Valve assembling equipment

Abstract

The invention relates to valve assembling, in particular to valve assembling equipment. In order to assist valve assembly filling, the manual hand force is reduced, and the assembly efficiency is improved. The equipment comprises a feeding pipe, a pushing mechanism capable of moving filler in the feeding pipe in the axis direction of the feeding pipe, and a transmission mechanism for driving the pushing mechanism. Through guiding of the feeding pipe and feeding of the material pushing part, centralizing of the valve rod and blocking and feeding of the filler are achieved, and the filler is loaded between the valve body and the valve rod. And orderly matching of filling is realized by matching with the material blocking piece which works synchronously. Motor driving is adopted and matched with gear and rack transmission, the feeding speed is high, material pushing pieces can stop materials in time, and the assembling efficiency is improved.

Description

Technical Field

[0001] The present invention relates to valve assembly, and more particularly to a valve assembly device. Background Art

[0002] In valve assembly, packing is an essential component. The gap between the valve stem and the valve body creates a gap. The packing is installed between the stem and the gland, secured with the iron ring and the gland sleeve. Through extrusion and deformation, it forms a dynamic seal that maintains a tight seal even when the valve stem moves. Furthermore, the packing's installation must work in conjunction with the iron ring, gland, and other components to form a multi-layered seal. If the packing is omitted, the entire assembly system will fail to achieve a reliable seal, resulting in functional failure.

[0003] However, since the sealing ring is small, it usually requires pinching and pushing with the fingers during operation, which can easily cause muscle fatigue. In addition, the assembly of a single valve takes a long time, and fatigue in the fingertip joints continues to accumulate, which not only affects assembly efficiency but also damages joint health. This process step needs to be improved. Summary of the Invention

[0004] The invention provides a valve assembling device, the purpose of which is to assist valve assembling packing.

[0005] The above objectives are achieved through the following technical solutions:

[0006] Valve assembly equipment Valve assembly equipment includes a feeding pipe, a pushing mechanism that can move the filler inside the feeding pipe along the axis of the feeding pipe, and a transmission mechanism that drives the pushing mechanism.

[0007] A notch is provided on the feeding pipe, and / or a lubricating layer is formed on the inner wall of the feeding pipe.

[0008] The upper portion of the feeding tube is provided with a first feeding port, or the upper portion of the feeding tube is provided with a first feeding port and a second feeding port.

[0009] The feeding pipe is fixedly connected to and communicated with a filler placing container, and the filler placing container is used for longitudinally placing fillers.

[0010] The pushing mechanism includes a pushing piece.

[0011] The pusher is a hollow structure, the valve stem of the valve can be loosely fitted in the pusher, and a chamfered surface is provided at the inner edge of the left end of the pusher.

[0012] The filler placement container includes a first material storage bin, or a first material storage bin and a second material storage bin. The first material storage bin is used for longitudinally placing a sealing ring, and the second material storage bin is used for longitudinally placing a metal ring.

[0013] The material pushing mechanism further comprises a material blocking member, which can pass through the material stacking container.

[0014] The transmission mechanism includes a base frame, which is rotatably connected to a gear. The upper and lower parts of the gear are meshed and transmitted with a rack that is slidably connected to the base frame. The pusher and the rack transmission connection seat located below perform the same movement in synchronization, and the blocking member and the rack transmission connection located above perform the same movement in synchronization.

[0015] One of the racks is driven by a power source to achieve linear motion, such as a screw slider linear drive, one of the racks is fixedly connected to the slider, for example, one of the racks is fixedly connected to the telescopic end of a parallel electric telescopic cylinder, or the gear is driven by a power source to achieve rotational motion, such as being fixedly connected to the output shaft of a motor, and the output shaft of the motor coincides with the axis of the gear.

[0016] The beneficial effects of the valve assembly equipment of the present invention are:

[0017] Guided by the feed pipe and fed by the pusher, the valve stem is straightened and the packing is blocked and fed, allowing the packing to be installed between the valve body and the valve stem. Synchronously operating with the stopper ensures orderly packing engagement. Driven by a motor and coupled with a rack and pinion transmission, the system delivers high feed speeds, enabling timely material blocking by the pusher and improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A perspective view of a valve assembly device according to the present invention is shown;

[0019] Figure 2 A schematic diagram of the feed tube is shown;

[0020] Figure 3 A schematic diagram showing the present invention after the feed tube is removed;

[0021] Figure 4 Shows Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5 Shows Figure 3 Enlarged view of point B in the middle;

[0023] Figure 6 A schematic diagram showing the first pile of silos after cutting, with filler added inside and blocked by a material blocking piece;

[0024] Figure 7 A schematic diagram showing another set of fillers suspended from a material stop.

[0025] In the figure: 1. feeding pipe; 2. first feeding port; 3. first stacking bin; 4. second feeding port; 5. second stacking bin; 6. pushing member; 7. chamfered surface; 8. blocking member; 8a. first connecting member; 9. base frame; 9a. guide groove; 10. motor; 11. gear; 12. rack; 12a. slider; 13. filler; 14. second connecting member. DETAILED DESCRIPTION

[0026] A valve assembly equipment, reference Figure 1 and 2 , including a feed tube 1 with a cylindrical inner wall, the feed tube 1 is used to guide the internal filler 13 to move along its own axial direction. A notch is formed on the left part of the feed tube 1 to reduce the contact area with the filler 13, thereby reducing the friction. Alternatively, release paper is attached to the inner wall of the feed tube 1, and if it is made of metal, it can be polished to reduce the friction coefficient, so as to form a lubricating layer, thereby reducing the friction with the filler 13. The filler 13 is generally an annular structure, usually a metal ring or a polytetrafluoroethylene sealing ring. The main purpose of the packing 13 is to seal the gap between the valve stem and the valve body to prevent media such as gas, liquid, etc. from leaking from the gap. At the same time, it can also play a certain lubricating role to ensure that the valve stem maintains good sealing and flexibility during movement such as rotation and lifting.

[0027] A first feed port 2 is provided on the upper right side of the feed pipe 1, a first material storage bin 3 is fixedly connected to the feed pipe 1, and the first material storage bin 3 is connected to the first feed port 2. Figure 6 and 7 The first stacking bin 3 can simultaneously accommodate multiple sealing rings. Preferably, four sealing rings form a group, and each group of sealing rings can be simultaneously placed into the feed tube 1. The axes of the sealing rings in any group are horizontal and coincident, and the axes of the sealing rings are parallel to the axial direction of the feed tube 1. By repeatedly placing groups of sealing rings into the first stacking bin 3, multiple groups of sealing rings can be stacked longitudinally within the first stacking bin 3, and the first feed port 2 allows any group of sealing rings to pass through and enter the feed tube 1.

[0028] Similarly, a second feed port 4 is provided on the upper right side of the feeding pipe 1, and the second feed port 4 is located on the right side of the first feed port 2. A second material bin 5 is fixedly connected to the feeding pipe 1, and the second material bin 5 can just hold one metal ring at a time. The first feed port 2 allows the metal ring to enter the feeding pipe 1.

[0029] At this point, multiple sealing rings and a metal ring at the end can be pressed into the feed tube 1 at a time. This packing set 13 is then used to assemble the valve. During assembly, the valve stem is first inserted into the feed tube 1, and then the sealing rings and metal rings are pushed onto the stem until they are securely installed in the valve. This solution allows for the installation of sealing rings and / or metal rings as needed to meet diverse requirements.

[0030] Further explanation, combined with Figures 3 to 7 , adopt the pushing piece 6 that can stretch into the feeding tube 1 to push the filler 13. The diameter of the pushing piece 6 should be larger than the inner diameter of the filler 13 and smaller than the inner diameter of the feeding tube 1.

[0031] Optimally, a horizontal through hole is provided on the first and second pile bins 3 and 5 for the blocking member 8 to pass through, which can prevent the filler 13 from descending into the feeding pipe 1. When the blocking member 8 is pulled out, the filler 13 can smoothly descend into the feeding pipe 1.

[0032] The pusher 6 is preferably a hollow structure, and a chamfered surface 7 can be set at the inner edge of the left end of the pusher 6. The inclined valve stem can be guided to contact the chamfered surface 7 and then straightened, so that the valve stem can enter the interior of the pusher 6, so that the axis of the valve stem and the axis of the pusher 6 coincide, and the axis of the valve stem is located on the rotation axis of the valve stem. At this time, the axis of the valve stem and the axis of the pusher 6 are both horizontal.

[0033] If electric drive is used:

[0034] It also includes a base frame 9, the front end of which is fixedly connected to a stepper motor 10, the output shaft of the motor 10 is arranged rearward and passes through the base frame 9, a gear 11 is fixedly connected to the output shaft of the motor 10, a rack 12 is arranged above and below the gear 11, the tooth surfaces of the two racks 12 are arranged face to face for meshing with the gear 11, a guide groove 9a is provided on the upper and lower sides of the rear end face of the base frame 9, the front end of each rack 12 is fixedly connected to a slider 12a, and the two sliders 12a are respectively slidably connected in the two guide grooves 9a, so that the rack 12 has only a left and right degree of freedom relative to the base frame 9. The right end of the stopper 8 and the right end of the pusher 6 are each fixedly connected to a first connecting member 8a, the first connecting member 8a on the stopper 8 is fixedly connected to the rack 12 located above, and the first connecting member 8a on the pusher 6 is fixedly connected to the rack 12 located below. Therefore, when the output shaft of stepper motor 10 rotates counterclockwise, stepper motor 10 drives gear 11 to rotate counterclockwise, which drives rack 12 located below to move rightward, thereby driving pusher 6 to move rightward. Gear 11 drives rack 12 located above to move leftward, thereby driving stopper 8 to move leftward. Conversely, when the output shaft of stepper motor 10 rotates clockwise, pusher 6 moves leftward and stopper 8 moves rightward.

[0035] During assembly, the initial position of the blocking member 8 is placed in the first material silo 3 and the second material silo 5. After the fillers 13 are placed in the first material silo 3 and the second material silo 5, all the fillers are located above the blocking member 8. At this time, there is no filler 13 in the feed tube 1, and the pusher 6 is located on the right side of the feed tube 1. The valve stem of the valve body is fed into the feed tube 1, and the valve stem is located on the left side of the first material silo 3, and the left part of the feed tube 1 is attached to the valve body. The pusher 6 feeds to the left, and the blocking member 8 feeds to the right at the same time. When the pusher 6 enters the feed tube 1, until the valve stem is inserted into the inside of the feed tube 1 for straightening. At this time, the blocking member 8 has moved to the right and has separated from the second material silo 5, and the filler 13 has fallen to the top of the pusher 6. Subsequently, the pusher 6 moves to the right again, causing the filler 13 in contact with the top of the pusher 6 to fall into the feed pipe 1. Another set of fillers 13 also falls above the filler 13 in the feed pipe 1. The mentioned another set of fillers 13 also happens to be hung on the stopper 8. Then the pusher 6 moves to the left again, pushing the filler 13 onto the valve stem until it is fed into the valve body. At this time, the mentioned another set of fillers is at the top of the pusher 6 waiting to be fed into another valve body next time.

[0036] Regarding the valve stem entering the feed pipe 1, is the valve actively fed and the feed pipe 1 stationary? Or is the feed pipe 1 actively fed and the valve stationary? It depends on the specific assembly plan of the assembly line. If the valve is fed, then the valve is on a dynamic assembly line, transported by a conveyor, or moved with a push mechanism. If the feed pipe 1 is fed, then you can refer to Figure 7 , a second connecting member 14 is fixed to the feeding pipe 1, and the second connecting member 14 is fixed to the base frame 9. The feeding pipe 1, the base frame 9 and / or the second connecting member 14 are driven to move by a linear drive. The linear drive can be a pneumatic cylinder or an electric telescopic cylinder, and its telescopic end can be directly fixed to the feeding pipe 1, the base frame 9 and / or the second connecting member 14. The specific fixed position of the telescopic end depends on the position of the obstruction that hinders the feeding in the on-site environment. The telescopic end should be staggered with the obstruction. If the feeding pipe 1 is static, the top or bottom position of the feeding pipe 1 and / or the base frame 9 can be fixed on other bases or support frame structures. It should be noted that the height of the feeding pipe 1 satisfies: when the valve stem axis is horizontal and returned to the valve body, the axis of the feeding pipe 1 coincides with the axis of the valve stem at this time.

Claims

1. Valve assembly equipment The valve assembly equipment includes a feed pipe, a pusher mechanism capable of moving the filler inside the feed pipe along the axis of the feed pipe, and a transmission mechanism for driving the pusher mechanism.

2. The valve assembly equipment according to claim 1, wherein a notch is provided on the feed pipe, and / or a lubricating layer is formed on the inner wall of the feed pipe.

3. The valve assembly equipment according to claim 1, wherein a first feed port is provided on the upper portion of the feed pipe, or a first feed port and a second feed port are provided on the upper portion of the feed pipe.

4. The valve assembly equipment according to claim 1, wherein the feed pipe is fixedly connected to and communicated with a filler placement container, and the filler placement container is used to vertically place the filler. The valve assembling equipment according to claim 4 , wherein the pushing mechanism comprises a pushing member.

6. The valve assembly equipment according to claim 5, wherein the pusher is a hollow structure, the valve stem of the valve can be loosely fitted in the pusher, and a chamfered surface is provided at the inner edge of the left end of the pusher.

7. The valve assembly equipment according to claim 5, wherein the filler placement container includes a first material storage bin, or a first material storage bin and a second material storage bin, wherein the first material storage bin is used for longitudinally placing the sealing ring, and the second material storage bin is used for longitudinally placing the metal ring. 8 . The valve assembly equipment according to claim 5 , wherein the material pushing mechanism further comprises a material blocking member, and the material blocking member can pass through the material stacking container.

9. The valve assembly equipment according to claim 8, the transmission mechanism includes a base frame, a gear is rotatably connected to the base frame, and the upper and lower parts of the gear are meshed and transmitted with a rack slidably connected to the base frame, the pushing member and the rack transmission connection seat located below perform the same movement in synchronization, and the blocking member and the rack transmission connection located above perform the same movement in synchronization.

10. The valve assembly apparatus according to claim 9, wherein a rack is driven by a power source to realize linear motion, or a gear is driven by a power source to realize rotational motion.

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