CN210436841U

CN210436841U - Marking device for flowmeter

Info

Publication number: CN210436841U
Application number: CN201920764651.6U
Authority: CN
Inventors: 吴啟萍; 李爱明
Original assignee: Nanjing Metron Measurement And Control Instrument Co Ltd
Current assignee: Nanjing Metron Measurement And Control Instrument Co Ltd
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2020-05-01
Anticipated expiration: 2029-05-24

Abstract

The utility model discloses a flow meter marking device, which comprises a base and a marking machine arranged on the base, and further comprises a support arranged on one side of the marking machine on the upper surface of the base, a workbench arranged on the support and used for placing a plane workpiece, a three-jaw chuck arranged on the workbench and used for clamping a revolving body workpiece, and a first motor for driving the three-jaw chuck to rotate, wherein the support is provided with a first driving component for driving the workbench to move along the length direction of the workbench, the base is provided with a second driving component for driving the support to move along the width direction of the support, and the workbench is provided with a locking component for fixing the plane workpiece; the marking device can mark a revolving body workpiece and a plane workpiece, has wide application range, greatly saves manpower and improves the processing efficiency.

Description

Marking device for flowmeter

Technical Field

The utility model relates to a technical field of flowmeter processing, in particular to mark device is beaten to flowmeter.

Background

The flowmeter, defined by the national committee for the approval of the scientific and technical names, is: meters for indicating the measured flow and/or the total amount of fluid in a selected time interval, which is simply a meter for measuring the flow of fluid in a pipe or open channel, are classified into differential pressure type flow meters, rotameters, throttling type flow meters, electromagnetic flow meters, ultrasonic flow meters, and classified by media: liquid flow meters and gas flow meters need to mark parts in the flow meters in the process of processing the flow meters, and the existing marking method generally prints the required marks on a plane label and then screws the label on a workpiece through bolts.

However, the following use defects exist in the prior art: when the outer surface of the liquid level sensor of the liquid level meter needs to be marked, the outer surface of the liquid level sensor is a curved surface, the size is small, the use sensitivity of the liquid level sensor is influenced by a method of marking by a label, the occupied space of the liquid level sensor in a flowmeter is greatly increased, the label is required to be installed on a workpiece in the later stage of a worker, the method of manual installation is time-consuming and labor-consuming, and the processing efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a mark device is beaten to flowmeter, its advantage: the marking device can mark a revolving body workpiece and a plane workpiece, and is wide in application range, time-saving, labor-saving and high in machining efficiency.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a mark device is beaten to flowmeter, includes the base and sets up the marking machine on the base, still including setting up the support that is located marking machine one side on the base upper surface, set up the workstation that is used for placing the plane work piece on the support, set up the three-jaw chuck that is used for centre gripping solid of revolution work piece and drive three-jaw chuck pivoted first motor on the workstation, be equipped with the second drive assembly that the first drive assembly that drive workstation removed along its length direction and drive workstation removed along base width direction on the support, be equipped with the locking Assembly who is used for fixed plane work piece on the workstation.

According to the technical scheme, firstly, a three-jaw chuck is used for clamping a revolving body workpiece; secondly, fixing the plane workpiece on a workbench by using a locking assembly; then, a first driving component is used for driving the workbench to move to a proper position along the length direction of the workbench; finally, the second driving assembly is used for driving the workbench to move to a proper position along the width direction of the base, and finally the revolving body workpiece and the plane workpiece are moved to the proper position, so that the marking machine can mark different positions of the revolving body workpiece and the plane workpiece; the marking device with the structure is time-saving and labor-saving, wide in application range and capable of improving machining efficiency.

The utility model discloses further set up to: the support is including setting up on the base and rather than the length direction syntropy installation piece, setting up the backup pad on installation piece roof, two relative settings in the backup pad upper surface and rather than length direction syntropy first guide block and second guide block, first guide block and second guide block are connected with the lower surface of workstation and set up along its width direction is relative.

Through the technical scheme, the support formed by combining the mounting block, the supporting plate, the first guide block and the second guide block plays a role in supporting the workbench, can stably support the revolving body workpiece and the plane workpiece, and improves the machining efficiency.

The utility model discloses further set up to: the upper surface of first guide block is equipped with the spout along its length direction, first drive assembly including set up the second motor on first guide block end wall, rotate the lead screw that sets up in the spout and with lead screw thread fit's slider nut, the diapire one end of workstation and slider nut's lateral wall fixed connection, the diapire other end of workstation slides at the upper surface of second guide block.

Through the technical scheme, the screw rod is driven to rotate by the second motor, and the sliding groove has a limiting effect on the movement of the sliding block nut, so that the sliding block nut is driven to move along the length direction of the screw rod, and the workbench can be driven to move to a proper position along the width direction of the base; the driving mode is convenient to operate, time-saving and labor-saving, the marking machine can mark different positions of the revolving body workpiece and the plane workpiece, the application range is wide, and the machining efficiency is improved.

The utility model discloses further set up to: the upper surface of second guide beam is equipped with the guide way along its length direction, the guide way internal fixation has the guide bar rather than the length direction syntropy, be equipped with the guide block on the diapire of workstation and the relative one end of slider nut, the guide block slides along the length direction of guide bar.

Through above-mentioned technical scheme, the cooperation of guide way and guide block plays limiting displacement to the removal of workstation, has improved the stability of workstation removal in-process.

The utility model discloses further set up to: the mounting block is internally provided with a cavity, the second driving assembly comprises two third motors oppositely arranged on the side walls of the mounting block, a bevel gear set arranged in the cavity, a connecting rod connected with the bevel gear set, fluted discs arranged at two ends of the connecting rod, racks meshed with the fluted discs and a driving block arranged on the side wall of the sawtooth deviating from the rack, a driving shaft of the third motor extends into the cavity and is connected with the bevel gear set, one end, far away from the racks, of the driving block extends to the upper surface of the base and is fixedly connected with the lower surface of the supporting plate, and the upper surface of the mounting block is provided with an opening for the driving block to slide along the width direction of the upper surface.

Through above-mentioned technical scheme, utilize the third motor drive bevel gear group to rotate, and then drive the fluted disc and rotate, because the opening plays limiting displacement to the removal of drive block, and then drive the rack and remove along the width direction of base to drive the mount pad and remove to suitable position along the width direction of base, make marking machine beat the mark to the different positions of solid of revolution work piece and plane work piece, application scope is wide, has improved machining efficiency.

The utility model discloses further set up to: locking Assembly is including setting up latch segment and the first bolt that just is the L type in plane work piece four corners on the workstation, a plurality of screw holes have been arranged to the upper surface of workstation equidistant, the upper surface of latch segment is equipped with the waist type hole that is the L type, first bolt from top to bottom inserts waist type hole, threaded hole in proper order, the horizontal end and the vertical terminal lateral wall of latch segment all laminate on the lateral wall of plane work piece.

Through the technical scheme, the first bolt is sequentially inserted into the waist-shaped hole and the threaded hole from top to bottom, the locking block can be fixed on the upper surface of the workbench, and the planar workpiece can be further fixed on the workbench; this locking mode, simple structure makes things convenient for the dismouting, through the distance size between the four latch segments of adjustment, can fix the plane work piece of equidimension not on the workstation, and application scope is wide.

The utility model discloses further set up to: the upper surface of workstation is equipped with the stand, the stand is equipped with the through-hole that a plurality of drive shafts that supply first motor passed along its direction of height equipartition towards the lateral wall of marking machine, the both sides that the stand is located the through-hole are equipped with a plurality of mounting holes along its direction of height equipartition, the casing four corners of first motor all is equipped with the lug, be equipped with the fixed orifices on the lug, insert in the fixed orifices through the second bolt and mounting hole threaded connection.

Through above-mentioned technical scheme, at first pass the through-hole with the drive shaft of first motor, insert the second bolt in fixed orifices, the mounting hole in proper order, and then can install first motor on the stand, the equidistance of direction of height of stand is arranged along to mounting hole and through-hole simultaneously, can install the motor at suitable height, makes things convenient for the marking machine to beat the mark to the work piece.

The utility model discloses further set up to: and a distance sensor is arranged on the side wall of the three-jaw chuck facing the marking machine and is electrically connected with the second motor and the third motor respectively.

Through above-mentioned technical scheme, utilize distance sensor real-time detection three-jaw chuck and the distance numerical value between the marking machine body to convey the data that detect to PLC control circuit in real time, when distance numerical value reached the setting value, second motor and third motor stop work, and then the solid of revolution work piece removes to suitable position, and the marking machine can beat the mark to the outer wall of solid of revolution work piece this moment, has realized automatic work, has improved machining efficiency.

To sum up, the utility model discloses following beneficial effect has:

1. firstly, clamping a revolving body workpiece by using a three-jaw chuck; secondly, fixing the plane workpiece on a workbench by using a locking assembly; then, a first driving component is used for driving the workbench to move to a proper position along the length direction of the workbench; finally, the second driving assembly is used for driving the workbench to move to a proper position along the width direction of the base, and finally the revolving body workpiece and the plane workpiece are moved to the proper position, so that the marking machine can mark different positions of the revolving body workpiece and the plane workpiece; the marking device formed by adopting the structure is time-saving and labor-saving, has wide application range and improves the processing efficiency;

2. the bevel gear set is driven to rotate by the third motor, so that the fluted disc is driven to rotate, the opening has a limiting effect on the movement of the driving block, and the rack is driven to move along the width direction of the mounting block, so that the workbench on the supporting plate is driven to move to a proper position along the width direction of the base, the marking machine marks different positions of the revolving body workpiece and the plane workpiece, the application range is wide, and the processing efficiency is improved;

3. the cooperation of guide way and guide block plays limiting displacement to the removal of workstation, has improved the stability of workstation removal in-process.

Drawings

Fig. 1 is a schematic view of the overall structure of the present embodiment.

Fig. 2 is a schematic structural view for embodying the locking assembly in the present embodiment.

Fig. 3 is a schematic structural diagram for embodying the first drive assembly in the present embodiment.

Fig. 4 is a schematic structural view for embodying the positional relationship between the guide block and the guide groove in the present embodiment.

Fig. 5 is a schematic structural diagram for embodying the second drive assembly in the present embodiment.

Fig. 6 is a schematic structural diagram for showing the positional relationship between the rack and the toothed disc in the present embodiment.

Reference numerals: 1. a base; 2. marking machine; 3. a support; 31. mounting blocks; 32. a first guide block; 33. a second guide block; 34. a support plate; 4. a work table; 5. a three-jaw chuck; 6. a first motor; 7. a first drive assembly; 71. a second motor; 72. a screw rod; 73. a slider nut; 8. a second drive assembly; 81. a third motor; 82. a bevel gear set; 83. a fluted disc; 84. a rack; 85. a drive block; 86. a connecting rod; 9. a locking assembly; 91. a locking block; 92. a first bolt; 10. a chute; 11. a guide groove; 12. a guide bar; 13. a guide block; 14. a cavity; 15. an opening; 16. a threaded hole; 17. a kidney-shaped hole; 18. a column; 19. a through hole; 20. mounting holes; 21. a lug; 22. a fixing hole; 23. a second bolt; 24. a distance sensor; 25. a planar workpiece; 26. a revolving body workpiece.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

a marking device for a flowmeter, which refers to fig. 1, comprises a rectangular base 1, and a marking machine 2 is arranged on the upper surface of the base 1.

Referring to fig. 1, a support 3 is arranged on the left side of a marking machine 2 on the upper surface of a base 1, a workbench 4 for placing a planar workpiece 25 is arranged on the support 3, an upright column 18 is arranged on the workbench 4, a first motor 6 is arranged on the upright column 18, a driving shaft of the first motor 6 is connected with a three-jaw chuck 5 for clamping a revolving body workpiece 26, a first driving assembly 7 (fig. 3) for driving the workbench 4 to move along the length direction of the base 1 and a second driving assembly 8 for driving the workbench 4 to move along the width direction of the base 1 are arranged on the support 3, and a locking assembly 9 for fixing the planar workpiece 25 is arranged below the marking machine 2 on the workbench 4; firstly, a plane workpiece 25 is placed on a workbench 4, and the plane workpiece 25 can be fixed on the workbench 4 by using a locking assembly 9; secondly, the three-jaw chuck 5 is utilized to clamp the revolving body workpiece 26, the three-jaw chuck 5 is driven to rotate through the first motor 6, and then the revolving body workpiece 26 is driven to rotate; then, the first driving component 7 (fig. 3) is used for driving the workbench 4 to move left and right along the length direction of the base 1, so that the marking machine 2 can process different positions of the planar workpiece 25 and the revolving body workpiece 26 in the length direction; finally, the second driving component 8 is used for driving the workbench to move along the width direction of the base 1, so that the workbench 4 is driven to move along the width direction of the base 1, and finally the marking machine 2 marks different positions of the workpiece in the length direction and the width direction; the marking device with the structure can mark the revolving body workpiece 26 and the plane workpiece 25, and has the advantages of wide application range, time and labor saving and high processing efficiency.

Referring to fig. 2, the bracket 3 includes a rectangular mounting block 31 disposed on the base 1, a support plate 34 disposed on the upper surface of the mounting block 31 and having the same direction as the length direction thereof, and a first guide block 32 and a second guide block 33 disposed opposite to each other and arranged along the width direction thereof, wherein the length direction of the first guide block 32 and the length direction of the second guide block 33 are the same direction as the length direction of the mounting block 31, and the length direction of the mounting block 31 is the same direction as the length direction of the base 1; the bracket 3 formed by combining the mounting block 31, the support plate 34, the first guide block 32 and the second guide block 33 has a supporting function on the workbench 4, can stably support the revolving body workpiece 26 and the plane workpiece 25, and improves the processing efficiency.

Referring to fig. 2, an upright column 18 is arranged on the upper surface of a workbench 4, a plurality of through holes 19 are uniformly distributed on the side wall of the upright column 18 facing a marking machine 2 along the height direction of the upright column, a driving shaft of a first motor 6 penetrates through the through holes 19 to be fixedly connected with the axis of a three-jaw chuck 5, a plurality of mounting holes 20 are uniformly distributed on the two sides of the upright column 18 located on the through holes 19 along the height direction of the upright column, lugs 21 are arranged at the four corners of a casing of the first motor 6, fixing holes 22 are arranged on the lugs 21, and second bolts 23 are inserted into the fixing holes 22 and are in threaded; insert second bolt 23 in fixed orifices 22, the mounting hole 20 from top to bottom in proper order, can fix first motor 6 on stand 18, mounting hole 20 and through-hole 19 set up along the direction of height equipartition of stand 18, can install first motor 6 and three-jaw chuck 5 at suitable height to marking machine 2 beats mark to solid of revolution work piece 26.

Referring to fig. 2 and 3, the upper surface of the first guide block 32 is provided with a sliding groove 10 along the length direction thereof, the first driving assembly 7 includes a second motor 71 arranged on the end wall of the first guide block 32, a screw rod 72 rotatably arranged in the sliding groove 10, and a slider nut 73 in threaded fit with the screw rod 72, one end of the bottom wall of the worktable 4 is fixedly connected with the side wall of the slider nut 73, the other end of the bottom wall of the worktable 4 slides along the length direction of the upper surface of the second guide block 33, and the slider nut 73 slides along the length direction of the sliding groove 10; firstly, the second motor 71 is utilized to drive the screw rod 72 to rotate, and the sliding chute 10 has a limiting effect on the movement of the sliding block nut 73, so that the sliding block nut 73 is driven to slide along the length directions of the sliding chute 10 and the screw rod 72, the workbench 4 is driven to slide to a proper position along the length direction of the base 1, and finally, the marking of different positions of the plane workpiece 25 and the revolving body workpiece 26 by the marking machine 2 is realized, and the application range is wide; this drive mode, simple structure, convenient operation, labour saving and time saving has improved machining efficiency.

Referring to fig. 2 and 4, the upper surface of the second guide block 33 is provided with a guide groove 11 along the length direction thereof, a guide rod 12 in the same direction as the length direction thereof is fixed in the guide groove 11, a guide block 13 is arranged on the bottom wall of the end of the workbench 4 opposite to the slider nut 73, and the guide block 13 slides along the length direction of the guide rod 12; when the slider nut 73 slides along the length direction of the screw 72, the guide block 13 slides along the length direction of the guide rod 12 and the guide groove 11, and the guide block 13 and the guide rod 12 are matched to limit the movement of the workbench 4, so that the stability of the workbench 4 in the moving process is improved.

Referring to fig. 5 and 6, a cavity 14 is formed in the mounting block 31, the second driving assembly 8 includes a third motor 81 disposed on a side wall of the base 1, a bevel gear group 82 disposed in the cavity 14, a connecting rod 86 connected to the bevel gear group 82, the driving device comprises a fluted disc 83 arranged at two ends of a connecting rod 86, racks 84 respectively meshed with the two fluted discs 83 and driving blocks 85 respectively arranged on the side walls of the two racks 84 departing from the sawteeth, the length direction of the racks 84 is the same as that of the mounting block 31, the length direction of the connecting rod 86 is opposite to that of the racks 84, a driving shaft of a third motor 81 extends into the cavity 14 and is connected with the bevel gear set 82, one end of the driving block 85, far away from the racks 84, extends out of the upper surface of the mounting block 31 and is fixedly connected with the lower surface of the supporting plate 34, and the upper surface of the mounting block 31 is provided with an opening 15 for the driving block 85 to slide along the width direction; the bevel gear group 82 is driven to rotate by the third motor 81, so that the fluted disc 83 is driven to rotate, the rotating direction of the fluted disc 83 is the same as the width direction of the base 1, the opening 15 has a limiting effect on the movement of the driving block 85, so that the rack 84 is driven to move along the width direction of the base 1, the mounting block 31 is driven to move to a proper position along the width direction of the base 1, and finally, the marking of different positions of the workpiece in the width direction by the marking machine 2 is realized; this drive mode, simple structure, convenient operation, labour saving and time saving has improved machining efficiency.

Referring to fig. 1 and 3, a distance sensor 24 is arranged on a side wall of the three-jaw chuck 5 facing the marking machine 2, and the distance sensor 24 is electrically connected with a second motor 71 and a third motor 81 (fig. 5) respectively; the distance sensor 24 is used for detecting the distance value between the three-jaw chuck 5 and the marking machine 2 in real time, detected data signals are transmitted to the PLC control circuit in real time, when the distance value reaches a set value, the second motor 71 and the third motor 81 (shown in figure 5) stop working, and then the revolving body workpiece 26 to be machined can be moved to a proper position, so that automatic work is realized, and machining efficiency is improved.

Referring to fig. 2, the locking assembly 9 includes locking blocks 91 and first bolts 92 which are arranged on the workbench 4 and located at four corners of the planar workpiece 25 in an L shape, the number of the locking blocks 91 is four, a plurality of threaded holes 16 are arranged on the upper surface of the workbench 4 at equal intervals, a waist-shaped hole 17 in an L shape is arranged on the upper surface of the locking block 91, the first bolts 92 are sequentially inserted into the waist-shaped hole 17 and the threaded holes 16 from top to bottom, a locking space for fixing the planar workpiece 25 is formed between the four locking blocks 91 in a surrounding manner, and the vertical ends and the horizontal ends of the locking blocks 91 are respectively attached to the side wall of the planar workpiece 25; insert waist type hole 17, screw hole 16 with first bolt 92 from top to bottom in proper order in, and then can fix latch segment 91 on workstation 4, and screw hole 16 equipartition sets up the upper surface at workstation 4, the distance size between four adjustable latch segments 91 to work piece to not unidimensional, application scope is wide.

The working process is as follows: firstly, a revolving body workpiece 26 is stably clamped by a three-jaw chuck 5; secondly, the plane workpiece 25 is placed on the workbench 4, the first bolt 92 is sequentially inserted into the kidney-shaped hole 17 and the threaded hole 16 from top to bottom, the four locking blocks 91 can be fixed on the workbench 4, and the plane workpiece 25 can be further stably fixed on the workbench 4; then, the second motor 71 is used for driving the screw rod 72 to rotate, so that the workbench 4 is driven to move along the length direction of the base 1, the third motor 81 is used for driving the fluted disc 83 to rotate, the rack 84 is driven to move along the width direction of the base 1, and at the moment, the marking machine 2 can mark the surface of the planar workpiece 25; meanwhile, the distance sensor 24 is used for detecting the distance value between the revolving body workpiece 26 and the marking machine 2 in real time, the detected signal is transmitted to the PLC control circuit, when the distance value reaches a set value, the second motor 71 and the third motor 81 stop working, and then the revolving body workpiece 26 and the plane workpiece 25 move to proper positions; and finally, the first motor 6 is used for driving the three-jaw chuck 5 to rotate, and the marking machine 2 can process the proper position of the revolving body workpiece 26.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a flowmeter marking device, includes base (1) and marking machine (2) of setting on base (1), its characterized in that: still including setting up support (3) that the upper surface is located marking machine (2) one side in base (1), setting up workstation (4) that are used for placing plane work piece (25) on support (3), setting up three-jaw chuck (5) and drive three-jaw chuck (5) pivoted first motor (6) that are used for centre gripping solid of revolution work piece (26) on workstation (4), be equipped with on support (3) drive work piece (4) along first drive assembly (7) that its length direction removed and drive workstation (4) along second drive assembly (8) that base (1) width direction removed, be equipped with locking Assembly (9) that are used for fixed plane work piece (25) on workstation (4).

2. The flowmeter marking device of claim 1, wherein: the support (3) comprises an installation block (31) which is arranged on the base (1) and is in the same direction with the length direction of the base, a supporting plate (34) which is arranged on the top wall of the installation block (31), and two first guide blocks (32) and second guide blocks (33) which are oppositely arranged on the upper surface of the supporting plate (34) and are in the same direction with the length direction of the supporting plate, wherein the first guide blocks (32) and the second guide blocks (33) are connected with the lower surface of the workbench (4) and are oppositely arranged along the width direction of the workbench.

3. The flowmeter marking device of claim 2, wherein: the upper surface of first guide block (32) is equipped with spout (10) along its length direction, first drive assembly (7) including set up second motor (71) on first guide block (32) end wall, rotate lead screw (72) that set up in spout (10) and with lead screw (72) screw-thread fit's slider nut (73), the diapire one end of workstation (4) and the lateral wall fixed connection of slider nut (73), the diapire other end of workstation (4) slides at the upper surface of second guide block (33).

4. The flowmeter marking device of claim 3, wherein: the upper surface of second guide block (33) is equipped with guide way (11) along its length direction, guide way (11) internal fixation has guide bar (12) rather than the length direction syntropy, be equipped with guide block (13) on the diapire of workstation (4) and the relative one end of slider nut (73), guide block (13) slide along the length direction of guide bar (12).

5. The flowmeter marking device of claim 3, wherein: a cavity (14) is arranged in the mounting block (31), the second driving component (8) comprises two third motors (81) which are oppositely arranged on the side wall of the mounting block (31), a bevel gear set (82) arranged in the cavity (14), a connecting rod (86) connected with the bevel gear set (82), fluted discs (83) arranged at two ends of the connecting rod (86), racks (84) meshed with the fluted discs (83) and a driving block (85) arranged on the side wall of the rack (84) deviating from the sawtooth, the driving shaft of the third motor (81) extends into the cavity (14) and is connected with the bevel gear set (82), one end of the driving block (85) far away from the rack (84) extends to the upper surface of the base (1) and is fixedly connected with the lower surface of the supporting plate (34), the upper surface of the mounting block (31) is provided with an opening (15) for the driving block (85) to slide along the width direction.

6. The flowmeter marking device of claim 1, wherein: locking Assembly (9) just are latch segment (91) and first bolt (92) of L type including setting up on workstation (4) and being located plane work piece (25) four corners, a plurality of screw holes (16) have equidistantly arranged on the upper surface of workstation (4), the upper surface of latch segment (91) is equipped with waist type hole (17) that are the L type, first bolt (92) insert waist type hole (17), screw hole (16) from top to bottom in proper order in, the horizontal end and the vertical terminal lateral wall of latch segment (91) all laminate on the lateral wall of plane work piece (25).

7. The flowmeter marking device of claim 1, wherein: the upper surface of workstation (4) is equipped with stand (18), through-hole (19) that the lateral wall of stand (18) orientation marking machine (2) was equipped with the drive shaft of a plurality of confessions first motor (6) along its direction of height equipartition and passed, stand (18) are located the both sides of through-hole (19) and are equipped with a plurality of mounting holes (20) along its direction of height equipartition, the casing four corners of first motor (6) all is equipped with lug (21), be equipped with fixed orifices (22) on lug (21), insert in fixed orifices (22) through second bolt (23) with mounting hole (20) threaded connection.

8. The flowmeter marking device of claim 5, wherein: the side wall of the three-jaw chuck (5) facing the marking machine (2) is provided with a distance sensor (24), and the distance sensor (24) is electrically connected with the second motor (71) and the third motor (81) respectively.