Limiting salient point machining device for metal pipe fitting

Abstract

The invention discloses a limiting salient point machining device for a metal pipe fitting. The limiting salient point machining device comprises a pedestal, a supporting table, a left loading and dotting mechanism, a long sliding rail, a sliding seat, a right loading and dotting mechanism, a bearing block, a positioning air cylinder and a pressing piece. According to the two-way synchronous machining device, a symmetrical double-station structure is combined with the design of the length-adjustable sliding rail, two-way synchronous machining of metal pipe fittings with different lengths is achieved, and one metal pipe fitting falls to the machining position at a time by means of the gravity of the metal pipe fitting; the metal pipe fitting in the vertical channel is divided into an upper part and a lower part through the guide pipe structure, certain bearing capacity is achieved, the problem that the metal pipe fitting deforms due to the fact that the metal pipe fitting bears large pressure when being jacked up is solved, the pneumatic positioning system and the three-jaw synchronous salient point forming mechanism are matched, high precision and consistency in the machining process are guaranteed, and machining efficiency is improved. A full-automatic process is formed through multi-cylinder cooperative control, the machining efficiency is remarkably improved, wide adaptability and long-term use stability of equipment to different pipe diameters are considered, and meanwhile maintenance complexity and manual operation requirements are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of metal pipe processing, and specifically to a device for processing limit bumps on metal pipe fittings. Background Art

[0002] As a core component in fields such as automotive fuel pipelines, aerospace hydraulic systems, and industrial equipment connection structures, the assembly accuracy of metal pipe fittings directly affects the sealing performance and reliability of the overall system; the limit bump, as a key structure for positioning and anti-disconnection between pipe fittings, needs to meet the technical requirements of accurate position and uniform forming.

[0003] Currently, Chinese Patent Application No.: CN202022956564.6 discloses a full-automatic device for punching limit points on metal pipes, including a feeding mechanism, a material transfer mechanism, and a punching mechanism. The feeding mechanism includes a guide rail, with a baffle at the end of the guide rail, a feeding frame at the lower end of the baffle, and the feeding frame is connected to a first cylinder; the material transfer mechanism includes a robotic arm; the punching mechanism includes a fixing plate, a cylindrical guide rail, and a slider. The slider is connected to a second cylinder, the second cylinder is installed on the machine frame, a punching rod is provided on the slider, the end face of the punching rod is semi-circular, a groove is provided at the central position of the end face, a core rod is provided on the fixing plate between two sliders, and a bump is provided at the top of the core rod.

[0004] However, the existing punching and processing devices for metal pipes mostly rely on stamping or spinning equipment, applying local pressure to the pipe fittings through a single station, resulting in low processing efficiency, inconvenient for multi-station synchronous operation, and difficult to meet the requirements of mass production; and usually, manual adjustment of the positioning reference leads to poor repeatability accuracy, and the deviation of the bump position is likely to cause assembly failure; in addition, the rigid structure of the equipment is fixed, inconvenient for quickly adapting to different sizes of pipe fittings, time-consuming and costly for tool change, and the maintenance complexity of the equipment and the manual operation requirements are relatively high. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for processing limit bumps on metal pipe fittings to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A limiting bump processing device for metal pipe fittings, comprising a pedestal, a support platform, a left loading and dotting mechanism, a long slide rail, a slide seat, a right loading and dotting mechanism, a bearing block, a positioning cylinder and a pressing piece. A support platform is installed on the left front side of the top of the pedestal, and the left loading and dotting mechanism is fastened to the top of the support platform. Two long slide rails are arranged on the right front side of the top of the pedestal, and slide seats are slidably connected to the tops of the two long slide rails. The top side of the slide seat is fastened to the right loading and dotting mechanism. The left loading and dotting mechanism and the right loading and dotting mechanism have the same structure and size and are symmetrically arranged. A bearing block is fastened to the bottom side of the front part of the left loading and dotting mechanism. A positioning cylinder is installed on the right part of the top side of the bearing block, and a pressing piece is connected to the output shaft at the rear side of the positioning cylinder. The left loading and dotting mechanism includes a bottom plate fastened to the support platform at the bottom, a bump structure installed in the middle of the top of the bottom plate, a vertical plate fixedly connected to the right rear side of the top of the bottom plate, a pipe carrier and a positioning frame arranged on the side of the vertical plate away from the bump structure, a first cylinder locked and fixed to the lower front part on the right side of the positioning frame, a first L-shaped piece connected to the output shaft at the rear side of the first cylinder, a second cylinder locked and fixed to the lower rear part on the left side of the pipe carrier, a second L-shaped piece connected to the output shaft at the front side of the second cylinder, a carrier piece flush with the bottom side of the second L-shaped piece, and a conduit structure installed in the middle and lower part of the pipe carrier and close to the side of the vertical plate. The positioning frame is located in front of the pipe carrier, and a cavity for loading metal pipe fittings and a vertical channel for the metal pipe fittings to fall are formed between the pipe carrier and the positioning frame. The positioning cylinder is located under the first cylinder. The rear side of the carrier piece is fastened to the vertical plate, and the carrier piece and the pressing piece are at the same horizontal height position.

[0007] Preferably, vertical through grooves are provided in the lower front part of the pipe carrier and the lower rear part of the positioning frame to change the height distance between the first cylinder and the second cylinder so that a height difference is formed between the bottom of the first L-shaped piece and the bottom of the second L-shaped piece, and the size of the height difference is between the outer diameter size of 1 metal pipe fitting and the outer diameter size of 1.3 metal pipe fittings.

[0008] Preferably, a limiting frame for limiting the stroke distance of the bump structure is arranged in the middle of the left side of the bottom plate. An outlet plate is fastened to the right front side of the top of the bottom plate, and the outlet plate is inclined downward from back to front. Double-headed screw columns are penetrated through the pipe carrier and the positioning frame, and the other side of the double-headed screw columns is penetrated through the vertical plate.

[0009] Preferably, semi-circular grooves are provided at the corresponding positions on the rear side of the pressing piece and the front side of the carrier piece. The center position of the semi-circular groove of the carrier piece and the axis position of the bumping point of the bump structure are on the same axis. A rectangular support block is arranged at the corresponding position of the pipe carrier below the right side and the carrier piece.

[0010] Preferably, the bump structure includes a cushion block with the bottom fastened to the bottom plate, a third cylinder locked and fixed above the left side of the cushion block, a support frame connected to the rear side of the right output shaft of the third cylinder, a slide table fixedly connected to the bottom side of the support frame, a short slide rail slidably connected to the bottom of the slide table, a vertical plate fixedly connected to the left side of the slide table, a fourth cylinder locked and fixed above the left side of the vertical plate, a socket connected to the outside of the right output shaft of the fourth cylinder, a bump die core assembly slidably connected to the right side inside the socket, a bump rear seat slidably connected to the left side inside the bump die core assembly, a spring arranged on the left side of the bump rear seat, and three bump hook assemblies rotatably penetrating through the right side inside the bump die core assembly. The bottom of the short slide rail is fixed to the bottom plate. The right side inner wall of the socket is in sliding contact with the bump hook assemblies. The bump die core assembly is fixedly penetrated through the middle side inside the support frame. The left side of the spring is connected to the right output shaft of the fourth cylinder. The right side of the bump rear seat is in contact with the bump hook assemblies.

[0011] Preferably, the bump die core assembly includes a barrel sleeve, a table cover, and an insertion post integrally formed from left to right. The table cover and the insertion post are in a gradient shape from left to right, and three hook grooves are circumferentially and equidistantly formed inside the table cover and the insertion post. The three hook grooves are respectively connected to the three bump hook assemblies.

[0012] Preferably, the structures and sizes of the three bump hook assemblies are the same, and they are respectively rotatably connected inside the three hook grooves. The bump rear seat is in a T shape, and the right end is in a conical shape, and the conical part is in sliding contact with the three bump hook assemblies.

[0013] Preferably, the bump hook assembly includes a hook block. A rotating shaft column is fixedly connected to the right side inside the hook block. The rotating shaft column is rotatably connected inside the table cover, so that the hook block forms a lever movement with the rotating shaft column as the fulcrum. A pointed head for forming a bump is arranged on the right side outside the hook block. The right side inner wall of the socket is an inclined surface outward, and the inclined surface is in sliding contact with the bevel at the top of the hook block.

[0014] Preferably, the conduit structure includes a mounting frame with the front bottom fixed to the carrier pipe rack, a servo motor fastened to the front side of the top of the mounting frame, a convex disc connected to the rear output end of the servo motor, a clamping rod rotatably connected to the right side of the convex disc, a tension spring arranged on the upper middle side of the rear part of the clamping rod, a support rotating piece connected to the other end of the tension spring, a grooved wheel rotatably connected to the middle side of the top of the support rotating piece, and a cross rod coaxially rotating to the middle side of the rear part of the grooved wheel. The bottom of the clamping rod is rotatably connected to the mounting frame. The upper left side of the clamping rod is intermittently engaged with the grooved wheel. The bottom of the support rotating piece is fixed to the mounting frame. The cross rod is arranged on the side of the vertical channel formed between the carrier pipe rack and the positioning rack.

[0015] Preferably, four triangular grooves are circumferentially and equidistantly formed on the front side of the outer surface of the grooved wheel. The top of the clamping rod is in a "7" - shaped structure, and the left side of the "7" - shaped structure of the clamping rod is intermittently inserted and engaged inside the triangular groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] Through the combination of a symmetric double-station structure and a design of adjustable-length sliding rails, the present invention realizes the two-way synchronous processing of metal pipe fittings of different lengths. A metal pipe fitting can be placed between the pipe-loading racks and positioning racks of the left loading dotting mechanism and the right loading dotting mechanism, and a metal pipe fitting can fall to the processing position one by one by its own gravity. The conduit structure divides the metal pipe fitting in the vertical channel into upper and lower parts, which has a certain bearing capacity and prevents the problem of deformation of the metal pipe fitting caused by the large pressure on the bottom-side metal pipe fitting when the first L-shaped piece jacks up the metal pipe fitting. And in cooperation with the pneumatic positioning system and the three-jaw synchronous bump forming mechanism, it ensures the high precision and consistency of the processing process. Through the coordinated control of multiple cylinders, a fully automated process is formed, significantly improving the processing efficiency, taking into account the wide adaptability of the equipment to different pipe diameters and the long-term use stability, while reducing the maintenance complexity and the demand for manual operation.

[0018] Both the pipe-loading rack and the positioning rack of the present invention are provided with double-headed screw columns running through them. The pipe-loading rack and the positioning rack are fixed to the side of the vertical plate through nuts, and the position distance between the pipe-loading rack, the positioning rack and the vertical plate can be changed to change the supporting position of the metal pipe fitting. And semi-circular grooves are opened at the corresponding positions on the rear side of the pressing piece and the front side of the loading piece. The center position of the semi-circular groove of the loading piece and the axis position of the bump-forming part of the bump structure are on the same axis, so as to position the metal pipe fitting on the side of the bump-forming part of the bump structure, insert the bump structure into the metal pipe fitting and punch out the limiting bumps from the inside to the outside. A rectangular support block is arranged at the corresponding position of the right lower side of the pipe-loading rack and the loading piece, improving the stability of the processing of the metal pipe fitting and ensuring the accuracy and efficiency of dotting.

[0019] The bump rear seat of the present invention is T-shaped, and the right end is conical. The conical part is in sliding contact with the three bump hook assemblies. Under the action of the spring, the bump rear seat can reset the bump hook assemblies. And when dotting, the bump rear seat can squeeze the spring to make a slight lateral displacement, ensuring the dotting effect. And the hook block forms a lever movement with the rotating shaft column as the fulcrum. When the socket moves to the right, it drives the hook block to press down, so that the hook block generates an upward lever force through the action of the rotating shaft column at the pointed head, and then punches the metal pipe fitting through the pointed head to form three bumps synchronously. After the bump hook assemblies generate the lever force to dot, they are reset to facilitate the entry and exit of the bump die core assemblies into and out of the metal pipe fitting and prevent jamming.

[0020] When the clamping rod disengages from the grooved pulley, the metal pipe fitting located inside the cross rod falls under the action of gravity. After the fall, another metal pipe fitting above falls into the cross rod. At this time, the clamping rod and the grooved pulley are re-engaged to limit the metal pipe fitting that has fallen into the cross rod, ensuring that only one metal pipe fitting falls at a time. Four triangular grooves are circumferentially and equidistantly arranged on the front side of the outer surface of the grooved pulley. The top of the clamping rod is in a "7" - shaped structure, and the left side of the "7" - shaped structure of the clamping rod is intermittently inserted and engaged inside the triangular groove to achieve a single rotation degree of the cross rod, ensuring that a single metal pipe fitting falls and is discharged in each action cycle. Moreover, the cross rod has a certain bearing capacity for the metal pipe fitting in contact with its upper part to disperse the gravity of the metal pipe fitting at the bottommost position when the metal pipe fitting is discharged from the processing place. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present invention;

[0022] Figure 2 is a schematic structural diagram of the left loading and dotting mechanism of the present invention;

[0023] Figure 3 For the present invention Figure 2 is a right view;

[0024] Figure 4 For the present invention Figure 3 is a schematic diagram of the mounting position of the carrier sheet;

[0025] Figure 5 is a partial cross - sectional schematic diagram of the bump structure of the present invention;

[0026] Figure 6 is a schematic structural diagram of the bump die core assembly of the present invention;

[0027] Figure 7 is a schematic structural diagram of the bump hook assembly of the present invention;

[0028] Figure 8 is a schematic structural diagram of the conduit structure of the present invention.

[0029] In the figure: pedestal - 1, support pedestal - 2, left loading dotting mechanism - 3, long slide rail - 4, slide seat - 5, right loading dotting mechanism - 6, bearing block - 7, positioning cylinder - 8, pressing piece - 9, bottom plate - 31, bump structure - 32, vertical plate - 33, carrier tube rack - 34, positioning rack - 35, first cylinder - 36, first L - shaped piece - 37, second cylinder - 38, second L - shaped piece - 39, carrier sheet - 40, conduit structure - 41, limit rack - 311, double - headed screw column - 331, discharge plate - 332, cushion block - 321, third cylinder - 322, support frame - 323, slide table - 324, short slide rail - 325, vertical piece - 326, fourth cylinder - 327, sleeve seat - 328, bump die core assembly - 329, bump rear seat - 3210, spring - 3211, bump hook assembly - 3212, barrel sleeve - 3291, table cover - 3292, inserting column - 3293, hook groove - 3294, hook block - 32121, rotating shaft column - 32122, pointed head - 32123, mounting frame - 411, servo motor - 412, convex disk - 413, clamping rod - 414, tension spring - 415, support rotating piece - 416, grooved wheel - 417, cross rod - 418, triangular groove - 4171. Detailed implementation mode

[0030] In order to further explain the technical solution of the present invention, the following will be elaborated in detail through specific embodiments.

[0031] Please refer to Figure 1 , the present invention provides a limiting bump processing device for metal pipe fittings, including a pedestal 1, a support pedestal 2, a left loading dotting mechanism 3, a long slide rail 4, a slide seat 5, a right loading dotting mechanism 6, a bearing block 7, a positioning cylinder 8 and a pressing piece 9. A support pedestal 2 is installed on the left front side of the top of the pedestal 1, and the left loading dotting mechanism 3 is fastened to the top of the support pedestal 2. Two long slide rails 4 are arranged on the right front side of the top of the pedestal 1, and slide seats 5 are slidably connected to the tops of the two long slide rails 4. The top side of the slide seat 5 is fastened to the right loading dotting mechanism 6. The left loading dotting mechanism 3 and the right loading dotting mechanism 6 have the same structure and size, and are symmetrically arranged to achieve two - way synchronous processing;

[0032] The right loading dotting mechanism 6 moves on the long slide rail 4 through the slide block 5 to change its lateral position, so as to adjust the distance between the left loading dotting mechanism 3 and the right loading dotting mechanism 6, in order to perform bump processing on metal pipe fittings of different lengths. A metal pipe fitting can be placed between the left loading dotting mechanism 3 and the right loading dotting mechanism 6, and one metal pipe fitting falls to the processing position at a time. The fall of the metal pipe fitting is realized by its own gravity. A bearing block 7 is firmly fixed to the front bottom side of the left loading dotting mechanism 3. A positioning cylinder 8 is installed on the right part of the top side of the bearing block 7. And the output shaft at the rear side of the positioning cylinder 8 is connected with a pressing piece 9. The pressing piece 9 presses the metal pipe fitting at the processing position into the positioning at the processing place through the positioning cylinder 8. Then, limit bumps are respectively punched outwards on both inner sides of the metal pipe fitting. Adopting a symmetrical double-station structure, stepless adjustment is realized through the long slide rail 4, which is suitable for a variety of standard pipe fitting specifications, and the whole process of feeding, positioning and processing can be automated, improving the processing efficiency and accuracy of the limit bumps, and reducing the manual intervention and maintenance costs.

[0033] Please refer to Figures 1 - 4 , the present invention provides a device for processing limit bumps of metal pipe fittings. The left loading dotting mechanism 3 includes a bottom plate 31 whose bottom is firmly fixed to the support platform 2, a bump structure 32 installed in the middle of the top of the bottom plate 31, a vertical plate 33 fixedly connected to the right rear side of the top of the bottom plate 31, a pipe carrier 34 and a positioning frame 35 arranged on the side of the vertical plate 33 away from the bump structure 32, a first cylinder 36 locked and fixed to the front lower part on the right side of the positioning frame 35, a first L-shaped piece 37 connected to the output shaft at the rear side of the first cylinder 36, a second cylinder 38 locked and fixed to the rear lower part on the left side of the pipe carrier 34, a second L-shaped piece 39 connected to the output shaft at the front side of the second cylinder 38, a carrier piece 40 flush with the bottom side of the second L-shaped piece 39, and a conduit structure 41 installed in the middle and lower part of the pipe carrier 34 and close to the side of the vertical plate 33. After the second cylinder 38 pushes out the second L-shaped piece 39 to support it under the falling metal pipe fitting, then under the action of the first cylinder 36, the first L-shaped piece 37 is pushed out to separate the lowermost metal pipe fitting from other metal pipe fittings. The positioning frame 35 is located in front of the pipe carrier 34, and a cavity for loading metal pipe fittings and a vertical channel for the metal pipe fittings to fall are formed between the pipe carrier 34 and the positioning frame 35, so that one metal pipe fitting in the cavity falls into the vertical channel one by one;

[0034] The catheter structure 41 divides the metal pipe fittings in the vertical channel into upper and lower parts, having a certain bearing capacity to prevent the problem of deformation of the metal pipe fittings caused by the large pressure on the bottom-side metal pipe fittings when the first L-shaped piece 37 jacks up the metal pipe fittings. The positioning cylinder 8 is located at the bottom side of the first cylinder 36. The rear side of the carrier sheet 40 is fastened to the vertical plate 33, and the carrier sheet 40 and the pressing piece 9 are at the same horizontal height position. After the first cylinder 36 and the second cylinder 38 cooperate to control the separation of the bottom-side metal pipe fitting from other metal pipe fittings, the pressing piece 9 further presses the metal pipe fitting into the carrier sheet 40 through the positioning cylinder 8. Then, after the bump structure 32 is inserted into the metal pipe fitting, a limiting bump is punched out.

[0035] Among them, vertical through grooves are provided in the front lower part of the pipe carrier 34 and the rear lower part of the positioning frame 35 to change the height distance between the first cylinder 36 and the second cylinder 38, so as to form a height difference between the bottom of the first L-shaped piece 37 and the bottom of the second L-shaped piece 39. The size of the height difference is between the outer diameter size of one metal pipe fitting and 1.3 times the outer diameter size of the metal pipe fitting, avoiding the simultaneous falling of two metal pipe fittings and facilitating the separation operation of the first L-shaped piece 37 separating the bottom-side metal pipe fitting from other metal pipe fittings. A limiting frame 311 for limiting the stroke distance of the bump structure 32 is provided in the middle of the left side of the bottom plate 31 to prevent detachment during the return process after the bump structure 32 is punched. The discharge plate 332 is fixedly connected to the top right front side of the bottom plate 31, and the discharge plate 332 is inclined downward from back to front. After the metal pipe fitting is punched, the metal pipe fitting is exported and collected through the discharge plate 332. Double-headed screw columns 331 are arranged through the pipe carrier 34 and the positioning frame 35, and the other side of the double-headed screw column 331 is arranged through the vertical plate 33. The pipe carrier 34 and the positioning frame 35 are fixed to the side of the vertical plate 33 by nuts, and the position distance between the pipe carrier 34, the positioning frame 35 and the vertical plate 33 can be changed to change the support position of the metal pipe fitting.

[0036] Semicircular grooves are provided at the corresponding positions on the rear side of the pressing piece 9 and the front side of the carrier sheet 40. The center position of the semicircular groove of the carrier sheet 40 and the axis position of the bump punching position of the bump structure 32 are on the same axis, so as to facilitate positioning the metal pipe fitting on the side of the bump punching of the bump structure 32, inserting the bump structure 32 into the metal pipe fitting and punching out the limiting bump from the inside to the outside. A rectangular support block is provided at the corresponding position of the lower right side of the pipe carrier 34 and the carrier sheet 40 to improve the support effect when pressing and positioning the metal pipe fitting.

[0037] Please refer to Figure 1 、 Figure 2 、 Figures 5 - 7, the present invention provides a device for processing limiting bumps on metal pipe fittings. The bump structure 32 includes a cushion block 321 whose bottom is fastened to the bottom plate 31, a third cylinder 322 locked and fixed above the left side of the cushion block 321, a support frame 323 connected to the rear side of the right output shaft of the third cylinder 322, a sliding table 324 fixedly connected to the bottom side of the support frame 323, a short slide rail 325 slidably connected to the bottom of the sliding table 324, a vertical plate 326 fixedly connected to the left side of the sliding table 324, a fourth cylinder 327 locked and fixed above the left side of the vertical plate 326, a socket 328 connected to the outside of the right output shaft of the fourth cylinder 327, a bump die core assembly 329 slidably connected to the right side inside the socket 328, a bump rear seat 3210 slidably connected to the left side inside the bump die core assembly 329, a spring 3211 arranged on the left side of the bump rear seat 3210, and three bump hook assemblies 3212 rotatably penetrating through the right side inside the bump die core assembly 329. The bottom of the short slide rail 325 is fixed to the bottom plate 31. The support frame 323 is driven by the third cylinder 322 to change its horizontal position on the short slide rail 325 through the sliding table 324, so that the bump die core assembly 329 is laterally displaced to be inserted into the metal pipe fitting. The right side inner wall of the socket 328 is in sliding contact with the bump hook assemblies 3212. Under the action of the fourth cylinder 327, the socket 328 is pushed to move. Under the sliding contact action between the socket 328 and the bump hook assemblies 3212, a lever force is generated and applied to the metal pipe fitting to punch a limiting bump on the metal pipe fitting. The bump die core assembly 329 is fixedly penetrated through the middle side inside the support frame 323. The left side of the spring 3211 is connected to the right output shaft of the fourth cylinder 327. The right side of the bump rear seat 3210 is in contact with the bump hook assemblies 3212. Under the action of the spring 3211, the bump rear seat 3210 is pressed and contacted against the inner side of the bump hook assemblies 3212. After the bump hook assemblies 3212 generate a lever force for dotting, they are reset to facilitate the entry and exit of the bump die core assembly 329 into and out of the metal pipe fitting and prevent jamming.

[0038] Among them, the bump die core assembly 329 includes a barrel sleeve 3291, a table cover 3292, and a plug post 3293 integrally formed from left to right. The table cover 3292 and the plug post 3293 are in a gradient shape from left to right, and three hook grooves 3294 are circumferentially and equidistantly formed inside the table cover 3292 and the plug post 3293. The table cover 3292 is fixed to the middle side inside the support frame 323, and the support frame 323 plays a role in supporting and positioning the table cover 3292. The structures and sizes of the three bump hook assemblies 3212 are the same, and they are respectively rotatably connected inside the three hook grooves 3294, so that the three bump hook assemblies 3212 respectively rotate the position angles inside the hook grooves 3294 to punch out three evenly distributed limit bumps on the metal pipe fitting. The bump rear seat 3210 is in a T shape, and the right end is in a conical shape. The conical part is in sliding contact with the three bump hook assemblies 3212. Under the action of the spring 3211, the bump rear seat 3210 can reset the bump hook assemblies 3212, and when punching, the bump rear seat 3210 can squeeze the spring 3211 to perform a slight lateral displacement to ensure the punching effect. The bump hook assembly 3212 includes a hook block 32121. A rotating shaft column 32122 is fixedly connected to the right side inside the hook block 32121. The rotating shaft column 32122 is rotatably connected inside the table cover 3292, so that the hook block 32121 forms a lever movement with the rotating shaft column 32122 as the fulcrum. A pointed head 32123 for punching the bump is arranged on the right side outside the hook block 32121. The inner wall on the right side of the socket 328 is inclined outward, and the inclined surface is in sliding connection with the bevel at the top side of the hook block 32121. When the socket 328 moves to the right, it drives the hook block 32121 to press down, so that the hook block 32121 generates an upward lever force on the pointed head 32123 through the action of the rotating shaft column 32122, and then punches the metal pipe fitting through the pointed head 32123 to improve the punching effect.

[0039] Please refer to Figure 3 , Figure 4 and Figure 8, the present invention provides a device for processing limiting bumps on metal pipe fittings. The conduit structure 41 includes a mounting frame 411 whose front bottom side is fixed to the pipe carrier 34, a servo motor 412 fastened to the front side of the top of the mounting frame 411, a cam disc 413 connected to the rear output end of the servo motor 412, a clamping rod 414 rotatably connected to the right side of the cam disc 413, a tension spring 415 arranged on the upper side of the middle part of the rear of the clamping rod 414, a supporting rotating piece 416 connected to the other end of the tension spring 415, a grooved wheel 417 rotatably connected to the middle side of the top of the supporting rotating piece 416, and a cross rod 418 rotatably coaxial with the middle side of the rear of the grooved wheel 417. The bottom of the clamping rod 414 is rotatably connected to the mounting frame 411. Under the action of the servo motor 412, the cam disc 413 rotates and intermittently pushes the clamping rod 414 to the right. After being pushed out, the clamping rod is reset by the pulling force of the tension spring 415, realizing the intermittent engagement between the upper left side of the clamping rod 414 and the grooved wheel 417. The cross rod 418 is arranged on the side of the vertical channel formed between the pipe carrier 34 and the positioning frame 35. The bottom of the supporting rotating piece 416 is fixed to the mounting frame 411. When the clamping rod 414 is disengaged from the grooved wheel 417, the metal pipe fitting located in the cross rod 418 falls under the action of gravity. After falling, another metal pipe fitting above falls into the cross rod 418. At this time, the clamping rod 414 and the grooved wheel 417 are re-engaged to limit the metal pipe fitting falling into the cross rod 418, ensuring that only one metal pipe fitting falls each time.

[0040] Four triangular grooves 4171 are circumferentially and equidistantly arranged on the front side of the outer surface of the grooved wheel 417. The top of the clamping rod 414 has a "7" - shaped structure, and the left side of the "7" - shaped structure of the clamping rod 414 is intermittently inserted and engaged inside the triangular groove 4171 to realize a single 90 - degree rotation of the cross rod 418, ensuring that a single metal pipe fitting falls and is discharged in each action cycle. Moreover, the cross rod 418 has a certain bearing capacity for the metal pipe fitting in contact with it above, so as to disperse the gravity of the metal pipe fitting at the bottommost position when the metal pipe fitting is discharged from the processing position.

[0041] For a device for processing limiting bumps on metal pipe fittings of the present invention, the right loading dot - punching mechanism 6 moves on the long slide rail 4 through the slide block 5 to change the horizontal position, so as to adjust the distance between the left loading dot - punching mechanism 3 and the right loading dot - punching mechanism 6, and perform convex - point processing on metal pipe fittings of different length dimensions. The working principle is as follows:

[0042] First, separation and positioning of pipe fittings by gravity:

[0043] The metal pipes to be punched with limit bumps are neatly arranged and placed in the pipe carrier 34 and positioning frame 35 of the left loading and punching mechanism 3 and the right loading and punching mechanism 6. The metal pipes fall by gravity through the vertical channel formed by the pipe carrier 34 and the positioning frame 35. Utilizing the height difference between the first L-shaped piece 37 and the second L-shaped piece 39, the second L-shaped piece 39 is first supported under the multiple metal pipes by the action of the second cylinder 38. Then, the first cylinder 36 is activated to drive the first L-shaped piece 37 to be inserted above the metal pipe at the bottom, achieving single-tube separation and temporarily storing the separated single pipe in the second L-shaped piece 39. During the single-tube separation process, the guide tube structure 41 distributes the weight of the pipes through the cross rod 418 to prevent the bottom pipes from being compressed and deformed.

[0044] Second, cylinder clamping and coaxial positioning:

[0045] The positioning cylinder 8 drives the pressing plate 9 to press the single metal pipe on the second L-shaped plate 39 into the semicircular groove of the carrier plate 40. The coaxial design of the pressing plate 9 and the semicircular groove of the carrier plate 40 ensures that the axis of the pipe is accurately aligned with the processing position of the protrusion structure 32. When the pressing plate 9 presses the single metal pipe onto the carrier plate 40, the rectangular support block enhances the compressive strength of the carrier plate 40 and prevents positioning deviation.

[0046] Third, the duct structure of material distribution and feeding:

[0047] The servo motor 412 drives the cam 413 to rotate periodically, causing the latching rod 414 to intermittently engage with the four triangular grooves 4171 of the groove wheel 417. Each rotation of the cam 413 triggers the cross rod 418 to rotate every 90 degrees, achieving the drop of the single tube and blocking the transmission of gravity to the upper tubes, thereby dissipating the gravity force on the metal tube at the bottom position.

[0048] Fourth, double cylinder collaborative convex point forming:

[0049] After the single metal pipe is pressed tightly against the pressing sheet 9 and the carrier sheet 40, the third cylinder 322 pushes the support frame 323 to feed laterally along the short slide rail 325, so that the convex mold core assembly 329 is inserted into the pipe. Then the fourth cylinder 327 drives the sleeve 328 to move right, and the inclined surface of the inner wall contacts the top side of the hook block 32121. The fulcrum of the rotating shaft column 32122 forms a lever effect, so that the three groups of prongs 32123 can expand outward synchronously, so that the three groups of prongs 32123 generate a force to form a deep limiting convex point on the pipe wall. After the dotting is completed, the sleeve 328 is driven to retract. After the processing, the spring 3211 pushes the convex point back seat 3210 to reset the hook block 32121 to prevent the mold core from getting stuck.

[0050] Fifth, automatic unloading cycle:

[0051] After processing is completed, the positioning cylinder 8 releases the metal pipe fitting, and the formed metal pipe fitting falls and automatically slides into the collection device along the discharge plate 332. At the same time, when the grooved wheel 417 is triggered to rotate, the cross bar 418 drives the next metal pipe fitting to fall, and the double-station synchronous processing realizes continuous circulation without manual intervention throughout the process.

[0052] The above are only the preferred examples of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A limiting bump processing device for metal pipe fittings, comprising a pedestal (1), characterized in that: A support platform (2) is installed on the top left front side of the pedestal (1), and a left loading dotting mechanism (3) is fastened to the top of the support platform (2). Two long sliding rails (4) are arranged on the top right front side of the pedestal (1), and sliding seats (5) are slidably connected to the tops of the two long sliding rails (4). The top side of the sliding seat (5) is fastened to the right loading dotting mechanism (6). The left loading dotting mechanism (3) and the right loading dotting mechanism (6) have the same structure and size and are symmetrically arranged. A bearing block (7) is fastened to the bottom front side of the left loading dotting mechanism (3). A positioning cylinder (8) is installed on the top right part of the bearing block (7), and a pressing piece (9) is connected to the output shaft at the rear side of the positioning cylinder (8). The left loading dotting mechanism (3) includes a bottom plate (31) whose bottom is fastened to the support platform (2), a bump structure (32) installed in the middle of the top of the bottom plate (31), a vertical plate (33) fixedly connected to the top right rear side of the bottom plate (31), a pipe carrier (34) and a positioning frame (35) arranged on the side of the vertical plate (33) away from the bump structure (32), a first cylinder (36) locked and fixed to the lower front part on the right side of the positioning frame (35), a first L-shaped piece (37) connected to the output shaft at the rear side of the first cylinder (36), a second cylinder (38) locked and fixed to the lower rear part on the left side of the pipe carrier (34), a second L-shaped piece (39) connected to the output shaft at the front side of the second cylinder (38), a carrier piece (40) flush with the bottom side of the second L-shaped piece (39), and a conduit structure (41) installed in the middle and lower part of the pipe carrier (34) and close to the side of the vertical plate (33). The positioning frame (35) is located in front of the pipe carrier (34), and a cavity for loading metal pipe fittings and a vertical channel for the metal pipe fittings to fall are formed between the pipe carrier (34) and the positioning frame (35). The positioning cylinder (8) is located under the first cylinder (36). The rear side of the carrier piece (40) is fastened to the vertical plate (33), and the carrier piece (40) and the pressing piece (9) are at the same horizontal height position.

2. The processing device for the limiting bumps of a metal pipe fitting according to claim 1, wherein: Vertical through grooves are provided in the lower front part of the pipe carrier (34) and the lower rear part of the positioning frame (35) to change the height distance between the first cylinder (36) and the second cylinder (38) so that a height difference is formed between the bottom of the first L-shaped piece (37) and the bottom of the second L-shaped piece (39), and the size of the height difference is between the outer diameter size of one metal pipe fitting and 1.3 times the outer diameter size of the metal pipe fitting.

3. The limiting bump processing device for a metal pipe fitting according to claim 1, characterized in that: A limit frame (311) for limiting the stroke distance of the bump structure (32) is arranged in the middle of the left side of the bottom plate (31). A discharge plate (332) is fastened and connected to the top right front side of the bottom plate (31), and the discharge plate (332) is inclined downward from back to front. A double-headed screw column (331) is arranged through the inside of both the pipe carrier (34) and the positioning frame (35), and the other side of the double-headed screw column (331) is arranged through the inside of the vertical plate (33).

4. The limiting bump processing device for a metal pipe fitting according to claim 1, characterized in that: Semicircular grooves are provided at corresponding positions on the rear side of the tablet (9) and the front side of the carrier sheet (40). The center position of the semicircular groove of the carrier sheet (40) and the axis position of the bumping point of the bump structure (32) are on the same axis. A rectangular support block is provided at the corresponding position of the lower right side of the carrier tube holder (34) and the carrier sheet (40).

5. The limiting bump processing device for a metal pipe fitting according to claim 1, wherein: The bump structure (32) includes a cushion block (321) whose bottom is fastened to the bottom plate (31), a third cylinder (322) locked and fixed above the left side of the cushion block (321), a support frame (323) connected to the rear side of the right output shaft of the third cylinder (322), a slide table (324) fixedly connected to the bottom side of the support frame (323), a short slide rail (325) slidably connected to the bottom of the slide table (324), a vertical plate (326) fixedly connected to the left side of the slide table (324), a fourth cylinder (327) locked and fixed above the left side of the vertical plate (326), a socket (328) connected to the outside of the right output shaft of the fourth cylinder (327), a bump die core assembly (329) slidably connected to the right side inside the socket (328), a bump rear seat (3210) slidably connected to the left side inside the bump die core assembly (329), a spring (3211) provided on the left side of the bump rear seat (3210), and three bump hook assemblies (3212) rotatably penetrating through the right side inside the bump die core assembly (329). The bottom of the short slide rail (325) is fixed to the bottom plate (31). The right side inner wall of the socket (328) is in sliding contact with the bump hook assemblies (3212). The bump die core assembly (329) is fixedly penetrated through the middle side inside the support frame (323). The left side of the spring (3211) is connected to the right output shaft of the fourth cylinder (327). The right side of the bump rear seat (3210) is in contact with the bump hook assemblies (3212).

6. The limiting bump processing device for a metal pipe fitting according to claim 5, characterized in that: The bump die core assembly (329) includes a barrel sleeve (3291), a table cover (3292), and an insertion post (3293) integrally formed from left to right. The table cover (3292) and the insertion post (3293) are in a gradient shape from left to right, and three hook grooves (3294) are circumferentially and equidistantly provided inside the table cover (3292) and the insertion post (3293). The three hook grooves (3294) are respectively connected to the three bump hook assemblies (3212).

7. The limiting bump processing device for a metal pipe fitting according to claim 6, wherein: The three bump hook assemblies (3212) have the same structure and size, and are respectively rotatably connected inside the three hook grooves (3294). The bump rear seat (3210) is in a T shape, and the right end is in a conical shape, and the conical part is in sliding contact with the three bump hook assemblies (3212).

8. The limiting bump processing device for a metal pipe fitting according to claim 7, characterized in that: The convex point hook assembly (3212) includes a hook block (32121). A rotating shaft column (32122) is fixedly connected to the right side inside the hook block (32121). The rotating shaft column (32122) is rotatably connected inside the table cover (3292), enabling the hook block (32121) to form a lever movement with the rotating shaft column (32122) as the fulcrum. A pointed head (32123) for forming convex points is arranged on the right side outside the hook block (32121). The right side inner wall of the socket (328) is inclined outward, and the inclined surface is slidably connected to the beveled corner on the top side of the hook block (32121).

9. The limiting bump processing device for a metal pipe fitting according to claim 1, wherein: The conduit structure (41) includes a mounting frame (411) with its front bottom side fixed to the carrier pipe rack (34), a servo motor (412) fastened to the front side of the top of the mounting frame (411), a convex disk (413) connected to the rear output end of the servo motor (412), a clamping rod (414) rotatably connected to the right side of the convex disk (413), a tension spring (415) arranged on the upper middle side of the rear part of the clamping rod (414), a supporting rotating piece (416) connected to the other end of the tension spring (415), a grooved wheel (417) rotatably connected to the middle side of the top of the supporting rotating piece (416), and a cross rod (418) coaxially rotating with the middle side of the rear part of the grooved wheel (417). The bottom of the clamping rod (414) is rotatably connected to the mounting frame (411). The upper left side of the clamping rod (414) is intermittently engaged with the grooved wheel (417). The bottom of the supporting rotating piece (416) is fixed to the mounting frame (411). The cross rod (418) is arranged on the side of the vertical channel formed between the carrier pipe rack (34) and the positioning frame (35).

10. The positioning bump processing device for a metal pipe fitting according to claim 9, characterized in that: Four triangular grooves (4171) are circumferentially and equidistantly arranged on the front side of the outer surface of the grooved wheel (417). The top of the clamping rod (414) has a "7"-shaped structure, and the left side of the "7"-shaped structure of the clamping rod (414) is intermittently inserted and engaged inside the triangular groove (4171).

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