Automatic assembling machine for valve rod sealing ring

Abstract

The utility model relates to the technical field of part assembling, in particular to an automatic assembling machine of a valve rod sealing ring, which comprises a machine frame, a valve rod feeding assembly, a valve rod loading assembly, an O-shaped ring feeding assembly, an O-shaped ring loading assembly, a rotary table assembly and a finished product unloading assembly, the valve rod feeding assembly, the valve rod loading assembly, the O-shaped ring feeding assembly, the O-shaped ring loading assembly, the rotary table assembly and the finished product unloading assembly are arranged on the machine frame, and a tool seat used for clamping a valve rod is arranged on the top of the rotary table assembly. The number of the O-shaped ring feeding assemblies is two, and the number of the O-shaped ring feeding assemblies is two. Each O-shaped ring feeding assembly comprises a feeding mechanism and a ring supporting mechanism. The two O-shaped ring feeding assemblies take the O-shaped sealing rings from the two ring supporting mechanisms correspondingly and sequentially push the two O-shaped sealing rings into the first groove and the second groove of the valve rod clamped to the tool base correspondingly. According to the utility model, the ring supporting action is carried out through the ring supporting mechanism, and the O-shaped ring feeding assembly can finish feeding of the O-shaped sealing ring only by taking and pushing out the O-shaped sealing ring, so that the assembling steps are simplified, and the working efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of parts assembly, and more specifically, to an automatic assembly machine for a valve stem sealing ring. Background Art

[0002] Industrial double-joint ball valves are widely used. Among them, the valve stem, as the core component, needs to be assembled with an O-ring. Two first grooves and second grooves are provided on the outer circumference of the valve stem for installing the O-ring. The first groove and the second groove are spaced apart along the axial direction of the valve stem, and the first groove is located below the second groove. The original operation was to manually use tooling to put the O-rings onto the valve stem one by one. This operation method has low efficiency and high labor intensity.

[0003] The prior art discloses an automatic assembly device and assembly method for valve stem sealing rings, which includes a valve stem automatic feeding device and two sets of sealing ring automatic assembly devices. The valve stem automatic feeding device sequentially moves the valve stem to the position to be assembled, thereby realizing automatic loading of the valve stem; after the valve stem automatic feeding device positions and presses the valve stem, the two sets of sealing ring automatic assembly devices respectively complete the automatic loading and support of the O-ring, and push the expanded O-ring into the groove of the valve stem at the two positions to be assembled on the valve stem, thereby completing the automatic assembly of the two sealing rings; finally, the assembled valve stem is moved out of the material Among them, the automatic assembly device of the sealing ring includes an upper ring supporting module and a ring transferring and removing module. The upper ring supporting module includes an O-ring feeding device, an O-ring loading device, and a ring supporting device. The ring transferring and removing module includes a ring transferring device. The ring transferring device forms a ring supporting station and a ring removing station. This scheme requires the O-ring to be transferred to the ring transferring and removing module through the ring supporting device. The ring transferring and removing module transfers the expanded O-ring from the ring supporting station to the ring removing station, and separates it from the expanded O-ring so that it is placed in the groove of the workpiece to be assembled. The loading steps of the O-ring are cumbersome and the operation efficiency is low. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art of O-ring loading steps being cumbersome and low operating efficiency, and to provide an automatic assembly machine for valve stem sealing rings, which simplifies the O-ring loading steps and improves the assembly efficiency of valve stems and O-rings.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] Provided is an automatic assembly machine for valve stem sealing rings, comprising a frame, a valve stem feeding assembly mounted on the frame, a valve stem loading assembly, an O-ring feeding assembly, an O-ring loading assembly, a turntable assembly, and a finished product unloading assembly; a tooling seat for clamping the valve stem is provided on the top of the turntable assembly; the O-ring feeding assembly and the O-ring loading assembly are each provided with two groups; the valve stem loading assembly is used to transfer the valve stem located at the valve stem feeding assembly to the tooling seat; the two groups of O-ring loading assemblies are respectively used to transfer and install the two O-rings located at the two groups of O-ring feeding assemblies to the tooling seat clamped at The first groove and the second groove of the valve stem of the tooling seat, the finished product unloading assembly is used to transfer the valve stem with the two O-rings installed; each group of the O-ring feeding assemblies includes a feeding mechanism and a support ring mechanism that receives the feeding mechanism, the feeding mechanism is used to transfer the O-ring to the support ring mechanism, and the support ring mechanism is used to support the O-ring; the two groups of the O-ring loading assemblies respectively take the O-rings from the two support ring mechanisms and respectively push the two O-rings into the first groove and the second groove of the valve stem clamped on the tooling seat.

[0007] The automatic assembly machine for valve stem sealing rings of the present invention, when in use, the valve stem feeding assembly conveys the valve stem in an orderly manner, the valve stem loading assembly loads the valve stem conveyed by the valve stem feeding assembly onto the tooling seat of the turntable assembly for clamping and fixing, and in the two groups of O-ring feeding assemblies, the two groups of feeding mechanisms respectively convey the O-rings to the support ring mechanism in an orderly manner, and the support ring mechanism performs a support action on the O-ring to stretch the O-ring, and the O-ring loading assembly respectively takes the O-rings away from the corresponding support ring mechanism and moves them above the valve stem of the tooling seat, wherein one group of O-ring loading assemblies pushes an O-ring into the first groove of the valve stem, and the other group of O-ring loading assemblies pushes another O-ring into the second groove of the valve stem, completing the automatic assembly of the valve stem and the O-ring, and the assembled valve stem is unloaded by the finished product unloading assembly. The utility model performs the ring supporting action through the ring supporting mechanism, and the O-ring feeding component only needs to take out the O-ring and push out the O-ring to complete the feeding of the O-ring, thereby simplifying the assembly steps and effectively improving the working efficiency.

[0008] Further, the supporting ring mechanism comprises a support plate, a pushing cylinder, a pushing plate, a distributing panel, a top ring cylinder, a pneumatic clamp, a supporting ring clamp jaw, a pneumatic finger and a baffle, the distributing panel is arranged on the top of the support plate, the distributing panel is provided with a receiving position and a receiving hole, the pushing cylinder and the top ring cylinder are arranged on the support plate, the receiving position is used for receiving the O-shaped sealing ring transferred from the feeding mechanism, the output end of the pushing cylinder is connected with the pushing plate, the pushing cylinder drives the pushing plate to push the O-shaped sealing ring from the receiving position to the receiving hole, the pneumatic clamp is installed on the output end of the top ring cylinder, the top ring cylinder is used for driving the pneumatic clamp to ascend and descend, the output end of the pneumatic clamp is connected with the supporting ring clamp jaw, the supporting ring clamp jaw is used for supporting the O-shaped sealing ring and performing the supporting ring action on the O-shaped sealing ring, the pneumatic finger is installed on the distributing panel, the two output ends of the pneumatic finger are respectively connected with two baffles, and the baffles are used for blocking the O-shaped sealing ring when the pneumatic clamp is separated from the O-shaped sealing ring. After the feeding mechanism transports the O-shaped sealing ring to the receiving position, the pushing cylinder drives the pushing plate to push the O-shaped sealing ring in the receiving position to the receiving hole and then resets, the top ring cylinder drives the pneumatic clamp and the supporting ring clamp jaw thereon to lift the O-shaped sealing ring, the pneumatic clamp drives the supporting ring clamp jaws to open the O-shaped sealing ring, and the O-shaped ring feeding assembly is waited to take the material; when the O-shaped ring feeding assembly takes the material, the pneumatic finger drives the baffles to close, the top ring cylinder drives the pneumatic clamp and the supporting ring clamp jaw thereon to move downwards, the baffles block the O-shaped sealing ring, and the O-shaped sealing ring is separated from the supporting ring clamp jaw.

[0009] Further, the O-ring loading assembly comprises a first loading vertical frame, a first loading cylinder, a first mounting plate, a second loading cylinder, a second mounting plate, a loading shaft, a third loading cylinder and a loading sleeve. The first loading vertical frame is mounted on the frame. The first loading cylinder is mounted on the first loading vertical frame. The output end of the first loading cylinder is connected with the first mounting plate to drive the first mounting plate to move horizontally. The second loading cylinder is mounted on the first mounting plate. The output end of the second loading cylinder is connected with the second mounting plate to drive the second mounting plate to move up and down. The loading shaft is mounted on the bottom of the second mounting plate. The loading sleeve is sleeved on the outer periphery of the loading shaft. The third loading cylinder is mounted on the second mounting plate. The output end of the third loading cylinder is connected with the loading sleeve to drive the loading sleeve to move up and down. The bottom of the loading shaft is provided with a insertion hole, which can be inserted by the valve rod. When the valve rod is inserted into the insertion hole, the second groove is located in the insertion hole and the first groove is located below the loading shaft, so as to ensure that the first O-ring is installed in the first groove. When the valve rod is inserted into the insertion hole, the second groove is located below the loading shaft and the second O-ring is installed in the second groove, so as to prevent the installation of the second O-ring from being failed due to the installation of the first O-ring in the second groove.

[0010] Further, the feeding mechanism comprises a first vibration disc assembly, an adjusting frame, a linear vibrator and a linear feeder tank. The first vibration disc assembly and the adjusting frame are mounted on the top of the frame. The linear vibrator is mounted on the top of the adjusting frame. The linear feeder tank is mounted on the top of the linear vibrator. One end of the linear feeder tank is connected with the output end of the vibration disc. The other end of the linear feeder tank is connected with the receiving position. The feeding mechanism can realize the orderly feeding of the O-ring.

[0011] Further, the valve rod feeding assembly comprises a second vibration disc assembly, a support, a first motor, a chain transmission mechanism, a driving roller, a driven roller and a conveying belt wound around the driving roller and the driven roller. The second vibration disc assembly and the support are mounted on the frame. The first motor is mounted on the support. The driving roller and the driven roller are rotatably mounted on the support. The output shaft of the first motor is in transmission connection with the driving roller through the chain transmission mechanism. The conveying belt is connected with the output end of the second vibration disc assembly.

[0012] Further, the valve stem feeding assembly comprises a second feeding vertical frame, a first sliding table cylinder, a third mounting plate, a fourth feeding cylinder, a fourth mounting plate, a material taking clamp cylinder and a material taking clamp, the second feeding vertical frame is installed on the frame, the first sliding table cylinder is installed on the second feeding vertical frame, the output end of the first sliding table cylinder is connected with the third mounting plate to drive the third mounting plate to move horizontally, the fourth feeding cylinder is installed on the third mounting plate, the output end of the fourth feeding cylinder is connected with the fourth mounting plate to drive the fourth mounting plate to move up and down, the material taking clamp cylinder is installed on the fourth mounting plate, and the output end of the material taking clamp cylinder is connected with the material taking clamp to drive the material taking clamp to clamp or release the valve stem. The valve stem feeding assembly can clamp the valve stem delivered by the valve stem feeding assembly and transfer the valve stem to the tool seat.

[0013] Further, the rotary disc assembly further comprises a second motor, a synchronous belt transmission mechanism, a cam divider and a rotary disc, the second motor and the cam divider are installed on the frame, the output shaft of the second motor is in transmission connection with the input shaft of the cam divider through the synchronous belt transmission mechanism, the output end of the cam divider is connected with the rotary disc, and the tool seat is fixedly arranged on the top of the rotary disc.

[0014] Further, the finished product feeding assembly comprises a feeding vertical frame, a second sliding table cylinder, a fifth mounting plate, a feeding cylinder, a sixth mounting plate, a feeding clamp cylinder, a feeding clamp and a feeding groove, the feeding vertical frame and the feeding groove are installed on the top of the frame, the second sliding table cylinder is installed on the feeding vertical frame, the output end of the second sliding table cylinder is connected with the fifth mounting plate to drive the fifth mounting plate to move horizontally, the feeding cylinder is installed on the fifth mounting plate, the output end of the feeding cylinder is connected with the sixth mounting plate to drive the sixth mounting plate to move up and down, the feeding clamp cylinder is installed on the sixth mounting plate, and the output end of the feeding clamp cylinder is connected with the feeding clamp to drive the feeding clamp to clamp or release the valve stem.

[0015] Further, the detection assembly and the defective product feeding assembly are arranged on the top of the frame, the valve stem feeding assembly, a group of the O-ring feeding assemblies, another group of the O-ring feeding assemblies, the detection assembly, the defective product feeding assembly and the finished product feeding assembly are sequentially arranged along the outer periphery of the rotary disc assembly. After the valve stem on the tool seat completes the corresponding work at the current work station, the valve stem can be transferred to the next work station for work through the rotary disc assembly, while the tool seat behind is synchronously transferred to the current work station for work, thereby improving the work efficiency.

[0016] Further, the detection assembly comprises a fixing frame, a light source and a camera fixed to the fixing frame, the fixing frame is arranged on the top of the rack, the light source is in a ring structure, and the camera is arranged in the middle of the light source. Through the detection assembly, the assembly condition of the valve rod can be identified and judged, and the finished product and the defective product can be distinguished.

[0017] Compared with the prior art, the utility model discloses the following beneficial effects:

[0018] 1. Simplify the feeding step of the O-shaped ring, improve the assembly efficiency of the valve rod and the O-shaped ring.

[0019] 2. The rotating disc assembly can simultaneously transfer the tool seat of different stations to the corresponding next station for operation, improving the operation efficiency.

[0020] 3. The detection assembly detects the assembly condition of the valve rod and the O-shaped sealing ring, and separates the defective product and the finished product. DRAWINGS

[0021] Figure 1 It is a structure schematic view of the automatic assembly machine of the valve rod sealing ring in the embodiment of the utility model.

[0022] Figure 2 It is a structure schematic view of the O-shaped ring feeding assembly in the embodiment of the utility model.

[0023] Figure 3 It is a structure schematic view of the supporting ring mechanism in the embodiment of the utility model.

[0024] Figure 4 It is a structure schematic view of the supporting ring clamping jaw in the embodiment of the utility model.

[0025] Figure 5 It is a perspective view of the O-shaped ring feeding assembly in the embodiment of the utility model.

[0026] Figure 6 It is a structure schematic view of the O-shaped ring feeding assembly in the embodiment of the utility model.

[0027] Figure 7 It is a structure schematic view of the valve rod feeding assembly in the embodiment of the utility model.

[0028] Figure 8 It is Figure 7 It is an enlarged view of the local part A.

[0029] Figure 9 It is a structure schematic view of the valve rod feeding assembly in the embodiment of the utility model.

[0030] Figure 10 It is a structure schematic view of the rotating disc assembly in the embodiment of the utility model.

[0031] Figure 11 It is the installation schematic view of the tool seat in the embodiment of the utility model;

[0032] Figure 12 It is the structural schematic view of the tool seat in the embodiment of the utility model;

[0033] Figure 13 It is the structural schematic view of the finished product blanking assembly in the embodiment of the utility model;

[0034] Figure 14 It is the structural schematic view of the detection assembly in the embodiment of the utility model.

[0035] In the drawing: 1 - rack; 2 - valve rod feeding assembly; 21 - second vibration disc assembly; 22 - support; 221 - first limit plate; 222 - second limit plate; 223 - material taking groove; 224 - detection unit; 225 - first needle type air cylinder; 2026 - second needle type air cylinder; 23 - first motor; 24 - chain transmission mechanism; 25 - driving roller; 26 - driven roller; 27 - conveying belt; 3 - valve rod feeding assembly; 31 - second feeding vertical frame; 32 - first sliding table air cylinder; 33 - third mounting plate; 34 - fourth feeding air cylinder; 35 - fourth mounting plate; 36 - material taking clamp jaw air cylinder; 37 - material taking clamp jaw; 4 - O-shaped ring feeding assembly; 41 - feeding mechanism; 411 - first vibration disc assembly; 412 - adjusting frame; 413 - linear vibrator; 414 - linear material groove; 42 - ring supporting mechanism; 421 - support plate; 422 - material pushing air cylinder; 423 - push plate; 424 - material distributing panel; 425 - ring top air cylinder; 426 - pneumatic clamp; 427 - ring supporting clamp jaw; 4271 - connecting block; 4272 - supporting block; 4273 - ring supporting block; 428 - pneumatic finger; 429 - baffle; 5 - O-shaped ring feeding assembly; 51 - first feeding vertical frame; 52 - first feeding air cylinder; 53 - first mounting plate; 54 - second feeding air cylinder; 55 - second mounting plate; 56 - feeding shaft; 57 - third feeding air cylinder; 58 - feeding sleeve; 59 - buffer; 6 - rotary disc assembly; 61 - second motor; 62 - synchronous belt transmission mechanism; 63 - rotary disc; 64 - tool seat; 641 - first fixed seat; 642 - second fixed seat; 643 - material placing groove; 644 - first material clamping groove; 645 - second material clamping groove; 7 - detection assembly; 71 - fixed frame; 72 - light source; 73 - camera; 8 - defective product blanking assembly; 9 - finished product blanking assembly; 91 - blanking vertical frame; 92 - second sliding table air cylinder; 93 - fifth mounting plate; 94 - blanking air cylinder; 95 - sixth mounting plate; 96 - blanking clamp jaw air cylinder; 97 - blanking clamp jaw; 98 - blanking groove; 10 - valve rod; 11 - O-shaped sealing ring. DETAILED DESCRIPTION

[0036] The utility model makes further explanation in combination with specific implementation. Among them, the drawing is only for example explanation, and the representation is only schematic diagram, and can not be understood as the limitation to this patent; in order to better explain the embodiment of the utility model, the drawing some components will be omitted, enlarged or reduced, and does not represent the size of actual product; for those skilled in the art, it is understandable that some well-known structures in the drawing and its description can be omitted.

[0037] The same or similar reference numerals in the drawings of the embodiments of the utility model correspond to the same or similar components; in the description of the utility model, it is understood that if the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right" and the like is based on the orientation or positional relationship shown in the drawing, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the positional relationship description terms in the drawing are only for example explanation, and can not be understood as the limitation to this patent, for the ordinary skilled in the art, the specific meaning of the above terms can be understood according to the specific situation.

[0038] Embodiment one

[0039] The embodiment is the first embodiment of the automatic assembly machine of valve rod sealing ring, as shown in Figure 1 、 Figure 10 and Figure 11 , including frame 1, valve rod feeding assembly 2, valve rod feeding assembly 3, O-ring feeding assembly 4, O-ring feeding assembly 5, carousel assembly 6 and finished product discharge assembly 9 arranged on frame 1;The top of carousel assembly 6 is provided with a tool holder 64 for clamping valve rod 10;O-ring feeding assembly 4, O-ring feeding assembly 5 are provided with two groups respectively;Valve rod feeding assembly 3 is used to transfer valve rod 10 located in valve rod feeding assembly 2 to tool holder 64;Two groups of O-ring feeding assembly 5 are respectively used to transfer and install two O-shaped sealing rings 11 located in two groups of O-ring feeding assembly 4 to the first groove and the second groove of valve rod 10 clamped in tool holder 64, and finished product discharge assembly 9 is used to move valve rod 10 with two O-shaped sealing rings 11 installed out of material;Each group of O-ring feeding assembly 4 includes feeding mechanism 41 and supporting ring mechanism 42 of feeding mechanism 41, and feeding mechanism 41 is used to transfer O-shaped sealing ring 11 to supporting ring mechanism 42, and supporting ring mechanism 42 is used to support O-shaped sealing ring 11 action;Two groups of O-ring feeding assembly 5 take O-shaped sealing ring 11 respectively at two supporting ring mechanisms 42 and push two O-shaped sealing rings 11 into the first groove and the second groove of valve rod 10 clamped in tool holder 64 respectively.

[0040] The automatic assembly machine of the valve stem sealing ring described above, when in use, the valve stem feeding assembly 2 orderly delivers the valve stem 10, the valve stem feeding assembly 3 feeds the valve stem 10 delivered by the valve stem feeding assembly 2 to the work fixture seat 64 clamped and fixed by the rotating disc assembly 6, in the two groups of O-ring feeding assemblies 4, the two groups of feeding mechanisms 41 orderly deliver the O-shaped sealing ring 11 to the ring supporting mechanism 42, the ring supporting mechanism 42 supports the O-shaped sealing ring 11 to open the O-shaped sealing ring 11, the O-ring feeding assembly 5 respectively removes the O-shaped sealing ring 11 from the corresponding ring supporting mechanism 42 and moves above the valve stem 10 of the work fixture seat 64, wherein one group of O-ring feeding assemblies 5 pushes one O-shaped sealing ring 11 into the first groove of the valve stem 10, and the other group of O-ring feeding assemblies 5 pushes another O-shaped sealing ring 11 into the second groove of the valve stem 10, to complete the automatic assembly of the valve stem 10 and the O-shaped sealing ring 11, and the finished product unloading assembly 9 unloads the valve stem 10 after the assembly is completed. In the embodiment, the ring supporting mechanism 42 supports the ring, the O-ring feeding assembly 5 only needs to take the O-shaped sealing ring 11 and push out the O-shaped sealing ring 11 to complete the feeding of the O-shaped sealing ring 11, which simplifies the assembly steps and effectively improves the work efficiency.

[0041] As Figure 3As shown, the supporting ring mechanism 42 comprises a support plate 421, a pushing cylinder 422, a pushing plate 423, a distributing plate 424, a top ring cylinder 425, a pneumatic clamp 426, a supporting ring clamp jaw 427, a pneumatic finger 428 and a baffle plate 429. The distributing plate 424 is arranged on the top of the support plate 421 and is provided with receiving positions and receiving holes. The pushing cylinder 422 and the top ring cylinder 425 are arranged on the support plate 421. The receiving positions are used to receive the O-rings 11 transferred from the feeding mechanism 41. The output end of the pushing cylinder 422 is connected with the pushing plate 423. The pushing cylinder 422 drives the pushing plate 423 to push the O-rings 11 from the receiving positions to the receiving holes. The output end of the top ring cylinder 425 is connected with the pneumatic clamp 426. The top ring cylinder 425 is used to drive the pneumatic clamp 426 to move up and down. The output end of the pneumatic clamp 426 is connected with the supporting ring clamp jaw 427. The supporting ring clamp jaw 427 is used to support the O-rings 11 and perform the supporting ring action. The pneumatic finger 428 is arranged on the distributing plate 424. The two output ends of the pneumatic finger 428 are connected with the two baffle plates 429 respectively. The baffle plates 429 are used to block the O-rings 11 when the pneumatic clamp 426 is separated from the O-rings 11. In the implementation, after the feeding mechanism 41 transfers the O-rings 11 to the receiving positions, the pushing cylinder 422 drives the pushing plate 423 to push the O-rings 11 in the receiving positions to the receiving holes and then resets. The top ring cylinder 425 drives the pneumatic clamp 426 and the supporting ring clamp jaw 427 on it to move up. After the supporting ring clamp jaw 427 lifts the O-rings 11, the pneumatic clamp 426 drives the supporting ring clamp jaw 427 to separate the O-rings 11, so that the O-rings 11 are ready to be taken by the O-ring feeding assembly 5. When the O-ring feeding assembly 5 takes the O-rings 11, the pneumatic finger 428 drives the baffle plates 429 to close, so that the baffle plates 429 abut against the bottom of the O-rings 11. When the top ring cylinder 425 drives the pneumatic clamp 426 and the supporting ring clamp jaw 427 on it to move down, the baffle plates 429 block the O-rings 11, so that the O-rings 11 are separated from the supporting ring clamp jaw 427.

[0042] Specifically, as shown in Figure 4 , the supporting ring clamp jaw 427 comprises a connecting block 4271, a supporting block 4272 and a supporting ring block 4273. The bottom of the supporting block 4272 is connected with the output end of the pneumatic clamp 426 through the connecting block 4271. The supporting ring block 4273 is arranged on the top of the supporting block 4272. A step is formed between the supporting ring block 4273 and the supporting block 4272. When the top ring cylinder 425 drives the supporting ring clamp jaw 427 to move up, the step lifts the O-rings 11. When the pneumatic clamp 426 drives the supporting ring clamp jaw 427 to perform the supporting ring action, the outer wall of the supporting ring block 4273 contacts the inner side of the O-rings 11 and separates the O-rings 11.

[0043] As shown in Figure 5 , Figure 6As shown, the O-ring loading assembly 5 includes a first loading vertical frame 51, a first loading cylinder 52, a first mounting plate 53, a second loading cylinder 54, a second mounting plate 55, a loading shaft 56, a third loading cylinder 57, and a loading sleeve 58. The first loading vertical frame 51 is mounted to the rack 1, the first loading cylinder 52 is mounted to the first loading vertical frame 51, the output end of the first loading cylinder 52 is connected to the first mounting plate 53 to drive the first mounting plate 53 to move horizontally, the second loading cylinder 54 is mounted to the first mounting plate 53, the output end of the second loading cylinder 54 is connected to the second mounting plate 55 to drive the second mounting plate 55 to move up and down, the loading shaft 56 is mounted to the bottom of the second mounting plate 55, the loading sleeve 58 is sleeved on the outer periphery of the loading shaft 56, the third loading cylinder 57 is mounted to the second mounting plate 55, the output end of the third loading cylinder 57 is connected to the loading sleeve 58 to drive the loading sleeve 58 to move up and down, and the bottom of the loading shaft 56 is provided with a insertion hole for inserting the valve stem 10. In implementation, for a group of O-ring loading assemblies 5, the first loading cylinder 52 drives the first mounting plate 53 and the loading shaft 56 thereon to move above the O-ring 11 above the receiving hole, the second loading cylinder 54 drives the second mounting plate 55 and the loading shaft 56 and the loading sleeve 58 thereon to move down, the loading shaft 56 is inserted into the O-ring 11 below the loading sleeve 58, the baffle 429 is driven by the pneumatic finger 428 to close, the baffle 429 abuts against the bottom of the O-ring 11, the top ring cylinder 425 drives the pneumatic clamp 426 and the support ring clamp jaw 427 thereon to move down, the baffle 429 blocks the O-ring 11, the O-ring 11 is separated from the support ring clamp jaw 427, the O-ring 11 rebounds to tightly hold the loading shaft 56 below the loading sleeve 58, and then the second loading cylinder 54 drives the second mounting plate 55 and the structural members thereon to move up, the first loading cylinder 52 drives the first mounting plate 53 to move, so that the loading shaft 56 is above the valve stem 10 on the tool seat 64, the second loading cylinder 54 drives the second mounting plate 55 to move down again, so that the valve stem 10 is inserted into the insertion hole at the bottom of the loading shaft 56, the second groove is located in the insertion hole, the first groove is located below the loading shaft 56, and the loading sleeve 58 is driven by the third loading cylinder 57 to move down, so that the O-ring 11 is pushed by the loading sleeve 58 to separate from the loading shaft 56 and is clamped into the first groove. For another group of O-ring loading assemblies 5, the above operation is repeated, except that when the second loading cylinder 54 drives the second mounting plate 55 to move down again, so that the valve stem 10 is inserted into the insertion hole at the bottom of the loading shaft 56, the second groove is located below the loading shaft 56, the O-ring 11 is pushed by the loading sleeve 58 to separate from the loading shaft 56 and is clamped into the second groove, and the assembly of the two O-rings 11 is completed.

[0044] As Figure 6As shown, the O-ring feeding assembly 5 further includes a buffer 59 mounted on the first feeding stand 51. The output end of the first feeding cylinder 52 is connected to one end of the first mounting plate 53, and the buffer 59 can abut against the other end of the first mounting plate 53. During operation, when the first feeding cylinder 52 pushes the first mounting plate 53 and the structure thereon to a stop, the buffer 59 converts the kinetic energy generated by the moving first mounting plate 53 into heat energy and releases it into the air, effectively stopping the object in a balanced manner.

[0045] like Figure 2 As shown, the feeding mechanism 41 includes a first vibration disk assembly 411, an adjustment frame 412, a linear vibrator 413, and a linear device trough 414. The first vibration disk assembly 411 and the adjustment frame 412 are installed on the top of the frame 1, the linear vibrator 413 is installed on the top of the adjustment frame 412, and the linear device trough 414 is installed on the top of the linear vibrator 413. One end of the linear device trough 414 is connected to the output end of the vibration disk, and the other end of the linear device trough 414 is connected to the receiving position. During implementation, the first vibration disk assembly 411 orderly feeds the O-ring 11 into the linear device trough 414, and the linear vibrator 413 drives the O-ring 11 to move forward along the linear device trough 414 to the receiving position, thereby realizing automatic feeding of the O-ring 11. Among them, the height of the linear vibrator 413 can be adjusted by the adjustment frame 412.

[0046] like Figure 10 、 Figure 11 As shown, the turntable assembly 6 also includes a second motor 61, a synchronous belt transmission mechanism 62, a cam divider and a turntable 63. The second motor 61 and the cam divider are installed on the frame 1. The output shaft of the second motor 61 is connected to the input shaft of the cam divider through the synchronous belt transmission mechanism 62. The output end of the cam divider is connected to the turntable 63, and the tooling seat 64 is fixed on the top of the turntable 63. During implementation, the second motor 61 drives the cam divider through the synchronous belt transmission mechanism 62, so that the turntable 63 and the tooling seat 64 thereon rotate a certain angle, and the tooling seat 64 rotates to the corresponding work station to load the valve stem 10, load the O-ring 11 and unload the valve stem 10. Specifically, as Figure 12 As shown, a first fixed seat 641 and a second fixed seat 642 are provided on the top of the tooling seat 64, and a material feeding groove 643 is formed between the first fixed seat 641 and the second fixed seat 642. The first fixed seat 641 is provided with a first clamping groove 644 connected to the material feeding groove 643, and the second fixed seat 642 is provided with a second clamping groove 645 connected to the material feeding groove 643. When the valve stem loading assembly 3 fixes the valve stem 10 on the tooling seat 64, the valve stem 10 is aligned between the first clamping groove 644 and the second clamping groove 645 and moves down into the material feeding groove 643, and the first clamping groove 644 and the second clamping groove 645 cooperate to clamp the valve stem 10 to prevent the valve stem 10 from moving during the rotation of the turntable 63.

[0047] As shown in Figure 13 , the finished product unloading assembly 9 includes an unloading stand 91, a second sliding table cylinder 92, a fifth mounting plate 93, an unloading cylinder 94, a sixth mounting plate 95, an unloading clamp cylinder 96, an unloading clamp 97 and an unloading groove 98. The unloading stand 91 and the unloading groove 98 are mounted on the top of the rack 1. The second sliding table cylinder 92 is mounted on the unloading stand 91. The output end of the second sliding table cylinder 92 is connected with the fifth mounting plate 93 to drive the fifth mounting plate 93 to move horizontally. The unloading cylinder 94 is mounted on the fifth mounting plate 93. The output end of the unloading cylinder 94 is connected with the sixth mounting plate 95 to drive the sixth mounting plate 95 to move up and down. The unloading clamp cylinder 96 is mounted on the sixth mounting plate 95. The output end of the unloading clamp cylinder 96 is connected with the unloading clamp 97 to drive the unloading clamp 97 to clamp or release the valve stem 10. After the valve stem 10 on the rotating disc assembly 6 is installed with the sealing ring in the first groove and the second groove, the second sliding table cylinder 92 drives the fifth mounting plate 93 and the structure thereon to move, so that the unloading clamp 97 is located above the valve stem 10. Then the unloading cylinder 94 drives the sixth mounting plate 95 and the structure thereon to move down, so that the unloading clamp 97 moves down to the sides of the valve stem 10. The unloading clamp cylinder 96 drives the unloading clamp 97 to grab the valve stem 10. Then the unloading cylinder 94 drives the unloading clamp 97 and the valve stem 10 to move up. The second sliding table cylinder 92 drives the unloading clamp 97 and the valve stem 10 to move to above the unloading groove 98. The unloading clamp cylinder 96 drives the unloading clamp 97 to release the valve stem 10. The valve stem 10 falls into the unloading groove 98 to achieve finished product unloading.

[0048] Embodiment two

[0049] This embodiment is the second embodiment of the automatic assembly machine for valve stem sealing ring. This embodiment is similar to the first embodiment. The difference is that, as shown in Figure 7 , Figure 8 , the valve stem feeding assembly 2 includes a second vibration disc assembly 21, a support 22, a first motor 23, a chain transmission mechanism 24, a driving roller 25, a driven roller 26 and a conveying belt 27 winding around the driving roller 25 and the driven roller 26. The second vibration disc assembly 21 and the support 22 are mounted on the rack 1. The first motor 23 is mounted on the support 22. The driving roller 25 and the driven roller 26 are rotatably mounted on the support 22. The output shaft of the first motor 23 is in transmission connection with the driving roller 25 through the chain transmission mechanism 24. The conveying belt 27 is in butt joint with the output end of the second vibration disc assembly 21. In implementation, the second vibration disc assembly 21 orderly sends the valve stem 10 onto the conveying belt 27. The first motor 23 drives the driving roller 25 to rotate through the chain transmission mechanism 24, so as to move the conveying belt 27 and the driven roller 26. The valve stem 10 is transported through the conveying belt 27.

[0050] Specifically, as shown in Figure 7 , Figure 8As shown, the valve stem feeding assembly 2 further comprises a first limiting plate 221 and a second limiting plate 222 mounted on both sides of the support 22, a conveying groove for only one valve stem 10 is formed between the first limiting plate 221 and the second limiting plate 222, and a material taking groove 223 is formed in the conveying groove, the first limiting plate 221 is provided with a detection unit 224 for detecting the valve stem 10 in the material taking groove 223, the second limiting plate 222 is provided with a first needle cylinder 225 and a second needle cylinder 226, the output end of the first needle cylinder 225 and the output end of the second needle cylinder 226 can be located at the front end and the rear end of the valve stem 10 in the material taking groove 223 respectively. In implementation, the conveying belt 27 transports the valve stem 10 to the conveying groove, when the valve stem 10 is transported to the material taking groove 223, the detection unit 224 detects the valve stem 10, the first needle cylinder 225 at the front end of the valve stem 10 acts to block the valve stem 10 in the material taking groove 223, the second needle cylinder 226 at the rear end of the valve stem 10 acts to separate the valve stem 10 in the material taking groove 223 from the valve stem 10 behind, and the valve stem 10 in the material taking groove 223 waits to be taken away by the valve stem feeding assembly 3.

[0051] As shown, Figure 9 The valve stem feeding assembly 3 comprises a second feeding stand 31, a first sliding table cylinder 32, a third mounting plate 33, a fourth feeding cylinder 34, a fourth mounting plate 35, a material taking clamp cylinder 36 and a material taking clamp 37, the second feeding stand 31 is mounted on the rack 1, the first sliding table cylinder 32 is mounted on the second feeding stand 31, the output end of the first sliding table cylinder 32 is connected with the third mounting plate 33 to drive the third mounting plate 33 to move horizontally, the fourth feeding cylinder 34 is mounted on the third mounting plate 33, the output end of the fourth feeding cylinder 34 is connected with the fourth mounting plate 35 to drive the fourth mounting plate 35 to move up and down, the material taking clamp cylinder 36 is mounted on the fourth mounting plate 35, the output end of the material taking clamp cylinder 36 is connected with the material taking clamp 37 to drive the material taking clamp 37 to clamp or release the valve stem 10. In implementation, the first sliding table cylinder 32 drives the third mounting plate 33 and the material taking clamp 37 thereon to move horizontally, so that the material taking clamp 37 is located above the valve stem 10 in the material taking groove 223, the fourth feeding cylinder 34 drives the material taking clamp cylinder 36 to move down, the material taking clamp cylinder 36 drives the material taking clamp 37 to clamp the valve stem 10, the fourth feeding cylinder 34 drives the material taking clamp 37 and the valve stem 10 to move up, the first sliding table cylinder 32 drives the material taking clamp 37 to move horizontally to above the tool seat 64 on the rotary table assembly 6, the fourth feeding cylinder 34 drives the material taking clamp 37 and the valve stem 10 to move down to the material placing groove 643 of the tool seat 64 again, the valve stem 10 is limited by the first material clamping groove 644 and the second material clamping groove 645, the material taking clamp cylinder 36 drives the material taking clamp 37 to release the valve stem 10, the fourth feeding cylinder 34 drives the material taking clamp cylinder 36 and the material taking clamp 37 to move up, and the valve stem feeding assembly 3 is reset to wait for feeding of the next valve stem 10.

[0052] Example Three

[0053] The third embodiment of the automatic assembly machine for valve stem sealing ring is similar to the second embodiment, but differs in that, as shown in Figure 1 the detection assembly 7 and the defective product discharging assembly 8 are arranged on the top of the rack 1, the valve stem feeding assembly 3, the first group of O-ring feeding assemblies 5, the second group of O-ring feeding assemblies 5, the detection assembly 7, the defective product discharging assembly 8 and the finished product discharging assembly 9 are sequentially arranged along the outer periphery of the turntable assembly 6. Specifically, the defective product discharging assembly 8 has the same structure as the finished product discharging assembly 9, and the top of the turntable 63 is provided with six tool holders 64, as shown in Figure 11 corresponding to the feeding station of the valve stem 10, the feeding station of the first O-ring 11, the feeding station of the second O-ring 11, the detection station, the defective product discharging station and the finished product discharging station. In implementation, the turntable 63 and the tool holders 64 thereon are rotated at a fixed angle by the cam divider, so that the tool holders 64 correspond to different stations. Specifically, taking one of the tool holders 64 as an example, the valve stem feeding assembly 2 feeds the valve stem 10, and the valve stem feeding assembly 3 feeds the valve stem 10 to the tool holder 64 at the valve stem feeding station; the turntable 63 drives the tool holder 64 to rotate to the feeding station of the first O-ring 11, the first group of O-ring feeding assemblies 4 feed the O-ring 11, and the O-ring feeding assemblies 5 take the O-ring 11 and install it in the first groove of the valve stem 10; the turntable 63 drives the tool holder 64 to rotate to the feeding station of the second O-ring 11, the other group of O-ring feeding assemblies 4 feed the O-ring 11, and the O-ring feeding assemblies 5 take the O-ring 11 and install it in the second groove of the valve stem 10; the turntable 63 drives the tool holder 64 to rotate to the detection station, and the detection assembly 7 detects whether the valve stem 10 is assembled with two O-rings 11; if not, the turntable 63 drives the tool holder 64 to rotate to the defective product discharging station, and the defective product discharging assembly 8 discharges the valve stem 10; if yes, the turntable 63 drives the tool holder 64 to rotate to the finished product discharging station, and the finished product discharging assembly 9 discharges the valve stem 10 assembled. After the valve stem 10 on the tool holder 64 completes the corresponding work at the current station, it can be rotated by the turntable 63 to transfer the current tool holder 64 to the next station, while the tool holders 64 behind it are synchronously transferred to the current station for work, improving the work efficiency.

[0054] As shown in Figure 14 the detection assembly 7 includes a fixed frame 71, and a light source 72 and a camera 73 fixed to the fixed frame 71, the fixed frame 71 is arranged on the top of the rack 1, the light source 72 has a ring structure, and the camera 73 is arranged in the middle of the light source 72. In implementation, the valve stem 10 is illuminated by the light source 72, and the valve stem 10 is photographed and recognized by the camera 73 to determine defective products or good products.

[0055] In the specific contents of the above specific embodiments, each technical feature can be combined arbitrarily without contradiction, and in order to make the description simple, all possible combinations of the above technical features are not described, however, as long as the combination of the technical features does not exist contradiction, it should be considered as the scope of the description.

[0056] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. An automatic assembly machine for valve stem sealing rings, comprising a frame (1), a valve stem feeding assembly (2) mounted on the frame (1), a valve stem loading assembly (3), an O-ring feeding assembly (4), an O-ring loading assembly (5), a turntable assembly (6) and a finished product unloading assembly (9); a tooling seat (64) for clamping the valve stem (10) is provided on the top of the turntable assembly (6); the O-ring feeding assembly (4) and the O-ring loading assembly (5) are respectively provided with two groups; the valve stem loading assembly (3 ) is used to transfer the valve stem (10) located at the valve stem feeding assembly (2) to the tooling seat (64); the two groups of the O-ring feeding assemblies (5) are used to transfer and install the two O-rings (11) located at the two groups of the O-ring feeding assemblies (4) to the first groove and the second groove of the valve stem (10) clamped on the tooling seat (64), and the finished product unloading assembly (9) is used to transfer the valve stem (10) on which the two O-rings (11) are installed; it is characterized in that Each group of the O-ring feeding components (4) includes a feeding mechanism (41) and a support ring mechanism (42) receiving the feeding mechanism (41), wherein the feeding mechanism (41) is used to transfer the O-ring (11) to the support ring mechanism (42), and the support ring mechanism (42) is used to support the O-ring (11); the two groups of the O-ring feeding components (5) respectively take the O-ring (11) from the two support ring mechanisms (42) and respectively push the two O-rings (11) into the first groove and the second groove of the valve stem (10) clamped on the tooling seat (64).

2. The automatic assembly machine for valve stem sealing ring according to claim 1, characterized in that: The support ring mechanism (42) includes a support plate (421), a push cylinder (422), a push plate (423), a material distribution panel (424), a top ring cylinder (425), a pneumatic clamp (426), a support ring clamp (427), a pneumatic finger (428) and a baffle (429), wherein the material distribution panel (424) is arranged on the top of the support plate (421), and the material distribution panel (424) is provided with a receiving position and a receiving hole, the material distribution cylinder (422) and the top ring cylinder (425) are installed on the support plate (421), and the receiving position is used to receive the O-ring (11) transmitted from the feeding mechanism (41), the output end of the material distribution cylinder (422) is connected to the push plate (423), and the material distribution cylinder (422) drives the push plate (423) to push the O-ring The sealing ring (11) is pushed from the receiving position to the receiving hole, the pneumatic clamp (426) is installed on the output end of the top ring cylinder (425), the top ring cylinder (425) is used to drive the pneumatic clamp (426) to rise and fall, the output end of the pneumatic clamp (426) is connected to the support ring clamp (427), the support ring clamp (427) is used to support the O-type sealing ring (11) and perform a support ring action on the O-type sealing ring (11), the pneumatic finger (428) is installed on the material distribution panel (424), the two output ends of the pneumatic finger (428) are respectively connected to the two baffles (429), and the baffles (429) are used to block the O-type sealing ring (11) when the pneumatic clamp (426) is separated from the O-type sealing ring (11).

3. The automatic assembly machine for valve stem sealing ring according to claim 2, characterized in that: The O-ring feeding assembly (5) comprises a first feeding stand (51), a first feeding cylinder (52), a first mounting plate (53), a second feeding cylinder (54), a second mounting plate (55), a feeding shaft (56), a third feeding cylinder (57) and a feeding sleeve (58), wherein the first feeding stand (51) is mounted on the frame (1), the first feeding cylinder (52) is mounted on the first feeding stand (51), the output end of the first feeding cylinder (52) is connected to the first mounting plate (53) to drive the first mounting plate (53) to move laterally, and the second feeding cylinder (54) is mounted on the first The mounting plate (53) is provided, the output end of the second feeding cylinder (54) is connected to the second mounting plate (55) to drive the second mounting plate (55) to rise and fall, the feeding shaft (56) is installed at the bottom of the second mounting plate (55), the feeding sleeve (58) is sleeved on the outer periphery of the feeding shaft (56), the third feeding cylinder (57) is installed on the second mounting plate (55), the output end of the third feeding cylinder (57) is connected to the feeding sleeve (58) to drive the feeding sleeve (58) to rise and fall, and a socket is provided at the bottom of the feeding shaft (56), and the socket can be used for the valve stem (10) to be inserted.

4. The automatic assembly machine for valve stem sealing ring according to claim 2, characterized in that: The feeding mechanism (41) comprises a first vibration disk assembly (411), an adjustment frame (412), a linear vibrator (413) and a linear device trough (414); the first vibration disk assembly (411) and the adjustment frame (412) are mounted on the top of the frame (1); the linear vibrator (413) is mounted on the top of the adjustment frame (412); the linear device trough (414) is mounted on the top of the linear vibrator (413); one end of the linear device trough (414) is connected to the output end of the vibration disk, and the other end of the linear device trough (414) is docked with the receiving position.

5. The automatic assembly machine for valve stem sealing ring according to claim 1, characterized in that: The valve stem feeding assembly (2) includes a second vibration disk assembly (21), a bracket (22), a first motor (23), a chain transmission mechanism (24), an active roller (25), a driven roller (26), and a conveyor belt (27) wound around the active roller (25) and the driven roller (26); the second vibration disk assembly (21) and the bracket (22) are mounted on the frame (1); the first motor (23) is mounted on the bracket (22); the active roller (25) and the driven roller (26) are rotatably mounted on the bracket (22); the output shaft of the first motor (23) is transmission-connected to the active roller (25) through the chain transmission mechanism (24); and the conveyor belt (27) is docked with the output end of the second vibration disk assembly (21).

6. The automatic assembly machine for valve stem sealing ring according to claim 1, characterized in that: The valve stem feeding assembly (3) comprises a second feeding stand (31), a first slide cylinder (32), a third mounting plate (33), a fourth feeding cylinder (34), a fourth mounting plate (35), a material taking claw cylinder (36) and a material taking claw (37), wherein the second feeding stand (31) is mounted on the frame (1), the first slide cylinder (32) is mounted on the second feeding stand (31), and the output end of the first slide cylinder (32) is connected to the third mounting plate (33) to drive The third mounting plate (33) moves laterally, the fourth feeding cylinder (34) is mounted on the third mounting plate (33), the output end of the fourth feeding cylinder (34) is connected to the fourth mounting plate (35) to drive the fourth mounting plate (35) to move up and down, the material picking claw cylinder (36) is mounted on the fourth mounting plate (35), the output end of the material picking claw cylinder (36) is connected to the material picking claw (37) to drive the material picking claw (37) to clamp or release the valve stem (10).

7. The automatic assembly machine for valve stem sealing ring according to claim 1, characterized in that: The turntable assembly (6) further comprises a second motor (61), a synchronous belt transmission mechanism (62), a cam divider and a turntable (63); the second motor (61) and the cam divider are mounted on the frame (1); the output shaft of the second motor (61) is connected to the input shaft of the cam divider via the synchronous belt transmission mechanism (62); the output end of the cam divider is connected to the turntable (63); and the tooling seat (64) is fixedly arranged on the top of the turntable (63).

8. The automatic assembly machine for valve stem sealing ring according to claim 1, characterized in that: The finished product unloading assembly (9) comprises an unloading stand (91), a second slide cylinder (92), a fifth mounting plate (93), an unloading cylinder (94), a sixth mounting plate (95), an unloading clamp cylinder (96), an unloading clamp (97) and an unloading trough (98), wherein the unloading stand (91) and the unloading trough (98) are mounted on the top of the frame (1), the second slide cylinder (92) is mounted on the unloading stand (91), and the output end of the second slide cylinder (92) is connected to the fifth mounting plate ( 93) is connected to drive the fifth mounting plate (93) to move laterally, the unloading cylinder (94) is installed on the fifth mounting plate (93), the output end of the unloading cylinder (94) is connected to the sixth mounting plate (95) to drive the sixth mounting plate (95) to move up and down, the unloading jaw cylinder (96) is installed on the sixth mounting plate (95), the output end of the unloading jaw cylinder (96) is connected to the unloading jaw (97) to drive the unloading jaw (97) to clamp or release the valve stem (10).

9. The automatic assembly machine for valve stem sealing rings according to any one of claims 1 to 8, characterized in that: It also includes a detection component (7) and a defective product unloading component (8) installed on the top of the frame (1), and the valve stem loading component (3), a group of O-ring loading components (5), another group of O-ring loading components (5), the detection component (7), the defective product unloading component (8) and the finished product unloading component (9) are arranged in sequence along the outer circumference of the turntable component (6).

10. The automatic assembly machine for valve stem sealing ring according to claim 9, characterized in that: The detection component (7) comprises a fixing frame (71), a light source (72) and a camera (73) fixed to the fixing frame (71); the fixing frame (71) is arranged on the top of the frame (1); the light source (72) is an annular structure; and the camera (73) is arranged through the middle of the light source (72).

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