CN210893504U

CN210893504U - Electrode pressure measuring device

Info

Publication number: CN210893504U
Application number: CN201921666704.7U
Authority: CN
Inventors: 范东宇; 鲁二敬; 刘春宁; 吴振华; 穆云平
Original assignee: CRRC Tangshan Co Ltd
Current assignee: CRRC Tangshan Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-06-30
Anticipated expiration: 2029-09-30

Abstract

The utility model provides an electrode pressure measuring device belongs to equipment detection technology field, and measuring device includes sleeve, locating component, pressure measurement subassembly and display device. The interior of the sleeve forms a containing cavity; the positioning assembly is arranged on the sleeve and used for accurately pressing the electrode rods with different specifications and types in the accommodating cavity; the pressure detection assembly is arranged on the upper portion of the sleeve and used for detecting the pressure of the electrode rod, and the pressure detection assembly is electrically connected with the display device. The pressure detection assembly in the device senses the electrode pressure of the electrode rod, particularly non-standard electrode rods of different specifications, generates an electric signal and transmits the electric signal to the display device, and the display device converts the electric signal into a numerical signal and displays the numerical signal. The utility model discloses the operation has solved the electrode pressure measurement in-process and has needed handheld operation problem, has eliminated the data error that arouses because of the measuring point is inaccurate, has advantages such as with low costs, small, easy operation, precision height, repeatability are strong, extensive applicability, security height, has important use value.

Description

Electrode pressure measuring device

Technical Field

The utility model belongs to the technical field of check out test set, more specifically say, relate to an electrode pressure measurement device.

Background

With the continuous popularization and application of automation technology in the field of intelligent manufacturing, resistance spot welding is widely applied to manufacturing industries such as automobiles, rail trains, aerospace and the like as an important automation welding technology. Welding pressure is an important parameter of resistance spot welding, and the accuracy of the pressure value in the welding process greatly influences the quality of a spot welding joint. In recent years, with the continuous innovation of electronic technology, resistance spot welding equipment attempts to directly assemble a pressure testing module, but in the using process, the measurement of a pressure element under the working state is interfered by a strong magnetic effect generated along with strong current, so that the measurement of a resistance spot welding pressure value is seriously influenced. In addition, repeated rigid collision occurs between the electrode rods under the action of electrode pressure in the spot welding process, and the pressure accuracy is obviously reduced after the equipment is in service for a long time, so that the periodic measurement and check of the electrode pressure by adopting an external matching device have important significance for maintaining accurate and stable electrode pressure in resistance spot welding.

At present, spot welding matched pressure measuring instruments widely popular in the market all utilize a pressure sensing block to convert measured pressure into various electric quantity signals to measure pressure values, and output signals of the pressure measuring instruments are easy to remotely transmit and can be conveniently displayed, recorded and adjusted. To industrial products, the non-standard electrode rod can be designed and used according to specific needs through resistance spot welding, the shape and the size of the electrode cap are changed simultaneously, the pressure measurement difficulty is increased, an operator needs to hold the electrode rod in the middle of the measurement process, the stability of the electrode rod is poor, and the pressure measurement accuracy is reduced. More importantly, the measuring range of the electrode pressure of the resistance spot welding equipment is large and can reach dozens of KN, the hand-held pressure transmitter seriously threatens the personal safety of operators, and personal safety accidents are very easy to happen.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electrode pressure measuring device aims at solving measuring electrode pressure, and handheld operating stability is poor, and has the problem of potential safety hazard.

In order to achieve the above object, the utility model adopts the following technical scheme: there is provided an electrode pressure measuring device including:

a sleeve, inside which a receiving cavity for receiving the electrode rod is formed;

the positioning assembly is arranged on the sleeve;

the pressure detection assembly is arranged at the upper part of the sleeve and used for detecting the pressure of the electrode rod, and the pressure detection assembly is electrically connected with the display equipment;

the electrode rod is pressed in the containing cavity through the positioning assembly, the pressure of the electrode rod is detected through the pressure detection assembly, and the pressure value is displayed through the display equipment.

Further, the positioning assembly comprises:

the conical sleeve is fixedly arranged at the lower end of the sleeve, an inner cavity is communicated with the accommodating cavity and is used for accommodating the electrode rod, the outer diameter of the conical sleeve is gradually reduced from top to bottom, a plurality of notches are formed in the circumferential direction of the lower end of the conical sleeve, and the lower end of the conical sleeve is divided into a plurality of pressing plates for pressing the electrode rod through the notches;

the thread sleeve is sleeved on the outer wall of the conical sleeve in a threaded manner;

when the threaded sleeve rotates and rises along the outer wall of the conical sleeve, the threaded sleeve is used for applying pressure to the pressing plates to press the electrode rod; when the threaded sleeve rotates and descends along the outer wall of the conical sleeve, the threaded sleeve releases the pressure of the pressing plates and loosens the electrode rod.

Furthermore, the inner side wall of the conical sleeve is provided with a non-slip mat, and the plurality of pressing plates are used for pressing the electrode rod through the non-slip mat.

Further, the pressure detection assembly includes:

and the pressure transmitter is arranged on the upper part of the sleeve and electrically connected with the display equipment, one side of the pressure transmitter is provided with a strain measurer, and the lower end face of the pressure transmitter is provided with a strain compensator which is used for abutting against the electrode rod.

Further, a tray for placing the display equipment is arranged on one side of the sleeve and connected with the sleeve through a connecting rod.

Further, the telescopic up end seted up with hold the mounting groove of chamber intercommunication, the protective housing has been placed in the mounting groove, the pressure measurement subassembly is located in the protective housing.

Further, the pressure detection subassembly passes through the wire electricity and connects display device, one side of mounting groove is seted up and is used for passing through the groove of stepping down of wire.

Further, seted up on telescopic lateral wall with hold the through-hole of chamber intercommunication, install laser positioning appearance on the telescopic lateral wall, laser positioning appearance passes through the through-hole is surveyd the position of electrode pole up end.

Further, the electrode pressure measuring apparatus further includes:

and the adjusting bolts are uniformly distributed in the circumferential direction of the sleeve, penetrate through the side wall of the sleeve and are used for abutting against the electrode rod to adjust the verticality of the electrode rod.

The utility model provides an electrode pressure measuring device's beneficial effect lies in: compared with the prior art, the utility model discloses electrode pressure measuring device, electrode rod wear to locate in the sleeve from bottom to top, and the upper end of electrode rod supports and leans on pressure measurement subassembly, and display device is connected to pressure measurement subassembly electricity, through the fixed electrode rod of locating component, makes electrode rod remain stable. The pressure detection assembly senses the electrode pressure of the electrode rod, generates an electric signal and transmits the electric signal to the display device, and the display device converts the electric signal into a numerical signal and displays the numerical signal. The problem of when measuring electrode pressure, need not handheld operation, operating stability is good, has improved measured data's accuracy and reliability, and can not cause harm to operating personnel is solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a front view of an electrode pressure measuring device according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of an electrode pressure measuring device according to an embodiment of the present invention;

fig. 3 is a top view of an electrode pressure measuring device according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of an electrode pressure measuring device according to another embodiment of the present invention;

fig. 5 is an enlarged view of a portion a in fig. 2.

In the figure: 1. a sleeve; 2. a positioning assembly; 201. a conical sleeve; 202. a notch; 203. pressing a plate; 204. a threaded sleeve; 3. a pressure detection assembly; 301. a pressure transmitter; 302. a strain gauge; 303. a strain compensator; 4. a display device; 5. a non-slip mat; 6. a tray; 7. a connecting rod; 8. mounting grooves; 9. a protective shell; 10. A wire; 11. a yielding groove; 12. a through hole; 13. a laser positioning instrument; 14. adjusting the bolt; 15. an electrode rod; 16. a spring; 17. adjusting a rod; 18. and a baffle plate.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It is right now that the utility model provides an electrode pressure measuring device explains. Referring to fig. 1 to 3, the electrode pressure measuring apparatus includes a sleeve 1, a positioning assembly 2, a pressure detecting assembly 3, and a display device 4.

The interior of the sleeve 1 forms a receiving cavity for receiving the electrode rod 15; the positioning component 2 is arranged on the sleeve 1; the pressure detection component 3 is arranged at the upper part of the sleeve 1 and used for detecting the pressure of the electrode rod 15, and the pressure detection component 3 is electrically connected with the display device 4; electrode rod 15 compresses tightly in holding the intracavity through locating component 2, detects electrode rod 15's pressure through pressure measurement subassembly 3 to show the pressure value through display device 4.

The electrode rod 15 is a conical rod, the diameter of the upper end is smaller than that of the lower end, the shape of the accommodating cavity of the sleeve 1 is matched with the outline of the electrode rod 15, when the electrode rod 15 is arranged in the containing cavity in a penetrating way, the distance between the outer side wall of the electrode rod 15 and the inner wall of the sleeve 1 is the same, the electrode rod 15 is fixed by the positioning assembly 2 at the lower end of the sleeve 1 to be kept stable, and the pressure detecting assembly 3 is installed at the upper end of the sleeve 1, and at this time, the upper end surface of the electrode rod 15 is abutted against the pressure detection component 3, the pressure detection component 3 induces the pressure change at the upper end of the electrode rod 15 to form an electric signal which is transmitted to the display device 4, the display device 4 is a microcomputer system, the analysis program and the display screen are loaded on the pressure detection device, the display device 4 receives the electric signals of the pressure detection component 3, the measured values are calculated, analyzed and measured to form data signals, and the data signals display the pressure values through the display screen.

The utility model provides an electrode pressure measuring device, compared with the prior art, the utility model discloses electrode pressure measuring device, electrode rod 15 wear to locate sleeve 1 from bottom to top, and electrode rod 15's upper end supports and leans on pressure measurement subassembly 3, and display device 4 is connected to 3 electricity of pressure measurement subassembly, through 2 fixed electrode rod 15 of locating component, makes electrode rod 15 remain stable. The pressure detection component 3 senses the electrode pressure of the electrode rod 15, generates an electric signal and transmits the electric signal to the display device 4, and the display device 4 converts the electric signal into a numerical signal and displays the numerical signal. The problem of when measuring electrode pressure, need not handheld operation, operating stability is good, has improved measured data's accuracy and reliability, and can not cause harm to operating personnel is solved.

As an embodiment of the present invention, please refer to fig. 1 to 2, the positioning assembly 2 includes a taper sleeve 201 and a screw sleeve 204. The conical sleeve 201 is fixedly arranged at the lower end of the sleeve 1, the inner cavity of the conical sleeve 201 is a cylindrical cavity, the inner cavity of the conical sleeve 201 is communicated with the accommodating cavity and is used for accommodating the electrode rod 15, the outer diameter of the conical sleeve 201 is gradually reduced from top to bottom, a plurality of notches 202 are circumferentially arranged at the lower end of the conical sleeve 201, and the lower end of the conical sleeve 201 is divided into a plurality of pressing plates 203 for pressing the electrode rod 15 through the notches 202; the thread sleeve 204 is sleeved on the outer wall of the conical sleeve 201 in a threaded manner; the screw sleeve 204 rotates and goes up and down along the outer wall of the conical sleeve 201, and is used for applying pressure to the plurality of pressure plates 203 to press the electrode rod 15 tightly or releasing the pressure of the plurality of pressure plates 203 to release the electrode rod 15. In this embodiment, toper cover 201 and sleeve 1 integrated into one piece, be located sleeve 1's lower extreme, the inner chamber of toper cover 201 and sleeve 1 hold the chamber intercommunication, the external diameter top-down of toper cover 201 reduces gradually, electrode rod 15 runs through toper cover 201 from bottom to top and penetrates in sleeve 1, make its upper portion support and lean on pressure measurement subassembly 3, notch 202 is seted up to the lower extreme circumference of toper cover 201, the opening direction of notch 202 is down, and the open end is located the lower terminal surface of toper cover 201, a plurality of notches 202 separate into a plurality of clamp plates 203 with the lower extreme of toper cover 201 lateral wall, the lower part of clamp plate 203 is the free end, the external screw thread has been seted up to the lower part circumference of toper cover 201 outer wall, the lateral surface in clamp plate 203 is. The inner wall of the screw sleeve 204 is provided with an internal thread matched with the external thread of the conical sleeve 201, the screw sleeve 204 is rotated, the screw sleeve 204 is enabled to rotate and ascend along the conical sleeve 201 through thread matching, and the diameter of the external thread on the outer side wall of the conical sleeve 201 is increased when the screw sleeve 204 rotates upwards, so that the screw sleeve 204 extrudes a plurality of pressing plates 203 inwards, the pressing plates 203 are enabled to be bent inwards at the same time, the free ends of the pressing plates 203 abut against the side wall of the electrode rod 15, and the electrode rod 15 is fixed.

As a specific embodiment of the present invention, please refer to fig. 2, the inner side wall of the tapered sleeve 201 is provided with a non-slip pad 5, and the plurality of pressing plates 203 are used for compressing the electrode rod 15 through the non-slip pad 5. In this embodiment, the anti-slip mat 5 is a cylindrical structure, and the suit is on the inner wall of toper cover 201, and when fixed electrode rod 15, a plurality of clamp plates 203 pass through the anti-slip mat 5 and lean on the lateral wall of electrode rod 15, can avoid clamp plate 203 and electrode rod 15 lateral wall to skid, and electrode rod 15 can be protected to the anti-slip mat 5 simultaneously, prevents that the pressure of clamp plate 203 is too big, causes the indentation to appear in the electrode rod 15 lateral wall and even damages. When the non-slip mat 5 is selected, the size of the lower port of the electrode rod 15 and the conical sleeve 201 needs to be determined according to the size, the inner diameter of the lower port of the conical sleeve 201 is D1, the thickness of the non-slip mat 5 is D2, and the diameter of the cross section of the electrode rod 15 at the lower port of the conical sleeve 201 is D3, that is, the gap h between the side wall of the electrode rod 15 and the lower port of the conical sleeve 201 is (D1-D3)/2, when the thickness D2 of the non-slip mat 5 is selected, 0.4-0.8 mm can be added on the basis of the value h according to the value of the gap h between the side wall of the electrode rod 15 and the lower port of the conical sleeve 201, and the deformation amount of the non-slip mat 5 is reserved, that is D2 [ (D1-D3)/2] +. The slipmat 5 selects for use for the subassembly of can dismantling based on electrode rod 15 size, consequently, satisfies the electrode rod 15 operation requirement of different dimensions, carries out pressure measurement to the nonstandard electrode rod 15 of different sizes.

As a specific embodiment of the present invention, please refer to fig. 2, the pressure detecting assembly 3 includes a pressure transmitter 301. The pressure transmitter 301 is arranged on the upper part of the sleeve 1 and is electrically connected with the display device 4, one side of the pressure transmitter 301 is provided with a strain gauge 302, and the lower end surface is provided with a strain compensator 303 used for abutting against the electrode rod 15. In this embodiment, the upper and lower end surfaces of pressure transmitter 301 are both concave surfaces, strain gauge 302 is installed in the concave surface of the lower end of pressure transmitter 301, and strain gauge 302 is installed on the side surface of pressure transmitter 301. The pressure transmitter 301 can detect the physical pressure, receive the pressure variable parameter, convert the pressure variable parameter into a standard electrical signal, and transmit the electrical signal to the electronic device, i.e., the above-mentioned display device 4, to display the pressure value. The strain gauge 302 measures the deformation of the deformed object, and converts the change into a change of an electrical physical quantity that can be conveniently measured, i.e., generates an induced electrical signal, by a change of, for example, resistance, capacitance, or inductance, and transmits it to the display device 4. The strain compensator 303 is used for compensating deformation, belongs to a compensation element, absorbs the deformation, and avoids the pressure transmitter 301 from being damaged due to the overlarge pressure of the electrode rod 15. When the electrode rod 15 generates the pressure, the pressure of the electrode rod 15 is measured by the strain gauge 302 in cooperation with the strain compensator 303.

As a specific embodiment of the present invention, please refer to fig. 1 to 3, a tray 6 for placing the display device 4 is disposed on one side of the sleeve 1, and the tray 6 is connected to the sleeve 1 through a connecting rod 7. In this embodiment, the tray 6 is a rectangular plate, the connecting rod 7 is L-shaped, one end of the connecting rod 7 is perpendicular to the side wall of the connecting sleeve 1, the other end of the connecting rod 7 is perpendicular to the bottom surface of the tray 6, and the display device 4 is mounted on the upper end surface of the tray 6 in a bolting, clamping or welding manner. The sleeve 1, the link 7 and the tray 6 are integrally formed.

As a specific embodiment of the present invention, please refer to fig. 2, fig. 3 and fig. 5, the upper end surface of the sleeve 1 is provided with a mounting groove 8 communicating with the accommodating cavity, a protection casing 9 is disposed in the mounting groove 8, and the pressure detecting assembly 3 is disposed in the protection casing 9. In this embodiment, 8 inside contours of mounting groove and the outline phase-match of protective housing 9, the cross section is circular, the recess has been seted up in the protective housing 9, pressure transmitter 301 installs in the recess in

protective housing

9, 8 internal diameters of mounting groove are 0.02mm bigger than the external diameter of protective housing 9, protective housing 9 can be placed in mounting groove 8, guarantee the stability of protective housing 9, make pressure transmitter 301 axis keep unanimous with the axis of electrode rod 15, satisfy the electrode rod 15 measurement requirement of different specification section shape sizes from this. The degree of depth of mounting groove 8 is less than 5 ~ 10mm of the height of protective housing 9, and the lower part circumference of the 8 lateral walls of mounting groove is equipped with the locating plate, locating plate and sleeve 1 integrated into one piece, and the locating plate is used for injecing the degree of depth that protective housing 9 inserted in mounting groove 8 for the lower extreme of pressure transmitter 301 on the protective housing 9 can well contact with the up end of electrode pole 15. The upper end of pressure transmitter 301 exposes protective housing 9, if not naked, protective housing 9 can take place faint plastic deformation under the effect of electrode pressure, can reduce pressure measurement subassembly 3's detection precision, and strain gauge 302 surveys and converts into feedback signal of telecommunication based on detecting faint elastoplasticity deformation. The pressure transmitter 301 is embedded in the protective shell 9, the protective shell 9 mainly has two functions, and the first function is used for protecting an electronic component in the pressure detection assembly 3; secondly, the pressure detection assembly 3 is prevented from falling off the electrode rod hole 15 during the process of being directly placed on the electrode rod 15.

As a specific embodiment of the present invention, please refer to fig. 2 to 3, the pressure detecting assembly 3 is electrically connected to the display device 4 through a wire 10, and one side of the mounting groove 8 is provided with a yielding groove 11 for passing through the wire 10. In this embodiment, pressure transmitter 301's connecting terminal and display device 4's connecting terminal set up relatively, connect through wire 10, and the groove of stepping down 11 is seted up in sleeve 1 up end, and is close to one side of tray 6, and the groove of stepping down 11 can be arc wall or rectangular channel, and wire 10 passes through in the groove of stepping down 11, has reduced the connection distance of wire 10, and simultaneously, wire 10 places more conceals in the groove of stepping down 11, and is not fragile.

As a specific embodiment of the present invention, please refer to fig. 1 to 3, a through hole 12 communicating with the accommodating cavity is formed on the sidewall of the sleeve 1, a laser positioning instrument 13 is installed on the sidewall of the sleeve 1, and the laser positioning instrument 13 observes the position of the upper end surface of the electrode rod 15 through the through hole 12. In this embodiment, laser positioning instrument 13 is also called laser positioning collimator, the laser beam that can provide is a high definition, the laser beam of easy resolution, a position and the levelness for measuring electrode rod 15, one side of laser positioning instrument 13 is equipped with the magnetic base, laser positioning instrument 13 passes through on magnetic base adsorbs and the lateral wall of sleeve 1, the axis of through-hole 12 is perpendicular with the axis of sleeve 1, the laser beam that laser positioning instrument 13 sent runs through this through-hole 12, a levelness for measuring 15 terminal surfaces of electrode rod, guarantee that the up end of electrode rod 15 and pressure transmitter 301 well contact, realize pressure detection.

As a specific embodiment of the present invention, please refer to fig. 1 to 3, the electrode pressure measuring device further includes a plurality of adjusting bolts 14. The adjusting bolts 14 are uniformly distributed in the circumferential direction of the sleeve 1, penetrate through the side wall of the sleeve 1 and are used for abutting against the electrode rod 15 and adjusting the verticality of the electrode rod 15. In this embodiment, three screw hole is evenly seted up to sleeve 1's circumference, and the screw hole all runs through sleeve 1 lateral wall, and the axis of screw hole is perpendicular with sleeve 1's axis, and three adjusting bolt 14 can be adjusted alone or simultaneously, rotates adjusting bolt 14, and the tip of three adjusting bolt 14 pushes up the lateral wall that leans on electrode rod 15 respectively, forms three stress point, utilizes three points to ensure electrode rod 15 and sleeve 1's axiality.

As a specific embodiment of the present invention, please refer to fig. 4, the electrode pressure measuring device further includes a plurality of adjusting rods 17. A plurality of regulation poles 17 equipartitions in sleeve 1's circumference, run through sleeve 1's lateral wall, adjust the fixed baffle 18 of establishing of one end that sleeve 1 was kept away from to pole 17, the cover is equipped with spring 16 on adjusting pole 17, spring 16 is located between baffle 18 and the sleeve 1 lateral wall, and it is fixed with baffle 18 and sleeve 1 respectively, when adjusting the lateral wall that the tip top of pole 17 leaned on electrode rod 15, spring 16 is in the extension state, to the reverse pulling baffle 18 of sleeve 1 inner chamber, thereby make baffle 18 drive adjust pole 17 and lean on electrode rod 15's lateral wall, it is three to adjust pole 17, the tip of three regulation pole 17 pushes up the lateral wall that leans on electrode rod 15 respectively, form three stress point, utilize three point to ensure electrode rod 15 and sleeve 1's.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. Electrode pressure measurement device, characterized by, includes:

the positioning assembly is arranged on the sleeve;

2. The electrode pressure measurement device of claim 1, wherein the positioning assembly comprises:

3. The electrode pressure measuring device according to claim 2, wherein the inner side wall of the tapered sleeve is provided with a non-slip pad through which a plurality of the pressing plates are passed for pressing the electrode rod.

4. The electrode pressure measurement device of claim 1, wherein the pressure detection assembly comprises:

5. The electrode pressure measuring apparatus according to claim 1, wherein a tray for placing the display device is provided at one side of the sleeve, and the tray is connected to the sleeve by a link.

6. The electrode pressure measuring device according to claim 1, wherein an installation groove communicated with the accommodating cavity is formed in the upper end surface of the sleeve, a protective shell is placed in the installation groove, and the pressure detecting assembly is arranged in the protective shell.

7. The electrode pressure measuring device according to claim 6, wherein the pressure detecting member is electrically connected to the display device through a wire, and an abdicating groove for passing through the wire is formed at one side of the mounting groove.

8. The electrode pressure measuring device according to claim 1, wherein a through hole communicating with the accommodating chamber is formed in a side wall of the sleeve, and a laser positioning instrument is mounted on the side wall of the sleeve and observes the position of the upper end surface of the electrode rod through the through hole.

9. The electrode pressure measurement device of any one of claims 1-8, further comprising: