CN216656722U

CN216656722U - Electrode detection structure for projection welding machine

Info

Publication number: CN216656722U
Application number: CN202122941501.8U
Authority: CN
Inventors: 余国联; 陈寿海
Original assignee: Taizhou Huangyan Kunpeng Automobile Co ltd
Current assignee: Taizhou Huangyan Kunpeng Automobile Co ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-06-03
Anticipated expiration: 2031-11-24

Abstract

The utility model discloses an electrode detection structure for a projection welding machine, which belongs to the technical field of projection welding machines and solves the problem of unreliable detection before work.

Description

Electrode detection structure for projection welding machine

Technical Field

The utility model relates to the technical field of projection welding machines, in particular to an electrode detection structure for a projection welding machine.

Background

At present, chinese patent No. CN201220324Y discloses a projection welding machine, which comprises a frame, an electrical part and a mechanical part, wherein the electrical part comprises a transformer communicated with an upper electrode and a lower electrode, and a cable connecting the upper electrode and the lower electrode with the transformer, and a numerical control system for regulating and controlling welding current, welding voltage and time; the mechanical part consists of an air pressurizing mechanism, a power transmission device and a cooling water system; the upper projection welding electrode and the lower projection welding electrode are of rod-shaped structures, the upper projection welding electrode is connected with a welding machine cylinder of the air pressurizing mechanism into a whole, cables for connecting the upper projection welding electrode and the lower projection welding electrode with the transformer are water-through cables, and the transformer is a water-cooled transformer.

When the structure is used, for example, a nut needs to be welded on a steel plate, the nut is provided with a connecting pin, the nut and the steel plate are placed on a projection welding lower electrode, then the projection welding upper electrode moves downwards to touch the nut, and at the moment, the nut sends hot melt at the position of the connecting pin under the power-on condition to form a welding point to complete welding.

Therefore, before the operation process, the use condition of the equipment is generally required to be detected in order to improve safety, and the detection structure is required to be designed because the manual visual observation method and the empirical judgment method are unreliable.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, at least solves the technical problems in the related technology to a certain extent, and provides an electrode detection structure for a projection welding machine, which has the advantages of intuitively detecting the working stroke process and the stress change condition of a welding spot.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides an electrode detection structure for projection welding machine, is including last electrode holder and the lower electrode holder that is used for fixed electrode, go up fixed impact seat on the electrode holder, be fixed with the stroke detector on impacting the seat, the center of impacting the seat is provided with the drift, be fixed with the work benchmark platform on the electrode holder down, the detection subject has been placed to the top of work benchmark platform, the detection subject includes hollow cylinder body, sets up in the force sensor of cylinder body below, carries on the test rod inside the cylinder body, the test rod is spacing at the middle part of cylinder body, stroke detector and force sensor connect in the controller, the controller is used for the record and shows stroke data and induction force data.

By the technical scheme, the matching condition of the stroke and the impact change of the upper electrode holder after the welding spot is melted can be simulated, so that whether the equipment runs normally or reliably can be detected, and the welding quality in the machining process is improved.

Preferably, a step structure is arranged on the inner wall of the cylinder body, a backing ring is supported on the step structure, a fixture assembly is arranged on the side wall of the cylinder body, and the fixture assembly is clamped with the two ends of the test rod.

Through the technical scheme, in order to enable the test rod to be convenient for clamping and limiting, the mode that the two ends are fixed through the fixture assembly is adopted, so that the punch impact is not interfered, and meanwhile, the operation is convenient. So that the test rod is accurately positioned.

Preferably, the fixture component comprises a moving claw penetrating through the side wall of the cylinder body and a spring sleeved at the rear end of the moving claw, a limiting groove and a through hole are formed in the side wall of the cylinder body, one end of the spring abuts against the bottom of the limiting groove, the other end of the spring abuts against the moving claw, and the rear end of the moving claw extends out of the through hole and is fixed with a limiting cap.

Through above-mentioned technical scheme, the structure of fixture subassembly adopts the movable claw to fix a position the tip of test stick, then provides elastic potential energy through the spring for the tip of test stick can be held, then owing to there is spacing cap to be in, even do not have the test stick, the movable claw also can not break away from through-hole and spacing groove, makes clamping operation mode simple and convenient.

Preferably, the bottom of cylinder body is provided with the activity groove, be equipped with the regulation seat in the activity groove, the bottom fixed force sensor of regulation seat, regulation seat and activity groove screw-thread fit.

Through above-mentioned technical scheme, in order to adjust force sensor's fixed position height, then utilize and adjust the seat and adjust, can satisfy the detection demand of different work piece heights.

Preferably, the adjusting seat is provided with a vertical column penetrating through the bottom of the cylinder body, and the center of the vertical column is provided with a hexagonal groove.

Through above-mentioned technical scheme, in order to facilitate the height of adjustment regulation seat, consequently utilize hexagonal groove cooperation hexagonal instrument, can adjust the height of adjusting the seat through rotatory stand.

Preferably, the controller comprises a signal amplifier, a data collector and a display, the signal amplifier is connected with the force sensor, the data collector is connected with the signal amplifier and the travel detector, and the display is connected with the data collector.

Through above-mentioned technical scheme, signal amplifier can avoid signal transmission in-process distortion, improves the data accuracy, then carries out synchronous collection simultaneously and handles stroke data and impulsive force data through data collection station, shows by the display and supplies the user to know directly perceivedly.

Compared with the background technology, the technical effects of the utility model are mainly reflected in the following aspects:

1. the electrode working condition of the projection welding machine can be simulated and detected before use, so that the quality of the processed electric welding is improved;

2. the operation is simple and convenient, and the operation efficiency is improved.

Drawings

FIG. 1 is a schematic structural diagram of a projection welding machine in an embodiment;

FIG. 2 is a schematic diagram of an embodiment of the electrode detecting structure;

fig. 3 is an enlarged view of a portion a in fig. 2.

Reference numerals: 1. an upper electrode mount; 2. a lower electrode holder; 3. an impact base; 31. a punch; 4. a travel detector; 5. a working reference table; 6. detecting a subject; 61. a cylinder body; 611. a step structure; 612. a backing ring; 62. a force sensor; 63. a test bar; 64. a clamp assembly; 641. a movable claw; 642. a spring; 643. a limiting groove; 644. a through hole; 645. a limiting cap; 65. a movable groove; 66. an adjusting seat; 661. a column; 662. a hexagonal groove; 7. a controller; 71. a signal amplifier; 72. a data acquisition unit; 73. a display; 8. a projection welding machine; 9. and (5) a workpiece.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in order to make the technical solution of the present invention easier to understand and understand.

Example (b):

an electrode detection structure for a projection welder 8 comprises an upper electrode holder 1 and a lower electrode holder 2 for fixing electrodes. The electrodes are mounted on the upper electrode holder 1 and the lower electrode holder 2, and then the workpiece 9 is placed on the electrodes. When the connecting pin (supporting leg) of the nut of the workpiece 9 is melted after being electrified, the connecting pin suddenly collapses, so that the electrode loses contact, and at the moment, the electrode needs to have downward moving impact and stroke continuously to keep the electrode still contacting the workpiece 9, and therefore, operation detection needs to be carried out before equipment is machined. Therefore, the motor needs to be disassembled first, and the electrode detection structure in the scheme is installed.

Specifically, this scheme adopts: an impact seat 3 is fixed on the upper electrode seat 1, and a stroke detector 4 is fixed on the impact seat 3. The travel detector 4 may be an existing hardware module such as a distance sensor. The center of the impact seat 3 is provided with a punch 31, and a working reference platform 5 is fixed on the lower electrode seat 2. The travel detector 4 can detect the distance between the travel detector and the industrial and agricultural work reference platform 5 according to the travel condition. A detection main body 6 is placed above the work reference table 5. The detection body 6 includes a hollow cylinder 61, a force sensor 62 provided below the cylinder 61, and a test rod 63 mounted inside the cylinder 61. The test rod 63 is limited in the middle of the cylinder body 61, the stroke detector 4 and the force sensor 62 are connected to the controller 7, and the controller 7 is used for recording and displaying stroke data and induction force data. The test rod 63 is a steel rod and is used for simulating the stroke and impact force change condition of the upper electrode base 1 which continuously moves downwards after the upper electrode base is broken in an impact. We can also make a small opening in the brittle strip in the middle for breaking at this point when the punch 31 hits. The force sensor 62 may be a piezoelectric crystal type sensor, but is not limited to such one, for the purpose of detecting a change in impulse force. In addition, the sensor may be sealed and insulated. Therefore, the matching condition of the stroke and the impact change of the upper electrode holder 1 after the welding spot is melted can be simulated, so that whether the equipment runs normally or reliably can be detected, and the welding quality in the machining process is improved.

Referring to fig. 2 and 3, a step structure 611 is provided on the inner wall of the cylinder 61, a backing ring 612 is supported on the step structure 611, and a clamp assembly 64 is provided on the side wall of the cylinder 61, and the clamp assembly 64 is clamped to both ends of the test bar 63. The fixture assembly 64 includes a moving claw 641 penetrating through a side wall of the cylinder body 61, and a spring 642 sleeved on a rear end of the moving claw 641, wherein a limiting groove 643 and a through hole 644 are arranged on the side wall of the cylinder body 61, one end of the spring 642 abuts against a bottom of the limiting groove 643, the other end of the spring 642 abuts against the moving claw 641, and a limiting cap 645 is fixed to the rear end of the moving claw and extends out of the through hole 644. The bottom of the cylinder body 61 is provided with a movable groove 65, an adjusting seat 66 is assembled in the movable groove 65, the bottom of the adjusting seat 66 is fixed with the force sensor 62, and the adjusting seat 66 is in threaded fit with the movable groove 65. The adjusting seat 66 is provided with a column 661 penetrating the bottom of the cylinder body 61, and a hexagonal groove 662 is provided in the center of the column 661.

The working effect is as follows, in order to enable the test rod 63 to be convenient to clamp and limit, the two ends of the test rod are fixed through the fixture assemblies 64, so that the punch 31 is not interfered, and meanwhile, the operation is convenient. So that the test stick 63 is accurately positioned. The structure of the fixture assembly 64 uses the moving jaw 641 to position the end of the test rod 63, and then provides elastic potential energy through the spring 642, so that the end of the test rod 63 can be clamped, and then due to the presence of the limiting cap 645, even if there is no test rod 63, the moving jaw 641 cannot be separated from the through hole 644 and the limiting groove 643, so that the clamping operation mode is simple.

In order to adjust the height of the fixed position of the force sensor 62, the height can be adjusted by the adjusting seat 66, so that the detection requirements of different heights of the workpiece 9 can be met.

To facilitate adjustment of the height of the adjustment base 66, the height of the adjustment base 66 can be adjusted by rotating the post 661 using the hexagonal slot 662 in conjunction with a hexagonal tool.

Finally, the controller 7 may be an intelligent device such as an industrial computer, and the like, and specifically, the controller 7 may further include a signal amplifier 71, a data collector 72 and a display 73, the signal amplifier 71 is connected to the force sensor 62, the data collector 72 is connected to the signal amplifier 71 and the stroke detector 4, and the display 73 is connected to the data collector 72. The signal amplifier 71 can avoid distortion in the signal transmission process, improve data accuracy, synchronously acquire and process stroke data and impulsive force data through the data acquisition unit 72, and display the stroke data and the impulsive force data by the display 73 for users to know visually.

The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all the technical solutions formed by equivalent substitutions or equivalent changes are within the scope of the present invention as claimed.

Claims

1. The utility model provides an electrode detection structure for projection welding machine (8), includes upper electrode holder (1) and lower electrode holder (2) that are used for fixed electrode, characterized by: go up fixed impact seat (3) on electrode holder (1), be fixed with stroke detector (4) on impact seat (3), the center of impacting seat (3) is provided with drift (31), be fixed with work reference platform (5) on electrode holder (2) down, detection subject (6) have been placed to the top of work reference platform (5), detection subject (6) include hollow cylinder body (61), set up in force sensor (62) of cylinder body (61) below, carry on test rod (63) inside cylinder body (61), test rod (63) are spacing in the middle part of cylinder body (61), and stroke detector (4) and force sensor (62) are connected in controller (7), controller (7) are used for the record and show stroke data and induced stress data.

2. The electrode detecting structure for a projection welder (8) as set forth in claim 1, characterized in that: the testing device is characterized in that a step structure (611) is arranged on the inner wall of the cylinder body (61), a backing ring (612) is supported on the step structure (611), a clamp assembly (64) is arranged on the side wall of the cylinder body (61), and the clamp assembly (64) is clamped with two ends of the testing rod (63).

3. The electrode detecting structure for a projection welder (8) as set forth in claim 2, characterized in that: the fixture assembly (64) comprises a moving claw (641) penetrating through the side wall of the cylinder body (61) and a spring (642) sleeved at the rear end of the moving claw (641), a limiting groove (643) and a through hole (644) are formed in the side wall of the cylinder body (61), one end of the spring (642) is abutted against the bottom of the limiting groove (643), the other end of the spring (642) is abutted against the moving claw (641), and the rear end of the moving claw extends out of the through hole (644) and is fixed with a limiting cap (645).

4. The electrode detecting structure for a projection welder (8) as set forth in claim 1, characterized in that: the bottom of cylinder body (61) is provided with activity groove (65), be equipped with in activity groove (65) and adjust seat (66), adjust the fixed force sensor (62) in bottom of seat (66), adjust seat (66) and activity groove (65) screw-thread fit.

5. The electrode detecting structure for a projection welder (8) as set forth in claim 4, characterized in that: the adjusting seat (66) is provided with a vertical column (661) penetrating through the bottom of the cylinder body (61), and the center of the vertical column (661) is provided with a hexagonal groove (662).

6. The electrode detecting structure for a projection welder (8) as set forth in claim 1, characterized in that: the controller (7) comprises a signal amplifier (71), a data acquisition unit (72) and a display (73), wherein the signal amplifier (71) is connected with the force sensor (62), the data acquisition unit (72) is connected with the signal amplifier (71) and the stroke detector (4), and the display (73) is connected with the data acquisition unit (72).