A ball valve production process

Abstract

The present invention provides a ball valve production process, comprising the following steps: blanking, forging, rough and fine machining, turning, assembling, performance testing, winding, and packaging. The integrated testing tape winding equipment comprises a loading component, a blanking component, a transport turntable, a sealing and pressure resistance testing component, and a winding component. The loading component is used to place the valve body into the transport turntable, and the transport turntable drives the valve body to move to the sealing and pressure resistance testing component and the winding component. The blanking component is used to take the valve body out of the transport turntable. After the testing is completed, the external thread of the valve body is wound with raw tape by the integrated testing tape winding equipment, so that the winding quality of the raw tape is guaranteed while the degree of automation of the equipment is guaranteed. The market competitiveness of the product is improved by high-quality raw tape winding, so that the installers of the ball valve can be more relaxed when performing the installation operation.

Description

Technical Field

[0001] The invention relates to a valve body, in particular to a production process of a ball valve. Background Art

[0002] like Figure 1 As shown, a ball valve includes a valve body 90, on which a water inlet 91 and a pair of water outlets 92 are arranged. A valve stem and a hand wheel 94 are also arranged on the top of the valve body 90. Internal threads are provided in the two water outlets 92, and an external thread 95 is provided on the outer side of the water inlet 91.

[0003] At present, a Chinese patent with announcement number CN107756602B discloses a production process for a high-temperature leak-free ball valve. The production steps are as follows: select lead brass as the main material and cut it, sandblast the valve body and the valve cap, polish the ball valve body, manufacture the sealing ring, fine-process the sealing ring, assemble the components, and perform a sealing test. The above production process ensures the high sealing and wear resistance of the ball valve.

[0004] The above patent still has shortcomings. The above ball valve is provided with a water inlet and a pair of water outlets. A thread is provided on the outside of the water inlet. Usually, the connection sealing between the external thread and the internal thread is low, which can easily lead to water leakage. The general solution is to wrap the raw tape to increase the sealing. However, wrapping the raw tape requires certain skills. Non-professional operators cannot complete the wrapping well, and even professional operators cannot guarantee the sealing after wrapping. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a ball valve production process, which completes the winding of the raw tape during production.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: a ball valve production process, comprising the following steps:

[0007] S1: Cutting, select brass as the material and use a cutting machine to cut it into blanks of appropriate size;

[0008] S2: Forging, forging the valve body and valve cover through hydraulic forging equipment;

[0009] S3: Rough and fine machining, rough machining and fine machining of the valve body surface and inner hole through the machining center;

[0010] S4: Turning: turning the valve ball and valve stem through a high-precision CNC lathe;

[0011] S5: Assemble the valve body, valve cover, valve ball, valve stem and other accessories one by one;

[0012] S6: Performance testing, using integrated testing tape winding equipment to test the ball valve for tightness and pressure resistance;

[0013] S7: Winding: The ball valve after testing is wound with raw tape through the integrated testing and winding equipment to ensure the winding effect;

[0014] S8: Packing;

[0015] The integrated detection winding equipment in S7 includes a loading component, a unloading component, a transport turntable, a sealing and pressure resistance detection component, and a winding component. The loading component is used to place the valve body into the transport turntable, and the transport turntable drives the valve body to move to the sealing and pressure resistance detection component and the winding component. The unloading component is used to take the valve body out from the transport turntable.

[0016] Through the above technical means, the integrated inspection and tape winding equipment is used to wind the raw tape around the external threads of the valve body after the inspection is completed, ensuring the quality of the raw tape winding while ensuring the degree of automation of the equipment. The market competitiveness of the product is improved through high-quality raw tape winding, making it easier for ball valve installers to perform installation operations.

[0017] Preferably, the winding assembly includes a moving part, a power roller 1, a power roller 2, a threaded pressure head, a raw tape bin and a cutting piece. The power roller 1, the power roller 2 and the threaded pressure head are arranged in a herringbone shape and form a winding cavity. The tail of the threaded pressure head is also provided with a motor 1 and a cylinder 1. The tails of the power roller 1 and the power roller 2 are both provided with a motor 2. The raw tape bin is arranged at the side end of the winding cavity. The cutting piece is arranged between the raw tape bin and the winding cavity. The moving part drives the power roller 1, the power roller 2 and the threaded pressure head to move toward the transport turntable.

[0018] Through the above-mentioned technical means, a winding cavity is formed by power roller one, power roller two and thread pressing head, and the thread pressing head is driven by cylinder one to cooperate with the external thread, so that the raw tape is pressed tightly in the thread gap while clamping the valve body. The power roller one, power roller two and thread pressing head are driven by the moving part to move toward the valve body as a whole, so as to facilitate the clamping of the valve body, and the cutting of the raw tape is achieved by the cutting part.

[0019] Preferably, the cutting piece includes a pneumatic clamp, a second cylinder, and a cutting knife, wherein the cutting knife is arranged at the output end of the second cylinder, and the second cylinder is arranged at the side end of the pneumatic clamp. The side end of the raw tape bin is also provided with a third cylinder, and the third cylinder drives the raw tape bin to move toward the direction of the power roller and causes the raw tape to fall into the winding chamber.

[0020] Through the above-mentioned technical means, the raw tape is clamped by the pneumatic clamp to make the raw tape tensioned, and the cutting knife is driven by cylinder two to move to achieve the cutting of the raw tape, and the raw tape bin is driven by cylinder three to move so that the cut point of the raw tape moves toward the winding chamber, thereby achieving the loading of the raw tape.

[0021] Preferably, the transport turntable includes a reference turntable, an annular turntable and motor three, a countersunk hole is opened in the middle of the reference turntable, the annular turntable is rotatably set in the countersunk hole, the annular turntable is provided with internal teeth, the output end of motor three is provided with a gear, the gear is meshed with the internal teeth, a plurality of material transport rings are provided on the annular turntable, the material transport rings are penetrated with material transport holes, the reference turntable is also provided with a top hole relative to the winding assembly, a pushing cylinder is provided at the bottom of the top hole, and a pushing head is provided at the output end of the pushing cylinder.

[0022] Through the above-mentioned technical means, the rotation accuracy of the annular turntable is increased through the cooperation between the annular turntable and the countersunk hole, and the rotation of the annular turntable is completed through the meshing of the gears and the internal teeth. By arranging a pushing cylinder at the bottom of the top hole, the valve body in the transport ring is pushed out, making it convenient for the winding assembly to clamp the valve body.

[0023] Preferably, the sealing and pressure-resistant detection assembly includes a pressure pipe fitting 1, a pressure pipe fitting 2 and a rotary valve fitting. A water hole is provided on the reference turntable. A water pipe connector 1 is connected to the bottom of the water hole. The pressure pipe fitting 1 has the same structure as the pressure pipe fitting 2 and includes a cylinder 5 and a water pipe connector 2. A sealing rubber ring is provided at the end of the water pipe connector 2. The cylinder 5 drives the water pipe connector 2 to press against the water inlet and the water outlet and connects the water hole with the other water outlet. The rotary valve fitting is used to rotate the hand wheel.

[0024] Through the above technical means, water enters the valve body through the compression fitting 1, the compression fitting 2 and the water hole corresponding to two water outlets and one water inlet respectively, and the fluidity of the valve body is tested. The hand wheel is turned by turning the valve piece to conduct sealing and pressure resistance tests on the valve body.

[0025] Preferably, the rotary valve component includes a linear slide one, a motor four and a claw, the motor four is arranged at the output end of the linear slide one, the claw is slidably arranged on the output shaft of the motor four, a spring is also arranged between the claw and the motor four, and a mounting plate is also arranged at the front end of the output shaft of the motor four, and a micro switch is arranged on the mounting plate in the direction of the claw.

[0026] Through the above technical means, the linear slide drives the motor four and the claw to move forward and backward, and the motor four drives the claw to rotate. Through the cooperation of the spring and the mounting plate, and the setting of the micro switch, the claw can adapt to the handwheel at different angles. When the claw is stuck in the gap of the handwheel, the electrical signal sent by the micro switch realizes the rotation of the motor four.

[0027] Preferably, a linear slide 2 and a water shield are also provided at the front end of the winding assembly. The water shield is provided at the output end of the linear slide 2. When the winding assembly drives the valve body to rotate, the linear slide 2 drives the water shield to move and cover the valve body.

[0028] Through the above technical means, the water retaining cover is driven to move by the linear slide 2, so as to block the outside of the valve body when the winding assembly drives the valve body to rotate, and catch the water remaining in the valve body and thrown out when the valve body rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the valve body;

[0030] Figure 2 It is a structural schematic diagram of an embodiment;

[0031] Figure 3 Schematic diagram of the winding assembly structure Figure 1 ;

[0032] Figure 4 Schematic diagram of the winding assembly structure Figure 2 ;

[0033] Figure 5 It is a partial schematic diagram of the sealing pressure resistance detection component;

[0034] Figure 6 It is a structural schematic diagram of a transport turntable;

[0035] Figure 7 A partial cross-sectional view of an embodiment Figure 1 ;

[0036] Figure 8 A partial cross-sectional view of an embodiment Figure 2 ;

[0037] Fig. 9 It is a partial cross-sectional view of the rotary valve member.

[0038] Figure numerals: 1. integrated detection winding equipment; 2. feeding assembly; 3. unloading assembly; 4. transport turntable; 5. sealing and pressure resistance detection assembly; 6. winding assembly; 7. moving part; 8. power roller one; 9. power roller two; 10. threaded pressure head; 11. raw material belt bin; 12. cutting part; 13. motor one; 14. cylinder one; 15. motor two; 16. mounting frame; 17. linear electric cylinder; 18. pneumatic clamp; 19. cylinder two; 20. cutting knife; 21. cylinder three; 22. winding chamber; 23. reference turntable; 24. annular turntable; 25. motor three; 26. countersunk hole; 27. internal tooth; 28. gear; 29 , material transport ring; 30, material transport hole; 31, top hole; 32, push cylinder; 33, push head; 34, pipe pressing fitting 1; 35, pipe pressing fitting 2; 36, rotary valve fitting; 37, water hole; 38, water pipe joint 1; 39, water pipe joint 2; 40, sealing rubber ring; 41, linear slide 1; 42, motor 4; 43, claw; 44, keyway; 45, slide hole; 46, slide key; 47, spring; 48, mounting plate; 49, micro switch; 50, linear slide 2; 51, water shield; 52, cylinder 4; 53, cylinder 5; 90, valve body; 91, water inlet; 92, water outlet; 94, handwheel; 95, external thread. DETAILED DESCRIPTION

[0039] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0040] A ball valve production process comprises the following steps:

[0041] S1: Cutting, select brass as the material and use a cutting machine to cut it into blanks of appropriate size;

[0042] S2: Forging, forging the valve body 90 and the valve cover by hydraulic forging equipment;

[0043] S3: rough and fine machining, rough machining and fine machining of the surface and inner hole of the valve body 90 by a machining center;

[0044] S4: Turning: turning the valve ball and valve stem through a high-precision CNC lathe;

[0045] S5: Assemble the valve body 90, valve cover, valve ball, valve stem and other accessories one by one;

[0046] S6: Performance testing: the ball valve is tested for tightness and pressure resistance through the integrated testing tape winding device 1;

[0047] S7: Winding: the ball valve after the inspection is wound with raw tape by the integrated inspection tape winding device 1 to ensure the winding effect;

[0048] S8: Packing;

[0049] like Figure 2 As shown, the integrated detection winding equipment 1 in S7 includes a loading component 2, a unloading component 3, a transport turntable 4, a sealing and pressure resistance detection component 5, and a winding component 6. The loading component 2 and the unloading component 3 have the same structure, both of which are robots and conveyor belts, which are prior arts. The loading component 2 is used to place the valve body 90 into the transport turntable 4, and the transport turntable 4 drives the valve body 90 to move to the sealing and pressure resistance detection component 5 and the winding component 6. The unloading component 3 is used to take the valve body 90 out from the transport turntable 4.

[0050] like Figure 3 , Figure 4 As shown, the winding assembly 6 includes a moving part 7, a power roller 18, a power roller 29, a thread pressing head 10, a raw material tape bin 11 and a cutting part 12. The power roller 18, the power roller 29 and the thread pressing head 10 are arranged in a herringbone shape to form a winding cavity 22. A motor 13 and a cylinder 14 are also provided at the tail of the thread pressing head 10. The motor 13 is arranged at the output end of the cylinder 14, and the thread pressing head 10 is arranged at the output end of the motor 13. The motor 13 drives the thread pressing head 10 to rotate, and the power roller 8 and the power roller 9 are arranged in a herringbone shape to form a winding cavity 22. The power rollers 29 are both sleeved with rubber rings, and the tails of the power rollers 18 and 29 are both provided with motors 25, which drive the power rollers 18 and 29 to rotate. The raw tape bin 11 is arranged at the side end of the winding chamber 22, and the cutting piece 12 is arranged between the raw tape bin 11 and the winding chamber 22. The moving part 7 includes a mounting frame 16 and a linear electric cylinder 17. The motors 215 and the cylinders 14 are both installed on the mounting frame 16, and the linear electric cylinder 17 drives the mounting frame 16 to move toward the transport turntable 4.

[0051] The cutting piece 12 includes a pneumatic clamp 18, a cylinder 2 19, a cutting knife 20 and a cylinder 4 52. The cutting knife 20 is arranged at the output end of the cylinder 2 19. The cylinder 2 19 is arranged at the side end of the pneumatic clamp 18. The side end of the raw tape bin 11 is also provided with a cylinder 3 21. The cylinder 3 21 drives the raw tape bin 11 to move toward the power roller 1 8 and makes the raw tape fall into the winding chamber 22. The pneumatic clamp 18 and the cylinder 2 19 are both arranged at the output end of the cylinder 4 52. After the raw tape is wound, the cylinder 3 21 drives the raw tape bin 11 to move toward the power roller 1 8 and makes the raw tape fall into the winding chamber 22. The raw tape bin 11 is moved away from the winding chamber 22, and the cylinder four 52 drives the pneumatic clamp 18 and the cylinder two 19 to extend. After the pneumatic clamp 18 is driven to clamp the raw tape, the cylinder two 19 drives the cutting knife 20 to move and cut the raw tape. The pneumatic clamp 18 increases the tension of the raw tape to prevent the cutting knife 20 from having difficulty in cutting. When the valve body 90 is separated from the winding chamber 22, the pneumatic clamp 18 opens and the cylinder three 21 is reset to move the cross section of the raw tape toward the winding chamber 22, so that the next valve body 90 is pressed on the raw tape.

[0052] like Figure 6 , Figure 7As shown, the transport turntable 4 includes a reference turntable 23, an annular turntable 24 and a motor 25. A countersunk hole 26 is opened in the middle of the reference turntable 23. The annular turntable 24 is rotatably set in the countersunk hole 26. An internal tooth 27 is set in the annular turntable 24. A gear 28 is set at the output end of the motor 25. The gear 28 is meshed with the internal tooth 27. A material transport ring 29 is set on the station hole. The loading component 2 places the valve body 90 in the material transport ring 29. When the annular turntable 24 rotates, the valve body 90 is driven to rotate. The material transport ring 29 is penetrated by a material transport hole 30. The reference turntable 23 is also provided with a top hole 31 relative to the winding component 6. A push gas is set at the bottom of the top hole 31. Cylinder 32, a pushing head 33 is provided at the output end of the pushing cylinder 32, and the pushing head 33 matches the water outlet 92 of the valve body 90. When the raw tape needs to be wound around the valve body 90, the pushing cylinder 32 pushes the pushing head 33 to move upward, and moves the valve body 90 to the side end of the winding assembly 6. When clamping the valve body 90, the cylinder 14 drives the motor 13 and the threaded press head 10 to move upward, and the linear electric cylinder 17 drives the mounting frame 16 to move toward the transport turntable 4, and moves the power roller 1 8 and the power roller 2 9 to the lower end of the water inlet 91 of the valve body 90, and then the cylinder 14 drives the threaded press head 10 to move downward to clamp the valve body 90.

[0053] like Figure 5 , Figure 8 As shown, the sealing and pressure resistance detection component 5 includes a pressure pipe component 1 34, a pressure pipe component 2 35 and a rotary valve component 36. The pressure pipe component 1 34 and the pressure pipe component 2 35 are respectively arranged on the upper side and the outer side of the annular turntable 24, and the rotary valve component 36 is arranged in the middle of the annular turntable 24. A water hole 37 is opened on the reference turntable 23, and a water pipe connector 1 38 is connected to the bottom of the water hole 37. The pressure pipe component 1 34 and the pressure pipe component 2 35 have the same structure, including a cylinder 5 53 and a water pipe connector 2 39. A sealing rubber ring 40 is arranged at the end of the water pipe connector 2 39. The cylinder 5 53 drives the water pipe connector 2 39 to abut against the water inlet 91 and the water outlet 92, and makes the water hole 37 abut against and communicate with the other water outlet 92, so as to facilitate the fluidity detection, pressure resistance detection and sealing detection of the valve body 90.

[0054] like Figure 8 , Fig. 9As shown, the rotary valve member 36 includes a linear slide 41, a motor 42 and a claw 43. The motor 42 is arranged at the output end of the linear slide 41. The claw 43 is slidably arranged on the output shaft of the motor 42. A key slot 44 is provided on the output shaft of the motor 42. A sliding hole 45 is provided in the middle of the claw 43. A sliding key 46 is provided in the sliding hole 45. The sliding key 46 cooperates with the key slot 44 and limits the rotation between the claw 43 and the output shaft of the motor 42. A spring 47 is also sleeved between the claw 43 and the motor 42. A mounting plate 48 is also provided at the front end of the output shaft of the motor 42. The mounting plate 48 is fixed to the output shaft of the motor 42 by screws. The claw 43 can be installed by disassembling the mounting plate 48. The mounting plate 48 faces the A micro switch 49 is provided in the direction of the clamping claw 43. When the hand wheel 94 needs to be turned, the linear slide 41 drives the motor 42 and the clamping claw 43 to move toward the hand wheel 94. Because the position of the hand wheel 94 is not unique when the hand wheel 94 is installed, the clamping claw 43 cannot be accurately inserted into the gap of the hand wheel 94. When the clamping claw 43 is against the hand wheel 94, the tail of the clamping claw 43 compresses the spring 47, so that the micro switch 49 is in a state where the power cannot be cut off. At this time, the motor 42 rotates the clamping claw 43. When the clamping claw 43 is inserted into the gap of the hand wheel 94, the elastic energy stored in the spring 47 is released, and the clamping claw 43 touches the micro switch 49, thereby prompting through an electrical signal that the clamping claw 43 has been inserted into place, which is convenient for the subsequent driving of the hand wheel 94 to rotate.

[0055] like Figure 6 , Figure 7 As shown, a linear slide 2 50 and a water shield 51 are also provided at the front end of the winding assembly 6. The water shield 51 is provided at the output end of the linear slide 2 50. When the winding assembly 6 drives the valve body 90 to rotate, the linear slide 2 50 drives the water shield 51 to move and cover the valve body 90, thereby catching the water remaining in the valve body 90 and thrown out. The linear slide 2 50 is also provided in the middle of the annular turntable 24, so that through the meshing of the gear 28 and the inner tooth 27, and through the cooperation of the reference turntable 23 and the annular turntable 24, the annular turntable 24 avoids other components while increasing its rotation stability and accuracy.

[0056] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A ball valve production process, characterized in that: The following steps are involved: S1: Cutting, select brass as the material and use a cutting machine to cut it into blanks of appropriate size; S2: Forging, forging the valve body (90) and the valve cover by means of a hydraulic forging device; S3: rough and fine machining, rough machining and fine machining of the surface and inner hole of the valve body (90) by a machining center; S4: Turning: turning the valve ball and valve stem through a high-precision CNC lathe; S5: Assembling, assembling the valve body (90), the valve cover, the valve ball, the valve stem and other accessories one by one; S6: Performance testing, using the integrated testing tape winding equipment (1) to perform a sealing test and a pressure test on the ball valve; S7: Winding: winding the ball valve after the inspection with raw tape through the integrated inspection tape winding equipment (1) to ensure the winding effect; S8: Packing; The integrated detection tape winding device (1) in S7 comprises a loading component (2), a unloading component (3), a transport turntable (4), a sealing and pressure resistance detection component (5), and a winding component (6); the loading component (2) is used to place the valve body (90) into the transport turntable (4); the transport turntable (4) drives the valve body (90) to move to the sealing and pressure resistance detection component (5) and the winding component (6); and the unloading component (3) is used to take the valve body (90) out of the transport turntable (4); The winding assembly (6) comprises a moving part (7), a power roller 1 (8), a power roller 2 (9), a thread pressing head (10), a raw material tape bin (11) and a cutting piece (12); the power roller 1 (8), the power roller 2 (9) and the thread pressing head (10) are arranged in a herringbone shape and form a winding chamber (22); a motor 1 (13) and a cylinder 1 (14) are also provided at the tail of the thread pressing head (10); a motor 2 (15) is provided at the tail of the power roller 1 (8) and the power roller 2 (9); the raw material tape bin (11) is arranged at the side end of the winding chamber (22); the cutting piece (12) is arranged between the raw material tape bin (11) and the winding chamber (22); the moving part (7) drives the power roller 1 (8), the power roller 2 (9) and the thread pressing head (10) to move toward the transport turntable (4); The transport turntable (4) comprises a reference turntable (23), an annular turntable (24) and a motor (25). A countersunk hole (26) is provided in the middle of the reference turntable (23). The annular turntable (24) is rotatably arranged in the countersunk hole (26). An internal tooth (27) is arranged in the annular turntable (24). A gear (28) is arranged at the output end of the motor (25). The gear (28) meshes with the internal tooth (27). A plurality of material transport rings (28) are arranged on the annular turntable (24). 29), the material transport ring (29) is provided with a material transport hole (30) through it, the reference turntable (23) is further provided with a top hole (31) relative to the winding assembly (6), a material pushing cylinder (32) is provided at the bottom of the top hole (31), and a material pushing head (33) is provided at the output end of the material pushing cylinder (32), when it is necessary to wind the raw tape around the valve body (90), the material pushing cylinder (32) pushes the material pushing head (33) to move upwards, and moves the valve body (90) to the side end of the winding assembly (6); The sealing pressure resistance detection assembly (5) comprises a first pressing pipe member (34), a second pressing pipe member (35) and a rotary valve member (36). A water hole (37) is provided on the reference turntable (23). A water pipe joint (38) is connected to the bottom of the water hole (37). The first pressing pipe member (34) has the same structure as the second pressing pipe member (35), and comprises a fifth cylinder (53) and a second water pipe joint (39). A sealing rubber ring (40) is provided at the end of the second water pipe joint (39). The fifth cylinder (53) drives the second water pipe joint (39) to abut against the water inlet (91) and the water outlet (92), and connects the water hole (37) with the other water outlet (92). The rotary valve member (36) is used to rotate a hand wheel (94). The front end of the winding assembly (6) is also provided with a second linear slide (50) and a water shield (51). The water shield (51) is arranged at the output end of the second linear slide (50). When the winding assembly (6) drives the valve body (90) to rotate, the second linear slide (50) drives the water shield (51) to move and cover the valve body (90).

2. A ball valve production process according to claim 1, characterized in that: The cutting piece (12) comprises a pneumatic clamp (18), a second cylinder (19), and a cutting knife (20). The cutting knife (20) is arranged at the output end of the second cylinder (19). The second cylinder (19) is arranged at the side end of the pneumatic clamp (18). The side end of the raw tape bin (11) is also provided with a third cylinder (21). The third cylinder (21) drives the raw tape bin (11) to move toward the direction of the power roller (8) and causes the raw tape to fall into the winding chamber (22).

3. A ball valve production process according to claim 1, characterized in that: The rotary valve component (36) includes a linear slide (41), a motor (42) and a claw (43), wherein the motor (42) is arranged at the output end of the linear slide (41), and the claw (43) is slidably arranged on the output shaft of the motor (42). A spring (47) is also sleeved between the claw (43) and the motor (42), and a mounting plate (48) is also arranged at the front end of the output shaft of the motor (42), and a micro switch (49) is arranged on the mounting plate (48) in the direction toward the claw (43).

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