe fittings, resulting in low efficiency, this invention achieves stable positioning and orderly arrangement of pipe fittings through a combination of fixed strips and dividing protrusions, preventing pipe fittings from overlapping and accumulating in the liquid. The selective lifting action of the lifting protrusions enables individual, directional, and reliable conveying of pipe fittings, effectively avoiding interference, jamming, or misalignment among multiple fittings, and significantly improving feeding accuracy and cycle control capabilities.

Description

Technical Field

[0001] This invention relates to the field of pipe fitting processing technology, specifically to an intelligent processing equipment for external threads of stainless steel pipe fittings. Background Technology

[0002] Stainless steel pipe fittings, as important connection and sealing elements, are widely used in industries such as petrochemicals, shipbuilding, food, and pharmaceuticals. The quality of their external thread machining directly affects assembly reliability and system sealing. Existing external thread machining equipment mostly employs CNC machining and special-purpose machine tools, which can adequately meet the requirements for thread accuracy and surface quality.

[0003] However, in actual production, after each workpiece is processed, operators still need to perform necessary workpiece replacement and preparation, which to some extent affects overall production efficiency and continuous operation capability. To meet the industry's demand for efficient, stable, and automated processing, it is urgent to optimize and upgrade existing processing equipment. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an intelligent processing device for external threads of stainless steel pipe fittings, aiming to alleviate the aforementioned problems to at least some extent.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0006] A smart machining equipment for external threads of stainless steel pipe fittings, comprising:

[0007] A processing platform having an installation cavity and a conveying cavity, the conveying cavity being filled with liquid;

[0008] Multiple fixed strips are provided in the conveying cavity, and multiple dividing protrusions are connected to the top of the fixed strips. Two movable strips are also provided in the conveying cavity, and multiple lifting protrusions are connected to the top of the movable strips. They are located on both sides of the multiple dividing protrusions and are slidably disposed in the conveying cavity.

[0009] A top frame is provided on the top of the processing platform. The top frame is provided with a fixing part for fixing the pipe fittings, and the top frame is also provided with a rotating part for rotating the pipe fittings.

[0010] A lifting platform is provided in the conveying chamber, which is perpendicular to the fixed part, and is used to move one of the pipe fittings to the fixed part by moving the lifting platform downwards.

[0011] A conveying component located between the mounting cavity and the lifting platform is used to move the moving bar up and down.

[0012] The turning component located on the top frame is used for machining the external threads of the pipe fittings fixed to the fixing part.

[0013] Preferably, the processing platform has a feed inlet on one side, which contains a receiving plate, and a discharge outlet on the other side, with a wedge-shaped strip fixed inside the discharge outlet, and the fixing strip fixed to the wedge-shaped strip.

[0014] Preferably, the turning component includes a translation block slidably connected to the top frame, a vertical translation block on the translation block, a hydraulic cylinder a connected to the translation block, a drive shaft of the hydraulic cylinder a fixed to the vertical translation block, a turning head fastened to the bottom of the vertical translation block by bolts, a lead screw rotatably connected to the top frame, a motor a also connected to the top frame, a drive shaft of the motor a fixed to the lead screw, and the translation block threadedly engaged with the lead screw.

[0015] Preferably, the rotating part includes a spline shaft rotatably connected to the top frame, a spline sleeve slidably connected to the spline shaft, a spring a connected between the two, a positioning boss connected to the spline sleeve, a motor b connected to the top frame, and a drive shaft of the motor b fixed to the spline shaft.

[0016] Preferably, the fixing part includes an elastic telescopic rod connected to the top frame, a top bar connected to the telescopic shaft of the elastic telescopic rod, a guide rail a connected to the top bar, a connecting frame rotatably connected to the spline sleeve, and a guide rod a slidably engaged with the guide rail a connected to the connecting frame.

[0017] Preferably, the conveying component includes a conveying frame slidably connected to the mounting cavity, the top of the conveying frame extending into the conveying cavity, the moving bar connected to the conveying frame, a diamond-shaped bar connected to the conveying frame, a guide rail b connected to the top of the mounting cavity, a guide rod b slidably connected inside the guide rail b, a spring b connected between the two, and a spring c connected between the conveying frame and the mounting cavity.

[0018] Preferably, a top rod is slidably connected to the bottom of the conveying cavity, the bottom of the top rod extends into the mounting cavity and is rotatably connected to a connecting rod, the bottom end of the connecting rod is rotatably connected to the guide rod b, and the top rod is located at the bottom of the lifting platform.

[0019] Preferably, a positioning plate is slidably connected inside the conveying cavity, a guide rail c is connected to the bottom of the positioning plate, a guide rod c is slidably fitted inside the guide rail c, a connecting rod is connected to the conveying frame, and the top of the connecting rod extends into the conveying cavity and is fixed to the guide rod c.

[0020] Preferably, a hydraulic cylinder b is connected inside the mounting cavity, and the drive shaft of the hydraulic cylinder b extends into the conveying cavity and is connected to the lifting platform.

[0021] Preferably, the inner wall of the lifting platform is rotatably connected to multiple rollers.

[0022] In summary, the present invention has the following main beneficial effects:

[0023] Compared with the existing technology that relies on manual loading and unloading of each component, resulting in low efficiency, this invention achieves stable positioning and orderly arrangement of pipe components through a combination of fixed strips and separating protrusions, preventing the components from overlapping and accumulating in the liquid. By selectively lifting the protrusions, the invention enables the one-by-one, directional, and reliable conveying of pipe components, effectively avoiding interference, jamming, or misalignment among multiple components, and significantly improving feeding accuracy and cycle control capabilities.

[0024] The vertical fixed-point lifting of the lifting platform enables stable docking and precise positioning of the pipe fitting and the fixed part, ensuring consistent posture during processing. Combined with the set rotating part and turning parts, the pipe fitting can be stably processed for external threads in a stable state, improving surface quality and dimensional consistency.

[0025] In addition, the liquid filling design allows for thorough lubrication pretreatment of the fittings before machining, reducing turning resistance. After machining, the liquid disturbance and vibration cleaning effect generated during the lifting and lowering process helps remove residues from the fitting surface, improving product cleanliness. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the processing platform structure of the present invention;

[0028] Figure 3 This is a cross-sectional schematic diagram of the processing platform structure of the present invention;

[0029] Figure 4 This is another cross-sectional schematic diagram of the processing platform structure of the present invention;

[0030] Figure 5 yes Figure 3 Enlarged schematic diagram of the local structure at point A;

[0031] Figure 6 yes Figure 4 Enlarged schematic diagram of the local structure at point B;

[0032] Figure 7 This is a schematic diagram of the conveying component structure of the present invention;

[0033] Figure 8 This is a schematic diagram of the linkage structure of the present invention.

[0034] Figure label:

[0035] 100. Processing platform; 101. Mounting cavity; 102. Conveying cavity; 103. Fixing strip; 104. Dividing ridge; 105. Moving strip; 106. Lifting ridge; 107. Top frame; 108. Lifting platform;

[0036] 200. Feed inlet; 201. Receiving plate; 202. Discharge outlet; 203. Wedge strip;

[0037] 300. Translation block; 301. Vertical translation block; 302. Hydraulic cylinder a; 303. Turning cutter head; 304. Lead screw; 305. Motor a;

[0038] 400. Splined shaft; 401. Splined sleeve; 402. Spring a; 403. Positioning boss; 404. Motor b; 405. Elastic telescopic rod; 406. Top bar; 407. Guide rail a; 408. Connecting bracket; 409. Guide rod a;

[0039] 500. Conveyor frame; 501. Diamond strip; 502. Guide rail b; 503. Guide rod b; 504. Spring b; 505. Spring c; 506. Top rod; 507. Connecting rod;

[0040] 600, Positioning plate; 601, Guide rail c; 602, Guide rod c; 603, Connecting rod; 604, Hydraulic cylinder b; 605, Roller shaft. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] refer to Figures 1-8 A smart processing device for external threads of stainless steel pipe fittings is provided in this embodiment. The device includes a processing platform 100, which has an installation cavity 101 and a conveying cavity 102, wherein the conveying cavity 102 is filled with liquid.

[0043] The conveying cavity 102 is provided with multiple fixing strips 103, which are arranged parallel to each other along the conveying direction. Multiple dividing protrusions 104 are connected to the top of each fixing strip 103. The dividing protrusions 104 are arranged along the length of the fixing strip 103, and are spaced apart to provide lateral positioning and spacing guidance for the pipe fittings, ensuring an orderly arrangement of the pipe fittings within the conveying cavity 102. The top of each dividing protrusion 104 may be a sloped or arc-shaped structure.

[0044] The conveying cavity 102 is further provided with two movable bars 105, located on both sides of the plurality of separating protrusions 104, and slidably disposed relative to the conveying cavity 102 in the vertical direction. Each movable bar 105 has a plurality of lifting protrusions 106 connected to its top, the positions of which correspond to the gaps between the separating protrusions 104. Through the lifting and lowering movement of the movable bars 105, the lifting protrusions 106 can rise at a specific time, pass through the gaps between the separating protrusions 104, contact the lower part of the pipe fitting, and lift it to a predetermined position.

[0045] The conveying chamber 102 is equipped with a lifting platform 108, located in the middle region between the fixing bars 103. The lifting platform 108 is vertically aligned with the fixing part in the vertical direction and is used to lift a single pipe fitting to the fixing part. The lifting platform 108 is driven by a conveying component disposed between the mounting chamber 101 and the lifting platform 108 to achieve its vertical movement.

[0046] The fixing part is located inside the top frame 107 and is used to clamp and position the pipe before processing; the top frame 107 is also provided with a rotating part for rotating the fixed pipe to complete the external thread processing task.

[0047] Furthermore, when the moving bar 105 is in its initial descending position, the pipe is arranged in the conveying cavity 102 by multiple separating protrusions 104. Whenever the lifting platform 108 descends to its lowest position, the two moving bars 105 move upward synchronously, and the connected lifting protrusions 106 pass through the gaps between the separating protrusions 104, lifting the pipe at the corresponding position from its limited state and pushing it towards the center position; when the pipe is accurately delivered above the lifting platform 108, the lifting platform 108 rises, delivering the pipe to the fixing part and clamping it for processing.

[0048] Furthermore, the top frame 107 is also provided with a turning component, which is used to perform external thread processing on the pipe fixed to the fixing part.

[0049] Through the above settings:

[0050] 1. First, multiple fixing strips 103 are arranged at intervals along the conveying direction within the conveying chamber 102. The tops of these strips are connected to dividing protrusions 104, forming multiple limiting grooves for lateral positioning and spacing guidance of the pipe fittings. The pipe fittings are partially submerged in liquid within the conveying chamber 102 and arranged sequentially between the dividing protrusions 104, in a state awaiting processing. The liquid can be lubricant or water; the specific selection can be flexibly determined according to process requirements.

[0051] Before machining, the liquid can wet and lubricate the surface of the pipe fitting. In particular, when a lubricating fluid is used, it can effectively reduce the frictional resistance in the subsequent turning process and improve cutting stability and thread surface quality.

[0052] 2. When the processing cycle starts, the moving bar 105 is in the initial descending state, and the connected lifting protrusion 106 is located below the separating protrusion 104 and does not contact the pipe fitting. After one processing cycle is completed, the lifting platform 108 descends to the lowest point and enters the next feeding preparation stage.

[0053] Subsequently, the two moving strips 105 begin to move upward synchronously, and the lifting protrusions on them support the lower surface of the pipe from below. As it continues to rise, the pipe is lifted up gradually. Because the lifting protrusion 106 is provided with an inclined surface, the pipe slides and rolls in the conveying direction under the combined action of gravity and lifting angle, and finally falls into the gap formed by the next separating protrusion 104.

[0054] This bottom-up, single-piece lifting and feeding method avoids problems such as multiple pieces sliding and jamming, and achieves precise separation and orderly conveying of pipe fittings one by one. It is suitable for stainless steel pipe fittings with smooth surfaces and easy rolling.

[0055] 3. When one of the pipe fittings is lifted to the processing station, the lifting platform 108 rises, pushing the corresponding single pipe fitting from the liquid to the position of the fixing part. During this process, the fixing part clamps and positions it. Immediately afterwards, the rotating part starts, driving the clamped pipe fitting to rotate; the turning part cooperates with the rotational motion to perform external thread machining on the pipe fitting.

[0056] The cooperation between the fixed and rotating parts ensures the positioning rigidity and rotational accuracy of the pipe fittings during processing; the setting of the turning parts enables direct processing of the workpiece in a fixed state, improving the overall level of automation and the consistency of thread accuracy.

[0057] 4. After processing is completed, the lifting platform 108 descends and the fixing part is released. At this time, the processed pipe falls back into the gap of the dividing protrusion 104 at the top of the fixing strip 103 and moves forward synchronously with the feeding rhythm of the next cycle.

[0058] After the processed pipe fittings are returned, during subsequent transportation, the liquid medium, combined with the slight vibrations generated by the lifting and falling motion during transportation, can effectively clean residual debris or cutting oil stains on the surface of the pipe fittings, thus helping to improve product cleanliness and subsequent assembly quality.

[0059] Based on the above embodiments, a further step is to provide a feed inlet 200 on one side of the processing platform 100. The feed inlet 200 is connected to the conveying cavity 102, and an inclined receiving plate 201 is provided inside it. The receiving plate 201 is used to receive pipe fittings that are externally conveyed or manually placed, and guide them to slide into the conveying cavity 102, where they fall onto multiple fixed bars 103, thus completing automatic feeding.

[0060] The processing platform 100 has a discharge port 202 on the other side for discharging the processed pipe fittings from the processing platform 100. The discharge port 202 is provided with a wedge-shaped strip 203 for providing angular support and positional limitation for the fixing strip 103 where the separating protrusion 104 is located.

[0061] With the above settings, during the feeding stage, the pipe slides off the receiving plate 201. Since the receiving plate 201 has an inclined structure, the pipe slides along its surface under the action of gravity and eventually enters the conveying chamber 102 naturally and falls accurately into the fixed bar 103.

[0062] During the unloading stage after processing, the finished pipe falls back down with the lifting platform 108, returning to the fixed bar 103 and the separating protrusion 104 in the conveying chamber 102. In the subsequent feeding action, the moving bar 105 and the lifting protrusion 106 continue to lift and push the subsequent pipe forward, while the previous pipe moves to the discharge end with the feeding rhythm.

[0063] The discharge port 202, located at the end of the conveying chamber 102, forms an outlet area with a downward inclination angle through the internal wedge-shaped strip 203. Under the guidance of gravity and angle, the processed pipe naturally slides out of the processing platform 100, completing the unloading operation.

[0064] Meanwhile, throughout the entire processing cycle, the pipe is always partially immersed in the liquid. Before processing, the liquid (such as lubricant) can pre-lubricate the entire surface of the pipe, which is beneficial to improving the surface quality and cutting stability during subsequent turning. After processing, the vibration and liquid flow during the up-and-down and feeding processes will disturb, disperse, absorb, and dilute any remaining cutting debris on the surface of the pipe, thus playing a cleaning role.

[0065] Based on the above embodiments, the turning component further includes a multi-stage motion structure disposed on the top frame 107.

[0066] Specifically, the turning component includes a translation block 300 slidably connected to the top frame 107. The translation block 300 has a vertically movable block 301 for supporting the turning tool. A hydraulic cylinder a302 for vertical drive is connected to the translation block 300, and the drive shaft of the hydraulic cylinder a302 is fixedly connected to the vertically movable block 301 to drive the vertically movable block 301 to move up and down.

[0067] The bottom of the vertical moving block 301 is fastened with a turning head 303 by bolts for external thread machining of pipe fittings.

[0068] A lead screw 304 is rotatably connected to the top frame 107. One end of the lead screw 304 is connected to a motor a305 for driving its rotation. The drive shaft of the motor a305 is fixedly connected to the lead screw 304. The lead screw 304 is threadedly engaged with the translation block 300, and is used to drive the translation block 300 to move laterally along the axis of the lead screw 304 (i.e., the turning direction).

[0069] With the above configuration, the turning component, through the structural combination of motor a305, lead screw 304, translation block 300, hydraulic cylinder a302, and vertical movement block 301, constitutes a tool system with bidirectional feed adjustment capability, which can perform stable external thread machining on stainless steel pipes fixed in the fixed part.

[0070] Specifically, when a pipe fitting is delivered to the machining station by the lifting platform 108 and clamped by the fixing part, the motor a305 starts, driving the connected lead screw 304 to rotate. The lead screw 304 and the translation block 300 are threadedly engaged. The rotation of the motor a305 causes the translation block 300 to move laterally in a straight line along the axis of the lead screw 304, thereby driving the turning head 303 to feed in the turning direction. During the turning process, according to the required thread machining depth, the hydraulic cylinder a302 drives the connected vertical moving block 301 to move up and down, realizing the radial advance and retraction adjustment of the turning head 303. The cutting head is fixed to the lower end of the vertical moving block 301. Through the fine adjustment control of the hydraulic cylinder a302, the cutting depth can be made more precise, and the cutting head can be quickly withdrawn after machining to prevent scratching the workpiece surface.

[0071] Based on the above embodiments, the rotating part further includes a spline drive structure mounted on the top frame 107.

[0072] Specifically, the rotating part includes a spline shaft 400 rotatably connected to the top frame 107, and a spline sleeve 401 is slidably connected to the outside of the spline shaft 400. The spline shaft 400 and the spline sleeve 401 are engaged by a keyway structure to ensure that the spline sleeve 401 can rotate synchronously during the rotation of the spline shaft 400, and at the same time have a certain axial movement capability.

[0073] A spring a402 is provided between the spline shaft 400 and the spline sleeve 401. This spring is used to automatically push the spline sleeve 401 to its initial position in the non-drive state. A positioning boss 403 is connected to the spline sleeve 401, which is used to cooperate with the end face of the pipe when the spline sleeve 401 moves to a specific position to achieve positioning and limiting.

[0074] The top frame 107 is also connected to a motor b404, whose drive shaft is fixedly connected to the spline shaft 400, which is used to provide power input to the rotating part and realize the rotation drive of the pipe.

[0075] With the above setup, after a pipe fitting is delivered to the top by the lifting platform 108, the position of the positioning boss 403 is moved so that the protrusion on the positioning boss 403 is inserted into the end face of the pipe fitting. After tightening, the motor b404 starts, driving its output shaft to rotate together with the spline shaft 400. When the spline shaft 400 rotates, the spline sleeve 401 fitted outside it will maintain synchronous rotation with the spline shaft 400 due to the keyway structure.

[0076] The spline structure ensures coaxial rotational rigidity during rotation, avoiding rotational eccentricity or slippage caused by forces during processing.

[0077] Based on the above embodiments, the fixing part is further used to clamp and position the stainless steel pipe that is sent to the processing position to ensure stability and coaxiality during the turning process.

[0078] Specifically, the fixing part includes an elastic telescopic rod 405 connected to the top frame 107. The elastic telescopic rod 405 can be vertical, and a top bar 406 is connected to its telescopic shaft for transmitting external force.

[0079] A horizontally arranged guide rail a407 is connected to the top bar 406 to provide linear guidance support for the spline sleeve 401.

[0080] A connecting bracket 408 is rotatably connected to the outside of the spline sleeve 401. One end of the connecting bracket 408 is rotatably connected to the spline sleeve 401, and the other end is connected to a guide rod a409 that slides within the guide rail a407. The guide rod a409 can slide within the guide rail a407.

[0081] With the above settings, during the process of the lifting platform 108 moving upward to send the pipe to the processing position, the lifting platform 108 can touch the position of the top bar 406, and the top bar 406 will displace, causing the elastic telescopic rod 405 to contract and generate potential energy.

[0082] Simultaneously, guide rail a407 moves upward along with top bar 406. Inside guide rail a407, guide rod a409 is slidably fitted. One end of guide rod a409 is inserted into the guide rail groove, and the other end is rotatably connected to the end of connecting frame 408. When guide rod a409 moves horizontally, this horizontal displacement applies a pulling force to connecting frame 408 through the rotational connection point between guide rod a409 and connecting frame 408, which can pull spline sleeve 401 to produce axial displacement along its rotation axis.

[0083] During axial sliding, the spline sleeve 401 maintains its spline connection with the spline shaft 400, thus preserving rotational freedom while moving axially. The spline sleeve 401 continues to move to the right until its front positioning boss 403 contacts the end face of the pipe fitting or the transmission interface, forming a stable torque transmission connection.

[0084] At this point, the spline sleeve 401 is in a passively positioned state, completing the mechanical connection with the processed pipe fitting. During the subsequent rotation, the spline shaft 400 is driven to rotate by the motor b404, and the spline shaft 400 drives the spline sleeve 401 to rotate synchronously. The rotational motion is transmitted to the pipe fitting through the positioning boss 403, realizing the rotational drive of the pipe fitting.

[0085] After processing is completed, the lifting platform 108 descends, and the top bar 406 resets accordingly, returning to its initial position under the restoring action of the elastic telescopic rod 405; the guide rail a407 descends, the guide rod a409 slides in the opposite direction, the connecting frame 408 swings back, driving the spline sleeve 401 to axially retract under the action of the spring a402, disengaging from the pipe, completing the rotation release and clamping release process of this cycle, and preparing for the next cycle of processing.

[0086] This structure cleverly utilizes the natural contact behavior of the lifting platform 108 as it rises, triggering the top bar 406 to move upward the instant the component is placed in position. This initiates a series of passive mechanism linkages, ensuring that the pipe fitting completes rotational pre-connection preparation as soon as it is placed into the positioning position. Compared to traditional clamping mechanisms, this embodiment ensures a compact action flow and high cycle efficiency.

[0087] Based on the above embodiments, the conveying component further includes a conveying frame 500 slidably connected within the mounting cavity 101. A diamond-shaped strip 501 is connected to the conveying frame 500 for pushing it to move vertically. A guide rail b502 is fixedly connected to the top of the mounting cavity 101. A guide rod b503 is slidably connected within the guide rail b502. A spring b504 connects the guide rod b503 and the guide rail b502 for providing a guiding and return function. A spring c505 is also connected between the conveying frame 500 and the mounting cavity 101 for providing a vertical restoring force.

[0088] With the above setup, after the lifting platform 108 raises the pipe to the machining position and completes the turning, the lifting platform 108 immediately moves downward. As it descends to the predetermined low position, the guide rod b503 slides horizontally along the guide rail b502. During the sliding process of the guide rod b503, one end of it can contact the upper inclined surface structure of the rhombus 501 and push the rhombus 501 to move upward in the vertical direction, thereby causing the two moving bars 105 to move upward synchronously in the vertical direction.

[0089] As the moving bar 105 rises, the multiple lifting protrusions 106 connected to its top move upwards accordingly, forming an effective supporting force on the bottom of the pipe fitting above it, causing the pipe fitting to break free from its original limiting state, thereby achieving the purpose of transporting the pipeline.

[0090] This structure implements the sequential logic of automatic feeding after processing, ensuring that each feeding is done one piece at a time, avoiding misalignment or tilted stacking of multiple pieces, and improving the equipment's operating efficiency and automation level.

[0091] Based on the above embodiment, further, a push rod 506 is slidably connected to the bottom of the conveying cavity 102. The bottom of the push rod 506 passes through the processing platform 100 and extends into the mounting cavity 101. The bottom of the push rod 506 is connected to a connecting rod 507 via a rotating joint. The other end of the connecting rod 507 is rotatably connected to the guide rod b503. The push rod 506 is located at the bottom of the lifting platform 108 and forms a contact engagement with the lifting platform 108.

[0092] With the above setup, during the process of the lifting platform 108 completing the turning and lowering of the current pipe fitting, its bottom will contact the push rod 506, and drive the push rod 506 to slide downwards during the downward movement. As the push rod 506 moves downwards, it causes the connecting rod 507 at its bottom end to deflect, and the other end of the connecting rod 507, due to its connection with the guide rod b503, pulls the guide rod b503 along the guide rail b502 to slide.

[0093] This structure forms a linkage path of "lifting platform 108 descends → push rod 506 moves → connecting rod 507 pulls guide rod b503 → guide rod b503 slides → pushes diamond strip 501 up," ensuring that the feeding operation of the next pipe fitting is triggered only after the lifting platform 108 has completely left the machining position. Feeding is driven solely by the descending displacement of the lifting platform 108, with the feeding timing precisely aligned with the end of turning, effectively avoiding premature ejection or missed feeding. Furthermore, the push rod 506, connecting rod 507, and guide rod b503 form a closed force transmission link, preventing malfunctions caused by the inertia of the lifting platform while ensuring feeding stability and cycle consistency.

[0094] Based on the above embodiments, a positioning plate 600 for lateral positioning of the pipe fitting is slidably connected inside the conveying cavity 102. A guide rail c601 is connected to the bottom of the positioning plate 600, and a guide rod c602 is slidably fitted inside the guide rail c601. A connecting rod 603 is provided on the conveying frame 500 inside the mounting cavity 101. The top of the connecting rod 603 extends vertically into the conveying cavity 102 and is fixedly connected to the guide rod c602.

[0095] With the above setup, after the equipment completes the turning of a pipe fitting, the lifting platform 108 returns the pipe fitting to the conveying area and continues to move downwards. As the lifting platform 108 descends to its lowest position, its bottom will press against the top rod 506, thereby driving the connecting rod 507 to rotate, causing the guide rod b503 to slide horizontally along the guide rail b502.

[0096] The guide rod b503 is located in the upper-middle part on one side of the rhombus strip 501. Therefore, in the initial stage of sliding, its end will contact and push the upper inclined surface of the rhombus strip 501, causing the entire rhombus strip 501 to move vertically. This, in turn, drives the connected conveyor frame 500 to rise synchronously, pushing the two moving bars 105 upward to complete the lifting action of the new pipe fitting. At the same time, the spring b504 is stretched to accumulate potential energy, providing energy for subsequent reset.

[0097] After the pipe fitting is successfully transported and positioned on the lifting platform 108, the lifting platform 108 starts its upward movement again to lift the pipe fitting to the processing position. As the lifting platform 108 is no longer under downward pressure on the push rod 506, the connecting rod 507 drives the guide rod b503 to slide in the opposite direction, and the push rod 506 then moves upward to reset.

[0098] Because the guide rod b503 is located on the opposite side of the rhombus 501, it will contact the other inclined surface of the rhombus 501, causing the conveyor frame 500 to descend under the restoring action of the spring b504. This descent action will guide the guide rod c602 to move vertically downward within the guide rail c601 via the connecting rod 603, thereby causing the positioning plate 600, which is fixedly connected to the guide rod c602, to move laterally, achieving adaptive lateral limit correction for the newly conveyed pipe fitting.

[0099] Through the aforementioned structural and operational linkage, the positioning plate 600 automatically performs a lateral adjustment after each lifting action of the lifting platform 108, ensuring that the next pipe fitting is centered at the preset workstation and avoiding skewing. Positioning is achieved by utilizing the structural displacement naturally generated during the processing cycle, thus improving processing stability.

[0100] Based on the above embodiments, the mounting cavity 101 is further connected to a hydraulic cylinder b604 for driving the lifting platform 108 to rise and fall. The drive shaft of the hydraulic cylinder b604 extends vertically into the conveying cavity 102 and is connected to the lifting platform 108 to provide vertical lifting drive.

[0101] With the above setup, during operation, the hydraulic cylinder b604, as the core lifting drive actuator, extends and retracts its drive shaft under hydraulic pressure, thereby driving the lifting platform 108, which is fixedly connected to it, to rise and fall vertically. When the hydraulic cylinder b604 extends upward, the lifting platform 108 moves upward, supporting the pipe fitting on it to the top fixed part for clamping and processing; after the turning is completed, the hydraulic cylinder b604 retracts, driving the lifting platform 108 to move downward, completing this processing cycle.

[0102] Based on the above embodiments, the inner wall of the lifting platform 108 is further rotatably connected with multiple rollers 605, which are evenly distributed along the pipe support surface of the lifting platform 108 to provide rolling support during pipe rotation.

[0103] With the above configuration, when the lifting platform 108 rises to support a single pipe to the processing position, the pipe will contact multiple rollers 605 located on the inner wall of the lifting platform 108. Since the rollers 605 can rotate freely, the pipe can achieve low-friction rolling contact on its surface during vertical lifting and lowering, which can effectively reduce the frictional resistance between the pipe and the lifting platform 108, especially during turning.

[0104] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent processing equipment for external threads of stainless steel pipe fittings, characterized in that, include: A processing platform (100) has an installation cavity (101) and a conveying cavity (102), the conveying cavity (102) being filled with liquid; Multiple fixed strips (103) are provided in the conveying cavity (102). Multiple dividing protrusions (104) are connected to the top of the fixed strips (103). Two movable strips (105) are also provided in the conveying cavity (102). Multiple lifting protrusions (106) are connected to the top of the movable strips (105), which are located on both sides of the multiple dividing protrusions (104) and are slidably provided in the conveying cavity (102). A top frame (107) is provided on the top of the processing platform (100). The top frame (107) is provided with a fixing part for fixing the pipe fitting, and the top frame (107) is also provided with a rotating part for rotating the pipe fitting. A lifting platform (108) is provided in the conveying chamber (102), the lifting platform (108) is perpendicular to the fixed part, and is used to move the lifting platform (108) upward to move one of the pipes to the fixed part; A conveying component located between the mounting cavity (101) and the lifting platform (108) is used to move the moving bar (105) up and down. A turning component provided on the top frame (107) is used for machining the external threads of the pipe fittings fixed to the fixing part; The conveying component includes a conveying frame (500) slidably connected to the mounting cavity (101), the top of the conveying frame (500) extending into the conveying cavity (102), a moving bar (105) connected to the conveying frame (500), a diamond-shaped bar (501) connected to the conveying frame (500), a guide rail (502) connected to the top of the mounting cavity (101), a guide rod (503) slidably connected inside the guide rail (502), a spring (504) connected between the two, the guide rod (503) abutting against the diamond-shaped bar (501), and a spring (505) connected between the conveying frame (500) and the mounting cavity (101). A top rod (506) is slidably connected to the bottom of the conveying cavity (102). The bottom of the top rod (506) extends into the mounting cavity (101) and is rotatably connected to a connecting rod (507). The bottom end of the connecting rod (507) is rotatably connected to the guide rod b (503). The top rod (506) is located at the bottom of the lifting platform (108). The mounting cavity (101) is connected to a hydraulic cylinder b (604), and the drive shaft of the hydraulic cylinder b (604) extends into the conveying cavity (102) and is connected to the lifting platform (108).

2. The intelligent processing equipment for external threads of stainless steel pipe fittings according to claim 1, characterized in that, The processing platform (100) has a feed inlet (200) on one side, which has a receiving plate (201) inside. The processing platform (100) has a discharge outlet (202) on the other side. A wedge-shaped strip (203) is fixed inside the discharge outlet (202), and the fixing strip (103) is fixed on the wedge-shaped strip (203).

3. The intelligent processing equipment for external threads of stainless steel pipe fittings according to claim 1, characterized in that, The turning component includes a translation block (300) slidably connected to the top frame (107), a vertical block (301) provided on the translation block (300), a hydraulic cylinder a (302) connected to the translation block (300), the drive shaft of the hydraulic cylinder a (302) being fixed to the vertical block (301), the bottom of the vertical block (301) being fastened to the turning head (303) by bolts, a lead screw (304) being rotatably connected to the top frame (107), a motor a (305) also being connected to the top frame (107), the drive shaft of the motor a (305) being fixed to the lead screw (304), and the translation block (300) being threaded onto the lead screw (304).

4. The intelligent processing equipment for external threads of stainless steel pipe fittings according to claim 1, characterized in that, The rotating part includes a spline shaft (400) rotatably connected to the top frame (107), a spline sleeve (401) slidably connected to the spline shaft (400), a spring a (402) connected between the two, a positioning boss (403) connected to the spline sleeve (401), a motor b (404) connected to the top frame (107), and the drive shaft of the motor b (404) fixed to the spline shaft (400).

5. The intelligent processing equipment for external threads of stainless steel pipe fittings according to claim 4, characterized in that, The fixing part includes an elastic telescopic rod (405) connected to the top frame (107), a top bar (406) connected to the telescopic shaft of the elastic telescopic rod (405), a guide rail a (407) connected to the top bar (406), a connecting frame (408) rotatably connected to the spline sleeve (401), and a guide rod a (409) slidably engaged with the guide rail a (407) connected to the connecting frame (408).

6. The intelligent processing equipment for external threads of stainless steel pipe fittings according to claim 1, characterized in that, A positioning plate (600) is slidably connected inside the conveying cavity (102). A guide rail (601) is connected to the bottom of the positioning plate (600). A guide rod (602) is slidably fitted inside the guide rail (601). A connecting rod (603) is connected to the conveying frame (500). The top of the connecting rod (603) extends into the conveying cavity (102) and is fixed to the guide rod (602).

7. The intelligent processing equipment for external threads of stainless steel pipe fittings according to claim 1, characterized in that, The inner wall of the lifting platform (108) is rotatably connected to multiple rollers (605).

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