Automatic assembling device for valve rod sealing ring

Abstract

The invention discloses an automatic valve rod sealing ring assembling device which comprises a positioning mechanism, a sealing ring assembling mechanism and a sealing ring assembling mechanism, the positioning mechanism is provided with a rotary table capable of being rotatably arranged, a plurality of positioning holes are formed in the top face of the rotary table at intervals in a surrounding mode with the center of the rotary table as the circle point, and the positioning holes are used for vertically positioning valve rods; the storage mechanism is provided with a storage rod which is vertically arranged right above one of the positioning holes, and the storage rod is used for sleeving and storing a plurality of sealing rings; the clamping mechanism is arranged above the rotary table, and the clamping mechanism is provided with a first fixing clamp and a second fixing clamp which are arranged up and down in a spaced mode and used for clamping the material storage rods; and the material stirring mechanism is provided with a material stirring clamp which is arranged on one side of the material storage rod in a lifting mode, the output end of the material stirring clamp is clamped on the material storage rod between the first clamp and the second clamp or the sealing ring, and then the output end of the material stirring clamp moves downwards to push the sealing ring on the material storage rod downwards to be arranged on the valve rod in a sleeving mode.

Description

Technical Field

[0001] The present invention relates to the technical field of valve stem assembly, and more specifically, to an automatic device for assembling a valve stem sealing ring. Background Art

[0002] The position of the sealing ring on the valve stem is very important. It is usually located in a specially designed groove within the valve cover, which can provide effective sealing without affecting the normal operation of the valve stem.

[0003] In the prior art, the assembly structure of the O-shaped rubber sealing ring on the valve core with the publication number of CN201220530323.8 includes a base, on which a plurality of pins are provided. The valve stem is sleeved on the pins, and a mandrel for sleeving the sealing ring is also provided above the valve stem. During assembly, the sealing ring on the mandrel is manually slid down and sleeved on the mandrel. However, the above operation requires manually sleeving the mandrel on the valve stem, manually holding and stabilizing the mandrel, and then pulling the sealing ring downwards. The operation is rather troublesome and unstable, resulting in low efficiency. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide an automatic device for assembling a valve stem sealing ring with stable positioning and high assembly efficiency.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] An automatic device for assembling a valve stem sealing ring, comprising: A positioning mechanism, having a rotatable turntable, on the top surface of which a plurality of positioning holes are provided at intervals around the center of the turntable for vertically positioning the valve stem; A storage mechanism, having a storage rod vertically arranged directly above one of the positioning holes for sleeving and storing a plurality of sealing rings; A clamping mechanism, arranged above the turntable, having a first fixed clamp and a second fixed clamp which are arranged at intervals up and down for clamping the storage rod; and A feeding mechanism, having a feeding clamp which can be lifted and lowered on one side of the storage rod, the output end of the feeding clamp being stuck on the storage rod or the sealing ring between the first clamp and the second clamp, and then moving downwards to push the sealing ring on the storage rod down and sleeve it on the valve stem.

[0007] Compared with the prior art, the present invention has at least the following beneficial effects: Multiple valve stems can be positioned and installed through several holes to ensure the stability of the valve stem position; multiple sealing rings can be stored at the same time through the storage rod; the first fixing fixture and the second fixing fixture can clamp the storage rod to ensure that the storage rod is in a vertical and stable state; when assembled, the turntable is rotated to rotate the valve stems in the positioning holes to the bottom of the storage rod in turn. At this time, the second fixing fixture is clamped on the storage rod, and the material-dispensing fixture is clamped on the storage rod or the sealing ring above the second fixing fixture. The second fixing fixture is then released to The clamp moves down to avoid, and then the first clamp is clamped on the storage rod above the material-dispensing clamp to always ensure the stability of the storage rod position. Finally, the material-dispensing clamp moves down to shift the sealing ring down and put it on the valve stem, thereby realizing automatic assembly of the sealing ring. Then, the turntable rotates to drive the next valve stem to be transferred to the bottom of the material-dispensing rod, and the first clamp is released. Due to the action of gravity, the sealing ring on the storage rod will move down, and the material-dispensing clamp moves up to clamp and reset. This is repeated to realize continuous assembly of the sealing ring, which greatly improves the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the coordination of the positioning mechanism, the clamping mechanism, the material shifting mechanism and the material storage rod of the present invention; Figure 3 This is a cross-sectional view of the positioning hole and the ejection mechanism of the present invention; Figure 4 is a cross-sectional view of the positioning fixture of the present invention; Figure 5 It is a schematic diagram of the cooperation between the clamping mechanism and the storage rod of the present invention; Figure 6 Schematic diagram of the material shifting fixture of the present invention; Figure 7 This is a schematic diagram of the material-diverting fixture of the present invention being assembled into the sealing ring; Figure 8 This is a schematic diagram of the material-dispensing fixture of the present invention before the sealing ring is assembled; Figure 9 It is a schematic diagram of the blanking mechanism of the present invention.

[0009] Description of the numbers in the figure: 1. Positioning mechanism; 11. Turntable; 111. Mounting hole; 12. Positioning hole; 121. Step; 122. Avoidance hole; 13. Positioning jig; 131. Fixed sleeve; 132. Guide post; 1321. Limit head; 133. Spring; 14. Support base; 15. Rotary drive assembly; 2. Valve rod; 3. Material storage mechanism; 31. Material storage rod; 32. Frame; 321. Support member; 322. Fixed frame; 33. Clamping seat; 34. Tightening driver; 35. Counterweight; 36. Sensor; 37. Alarm; 4. Sealing ring; 5. Clamping mechanism; 51. First fixed clamp; 52. Second fixed clamp; 53. First moving member; 54. Second moving member; 6. Material feeding mechanism; 61. Material feeding jig; 611. Clip; 6112. Card slot; 612. Elastic member; 62. Support frame; 63. Lifting drive member; 7. Material ejecting mechanism; 71. Material ejecting driver; 72. Ejector rod; 8. Material discharging mechanism; 81. Drive assembly; 82. Material discharging jig; 821. Fixed plate; 8211. Protrusion; 822. Swing rod; 8221. Clamping portion; 823. Pusher driver. Detailed implementation manners

[0010] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0011] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and do not limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0012] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0013] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0014] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0015] In the present application, "and / or" is merely a description of the association relationship between associated objects, indicating that three relationships may exist; for example, A and / or B may represent: the sole existence of A, the simultaneous existence of A and B, and the sole existence of B. Additionally, the character " / " in this text generally represents an "or" relationship between the associated objects before and after.

[0016] It should be noted that in the present application, words such as "in some embodiments", "exemplarily", "for example", etc. are used to give examples, illustrations, or explanations. Any embodiment or design solution described as "in some embodiments", "exemplarily", "for example" in the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "in some embodiments", "exemplarily", "for example" is intended to present relevant concepts in a specific manner, meaning that the specific features, structures, or characteristics described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the above words at various positions in the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0017] Reference Figures 1-3, An automatic assembling device for the sealing ring 4 on the valve stem 2, comprising: a positioning mechanism 1, a material storage mechanism 3, a clamping mechanism 5 and a material pushing mechanism 6. The positioning mechanism 1 has a rotatable turntable 11, and a plurality of positioning holes 12 are arranged on the top surface of the turntable 11 at intervals around the center of the turntable 11. The positioning holes 12 are used for vertically positioning the valve stem 2. The material storage mechanism 3 has a material storage rod 31 vertically arranged directly above one of the positioning holes 12. The material storage rod 31 is used for sleeving and storing a plurality of sealing rings 4. The clamping mechanism 5 is arranged above the turntable 11. The clamping mechanism 5 has a first fixed clamp 51 and a second fixed clamp 52 which are arranged at intervals up and down and are used for clamping the material storage rod 31. The material pushing mechanism 6 has a material pushing clamp 61 which is arranged on one side of the material storage rod 31 and can be lifted and lowered. The output end of the material pushing clamp 61 is stuck on the material storage rod 31 or the sealing ring 4 between the first clamp and the second clamp, and then moves down to push the sealing ring 4 on the material storage rod 31 down and sleeve it on the valve stem 2.

[0018] It can be understood that the rotatable setting of the turntable 11 can be realized by a stepping motor or a servo motor, and a indexing device can also be used, etc., but not limited to this. The positioning hole 12 is a component for positioning the valve stem 2. For example, it can be an indented hole structure, or a fixture structure with holes, etc., but not limited to this. The material storage rod 31 is a component for sleeving and storing the sealing rings 4. Corresponding to the shape of the sealing ring 4, it can correspondingly adopt a round rod, a square rod, etc., but not limited to this. The first fixed clamp 51, the second fixed clamp 52 and the material pushing clamp 61 are all clamping components. For example, they can be pneumatic clamps or electric clamps, etc., but not limited to this. The material pushing clamp 61 can clamp on the sealing ring 4 and directly drive the sealing ring 4 to move down. It can also clamp on the material storage rod 31, but a position for one or more sealing rings 4 needs to be reserved between the clamping end of the material pushing clamp 61 and the clamping end of the second clamp. In this way, it can be ensured that there is a sealing ring 4 below the material pushing clamp 61. When the material pushing clamp 61 moves down, it will push the sealing ring 4 down along the material storage rod 31 onto the valve stem 2.

[0019] With such a setting, multiple valve stems 2 can be positioned and installed through a plurality of positioning holes, ensuring the stability of the position of the valve stem 2; multiple sealing rings 4 can be stored simultaneously through the material storage rod 31; the first fixed clamp 51 and the second fixed clamp 52 can clamp and fix the material storage rod 31 to ensure that the material storage rod 31 is in a vertically stable state; during the assembling process, by rotating the turntable 11, the valve stem 2 in the positioning hole 12 is successively rotated to directly below the material storage rod 31. At this time, refer to Figure 8 , the second fixed clamp 52 clamps on the material storage rod 31, and the material pushing clamp 61 clamps on the material storage rod 31 or the sealing ring 4 above the second fixed clamp 52. Refer to Figure 7, the second fixed fixture 52 releases the downward movement of the feeding fixture 61 for avoidance. Immediately afterwards, the first fixture clamps on the storage rod 31 above the feeding fixture 61 to always ensure the stability of the position of the storage rod 31. Finally, the feeding fixture 61 moves downward to push the sealing ring 4 downward and sleeve it on the valve stem 2, realizing the automatic assembly work of the sealing ring 4. Then, the turntable 11 rotates to drive the next valve stem 2 to move below the storage rod 31. The first fixture releases. Due to the action of gravity, the sealing ring 4 on the storage rod 31 will move downward. At the same time, the feeding fixture 61 moves upward to clamp and reset. Repeating this way can realize the continuous assembly work of the sealing ring 4, greatly improving the assembly efficiency.

[0020] In some embodiments, referring to Figure 3 , the positioning hole 12 penetrates through the turntable 11 up and down, and a step 121 for carrying and limiting the bottom of the valve stem 2 is arranged inside, and an avoidance hole 122 is arranged on the step 121; the automatic assembly device further includes a jacking mechanism 7 arranged below the positioning hole 12 for jacking the valve stem 2 in the positioning hole 12 upward to abut against the bottom of the storage rod 31.

[0021] It can be understood that the step 121 is a component for carrying the valve stem 2. It can be formed by the inner contraction of the lower half of the positioning hole 12, or one or more protrusions can be arranged on the inner wall of the positioning hole 12, etc., but not limited to this. However, the step 121 cannot be completely closed and a space for the jacking mechanism 7 to pass through needs to be left, so the avoidance hole 122 is arranged. The jacking mechanism 7 can adopt a spring 133 loading mechanism, a direct pushing structure of a pneumatic or electric push rod, or a lever structure, etc., but not limited to this.

[0022] With such a setting, through the setting of the step 121, the valve stem 2 can be prevented from completely slipping downward from the positioning hole 12; through the jacking mechanism 7, the valve stem 2 in the positioning hole can be jacked upward to the bottom of the storage rod 31, so that when the sealing ring 4 moves downward, it can be directly sleeved on the valve stem 2, improving the accuracy of the assembly of the sealing ring 4. Of course, the jacking mechanism 7 can retract and reset, so that the valve stem 2 moves downward and falls on the step 121 again.

[0023] Optionally, in some embodiments, referring to Figures 1-3 , the jacking mechanism 7 includes a jacking rod 72 arranged directly below the positioning hole 12, and a jacking driver 71 whose output end is connected to the jacking rod 72 for driving the jacking rod 72 to lift and lower.

[0024] It can be understood that the jacking rod 72 needs to be smaller than the diameter of the avoidance hole 122 so that the jacking rod 72 can pass through the avoidance hole 122 and abut against the valve stem 2. The jacking driver 71 can be arranged on the ground or other immovable components. The jacking driver 71 can adopt a cylinder or an electric push rod, etc., but not limited to this.

[0025] With such a setting, when the turntable 11 drives the positioning hole 12 to rotate above the ejector rod 72, the ejector driver 71 drives the ejector rod 72 to move upward and penetrate into the positioning hole 12 to push the valve rod 2 upward to the bottom of the storage rod 31.

[0026] In some embodiments, referring to Figure 2 and Figure 4 , a plurality of mounting holes 111 are arranged on the turntable 11 at intervals around the center of the turntable 11; the positioning mechanism 1 further includes: positioning jigs 13 detachably arranged in the plurality of mounting holes 111 one by one, and the positioning holes 12 are arranged on the positioning jigs 13.

[0027] It can be understood that since the valve rod 2 has different models, if the positioning hole 12 is directly arranged on the turntable 11, it will only be applicable to one model of the valve rod 2. The positioning jig 13 can be detachably installed by directly embedding it into the mounting hole 111 or fixed by a locking connector such as a bolt, but not limited thereto. Here, multiple sets of positioning jigs 13 can be prepared, and the positioning holes 12 on each set of positioning jigs 13 can be set corresponding to different specifications of the valve rod 2.

[0028] With such a setting, by replacing the positioning jig 13, it can be applicable to different models of the valve rod 2, improving the applicable range of the present invention.

[0029] Optionally, in some embodiments, referring to Figure 4 , the positioning jig 13 includes: a fixing sleeve 131, a guide post 132, and a spring 133. The fixing sleeve 131 is arranged in the mounting hole 111. The guide post 132 is vertically and guidingly engaged with the fixing sleeve 131, and a limiting head 1321 that can abut against the top of the fixing sleeve 131 is arranged at the top of the guide post 132. The spring 133 is sleeved on the guide post 132, and one end abuts against the bottom of the turntable 11 or the bottom of the fixing sleeve 131, and the other end is connected to the guide post 132 for rebounding the guide post 132. Among them, the positioning hole 12 is arranged at the top of the guide post 132, and the ejector rod 72 acts on the bottom of the guide post 132.

[0030] It can be understood that the fixing sleeve 131 and the guide post 132 are a combined component with vertical guiding cooperation. For example, the fixing sleeve 131 is a ring sleeve structure and is axially and guidingly engaged with the guide post 132. Of course, a sliding groove and slider can also be arranged on the fixing sleeve 131 and the guide post 132 for guiding cooperation, but not limited thereto. The other end of the spring 133 can be directly connected to the outer wall of the guide post 132, or a flange can be arranged at the bottom edge of the guide post 132 to abut the spring 133 against the flange, but not limited thereto. The limiting head 1321 is a component to prevent the guide post 132 from moving downward and slipping off, which can be a circular ring structure, or one or more bumps 8211 can be arranged on the outer circle of the top of the guide post 132, but not limited thereto.

[0031] With this arrangement, the upward push of the ejector pin 72 causes the guide post 132 to elastically move upward, thereby causing the valve stem 2 within the guide post 132 to move upward and rest against the bottom of the storage rod 31. When the ejector pin 72 moves downward and returns, the spring 133 automatically causes the guide post 132 to automatically move downward and return to its original position until the stopper 1321 abuts against the fixing sleeve 131. This provides more stable ejection and return of the valve stem 2.

[0032] In some embodiments, reference Figures 1-2 The positioning mechanism 1 further includes: a support base 14 and a rotation drive assembly 8115. The support base 14 is disposed below the turntable 11. The rotation drive assembly 8115 is disposed on the support base 14, and the power output end is connected to the center of the turntable 11 for driving the turntable 11 to rotate.

[0033] It is understood that the support base 14 is a supporting component, and may be, for example, a rod structure, a block structure, a frame structure, etc., but is not limited thereto. The rotation drive assembly 8115 needs to accurately control the rotation angle of the turntable 11, and may, for example, employ a stepper motor or a servo motor, and may also be precisely coordinated with a gear transmission structure, but is not limited thereto.

[0034] With such an arrangement, the rotary drive assembly 8115 can drive the turntable 11 to rotate, thereby accurately rotating the valve stem 2 on the turntable 11 to below the storage rod 31 in sequence.

[0035] In some embodiments, reference Figure 1 The storage mechanism 3 further includes: a frame 32 arranged on one side of the positioning mechanism 1 for fixing the top of the storage rod 31.

[0036] It is understandable that in order to fix the top of the storage rod 31, the frame 32 has a certain height, for example, a connecting arm structure with a bent top, or a bent rod structure, etc. can be adopted, but it is not limited thereto.

[0037] In this way, the top of the storage rod 31 can be fixed by the frame 32, so that the storage rod 31 can be kept in a vertical state. In conjunction with the clamping mechanism 5, the upper and lower ends of the storage rod 31 are fixed to ensure the vertical stability of the storage rod 31.

[0038] Optionally, in some embodiments, the frame 32 includes a support member 321 and a fixing frame 322. The support member 321 is disposed on one side of the positioning mechanism 1. The fixing frame 322 is disposed on the support member 321 and is located above the turntable 11. The top of the storage rod 31 is detachably fixed to the fixing frame 322.

[0039] It can be understood that the support member 321 is a component for installing and supporting the fixing frame 322, which can be, for example, a support rod structure, a frame structure, etc., but is not limited thereto. The fixing frame 322 can adopt a frame structure such as a cylinder or a square column extending above the turntable 11, but is not limited thereto. The fixing method of the storage rod 31 can be clamping with a fixture, screw locking, etc., but is not limited thereto.

[0040] With such a setting, since the fixing frame 322 is located above the turntable 11, it is convenient to fix the position of the storage rod 31, that is, the storage rod 31 is arranged above the turntable 11.

[0041] Optionally, in some embodiments, the storage mechanism 3 further includes: a clamping seat 33 and a tightening driver 34. The clamping seat 33 is arranged on the fixing frame 322 and is used for clamping the storage rod 31. The tightening driver 34 is arranged on the fixing frame 322, and the output end faces the base, and is used for tightly pressing the storage rod 31 against the clamping seat 33.

[0042] It can be understood that the tightening driver 34 can adopt telescopic driving such as a cylinder or an electric push rod. The clamping seat 33 can be a plate structure with a flat surface, and the output end of the corresponding tightening driver 34 is set as a V-shaped groove or an arc groove structure; of course, the clamping seat 33 can also be set with a V-shaped groove or an arc groove structure, and the output end plane of the tightening driver 34 is set, etc., but is not limited thereto.

[0043] With such a setting, when fixing the top of the storage rod 31, the side surface of the storage rod 31 near the top is attached to the clamping seat 33, and then the storage rod 31 is clamped on the clamping seat 33 by the extension of the output end of the tightening driver 34. When disassembling, this is achieved by the retraction of the tightening driver 34, and the disassembly of the storage rod 31 is completed. The disassembly and installation of the storage rod 31 are both relatively simple and fast. It is convenient for the feeding operation of the sealing ring 4.

[0044] In some embodiments, referring to Figures 2-3 , one end of the storage rod 31 close to the positioning hole 12 has a conical structure with a gradually increasing radius from top to bottom.

[0045] It can be understood that the diameter of the bottom of the storage rod 31 must be larger than the inner diameter of the sealing ring 4.

[0046] With such a setting, through the conical setting at the top of the storage rod 31, the downward movement of the sealing ring 4 can be limited. However, it does not affect the downward pushing of the sealing ring 4 by the feeding fixture 61.

[0047] Optionally, in some embodiments, referring to Figure 4 , a concave hole for embedding and cooperating with the valve stem 2 is arranged at the bottom of the storage rod 31.

[0048] It can be understood that the diameter of the concave hole needs to be larger than the diameter of the top of the valve stem 2.

[0049] With such a setting, after the valve stem 2 is pushed upward and embedded into the concave hole, there will be no offset between the valve stem 2 and the material storage rod 31, and the alignment is more stable. Moreover, a part of the top of the valve stem 2 is located in the concave hole, and after the sealing ring 4 is assembled, it can be directly sleeved on the valve stem 2.

[0050] Optionally, in some embodiments, referring to Figures 1-2 , a weight 35 for pressing down the sealing ring 4 is movably sleeved on the material storage rod 31.

[0051] It can be understood that the weight 35 can be a pipe structure or a ring sleeve structure, or some heavier metal blocks can be combined, etc., but not limited thereto.

[0052] With such a setting, when the sealing ring 4 at the bottom is assembled onto the valve stem 2, the weight 35 can press down the sealing ring 4 on the material storage rod 31 by its own weight, causing the sealing ring 4 to move downward, ensuring that the feeding fixture 61 can push against the sealing ring 4 every time.

[0053] In some embodiments, referring to Figure 1 , the material storage mechanism 3 further includes: a sensor 36 and an alarm 37. The sensor 36 is arranged on the fixed frame 322 and is located on one side close to the bottom of the material storage rod 31 for sensing the weight 35; the alarm 37 is electrically connected to the sensor 36; when the sensor 36 senses the weight 35, the alarm 37 is used for alarming.

[0054] It can be understood that the sensor 36 can be a laser sensor 36 or an electromagnetic sensor 36, etc., but not limited thereto. Of course, for the coordinated operation of the sensor 36 and the alarm 37, a control system is required for control work. Since this control method is relatively common, it will not be elaborated here too much. The alarm 37 can use light alarm, or sound alarm, or both structures, etc., but not limited thereto. The alarm 37 can be installed on the fixed frame 322 or on other components.

[0055] With such a setting, when the weight 35 moves downward to the corresponding sensor 36, it means that the sealing ring 4 on the material storage rod 31 is almost used up. The sensor 36 senses the weight 35 and triggers the alarm 37 to alarm, reminding the staff to timely load the sealing ring 4 onto the material storage rod 31.

[0056] In some embodiments, referring to Figure 2 and Figure 5, the clamping mechanism 5 further includes: a first moving member 53 and a second moving member 54 which are mounted on the fixing frame 322 or the support member 321 and are arranged at intervals in the up and down direction; the output ends of the first moving member 53 and the second moving member 54 are respectively connected to the first fixing clamp 51 and the second fixing clamp 52, so as to drive the first fixing clamp 51 and the second fixing clamp 52 to perform telescopic movement in the direction of the storage rod 31.

[0057] It can be understood that the first moving member 53 and the second moving member 54 are movable driving components. For example, electric push rods or cylinders can be used, but not limited to this.

[0058] With such a setting, referring to Figure 7 , when the first clamp needs to clamp the storage rod 31, the first moving member 53 can drive the first clamp to move towards the storage rod 31, and when it is not necessary to clamp, it drives the first clamp to retract away from the storage rod 31. Similarly, referring to Figure 8 , the second moving member 54 drives the second clamp to operate in the same way. In this way, when the dialing clamp 61 moves up and down, the dialing clamp 61 can be completely moved and avoided.

[0059] In some embodiments, referring to Figures 1-2 , the dialing mechanism 6 further includes: a support frame 62 and a lifting driving member 63. The support frame 62 is arranged on one side of the positioning mechanism 1. The lifting driving member 63 is arranged on the support frame 62. Wherein, the dialing clamp 61 is arranged at the output end of the lifting driving member and is driven by the lifting driving member 63 to move up and down.

[0060] It can be understood that the support frame 62 is a component for supporting and installing the lifting driving member 63. For example, it can be a rod structure, a plate structure, etc., but not limited to this. The lifting driving member 63 is a component for driving the dialing clamp 61 to move up and down. For example, it can be a cylinder or an electric push rod, etc., but not limited to this.

[0061] With such a setting, the support frame 62 can position and stabilize the entire dialing mechanism 6, and the lifting driving member 63 can automatically drive the dialing clamp 61 to move down to assemble the sealing ring 4, and drive the dialing clamp 61 to move up for reset clamping.

[0062] Optionally, in some embodiments, referring to Figure 6 , two relatively arranged clips 611 are arranged at the clamping end of the dialing clamp 61, and a clamping groove 6112 for being clamped with the storage rod 31 or the sealing ring 4 is arranged on the relative sides of the two clips 611; It is understood that the clip 611 is designed to be relatively thin so that it can pass through the gap between adjacent sealing rings 4 and be clamped on the storage rod 31, or it can be clamped on a single sealing ring 4. If the clamping groove 6112 is clamped on the storage rod 31, the clamping groove 6112 is configured to be of a size and shape that fits the storage rod 31; if the clamping groove 6112 is clamped on the sealing ring 4, the clamping groove 6112 is configured to be of a size and shape that fits the sealing ring 4.

[0063] In this way, the material-shifting clamp 61 can drive the two clamping pieces 611 to clamp together. Since the clamping piece 611 is thinner than the clamping end of the material-shifting clamp 61, it can clamp more accurately.

[0064] Optionally, in some embodiments, reference Figure 6 The clamping end of the material-dispensing fixture 61 or the two clamping pieces 611 are connected with an elastic member 612 for elastically clamping the two clamping pieces; It is understandable that the elastic member 612 can be a spring 133 or a rubber band, but is not limited thereto.

[0065] With such an arrangement, since the clip 611 needs to pass through the conical bottom of the material storage rod 31 during its downward movement, the two clips 611 will be stretched apart. If the material shifting fixture 61 always maintains the inconvenience of the clamping position, the clip 611 will be stuck on the material storage rod 31. Therefore, when the clip 611 moves downward, the material shifting fixture 61 can stop acting on the clip 611 and only clamp the two clips 611 together through the elastic member 612. In this way, when the clip 611 moves downward, the clip 611 can be stretched apart, and the elastic member 612 can ensure that the two clips 611 are always clamped. When the clip 611 needs to be clamped again, the clip 611 can be stretched apart by the material shifting fixture 61 and automatically clamped by the elastic member 612.

[0066] Optionally, in some embodiments, the material shifting fixture 61 is arranged opposite to the clamping mechanism 5 .

[0067] With such an arrangement, the positions of the material-shifting fixture 61 and the clamping mechanism 5 are more reasonably arranged, thereby reducing the interlacing of the material-shifting fixture 61 and the clamping mechanism 5 and causing disorder.

[0068] In some embodiments, reference Figure 1 and Figure 9 The automatic assembly device also includes a blanking mechanism 8 arranged on the support member 321 or the fixing frame 322 and located above the turntable 11. The blanking mechanism 8 is used to remove the valve stem 2 from the positioning hole 12 for blanking.

[0069] It is understandable that the unloading mechanism 8 can be driven by a robot, an XY axis drive assembly 81 , etc., in combination with a suction cup, a claw clamp, etc., but is not limited thereto.

[0070] Thus, when the valve stem 2 of the disc rotation drive group with the sealing ring 4 rotates to below the blanking mechanism 8, the blanking mechanism 8 starts to work and automatically removes the valve stem 2 on the turntable 11. Here, for the control of the blanking mechanism 8, a sensor 3 can be set on the blanking mechanism 8. When the sensor senses that the valve stem 2 is directly below it, the blanking work is carried out. As a whole, a PLC control system or the like can be used for the control work.

[0071] Optionally, in some embodiments, the blanking mechanism 8 includes: a driving component 81 and a blanking fixture 82. The driving component 81 is arranged on the support member 321 or the fixed frame 322 and has the function of driving in the horizontal and / or vertical directions. The blanking fixture 82 is arranged at the power output end of the driving component 81 and is used for clamping the valve stem 2 in the positioning hole 12.

[0072] It can be understood that the horizontal driving component 81 can adopt a cylinder, an electric push rod, a screw thread transmission, etc., singly or in combination, but not limited thereto. The blanking fixture 82 can adopt a pneumatic clamp, an electromagnet, etc., but not limited thereto.

[0073] With such a setting, the driving component 81 can drive the blanking fixture 82 to move to the position of the valve stem 2, and then the valve stem 2 is clamped by the blanking fixture 82. Then, the driving component 81 drives the blanking fixture 82 to take out the valve stem 2 and transfer it to other places.

[0074] Optionally, in some embodiments, the driving component 81 is a horizontal driving member; the blanking fixture 82 includes: a fixing plate 821, a swing rod 822 and a push rod driver 823. The fixing plate 821 is arranged at the output end of the horizontal driving member. A convex block 8211 is arranged on the side of the fixing plate 821 facing away from the horizontal driving member. The swing rod 822 is vertically movably arranged on the convex block 8211. The bottom of the swing rod 822 is bent away from the fixing plate 821 and is provided with a clamping portion 8221 for clamping the valve stem 2; the push rod driver 823 is arranged on the fixing plate 821, and the output end is movably connected to the end of the swing rod 822 away from the clamping portion 8221 and is used for driving the swing rod 822 to swing in the vertical plane.

[0075] It can be understood that the movable connection of the swing rod 822 can be a hinge connection or a bearing connection, etc., but not limited thereto. The clamping portion 8221 can be a fixture. Since the outer wall of the valve stem 2 is provided with threads or annular grooves, the clamping portion 8221 can be set as an arc groove structure to be stuck on the outer wall of the threads or annular grooves of the valve stem 2, but not limited thereto. The push rod driver 823 can adopt a cylinder or an electric push rod, etc. The movable connection of the output end of the push rod driver can adopt a hinge connection, etc.

[0076] Set in this way, when the pusher driver extends, it drives the swing rod 822 to swing, causing the clamping part 8221 at the bottom of the swing rod 822 to swing close to the center of the turntable 11. When the valve stem 2 rotates to the front of the clamping end, the pusher driver retracts to drive the swing rod 822 to swing, just making the clamping end clamp on the valve stem 2. Since the clamping end moves in an arc when the swing rod 822 swings, the valve stem 2 can be taken out exactly. Finally, through the horizontal drive of the drive assembly 81, the valve stem 2 is moved outside the turntable 11.

[0077] As described above, it is only the preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An automatic assembling device for valve stem sealing rings, characterized in that, Including: A positioning mechanism, having a rotatable turntable, on the top surface of which there are a number of positioning holes arranged at intervals around the center of the turntable, and the positioning holes are used for vertically positioning the valve stem; A material storage mechanism, having a material storage rod vertically arranged directly above one of the positioning holes, and the material storage rod is used for sleeving and storing a number of sealing rings; A clamping mechanism, arranged above the turntable, and the clamping mechanism has a first fixed clamp and a second fixed clamp which are arranged at intervals up and down and are used for clamping the material storage rod; and A material feeding mechanism, having a material feeding clamp which can be lifted and lowered on one side of the material storage rod, and the output end of the material feeding clamp is stuck on the material storage rod or the sealing ring between the first clamp and the second clamp, and then moves down to push the sealing ring on the material storage rod down and sleeved on the valve stem.

2. The automatic valve stem seal ring assembling device according to claim 1, characterized in that, The positioning holes penetrate through the turntable up and down, and there are steps inside for carrying and limiting the bottom of the valve stem, and there are avoidance holes on the steps; the automatic assembly device further includes: a material ejecting mechanism arranged below the positioning hole for jacking up the valve stem in the positioning hole until it abuts against the bottom of the material storage rod; And / or, the material ejecting mechanism includes a ejecting rod arranged directly below the positioning hole, and a material ejecting driver whose output end is connected to the ejecting rod for driving the ejecting rod to lift and lower.

3. The automatic valve stem seal ring assembling device according to claim 2, characterized in that, There are a number of mounting holes arranged at intervals around the center of the turntable on the turntable; the positioning mechanism further includes: positioning fixtures detachably arranged in the corresponding mounting holes one by one, and the positioning holes are arranged on the positioning fixtures; And / or, the positioning fixture includes: A fixed sleeve arranged in the mounting hole; A guide post, vertically guiding and cooperating with the fixed sleeve, and a limit head is arranged at the top of the guide post which can abut against the top of the fixed sleeve; A spring, sleeved on the guide post, and one end abuts against the bottom of the turntable or the fixed sleeve, and the other end is connected to the guide post for rebounding the guide post; Wherein, the positioning hole is arranged at the top of the guide post, and the ejecting rod acts on the bottom of the guide post.

4. The automatic valve stem seal ring assembling device according to claim 1, characterized in that, The positioning mechanism further includes: A support base arranged below the turntable; A rotation driving assembly arranged on the support base, and the power output end is connected to the center of the turntable for driving the turntable to rotate.

5. The automatic valve stem seal ring assembling device according to claim 1, characterized in that The material storage mechanism further includes: a frame arranged on one side of the positioning mechanism for fixing the top of the material storage rod; And / or, the frame includes: A support member arranged on one side of the positioning mechanism; and A fixing frame arranged on the support member and located above the turntable; Wherein, the top of the material storage rod is detachably fixed on the fixing frame; And / or, the material storage mechanism further includes: A clamping seat arranged on the fixing frame for clamping the material storage rod; and A tightening driver arranged on the fixing frame, and the output end faces the base for tightly clamping the material storage rod in the clamping seat.

6. The automatic valve stem seal ring assembling device according to claim 1, wherein, One end of the material storage rod close to the positioning hole has a conical structure with a gradually increasing radius from top to bottom; And / or, a concave hole for embedding and cooperating with the valve stem is arranged at the bottom of the material storage rod; And / or, a counterweight is movably sleeved on the storage rod for pressing down the sealing ring. And / or, the storage mechanism further includes: A sensor, disposed on the fixed frame and located on one side close to the bottom of the storage rod for sensing the counterweight; An alarm, electrically connected to the sensor; when the sensor senses the counterweight, the alarm is used for alarming.

7. The automatic valve stem seal ring assembling device according to claim 5, characterized in that The clamping mechanism further includes: a first moving member and a second moving member which are mounted on the fixed frame or the support member and are arranged at intervals in the up and down direction; the output ends of the first moving member and the second moving member are respectively connected to a first fixed clamp and a second fixed clamp for driving the first fixed clamp and the second fixed clamp to perform telescopic movement toward the storage rod.

8. An automatic valve stem seal ring assembling device according to claim 1, characterized in that, The material feeding mechanism further includes: A support frame, disposed on one side of the positioning mechanism; A lifting driving member, disposed on the support frame; Wherein, the material feeding clamp is disposed at the output end of the lifting driving member, and the lifting driving member drives the material feeding clamp to move up and down; And / or, the clamping end of the material feeding clamp is provided with two oppositely arranged clamping pieces, and clamping grooves for being clamped with the storage rod or the sealing ring are arranged on the opposite sides of the two clamping pieces; And / or, an elastic member for elastically clamping the two clamping pieces is connected between the clamping end of the material feeding clamp or between the two clamping pieces; And / or, the material feeding clamp is arranged opposite to the clamping mechanism.

9. The automatic valve stem seal ring assembling device according to claim 1, characterized in that, The automatic assembling device further includes a material discharging mechanism disposed on the support member or the fixed frame and above the turntable, and the material discharging mechanism is used for taking out and discharging the valve rod from the positioning hole; And / or, the material discharging mechanism includes: A driving assembly, disposed on the support member or the fixed frame and having the function of driving in the horizontal and / or vertical directions; A material discharging clamp, disposed at the power output end of the driving assembly for clamping the valve rod in the positioning hole.

10. The automatic valve stem seal ring assembling device according to claim 1, characterized in that, The driving assembly is a horizontal driving member; The material discharging clamp includes: A fixing plate, disposed at the output end of the horizontal driving member, and a convex block is disposed on the surface of the fixing plate facing away from the horizontal driving member; A swing rod, vertically movably disposed on the convex block, and the bottom of the swing rod is bent away from the fixing plate and is provided with a clamping portion for clamping the valve rod; A push rod driver, disposed on the fixing plate, and the output end of the push rod driver is movably connected to one end of the swing rod away from the clamping portion for driving the swing rod to swing in the vertical plane.

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