A multi-station high-precision valve assembly device and its assembly method

Abstract

The present invention discloses a multi-station high-precision valve assembly device and its assembly method, belonging to the technical field of valve assembly. It includes a base platform, and a rotating table is installed in the middle of the base platform; a plurality of carrier platforms are evenly installed on the rotating table at equal intervals in a circumferential array; a first limiting seat and a second limiting seat are fixedly installed on the carrier platform; a blocking module is installed in the installation groove on the upper side of the first limiting seat; a base feeding mechanism, a valve stem installation component, a valve core installation mechanism, an assembly mechanism and a blanking component are installed on the base platform; the base feeding mechanism includes a conveying component and a base feeding component installed on the base platform, and the base feeding mechanism further includes a base positioning component installed on the base feeding component; the valve core installation mechanism includes a material sorting component, a flipping component, a material transferring component and a pressing component installed on the base platform. By the above method, the lower valve seat is moved to the first limiting seat in a standard position; the valve core is sorted and positioned through the material sorting component and the flipping component, ensuring the assembly accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of valve assembly, and particularly relates to a multi-station high-precision valve assembly device and an assembly method thereof. Background Art

[0002] A ball valve includes a valve core, a valve stem, two valve seats connected by threads, and a seal installed in the valve seat. When assembling, it is necessary to make each part structure in a relatively standard position; when assembling the valve seat, it is necessary to apply sealant to ensure its sealing effect.

[0003] For example, Chinese Patent CN118023893B discloses a valve assembly machine. This assembly machine uses a vibrating feeding tray and an inclined downward sliding channel to sort the valve cores, and then drives the valve cores to move above the valve seats through a rotating disk, and assembles the valve cores into the valve seats through a pressing mechanism to complete the assembly.

[0004] However, it is difficult to automatically feed the valve seats during assembly, and it is difficult for this assembly machine to realize continuous assembly of the valve seats, valve cores, and valve stems.

[0005] Based on this, the present invention designs a multi-station high-precision valve assembly device and an assembly method thereof to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned disadvantages of the prior art, the present invention provides a multi-station high-precision valve assembly device and an assembly method thereof.

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0008] A multi-station high-precision valve assembly device includes a base, and also includes a rotating table, a carrier table, a base feeding mechanism, a valve stem installation component, a valve core installation mechanism, an assembly mechanism, and a blanking component;

[0009] A rotating table driven by a servo motor and a cam divider is installed in the middle of the base; carrier tables are fixedly installed on the rotating table at equal intervals in a circumferential array; a first limit seat and a second limit seat are fixedly installed on the carrier table; an installation groove and a positioning groove for limiting and supporting the lower valve seat are provided on the first limit seat, and a blocking module is installed in the installation groove above the first limit seat;

[0010] The base feeding mechanism, the valve stem installation component, the valve core installation mechanism, the assembly mechanism, and the blanking component are installed on the base;

[0011] The base loading mechanism includes a conveying component, a base loading component, and a base positioning component. The conveying component and the base loading component are installed on the base platform, and the base positioning component is installed on the base loading component; the valve core installation mechanism includes a sorting component, a flipping component, a material transferring component, and a pressing component installed on the base platform.

[0012] Furthermore, the blocking module includes a spring, a column rod, and a straight groove. A straight groove is formed on one side of the column rod side aligned with the valve rod installation position. The two ends of the spring are respectively fixedly connected to the column rod and the first limit seat; the column rod is limited and slides with the first limit seat.

[0013] Furthermore, the base loading component includes a base loading support frame, a first cylinder linear module, a cylinder linear slide table one, a mounting plate, a rotating disk, a loading mounting block, a first pneumatic gripper, and a second pneumatic gripper. The base loading support frame is fixedly installed on the base platform. A first cylinder linear module is fixedly installed on the upper side of the base loading support frame. The moving end of the first cylinder linear module is fixedly installed with a cylinder linear slide table one. The moving end of the cylinder linear slide table one is fixedly installed with a mounting plate; the mounting plate is composed of an upper straight plate and a lower L-shaped plate; a rotating disk is rotatably installed on the lower side of the mounting plate, and a loading mounting block is fixedly installed on the lower side of the mounting plate; a first pneumatic gripper for clamping the lower valve seat is fixedly installed on the lower side of the rotating disk, and a second pneumatic gripper for clamping the upper valve seat is fixedly installed on the lower side of the loading mounting block.

[0014] Furthermore, the base positioning component includes a positioning motor, a rotating plate, a connecting rod, a pushing block, and a fixed rod. The positioning motor is fixedly installed on the top of the mounting plate, and the rotating plate is fixedly connected to the output end of the positioning motor; a connecting rod is fixedly installed at the end of the rotating plate, and a pushing block is fixedly installed at the bottom of the connecting rod; the fixed rod is fixedly installed on the lower side of the mounting plate.

[0015] Furthermore, the sorting component includes a sorting mounting frame, a moving box, a sliding groove, a convex rod, a sorting cylinder, a moving frame, a moving groove, and a rubbing plate. The sorting mounting frame is fixedly installed on the base platform. The moving box is fixedly installed on the upper side of the sorting mounting frame. A sliding groove for accommodating the valve core is formed in the moving box, and the sliding groove is inclined; a convex rod is fixedly installed at the bottom of the sliding groove; moving grooves are symmetrically formed on the upper side of the moving box, and the inner side of the moving frame moves in the moving grooves; a rubbing plate is fixedly installed between the two moving frames; the sorting cylinder is fixedly installed on the sorting mounting frame, and the output end of the sorting cylinder is fixedly installed with a pushing and pulling plate. A floating groove is formed on the pushing and pulling plate, and a floating block is installed in the floating groove with limited sliding. The inner side of the floating block is fixedly connected to one side of the moving frame.

[0016] Further, the flipping assembly includes a fixed plate, a baffle plate, a rotating frame, a limiting surface, a receiving groove, a convex block, and a servo motor. The fixed plate is fixedly installed on the base platform. A baffle plate is fixedly installed on the right side of the fixed plate. A servo motor is fixedly installed on the rear side of the fixed plate. A rotating frame is rotatably installed on the front side of the fixed plate. The output end of the servo motor is fixedly connected to the rotating frame. A limiting surface is provided on the upper left side of the rotating frame. A receiving groove for accommodating the valve element is formed on the upper left side of the rotating frame. A convex block is fixedly installed on the inner bottom of the receiving groove. The receiving groove is aligned with the sliding groove, and the convex block is aligned with the convex rod.

[0017] Further, the material transfer assembly includes a valve element loading and installation frame, a third cylinder linear module, a support plate, a picking cylinder, and a suction cup. The valve element loading and installation frame is fixedly installed on the base platform. A third cylinder linear module is fixedly installed on the valve element loading and installation frame. The moving end of the third cylinder linear module is fixedly installed with a support plate. A picking cylinder is fixedly installed on the support plate. The output end of the picking cylinder is fixedly installed with a suction cup for picking up the valve element.

[0018] Further, the pressing-down assembly includes a pressing-down installation frame, a pressing-down cylinder, and a pressing block. The pressing-down installation frame is fixedly installed on the base platform. A pressing-down cylinder is fixedly installed on the pressing-down installation frame. The output end of the pressing-down cylinder is fixedly installed with a pressing block, and the pressing block is aligned with the valve element in the lower valve seat.

[0019] Further, the assembly mechanism includes an assembly component and a glue-applying component. An assembly component for assembly is installed on the base platform, and a glue-applying component for applying glue to the upper valve seat is installed on the base platform.

[0020] To better achieve the object of the present invention, the present invention also provides an assembly method for a multi-station high-precision valve assembly device, including the following steps:

[0021] Step 1: At the first station, the upper valve seat and the lower valve seat are conveyed through the conveying assembly. The linear slide table 1 of the cylinder drives the mounting plate, the rotating disc, the feeding mounting block, the first pneumatic gripper and the second pneumatic gripper to move downward. Then, the lower valve seat is picked up by the first pneumatic gripper, and the upper valve seat is picked up by the second pneumatic gripper. The linear slide table 1 of the cylinder drives the mounting plate, the rotating disc, the feeding mounting block, the first pneumatic gripper and the second pneumatic gripper to reset, driving the upper valve seat and the lower valve seat to move upward. The first linear module of the cylinder drives the linear slide table 1 of the cylinder to move horizontally, aligning the upper valve seat below the second pneumatic gripper with the second limit seat, and aligning the lower valve seat below the first pneumatic gripper with the mounting groove. During this process, the positioning motor drives the rotating plate to rotate, thereby driving the connecting rod and the push block to rotate. The lower valve seat is pushed by the push block for the protruding part for installing the valve rod, causing the lower valve seat, the first pneumatic gripper and the rotating disc to rotate until the other side of the protruding part of the lower valve seat for installing the valve rod contacts the fixed rod, thus completing the positioning of the lower valve seat and aligning the protruding part of the lower valve seat for installing the valve rod with the positioning groove. The linear slide table 1 of the cylinder drives the mounting plate, the rotating disc, the feeding mounting block, the first pneumatic gripper and the second pneumatic gripper to move downward, placing the upper valve seat on the second limit seat, and at the same time making the lower valve seat fall into the mounting groove, causing the protruding part of the lower valve seat for installing the valve rod to move into the positioning groove. At this time, the column rod is inserted into the interior of the lower valve seat. The first pneumatic gripper and the second pneumatic gripper reset, then the linear slide table 1 of the cylinder resets, the positioning motor drives the rotating plate, the connecting rod and the push block to reset, and the first linear module of the cylinder resets. The rotating table drives the carrier to rotate;

[0022] Step 2: At the second station, after the valve rod installation assembly clamps the valve rod, it drives the valve rod to move horizontally to align the valve rod with the lower valve seat. The valve rod installation assembly moves the valve rod into the lower valve seat. During this process, the valve rod installation assembly presses down the column rod, and the column rod vertically moves downward under the limiting action of the first limit seat, compressing the spring. Then, the valve rod installation assembly drives the valve rod to move horizontally, inserting the valve rod into the side wall of the valve seat, and the valve rod installation assembly resets. The spring drives the column rod to reset, aligning the straight groove with the block connecting the valve rod and the valve core, and blocking the valve rod through the column rod. The rotating table drives the carrier to rotate;

[0023] Step three: At the third station, the valve core is moved into the sliding groove through the external valve core conveying mechanism, the valve core slides or rolls in the sliding groove, and the bottom of the valve core is supported by the convex rod at the bottom of the sliding groove; if the slot connecting the valve core and the valve stem is downward, the convex rod is inserted into the slot of the valve core, at this time, the height of the valve core is low, and the valve core slides in the sliding groove; if the slot connecting the valve core and the valve stem is not downward, the height of the valve core is high; the material handling cylinder drives the moving frame to move in the moving groove, and the moving frame drives the rubbing board to move, and the rubbing board contacts the upper edge of the valve core, and drives the upper edge of the valve core to move, so that the valve core rolls until the slot connected to the valve stem on the valve core is downward; then the valve core slides along the sliding groove until the valve core moves into the receiving groove in the rotating frame, at this time, the slot on the lower side of the valve core is engaged with the convex block; the servo motor drives The movable rotating frame rotates until the limiting surface on the upper left side of the rotating frame contacts the side of the baffle plate, and the valve core is clamped through the baffle plate and the receiving groove to achieve secondary positioning of the valve core and ensure assembly accuracy; the material picking cylinder drives the suction cup to move vertically downward, picks up the valve core through the suction cup, and then the material picking cylinder drives the valve core to move vertically through the suction cup, so that the valve core is separated from the receiving groove; the servo motor drives the rotating frame to reset; the third cylinder linear module drives the valve core to move to the upper side of the lower valve seat through the support plate, the material picking cylinder and the suction cup; the material picking cylinder drives the valve core to move vertically downward through the suction cup, the valve core presses the column rod downward, and the spring is compressed; until the valve core moves into the lower valve seat, the groove on the valve core is engaged with the block on the valve stem; the material picking cylinder and the suction cup are reset, and the third cylinder linear module drives the support plate to reset; the rotating table drives the carrier to rotate;

[0024] Step 4: At the fourth station, the pressing assembly presses down the valve core again. After the pressing assembly is reset, the rotating table drives the carrier to continue rotating;

[0025] Step 5: At the fifth station, the assembly component installs the upper valve seat onto the lower valve seat, and during this process, the glue coating component is used to coat the connection between the upper valve seat and the lower valve seat; then the assembly component and the glue coating component are reset; the rotating table drives the carrier to continue to rotate;

[0026] Step 6: At the sixth station, the blanking assembly removes the assembled valve.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The rotating table drives multiple upper-stage carrier tables to rotate, causing the carrier tables to move to the first to sixth workstations in sequence; at the first workstation, the upper valve seat and the lower valve seat are conveyed through the conveying assembly, and the lower valve seat and the upper valve seat on the conveying assembly are sequentially transferred to the first limiting seat and the second limiting seat on the carrier table by the base loading assembly. During this process, the lower valve seat is positioned by the base positioning assembly, so that the lower valve seat is moved to the installation groove in the standard position. At this time, the protruding part of the lower valve seat for installing the valve rod is located in the positioning groove, and the blocking module is inserted into the lower valve seat; at the second workstation, the valve rod installation support frame installs the valve rod into the lower valve seat, and then the valve rod installation support frame resets. The blocking module on the first limiting seat prevents the lower valve rod from falling off; at the third workstation, the sorting assembly sorts the valve cores, making the card slots of the valve cores for assembling with the valve rod face downward. Then the sorting assembly conveys the valve cores to the flipping assembly in sequence. The flipping assembly drives the valve cores to rotate, causing the card slots of the valve cores for assembling with the valve rod to rotate. At the same time, the valve cores are positioned again to make the valve cores in the standard position; then the material transfer assembly drives the valve cores in the flipping assembly to move to the upper side of the first limiting seat, and the valve cores are placed into the lower valve seat through the material transfer assembly, so that the card slots on the valve cores are inserted together with the valve rod. At this time, the blocking module is pressed down by the valve core; then the rotating table drives the upper valve seat and the lower valve seat assembled with the valve rod and the valve core to move to the fourth workstation through the first limiting seat and the second limiting seat. At the fourth workstation, the valve core is pressed down again through the pressing assembly to ensure that the valve core is assembled in place; at the fifth workstation, the assembly mechanism picks up the upper valve seat, applies glue to the connecting part of the upper valve seat and the lower valve seat, and then assembles the upper valve seat and the lower valve seat together; at the sixth workstation, the assembled valve is removed through the unloading assembly, and then the blocking module resets. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 Three-dimensional view of a multi-station high-precision valve assembly device of the present invention Figure 1 ;

[0030] Figure 2 Front view of a multi-station high-precision valve assembly device of the present invention;

[0031] Figure 3 Top view of a multi-station high-precision valve assembly device of the present invention;

[0032] Figure 4Three-dimensional view of a multi-station high-precision assembly device for valves of the present invention Figure 2 ;

[0033] Figure 5 is Figure 4 an enlarged view of part A in

[0034] Figure 6 a schematic diagram of the carrier table and its connection structure;

[0035] Figure 7 a schematic diagram of the first pneumatic gripper and its connection structure;

[0036] Figure 8 a schematic diagram of the valve stem gripper and its connection structure;

[0037] Figure 9 is Figure 1 an enlarged view of part B in

[0038] Figure 10 a three-dimensional view of the moving box and its connection structure with some parts removed;

[0039] Figure 11 a schematic diagram of the pressing block and its connection structure;

[0040] Figure 12 is Figure 4 an enlarged view of part C in

[0041] Figure 13 a schematic diagram of the blanking gripper and its connection structure.

[0042] The reference numerals in the figure respectively represent:

[0043] 1. Base; 2. Rotating table; 3. Carrier; 31. First limit seat; 311. Mounting slot; 312. Positioning slot; 313. Blocking module; 3131. Spring; 3132. Column; 3133. Straight slot; 32. Second limit seat; 321. Limit table; 322. Insertion rod; 4. Base loading mechanism; 41. Conveying assembly; 411. Limiting plate; 42. Base loading assembly; 421. Base loading support frame; 422. First cylinder linear module; 423. Cylinder linear slide 1; 424. Mounting plate; 425. Rotating disk; 426 , loading mounting block; 427, first pneumatic clamp; 428, second pneumatic clamp; 43, base positioning assembly; 431, positioning motor; 432, rotating plate; 433, connecting rod; 434, push block; 435, fixed rod; 5, valve stem mounting assembly; 51, valve stem mounting support frame; 52, second cylinder linear module; 53, cylinder linear slide two; 54, valve stem loading cylinder; 55, valve stem clamp; 6, valve core mounting mechanism; 61, material sorting assembly; 611, material sorting mounting frame; 612, moving box; 613, sliding groove; 614, convex rod ;615, material handling cylinder;6151, push-pull plate;6152, floating groove;616, mobile frame;6161, floating block;617, mobile groove;618, rubbing board;62, flip assembly;621, fixed plate;622, baffle;623, rotating frame;624, limit surface;625, receiving groove;626, bump;627, servo motor;63, material moving assembly;631, valve core loading mounting frame;632, third cylinder linear module;633, support plate;634, material taking cylinder;635, suction cup;64, pressing assembly;6 41. Pressing mounting frame; 642. Pressing cylinder; 643. Pressing block; 7. Assembly mechanism; 71. Assembly component; 711. Assembly mounting frame; 712. Fourth cylinder linear module; 713. Cylinder linear slide three; 714. Assembly motor; 715. Rotating mounting block; 716. Assembly clamp; 72. Gluing component; 721. Gluing mounting frame; 722. Give way cylinder; 723. Moving block; 724. Gluing tube; 8. Unloading component; 81. Unloading mounting frame; 82. Fifth cylinder linear module; 83. Unloading cylinder; 84. Unloading clamp. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] The "left", "right", "front", "back", "top", and "bottom" mentioned in the following description are oriented in the viewing direction of the front view.

[0046] Embodiment 1: In some embodiments, referring to the Figures 1 - 5 drawings of the specification, a multi-station high-precision valve assembly device includes a base 1, and also includes a rotating table 2, a carrier 3, a base feeding mechanism 4, a valve stem installation component 5, a valve core installation mechanism 6, an assembly mechanism 7, and a blanking component 8;

[0047] Six stations numbered from one to six are sequentially arranged on the base 1 in the counterclockwise direction, and the leftmost one is the first station;

[0048] A rotating table 2 driven by a servo motor and a cam divider is installed in the middle of the base 1; carrier platforms 3 are fixedly installed on the rotating table 2 at equal intervals in a circumferential array; a first limit seat 31 and a second limit seat 32 are fixedly installed on the carrier platform 3; an installation groove 311 and a positioning groove 312 for limiting and supporting the lower valve seat are formed on the first limit seat 31, and a blocking module 313 is installed in the installation groove 311 on the upper side of the first limit seat 31;

[0049] The base feeding mechanism 4, the valve stem installation component 5, the valve core installation mechanism 6, the assembly mechanism 7, and the blanking component 8 are installed on the base 1;

[0050] The base feeding mechanism 4 is located at the first station, the valve stem installation component 5 is located at the second station, the valve core installation mechanism 6 is located at the third and fourth stations, the assembly mechanism 7 is located at the fifth station, and the blanking component 8 is located at the sixth station;

[0051] The base feeding mechanism 4 includes a conveying component 41, a base feeding component 42, and a base positioning component 43. The conveying component 41 and the base feeding component 42 are installed on the base 1, and the base positioning component 43 is installed on the base feeding component 42; the valve core installation mechanism 6 includes a material sorting component 61, a flipping component 62, a material transferring component 63, and a pressing component 64 installed on the base 1.

[0052] The material sorting component 61, the flipping component 62, and the material transferring component 63 are installed at the third station, and the pressing component 64 is installed at the fourth station;

[0053] A detection station for detecting whether there is material is provided between two adjacent stations;

[0054] In this embodiment, the rotating table 2 drives multiple groups of upper-stage carrier tables 3 to rotate, causing the carrier tables 3 to move to the first to sixth workstations in sequence; at the first workstation, the upper valve seat and the lower valve seat are conveyed through the conveying component 41, and the lower valve seat and the upper valve seat on the conveying component 41 are sequentially transferred to the first limiting seat 31 and the second limiting seat 32 on the carrier table 3 through the base loading component 42. During this process, the lower valve seat is positioned through the base positioning component 43, so that the lower valve seat moves to the installation groove 311 in the standard position. At this time, the protruding part of the lower valve seat for installing the valve stem is located in the positioning groove 312, and the blocking module 313 is inserted into the lower valve seat; at the second workstation, the valve stem installation support frame 51 installs the valve stem into the lower valve seat, and then the valve stem installation support frame 51 resets. The blocking module 313 on the first limiting seat 31 prevents the lower valve stem from falling off; at the third workstation, the sorting component 61 sorts the valve cores, making the card slots of the valve cores for assembling with the valve stem face downward. Then, the sorting component 61 conveys the valve cores to the flipping component 62 in sequence. The flipping component 62 drives the valve cores to rotate, causing the card slots of the valve cores for assembling with the valve stem to rotate. At the same time, the valve cores are positioned again to make the valve cores in the standard position; then, the material transfer component 63 drives the valve cores in the flipping component 62 to move to the upper side of the first limiting seat 31, and the material transfer component 63 places the valve cores into the lower valve seat, making the card slots on the valve cores inserted into the valve stem. At this time, the blocking module 313 is pressed down by the valve core; then, the rotating table 2 drives the upper valve seat and the lower valve seat assembled with the valve stem and the valve core to move to the fourth workstation through the first limiting seat 31 and the second limiting seat 32. At the fourth workstation, the valve core is pressed down again through the pressing component 64 to ensure that the valve core is assembled in place; at the fifth workstation, the assembly mechanism 7 picks up the upper valve seat, applies glue to the connecting part of the upper valve seat and the lower valve seat, and then assembles the upper valve seat and the lower valve seat together; at the sixth workstation, the assembled valve is removed through the blanking component 8, and then the blocking module 313 resets.

[0055] Embodiment 2: In some embodiments, as Figures 1 - 13 shown, as a preferred embodiment of the present invention, the blocking module 313 includes a spring 3131, a column rod 3132, and a straight groove 3133. A straight groove 3133 is opened on one side of the column rod 3132 aligned with the valve stem installation position, and the two ends of the spring 3131 are respectively fixedly connected to the column rod 3132 and the first limiting seat 31; the column rod 3132 is limited and slid with the first limiting seat 31;

[0056] A limiting platform 321 for supporting the upper valve seat is fixedly installed on the second limiting seat 32, and a plug rod 322 for positioning the upper valve seat is fixedly installed on the limiting platform 321;

[0057] The conveying component 41 includes two linear vibrators respectively for conveying the upper valve seat and the lower valve seat, which are mature commercially available structures in the art; a limiting plate 411 for blocking materials is fixedly installed at the end of the conveying component 41;

[0058] The base loading component 42 includes a base loading support frame 421, a first cylinder linear module 422, a first cylinder linear slide 423, a mounting plate 424, a rotating disk 425, a loading mounting block 426, a first pneumatic gripper 427, and a second pneumatic gripper 428. The base loading support frame 421 is fixedly installed on the base 1. A first cylinder linear module 422 is fixedly installed on the upper side of the base loading support frame 421. The moving end of the first cylinder linear module 422 is fixedly installed with a first cylinder linear slide 423. The moving end of the first cylinder linear slide 423 is fixedly installed with a mounting plate 424. The mounting plate 424 is composed of an upper straight plate and a lower L-shaped plate. The rotating disk 425 is rotatably installed on the lower side of the mounting plate 424. The loading mounting block 426 is fixedly installed on the lower side of the mounting plate 424. The first pneumatic gripper 427 for gripping the lower valve seat is fixedly installed on the lower side of the rotating disk 425. The second pneumatic gripper 428 for gripping the upper valve seat is fixedly installed on the lower side of the loading mounting block 426.

[0059] The base positioning component 43 includes a positioning motor 431, a rotating plate 432, a connecting rod 433, a pushing block 434, and a fixed rod 435. The positioning motor 431 is fixedly installed on the top of the mounting plate 424. The rotating plate 432 is fixedly connected to the output end of the positioning motor 431. The connecting rod 433 is fixedly installed at the end of the rotating plate 432. The pushing block 434 is fixedly installed at the bottom of the connecting rod 433. The fixed rod 435 is fixedly installed on the lower side of the mounting plate 424.

[0060] The valve stem installation component 5 includes a valve stem installation support frame 51, a second cylinder linear module 52, a second cylinder linear slide 53, a valve stem loading cylinder 54, and a valve stem gripper 55. The valve stem installation support frame 51 is fixedly installed on the base 1. The second cylinder linear module 52 is fixedly installed on the valve stem installation support frame 51. The moving end of the second cylinder linear module 52 is fixedly installed with a second cylinder linear slide 53. The moving end of the second cylinder linear slide 53 is fixedly installed with a valve stem loading cylinder 54. The output end of the valve stem loading cylinder 54 is fixedly installed with a valve stem gripper 55 for gripping the valve stem.

[0061] The sorting component 61 includes a sorting mounting frame 611, a moving box 612, a sliding groove 613, a convex rod 614, a sorting cylinder 615, a moving frame 616, a moving groove 617 and a rubbing plate 618. The sorting mounting frame 611 is fixedly installed on the base 1. The moving box 612 is fixedly installed on the upper side of the sorting mounting frame 611. A sliding groove 613 for accommodating the valve core is formed in the moving box 612, and the sliding groove 613 is inclined. A convex rod 614 is fixedly installed at the inner bottom of the sliding groove 613. Moving grooves 617 are symmetrically formed in the upper side of the moving box 612, and the inner sides of the moving frames 616 move in the moving grooves 617. A rubbing plate 618 is fixedly installed between the two moving frames 616. The sorting cylinder 615 is fixedly installed on the sorting mounting frame 611. The output end of the sorting cylinder 615 is fixedly installed with a push-pull plate 6151. A floating groove 6152 is formed in the push-pull plate 6151. A floating block 6161 is installed in the floating groove 6152 in a limited sliding manner. The inner side of the floating block 6161 is fixedly connected to one of the moving frames 616;

[0062] The flipping component 62 includes a fixing plate 621, a baffle 622, a rotating frame 623, a limiting surface 624, a receiving groove 625, a convex block 626 and a servo motor 627. The fixing plate 621 is fixedly installed on the base 1. A baffle 622 is fixedly installed on the right side of the fixing plate 621. A servo motor 627 is fixedly installed on the rear side of the fixing plate 621. A rotating frame 623 is rotatably installed on the front side of the fixing plate 621. The output end of the servo motor 627 is fixedly connected to the rotating frame 623. A limiting surface 624 is arranged on the upper left side of the rotating frame 623. A receiving groove 625 for accommodating the valve core is formed on the upper left side of the rotating frame 623. A convex block 626 is fixedly installed at the inner bottom of the receiving groove 625. The receiving groove 625 is aligned with the sliding groove 613, and the convex block 626 is aligned with the convex rod 614;

[0063] The material transfer component 63 includes a valve core feeding mounting frame 631, a third cylinder linear module 632, a support plate 633, a picking cylinder 634 and a suction cup 635. The valve core feeding mounting frame 631 is fixedly installed on the base 1. A third cylinder linear module 632 is fixedly installed on the valve core feeding mounting frame 631. The moving end of the third cylinder linear module 632 is fixedly installed with a support plate 633. A picking cylinder 634 is fixedly installed on the support plate 633. The output end of the picking cylinder 634 is fixedly installed with a suction cup 635 for picking up the valve core;

[0064] The inner bottom of the suction cup 635 is communicated with an external vacuum pump through a vacuum tube;

[0065] The pressing assembly 64 includes a pressing mounting frame 641, a pressing cylinder 642 and a pressing block 643. The pressing mounting frame 641 is fixedly mounted on the base 1, the pressing cylinder 642 is fixedly mounted on the pressing mounting frame 641, and the pressing block 643 is fixedly mounted on the output end of the pressing cylinder 642, and the pressing block 643 is aligned with the valve core in the lower valve seat;

[0066] The assembly mechanism 7 comprises an assembly component 71 and a glue coating component 72. The assembly component 71 for assembly is installed on the base 1, and the glue coating component 72 for coating glue on the upper valve seat is installed on the base 1.

[0067] The assembly component 71 includes an assembly mounting frame 711, a fourth cylinder linear module 712, a cylinder linear slide 3 713, an assembly motor 714, a rotation mounting block 715 and an assembly clamp 716. The assembly mounting frame 711 is fixedly mounted on the base 1, the fourth cylinder linear module 712 is fixedly mounted on the assembly mounting frame 711, the fourth cylinder linear module 712 is fixedly mounted on the moving end of the fourth cylinder linear module 712, the cylinder linear slide 3 713 is fixedly mounted on the moving end of the cylinder linear slide 3 713, the assembly support table is fixedly mounted on the assembly support table, the assembly motor 714 is fixedly mounted on the assembly support table, the output end of the assembly motor 714 is fixedly mounted on the rotation mounting block 715, and the assembly clamp 716 is fixedly mounted on the lower side of the rotation mounting block 715;

[0068] The glue coating assembly 72 includes a glue coating mounting frame 721, a clearance cylinder 722, a moving block 723 and a glue coating tube 724. The glue coating mounting frame 721 is fixedly mounted on the base 1, the clearance cylinder 722 is fixedly mounted on the glue coating mounting frame 721, the moving block 723 is fixedly mounted on the output end of the clearance cylinder 722, and the glue coating tube 724 for glue coating is fixedly mounted on the moving block 723;

[0069] The glue coating pipe 724 is connected to the pump for conveying glue through a hose;

[0070] The unloading assembly 8 includes an unloading mounting frame 81, a fifth cylinder linear module 82, an unloading cylinder 83 and an unloading clamp 84. The unloading mounting frame 81 is fixedly mounted on the base 1, and the fifth cylinder linear module 82 is fixedly mounted on the unloading mounting frame 81. The unloading cylinder 83 is fixedly mounted on the movable end of the fifth cylinder linear module 82, and the unloading clamp 84 is fixedly mounted on the output end of the unloading cylinder 83.

[0071] In this embodiment, at the first station, the upper valve seat and the lower valve seat are conveyed by the conveying assembly 41, and the upper valve seat and the lower valve seat are blocked by the limiting plate 411. The linear slide of the first cylinder 423 drives the mounting plate 424, the rotating disk 425, the feeding mounting block 426, the first pneumatic gripper 427 and the second pneumatic gripper 428 to move downward. Then, the lower valve seat is picked up by the first pneumatic gripper 427, and the upper valve seat is picked up by the second pneumatic gripper 428. Then, the linear slide of the first cylinder 423 drives the mounting plate 424, the rotating disk 425, the feeding mounting block 426, the first pneumatic gripper 427 and the second pneumatic gripper 428 to reset, thereby driving the upper valve seat and the lower valve seat to move upward. The first linear module of the cylinder 422 drives the linear slide of the first cylinder 423 to move horizontally, so that the upper valve seat below the second pneumatic gripper 428 is aligned with the limiting table 321, and the lower valve seat below the first pneumatic gripper 427 is aligned with the mounting groove 311. During this process, the positioning motor 431 drives the rotating plate 432 to rotate, thereby driving the connecting rod 433 and the pushing block 434 to rotate. The pushing block 434 is used to push the protruding part of the lower valve seat for installing the valve rod, so that the lower valve seat, the first pneumatic gripper 427 and the rotating disk 425 rotate until the other side of the protruding part of the lower valve seat for installing the valve rod contacts the fixed rod 435, thereby completing the positioning of the lower valve seat and aligning the protruding part of the lower valve seat for installing the valve rod with the positioning groove 312. The linear slide of the first cylinder 423 drives the mounting plate 424, the rotating disk 425, the feeding mounting block 426, the first pneumatic gripper 427 and the second pneumatic gripper 428 to move downward, so that the upper valve seat falls onto the limiting table 321, the inserting rod 322 passes through the middle of the upper valve seat, and at the same time, the lower valve seat falls into the mounting groove 311, and the protruding part of the lower valve seat for installing the valve rod moves into the positioning groove 312. At this time, the column rod 3132 is inserted into the inside of the lower valve seat. The first pneumatic gripper 427 and the second pneumatic gripper 428 are reset, then the linear slide of the first cylinder 423 is reset, the positioning motor 431 drives the rotating plate 432, the connecting rod 433 and the pushing block 434 to reset, and the first linear module of the cylinder 422 is reset. The rotating table 2 drives the carrier 3 to rotate;

[0072] At the second station, the valve stem loading cylinder 54 drives the valve stem gripper 55 to move vertically. After gripping the valve stem by the valve stem gripper 55, the valve stem loading cylinder 54 resets. Then, the second linear cylinder module 52 drives the linear cylinder slide 53, the valve stem loading cylinder 54 and the valve stem gripper 55 to move horizontally, so that the valve stem under the valve stem gripper 55 is aligned with the lower valve seat. Then, the valve stem loading cylinder 54 drives the valve stem gripper 55 and the valve stem to move down, so that the valve stem moves into the lower valve seat. During this process, the valve stem gripper 55 presses down the column rod 3132, and the column rod 3132 vertically moves down under the limiting action of the first limiting seat 31, and the spring 3131 is compressed. Then, the linear cylinder slide 53 drives the valve stem loading cylinder 54 and the valve stem gripper 55 to move horizontally, so that the valve stem is inserted into the side wall of the valve seat. Then, the linear cylinder slide 53 drives the valve stem loading cylinder 54 and the valve stem gripper 55 to reset, the valve stem loading cylinder 54 drives the valve stem gripper 55 to reset, and the second linear cylinder module 52 drives the linear cylinder slide 53 to reset; the spring 3131 drives the column rod 3132 to reset, and the straight groove 3133 is aligned with the block connecting the valve stem and the valve core, and the valve stem is blocked by the column rod 3132; the rotating table 2 drives the carrier 3 to rotate;

[0073] At the third station, the valve core is moved into the sliding groove 613 by the external valve core conveying mechanism, the valve core slides or rolls in the sliding groove 613, and the bottom of the valve core is supported by the convex rod 614 at the bottom of the sliding groove 613; if the slot connecting the valve core and the valve stem is downward, the convex rod 614 is inserted into the slot of the valve core, at this time, the valve core height is low, and the valve core slides in the sliding groove 613; if the slot connecting the valve core and the valve stem is not downward, the valve core height is high; the material handling cylinder 615 drives the moving frame 616 to move The movable frame 616 drives the rubbing plate 618 to move, and the rubbing plate 618 contacts the upper edge of the valve core and drives the upper edge of the valve core to move, so that the valve core rolls until the slot connected to the valve stem on the valve core is downward; then the valve core slides along the sliding slot 613 until the valve core moves to the receiving slot 625 in the rotating frame 623, at which time the slot on the lower side of the valve core is engaged with the protrusion 626; the servo motor 627 drives the rotating frame 623 to rotate until the rotating frame 623 The limiting surface 624 on the upper left side contacts the side of the baffle plate 622, and the valve core is clamped through the baffle plate 622 and the receiving groove 625 to achieve secondary positioning of the valve core and ensure assembly accuracy; the material taking cylinder 634 drives the suction cup 635 to move vertically downward, picks up the valve core through the suction cup 635, and then the material taking cylinder 634 drives the valve core to move vertically through the suction cup 635, so that the valve core is separated from the receiving groove 625; the servo motor 627 drives the rotating frame 623 to reset; the third cylinder linear module 63 2 The valve core is driven to move to the upper side of the lower valve seat through the support plate 633, the material taking cylinder 634 and the suction cup 635; the material taking cylinder 634 drives the valve core to move vertically downward through the suction cup 635, and the valve core presses down the column rod 3132, and the spring 3131 is compressed; until the valve core moves into the lower valve seat, the groove on the valve core is engaged with the block on the valve stem; the material taking cylinder 634 and the suction cup 635 are reset, and the third cylinder linear module 632 drives the support plate 633 to reset; the rotating table 2 drives the carrier 3 to rotate;

[0074] At the fourth station, the pressing cylinder 642 drives the pressing block 643 to press the valve core again; the pressing cylinder 642 is reset, and then the rotating platform 2 drives the carrier 3 to continue rotating;

[0075] At the fifth station, the linear sliding table three 713 of the cylinder drives the assembly motor 714, the rotating mounting block 715 and the assembly gripper 716 to move vertically downward. The assembly gripper 716 clamps the upper valve seat. Then, the linear sliding table three 713 of the cylinder resets. The fourth linear cylinder module 712 drives the linear sliding table three 713 of the cylinder to move horizontally to align the upper valve seat with the lower valve seat. Then, the assembly motor 714 drives the rotating mounting block 715 and the assembly gripper 716 to rotate, thereby driving the upper valve seat to rotate. The linear sliding table three 713 of the cylinder drives the assembly motor 714, the rotating mounting block 715 and the assembly gripper 716 to move vertically downward, so as to install the upper valve seat onto the lower valve seat. During this process, the positioning cylinder 722 drives the moving block 723 and the glue applicator tube 724 to move, so that the glue applicator tube 724 is aligned with the connection between the upper valve seat and the lower valve seat, thereby applying glue to the upper valve seat during the rotation of the upper valve seat. Then, the positioning cylinder 722 drives the moving block 723 and the glue applicator tube 724 to reset. The linear sliding table three 713 of the cylinder and the fourth linear cylinder module 712 reset. The turntable 2 drives the carrier 3 to rotate.

[0076] At the sixth station, the blanking cylinder 83 drives the blanking gripper 84 to move vertically to grab the assembled valve. Then, the blanking cylinder 83 resets. The fifth linear cylinder module 82 drives the blanking cylinder 83 to move to remove the assembled valve.

[0077] Embodiment 3: In some embodiments, as Figures 1 - 13 shown, as a preferred embodiment of the present invention, an assembly method for a multi-station high-precision valve assembly device includes the following steps:

[0078] Step 1: At the first station, the upper valve seat and the lower valve seat are conveyed by the conveying component 41, and the upper valve seat and the lower valve seat are blocked by the limiting plate 411. The linear slide of cylinder 1 423 drives the mounting plate 424, the rotating disc 425, the feeding mounting block 426, the first pneumatic gripper 427 and the second pneumatic gripper 428 to move downward. Then, the lower valve seat is picked up by the first pneumatic gripper 427, and the upper valve seat is picked up by the second pneumatic gripper 428. Then, the linear slide of cylinder 1 423 drives the mounting plate 424, the rotating disc 425, the feeding mounting block 426, the first pneumatic gripper 427 and the second pneumatic gripper 428 to reset, thereby driving the upper valve seat and the lower valve seat to move upward. The first linear module of cylinder 422 drives the linear slide of cylinder 1 423 to move horizontally, so that the upper valve seat below the second pneumatic gripper 428 is aligned with the limiting table 321, and the lower valve seat below the first pneumatic gripper 427 is aligned with the mounting groove 311. During this process, the positioning motor 431 drives the rotating plate 432 to rotate, thereby driving the connecting rod 433 and the pushing block 434 to rotate. The pushing block 434 is used to push the protruding part of the lower valve seat for installing the valve rod, so that the lower valve seat, the first pneumatic gripper 427 and the rotating disc 425 rotate until the other side of the protruding part of the lower valve seat for installing the valve rod contacts the fixed rod 435, thereby completing the positioning of the lower valve seat and aligning the protruding part of the lower valve seat for installing the valve rod with the positioning groove 312. The linear slide of cylinder 1 423 drives the mounting plate 424, the rotating disc 425, the feeding mounting block 426, the first pneumatic gripper 427 and the second pneumatic gripper 428 to move downward, so that the upper valve seat falls onto the limiting table 321, the inserting rod 322 passes through the middle of the upper valve seat, and at the same time, the lower valve seat falls into the mounting groove 311, and the protruding part of the lower valve seat for installing the valve rod moves into the positioning groove 312. At this time, the column rod 3132 is inserted into the inside of the lower valve seat. The first pneumatic gripper 427 and the second pneumatic gripper 428 reset, then the linear slide of cylinder 1 423 resets, the positioning motor 431 drives the rotating plate 432, the connecting rod 433 and the pushing block 434 to reset, and the first linear module of cylinder 422 resets. The rotating table 2 drives the carrier 3 to rotate;

[0079] Step 2: At the second station, the valve stem loading cylinder 54 drives the valve stem gripper 55 to move vertically. After gripping the valve stem with the valve stem gripper 55, the valve stem loading cylinder 54 resets. Then, the second linear cylinder module 52 drives the linear cylinder slide 53, the valve stem loading cylinder 54, and the valve stem gripper 55 to move horizontally, aligning the valve stem below the valve stem gripper 55 with the lower valve seat. Then, the valve stem loading cylinder 54 drives the valve stem gripper 55 and the valve stem to move downward, moving the valve stem into the lower valve seat. During this process, the valve stem gripper 55 presses down on the column rod 3132, and the column rod 3132 vertically moves downward under the limiting action of the first limiting seat 31, compressing the spring 3131. Then, the linear cylinder slide 53 drives the valve stem loading cylinder 54 and the valve stem gripper 55 to move horizontally, inserting the valve stem into the side wall of the valve seat. Then, the linear cylinder slide 53 drives the valve stem loading cylinder 54 and the valve stem gripper 55 to reset, the valve stem loading cylinder 54 drives the valve stem gripper 55 to reset, and the second linear cylinder module 52 drives the linear cylinder slide 53 to reset. The spring 3131 drives the column rod 3132 to reset, and the straight groove 3133 aligns with the block connecting the valve stem and the valve core, blocking the valve stem with the column rod 3132. The turntable 2 drives the carrier 3 to rotate;

[0080] Step 3: At the third station, the valve core is moved into the sliding groove 613 by an external valve core conveying mechanism. The valve core slides or rolls within the sliding groove 613, and the bottom of the valve core is supported by the convex rod 614 at the bottom inside the sliding groove 613. If the card slot connecting the valve core and the valve rod faces downward, the convex rod 614 is inserted into the card slot of the valve core. At this time, the height of the valve core is low, and the valve core slides within the sliding groove 613. If the card slot connecting the valve core and the valve rod does not face downward, then the height of the valve core is high. The sorting cylinder 615 drives the moving frame 616 to move within the moving groove 617, and the moving frame 616 drives the rubbing plate 618 to move. The rubbing plate 618 contacts the upper edge of the valve core and drives the upper edge of the valve core to move, causing the valve core to roll until the card slot connecting the valve core and the valve rod faces downward. Then the valve core slides along the inside of the sliding groove 613 until the valve core moves into the receiving groove 625 within the rotating frame 623. At this time, the card slot on the lower side of the valve core is engaged with the convex block 626. The servo motor 627 drives the rotating frame 623 to rotate until the limiting surface 624 on the upper left side of the rotating frame 623 contacts the side of the baffle 622. The valve core is clamped by the baffle 622 and the receiving groove 625 to achieve secondary positioning of the valve core and ensure the assembly accuracy. The picking cylinder 634 drives the suction cup 635 to move vertically downward, picks up the valve core through the suction cup 635, and then the picking cylinder 634 drives the valve core to move vertically through the suction cup 635, causing the valve core to disengage from the receiving groove 625. The servo motor 627 drives the rotating frame 623 to reset. The third cylinder linear module 632 drives the valve core to move to the upper side of the lower valve seat through the support plate 633, the picking cylinder 634, and the suction cup 635. The picking cylinder 634 drives the valve core to move vertically downward through the suction cup 635, and the valve core presses down the column rod 3132, compressing the spring 3131. Until the valve core moves into the lower valve seat, the card slot on the valve core is engaged with the clamping block on the valve rod. The picking cylinder 634 and the suction cup 635 reset, and the third cylinder linear module 632 drives the support plate 633 to reset. The rotating table 2 drives the carrier 3 to rotate.

[0081] Step 4: At the fourth station, the pressing cylinder 642 drives the pressing block 643 to press down the valve core again. The pressing cylinder 642 resets, and then the rotating table 2 drives the carrier 3 to continue rotating.

[0082] Step Five: At the fifth station, the linear sliding table three 713 of the air cylinder drives the assembly motor 714, the rotating mounting block 715 and the assembly gripper 716 to move vertically downward. The assembly gripper 716 clamps the upper valve seat, and then the linear sliding table three 713 of the air cylinder resets. The fourth linear module 712 of the air cylinder drives the linear sliding table three 713 of the air cylinder to move horizontally to align the upper valve seat with the lower valve seat. Then the assembly motor 714 drives the rotating mounting block 715 and the assembly gripper 716 to rotate, thereby driving the upper valve seat to rotate. The linear sliding table three 713 of the air cylinder drives the assembly motor 714, the rotating mounting block 715 and the assembly gripper 716 to move vertically downward, so as to install the upper valve seat onto the lower valve seat. During this process, the positioning air cylinder 722 drives the moving block 723 and the glue applicator tube 724 to move, so that the glue applicator tube 724 is aligned with the connection between the upper valve seat and the lower valve seat, thereby applying glue to the upper valve seat during the rotation of the upper valve seat. Then the positioning air cylinder 722 drives the moving block 723 and the glue applicator tube 724 to reset, and the linear sliding table three 713 of the air cylinder and the fourth linear module 712 of the air cylinder reset. The turntable 2 drives the carrier 3 to rotate.

[0083] Step Six: At the sixth station, the blanking air cylinder 83 drives the blanking gripper 84 to move vertically to grab the assembled valve, and then the blanking air cylinder 83 resets. The fifth linear module 82 of the air cylinder drives the blanking air cylinder 83 to move to remove the assembled valve.

[0084] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-station high-precision valve assembly device, comprising a base (1), characterized in that: It also includes a rotating table (2), a carrier table (3), a base loading mechanism (4), a valve stem mounting assembly (5), a valve core mounting mechanism (6), an assembly mechanism (7) and a unloading assembly (8); A rotating table (2) driven by a servo motor and a cam divider is installed in the middle of the base (1); a carrier (3) is fixedly installed on the rotating table (2) at even intervals in a circular array; a first limit seat (31) and a second limit seat (32) are fixedly installed on the carrier (3); a mounting groove (311) and a positioning groove (312) for limiting and supporting the lower valve seat are provided on the first limit seat (31), and a blocking module (313) is installed in the mounting groove (311) on the upper side of the first limit seat (31); The base loading mechanism (4), the valve stem mounting assembly (5), the valve core mounting mechanism (6), the assembly mechanism (7) and the unloading assembly (8) are mounted on the base (1); The base loading mechanism (4) comprises a conveying assembly (41), a base loading assembly (42) and a base positioning assembly (43); the conveying assembly (41) and the base loading assembly (42) are mounted on the base (1), and the base positioning assembly (43) is mounted on the base loading assembly (42); the valve core mounting mechanism (6) comprises a material sorting assembly (61), a turning assembly (62), a material moving assembly (63) and a pressing assembly (64) mounted on the base (1); The blocking module (313) comprises a spring (3131), a column (3132) and a straight groove (3133); a straight groove (3133) is provided on a side of the column (3132) aligned with the valve stem installation position; two ends of the spring (3131) are respectively fixedly connected to the column (3132) and the first limit seat (31); the column (3132) and the first limit seat (31) are limitedly slidable; The base positioning assembly (43) comprises a positioning motor (431), a rotating plate (432), a connecting rod (433), a push block (434) and a fixed rod (435); the positioning motor (431) is fixedly mounted on the base feeding assembly (42); the rotating plate (432) is fixedly connected to the output end of the positioning motor (431); the connecting rod (433) is fixedly mounted on the end of the rotating plate (432); the push block (434) is fixedly mounted on the bottom of the connecting rod (433); and the fixed rod (435) is fixedly mounted on the base feeding assembly (42); The valve stem mounting assembly (5) comprises a valve stem mounting support frame (51), a second cylinder linear module (52), a second cylinder linear slide (53), a valve stem feeding cylinder (54) and a valve stem clamp (55); the valve stem mounting support frame (51) is fixedly mounted on the base (1); the second cylinder linear module (52) is fixedly mounted on the valve stem mounting support frame (51); the second cylinder linear slide (53) is fixedly mounted on the movable end of the second cylinder linear module (52); the valve stem feeding cylinder (54) is fixedly mounted on the movable end of the second cylinder linear slide (53); and the valve stem clamp (55) for clamping the valve stem is fixedly mounted on the output end of the valve stem feeding cylinder (54); The material sorting assembly (61) comprises a material sorting mounting frame (611), a moving box (612), a sliding groove (613), a protruding rod (614), a material sorting cylinder (615), a moving frame (616), a moving groove (617) and a rubbing board (618); the material sorting mounting frame (611) is fixedly mounted on a base (1); the moving box (612) is fixedly mounted on the upper side of the material sorting mounting frame (611); a sliding groove (613) for accommodating a valve core is provided in the moving box (612); the sliding groove (613) is inclined; a protruding rod (614) is fixedly mounted on the bottom of the sliding groove (613); the moving box (616) is fixedly mounted on the upper side of the material sorting mounting frame (611); 612) is symmetrically provided with a moving groove (617) on the upper side, and the inner side of the moving frame (616) moves in the moving groove (617); a rubbing plate (618) is fixedly installed between the moving frames (616) on both sides; a material sorting cylinder (615) is fixedly installed on the material sorting mounting frame (611), and a push-pull plate (6151) is fixedly installed on the output end of the material sorting cylinder (615), and a floating groove (6152) is provided on the push-pull plate (6151), and a floating block (6161) is limitedly slidably installed in the floating groove (6152), and the inner side of the floating block (6161) is fixedly connected to the moving frame (616) on one side; The flip assembly (62) comprises a fixed plate (621), a baffle (622), a rotating frame (623), a limiting surface (624), a receiving groove (625), a protrusion (626) and a servo motor (627). The fixed plate (621) is fixedly mounted on the base (1). The baffle (622) is fixedly mounted on the right side of the fixed plate (621). The servo motor (627) is fixedly mounted on the rear side of the fixed plate (621). The rotating frame (623) is rotatably mounted on the front side of the fixed plate (621). The output end of the servo motor (627) is fixedly connected to the rotating frame (623). The limiting surface (624) is arranged on the upper left side of the rotating frame (623). The receiving groove (625) for receiving the valve core is provided on the upper left side of the rotating frame (623). The protrusion (626) is fixedly mounted on the bottom of the receiving groove (625). The receiving groove (625) is aligned with the sliding groove (613), and the protrusion (626) is aligned with the protruding rod (614).

2. The multi-station high-precision valve assembly equipment according to claim 1 is characterized in that: The base loading assembly (42) comprises a base loading support frame (421), a first cylinder linear module (422), a cylinder linear slide (423), a mounting plate (424), a rotating disk (425), a loading mounting block (426), a first pneumatic clamp (427) and a second pneumatic clamp (428), wherein the base loading support frame (421) is fixedly mounted on the base (1), the first cylinder linear module (422) is fixedly mounted on the upper side of the base loading support frame (421), and the movable end of the first cylinder linear module (422) is fixedly mounted with a pneumatic A cylinder linear slide (423), the movable end of which is fixedly mounted with a mounting plate (424); the mounting plate (424) is composed of an upper straight plate and a lower L-shaped plate; a rotating disk (425) is rotatably mounted on the lower side of the mounting plate (424), and a loading mounting block (426) is fixedly mounted on the lower side of the mounting plate (424); a first pneumatic clamp (427) for clamping a lower valve seat is fixedly mounted on the lower side of the rotating disk (425), and a second pneumatic clamp (428) for clamping an upper valve seat is fixedly mounted on the lower side of the loading mounting block (426).

3. The multi-station high-precision valve assembly equipment according to claim 2 is characterized in that: The material moving assembly (63) comprises a valve core loading mounting frame (631), a third cylinder linear module (632), a support plate (633), a material picking cylinder (634) and a suction cup (635); the valve core loading mounting frame (631) is fixedly mounted on the base (1); the third cylinder linear module (632) is fixedly mounted on the valve core loading mounting frame (631); the support plate (633) is fixedly mounted on the moving end of the third cylinder linear module (632); the material picking cylinder (634) is fixedly mounted on the support plate (633); and the suction cup (635) for picking up the valve core is fixedly mounted on the output end of the material picking cylinder (634).

4. The multi-station high-precision valve assembly equipment according to claim 3 is characterized in that: The downward pressing assembly (64) comprises a downward pressing mounting frame (641), a downward pressing cylinder (642) and a pressing block (643); the downward pressing mounting frame (641) is fixedly mounted on the base (1); the downward pressing cylinder (642) is fixedly mounted on the downward pressing mounting frame (641); the output end of the downward pressing cylinder (642) is fixedly mounted with a pressing block (643); the pressing block (643) is aligned with the valve core in the lower valve seat.

5. The multi-station high-precision valve assembly equipment according to claim 4 is characterized in that: The assembly mechanism (7) comprises an assembly component (71) and a glue coating component (72); the assembly component (71) for assembly is mounted on the base (1); and the glue coating component (72) for coating glue on the upper valve seat is mounted on the base (1); The assembly component (71) comprises an assembly mounting frame (711), a fourth cylinder linear module (712), a third cylinder linear slide (713), an assembly motor (714), a rotating mounting block (715) and an assembly clamp (716); the assembly mounting frame (711) is fixedly mounted on the base (1); the fourth cylinder linear module (712) is fixedly mounted on the assembly mounting frame (711); the movable end of the fourth cylinder linear module (712) is fixedly mounted with the third cylinder linear slide (713); the movable end of the third cylinder linear slide (713) is fixedly mounted with an assembly support platform; the assembly motor (714) is fixedly mounted on the assembly support platform; the output end of the assembly motor (714) is fixedly mounted with the rotating mounting block (715); and the lower side of the rotating mounting block (715) is fixedly mounted with the assembly clamp (716); The glue coating assembly (72) comprises a glue coating mounting frame (721), a clearance cylinder (722), a moving block (723) and a glue coating tube (724); the glue coating mounting frame (721) is fixedly mounted on the base platform (1); the clearance cylinder (722) is fixedly mounted on the glue coating mounting frame (721); the moving block (723) is fixedly mounted on the output end of the clearance cylinder (722); and the glue coating tube (724) used for glue coating is fixedly mounted on the moving block (723).

6. An assembly method, using the valve multi-station high-precision assembly equipment according to claim 5, characterized in that: The following steps are involved: Step 1: At the first station, the upper valve seat and the lower valve seat are transported by the transport assembly (41), and the cylinder linear slide (423) drives the mounting plate (424), the rotating disk (425), the loading mounting block (426), the first pneumatic clamp (427) and the second pneumatic clamp (428) to move downward, and then the lower valve seat is picked up by the first pneumatic clamp (427), and the upper valve seat is picked up by the second pneumatic clamp (428); the cylinder linear slide (423) drives the mounting plate (424), the rotating disk (425), the loading mounting block (426), the first pneumatic clamp (427) and the second pneumatic clamp (428) to move downward. The claw (427) and the second pneumatic clamp (428) are reset, driving the upper valve seat and the lower valve seat to move upward; the first cylinder linear module (422) drives the cylinder linear slide (423) to move horizontally, so that the upper valve seat on the lower side of the second pneumatic clamp (428) is aligned with the second limit seat (32), and the lower valve seat on the lower side of the first pneumatic clamp (427) is aligned with the installation groove (311); during this process, the positioning motor (431) drives the rotating plate (432) to rotate, thereby driving the connecting rod (433) and the push block (434) to rotate, and the push block (434) pushes the lower valve The protruding portion of the seat for mounting the valve stem causes the lower valve seat, the first pneumatic clamp (427) and the rotating disk (425) to rotate until the other side of the protruding portion of the lower valve seat for mounting the valve stem contacts the fixing rod (435), thereby completing the positioning of the lower valve seat, so that the protruding portion of the lower valve seat for mounting the valve stem is aligned with the positioning groove (312); the cylinder linear slide (423) drives the mounting plate (424), the rotating disk (425), the loading mounting block (426), the first pneumatic clamp (427) and the second pneumatic clamp (428) to move downward, placing the upper valve seat on The first pneumatic clamp (427) and the second pneumatic clamp (428) are reset, and then the cylinder linear slide (423) is reset, the positioning motor (431) drives the rotating plate (432), the connecting rod (433) and the push block (434) to reset, and the first cylinder linear module (422) is reset; the rotating table (2) drives the carrier (3) to rotate; Step 2: At the second workstation, the valve stem installation assembly (5) clamps the valve stem and drives the valve stem to move horizontally so that the valve stem is aligned with the lower valve seat; the valve stem installation assembly (5) moves the valve stem into the lower valve seat, during which the valve stem installation assembly (5) presses down the column rod (3132), and the column rod (3132) moves vertically downward under the limiting action of the first limiting seat (31), and the spring (3131) is compressed; then the valve stem installation assembly (5) drives the valve stem to move horizontally so that the valve stem is inserted into the side wall of the valve seat, and the valve stem installation assembly (5) is reset; the spring (3131) drives the column rod (3132) to reset, and the straight groove (3133) is aligned with the block connecting the valve stem and the valve core, and the valve stem is blocked by the column rod (3132); the rotating table (2) drives the carrier (3) to rotate; Step 3: At the third station, the valve core is moved into the sliding groove (613) by the external valve core conveying mechanism, and the valve core slides or rolls in the sliding groove (613), and the bottom of the valve core is supported by the protruding rod (614) at the bottom of the sliding groove (613); if the groove connecting the valve core and the valve stem is downward, the protruding rod (614) is inserted into the groove of the valve core, and the height of the valve core is low at this time, and the valve core slides in the sliding groove (613); if the groove connecting the valve core and the valve stem is not downward, the height of the valve core is high; the material handling cylinder (615) drives the moving frame (616) to move in the moving groove (613); 17), the movable frame (616) drives the washboard (618) to move, and the washboard (618) contacts the upper edge of the valve core and drives the upper edge of the valve core to move, so that the valve core rolls until the groove connected to the valve stem on the valve core is downward; then the valve core slides along the sliding groove (613) until the valve core moves into the receiving groove (625) in the rotating frame (623), at which time the groove on the lower side of the valve core is engaged with the protrusion (626); the servo motor (627) drives the rotating frame (623) to rotate until the limit stop on the upper left side of the rotating frame (623) is released. The positioning surface (624) contacts the side of the baffle plate (622), and the valve core is clamped through the baffle plate (622) and the receiving groove (625), so as to realize secondary positioning of the valve core and ensure assembly accuracy; the material taking cylinder (634) drives the suction cup (635) to move vertically downward, and picks up the valve core through the suction cup (635), and then the material taking cylinder (634) drives the valve core to move vertically through the suction cup (635), so that the valve core is separated from the receiving groove (625); the servo motor (627) drives the rotating frame (623) to reset; the third cylinder linear module (632) is driven by the third cylinder linear module (632) to move vertically downward, and the valve core is picked up through the suction cup (635), and then the material taking cylinder (634) drives the valve core to move vertically through the suction cup (635), so that the valve core is separated from the receiving groove (625); The valve core is driven to move to the upper side of the lower valve seat through the support plate (633), the material taking cylinder (634) and the suction cup (635); the material taking cylinder (634) drives the valve core to move vertically downward through the suction cup (635), and the valve core presses the column rod (3132) downward, and the spring (3131) is compressed; until the valve core moves into the lower valve seat, the groove on the valve core is engaged with the block on the valve stem; the material taking cylinder (634) and the suction cup (635) are reset, and the third cylinder linear module (632) drives the support plate (633) to reset; the rotating table (2) drives the carrier (3) to rotate; Step 4: At the fourth station, the pressing assembly (64) presses down the valve core again. After the pressing assembly (64) is reset, the rotating platform (2) drives the carrier (3) to continue rotating. Step 5: At the fifth station, the assembly component (71) installs the upper valve seat onto the lower valve seat, and during this process, the glue coating component (72) is used to coat the connection between the upper valve seat and the lower valve seat with glue; then the assembly component (71) and the glue coating component (72) are reset; and the rotating table (2) drives the carrier (3) to continue rotating; Step 6: At the sixth station, the unloading assembly (8) removes the assembled valve.

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