Coriolis flowmeter shell assembly positioning spot welding tool

Abstract

The utility model relates to a Coriolis flowmeter shell assembly positioning spot welding tool, and relates to the field of welding tools, a plurality of measuring tube positioning assemblies, a plurality of coil support positioning assemblies and a main body supporting assembly are all connected with a base in a sliding mode, and the measuring tube positioning assemblies and the coil support positioning assemblies are arranged in a one-to-one correspondence mode. The main body supporting assembly is located on one side of the measuring tube positioning assembly and the coil support positioning assembly. The tool has the advantages that the measuring tube, the coil support and the main body of the flowmeter are all clamped on the tool at a time and welded, and large assembly errors caused by secondary clamping are avoided. The tool can adapt to flowmeters of different specifications, interchangeability is high, compatibility is good, and the tool manufacturing cost is reduced. For flowmeters of the same model, the flowmeter can be directly clamped only by installing the measuring tube positioning assembly, the coil support positioning assembly and the main body supporting assembly once, errors caused by the fact that the positions of the positioning assemblies need to be measured and adjusted during clamping each time are avoided, the welding positioning precision is high, and the welding efficiency is high.

Description

Technical Field

[0001] The utility model relates to the field of welding tools, in particular to a positioning spot welding tool for a Coriolis flowmeter housing component. Background Art

[0002] Coriolis mass flowmeter (referred to as Coriolis flowmeter) is a kind of instrument that directly measures mass flow rate by using the principle that the fluid flows in a vibrating tube to generate a Coriolis force proportional to the mass flow rate. There are many forms of Coriolis flowmeter structure, generally composed of a vibrating tube (measuring tube) and a converter (coil + magnet). The vibrating tube (measuring tube) is a sensitive device, and there are several shapes such as U-shaped, Ω-shaped, △-shaped, annular, straight tube and spiral, but the basic principle is the same.

[0003] The measuring tube assembly, which is composed of the measuring tube, coil bracket and fixing block, is the core component. The positioning and welding accuracy of the measuring tube assembly has a great influence on the performance of the flow meter, and tooling production can greatly improve the positioning accuracy of the assembly.

[0004] The existing Coriolis flowmeter measuring tube assembly (i.e., vibration assembly parts positioning spot welding) tooling can be summarized as follows: 1) Customize and process each part of the tooling, and then assemble them together; 2) Place the measuring tube and additional parts into the tooling, gradually fix the measuring tube assembly, and then spot weld; 3) After spot welding, remove the tooling fasteners, remove the measuring tube assembly, and complete the spot welding. In the existing tooling, important positioning parts such as coils usually need to be disassembled and assembled repeatedly each time welding; the existing tooling is mostly adapted to the flowmeter model, and has poor compatibility with flowmeters of other calibers. Each model of flowmeter needs to be made separately with a complete set of corresponding tooling; and the existing tooling is usually only used to position and weld the measuring tube. After the welding is completed, the measuring tube is not fixed and needs to be assembled and welded with the main body of the flowmeter again. The measuring tube is easily deformed after the second installation with the main body, resulting in assembly errors. Utility Model Content

[0005] The technical problem to be solved by the utility model is how to facilitate welding of a shell component of a Coriolis flowmeter.

[0006] The utility model provides a technical solution to the above-mentioned technical problems as follows: a Coriolis flowmeter housing assembly positioning spot welding tool, comprising a base, a measuring tube positioning assembly, a coil bracket positioning assembly and a main body support assembly, wherein the measuring tube positioning assembly, the coil bracket positioning assembly and the main body support assembly are all slidably connected to the base, and there are multiple measuring tube positioning assemblies and coil bracket positioning assemblies, which are arranged one by one, and the main body support assembly is located on one side of the measuring tube positioning assembly and the coil bracket positioning assembly.

[0007] The beneficial effects of the utility model are as follows: the measuring tube positioning assembly is used to support the measuring tube of the fixed flowmeter, the coil bracket positioning assembly is used to support the coil bracket of the fixed flowmeter, and the main body support assembly is used to support the main body of the fixed flowmeter. The measuring tube, coil bracket and main body of the flowmeter are clamped to the tooling at one time and welded, avoiding large assembly errors caused by secondary clamping. The measuring tube positioning assembly, the coil bracket positioning assembly and the main body support assembly can be adjusted along the base for sliding, so as to adapt to flowmeters of different specifications, with high interchangeability and good compatibility, and reducing the tooling manufacturing cost. When the tooling of the utility model is used to clamp the Coriolis flowmeter, for the same model of flowmeter, it is only necessary to install the measuring tube positioning assembly, the coil bracket positioning assembly and the main body support assembly once, without repeatedly disassembling and assembling the positioning assembly. When welding the next flowmeter, it can be clamped directly, avoiding the error caused by measuring and adjusting the position of the positioning assembly each time the clamping is performed, and the welding positioning accuracy is high and the welding efficiency is high.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, it also includes a transverse drive assembly and a longitudinal drive assembly, both of which are connected to the base, the transverse drive assembly is perpendicular to the longitudinal drive assembly, and there are three measuring tube positioning assemblies, two of which are transmission-connected to the transverse drive assembly, and the other is transmission-connected to the longitudinal drive assembly, and the longitudinal drive assembly and the main body support assembly are respectively located on both sides of the transverse drive assembly.

[0010] The beneficial effect of adopting the above further solution is: two of the measuring tube positioning assemblies are driven to move by the transverse driving assembly, and the other measuring tube positioning assembly is driven to move by the longitudinal driving assembly. Thus, the position of the measuring tube positioning assembly can be adjusted to be suitable for flow meters of different models.

[0011] Furthermore, it also includes a transverse guide rail for the measuring tube, and the transverse drive assembly includes a transverse screw rod. The transverse guide rail for the measuring tube is fixedly connected to the base, wherein two of the measuring tube positioning assemblies are arranged at intervals and are slidingly connected to the transverse guide rail for the measuring tube, and the transverse screw rod is rotatably installed on the base, and the two ends of the transverse screw rod respectively have a transverse first thread segment and a transverse second thread segment with opposite spiral directions, wherein the two measuring tube positioning assemblies are threadedly connected to the first transverse thread segment and the second transverse thread segment respectively.

[0012] The beneficial effect of adopting the above further scheme is that the two measuring tube positioning assemblies are slidably matched and guided with the measuring tube transverse guide rail, and the transverse screw drives the two measuring tube positioning assemblies to move synchronously in the opposite direction or in the opposite direction through the transverse first thread segment and the transverse second thread segment. The use of the screw guide rail drive has strong reusability and high consistency.

[0013] Furthermore, it also includes a longitudinal guide rail for the measuring tube, the longitudinal drive assembly includes a longitudinal screw rod, the longitudinal guide rail for the measuring tube is fixedly connected to the base, another measuring tube positioning assembly is slidably connected to the longitudinal guide rail for the measuring tube, the longitudinal screw rod is rotatably installed on the base, and the longitudinal screw rod is threadedly connected to another measuring tube positioning assembly.

[0014] The beneficial effect of adopting the above further solution is that the other measuring tube positioning assembly is slidably matched with and guided by the longitudinal guide rail of the measuring tube, and the rotation of the longitudinal screw drives the measuring tube positioning assembly to move.

[0015] Furthermore, the measuring tube positioning assembly includes a measuring tube guide rail seat, a measuring tube screw nut, a measuring tube positioning base, a measuring tube positioning block and a measuring tube pressure block. The measuring tube guide rail seat and the measuring tube screw nut are fixedly connected to the bottom surface of the measuring tube positioning base, the measuring tube positioning block is fixedly connected to the top surface of the measuring tube positioning base, the measuring tube pressure block is detachably connected to the measuring tube positioning block, the measuring tube pressure block and the measuring tube positioning block have measuring tube clamping grooves on the sides facing each other, the measuring tube guide rail seat is slidably connected to the base, and the measuring tube screw nut is transmission-connected to the corresponding transverse drive assembly or the longitudinal drive assembly.

[0016] The beneficial effects of adopting the above further scheme are: the measuring tube guide rail seat slides with the corresponding measuring tube transverse guide rail or measuring tube longitudinal guide rail, the measuring tube lead screw nut is threadedly transmitted with the corresponding transverse screw rod or longitudinal screw rod, and the measuring tube positioning block and the measuring tube positioning block clamp and position the measuring tube through the measuring tube clamping groove.

[0017] Furthermore, the measuring tube positioning assembly comprises at least two measuring tube pressing blocks, and the at least two measuring tube pressing blocks are arranged at intervals.

[0018] The beneficial effect of adopting the above further solution is that the measuring tube is clamped with at least two measuring tube pressing blocks spaced apart from each other, and the clamping stability of the measuring tube is high.

[0019] Furthermore, two measuring tube clamping grooves are provided at intervals in the upper and lower directions on the sides facing each other of the measuring tube pressing block and the measuring tube positioning block, and the measuring tube clamping grooves are semicircular grooves.

[0020] The beneficial effect of adopting the above further solution is that the two measuring tube clamping grooves spaced apart from each other can clamp two parallel measuring tubes at the same time.

[0021] Furthermore, it also includes a coil longitudinal guide rail and a coil transverse guide rail. The coil longitudinal guide rail is fixedly connected to the measuring tube positioning base of another measuring tube positioning assembly and is parallel to the longitudinal drive assembly. The coil transverse guide rail is fixedly connected to the base and is parallel to the transverse drive assembly. There are three coil support positioning assemblies, two of which are slidably connected to the coil transverse guide rail, and the other coil support positioning assembly is slidably connected to the coil longitudinal guide rail.

[0022] The beneficial effect of adopting the above further scheme is that the coil longitudinal guide rail and the coil transverse guide rail respectively guide the coil support positioning assembly at the corresponding position, and the coil longitudinal guide rail moves with the corresponding measuring tube positioning base to avoid interference with the movement of the measuring tube positioning base.

[0023] Furthermore, the coil support positioning assembly includes a coil support guide rail seat, a coil support seat, a coil support positioning block and a coil support bolt assembly; the coil support guide rail seat is slidably connected to the corresponding coil longitudinal guide rail or the coil transverse guide rail; the coil support seat is fixedly connected to the top surface of the coil support guide rail seat; the coil support positioning block is fixedly connected to the top surface of the coil support seat; and the middle portion of the coil support bolt assembly is passed through the upper end of the coil support positioning block.

[0024] The beneficial effect of adopting the above further scheme is that the coil support rail seat slides with the corresponding coil longitudinal rail or coil transverse rail, the coil support seat supports the coil support positioning block, and the coil support bolt assembly fixes the coil support on the coil support positioning block.

[0025] Furthermore, the main body support assembly includes a main body guide rail seat, a main body support seat and a main body support frame. The main body guide rail seat is slidably connected to the base, the main body support seat is fixedly connected to the top surface of the main body guide rail seat, the main body support seat is rotatably connected with a main body locking nut, the main body support frame is vertically slidably matched with the main body support seat, and is threadedly connected to the main body locking nut.

[0026] The beneficial effect of adopting the above further solution is that the main body guide seat slides along the base, and the position of the main body support assembly on the base can be adjusted to be suitable for various types of flow meters. The main body support frame can vertically adjust the support height relative to the main body support seat and is locked in place by a locking nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1This is a front view of a Coriolis flowmeter housing assembly positioning spot welding tooling for clamping the flowmeter in the utility model;

[0028] Figure 2 for Figure 1 A sectional view of the AA direction of a positioning spot welding tool for a Coriolis flowmeter housing assembly;

[0029] Figure 3 A three-dimensional diagram of a Coriolis flowmeter housing assembly positioning spot welding fixture for clamping the flowmeter according to the utility model;

[0030] Figure 4 for Figure 3 An enlarged view of location B of a Coriolis flowmeter housing assembly positioning spot welding tool;

[0031] Figure 5 This is a front view of a positioning spot welding tool for a Coriolis flowmeter housing assembly according to the utility model;

[0032] Figure 6 A three-dimensional diagram of a positioning spot welding tool for a Coriolis flowmeter housing assembly according to the utility model;

[0033] Figure 7 It is a three-dimensional diagram of the first measuring tube positioning assembly of the utility model;

[0034] Figure 8 It is a three-dimensional diagram of the second measuring tube positioning assembly of the utility model;

[0035] Fig. 9 It is a three-dimensional diagram of the coil support positioning assembly of the utility model.

[0036] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0037] 1. Base;

[0038] 2. Measuring tube positioning assembly; 21. Measuring tube guide seat; 22. Measuring tube lead screw nut; 23. Measuring tube positioning base; 24. Measuring tube positioning block; 25. Measuring tube pressure block;

[0039] 3. Coil support positioning assembly; 31. Coil support guide seat; 32. Coil support seat; 33. Coil support positioning block; 34. Coil support bolt assembly;

[0040] 4. Main body support assembly; 41. Main body guide rail seat; 42. Main body support seat; 43. Main body support frame;

[0041] 5. Horizontal drive assembly; 51. Horizontal screw rod; 52. Horizontal hand wheel;

[0042] 6. Longitudinal drive assembly; 61. Longitudinal screw rod; 62. Longitudinal hand wheel;

[0043] 7. Coil longitudinal guide rail; 8. Coil transverse guide rail;

[0044] 9. Transverse guide rail for measuring tube; 10. Longitudinal guide rail for measuring tube; 11. Brazing fixing block;

[0045] 100, measuring tube; 200, main body; 300, coil support; 400, fixing block. DETAILED DESCRIPTION

[0046] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0047] like Figure 1-Figure 9 As shown, this embodiment provides a Coriolis flowmeter housing assembly positioning spot welding tool, including a base 1, a measuring tube positioning assembly 2, a coil bracket positioning assembly 3 and a main body support assembly 4, the measuring tube positioning assembly 2, the coil bracket positioning assembly 3 and the main body support assembly 4 are all slidably connected to the base 1, the measuring tube positioning assembly 2 and the coil bracket positioning assembly 3 are both multiple and arranged one by one, and the main body support assembly 4 is located on one side of the measuring tube positioning assembly 2 and the coil bracket positioning assembly 3.

[0048] The measuring tube positioning assembly 2 is used to support the measuring tube 100 of the fixed flowmeter, the coil bracket positioning assembly 3 is used to support the coil bracket 300 of the fixed flowmeter, and the main body support assembly 4 is used to support the main body 200 of the fixed flowmeter. The measuring tube 100, the coil bracket 300 and the main body 200 of the flowmeter are all clamped to the tooling at one time and welded to avoid large assembly errors caused by secondary clamping. The measuring tube positioning assembly 2, the coil bracket positioning assembly 3 and the main body support assembly 4 can be slidably adjusted along the base 1, so as to adapt to flowmeters of different specifications, with high interchangeability and good compatibility, and reduce the tooling manufacturing cost. When the tooling of the utility model is used to clamp the Coriolis flowmeter, for the same model of flowmeter, it is only necessary to install the measuring tube positioning assembly 2, the coil bracket positioning assembly 3 and the main body support assembly 4 once, and there is no need to repeatedly disassemble and assemble the positioning assembly. When welding the next flowmeter, it can be clamped directly, avoiding the error caused by measuring and adjusting the position of the positioning assembly each time the clamping is performed, and the welding positioning accuracy is high and the welding efficiency is high.

[0049] Optionally, the measuring tube positioning assembly 2, the coil support positioning assembly 3 and the main body supporting assembly 4 are each one or more.

[0050] Specifically, the base 1 can be made of tempered steel or a cast iron platform.

[0051] On the basis of any of the above schemes, it also includes a transverse drive component 5 and a longitudinal drive component 6, both of which are connected to the base 1, the transverse drive component 5 is perpendicular to the longitudinal drive component 6, and there are three measuring tube positioning components 2, two of which are transmission connected to the transverse drive component 5, and the other measuring tube positioning component 2 is transmission connected to the longitudinal drive component 6, and the longitudinal drive component 6 and the main body support component 4 are respectively located on both sides of the transverse drive component 5.

[0052] Two of the measuring tube positioning assemblies 2 are driven to move by the transverse driving assembly 5. Another measuring tube positioning assembly 2 is driven to move by the longitudinal driving assembly 6. Thus, the position of the measuring tube positioning assembly 2 can be adjusted to be suitable for flow meters of different models.

[0053] Specifically, the three measuring tube positioning components 2 are specifically two such as Figure 7 The first measuring tube positioning assembly shown and a Figure 8 The second measuring tube positioning assembly shown in the figure. The two first measuring tube positioning assemblies slide along the X-axis direction and are transmission-connected to the transverse driving assembly 5 , and the second measuring tube positioning assembly slides along the Y-axis direction and is transmission-connected to the longitudinal driving assembly 6 .

[0054] On the basis of any of the above schemes, it also includes a measuring tube transverse guide rail 9, the transverse drive assembly 5 includes a transverse screw rod 51, the measuring tube transverse guide rail 9 is fixedly connected to the base 1, wherein the two measuring tube positioning assemblies 2 are arranged at intervals and are slidably connected to the measuring tube transverse guide rail 9, the transverse screw rod 51 is rotatably installed on the base 1, and the two ends of the transverse screw rod 51 respectively have a transverse first thread segment and a transverse second thread segment with opposite spiral directions, wherein the two measuring tube positioning assemblies 2 are threadedly connected to the transverse first thread segment and the transverse second thread segment respectively.

[0055] The two measuring tube positioning components 2 (i.e., the two first measuring tube positioning components) are slidably matched and guided with the measuring tube transverse guide rail 9, and the transverse screw 51 drives the two measuring tube positioning components 2 to move synchronously toward or in the opposite direction through the transverse first thread segment and the transverse second thread segment. The use of screw guide rail drive has strong reusability and high consistency.

[0056] Specifically, there are two measuring tube transverse guide rails 9, both of which are arranged along the X-axis direction, and the transverse screw rod 51 is located between the two measuring tube transverse guide rails 9. Each first measuring tube positioning assembly is slidably connected to the two measuring tube transverse guide rails 9 at the same time, and is threadedly connected to the transverse screw rod 51. The two first measuring tube positioning assemblies are spaced apart along the X-axis direction.

[0057] Specifically, the transverse drive assembly 5 further includes a transverse hand wheel 52, which is fixedly connected to one end of the transverse screw rod 51. Further, the transverse hand wheel 52 can also be plugged and locked with the base 1 through a locking pin to prevent the transverse screw rod 51 from rotating at will.

[0058] Specifically, the transverse screw rod 51 is rotatably mounted on the base 1 via a bearing.

[0059] Alternatively, the transverse drive assembly 5 may also be a linear motor.

[0060] On the basis of any of the above schemes, it also includes a measuring tube longitudinal guide rail 10, the longitudinal drive assembly 6 includes a longitudinal screw rod 61, the measuring tube longitudinal guide rail 10 is fixedly connected to the base 1, the other measuring tube positioning assembly 2 is slidingly connected to the measuring tube longitudinal guide rail 10, the longitudinal screw rod 61 is rotatably installed on the base 1, and the longitudinal screw rod 61 is threadedly connected to the other measuring tube positioning assembly 2.

[0061] The other measuring tube positioning assembly 2 (ie, the second measuring tube positioning assembly) is slidably matched with and guided by the measuring tube longitudinal guide rail 10 , and the rotation of the longitudinal screw rod 61 drives the measuring tube positioning assembly 2 to move.

[0062] Specifically, there are two measuring tube longitudinal guide rails 10, both of which are arranged along the Y-axis direction. The longitudinal screw rod 61 is located between the two measuring tube longitudinal guide rails 10, and the second measuring tube positioning assembly is slidingly connected to the two measuring tube longitudinal guide rails 10 and threadedly connected to the longitudinal screw rod 61.

[0063] Specifically, the longitudinal drive assembly 6 further includes a longitudinal hand wheel 62, and the longitudinal hand wheel 62 is fixedly connected to one end of the longitudinal screw rod 61. Further, the longitudinal hand wheel 62 can also be plugged and locked with the base 1 through a locking pin to prevent the longitudinal screw rod 61 from rotating at will.

[0064] Specifically, the longitudinal screw rod 61 is rotatably mounted on the base 1 via a bearing.

[0065] Alternatively, the longitudinal drive assembly 6 may also be a linear motor.

[0066] It should be noted that when the measuring tube transverse guide rail 9 and the measuring tube longitudinal guide rail 10 are assembled and tightened, the dimension measurement and dial indicator measurement method are used to ensure that each set of measuring tube transverse guide rails 9 is parallel to the X-axis and perpendicular to the base 1 (adjustment error ≤ 0.04mm); the transverse screw rod 51 is centered between the two measuring tube transverse guide rails 9; the longitudinal screw rod 61 is similar to the transverse screw rod 51, and the longitudinal screw rod 61 is centered between the two measuring tube longitudinal guide rails 10 to ensure symmetry (adjustment error ≤ 0.04mm).

[0067] On the basis of any of the above schemes, the measuring tube positioning assembly 2 includes a measuring tube guide rail seat 21, a measuring tube screw nut 22, a measuring tube positioning base 23, a measuring tube positioning block 24 and a measuring tube pressing block 25. The measuring tube guide rail seat 21 and the measuring tube screw nut 22 are fixedly connected to the bottom surface of the measuring tube positioning base 23, the measuring tube positioning block 24 is fixedly connected to the top surface of the measuring tube positioning base 23, the measuring tube pressing block 25 is detachably connected to the measuring tube positioning block 24, the measuring tube pressing block 25 and the measuring tube positioning block 24 have a measuring tube clamping groove on the side facing each other, the measuring tube guide rail seat 21 is slidably connected to the base 1, and the measuring tube screw nut 22 is transmission-connected to the corresponding transverse drive assembly 5 or the longitudinal drive assembly 6.

[0068] The measuring tube guide rail seat 21 is slidably matched with the corresponding measuring tube transverse guide rail 9 or the measuring tube longitudinal guide rail 10, the measuring tube lead screw nut 22 is threadedly driven with the corresponding transverse screw rod 51 or the longitudinal screw rod 61, and the measuring tube positioning block 24 and the measuring tube positioning block 24 clamp and position the measuring tube through the measuring tube clamping groove.

[0069] Specifically, the measuring tube lead screw nut 22 of the first measuring tube positioning assembly is threadedly connected to the transverse lead screw 51 , and the measuring tube lead screw nut 22 of the second measuring tube positioning assembly is threadedly connected to the longitudinal lead screw 61 .

[0070] Among them, the installation of the measuring tube positioning base 23 needs to be debugged by metering to ensure that the flatness error is ≤0.04mm.

[0071] On the basis of any of the above solutions, the measuring tube positioning assembly 2 includes at least two measuring tube pressing blocks 25, and the at least two measuring tube pressing blocks 25 are arranged at intervals.

[0072] At least two measuring tube pressing blocks 25 spaced apart are used to clamp the measuring tube, so that the clamping stability of the measuring tube is high.

[0073] On the basis of any of the above solutions, two measuring tube clamping grooves are provided at intervals on the sides facing each other of the measuring tube pressing block 25 and the measuring tube positioning block 24 , and the measuring tube clamping grooves are semicircular grooves.

[0074] Two measuring tube clamping grooves spaced apart from each other can clamp two parallel measuring tubes at the same time.

[0075] On the basis of any of the above schemes, it also includes a coil longitudinal guide rail 7 and a coil transverse guide rail 8, the coil longitudinal guide rail 7 is fixedly connected to the measuring tube positioning base 23 of another measuring tube positioning assembly 2, and is parallel to the longitudinal drive assembly 6, the coil transverse guide rail 8 is fixedly connected to the base 1, and is parallel to the transverse drive assembly 5, and there are three coil support positioning assemblies 3, two of which are slidably connected to the coil transverse guide rail 8, and the other coil support positioning assembly 3 is slidably connected to the coil longitudinal guide rail 7.

[0076] The coil longitudinal guide rail 7 and the coil transverse guide rail 8 respectively guide the coil support positioning assembly 3 at the corresponding position. The coil longitudinal guide rail 7 moves with the corresponding measuring tube positioning base 23 to avoid interference with the movement of the measuring tube positioning base 23.

[0077] Specifically, the coil longitudinal guide rail 7 is fixedly connected to the measuring tube positioning base 23 of the second measuring tube positioning assembly and is arranged along the Y-axis direction. The coil transverse guide rail 8 is arranged along the X-axis direction.

[0078] Based on any of the above solutions, Figure 4 and Fig. 9 As shown, the coil support positioning assembly 3 includes a coil support guide rail seat 31, a coil support seat 32, a coil support positioning block 33 and a coil support bolt assembly 34. The coil support guide rail seat 31 is slidably connected to the corresponding coil longitudinal guide rail 7 or the coil transverse guide rail 8, the coil support seat 32 is fixedly connected to the top surface of the coil support guide rail seat 31, the coil support positioning block 33 is fixedly connected to the top surface of the coil support seat 32, and the middle portion of the coil support bolt assembly 34 is penetrated through the upper end of the coil support positioning block 33.

[0079] The coil support rail seat 31 is slidably matched with the corresponding coil longitudinal rail 7 or coil transverse rail 8 , the coil support seat 32 supports the coil support positioning block 33 , and the coil support bolt assembly 34 fixes the coil support on the coil support positioning block 33 .

[0080] Specifically, Figure 4 and Fig. 9 As shown, when fixing the coil support, the bolt of the coil support bolt assembly 34 first passes through one coil support 300, then passes through the coil support positioning block 33, and then passes through the other coil support 300, and finally is threadedly connected with the nut of the coil support bolt assembly 34, thereby fixing the two coil supports 300.

[0081] Based on any of the above schemes, the main body support assembly 4 includes a main body guide rail seat 41, a main body support seat 42 and a main body support frame 43. The main body guide rail seat 41 is slidably connected to the base 1, the main body support seat 42 is fixedly connected to the top surface of the main body guide rail seat 41, and the main body support seat 42 is rotatably connected with a main body locking nut. The main body support frame 43 vertically slides with the main body support seat 42 and is threadedly connected to the main body locking nut.

[0082] The main body guide seat 41 slides along the base 1, and the position of the main body support assembly 4 on the base 1 can be adjusted to be suitable for various types of flow meters. The main body support frame 43 can vertically adjust the support height relative to the main body support seat 42, and is locked and positioned by a locking nut. The main body support frame 43 is a V-shaped plate, and the main body 200 of the flow meter can be directly placed on the main body support frame 43.

[0083] Specifically, it also includes a main body support guide rail, which is arranged along the X-axis direction and fixedly connected to the base 1, and the main body guide rail seat 41 is slidably connected to the main body support guide rail.

[0084] When a Coriolis flowmeter housing assembly positioning spot welding fixture of the present embodiment is used, the paired measuring tube 100 is pre-installed into the fixed block 400 of the flowmeter, the measuring tube 100 is placed in the fixture, the transverse screw 51 is rotated, and the two first measuring tube positioning assemblies can move symmetrically (i.e., approach or move away from each other at the same time), and the longitudinal screw 61 is rotated, and the second measuring tube positioning assembly moves along the Y axis. After the first measuring tube positioning assembly and the second measuring tube positioning assembly are adjusted to a suitable position, the measuring tube positioning block 24 is tightly attached to the measuring tube 100, the transverse hand wheel 52 and the longitudinal hand wheel 62 are locked, and the measuring tube pressing block 25 is used to press the measuring tube 100 to prevent loosening;

[0085] The coil support bolt assembly 34 is used to fix the coil support 300 to the corresponding coil support positioning block 33, and the coil support positioning assembly 3 is pushed to slide along the corresponding coil longitudinal guide rail 7 or coil transverse guide rail 8, and the coil support 300 is adjusted to be close to the measuring tube 100, and laser spot welding is performed to weld the coil support 300 and the measuring tube 100;

[0086] The fixing block 400 at the first measuring tube positioning assembly is close to the positioning surface (the positioning surface is located on the side wall of the measuring tube positioning block 24 of the first measuring tube positioning assembly, and the positioning surface ensures the positioning of the fixing block 400 on the measuring tube 100), and the fixing block 400 and the measuring tube 100 are laser spot welded;

[0087] After the spot welding is completed, the brazing fixing block 11 is used to clamp and fix the measuring tube 100 to avoid deformation;

[0088] Place the main body 200 on the V-shaped main body support frame 43 of the main body support assembly 4, insert the measuring tube 100 into the main body 200, and perform spot welding; after the spot welding of the entire measuring tube 100 and the main body 200 is completed, loosen all the measuring tube pressing blocks 25 and the coil bracket bolt assemblies 34, loosen the horizontal hand wheel 52, and the two first measuring tube positioning assemblies move in the opposite direction at the same time, and the flow meter (housing) assembly can be taken out.

[0089] For flow meters of the same specification, the welding effects of the tooling of the utility model and the existing tooling are compared as shown in the following table.

[0090]

[0091] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "X-axis", "Y-axis", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0092] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0093] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0094] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0095] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A Coriolis flowmeter housing assembly positioning spot welding tool, characterized in that: The invention comprises a base (1), a measuring tube positioning assembly (2), a coil support positioning assembly (3) and a main body support assembly (4); the measuring tube positioning assembly (2), the coil support positioning assembly (3) and the main body support assembly (4) are all slidably connected to the base (1); the measuring tube positioning assembly (2) and the coil support positioning assembly (3) are both multiple and arranged in a one-to-one correspondence; the main body support assembly (4) is located on one side of the measuring tube positioning assembly (2) and the coil support positioning assembly (3).

2. A Coriolis flowmeter housing assembly positioning spot welding tool according to claim 1, characterized in that: The invention also comprises a transverse drive assembly (5) and a longitudinal drive assembly (6), wherein the transverse drive assembly (5) and the longitudinal drive assembly (6) are both connected to the base (1), the transverse drive assembly (5) is perpendicular to the longitudinal drive assembly (6), the measuring tube positioning assemblies (2) are three, two of which are transmission-connected to the transverse drive assembly (5), and the other one of which is transmission-connected to the longitudinal drive assembly (6), and the longitudinal drive assembly (6) and the main body support assembly (4) are respectively located on both sides of the transverse drive assembly (5).

3. A Coriolis flowmeter housing assembly positioning spot welding tool according to claim 2, characterized in that: It also comprises a measuring tube transverse guide rail (9), the transverse drive assembly (5) comprises a transverse screw rod (51), the measuring tube transverse guide rail (9) is fixedly connected to the base (1), wherein two measuring tube positioning assemblies (2) are arranged at intervals and are slidably connected to the measuring tube transverse guide rail (9), the transverse screw rod (51) is rotatably mounted on the base (1), and the two ends of the transverse screw rod (51) respectively have a transverse first thread segment and a transverse second thread segment with opposite spiral directions, wherein the two measuring tube positioning assemblies (2) are respectively threadedly connected to the transverse first thread segment and the transverse second thread segment.

4. A Coriolis flowmeter housing assembly positioning spot welding tool according to claim 2, characterized in that: It also comprises a measuring tube longitudinal guide rail (10), the longitudinal drive assembly (6) comprises a longitudinal screw rod (61), the measuring tube longitudinal guide rail (10) is fixedly connected to the base (1), another measuring tube positioning assembly (2) is slidably connected to the measuring tube longitudinal guide rail (10), the longitudinal screw rod (61) is rotatably mounted on the base (1), and the longitudinal screw rod (61) is threadedly connected to another measuring tube positioning assembly (2).

5. A Coriolis flowmeter housing assembly positioning spot welding tool according to claim 2, characterized in that: The measuring tube positioning assembly (2) comprises a measuring tube guide rail seat (21), a measuring tube lead screw nut (22), a measuring tube positioning base (23), a measuring tube positioning block (24) and a measuring tube pressing block (25); the measuring tube guide rail seat (21) and the measuring tube lead screw nut (22) are fixedly connected to the bottom surface of the measuring tube positioning base (23); the measuring tube positioning block (24) is fixedly connected to the top surface of the measuring tube positioning base (23); the measuring tube pressing block (25) is detachably connected to the measuring tube positioning block (24); the measuring tube pressing block (25) and the measuring tube positioning block (24) have a measuring tube clamping groove on their facing sides; the measuring tube guide rail seat (21) is slidably connected to the base (1); and the measuring tube lead screw nut (22) is drivingly connected to the corresponding transverse drive assembly (5) or the longitudinal drive assembly (6).

6. A Coriolis flowmeter housing assembly positioning spot welding tool according to claim 5, characterized in that: The measuring tube positioning assembly (2) comprises at least two measuring tube pressing blocks (25), and the at least two measuring tube pressing blocks (25) are arranged at intervals.

7. A Coriolis flowmeter housing assembly positioning spot welding tool according to claim 6, characterized in that: Two measuring tube clamping grooves are provided at intervals on the sides facing each other of the measuring tube pressing block (25) and the measuring tube positioning block (24), and the measuring tube clamping grooves are semicircular grooves.

8. A Coriolis flowmeter housing assembly positioning spot welding tool according to claim 5, characterized in that: It also comprises a coil longitudinal guide rail (7) and a coil transverse guide rail (8), wherein the coil longitudinal guide rail (7) is fixedly connected to the measuring tube positioning base (23) of another measuring tube positioning assembly (2) and is parallel to the longitudinal drive assembly (6), the coil transverse guide rail (8) is fixedly connected to the base (1) and is parallel to the transverse drive assembly (5), and there are three coil support positioning assemblies (3), two of which are slidably connected to the coil transverse guide rail (8), and the other coil support positioning assembly (3) is slidably connected to the coil longitudinal guide rail (7).

9. A Coriolis flowmeter housing assembly positioning spot welding tool according to claim 8, characterized in that: The coil support positioning assembly (3) comprises a coil support rail seat (31), a coil support seat (32), a coil support positioning block (33) and a coil support bolt assembly (34); the coil support rail seat (31) is slidably connected to the corresponding coil longitudinal guide rail (7) or the coil transverse guide rail (8); the coil support seat (32) is fixedly connected to the top surface of the coil support rail seat (31); the coil support positioning block (33) is fixedly connected to the top surface of the coil support seat (32); and the middle portion of the coil support bolt assembly (34) is inserted through the upper end of the coil support positioning block (33).

10. A Coriolis flowmeter housing assembly positioning spot welding tool according to any one of claims 1 to 9, characterized in that: The main body support assembly (4) comprises a main body guide rail seat (41), a main body support seat (42) and a main body support frame (43); the main body guide rail seat (41) is slidably connected to the base (1); the main body support seat (42) is fixedly connected to the top surface of the main body guide rail seat (41); a main body locking nut is rotatably connected to the main body support seat (42); the main body support frame (43) is vertically slidably matched with the main body support seat (42) and is threadedly connected to the main body locking nut.

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