Metal pipe fitting double-side sealing female equipment

Abstract

The invention discloses double-edge sealing mother equipment for a metal pipe fitting. The double-edge sealing mother equipment comprises a working rack, a fixing plate, a first edge sealing mechanism, a main sliding rail, a main sliding block, a second edge sealing mechanism and a supporting strip. Synchronous operation of edge sealing mechanisms on the two sides is supported, and the coaxiality and symmetry of sealing nuts on the two sides of a metal pipe fitting are guaranteed; vibration feeding, staged air cylinder control and a sliding rail guide assembly are integrated, and continuous material distribution and precise positioning of the metal pipe fittings are achieved; the guiding and pushing assembly and the inserting structure cooperate to finish accurate embedding of the nut, and surface damage is avoided; the sealing nut structure adopts the design of a multi-stage pressing block and a reset spring, and is combined with a guide groove and a staggered mold layout, so that efficient compression packaging of the side edge of the metal pipe fitting is realized, and the machining requirements of pipe fittings in different shapes are met; according to the invention, the problems of low efficiency, poor symmetry and insufficient adaptability in the traditional process are solved, and the automation level and the processing quality of the mother sealing process are obviously improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal pipe processing equipment, and particularly to a metal pipe fitting double-sided sealing nut equipment. Background Art

[0002] The process of sealing nuts for metal pipe fittings is a key link in industrial manufacturing and is widely used in scenarios such as pipe connection and sealing in automobiles, buildings, and mechanical equipment. This process requires inserting nuts at the ends or sides of the pipe fittings to achieve subsequent threaded assembly or structural reinforcement.

[0003] Currently, Chinese Patent Application No.: CN202411361833.0 discloses a metal punching and edge-sealing device, including a processing table, and further including: a punching assembly for punching metal pipe fittings, arranged on the top surface of the processing table; during the punching process, the second support section and the first support section are always supported by the elastic support member against the inner top and bottom surfaces of the metal pipe fitting, and during the process of bending the edge-sealing plate, the second support section serves as the support point, enabling the two edge-sealing plates to bend with the second support section as the support point, and after the two edge-sealing plates are bent with the second support section as the support point, they are in parallel contact with the surface of the second support section.

[0004] However, the traditional processing techniques of the existing technology mainly rely on manual operations. The operator needs to manually position the pipe fitting, insert the nut, and perform stamping and edge-sealing. This method is not only inefficient but also difficult to ensure the coaxiality of double-sided sealing nuts, resulting in seal failure or assembly deviation; in addition, although some of the existing automated equipment replaces manual operations, most of the equipment often adopts a fixed structure, which is inconvenient to adapt to the processing requirements of different pipe diameters, and lacks modular design, resulting in poor flexibility of the equipment. The nut insertion link mostly relies on manual adjustment, which is likely to cause scratches on the surface of the pipe fitting or positioning deviation; at the same time, the traditional sealing nut die structure is single and is not easy to meet the processing requirements of high-precision or special-shaped pipe fittings, restricting the application scope of the process. Summary of the Invention

[0005] The purpose of the present invention is to provide a metal pipe fitting double-sided sealing nut equipment 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 double-sided sealing mother device for metal pipe fittings, including a workbench frame, a fixing plate, a first edge-sealing mechanism, a main slide rail, a main slider, a second edge-sealing mechanism and a support bar. The left side of the top of the workbench frame is fixedly connected with a fixing plate, and the first edge-sealing mechanism is installed on the top side of the fixing plate. The part of the top of the workbench frame on the right side of the fixing plate is provided with two front and rear main slide rails. The top sides of the two main slide rails are both connected to the second edge-sealing mechanism through main sliders. Support bars are arranged at the rear sides of the two main slide rails. The bottom of the support bar is fixed to the workbench frame, and the top side of the support bar contacts the second edge-sealing mechanism and is locked and fixed by bolts. The first edge-sealing mechanism and the second edge-sealing mechanism are at the same horizontal height position, and the structures and sizes of the first edge-sealing mechanism and the second edge-sealing mechanism are the same and are arranged in a left-right symmetric shape. The second edge-sealing mechanism includes a bottom plate connected to the main slider and the support bar at the bottom side, a cushion rack fixed to the right rear side of the top of the bottom plate, a blanking structure locked and fixed to the left front side of the top of the cushion rack, a vibrating plate arranged at the rear side of the top of the cushion rack for loading and discharging nuts, a nut channel rack arranged below the nut discharging position of the vibrating plate for the nuts to be arranged and fall, a guiding structure arranged at the bottom side of the channel of the nut channel rack for pushing out a single nut, an inserting structure arranged at the front right side of the guiding structure for inserting the nut into the metal pipe fitting, a pushing pipe structure fastened to the left rear side of the top of the bottom plate, a sealing mother structure installed at the front side of the top of the bottom plate for compressing and sealing the metal pipe fitting with a nut inside the side, and a positioning rack fastened to the left front side of the top of the bottom plate. The bottom sides of the nut channel rack, the guiding structure and the inserting structure are all connected to the cushion rack. The pushing pipe structure is located behind the positioning rack and corresponds to it in position.

[0007] Preferably, the distance between the bottom side of the channel of the nut channel rack and the top side of the guiding structure is not greater than the circumscribed circle diameter of a single nut. When the pushing pipe structure works to the most front side position, a columnar hollow groove matching the diameter of the metal pipe fitting is formed between the pushing pipe structure and the positioning rack, and the axis of the columnar hollow groove coincides with the axis of the compression and sealing position of the sealing mother structure.

[0008] Preferably, the blanking structure includes a vertical plate fastened to the right side of the bottom of the cushion rack. The front and rear sides of the left part of the vertical plate are respectively provided with a front rack and a rear rack. Loading bins for placing metal pipe fittings and strip-shaped channels for the single longitudinal arrangement of metal pipe fittings are respectively formed between the front rack and the rear rack at the upper and lower sides. The left front side of the front rack is fastened with a lower air cylinder, and the output shaft of the lower air cylinder at the rear side is connected with an L-shaped piece. The middle lower side of the front part of the front rack is fastened with a front air cylinder, and the middle side of the rear part of the rear rack is fastened with a rear air cylinder. The output shafts of the rear side of the front air cylinder and the front side of the rear air cylinder are both connected with chucks, and arc-shaped grooves are arranged on one side of the two chucks close to the strip-shaped channel. The lower air cylinder is located at the lower left side of the front air cylinder, and the rear air cylinder is located above the rear side of the front air cylinder. The chuck on the rear air cylinder and the chuck on the front air cylinder have a height difference, and the height difference is the diameter of a single metal pipe fitting.

[0009] Preferably, a sunken rectangular groove is formed in the front side of the bottom of the front frame, and a clamping block is rotatably connected inside the rectangular groove, and the front side of the clamping block is inclined.

[0010] Preferably, the guiding structure includes a first support seat with its bottom fastened to the cushion frame. A first air cylinder is fastened to the upper middle part at the rear side of the first support seat. The front output shaft of the first air cylinder is connected to a bearing block. The middle part of the bottom of the bearing block is slidably connected to a first sliding rail through a first slider, and the bottom of the first sliding rail is fastened to the cushion frame. A strip-shaped block is fastened to the middle part of the top of the bearing block. A nut seat is rotatably connected to the lower inner part of the front of the strip-shaped block, and the upper middle part of the rear of the nut seat is connected to the upper inner part of the front of the strip-shaped block through a spring. A groove is horizontally formed in the middle part of the top of the nut seat, and a nut groove is formed by downward opening in the middle part of the inner side of the groove. The position of the nut groove corresponds to the channel position of the nut channel frame.

[0011] Preferably, the inserting structure includes a second support seat with its bottom fastened to the cushion frame. A second main air cylinder is fastened to the middle part on the right side of the second support seat. The left output shaft of the second main air cylinder is connected to a shifting frame. The bottom side of the shifting frame is slidably connected to a second sliding rail through a second slider, and the bottom of the second sliding rail is fastened to the cushion frame. A second sub-air cylinder is fastened to the right side inside the shifting frame. The left output shaft of the second sub-air cylinder is connected to a pushing block. A conical column is arranged at the lower middle part on the left side of the pushing block, and the right side of the top of the pushing block is fastened to a sliding sleeve. A guiding frame is slidably penetrated through the front and rear sides inside the sliding sleeve, and the guiding frame is fastened to the top side of the shifting frame. A round opening is formed in the middle part on the left side of the shifting frame, and the conical column is penetrated and arranged inside the round opening.

[0012] Preferably, the pushing tube structure includes a third support seat with its bottom fastened to the bottom plate. A third air cylinder is fastened to the rear side of the third support seat, and the front output shaft of the third air cylinder is connected to a rectangular block. The bottom of the rectangular block is slidably connected to a third sliding rail through a third slider, and the bottom of the third sliding rail is fastened to the bottom plate. A pushing tube seat is installed on the top side of the rectangular block. Support pieces are arranged on both the left and right sides of the pushing tube seat. The front bottom sides of the two support pieces form extension sections forward.

[0013] Preferably, the bushing structure includes a fourth support seat whose bottom is fastened to the bottom plate. A fourth cylinder is installed on the right side of the fourth support seat. The left output shaft of the fourth cylinder is connected to a vertical frame. The front and rear sides of the bottom of the vertical frame are both slidably connected to a fourth slide rail through a fourth slider, and the bottoms of the two fourth slide rails are both fastened to the bottom plate. An oil cylinder is fastened to the left side of the top of the vertical frame. The bottom output shaft of the oil cylinder is connected to a carriage. The front and rear sides of the inside of the carriage both penetrate and slide with a column, and the two columns are respectively fixed to the front and rear sides of the inside of the vertical frame. The left side of the carriage is slidably connected to a bushing side mold. The rear side inside the bushing side mold is connected to a bushing inner mold. A bushing mold core and a pressing block are rotatably connected inside the bushing inner mold. Six bushing mold cores and six pressing blocks are provided, and the six bushing mold cores and the six pressing blocks are slidably arranged in a staggered manner and distributed in a circular shape. The right sides of the six bushing mold cores are all connected to the vertical frame.

[0014] Preferably, a roller is rotatably connected to the front part of the right side of the bushing side mold, and the roller is inserted and slid inside the left side of the carriage. A return spring for driving the pressing block to slide outward is arranged at the connection of each of the six pressing blocks and the bushing mold core.

[0015] Preferably, six guide grooves are equidistantly arranged on the inner side of the bushing inner mold, and the positions of the six guide grooves correspond to the positions of the six pressing blocks respectively. Convex blocks are arranged on the inner sides of the left parts of the six bushing mold cores, and the six convex blocks surround to form a circular structure.

[0016] Preferably, the side of the pressing block close to the bushing inner mold is arc-shaped.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] Through the symmetrically arranged first edge-sealing mechanism and second edge-sealing mechanism, combined with the sliding adjustment function of the main slide rail and the main slider, the present invention realizes the double-sided synchronous bushing of metal pipe fittings. The synchronous operation of the two mechanisms eliminates the coaxiality deviation caused by step-by-step processing in the traditional process, significantly improves the processing efficiency and product consistency, ensures the high-precision processing of metal pipe fittings, and adopts a modular design for the blanking structure, guiding structure and inserting structure. Through the linkage control of multiple cylinders and the guiding of the slide rail, the automatic feeding of metal pipe fittings, the precise positioning of nuts and the stable insertion are realized. The functions of feeding, positioning and edge-sealing are integrated into one, realizing automated continuous operation, improving the processing efficiency and reducing manual intervention.

[0019] Through the staggered layout of six pressing blocks and the bushing mold core in the bushing structure of the present invention, combined with the guide groove and the return spring, the bushing requirements of metal pipe fittings with different shapes can be adapted. And through the design of the support piece extension section of the push tube structure and the roller of the bushing side mold, the stability of the pipe fitting pushing and the mold movement is further ensured, avoiding processing deformation or demolding failure, and significantly improving the equipment compatibility and molding quality.

[0020] The distance between the bottom side of the channel of the nut channel frame of the present invention and the top side of the guiding structure is not greater than the circumscribed circle diameter of a single nut, which restricts the falling spacing of the nuts, avoids the jamming of multiple nuts, and ensures that the guiding structure only pushes a single nut to the designated position each time. When the pushing tube structure works to the most forward position, a columnar hollow groove matching the diameter of the metal pipe fitting is formed between the pushing tube structure and the positioning frame, and the axis of the columnar hollow groove coincides with the axis of the compression edge sealing position of the sealing nut structure. Through precise alignment design, it is ensured that the force is evenly distributed when inserting the nut into the inner edge sealing of the metal pipe fitting, avoiding the unsealing or deformation of the sealing nut caused by skewing.

[0021] The chuck on the rear cylinder of the present invention and the chuck on the front cylinder have a height difference, and the height difference is the diameter of a single metal pipe fitting, so as to control the falling of the metal pipe fitting in stages, ensure that only a single metal pipe fitting is released to the processing position each time, and improve the feeding accuracy. A concave rectangular groove is provided on the front side of the bottom of the front frame, and a chuck is rotatably connected inside the rectangular groove. The front side of the chuck is inclined, so as to discharge the processed metal pipe fitting after the processing of the metal pipe fitting is completed and before loading the next metal pipe fitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the present invention;

[0023] Figure 2 is a schematic structural diagram of the second edge sealing mechanism of the present invention;

[0024] Figure 3 is the present invention Figure 2 schematic structural diagram after removing the blanking structure;

[0025] Figure 4 is a schematic structural diagram of the blanking structure of the present invention;

[0026] Figure 5 is a schematic structural diagram of the guiding structure of the present invention;

[0027] Figure 6 is a schematic structural diagram of the insertion structure of the present invention;

[0028] Figure 7 is a schematic structural diagram of the pushing tube structure of the present invention;

[0029] Figure 8 is a schematic structural diagram of the sealing nut structure of the present invention;

[0030] Figure 9 is the present invention Figure 8 partial enlarged structural view of part A in the present invention.

[0031] In the figure: workbench frame - 1, fixed plate - 2, first edge - sealing mechanism - 3, main slide rail - 4, main slider - 5, second edge - sealing mechanism - 6, support bar - 7, bottom plate - 61, cushion rack - 62, blanking structure - 63, vibrating disk - 64, nut channel rack - 65, guiding structure - 66, inserting structure - 67, push - tube structure - 68, sealing nut structure - 69, positioning rack - 70, vertical plate - 631, front rack - 632, rear rack - 633, lower air cylinder - 634, L - shaped piece - 635, front air cylinder - 636, rear air cylinder - 637, chuck - 638, fixture block - 6321, first support - 661, first air cylinder - 662, bearing block - 663, first slider - 664, first slide rail - 665, strip - shaped block - 666, nut seat - 667, groove - 6671, nut groove - 6672, second support - 671, second main air cylinder - 672, shifting rack - 673, second slider - 674, second slide rail - 675, second auxiliary air cylinder - 676, push block - 677, conical column - 678, sliding sleeve - 679, guiding rack - 6710, third support - 681, third air cylinder - 682, rectangular block - 683, third slider - 684, third slide rail - 685, push - tube seat - 686, support piece - 687, fourth support - 691, fourth air cylinder - 692, vertical rack - 693, fourth slider - 694, fourth slide rail - 695, oil cylinder - 696, sliding rack - 697, column - 698, edge - sealing nut side die - 699, edge - sealing nut inner die - 6910, edge - sealing nut die core - 6911, pressing block - 6912, roller - 6991, guiding groove - 69101, convex block - 69111. Detailed implementation mode

[0032] In order to further explain the technical solution of the present invention, the following will be elaborated in detail through specific embodiments.

[0033] Please refer to Figure 1, the present invention provides a double-sided sealing mother equipment for metal pipe fittings, including a workbench frame 1, a fixed plate 2, a first edge-sealing mechanism 3, a main slide rail 4, a main slider 5, a second edge-sealing mechanism 6 and a support bar 7. The left side of the top of the workbench frame 1 is fixedly connected with the fixed plate 2, and the first edge-sealing mechanism 3 is installed on the top side of the fixed plate 2. The part of the top of the workbench frame 1 on the right side of the fixed plate 2 is provided with two front and rear main slide rails 4. The top sides of the two main slide rails 4 are both connected with the second edge-sealing mechanism 6 through the main slider 5. The sliding fit between the main slide rail 4 and the main slider 5 enables the second edge-sealing mechanism 6 to flexibly adjust its position to adapt to the processing requirements of metal pipe fittings of different sizes. Support bars 7 are provided on the rear sides of the two main slide rails 4. The bottom of the support bar 7 is fixed to the workbench frame 1, and the top side of the support bar 7 contacts the second edge-sealing mechanism 6 and is locked and fixed by bolts. The support bar 7 provides additional support through bolt locking to prevent the second edge-sealing mechanism 6 from shifting due to force during operation, enhancing the overall rigidity of the equipment. The first edge-sealing mechanism 3 and the second edge-sealing mechanism 6 are at the same horizontal height position, and the structures and sizes of the first edge-sealing mechanism 3 and the second edge-sealing mechanism 6 are the same and are arranged symmetrically left and right, ensuring that the double-sided sealing mother operations on both sides of the metal pipe fitting are carried out synchronously, improving the processing efficiency and ensuring the symmetry and consistency of the double-sided sealing mother.

[0034] Please refer to Figure 1 , Figure 2 and Figure 3 , the present invention provides a double-sided sealing mother equipment for metal pipe fittings. The second edge-sealing mechanism 6 includes a bottom plate 61 connected to the main slider 5 and the support bar 7 at the bottom side, a cushion rack 62 fixed to the top right rear side of the bottom plate 61, a blanking structure 63 locked and fixed to the top left front side of the cushion rack 62, a vibrating plate 64 arranged on the top rear side of the cushion rack 62 for loading and discharging nuts, a nut channel rack 65 arranged below the nut discharging position of the vibrating plate 64 for the nuts to be arranged and fall, a guiding structure 66 arranged at the bottom side of the channel of the nut channel rack 65 for pushing out a single nut, an inserting structure 67 arranged at the front right side of the guiding structure 66 for inserting the nut into the metal pipe fitting, a push pipe structure 68 fastened to the top left rear side of the bottom plate 61, a sealing mother structure 69 installed on the top front side of the bottom plate 61 for compressing and sealing the metal pipe fitting with nuts inside the side, and a positioning frame 70 fastened to the top left front side of the bottom plate 61. The bottom sides of the nut channel rack 65, the guiding structure 66 and the inserting structure 67 are all connected to the cushion rack 62. The push pipe structure 68 is located behind the positioning frame 70 and corresponds to it in position. The modular design integrates functions of feeding, positioning and edge-sealing into one, realizing automatic continuous operation, improving the processing efficiency and reducing manual intervention.

[0035] Among them, the distance between the bottom side of the channel of the nut channel holder 65 and the top side of the guiding structure 66 is not greater than the circumscribed circle diameter of a single nut, which restricts the falling spacing of the nuts, avoids jamming of multiple nuts, and ensures that the guiding structure 66 only pushes a single nut to the designated position each time. When the push tube structure 68 works to the most forward position, a columnar hollow groove matching the diameter of the metal pipe fitting is formed between the push tube structure 68 and the positioning frame 70, and the axis of the columnar hollow groove coincides with the axis of the compression edge sealing position of the sealing nut structure 69. Through precise alignment design, it is ensured that the force is evenly distributed when inserting the nut into the inner edge sealing of the metal pipe fitting, avoiding unsealed or deformed sealing nuts caused by skew.

[0036] Please refer to Figures 2 - 9 , the present invention provides a metal pipe fitting double-sided sealing nut device. The blanking structure 63 includes a vertical plate 631 whose bottom right side is fastened to the cushion rack 62. The front and rear sides of the left part of the vertical plate 631 are respectively provided with a front rack 632 and a rear rack 633. Loading bins for placing metal pipe fittings and strip-shaped channels for arranging the metal pipe fittings in a single longitudinal row are respectively formed on the upper and lower sides between the front rack 632 and the rear rack 633, realizing batch loading and orderly single-column conveying of the metal pipe fittings, avoiding material jamming caused by pipe fitting stacking. The lower cylinder 634 is fastened to the front left side of the front rack 632, and the output shaft of the lower cylinder 634 at the rear is connected to an L-shaped piece 635 to drive the L-shaped piece 635. After pushing the L-shaped piece 635 backward, a support is formed at the bottom of the metal pipe fitting. The front cylinder 636 is fastened to the middle and lower side of the front part of the front rack 632, and the rear cylinder 637 is fastened to the middle side of the rear part of the rear rack 633. The output shafts at the rear of the front cylinder 636 and the output shafts at the front of the rear cylinder 637 are both connected to chucks 638, and arc-shaped grooves are provided on one side of the two chucks 638 close to the strip-shaped channel. The feeding and positioning of the metal pipe fittings are controlled by cylinder linkage. The arc-shaped grooves are adapted to the outer diameter of the pipe fittings to prevent surface damage caused by sliding friction. The lower cylinder 634 is located at the lower left of the front cylinder 636, and the rear cylinder 637 is located above the rear of the front cylinder 636. The chuck 638 on the rear cylinder 637 and the chuck 638 on the front cylinder 636 have a height difference, and the height difference is the diameter of a single metal pipe fitting, so as to control the falling of the metal pipe fittings in stages, ensure that only a single metal pipe fitting is released to the processing position each time, and improve the feeding accuracy. A concave rectangular groove is opened on the front side of the bottom of the front rack 632, and a clamping block 6321 is rotatably connected inside the rectangular groove. The front side of the clamping block 6321 is inclined, so as to discharge the processed metal pipe fitting after the metal pipe fitting is processed and before loading the next metal pipe fitting.

[0037] Among them, the guide structure 66 includes a first support 661 whose bottom is fastened to the support frame 62, a first cylinder 662 is fastened to the middle and upper part of the rear side of the first support 661, and the front output shaft of the first cylinder 662 is connected to a bearing block 663, and the middle side of the bottom of the bearing block 663 is slidably connected to the first slide rail 665 through a first slider 664, and the bottom of the first slide rail 665 is fastened to the support frame 62, and the first cylinder 662 drives the bearing block 663 to move on the first slide rail 665 through the first slider 664, thereby improving the linear motion accuracy of the bearing block 663 and ensuring the stability of the nut pushing path. A strip block 666 is fastened to the middle side of the top of the bearing block 663, and a nut is rotatably connected to the inner bottom of the front of the strip block 666 The nut seat 667 is provided with a spring, and the upper middle side of the rear portion of the nut seat 667 is connected to the upper inner portion of the front portion of the strip block 666. A groove 6671 is horizontally provided on the middle side of the top of the nut seat 667, and a nut groove 6672 is downwardly provided in the middle portion of the inner side of the groove 6671. The position of the nut groove 6672 corresponds to the channel position of the nut channel rack 65, so that the nut above the groove 6671 and the inside of the nut groove 6672 can be passed through the insertion structure 67. After passing through the inside of the nut, the downward squeezing force of the nut seat 667 by the insertion structure 67 causes the nut seat 667 to rotate forward and downward to disengage the nut from the nut groove 6672, so that after the nut is removed, it is convenient to push it to the inside of the metal pipe through the insertion structure 67.

[0038] Among them, the plug-in structure 67 includes a second support 671 with the bottom fastened to the support frame 62, a second main cylinder 672 is fastened to the middle of the right side of the second support 671, and the left output shaft of the second main cylinder 672 is connected to the shift frame 673, the bottom side of the shift frame 673 is slidably connected to the second slide rail 675 through the second slider 674, and the bottom of the second slide rail 675 is fastened to the support frame 62, a second auxiliary cylinder 676 is fastened to the right side of the inside of the shift frame 673, and the left output shaft of the second auxiliary cylinder 676 is connected to the push block 677, a tapered column 678 is provided on the lower middle part of the left side of the push block 677, and the top right side of the push block 677 is fastened to the sliding sleeve 679, and the dual-cylinder cooperative control The conical column 678 is controlled by a step-by-step action. First, the second auxiliary cylinder 676 drives the conical column 678 to disengage the nut from the nut groove 6672 and put it on the conical column 678. Then, the second main cylinder 672 is used to insert the conical column 678 with the nut into the metal pipe to ensure that the nut is accurately embedded in the inner wall of the metal pipe. A circular opening is provided in the middle of the left side of the shift frame 673, and the conical column 678 is arranged through the inner side of the circular opening. A guide frame 6710 is sliding through the front and rear sides of the sliding sleeve 679, and the guide frame 6710 is fastened to the top side of the shift frame 673. The guide frame 6710 limits the moving trajectory of the push block 677 to prevent lateral deviation and improve the insertion stability.

[0039] Among them, the push tube structure 68 includes a third support 681 whose bottom is fastened to the bottom plate 61. A third cylinder 682 is fastened to the rear side of the third support 681. The output shaft of the third cylinder 682 is connected to a rectangular block 683 at the front side. The bottom of the rectangular block 683 is slidably connected to a third slide rail 685 through a third slider 684. The bottom of the third slide rail 685 is fastened to the bottom plate 61. A push tube seat 686 is installed on the top side of the rectangular block 683. By driving the rectangular block 683 by the third cylinder 682 and guiding it through the third slide rail 685, it is ensured that the push tube seat 686 linearly pushes the metal pipe fitting. Support pieces 687 are arranged on both the left and right sides of the push tube seat 686. The front bottom sides of the two support pieces 687 form extension sections forward, and the extension sections expand the contact area with the metal pipe fitting to prevent the metal pipe fitting from slipping off during pushing.

[0040] Among them, the seal nut structure 69 includes a fourth support 691 whose bottom is fastened to the bottom plate 61. A fourth cylinder 692 is installed on the right side of the fourth support 691. The output shaft of the fourth cylinder 692 is connected to a vertical frame 693 at the left side. The front and rear sides of the bottom of the vertical frame 693 are slidably connected to fourth slide rails 695 through fourth sliders 694. The bottoms of the two fourth slide rails 695 are both fastened to the bottom plate 61. An oil cylinder 696 is fastened to the left side of the top of the vertical frame 693. The output shaft of the bottom of the oil cylinder 696 is connected to a carriage 697. Columns 698 penetrate and slide through the front and rear sides inside the carriage 697. The two columns 698 are respectively fixed to the front and rear sides inside the vertical frame 693. A seal nut side die 699 is slidably connected to the left side of the carriage 697. A seal nut inner die 6910 is connected to the rear side inside the seal nut side die 699. A seal nut die core 6911 and a pressing block 6912 are rotatably connected inside the seal nut inner die 6910. The right sides of the six seal nut die cores 6911 are all connected to the vertical frame 693. By driving the vertical frame 693 to move horizontally by the fourth cylinder 692, after the metal pipe fitting is positioned, the seal nut side die 699, the seal nut inner die 6910, the seal nut die core 6911 and the pressing block 6912 are driven to move, so that the side of the metal pipe fitting is located inside the seal nut die core 6911. Then, the oil cylinder 696 drives the carriage 697 to move downward to drive the seal nut side die 699 and the seal nut inner die 6910 to rotate on the surface of the seal nut die core 6911, thereby driving the pressing block 6912 to move inward, pressing the side of the metal pipe fitting against the nut inside, and completing the processing of sealing the nut on the side of the metal pipe fitting. Six seal nut die cores 6911 and six pressing blocks 6912 are provided. The six seal nut die cores 6911 and the six pressing blocks 6912 are slidably arranged in a staggered manner in pairs and are circularly distributed, so as to compress the seal nut part on the side of the metal pipe fitting by the displacement actions of the six pressing blocks 6912 to form a hexagon.

[0041] Among them, one side of the briquette 6912 close to the inner die 6910 of the sealing nut is arc-shaped. A roller 6991 is rotatably connected to the front part of the right side of the side die 699 of the sealing nut, and the roller 6991 is inserted and slides inside the left side of the carriage 697, so as to drive the roller 6991 to move its position inside through the carriage 697, enabling the side die 699 of the sealing nut and the inner die 6910 of the sealing nut to rotate around the surface of the sealing nut core 6911 as a fulcrum. A return spring for driving the briquette 6912 to slide outward is arranged at the connection of each of the six briquettes 6912 and the sealing nut core 6911. The staggered structure cooperates with the return spring, enabling the briquette 6912 to automatically separate from the metal pipe fitting after edge sealing, reducing the risk of adhesion. Six guiding grooves 69101 are equidistantly arranged inside the inner side of the inner die 6910 of the sealing nut, and the positions of the six guiding grooves 69101 correspond to the positions of the six briquettes 6912 respectively, so as to guide the briquette 6912 to move along a preset path through the guiding grooves 69101. Convex blocks 69111 are arranged on the inner sides of the left parts of the six sealing nut cores 6911, and the six convex blocks 69111 surround to form a circular structure. By wrapping the surface of the metal pipe fitting near the edge-sealed position with the six convex blocks 69111, the support and positioning effect on the metal pipe fitting is improved, ensuring the quality of metal pipe fitting processing.

[0042] The working principle of a bilateral sealing nut device for metal pipe fittings of the present invention is as follows:

[0043] First, the first edge-sealing mechanism 3 and the second edge-sealing mechanism 6 are started synchronously. Metal pipe fittings are batch-placed in the loading bin formed by the front frame 632 and the rear frame 633 of the blanking structure 63. The metal pipe fittings are arranged in a single row for blanking through the strip-shaped channel between the front frame 632 and the rear frame 633. The lower air cylinder 634 drives the L-shaped piece 635 to move backward to form a support at the bottom of the metal pipe fitting located at the bottommost side. Then, the front air cylinder 636 and the rear air cylinder 637 respectively drive the chuck 638 with an arc-shaped groove, and single pipe fittings are released to the processing position in stages by controlling the height difference. Under the action of the front air cylinder 636, the chuck 638 presses and positions the metal pipe fitting above the L-shaped piece 635 to perform the processing step of inserting the nut. Under the action of the rear air cylinder 637, the metal pipe fitting above the metal pipe fitting to be processed with the nut inserted is pressed and positioned;

[0044] Second, the vibrating disk 64 orderly conveys the nuts to the nut channel frame 65, enabling the lowermost nut to fall into the nut groove 6672 of the nut seat 667. The first air cylinder 662 of the guiding structure 66 drives the bearing block 663 to move forward along the first slide rail 665, so that the strip-shaped block 666 and the nut seat 667 drive the nut to move to the side of the tapered column 678 of the inserting structure 67. During the forward movement of the strip-shaped block 666, the distance between the bottom side of the channel of the nut channel frame 65 and the strip-shaped block 666 does not allow another nut to move downward;

[0045] Thirdly, the second sub-cylinder 676 of the cartridge structure 67 drives the push block 677 and the tapered column 678 to move leftward, eject the nut from the nut groove 6672 and socket it on the tapered column 678. Subsequently, the second main cylinder 672 drives the displacement frame 673 to move leftward along the second slide rail 675, and inserts the tapered column 678 with the nut into the inner wall of the metal pipe fitting positioned at the rear side of the front cylinder 636. At this time, the nut seat 667 resets to reload a new nut. After nuts are inserted into both sides of the metal pipe fitting, the front cylinder 636 and the lower cylinder 634 reset, so that the metal pipe fitting with the inserted nut falls on the support piece 687 of the push pipe structure 68. Then, the front cylinder 636 is driven to move the L-shaped piece 635 backward. After the L-shaped piece 635 moves backward in place, the rear cylinder 637 is driven to reset to move the metal pipe fitting downward, and it falls on the L-shaped piece 635. Then, the front cylinder 636 and the rear cylinder 637 are driven to position the two metal pipe fittings, thus forming a cyclic working process;

[0046] Fourthly, after the metal pipe fitting with the inserted nut falls on the support piece 687 of the push pipe structure 68, the third cylinder 682 drives the push pipe seat 686 to push forward along the third slide rail 685, and pushes the metal pipe fitting onto the positioning frame 70. The metal pipe fitting is positioned by the positioning frame 70, the push pipe seat 686 and the support piece 687 to be accurately limited at the sealing nut station;

[0047] Fifthly, the fourth cylinder 692 of the sealing nut structure 69 drives the vertical frame 693 to move leftward along the fourth slide rail 695, so that the sealing nut die core 6911 wraps around the side of the metal pipe fitting. Then, the oil cylinder 696 drives the sliding frame 697 to press down, driving the sealing nut side die 699 and the sealing nut inner die 6910 to rotate, forcing the six pressing blocks 6912 to compress the metal pipe fitting inward along the guide groove 69101, and compressing the part with the inserted nut on the side of the metal pipe fitting to form a hexagonal sealing nut structure. Then, the oil cylinder 696 is driven to reset, and the pressing blocks 6912 automatically reset after sealing through the reset spring to avoid adhesion. Then, the fourth cylinder 692 is driven to reset to separate the sealing nut die core 6911 from the side of the metal pipe fitting;

[0048] Sixthly, the third cylinder 682 is driven to reset. The third cylinder 682 drives the push pipe seat 686 to move backward, so that the processed metal pipe fitting disengages from the rear side of the positioning frame 70. During the backward movement of the metal pipe fitting, it contacts the clamping block 6321. Under the limiting action of the clamping block 6321, the metal pipe fitting disengages from the support piece 687 to be discharged for collection. After the processed metal pipe fitting is discharged, the support piece 687 resets to below the strip-shaped channel between the front frame 632 and the rear frame 633 to push and process the next metal pipe fitting.

[0049] 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 within the protection scope of the present invention.

Claims

1. A bilateral sealing mother device for metal pipe fittings, comprising a workbench frame (1), characterized in that: On the left side of the top of the workbench frame (1), there is a fixed connection with a fixed plate (2). On the top side of the fixed plate (2), a first edge-sealing mechanism (3) is installed. On the top of the workbench frame (1), in the part on the right side of the fixed plate (2), there are two front and rear main slide rails (4). On the top sides of the two main slide rails (4), they are both connected to a second edge-sealing mechanism (6) through main sliders (5). On the rear sides of the two main slide rails (4), there are support bars (7). The bottom of the support bars (7) is fixed to the workbench frame (1), and the top side of the support bars (7) is in contact with the second edge-sealing mechanism (6) and is locked and fixed by bolts. The first edge-sealing mechanism (3) and the second edge-sealing mechanism (6) are at the same horizontal height position, and the structures and sizes of the first edge-sealing mechanism (3) and the second edge-sealing mechanism (6) are the same and are arranged symmetrically left and right. The second edge-sealing mechanism (6) includes a bottom plate (61) connected to the main slider (5) and the support bar (7) at the bottom side, a cushion rack (62) fixed to the top right rear side of the bottom plate (61), a blanking structure (63) locked and fixed to the top left front side of the cushion rack (62), a vibrating plate (64) arranged on the top rear side of the cushion rack (62) for loading and discharging nuts, a nut channel rack (65) arranged below the nut discharging position of the vibrating plate (64) for the nuts to be arranged and fall, a guiding structure (66) arranged at the bottom side of the channel of the nut channel rack (65) for pushing out a single nut, an inserting structure (67) arranged in the front part on the right side of the guiding structure (66) for inserting the nut into the metal pipe fitting, a pushing pipe structure (68) fastened to the top left rear side of the bottom plate (61), a nut-sealing structure (69) installed on the top front side of the bottom plate (61) for compressing and edge-sealing the metal pipe fitting with a nut inside its side, and a positioning rack (70) fastened to the top left front side of the bottom plate (61). The bottom sides of the nut channel rack (65), the guiding structure (66), and the inserting structure (67) are all connected to the cushion rack (62). The pushing pipe structure (68) is located behind the positioning rack (70) and is in corresponding position.

2. The bilateral sealing mother equipment for metal pipe fittings according to claim 1, characterized in that: The distance between the bottom side of the channel of the nut channel rack (65) and the top side of the guiding structure (66) is not greater than the circumscribed circle diameter of a single nut. When the pushing pipe structure (68) works to the most forward position, a columnar hollow groove matching the diameter of the metal pipe fitting is formed between it and the positioning rack (70), and the axis of the columnar hollow groove coincides with the axis of the nut-sealing structure (69) at the compressing and edge-sealing position.

3. The bilateral sealing mother equipment for metal pipe fittings according to claim 1, characterized in that: The blanking structure (63) includes a vertical plate (631) with its right bottom side fastened to the cushion rack (62). On the front and rear sides of the left part of the vertical plate (631), a front rack (632) and a rear rack (633) are respectively arranged. Between the front rack (632) and the rear rack (633), a loading bin for placing metal pipe fittings and a strip-shaped channel for arranging metal pipe fittings longitudinally one by one are respectively formed on the upper and lower sides. On the left front side of the front part of the front rack (632), a lower air cylinder (634) is fastened, and the output shaft of the lower air cylinder (634) at the rear side is connected with an L-shaped piece (635). On the middle and lower side of the front part of the front rack (632), a front air cylinder (636) is fastened, and on the middle side of the rear part of the rear rack (633), a rear air cylinder (637) is fastened. The output shafts of the front air cylinder (636) at the rear side and the rear air cylinder (637) at the front side are both connected with a chuck (638), and arc-shaped grooves are arranged on the sides of the two chucks (638) close to the strip-shaped channel. The lower air cylinder (634) is located at the lower left side of the front air cylinder (636), and the rear air cylinder (637) is located above the rear side of the front air cylinder (636). The chuck (638) on the rear air cylinder (637) and the chuck (638) on the front air cylinder (636) have a height difference, and the height difference is the diameter of a single metal pipe fitting.

4. The bilateral sealing mother equipment for metal pipe fittings according to claim 3, characterized in that: On the front side of the bottom of the front rack (632), a sunken rectangular groove is formed, and a clamping block (6321) is rotatably connected inside the rectangular groove. The front side of the clamping block (6321) is inclined.

5. The bilateral sealing mother equipment for a metal pipe fitting according to claim 1, characterized in that: The guiding structure (66) includes a first support (661) with its bottom fastened to the cushion rack (62). On the middle and upper part of the rear side of the first support (661), a first air cylinder (662) is fastened. The output shaft of the first air cylinder (662) at the front part is connected with a bearing block (663). The middle side of the bottom of the bearing block (663) is slidably connected with a first slide rail (665) through a first slider (664), and the bottom of the first slide rail (665) is fastened to the cushion rack (62). On the middle side of the top of the bearing block (663), a strip-shaped block (666) is fastened. Inside the lower part of the front part of the strip-shaped block (666), a nut seat (667) is rotatably connected, and the middle and upper part of the rear part of the nut seat (667) is connected with the upper inner part of the front part of the strip-shaped block (666) through a spring. Horizontally, a groove (6671) is formed in the middle side of the top of the nut seat (667), and a nut groove (6672) is formed by opening downward in the middle of the inner side of the groove (6671). The position of the nut groove (6672) corresponds to the channel position of the nut channel rack (65).

6. The bilateral sealing mother device for metal pipe fittings according to claim 1, characterized in that: The inserted structure (67) includes a second support (671) with its bottom fastened to the cushion frame (62). In the middle of the right side of the second support (671), a second main cylinder (672) is fastened. The output shaft on the left side of the second main cylinder (672) is connected to a displacement frame (673). The bottom side of the displacement frame (673) is slidably connected to a second slide rail (675) through a second slider (674), and the bottom of the second slide rail (675) is fastened to the cushion frame (62). Inside the right side of the displacement frame (673), a second auxiliary cylinder (676) is fastened. The output shaft on the left side of the second auxiliary cylinder (676) is connected to a push block (677). A conical column (678) is arranged at the lower middle part on the left side of the push block (677), and the top right side of the push block (677) is fastened to a sliding sleeve (679). A guiding frame (6710) is slidably penetrated through the front and rear sides inside the sliding sleeve (679), and the guiding frame (6710) is fastened to the top side of the displacement frame (673). A circular opening is formed in the middle of the left side of the displacement frame (673), and the conical column (678) is arranged inside the circular opening.

7. The bilateral sealing mother device for metal pipe fittings according to claim 1, characterized in that: The pushing tube structure (68) includes a third support (681) with its bottom fastened to the bottom plate (61). A third cylinder (682) is fastened to the rear side of the third support (681), and the output shaft on the front side of the third cylinder (682) is connected to a rectangular block (683). The bottom of the rectangular block (683) is slidably connected to a third slide rail (685) through a third slider (684), and the bottom of the third slide rail (685) is fastened to the bottom plate (61). A pushing tube seat (686) is installed on the top side of the rectangular block (683). Support pieces (687) are arranged on both the left and right sides of the pushing tube seat (686), and extension segments are formed forward at the lower front sides of the two support pieces (687).

8. The bilateral sealing mother equipment for metal pipe fittings according to claim 1, characterized in that: The enclosed bushing structure (69) includes a fourth support (691) whose bottom is fastened to the bottom plate (61). A fourth cylinder (692) is installed on the right side of the fourth support (691). The left output shaft of the fourth cylinder (692) is connected to a vertical frame (693). The front and rear sides of the bottom of the vertical frame (693) are both slidably connected to a fourth slide rail (695) through a fourth slider (694), and the bottoms of the two fourth slide rails (695) are both fastened to the bottom plate (61). An oil cylinder (696) is fastened to the left side of the top of the vertical frame (693). The bottom output shaft of the oil cylinder (696) is connected to a carriage (697). Columns (698) penetrate and slide through the front and rear sides inside the carriage (697), and the two columns (698) are respectively fixed to the front and rear sides inside the vertical frame (693). A bushing edge die (699) is slidably connected to the left side of the carriage (697). An enclosed bushing inner die (6910) is connected to the rear side inside the bushing edge die (699). An enclosed bushing die core (6911) and a pressing block (6912) are rotatably connected inside the enclosed bushing inner die (6910). Six enclosed bushing die cores (6911) and six pressing blocks (6912) are provided. The six enclosed bushing die cores (6911) and the six pressing blocks (6912) are slidably arranged in an alternating manner in a circular distribution. The right sides of the six enclosed bushing die cores (6911) are all connected to the vertical frame (693).

9. The bilateral sealing mother equipment for metal pipe fittings according to claim 8, characterized in that: A roller (6991) is rotatably connected to the front part of the right side of the bushing edge die (699), and the roller (6991) is inserted and slid inside the left side of the carriage (697). A return spring for driving the pressing block (6912) to slide outward is provided at the connection between the six pressing blocks (6912) and the enclosed bushing die core (6911).

10. The metal pipe fitting double-sided sealing mother equipment according to claim 8, characterized in that: Six guide grooves (69101) are equidistantly formed inside the inner side of the enclosed bushing inner die (6910), and the positions of the six guide grooves (69101) correspond to the positions of the six pressing blocks (6912) respectively. Protrusions (69111) are provided on the inner sides of the left parts of the six enclosed bushing die cores (6911), and the six protrusions (69111) surround to form a circular structure.

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