CN213469944U

CN213469944U - Electrode grinding compensation detection device for automatic projection welding workstation

Info

Publication number: CN213469944U
Application number: CN202022074968.2U
Authority: CN
Inventors: 王帆; 赵中秋; 陈洪杰; 田增泰; 史涛
Original assignee: Tianjin 707 Hi Tech Co Ltd
Current assignee: Tianjin 707 Hi Tech Co Ltd
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2021-06-18
Anticipated expiration: 2030-09-21

Abstract

The utility model provides an electrode coping compensation detection device for automatic projection welding workstation, including the electrode, the locating pin, the connecting rod, a centre gripping section of thick bamboo, displacement sensor, the electrode is fixed at centre gripping section of thick bamboo top, the connecting rod sets up inside a centre gripping section of thick bamboo, connecting rod and centre gripping section of thick bamboo sliding connection, connecting rod top and locating pin fixed connection, the locating pin stretches out locating pin upper portion through the through-hole that the electrode was reserved, the locating pin overcoat has the calibration piece, be equipped with on the locating pin and be used for carrying out spacing first rake to the calibration piece, the connecting rod bottom links to each other with displacement sensor's test rod tip, centre gripping bobbin base portion is fixed with the support, displacement sensor. A electrode coping compensation detection device for automatic projection welding workstation has solved projection welding workstation bottom electrode terminal surface and has descended the problem that can't guarantee welding quality stable unanimity.

Description

Electrode grinding compensation detection device for automatic projection welding workstation

Technical Field

The utility model belongs to automatic projection welding equipment field especially relates to an electrode coping compensation detection device for automatic projection welding workstation.

Background

The automatic projection welding workstation is a process for grabbing parts by an industrial robot with a gripper, conveying nuts, automatically feeding and welding and fixing the nuts on specific hole positions of the parts by using a spot welding principle. After a certain number of workpieces are welded, the electrode surface becomes uneven, the welding quality is reduced, and the electrode needs to be polished. And the end face of the lower electrode can be continuously reduced along with the increase of the coping times. At the moment, the position of the workpiece is automatically adjusted according to the grinding amount of the electrode by the robot, the gap between the workpiece and the end face of the lower electrode is increased, so that the workpiece is deformed or the welding quality is seriously reduced, a large number of unqualified products are produced, and once abnormity occurs, the repair method is complex, the repair time is long, the levels of maintainers are uneven, and the stability and consistency of the welding quality cannot be ensured.

Disclosure of Invention

In view of the above, the invention provides an electrode grinding compensation detection device for an automatic projection welding workstation, so as to solve the problem that the welding quality cannot be guaranteed to be stable and consistent due to the reduction of the end face of an electrode under the projection welding workstation.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides an electrode coping compensation detection device for automatic projection welding workstation, including the electrode, the locating pin, the connecting rod, a centre gripping section of thick bamboo, displacement sensor, the electrode is fixed at centre gripping section of thick bamboo top, the connecting rod sets up inside a centre gripping section of thick bamboo, connecting rod and centre gripping section of thick bamboo sliding connection, connecting rod top and locating pin fixed connection, the locating pin stretches out locating pin upper portion through the through-hole that the electrode was reserved, the locating pin overcoat has the calibration piece, be equipped with on the locating pin and be used for carrying out spacing first rake to the calibration piece, the connecting rod bottom links to each other with displacement sensor's test bar tip, centre gripping section of thick bamboo bottom is fixed with the support, displacement sensor installs on.

Further, the support includes mounting groove, mounting panel, centre gripping bobbin base portion outside and the inboard fixed connection of mounting groove, one side and mounting panel fixed connection of mounting groove bottom, displacement sensor fix the mounting panel and be close to one side of connecting rod, displacement sensor's measuring staff sets up, and the through-hole that the tip was reserved through the mounting groove runs through in the mounting groove, and displacement sensor's measuring staff top links to each other with the connecting rod.

Further, the connecting rod bottom is fixed with the sleeve, displacement sensor's measuring rod tip is fixed with the lug that corresponds with the sleeve through the connecting block, and inside the lug stretched into the sleeve, the sleeve outside cover had the elastic component, and the elastic component setting is outside sleeve, connecting block and displacement sensor's the measuring rod that is located between connecting rod and the support.

Further, the locating pin includes plug, gag lever post, and the plug is fixed at the gag lever post top, is provided with between plug and the gag lever post first rake, gag lever post bottom are fixed with the installation piece, and open the installation piece bottom has the recess, and the connecting rod top is fixed with the inserted bar that corresponds with the recess, the inserted bar is connected with the recess plug-in, and it has the through-hole that corresponds with the locating pin to open on the electrode, and the electrode outside all is equipped with the screw thread with a centre gripping section of thick bamboo inside, and the electrode passes through screw thread and a centre gripping section of thick bamboo threaded connection.

Furthermore, a through hole corresponding to the plug is formed in the calibration block, and a second inclined part corresponding to the first inclined part is formed at the bottom of the calibration block.

Furthermore, a water-cooling ring is further installed at the upper end of the clamping cylinder and used for cooling the electrode, and the water-cooling ring is arranged on the outer side of the electrode.

Furthermore, an annular sealing ring is fixed between the water cooling ring and the clamping cylinder.

Furthermore, a bushing for insulation is sleeved between the clamping cylinder and the connecting rod, the bushing is fixedly connected with the inner wall of the clamping cylinder, and the bushing is connected with the connecting rod in a sliding manner.

Compared with the prior art, the utility model discloses following advantage has:

(1) the utility model provides an electrode coping compensation detection device for automatic projection welding workstation provides calibration piece and locating pin cooperation setting, links to each other with displacement sensor through the connecting rod, the coping volume of detection bottom electrode that can be accurate.

(2) The elastic piece can jack the connecting rod to an initial position after the electrode is pressed down to detect, so that the positioning pin is reset.

(3) The electrode is in threaded connection with the clamping cylinder, the positioning pin is in plug-in connection with the electrode and the connecting rod, and the connecting rod is in plug-in connection with the lug, so that the assembly and disassembly are simple and convenient.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic cross-sectional view of an electrode grinding compensation detecting device for an automatic projection welding workstation according to an embodiment of the present invention;

FIG. 2 is a schematic view of an automatic projection welding workstation according to an embodiment of the present invention;

fig. 3 is a schematic view illustrating an installation of the calibration block according to an embodiment of the present invention;

fig. 4 is a schematic diagram of detecting a pressing calibration block of an electrode in projection welding according to an embodiment of the present invention.

Description of reference numerals:

1-an electrode; 2-positioning pins; 21-a plug; 22-a limiting rod; 23-a first inclined portion; 24-a mounting block; 25-a groove; 3-a connecting rod; 31-a plunger; 32-a sleeve; 4-a clamping cylinder; 5-a displacement sensor; 51-connecting blocks; 52-a bump; 6-calibration block; 7-a scaffold; 71-a mounting groove; 72-a mounting plate; 8-an elastic member; 9-projection welding an upper electrode; 10-automatic projection welding workstation; 11-a liner; 12-a water-cooled ring; 121-sealing ring.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1, fig. 2, fig. 3, a 1 coping compensation detection device of electrode for automatic projection welding workstation 10, including electrode 1, locating pin 2, connecting rod 3, a clamping cylinder 4, displacement sensor 5, electrode 1 is fixed at a clamping cylinder 4 top, connecting rod 3 sets up inside a clamping cylinder 4, connecting rod 3 and a clamping cylinder 4 sliding connection, connecting rod 3 top and locating pin 2 fixed connection, locating pin 2 stretches out to 2 upper portions of locating pin through the through-hole that electrode 1 reserved, the cover has calibration piece 6 on the locating pin 2, be equipped with on the locating pin 2 and be used for carrying out spacing first rake 23 to calibration piece 6, connecting rod 3 bottom links to each other with displacement sensor 5's detection pole tip, clamping cylinder 4 bottom is fixed with support 7, displacement sensor 5 installs on support 7. The clamping cylinder 4 is fixed on the automatic projection welding workstation 10, the electrode 1 is used as a lower electrode 1, the displacement sensor 5 is electrically connected with a PLC (programmable logic controller), and the PLC adopts but is not limited to Siemens 1500.

As shown in fig. 1, the support 7 includes a mounting groove 71 and a mounting plate 72, the outside of the bottom of the clamping cylinder 4 is fixedly connected with the inside of the mounting groove 71, one side of the bottom of the mounting groove 71 is fixedly connected with the mounting plate 72, the displacement sensor 5 is fixed on the mounting plate 72 and close to one side of the connecting rod 3, the detection rod of the displacement sensor 5 is arranged upwards, the end part of the detection rod is reserved through the mounting groove 71, the through hole penetrates through the mounting groove 71, and the top of the detection rod of the displacement sensor 5 is connected with.

As shown in fig. 1, a sleeve 32 is fixed at the bottom of the connecting rod 3, a protrusion 52 corresponding to the sleeve 32 is fixed at the end of the detection rod of the displacement sensor 5 through a connection block 51, the protrusion 52 extends into the sleeve 32, an elastic member 8 is sleeved outside the sleeve 32, and the elastic member 8 is arranged outside the sleeve 32, the connection block 51 and the detection rod of the displacement sensor 5 between the connecting rod 3 and the bracket 7. The elastic member 8 can jack the connection rod 3 to an initial position after the electrode 1 completes the press detection, thereby resetting the positioning pin 2.

As shown in fig. 1, the positioning pin 2 includes a plug 21 and a limiting rod 22, the plug 21 is fixed on the top of the limiting rod 22, a first inclined portion 23 is arranged between the plug 21 and the limiting rod 22, an installation block 24 is fixed on the bottom of the limiting rod 22, a groove 25 is formed in the bottom of the installation block 24, an insertion rod 31 corresponding to the groove 25 is fixed on the top of the connecting rod 3, the insertion rod 31 is connected with the groove 25 in a plugging manner, a through hole corresponding to the positioning pin 2 is formed in the electrode 1, threads are arranged on the outside of the electrode 1 and the inside of the clamping cylinder 4, and the electrode 1 is in threaded connection with the clamping cylinder 4 through the threads.

As shown in fig. 1, calibration block 6 has a through hole corresponding to plug 21, and the bottom of calibration block 6 has a second inclined portion corresponding to first inclined portion 23.

As shown in fig. 1, a water cooling ring 12 is further installed at the upper end of the clamping cylinder 4, the water cooling ring 12 is used for cooling the electrode 1, and the water cooling ring 12 is arranged outside the electrode 1.

As shown in fig. 1, an annular sealing ring 121 is further fixed between the water cooling ring 12 and the clamping cylinder 4.

As shown in fig. 1, a bushing 11 for insulation is sleeved between the clamping cylinder 4 and the connecting rod 3, the bushing 11 is fixedly connected with the inner wall of the clamping cylinder 4, and the bushing 11 is slidably connected with the connecting rod 3. Bushing 11 gets oilless bush 11 for insulating material, and bushing 11 still possesses and carries out the spacing function of horizontal direction to connecting rod 3, makes 5 testing results of displacement sensor more accurate.

As shown in fig. 1, 2, 3 and 4, before welding, a calibration block 6 is placed on the positioning pin 2, the calibration block 6 is a cylindrical hole with a middle through which the positioning pin 2 can penetrate, and the calibration block 6 can be automatically placed by a robot hand or by using an air cylinder mechanism. When the projection welding upper electrode 9 is pressed down, the lower part of the calibration block 6 is contacted with the end face of the lower electrode 1, at the moment, the calibration block 6 drives the positioning pin 2 to descend, the displacement sensor 5 can identify that the descending distance is H1, and data is transmitted to the PLC controller to be counted as a calibration value. After the end face of the lower electrode 1 is ground, the grinding amount is H2. And (3) putting the calibration block 6, pressing the projection welding upper electrode 9 downwards, identifying that the descending distance is H3 by the displacement sensor 5, and transmitting data to the PLC, wherein the PLC control program can calculate the difference H4 to be H3-H1 and the grinding amount H2 to be H4 through the deviation of the displacement amount. The PLC transmits the H2 value to the robot controller, so that the robot automatically compensates the displacement, and the coping compensation is realized.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electrode (1) coping compensation detection device for an automatic projection welding workstation (10), characterized in that: comprises an electrode (1), a positioning pin (2) and a connecting rod (3), a centre gripping section of thick bamboo (4), displacement sensor (5), electrode (1) is fixed at a centre gripping section of thick bamboo (4) top, connecting rod (3) set up inside a centre gripping section of thick bamboo (4), connecting rod (3) and a centre gripping section of thick bamboo (4) sliding connection, connecting rod (3) top and locating pin (2) fixed connection, locating pin (2) stretch out locating pin (2) upper portion through the through-hole that electrode (1) was reserved, the cover has calibration piece (6) on locating pin (2), be equipped with on locating pin (2) and be used for carrying out spacing first rake (23) to calibration piece (6), connecting rod (3) bottom links to each other with the detection pole tip of displacement sensor (5), a centre gripping section of thick bamboo (4) bottom is fixed with support (7), displacement sensor (5) are installed on support (7), displacement sensor (5) and PLC controller electric connection.

2. Electrode (1) thinning compensation detection device for automatic projection welding stations (10) according to claim 1, characterized in that: support (7) are including mounting groove (71), mounting panel (72), a centre gripping section of thick bamboo (4) bottom outside and the inboard fixed connection of mounting groove (71), one side and mounting panel (72) fixed connection of mounting groove (71) bottom, and displacement sensor (5) are fixed and are close to mounting panel (72) one side of connecting rod (3), the measuring stick of displacement sensor (5) sets up, and the tip runs through in mounting groove (71) through the through-hole that mounting groove (71) were reserved, and the measuring stick top of displacement sensor (5) links to each other with connecting rod (3).

3. Electrode (1) thinning compensation detection device for automatic projection welding stations (10) according to claim 1, characterized in that: connecting rod (3) bottom is fixed with sleeve (32), the detection pole tip of displacement sensor (5) is fixed with lug (52) that correspond with sleeve (32) through connecting block (51), and inside lug (52) stretched into sleeve (32), the outside cover of sleeve (32) has elastic component (8), and elastic component (8) set up the detection pole outside at sleeve (32), connecting block (51) and displacement sensor (5) that are located between connecting rod (3) and support (7).

4. Electrode (1) thinning compensation detection device for automatic projection welding stations (10) according to claim 1, characterized in that: locating pin (2) are including plug (21), gag lever post (22), and plug (21) are fixed at gag lever post (22) top, are provided with between plug (21) and gag lever post (22) first rake (23), gag lever post (22) bottom is fixed with installation piece (24), and open bottom installation piece (24) has recess (25), and connecting rod (3) top is fixed with inserted bar (31) that correspond with recess (25), inserted bar (31) and recess (25) plug-in are connected, and it has the through-hole that corresponds with locating pin (2) to open on electrode (1), and electrode (1) outside and a centre gripping section of thick bamboo (4) inside all are equipped with the screw thread, and electrode (1) are through screw thread and a centre gripping section of thick bamboo (4) threaded connection.

5. Electrode (1) thinning compensation detection device for automatic projection welding stations (10) according to claim 4, characterized in that: the calibration block (6) is provided with a through hole corresponding to the plug (21), and the bottom of the calibration block (6) is provided with a second inclined part corresponding to the first inclined part (23).

6. Electrode (1) thinning compensation detection device for automatic projection welding stations (10) according to claim 1, characterized in that: the upper end of the clamping cylinder (4) is also provided with a water cooling ring (12), the water cooling ring (12) is used for cooling the electrode (1), and the water cooling ring (12) is arranged on the outer side of the electrode (1).

7. Electrode (1) thinning compensation detection device for automatic projection welding stations (10) according to claim 6, characterized in that: an annular sealing ring (121) is further fixed between the water cooling ring (12) and the clamping cylinder (4).

8. Electrode (1) thinning compensation detection device for automatic projection welding stations (10) according to claim 1, characterized in that: a bushing (11) used for insulation is sleeved between the clamping cylinder (4) and the connecting rod (3), the bushing (11) is fixedly connected with the inner wall of the clamping cylinder (4), and the bushing (11) is connected with the connecting rod (3) in a sliding mode.