An external thread machining device for valve joints

Abstract

The utility model discloses a kind of outer thread processing device for valve joint, belong to valve processing field, including machine box, the front of machine box is provided with rotating hole, rotating hole is rotatably connected with mounting ring, the inside of mounting ring is inlaid with die stock, more than three thread grooves are set in the inner surface of die stock, the top front of machine box is equipped with bearing, and the inside of machine box is provided with push mechanism, and the both sides of push mechanism are provided with sliding assembly;The outer thread processing device for valve joint, whole structure is simple and easy to operate, easy to carry, it is convenient to disassemble and maintain, by setting sliding assembly, so that mounting ring can rotate in the inside of fixed ring, when valve joint passes from mounting ring, it can be corrected limit by card barrel, and located in the circumferential of fixed ring is provided with arc hole, can export the swarf of outer thread processing, avoid its stay in fixed ring, hinder valve joint outer thread normal processing.

Description

Technical Field

[0001] This utility model belongs to the field of valve processing technology, specifically relating to a device for processing external threads of valve joints. Background Technology

[0002] External thread machining of valve fittings is crucial in valve manufacturing and installation. As a key component of fluid control systems, the sealing performance and connection reliability of valve fittings affect system safety and efficiency. External thread machining involves cutting threads on the outer surface of valve fittings to achieve a tight connection with other accessories. With industrial development, the demand for fluid transportation systems is increasing, and valves are used in many industries such as petroleum and chemical industries. This places higher demands on external thread machining, requiring the guarantee of thread accuracy and surface quality, while taking into account material strength and corrosion resistance.

[0003] A search revealed Chinese Patent Publication No. CN117600579A, which discloses a handheld external thread processing device, including a handheld threading machine. The handheld threading machine is connected to an oil injection structure, which includes a cylindrical body. The end of the cylindrical body is connected to a mounting box via an internal threaded locking ring. The mounting box has a placement cavity and a receiving cavity separated by a partition plate. An oil injection assembly extending into the cylindrical body is connected to the mounting box via a connecting plate. The oil injection assembly includes an oil outlet pipe group and annular pipes. The oil outlet pipe group includes one pipe body A, three pipe bodies B, and three pipe bodies C. There are two annular pipes, and the inner rings of the two annular pipes are connected to oil filling pipes. The above invention has the following shortcomings:

[0004] Although the above-mentioned device is equipped with a cylinder, support structure, connection structure and positioning structure, it enables the processing of external threads by hand, saves the physical strength of workers and ensures the stability of threading. However, the overall structure has a relatively large number of parts, which not only increases the difficulty of design and assembly, but also makes the device steps cumbersome and inconvenient to install, disassemble and maintain. Therefore, we propose an external thread processing device for valve joints. Utility Model Content

[0005] The purpose of this invention is to provide a device for processing external threads of valve joints, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for external thread processing of valve joints, comprising a housing, a rotating hole on the front of the housing, a mounting ring rotatably connected in the rotating hole, a die embedded in the inner side of the mounting ring, three or more threaded grooves on the inner surface of the die, and the die being used to tap the external surface of the valve joint, a bearing being mounted on the top front of the housing, and a pushing mechanism being provided inside the housing, with sliding components on both sides of the pushing mechanism.

[0007] In a preferred embodiment, the sliding assembly includes a guide strip, a first mounting plate, a second mounting plate, and a fixing ring. The guide strip is fixedly connected to the inner walls of both sides of the housing. The first mounting plate is slidably connected to the surface of the guide strip. The second mounting plate is fixedly connected to the inner walls of both sides of the housing near the end of the guide strip. The fixing ring is fixedly connected to one side of the second mounting plate.

[0008] In a preferred embodiment, the sliding assembly further includes an annular groove, a retaining ring, an arc-shaped hole, a retaining sleeve, a fitting groove, a guide rod, an insertion hole, a retaining rod, and a retaining groove. The annular groove is formed on the outer circumference of the mounting ring, the retaining ring is fixedly connected to the inner circumference of the fixing ring, the arc-shaped hole is formed on the outer circumference of the bottom of the fixing ring, the retaining ring and the annular groove are slidably engaged, the retaining sleeve is fixedly connected to one side of the center of the fixing ring, and the fitting groove is formed on the inner surface of the mounting ring and is engaged with the die.

[0009] In a preferred embodiment, the clamping rod is fixedly connected to the inner circumference of the fitting groove, the guide rod is fixedly connected to one side of the clamping rod, the slot is opened on the back circumference of the die, and the insertion hole is opened on the inner side of the slot.

[0010] In a preferred embodiment, the pushing mechanism includes an annular tooth, a driving tooth, a worm, a worm wheel, a guide tooth, a rotating rod, a rack plate, and a retaining cover. The annular tooth is fixedly connected to the circumferential surface of the mounting ring. A servo motor is fixedly connected to the top outer wall of the housing via a support plate. The worm is threadedly connected to the output end of the servo motor, and the driving tooth is threadedly connected to one end of the worm.

[0011] In a preferred embodiment, the drive gear meshes with the ring gear, the two ends of the rotating rod are rotatably connected to the inner walls of both sides of the housing, and the worm gear is threadedly connected to the circumference of the middle section of the rotating rod.

[0012] In a preferred embodiment, the two guide teeth are fixedly connected to the outer circumferential wall of the rotating rod near the two sides of the worm gear, the two sides of the cover are fixedly connected to the opposite side of the mounting plate, and the rack plate is fixedly connected to the top two sides of the cover.

[0013] In a preferred embodiment, the rack plate meshes with the guide teeth, the worm gear meshes with the worm, and the cover and the sleeve have the same diameter.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This device for machining the external threads of valve fittings has a simple overall structure, is easy to operate, is easy to carry, and is convenient to disassemble and maintain. By setting a sliding component, the mounting ring can rotate inside the fixed ring. When the valve fitting passes through the mounting ring, it can be corrected and limited by a clamp. An arc-shaped hole is set on the inner circumference of the fixed ring to discharge the waste chips from the external threading process, preventing them from staying in the fixed ring and hindering the normal machining of the valve fitting's external threads.

[0016] This device for machining the external threads of valve fittings uses a push mechanism. A servo motor drives a worm gear to rotate, and the drive teeth and ring teeth work together to rotate the die. Simultaneously, the worm gear rotates, causing the worm wheel to rotate. Furthermore, through the linkage between the guide teeth and the rack plate, the cover under the rack plate moves towards the die. This ensures that the valve fitting is machined while being horizontally pushed, achieving rapid machining of the external threads of the valve fitting. Attached Figure Description

[0017] Figure 1 This is a front view of the structure of this utility model;

[0018] Figure 2 This is an internal schematic diagram of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the driving mechanism in the structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the die and the fixing ring in the structure of this utility model;

[0021] Figure 5 This is a side view of the tooth in the structure of this utility model.

[0022] In the diagram: 1. Housing; 2. Mounting ring; 3. Bearing; 4. Die; 5. Servo motor; 6. Push mechanism; 7. Guide bar; 8. Mounting plate one; 9. Mounting plate two; 10. Fixing ring; 11. Annular groove; 12. Snap ring; 13. Arc hole; 14. Snap cylinder; 15. Fitting groove; 16. Guide rod; 17. Insertion hole; 18. Snap rod; 19. Snap groove; 601. Annular tooth; 602. Drive tooth; 603. Worm; 604. Worm wheel; 605. Guide tooth; 606. Rotating rod; 607. Rack plate; 608. Snap cover. Detailed Implementation

[0023] The present invention will be further described below with reference to the embodiments.

[0024] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0025] Please see Figure 1-5 This utility model provides an external thread processing device for valve joints, including a housing 1. The front of the housing 1 has a rotating hole, and a mounting ring 2 is rotatably connected in the rotating hole. A die 4 is adsorbed on the inner side of the mounting ring 2. The inner surface of the die 4 has three or more threaded grooves. A bearing 3 is installed on the top front of the housing 1. A pushing mechanism 6 is provided inside the housing 1, and sliding components are provided on both sides of the pushing mechanism 6.

[0026] To achieve external thread machining and valve joint movement, such as Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the sliding assembly includes a guide bar 7, a first mounting plate 8, a second mounting plate 9, a fixing ring 10, an annular groove 11, a retaining ring 12, an arc-shaped hole 13, a retaining sleeve 14, a fitting groove 15, a guide rod 16, an insertion hole 17, a retaining rod 18, and a retaining groove 19. The guide bar 7 is fixedly connected to the inner walls of both sides of the housing 1. The first mounting plate 8 is slidably connected to the surface of the guide bar 7. The second mounting plate 9 is fixedly connected to the inner walls of both sides of the housing 1 near the end of the guide bar 7. The fixing ring 10 is fixedly connected to one side of the second mounting plate 9.

[0027] An annular groove 11 is formed on the outer circumference of the mounting ring 2, and the retaining ring 12 is fixedly connected to the inner circumference of the fixing ring 10. An arc-shaped hole 13 is formed on the outer circumference of the bottom of the fixing ring 10, and the retaining ring 12 and the annular groove 11 slide and engage with each other. The retaining sleeve 14 is fixedly connected to the center side of the fixing ring 10. The fitting groove 15 is formed on the inner surface of the mounting ring 2, and the fitting groove 15 and the die 4 are attracted and fixed to each other.

[0028] The locking rod 18 is fixedly connected to the inner circumference of the fitting groove 15, and the guide rod 16 is fixedly connected to one side of the locking rod 18. The slot 19 is opened on the back circumference of the die 4, and the insertion hole 17 is opened on the inner side of the slot 19.

[0029] In this embodiment, the retaining ring 12 is inserted into the annular retaining groove 11, so that the mounting ring 2 and its inner side teeth 4 can rotate on one side of the fixing ring 10. When the valve connector passes through the mounting ring 2, it can be corrected and limited by the retaining sleeve 14. An arc-shaped hole 13 is provided on the inner circumference of the fixing ring 10 to discharge the waste chips from the external threading process, preventing them from staying in the fixing ring 10 and hindering the normal processing of the valve connector's external thread.

[0030] The die 4 is fitted into the fitting groove 15 inside the mounting ring 2, and the locking rod 18 located in the fitting groove 15 is fitted into the locking groove 19 on the back of the die 4. The guide rod 16 at the end of the locking rod 18 is inserted into the insertion hole 17. The guide rod 16 passes through the front of the die 4, and the part that passes through is threaded. By screwing the fastening nut into the end of the guide rod 16, the die 4 and the mounting ring 2 can be effectively fixed, ensuring the connection between the two. At this time, the die 4 is in front of the valve joint to be processed.

[0031] To quickly perform external thread machining on valve fittings, such as Figure 2 , Figure 3 and Figure 4 As shown, the pushing mechanism 6 includes an annular gear 601, a driving gear 602, a worm 603, a worm wheel 604, a guide gear 605, a rotating rod 606, a rack plate 607, and a cover 608. The annular gear 601 is fixedly connected to the circumferential surface of the mounting ring 2. The top outer wall of the housing 1 is fixedly connected to a servo motor 5 via a support plate. The worm 603 is threadedly connected to the output end of the servo motor 5, and the driving gear 602 is threadedly connected to one end of the worm 603.

[0032] The drive gear 602 meshes with the ring gear 601. The two ends of the rotating rod 606 are rotatably connected to the inner walls of the two sides of the housing 1. The worm gear 604 is threadedly connected to the middle circumference of the rotating rod 606. The two guide teeth 605 are fixedly connected to the outer circumference of the rotating rod 606 near the two sides of the worm gear 604. The two sides of the cover 608 are fixedly connected to the opposite side of the mounting plate 8. The rack plate 607 is fixedly connected to the top two sides of the cover 608. The rack plate 607 meshes with the guide teeth 605. The worm gear 604 meshes with the worm 603. The cover 608 and the cylinder 14 have the same diameter.

[0033] In this embodiment, when the servo motor 5 starts and drives the worm gear 603 to rotate, the rotating worm gear 603 drives the drive gear 602 to rotate, the rotating drive gear 602 drives the ring gear 601 to rotate, and the rotating ring gear 601 drives the die 4 inside the mounting ring 2 to rotate. During the rotation of the worm gear 603, the worm wheel 604 is driven to rotate, and the rotating worm wheel 604 drives the guide teeth 605 on both sides to rotate synchronously. The rotating guide teeth 605 drive the rack plate 607 to move horizontally, and the moving rack plate 607 drives the cover 608 to move closer to the die 4. This ensures that while the external thread of the valve connector is being processed, the valve connector is also being pushed horizontally, realizing the rapid processing of the external thread of the valve connector. Moreover, the overall device has a simple structure, is easy to operate, and is easy to carry.

[0034] The working principle and usage process of this utility model are as follows: First, the valve connector is passed through the mounting ring 2, so that the middle section of the connector is locked in the clamping sleeve 14 and the end is blocked by the clamping cover 608. Then, the die 4 is placed into the fitting groove 15 inside the mounting ring 2, so that the clamping rod 18 located in the fitting groove 15 and the clamping groove 19 on the back of the die 4 are fitted together, so that the guide rod 16 at the end of the clamping rod 18 is inserted into the insertion hole 17 and the guide rod 16 passes through the front of the die 4. Since the circumference of the part through which the guide rod 16 passes is provided with threads, the die 4 and the mounting ring 2 can be effectively fixed by screwing the fastening nut into the end of the guide rod 16. At this time, the end of the valve connector to be processed is located behind the die 4, and the outer diameter of the end of the valve connector is slightly larger than the inner diameter of the die 4.

[0035] Next, the servo motor 5 is started to drive the worm gear 603 to rotate. The rotating worm gear 603 drives the drive gear 602 to rotate, the rotating drive gear 602 drives the ring gear 601 to rotate, and the rotating ring gear 601 drives the mounting ring 2 to rotate. During the rotation of the worm gear 603, the worm wheel 604 is driven to rotate. The rotating worm wheel 604 drives the guide teeth 605 on both sides to rotate synchronously. The rotating guide teeth 605 drive the rack plate 607 to move horizontally, and the moving rack plate 607 drives the cover 608 to move closer to the mounting ring 2.

[0036] Finally, the cover 608 pushes the rear end of the valve joint, causing the valve joint to move horizontally. At the same time, the mounting ring 2 drives the fixed die 4 inside it to rotate, so that the die 4 squeezes and rotates the front end of the moving valve joint. At this time, the thread groove on the inner side of the die 4 will form a spiral pattern on the front end of the valve joint, thereby realizing the external threading of the valve joint. During the external threading process, the die 4 on the inner side of the mounting ring 2 can rotate inside the fixed ring 10, and an arc-shaped hole 13 is provided on the inner circumference of the fixed ring 10 to discharge the waste chips from the external threading.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for machining external threads on valve fittings, comprising a housing (1), characterized in that: The front of the housing (1) is provided with a rotating hole, and a mounting ring (2) is rotatably connected in the rotating hole. A die (4) is embedded in the inner side of the mounting ring (2). The inner surface of the die (4) is provided with three or more threaded grooves, and the die (4) is used to tap the outside of the valve joint. A bearing (3) is installed on the top front of the housing (1), and a pushing mechanism (6) is provided inside the housing (1). Sliding components are provided on both sides of the pushing mechanism (6).

2. The device for processing external threads of valve joints according to claim 1, characterized in that: The sliding assembly includes a guide bar (7), a first mounting plate (8), a second mounting plate (9), and a fixing ring (10). The guide bar (7) is fixedly connected to the inner walls of both sides of the housing (1). The first mounting plate (8) is slidably connected to the surface of the guide bar (7). The second mounting plate (9) is fixedly connected to the inner walls of both sides of the housing (1) near the end of the guide bar (7). The fixing ring (10) is fixedly connected to one side of the second mounting plate (9).

3. The device for processing external threads of valve joints according to claim 2, characterized in that: The sliding assembly further includes an annular groove (11), a retaining ring (12), an arc-shaped hole (13), a retaining sleeve (14), a fitting groove (15), a guide rod (16), an insertion hole (17), a retaining rod (18), and a groove (19). The annular groove (11) is opened on the outer circumference of the mounting ring (2). The retaining ring (12) is fixedly connected to the inner circumference of the fixing ring (10). The arc-shaped hole (13) is opened on the outer circumference of the bottom of the fixing ring (10). The retaining ring (12) and the annular groove (11) slide and engage with each other. The retaining sleeve (14) is fixedly connected to one side of the center of the fixing ring (10). The fitting groove (15) is opened on the inner surface of the mounting ring (2), and the fitting groove (15) is fitted with the die (4).

4. The device for processing external threads of valve joints according to claim 3, characterized in that: The locking rod (18) is fixedly connected to the inner circumference of the fitting groove (15), the guide rod (16) is fixedly connected to one side of the locking rod (18), the slot (19) is opened on the back circumference of the die (4), and the insertion hole (17) is opened on the inner side of the slot (19).

5. The device for processing external threads of valve joints according to claim 1, characterized in that: The pushing mechanism (6) includes an annular tooth (601), a driving tooth (602), a worm (603), a worm wheel (604), a guide tooth (605), a rotating rod (606), a rack plate (607), and a cover (608). The annular tooth (601) is fixedly connected to the circumferential surface of the mounting ring (2). The top outer wall of the housing (1) is fixedly connected to a servo motor (5) via a support plate. The worm (603) is threadedly connected to the output end of the servo motor (5). The driving tooth (602) is threadedly connected to one end of the worm (603).

6. The device for processing external threads of valve joints according to claim 5, characterized in that: The drive gear (602) meshes with the ring gear (601), and the two ends of the rotating rod (606) are rotatably connected to the inner walls of the two sides of the housing (1). The worm gear (604) is threadedly connected to the middle section of the rotating rod (606).

7. The device for processing external threads of valve joints according to claim 6, characterized in that: The two guide teeth (605) are fixedly connected to the outer circumferential wall of the rotating rod (606) near the worm gear (604). The two sides of the cover (608) are fixedly connected to the opposite side of the mounting plate (8). The rack plate (607) is fixedly connected to the top two sides of the cover (608).

8. The device for processing external threads of valve joints according to claim 7, characterized in that: The rack plate (607) meshes with the guide tooth (605), the worm wheel (604) meshes with the worm (603), and the cover (608) and the sleeve (14) have the same diameter.

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