Water meter case, water meter case processing fixture and processing technology

Abstract

The present application relates to the field of water meter cases, and in particular to a water meter case, a water meter case processing fixture, and a processing process, comprising a shell, a water inlet baffle, a water outlet baffle, a water inlet flow pipe, and a water outlet flow pipe, wherein the water inlet baffle and the water outlet baffle are welded and fixed on both sides of the shell, and an installation cavity for installing a water meter movement is formed between the shell, the water inlet baffle, and the water outlet baffle, the water inlet flow pipe is welded and fixed on the water inlet baffle, and the water outlet flow pipe is welded and fixed on the water outlet baffle, and the inner cavity of the water inlet flow pipe, the installation cavity, and the inner cavity of the water outlet flow pipe are connected in sequence. The arrangement of the shell, the water inlet baffle, the water outlet baffle, the water inlet flow pipe, and the water outlet flow pipe in the present application realizes the welding molding of the water meter case, without the need for mold casting and one-piece molding, thereby improving the yield rate of the water meter case and reducing the production cost of the water meter case.

Description

Technical Field

[0001] The present application relates to the field of water meter cases, and in particular to a water meter case, a water meter case processing fixture, and a processing technology. Background Art

[0002] A water meter is an instrument for measuring water flow, mainly the cumulative flow of water. It is generally divided into two categories: volumetric water meter and velocity water meter.

[0003] The water meter case in the related art includes a case body, a water inlet pipe and a water outlet pipe. The water inlet pipe and the water outlet pipe are connected to both sides of the case body and are integrally formed by mold casting to form the water meter case.

[0004] The water meter housing is formed in one piece by a mold casting method, but the yield rate of the product is low and the processing is difficult, thereby increasing the production cost of the water meter housing. Summary of the Invention

[0005] In order to improve the production cost problem of water meter cases, the present application provides a water meter case, a water meter case processing fixture and a processing process.

[0006] In the first aspect, the present application provides a water meter housing, which adopts the following technical solution:

[0007] A water meter case includes a shell, a water inlet baffle, a water outlet baffle, a water inlet flow pipe and a water outlet flow pipe. The water inlet baffle and the water outlet baffle are welded and fixed on both sides of the shell. An installation cavity for installing a water meter movement is formed between the shell, the water inlet baffle and the water outlet baffle. The water inlet flow pipe is welded and fixed on the water inlet baffle, and the water outlet flow pipe is welded and fixed on the water outlet baffle. The inner cavity of the water inlet flow pipe, the installation cavity and the inner cavity of the water outlet flow pipe are connected in sequence.

[0008] By adopting the above technical solution, the shell, water inlet baffle, water outlet baffle, water inlet flow pipe and water outlet flow pipe can be independently produced. The water inlet baffle and the water outlet baffle are first welded and fixed on both sides of the shell, the water inlet flow pipe is welded and fixed on the water inlet baffle, and the water outlet flow pipe is welded and fixed on the water outlet baffle. The inner cavity of the water inlet flow pipe, the installation cavity and the inner cavity of the water outlet flow pipe are connected in sequence, realizing the welding forming of the water meter shell, without the need for mold casting and one-piece forming, thereby improving the yield of the water meter shell and reducing the production cost of the water meter shell.

[0009] Optionally, a fixing piece is welded and fixed on the shell, and the fixing piece can fix the water meter movement.

[0010] By adopting the above technical solution, the fixing part is welded to the shell, the water meter movement is installed in the installation cavity, and the movement is fixed to the fixing part, so that the water meter movement is not easily offset in the installation cavity, thereby improving the stability of the water meter movement in the installation cavity.

[0011] Optionally, the water inlet flow pipe is coaxially welded with a water inlet flange, and the water outlet flow pipe is coaxially welded with a water outlet flange.

[0012] By adopting the above technical solution, the water inlet flange and the water outlet flange are processed separately, the water inlet flange is coaxially welded and fixed on the water inlet flow pipe, and the water outlet flange is coaxially welded and fixed on the water outlet flow pipe. The water inlet flange and the water outlet flange are used for connection to the external water pipe, so that the external water pipe is not easy to separate from the water meter case, thereby improving the connection between the external pipe and the water meter case.

[0013] In a second aspect, the present application provides a water meter case processing fixture, which adopts the following technical solution:

[0014] A water meter case processing fixture is used to process water meter cases, including a cold pressing component, a limit device and a positioning device. The cold pressing component includes an upper module and a lower module. When the upper module and the lower module are molded together, a cavity for forming the shell is formed. The limit device includes a limit seat and a limit assembly. The limit seat is provided with a limit cavity for accommodating the shell. The limit assembly is connected to the limit seat. The limit assembly is used to limit the fixing part, the water inlet baffle and the water outlet baffle on the shell. The positioning device includes a positioning assembly and two positioning baffles. The positioning baffle is provided with a positioning cavity for accommodating an inlet flow pipe or an outlet flow pipe. The positioning assembly is used to tightly fix the two positioning baffles on the shell, and the inlet flow pipe and the outlet flow pipe are coaxially limited on the inlet baffle and the outlet baffle in a one-to-one correspondence.

[0015] By adopting the above technical scheme, when the water meter case is processed, when the upper module and the lower module are closed, the shell is formed in the cavity, and the shell is taken out of the cavity and placed in the limiting cavity. The component limits the fixing parts, water inlet baffle and water outlet baffle on the shell, so that the fixing parts, water inlet baffle and water outlet baffle are not easy to deviate on the shell, thereby improving the processing quality of the fixing parts, water inlet baffle and water outlet baffle on the shell; then the water inlet flow pipe and the water outlet flow pipe are respectively abutted against the water inlet baffle and the water outlet baffle, and the water inlet flow pipe and the water outlet flow pipe are respectively embedded in the positioning cavity, and the positioning component presses the two positioning baffles tightly on the shell, and the water inlet flow pipe and the water outlet flow pipe are coaxially limited on the water inlet baffle and the water outlet baffle, so that the water inlet flow pipe and the water outlet flow pipe are not easy to deviate when welding on the water inlet baffle and the water outlet baffle, thereby improving the yield of the water meter case and reducing the production cost of the water meter case.

[0016] Optionally, the upper module is slidably connected to the lower module, and when the blank plate is placed between the upper module and the lower module, the upper module slides toward the lower module, and the upper module squeezes the blank plate and drives the blank plate to deform toward the lower module to form a shell. The upper mold and the lower mold are clamped and the shell is located in the mold cavity. The upper module is connected to a positioning rod, and a positioning hole is provided on the lower module for the positioning rod to slide. When the upper module and the lower module are clamped, the positioning rod is slidably connected to the inner wall of the positioning hole.

[0017] By adopting the above technical solution, when processing the shell, the blank plate is placed between the lower template and the lower module, the upper module slides toward the direction close to the lower module, and the upper module squeezes the blank plate to phase change toward the direction close to the lower module. The blank plate is cold-pressed to form a shell and is located in the mold cavity, thereby realizing cold pressing of the shell; at the same time, when the upper module slides toward the direction close to the lower module, the positioning rod is slidably connected to the inner wall of the positioning hole, so that the upper module is not easily offset when sliding on the lower module, thereby improving the production quality of the shell.

[0018] Optionally, a stripping assembly is connected to the lower module, and the stripping assembly includes a stripping seat, a stripping plate, a stripping rod and an elastic member, the stripping seat is connected to the side of the lower module away from the upper module, the stripping seat is provided with a sliding space for the stripping plate to slide, the sliding direction of the stripping plate and the sliding direction of the upper module are parallel to each other, the stripping rod is connected to the side of the stripping plate facing the lower module, the lower module is provided with a stripping groove for the stripping rod to pass through, the stripping groove is connected to the cavity, the end of the stripping rod can abut the shell, one end of the elastic member in the elastic direction is connected to the inner wall of the sliding space, and the other end of the elastic member in the elastic direction is connected to the stripping plate, and the elastic member has a tendency to elastically drive the end of the stripping rod to pass through the stripping groove and be located in the cavity.

[0019] By adopting the above technical solution, when the upper module and the lower module are closed, the upper module and the lower module extrude the blank plate to form a shell, and at the same time, the shell overcomes the elastic force of the elastic part to drive the stripping rod to slide in the direction away from the lower module, and the end of the stripping rod is flush with the inner wall of the cavity. When the shell is cold-pressed, the upper module slides in the direction away from the lower module, and the pressure of the upper module on the shell disappears. The elastic force of the elastic part drives the stripping plate to slide in the direction close to the lower module, driving the stripping rod to protrude from the inner wall of the cavity and drive the shell out of the cavity, realizing automatic unloading of the shell, and there is no need for the staff to remove the shell along the inner wall of the cavity, thereby reducing the workload of the staff and improving the production efficiency of the water meter shell.

[0020] Optionally, a guide rod is connected to the stripping seat, one end of the guide rod is connected in the sliding space, and the other end of the guide rod is connected to the lower module. The axis of the guide rod and the sliding direction of the stripping plate are parallel to each other, and the stripping plate is provided with a sliding hole for the guide rod to slide.

[0021] By adopting the above technical solution, when the stripper plate slides in the sliding space, the guide rod slides along the inner wall of the sliding hole, and the stripper plate is not easily offset when sliding in the sliding space, thereby improving the sliding stability of the stripper plate.

[0022] Optionally, the limit assembly includes a limit ring, a limit screw, a limit nut and two limit baffles, the limit baffle is provided with a limit hole for the limit screw to pass through, one of the limit baffles is used to abut the water inlet baffle, and the other limit baffle is used to abut the water outlet baffle, the limit ring can be embedded in the shell, the limit ring has a limit surface for placing the fixing part, when the shell is embedded in the limit cavity, the limit ring is embedded in the shell, the fixing part is placed on the limit surface, the fixing part is limited on the shell, the water inlet baffle and the water outlet baffle are placed on both sides of the shell, the two limit baffles correspond one-to-one to abut the water inlet baffle and the water outlet baffle, one end of the limit screw is passed through the limit hole and is threadedly fixed on the limit nut, the two limit baffle surfaces correspond one-to-one to the water inlet baffle surface and the water outlet baffle surface, and the water inlet baffle and the water outlet baffle are limited on both sides of the shell.

[0023] By adopting the above technical solution, when the water inlet baffle, water outlet baffle and fixing parts need to be welded and fixed on the shell, the staff places the shell in the limiting cavity, the limiting ring is embedded in the shell, the outer wall of the limiting ring abuts the inner wall of the shell to form a limit, the fixing part is placed on the limiting surface, and the fixing part is limited on the casing, which facilitates the welding and fixing of the fixing part on the shell. When the welding of the fixing part is completed, the limiting ring is taken out, the water inlet baffle and the water outlet baffle are placed on both sides of the shell, the two limiting baffles are matched and abutted with the water inlet baffle and the water outlet baffle one by one, one end of the screw is penetrated with a limiting hole and threadedly tightened to the limiting nut, the two limiting baffle surfaces correspond to the water inlet baffle surface and the water outlet baffle surface one by one, and the water inlet baffle and the water outlet baffle are pressed against both sides of the shell, so that the staff can stably weld the water inlet baffle and the water outlet baffle to the shell, thereby improving the finished product rate of the water meter shell.

[0024] Optionally, the positioning device also includes a positioning seat, the positioning seat is provided with a positioning cavity for accommodating the shell, the positioning assembly includes a plurality of positioning screws and a plurality of positioning nuts, the positioning screws correspond to the positioning nuts one by one and are threadedly connected, the positioning baffles are provided with positioning grooves for accommodating the water inlet flow pipe or the water outlet flow pipe, the positioning grooves are connected to the positioning cavity, and the inner wall of the positioning grooves is provided with a plurality of fixing holes for the positioning screws to pass through. When the shell is placed in the positioning cavity, one end of the water inlet flow pipe abuts the water inlet baffle, and the other end of the water inlet flow pipe is embedded in one of the positioning grooves, one end of the water outlet flow pipe abuts the water outlet baffle, and the other end of the water outlet flow pipe is embedded in the other positioning groove, the end of the positioning screw is passed through a fixing hole and is threadedly fixed to the positioning nut, the two positioning baffles are pressed against the shell to form a fixation, the water outlet flow pipe limit is located on the water outlet baffle, and the water inlet flow pipe limit is located on the water outlet baffle.

[0025] By adopting the above technical solution, when the water inlet flow pipe and the water outlet flow pipe need to be welded and fixed on the water inlet baffle and the water outlet baffle one by one, the shell is embedded in the positioning cavity to form a limit, one end of the water inlet flow pipe abuts the water inlet baffle, and the other end of the water inlet flow pipe is embedded in one of the positioning grooves, one end of the water outlet flow pipe abuts the water outlet baffle, and the other end of the water outlet flow pipe is embedded in another positioning groove, the positioning screw corresponds to the fixing hole one by one, one end of the positioning screw is passed through the fixing hole and is threadedly connected to the positioning nut, the positioning baffle surface is pressed against the positioning seat to form a fixation, the water outlet flow pipe limit is located on the water outlet baffle, and at the same time the water inlet flow pipe limit is located on the water inlet baffle, so that the water inlet flow pipe and the water outlet flow pipe are not easy to deviate, thereby improving the finished product rate of the water meter case.

[0026] In a third aspect, the present application provides a water meter case processing technology, which adopts the following technical solutions:

[0027] A water meter shell processing process includes the following steps:

[0028] Shell molding, the blank plate material is placed in a cold pressing assembly placed in a water meter shell processing fixture. When the upper and lower modules are closed, the blank plate is located in the cavity and cold pressed to form a shell;

[0029] The fixing parts, water inlet baffle and water outlet baffle are welded and fixed on the shell, and the shell is placed in the limit cavity. The fixing parts, water inlet baffle and water outlet baffle are limited on the shell by the limit assembly. After the power and program of the laser welding equipment are debugged, the connection parts to be welded are fully welded and fixed;

[0030] The inlet and outlet flow pipes are welded and placed on both sides of the shell. The two positioning baffles correspond to the inlet and outlet flow pipes one-to-one. The inlet and outlet flow pipes are embedded in the positioning cavity one-to-one. The positioning assembly fixes the two positioning baffles tightly to the shell. The inlet and outlet flow pipes are coaxially limited on the inlet and outlet baffles one-to-one. The laser welding equipment welds the weld seam at a 45° angle.

[0031] During water meter case processing, the water inlet flange and the water outlet flange are aligned with the water inlet flow pipe and the water outlet flow pipe one by one, and the laser cutting machine fully welds the welding seam to fix it.

[0032] By adopting the above technical scheme, the shell, water inlet baffle, water outlet baffle, fixing parts, water inlet flange, water outlet flange, water inlet flow pipe and water outlet flow pipe can be independently produced respectively. The water inlet baffle and the water outlet baffle are first welded and fixed on both sides of the shell, the water inlet flow pipe is welded and fixed on the water inlet baffle, the water outlet flow pipe is welded and fixed on the water outlet baffle, the water inlet flange is coaxially welded and fixed on the water inlet flow pipe, and the water outlet flange is coaxially welded and fixed on the water outlet flow pipe, so that the water meter shell components are welded and formed in sequence, and there is no need for mold casting for one-piece forming, thereby improving the yield of the water meter shell and reducing the production cost of the water meter shell.

[0033] In summary, this application includes at least one of the following beneficial technical effects:

[0034] 1. The arrangement of the housing, water inlet baffle, water outlet baffle, water inlet flow pipe and water outlet flow pipe enables the water meter housing to be welded and formed in one piece without the need for mold casting, thereby improving the yield of the water meter housing and reducing the production cost of the water meter housing;

[0035] 2. The setting of the limit seat and the limit assembly makes it difficult for the fixing parts, the water inlet baffle and the water outlet baffle to deviate on the shell, thereby improving the processing quality of the fixing parts, the water inlet baffle and the water outlet baffle on the shell;

[0036] 3. The arrangement of the stripper seat, stripper plate, stripper rod and elastic member realizes the automatic unloading of the shell, eliminating the need for workers to remove the shell along the inner wall of the cavity, thereby reducing the workload of the workers and improving the production efficiency of the water meter shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the water meter case in the embodiment of the present application.

[0038] Figure 2 It is a schematic diagram of the overall structure of the shell and cold pressing assembly in the embodiment of the present application.

[0039] Figure 3 It is a schematic diagram of the overall structure of the cold pressing assembly in the embodiment of the present application.

[0040] Figure 4 It is a schematic diagram of the overall structure of the limiting device in the embodiment of the present application.

[0041] Figure 5 It is an exploded view of the limiting device in the embodiment of the present application, mainly showing the limiting components.

[0042] Figure 6 It is a schematic diagram of the overall structure of the positioning device in the embodiment of the present application.

[0043] Figure 7 It is an exploded view of the positioning device in the embodiment of the present application, mainly showing the positioning components.

[0044] Explanation of the accompanying symbols: 1. housing; 11. mounting cavity; 2. water inlet baffle; 3. water outlet baffle; 4. water inlet flow pipe; 5. water outlet flow pipe; 6. positioning device; 61. positioning seat; 611. positioning cavity; 62. positioning assembly; 621. positioning screw; 622. positioning nut; 63. positioning baffle; 631. positioning groove; 632. fixing hole; 7. water inlet flange; 71. threaded hole; 8. limiting device; 81. limiting seat; 811. limiting cavity; 82. limiting assembly; 821. limiting ring; 82 11. Limiting surface; 822. Limiting screw; 823. Limiting nut; 824. Limiting baffle; 8241. Limiting hole; 9. Cold pressing assembly; 91. Upper module; 92. Lower module; 921. Positioning hole; 922. Cavity; 923. Stripping chute; 10. Water outlet flange; 12. Fixing part; 13. Positioning rod; 14. Stripping assembly; 141. Stripping seat; 1411. Sliding space; 142. Stripping plate; 1421. Sliding hole; 143. Stripping rod; 144. Elastic part; 15. Guide rod. DETAILED DESCRIPTION

[0045] The following is combined with Figure 1-7 This application is described in further detail.

[0046] The embodiment of the present application discloses a water meter housing. Figure 1A water meter case includes a housing 1, a water inlet baffle 2, a water outlet baffle 3, a water inlet flow tube 4, and a water outlet flow tube 5. In the embodiment of the present application, the housing 1 is an arc-shaped plate. The water outlet baffle 3 and the water inlet baffle 2 are welded and fixed at both ends of the housing 1 in the axial direction. A mounting cavity 11 for mounting the water meter movement is formed between the water outlet baffle 3, the water inlet baffle 2, and the housing 1. A fixing member 12 is welded and fixed on the housing 1. The fixing member 12 is used to fix the water meter movement. In the embodiment of the present application, the fixing member 12 is a square plate. The water inlet flow tube 4 is coaxially welded and fixed to the water inlet baffle 2, and the water outlet flow tube 5 is coaxially welded and fixed to the water outlet baffle 3. The inner cavity of the water inlet flow tube 4, the mounting cavity 11, and the inner cavity of the water outlet flow tube 5 are connected in sequence. An inlet flange 7 is coaxially welded and fixed to the water inlet flow tube 4, and an outlet flange 10 is coaxially welded and fixed to the water outlet flow tube 5. The inner cavity of the water inlet flow tube 4, the mounting cavity 11, and the inner cavity of the water outlet flow tube 5 are connected in sequence. The water inlet flange 7 and the water outlet flange 10 are evenly spaced apart with a plurality of threaded holes 71 for tightening and fixing with bolts.

[0047] The implementation principle of a water meter case in an embodiment of the present application is as follows: the case 1, the water inlet baffle 2, the water outlet baffle 3, the fixing part 12, the water inlet flange 7, the water outlet flange 10, the water inlet flow pipe 4 and the water outlet flow pipe 5 can be produced independently respectively. The water inlet baffle 2 and the water outlet baffle 3 are first welded and fixed on both sides of the case 1, one end of the water inlet flow pipe 4 is welded and fixed on the water inlet baffle 2, and the other end of the water inlet flow pipe 4 is coaxially welded and fixed on the water inlet flange 7, one end of the water outlet flow pipe 5 is welded and fixed on the water outlet baffle 3, and the other end of the water outlet flow pipe 5 is coaxially welded and fixed on the water outlet flange 10, the inner cavity of the water inlet flow pipe 4, the installation cavity 11 and the inner cavity of the water outlet flow pipe 5 are connected in sequence, so as to realize the welding forming of the water meter case, and no mold casting is required for one-piece forming, thereby improving the yield of the water meter case and reducing the production cost of the water meter case.

[0048] The present application also discloses a water meter housing processing fixture. Figure 2 A water meter case processing fixture includes a cold pressing assembly 9, which is used to cold press a blank plate into a housing 1. The cold pressing assembly 9 includes an upper module 91 and a lower module 92. The upper module 91 is slidably connected to the lower module 92. A positioning rod 13 is fixed to the upper module 91, and a positioning hole 921 is provided on the lower module 92 for the positioning rod 13 to slide. The axis of the positioning rod 13 and the sliding direction of the upper module 91 are parallel to each other. When the upper module 91 slides toward the lower module 92, the positioning rod 13 is slidably connected to the inner wall of the positioning hole 921 and is not easily offset, thereby improving the stability of the upper module 91 sliding on the lower module 92.

[0049] Reference Figure 2When the upper module 91 and the lower module 92 are closed, a cavity 922 for molding the shell 1 is formed. When the blank plate is placed between the upper module 91 and the lower module 92, the upper module 91 slides toward the lower module 92, and the upper module 91 squeezes the blank plate and drives the blank plate to deform toward the lower module 92 to form the shell 1. At the same time, the upper module 91 and the lower module 92 are closed and the shell 1 is located in the cavity 922.

[0050] Reference Figure 2 The lower module 92 is connected to a stripping assembly 14 , which is used to separate the shell 1 from the cavity 922 . The stripping assembly 14 includes a stripping seat 141, a stripping plate 142, a stripping rod 143 and an elastic member 144. The stripping seat 141 is fixed on the side of the lower module 92 away from the upper module 91. The end face of the stripping seat 141 facing the lower module 92 is provided with a sliding space 1411 for the stripping plate 142 to slide. The sliding direction of the stripping plate 142 and the sliding direction of the upper module 91 are parallel to each other. A guide rod 15 is connected to the stripping seat 141. In the embodiment of the present application, there are multiple guide rods 15. One end of the multiple guide rods 15 is welded and fixed on the inner wall of the sliding space 1411 at intervals, and the other end of the multiple guide rods 15 is welded and fixed on the lower module 92 at intervals. The axis of the guide rod 15 and the sliding direction of the stripping plate 142 are parallel to each other. The stripping plate 142 is provided with multiple sliding holes 1421 for the guide rod 15 to slide.

[0051] Reference Figure 2 and Figure 3 The stripper rod 143 is welded and fixed to the end surface of the stripper plate 142 facing the lower module 92. The lower module 92 is provided with a stripper groove 923 for the stripper rod 143 to slide. The stripper groove 923 is connected to the cavity 922, and the end of the stripper rod 143 can abut the shell 1. The elastic member 144 can be a compression spring or a torsion spring. In the embodiment of the present application, the elastic member 144 is a compression spring. In the embodiment of the present application, there are multiple elastic members 144, and the elastic members 144 correspond to the guide rod 15 one by one. The elastic member 144 is coaxially sleeved on the guide rod 15. One end of the elastic member 144 in the elastic direction is fixed to the stripper plate 142, and the other end of the elastic member 144 in the elastic direction is fixed to the inner wall of the sliding space 1411. The elastic member 144 has the elastic force to drive the stripper plate 142 to slide in the direction close to the lower module 92, and the end of the stripper rod 143 passes through the stripper groove 923 and is located in the cavity 922 and abuts the shell 1.

[0052] Reference Figure 2 and Figure 3When the upper module 91 and the lower module 92 are closed and the blank plate is driven to punch out the shell 1, the lower module 92 slides away from the lower module 92, and the clamping force of the upper module 91 on the shell 1 disappears. The elastic member 144 drives the stripper plate 142 to slide toward the lower module 92. The end of the stripper rod 143 is provided with a stripper groove 923 located in the cavity 922 and abuts against the shell 1. The stripper rod 143 drives the shell 1 to separate from the lower module 92, thereby realizing automatic stripping of the shell 1.

[0053] Reference Figure 4 and Figure 5 A water meter case processing fixture further includes a limiting device 8, which is used to limit the fixing member 12, the water inlet baffle 2, and the water outlet baffle 3 on the housing 1. The limiting device 8 includes a limiting seat 81 and a limiting assembly 82. The limiting seat 81 defines a limiting cavity 811 for accommodating the housing 1. The limiting assembly 82 is used to limit the water outlet baffle 3, the water inlet baffle 2, and the fixing member 12 on the housing 1. The limiting assembly 82 includes a limiting ring 821, a limiting screw 822, a limiting nut 823 and two limiting baffles 824. The limiting ring 821 can be embedded in the shell 1. The outer wall of the limiting ring 821 abuts the inner arc surface of the shell 1 to form a limit. The limiting ring 821 has a limiting surface 8211 for placing the fixing part 12. The limiting surface 8211 is flush with the shell 1. The limiting surface 8211 is used for placing the fixing part 12, and the welding seam of the fixing part 12 abuts the welding seam of the shell 1, so that the fixing part 12 is not easily offset on the shell 1, thereby improving the welding accuracy of the fixing part 12 on the shell 1.

[0054] Reference Figure 5 The limiting baffle 824 is provided with a limiting hole 8241 for the limiting screw 822 to pass through. When the water inlet baffle 2 and the water outlet baffle 3 abut the two ends of the axial direction of the shell 1, the two limiting baffles 824 correspond one to one against the end faces of the water inlet baffle 2 and the water outlet baffle 3 that are away from each other. One end of the limiting screw 822 passes through the limiting holes 8241 on the two limiting baffles 824 and is threadedly connected to the limiting nut 823. The two limiting baffles 824 plate surfaces correspond one to one to the plate surfaces of the water inlet baffle 2 and the water outlet baffle 3. The water outlet baffle 3 and the water inlet baffle 2 are limited to both sides of the axial direction of the shell 1. The water outlet baffle 3 and the water inlet baffle 2 are not easy to deviate on the shell 1, thereby improving the welding accuracy of the water outlet baffle 3 and the water inlet baffle 2 on the shell 1.

[0055] Reference Figure 6 and Figure 7A water meter case machining fixture also includes a positioning device 6, which is used to coaxially position the inlet flow tube 4 and the outlet flow tube 5 on the inlet baffle 2 and the outlet baffle 3 in a one-to-one correspondence. The positioning device 6 includes a positioning seat 61, a positioning assembly 62, and two positioning baffles 63. The positioning seat 61 defines a positioning cavity 611 for accommodating the housing 1. The positioning baffle 63 defines a positioning groove 631 for accommodating the end of the inlet flow tube 4 or the end of the outlet flow tube 5. The positioning assembly 62 includes a plurality of positioning screws 621 and a plurality of positioning nuts 622. The positioning screws 621 and the positioning nuts 622 correspond to each other in a one-to-one manner and are screwed together. The number of the positioning screw 621 and the positioning nut 622 can be one, two or three. In the embodiment of the present application, the number of the positioning screw 621 and the positioning nut 622 is two. A plurality of fixing holes 632 for the positioning screw 621 to pass through are opened on the inner wall of the positioning groove 631. When the shell 1 is placed in the positioning cavity 611, one end of the water inlet flow tube 4 coaxially abuts the surface of the water inlet baffle 2, and the other end of the water inlet flow tube 4 is embedded in one of the positioning grooves 631. One end of the water outlet flow tube 5 coaxially abuts the surface of the water outlet baffle 3. The water outlet flow The other end of the tube 5 is embedded in another positioning groove 631, and the two positioning baffles 63 are located one-to-one on the side where the water outlet flow tube 5 and the water inlet flow tube 4 are away from each other. The end of the screw passes through the fixing holes 632 on the two positioning baffles 63 and is threaded and fixed on the positioning nut 622, so that the water inlet flow tube 4 and the water outlet flow tube 5 are limited one-to-one on the water inlet baffle 2 and the water outlet baffle 3, so that the water outlet flow tube 5 and the water inlet flow tube 4 are stably welded and fixed one-to-one on the water outlet baffle 3 and the water inlet baffle 2, thereby improving the processing quality of the water meter case.

[0056] The implementation principle of a water meter case processing fixture in an embodiment of the present application is: the upper module 91 and the lower module 92 are molded together and drive the blank plate to punch out the shell 1, the lower module 92 slides in the direction away from the lower module 92, the clamping force of the upper module 91 on the shell 1 disappears, and the elastic member 144 drives the stripping plate 142 to slide in the direction close to the lower module 92, and the end of the stripping rod 143 is provided with a stripping groove 923 located in the cavity 922 and abuts against the shell 1, and the stripping rod 143 drives the shell 1 to separate from the lower module 92, thereby realizing automatic stripping of the shell 1.

[0057] The shell 1 is placed in the limiting cavity 811, the limiting ring 821 is embedded in the shell 1, the limiting surface 8211 is flush with the shell 1, and the fixing part 12 is placed on the limiting surface 8211 to fix the fixing part 12 on the shell 1, so that the fixing part 12 is not easily offset when it is welded to the shell 1. When the welding of the fixing part 12 is completed, the limiting ring 821 is separated from the shell 1, and the water inlet baffle 2 and the water outlet baffle 3 abut the two ends of the shell 1 in the axial direction, and the two limiting baffles 824 abut the water inlet baffle 2 one by one. The end faces of the water outlet baffle 3 are away from each other, and one end of the limiting screw 822 passes through the limiting holes 8241 on the two limiting baffles 824 and is threadedly connected to the limiting nut 823. The two limiting baffles 824 are pressed against the water inlet baffle 2 and the water outlet baffle 3 respectively. The water outlet baffle 3 and the water inlet baffle 2 are limited on both sides of the axial direction of the shell 1. The water outlet baffle 3 and the water inlet baffle 2 are not easy to deviate on the shell 1, thereby improving the welding accuracy of the water outlet baffle 3 and the water inlet baffle 2 on the shell 1.

[0058] Finally, when the shell 1 is placed in the positioning cavity 611, one end of the water inlet flow tube 4 coaxially abuts the surface of the water inlet baffle 2, and the other end of the water inlet flow tube 4 is embedded in one of the positioning grooves 631, and one end of the water outlet flow tube 5 coaxially abuts the surface of the water outlet baffle 3, and the other end of the water outlet flow tube 5 is embedded in the other positioning groove 631. The two positioning baffles 63 are located one-to-one on the side where the water outlet flow tube 5 and the water inlet flow tube 4 are away from each other. The end of the screw is penetrated by the fixing holes 632 on the two positioning baffles 63 and is threaded and fixed on the positioning nut 622, so that the water inlet flow tube 4 and the water outlet flow tube 5 are limited one-to-one on the water inlet baffle 2 and the water outlet baffle 3, so that the water outlet flow tube 5 and the water inlet flow tube 4 are stably welded and fixed one-to-one on the water outlet baffle 3 and the water inlet baffle 2, thereby improving the finished product rate of the water meter shell and reducing the production cost of the water meter shell.

[0059] The present application also discloses a water meter housing processing process, comprising the following steps:

[0060] Blank plate cutting: the stainless steel pipe is cut by a laser cutting machine to cut out the entire blank plate material required for the stretch forming of the shell 1;

[0061] The shell 1 is formed by placing the blank plate material on the cold pressing assembly 9. When the upper mold 91 and the lower mold 92 are closed, the blank plate is located in the cavity 922 and cold pressed to form the shell 1;

[0062] Cut the water outlet baffle 3 and the water inlet baffle 2, and cut the blank plate into pieces according to the size using a laser cutting machine;

[0063] The fixing part 12 is formed. The raw material of the fixing part 12 is cut into shape by a large laser cutting machine, and processed by a CNC lathe in the processing center according to the size, and the screw thread is worked;

[0064] The fixing member 12, the water inlet baffle 2, and the water outlet baffle 3 are welded and fixed to the housing 1. The housing 1 is placed in the limiting cavity 811. The fixing member 12, the water inlet baffle 2, and the water outlet baffle 3 are limited on the housing 1 by the limiting assembly 82. After the power and program of the laser welding equipment are adjusted, the connection parts to be welded are fully welded and fixed;

[0065] The inlet flow pipe 4 and the outlet flow pipe 5 are welded and placed on both sides of the housing 1. The two positioning baffles 63 correspond to the inlet flow pipe 4 and the outlet flow pipe 5 one-to-one. The inlet flow pipe 4 and the outlet flow pipe 5 are embedded in the positioning cavity 611 one-to-one. The positioning assembly 62 firmly fixes the two positioning baffles 63 on the housing 1. The inlet flow pipe 4 and the outlet flow pipe 5 are coaxially limited on the inlet baffle 2 and the outlet baffle 3 one-to-one. The laser welding equipment welds the weld at a 45° angle.

[0066] Processing of the water inlet flange 7 and the water outlet flange 10: Use a CNC lathe to process the inner holes of the water inlet flange 7 and the water outlet flange 10 to the dimensions corresponding to the inlet flow pipe 4 and the outlet flow pipe 5;

[0067] The water meter shell is processed, and the processed water inlet flange 7 and water outlet flange 10 are respectively connected to the water inlet flow pipe 4 and the water outlet flow pipe 5, and the laser cutting machine is used to fully weld the welding seam to fix it.

[0068] The implementation principle of a water meter case processing process in an embodiment of the present application is: the shell 1, water inlet baffle 2, water outlet baffle 3, fixing part 12, water inlet flange 7, water outlet flange 10, water inlet flow pipe 4 and water outlet flow pipe 5 can be independently produced respectively, the water inlet baffle 2 and the water outlet baffle 3 are first welded and fixed on both sides of the shell 1, the water inlet flow pipe 4 is welded and fixed on the water inlet baffle 2, the water outlet flow pipe 5 is welded and fixed on the water outlet baffle 3, the water inlet flange 7 is coaxially welded and fixed on the water inlet flow pipe 4, and the water outlet flange 10 is coaxially welded and fixed on the water outlet flow pipe 5, so that the components of the water meter case are welded and formed in sequence, and there is no need for mold casting for one-piece forming, thereby improving the finished product rate of the water meter case and reducing the production cost of the water meter case.

[0069] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A water meter case processing fixture for processing a water meter case, the water meter case comprising a case (1), a water inlet baffle (2), a water outlet baffle (3), a water inlet flow pipe (4) and a water outlet flow pipe (5), the water inlet baffle (2) and the water outlet baffle (3) being welded and fixed on both sides of the case (1), a mounting cavity (11) for mounting a water meter movement being formed between the case (1), the water inlet baffle (2) and the water outlet baffle (3), the water inlet flow pipe (4) being welded and fixed on the water inlet baffle (2 ), the outlet flow pipe (5) is welded and fixed on the outlet baffle (3), and the inner cavity of the water inlet flow pipe (4), the installation cavity (11) and the inner cavity of the water outlet flow pipe (5) are sequentially connected; a fixing member (12) is welded and fixed on the housing (1), and the fixing member (12) can fix the water meter movement; the water inlet flow pipe (4) is coaxially welded and fixed with an inlet flange (7), and the water outlet flow pipe (5) is coaxially welded and fixed with an outlet flange (10); the characteristics are: The invention comprises a cold pressing component (9), a limiting device (8) and a positioning device (6), wherein the cold pressing component (9) comprises an upper module (91) and a lower module (92), wherein the upper module (91) and the lower module (92) form a cavity (922) for forming a shell (1), and the limiting device (8) comprises a limiting seat (81) and a limiting component (82), wherein the limiting seat (81) is provided with a limiting cavity (811) for accommodating the shell (1), and the limiting component (82) is connected to the limiting seat (81), and the limiting component (82) is used to limit the fixing part (12), the water inlet baffle (2) and the water outlet baffle (3) on the shell (1). (6) includes a positioning assembly (62) and two positioning baffles (63), wherein the positioning baffle (63) is provided with a positioning groove (631) for accommodating the water inlet flow pipe (4) or the water outlet flow pipe (5), and the positioning assembly (62) is used to tightly fix the two positioning baffles (63) on the housing (1), and the water inlet flow pipe (4) and the water outlet flow pipe (5) are coaxially limited on the water inlet baffle (2) and the water outlet baffle (3) in a one-to-one correspondence; the limiting assembly (82) includes a limiting ring (821), a limiting screw (822), a limiting nut (823) and two limiting baffles (824), wherein the limiting baffle (824) is provided with a positioning groove for the limiting screw (822). The limiting hole (8241) is provided, one of the limiting baffles (824) is used to abut against the water inlet baffle (2), and the other limiting baffle (824) is used to abut against the water outlet baffle (3); the limiting ring (821) can be embedded in the shell (1); the outer wall of the limiting ring (821) abuts against the inner arc surface of the shell (1) to form a limit; the limiting ring (821) has a limiting surface (8211) for placing the fixing member (12); when the shell (1) is embedded in the limiting cavity (811), the limiting ring (821) is embedded in the shell (1), the limiting surface (8211) is flush with the shell (1), and the fixing member (12) is placed on the limiting surface (8211). 1), the fixing member (12) is limited on the shell (1), and the welding seam of the fixing member (12) abuts the welding seam of the shell (1), the water inlet baffle (2) and the water outlet baffle (3) are placed on both sides of the shell (1), the two limiting baffles (824) abut the water inlet baffle (2) and the water outlet baffle (3) in a one-to-one correspondence, one end of the limiting screw (822) is penetrated by the limiting holes (8241) on the two limiting baffles (824) and is threadedly fixed on the limiting nut (823), the plate surfaces of the two limiting baffles (824) abut the plate surfaces of the water inlet baffle (2) and the water outlet baffle (3) in a one-to-one correspondence, and the water inlet baffle (2) and the water outlet baffle (3) are limited on both sides of the shell (1).

2. The water meter case processing fixture according to claim 1, characterized in that: The upper module (91) is slidably connected to the lower module (92). When the blank plate is placed between the upper module (91) and the lower module (92), the upper module (91) slides toward the lower module (92). The upper module (91) squeezes the blank plate and drives the blank plate to deform toward the lower module (92) to form a shell (1). The upper mold and the lower mold are closed and the shell (1) is located in the cavity (922). The upper module (91) is connected to a positioning rod (13). The lower module (92) is provided with a positioning hole (921) for the positioning rod (13) to slide. When the upper module (91) and the lower module (92) are closed, the positioning rod (13) is slidably connected to the inner wall of the positioning hole (921).

3. The water meter case processing fixture according to claim 2, characterized in that: The lower module (92) is connected to a stripping assembly (14), and the stripping assembly (14) includes a stripping seat (141), a stripping plate (142), a stripping rod (143) and an elastic member (144). The stripping seat (141) is connected to the side of the lower module (92) away from the upper module (91). The stripping seat (141) is provided with a sliding space (1411) for the stripping plate (142) to slide. The sliding direction of the stripping plate (142) and the sliding direction of the upper module (91) are parallel to each other. The stripping rod (143) is connected to the stripping plate (142) toward the lower module. On one side of (92), the lower module (92) is provided with a stripping groove (923) for the stripping rod (143) to pass through, the stripping groove (923) is connected to the mold cavity (922), the end of the stripping rod (143) can abut the shell (1), one end of the elastic member (144) in the elastic direction is connected to the inner wall of the sliding space (1411), and the other end of the elastic member (144) in the elastic direction is connected to the stripping plate (142), and the elastic member (144) has the tendency of elastic force driving the end of the stripping rod (143) to pass through the stripping groove (923) and be located in the mold cavity (922).

4. The water meter case processing fixture according to claim 3, characterized in that: The stripping seat (141) is connected to a guide rod (15), one end of the guide rod (15) is connected to the sliding space (1411), and the other end of the guide rod (15) is connected to the lower module (92). The axis of the guide rod (15) and the sliding direction of the stripping plate (142) are parallel to each other, and the stripping plate (142) is provided with a sliding hole (1421) for the guide rod (15) to slide.

5. The water meter case processing fixture according to claim 1, characterized in that: The positioning device (6) further comprises a positioning seat (61), the positioning seat (61) is provided with a positioning cavity (611) for accommodating the housing (1), the positioning assembly (62) comprises a plurality of positioning screws (621) and a plurality of positioning nuts (622), the positioning screws (621) and the positioning nuts (622) are in one-to-one correspondence and are threadedly connected, the positioning baffles (63) are provided with positioning grooves (631) for accommodating the inlet flow pipe (4) or the outlet flow pipe (5), the positioning grooves (631) are connected to the positioning cavity (611), and the inner wall of the positioning grooves (631) is provided with a plurality of fixing holes (632) for the positioning screws (621) to pass through. When the housing (1) is placed in the positioning cavity (611), one end of the water inlet flow pipe (4) abuts against the water inlet baffle (2), and the other end of the water inlet flow pipe (4) is embedded in one of the positioning grooves (631); one end of the water outlet flow pipe (5) abuts against the water outlet baffle (3), and the other end of the water outlet flow pipe (5) is embedded in another positioning groove (631); the end of the positioning screw (621) is provided with a fixing hole (632) and is threadedly fixed on the positioning nut (622); the two positioning baffles (63) abut against the housing (1) to form a fixed position; the water outlet flow pipe (5) is limited to the water outlet baffle (3), and the water inlet flow pipe (4) is limited to the water outlet baffle (3).

6. A water meter shell processing process, characterized by: The following steps are involved: The shell (1) is formed by placing a blank plate material in a cold pressing assembly (9) placed in a water meter shell processing fixture as described in any one of claims 1 to 5. When the upper module (91) and the lower module (92) are closed, the blank plate is located in the mold cavity (922) and cold pressed to form the shell (1); The fixing member (12), the water inlet baffle (2), and the water outlet baffle (3) are welded and fixed to the housing (1), the housing (1) is placed in the limiting cavity (811), the fixing member (12), the water inlet baffle (2), and the water outlet baffle (3) are limited on the housing (1) by the limiting assembly (82), and the laser welding equipment is adjusted for power and program to fully weld and fix the connection parts to be welded; The water inlet flow pipe (4) and the water outlet flow pipe (5) are welded, and the water inlet flow pipe (4) and the water outlet flow pipe (5) are placed on both sides of the housing (1). The two positioning baffles (63) correspond to the water inlet flow pipe (4) and the water outlet flow pipe (5) one-to-one. The water inlet flow pipe (4) and the water outlet flow pipe (5) are embedded in the positioning cavity (611) one-to-one. The positioning assembly (62) tightly fixes the two positioning baffles (63) on the housing (1). The water inlet flow pipe (4) and the water outlet flow pipe (5) are coaxially limited on the water inlet baffle (2) and the water outlet baffle (3) one-to-one. The laser welding equipment welds the weld seam at a 45° angle. The water meter shell is processed, and the water inlet flange (7) and the water outlet flange (10) are respectively connected to the water inlet flow pipe (4) and the water outlet flow pipe (5), and the laser cutting machine is used to fully weld the welding seam to fix it.

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