阅读说明：本技术 一种气控焊装夹具零件的焊接质检装置 (Welding quality inspection device for pneumatic control welding fixture part ) 是由 肖小敏 王国杰 周向阳 吴斌 吴伟深 王辉 全美端 梁益贵 于 2020-11-20 设计创作，主要内容包括：本发明提供一种气控焊装夹具零件的焊接质检装置,包括：承载板、检测探头、顶杆、中空套筒、弹簧、压头和机械气阀；所述机械气阀与中空套筒固定在承载板上,所述弹簧布置在中空套筒内,所述弹簧与中空套筒均穿套在顶杆上,所述顶杆在中空套筒内还固定布置有环状压块；所述顶杆的一端伸出中空套筒与检测探头固定连接,所述顶杆的另一端伸出中空套筒与压头固定连接,所述压头与机械气阀旋转连接,所述机械气阀还与气路系统连接；本发明提供的气控焊装夹具零件的焊接质检装置,使用范围广,通用性好,能够实现对螺母、螺柱、螺杆、小支架等小零件是否漏焊或焊偏的检测,配合气路系统的通断提示问题零件,提升使用安全性及稳定性。(The invention provides a welding quality inspection device for a pneumatic welding fixture part, which comprises: the device comprises a bearing plate, a detection probe, a mandril, a hollow sleeve, a spring, a pressure head and a mechanical air valve; the mechanical air valve and the hollow sleeve are fixed on the bearing plate, the spring is arranged in the hollow sleeve, the spring and the hollow sleeve are sleeved on the ejector rod in a penetrating manner, and the ejector rod is also fixedly provided with an annular pressing block in the hollow sleeve; one end of the ejector rod extends out of the hollow sleeve and is fixedly connected with the detection probe, the other end of the ejector rod extends out of the hollow sleeve and is fixedly connected with a pressure head, the pressure head is rotatably connected with a mechanical air valve, and the mechanical air valve is also connected with an air path system; the welding quality detection device for the pneumatic welding fixture part provided by the invention is wide in application range and good in universality, can detect whether small parts such as nuts, studs, screws, small supports and the like are welded in a missing mode or are welded in a deviated mode, prompts problem parts by matching with on-off of an air path system, and improves the use safety and stability.)

1. The utility model provides a welding quality inspection device of gas accuse welding jig part which characterized in that includes: the device comprises a bearing plate, a detection probe, a mandril, a hollow sleeve, a spring, a pressure head and a mechanical air valve; the mechanical air valve and the hollow sleeve are fixed on the bearing plate, the spring is arranged in the hollow sleeve, the spring and the hollow sleeve are sleeved on the ejector rod in a penetrating manner, and the ejector rod is also fixedly provided with an annular pressing block in the hollow sleeve; one end of the ejector rod extends out of the hollow sleeve and is fixedly connected with the detection probe, the other end of the ejector rod extends out of the hollow sleeve and is fixedly connected with the pressure head, the pressure head is rotatably connected with the mechanical air valve, an air path switch is arranged on the mechanical air valve and is in contact connection with the pressure head, and the mechanical air valve is further connected with an air path system.

2. The weld quality inspection apparatus for pneumatically controlled weld fixture parts according to claim 1, further comprising: the support is fixedly connected with the mechanical air valve, and the pin shaft penetrates through one end of the pressure head and then is rotatably connected with the support.

3. The welding quality inspection device for gas welding jig parts according to claim 1 or 2, characterized in that: the detection probe is a gasket or a positioning pin.

4. The weld quality inspection apparatus for pneumatically controlled weld fixture parts according to claim 3, further comprising: the tool comprises a tool base, wherein a screw hole is further formed in the bearing plate, and the bearing plate is fixed on the tool base through the screw hole.

5. The welding quality inspection device for parts of a gas control welding jig according to claim 3, characterized in that: the hollow sleeve and the bearing plate are fixed through bolts or welded.

6. The weld quality inspection apparatus for pneumatically controlled weld fixture parts according to claim 3, wherein the gas path system further comprises: the device comprises a compressed air source, a five-port two-position air valve, a clamping valve closing button, a clamping valve opening button and a clamping cylinder; the compressed air source is respectively communicated with the air inlet end P of the five-port two-position air valve, the air inlet end P of the air clamping valve closing button and the air inlet end P of the air clamping valve opening button through pipelines; the switching-on control port of the five-port two-position air valve is communicated with the control end A end of the clamping valve opening button, and the switching-off control port of the five-port two-position air valve is communicated with the control end A end of the clamping valve closing button; the first gas path interface A end of the five-port two-position gas valve is communicated with the clamping end of the clamping cylinder through a series mechanical gas valve, the first gas path interface A end of the five-port two-position gas valve is communicated with the gas inlet P end of the mechanical gas valve, the gas path interface A end of the mechanical gas valve is connected with the clamping end of the clamping cylinder, and the second gas path interface B end of the five-port two-position gas valve is directly communicated with the clamping end of the clamping cylinder through a pipeline.

7. The welding quality inspection device for gas welding jig parts according to claim 1 or 6, characterized in that: the mechanical air valve is a three-port two-position air control valve.

Technical Field

The invention belongs to the technical field of detection, and particularly relates to a welding quality detection device for a part of a pneumatic welding fixture.

Background

A plurality of nuts, studs and small supports are welded on an automobile body, and in a manual welding line, workers occasionally neglect to install the supports and the nuts, and due to the fact that no good mistake proofing technology exists, the neglected welding defective parts flow into a customer end to cause adverse effects and waste. In the manual welding line, some of the welding lines adopt an electronic detection error-proofing mode, and the mode is relatively low in safety and low in service life of electronic elements due to uncertain factors of people and relatively strong electromagnetic field of a manual welding clamp; some direct purchase mechanical valve detect the work piece, but the finding is small, and the contact surface is little, often can not detect the part of leaking welding, often collides mechanical valve lever during the part transport moreover and leads to failing.

In the existing detection scheme, a nut stud is manually drawn and detected at an offline inspection station, but the problems that the number of part nuts is large, the labor intensity of manual welding is high, the number of workers for a production line is large, and the labor cost is increased are solved; the small support is directly detected by the mechanical valve, the mechanical valve is connected with the gas circuit system, when the detected workpiece presses the mechanical valve rod, the mechanical valve is ventilated, the gas circuit system can normally operate, when the detected workpiece is welded in a leakage mode, the rod bounces, the mechanical valve is disconnected, and the gas circuit system cannot normally operate, so that staff can be reminded of finding that the part is welded in a leakage mode. But this scheme mistake proofing fault rate is higher, can't detect the nut of discernment part inner chamber.

For example, chinese patent publication No. CN106556540A discloses a projection welding nut welding strength detection tool, which includes: the device comprises a torque wrench, a switching sleeve and at least one first limiting body; the torque wrench comprises a torque arm and a connector, wherein a torque display part is fixedly arranged at one end of the torque arm and is used for displaying the torque applied to the projection welding nut to be tested, the connector is fixed at the other end of the torque arm and forms an L-shaped structure with the torque arm, and at least one first limiting groove is formed in the outer wall of the connector; the adapter sleeve is arranged between the torque wrench and the projection welding nut to be detected and is used for connecting the torque wrench and the projection welding nut to be detected; it can be seen that, the limiting groove in the torque wrench is mainly utilized for detection in the technology, the detection and judgment labor intensity is high, and due to the fact that a plurality of inspection items of vehicle body parts exist, detection omission and false detection exist, and the quality problem that the nut welding omission occasionally still flows into a client end to cause scrapping of the whole vehicle is solved.

Disclosure of Invention

The invention aims to provide a welding quality detection device for a pneumatic control welding fixture part, which aims to detect whether small parts such as nuts, studs, screws, small supports and the like are welded in a missing mode or are welded in a deviated mode, and the detection device is matched with on-off prompting problem parts of an air path system to improve the use safety and stability.

In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:

the invention provides a welding quality inspection device for a pneumatic welding fixture part, which comprises:

the device comprises a bearing plate, a detection probe, a mandril, a hollow sleeve, a spring, a pressure head and a mechanical air valve; the mechanical air valve and the hollow sleeve are fixed on the bearing plate, the spring is arranged in the hollow sleeve, the spring and the hollow sleeve are sleeved on the ejector rod in a penetrating manner, and the ejector rod is also fixedly provided with an annular pressing block in the hollow sleeve; one end of the ejector rod extends out of the hollow sleeve and is fixedly connected with the detection probe, the other end of the ejector rod extends out of the hollow sleeve and is fixedly connected with the pressure head, the pressure head is rotatably connected with the mechanical air valve, an air path switch is arranged on the mechanical air valve and is in contact connection with the pressure head, and the mechanical air valve is further connected with an air path system.

As a further improvement of the invention, the method also comprises the following steps: the support is fixedly connected with the mechanical air valve, and the pin shaft penetrates through one end of the pressure head and then is rotatably connected with the support.

As a further improvement of the invention, the detection probe is a gasket or a positioning pin.

As a further improvement of the invention, the method also comprises the following steps: the tool comprises a tool base, wherein a screw hole is further formed in the bearing plate, and the bearing plate is fixed on the tool base through the screw hole.

As a further improvement of the invention, the hollow sleeve and the bearing plate are fixed by bolts or welding.

As a further improvement of the present invention, the gas path system further includes: the device comprises a compressed air source, a five-port two-position air valve, a clamping valve closing button, a clamping valve opening button and a clamping cylinder; the compressed air source is respectively communicated with the air inlet end P of the five-port two-position air valve, the air inlet end P of the air clamping valve closing button and the air inlet end P of the air clamping valve opening button through pipelines; the switching-on control port of the five-port two-position air valve is communicated with the control end A end of the clamping valve opening button, and the switching-off control port of the five-port two-position air valve is communicated with the control end A end of the clamping valve closing button; the first gas path interface A end of the five-port two-position gas valve is communicated with the clamping end of the clamping cylinder through a series mechanical gas valve, the first gas path interface A end of the five-port two-position gas valve is communicated with the gas inlet P end of the mechanical gas valve, the gas path interface A end of the mechanical gas valve is connected with the clamping end of the clamping cylinder, and the second gas path interface B end of the five-port two-position gas valve is directly communicated with the clamping end of the clamping cylinder through a pipeline.

As a further improvement of the invention, the mechanical air valve is a three-port two-position air control valve.

The invention has the advantages that:

according to the welding quality detection device for the pneumatic control welding fixture part, the detection probe drives the spring to stretch and retract so as to transmit information to the mechanical air valve, so that the action of the air passage is controlled, and the purpose of preventing the part from being mistakenly detected is achieved; the detection probe can detect the small support and the screw rod and can also detect the welded nut in the inner cavity of the part, so the mechanism has wide application range and good universality. The protection designs such as this mechanism cavity sleeve, loading board have the anticollision effect, and is not fragile, long service life, and stability is good, and the maintenance cost is low.

Drawings

FIG. 1 is a front view of a welding quality inspection apparatus according to the present invention;

FIG. 2 is a schematic cross-sectional view taken along A-A of FIG. 1;

FIG. 3 is a schematic structural view of a locating pin according to the present invention;

FIG. 4 is a schematic view of a welding quality inspection apparatus for inspecting a small rack according to the present invention;

FIG. 5 is a schematic view of a welding quality inspection apparatus for inspecting nuts according to the present invention;

FIG. 6 is a schematic view of the welding quality inspection device of the present invention mounted on a tool base;

fig. 7 is a block diagram of the gas circuit system according to the present invention.

In the figure: 101-a bearing plate, 102-a detection probe, 103-a top rod, 1031-an annular pressing block, 104-a hollow sleeve, 1041-a spring, 105-a pressure head, 106-a pin shaft, 107-a support, 108-a mechanical air valve, 1081-an air path switch, 109-a screw hole, 201-a part to be detected, 202-a tool base, 301-a compressed air source, 302-a five-port two-position air valve, 303-a clamping air valve closing button, 304-a clamping air valve opening button and 305-a clamping air cylinder.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail by embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The embodiment of the invention provides a welding quality detection device for parts of a pneumatic welding fixture, which comprises the following components as shown in figures 1 and 2: the device comprises a bearing plate 101, a detection probe 102, a top rod 103, a hollow sleeve 104, a spring 1041, a pressure head 105 and a mechanical air valve 108; the mechanical air valve 108 and the hollow sleeve 104 are fixed on the bearing plate 101, the spring 1041 is arranged in the hollow sleeve 104, the spring 1041 and the hollow sleeve 104 are sleeved on the ejector rod 103 in a penetrating manner, the ejector rod 103 is also fixedly provided with an annular pressing block 1031 in the hollow sleeve 104, and therefore, when the ejector rod 103 moves in the hollow sleeve 104, the annular pressing block 1031 can compress the spring 1041; one end of the ejector rod 103 extends out of the hollow sleeve 104 to be fixedly connected with the detection probe 102, the other end of the ejector rod 103 extends out of the hollow sleeve 104 to be fixedly connected with the pressure head 105, the pressure head 105 is rotatably connected with the mechanical air valve 108, an air path switch 1081 is arranged on the mechanical air valve 108, the air path switch 1081 is in contact connection with the pressure head 105, and the mechanical air valve 108 is also connected with an air path system, so that when the detection probe 102 detects that the part 201 to be detected is not welded, the part 201 to be detected presses the detection probe 102, the detection probe 102 drives the ejector rod 103 to compress the spring 1041 and enables the pressure head 105 to contact the air path switch 1081 of the mechanical air valve 108, the air path of the mechanical air valve 108 is switched on, the air path system normally works, after the part 201 to be detected is worked out, the spring 1041 rebounds to force the pressure; when the part 201 to be detected has missing welding or welding deviation, the detection probe 102 cannot be matched with the part 201 to be detected, and the ejector rod 103 cannot drive the pressure head 105 to contact the air path switch 1081 of the mechanical air valve 108 under the action of the spring 1041, so that the air path system is in an open circuit state.

In an embodiment, with continued reference to fig. 1, in the rotation connection manner between the pressure head 105 and the mechanical air valve 108, the support 107 and the pin 106 may be used to implement the rotation connection, the support 107 and the mechanical air valve 108 are fixedly connected, the pin 106 penetrates through one end of the pressure head 105 and then is rotatably connected to the support 107, and the pressure head 105 and the pin 106 may be fixedly connected or not fixedly connected.

In one embodiment, with continued reference to fig. 1, to inspect the protruding parts such as the small bracket, the screw, etc., the inspection probe 102 may employ a gasket, as shown in fig. 4, which may be better used to mate with the protruding parts such as the small bracket, etc.; as shown in fig. 3, the inspection probe 102 may also be a positioning pin for inspecting female parts such as nuts, as shown in fig. 5, which is preferably used to mate with female parts such as nuts.

In some embodiments, as shown in fig. 6, in order to mount and fix the welding quality inspection device, a fixture base 202 may be used, and the bearing plate 101 may be fixed on the fixture base 202 through the screw holes 109 by providing the screw holes 109 on the bearing plate 101.

In some embodiments, the hollow sleeve 104 is bolted or welded to the carrier plate 101.

In some embodiments, as shown in fig. 7, the air path system further includes: a compressed air source 301, a five-port two-position air valve 302, a clamping air valve closing button 303, a clamping air valve opening button 304 and a clamping air cylinder 305; the compressed air source 301 is respectively communicated with the air inlet end P of the five-port two-position air valve 302, the air inlet end P of the air clamping valve closing button 303 and the air inlet end P of the air clamping valve opening button 304 through pipelines; the connection control port of the five-port two-position air valve 302 is communicated with the control end A end of the clamp opening air valve button 304, and the disconnection control port of the five-port two-position air valve 302 is communicated with the control end A end of the clamp closing air valve button 303; the first air path interface A end of the five-port two-position air valve 302 is communicated with the clamping end of the clamping cylinder 305 through a series mechanical air valve 108, the air inlet end P end of the mechanical air valve 108 is connected with the first air path interface A end of the five-port two-position air valve 302, and the air path interface A end of the mechanical air valve 108 is connected with the clamping end of the clamping cylinder 305; the second gas path interface B end of the five-port two-position gas valve 302 is directly communicated with the opening end of the clamping cylinder 305 through a pipeline; therefore, when the clamp needs to be closed, the clamp closing air valve button 303 is triggered first, the end A of the first air channel interface of the five-port two-position air valve 302 is ventilated, the clamp closing step of the clamp cylinder 305 is controlled by the mechanical air valve 108, as shown in fig. 1, when the air channel switch 1081 is pressed to enable the air channel of the mechanical air valve 108 to be connected, the clamp cylinder 305 in the air channel system normally works, and when the air channel switch 1081 is disconnected to enable the air channel of the mechanical air valve 108 to be disconnected, the clamp closing step of the clamp cylinder 305 in the air channel system does not work; when the clamp needs to be opened, the clamp opening air valve button 304 is triggered, the second air path interface B end of the five-port two-position air valve 302 is ventilated, and the clamp air cylinder 305 can be normally opened; the gas path system can judge whether the part 201 to be detected is welded in a missing mode according to the working state of the clamping cylinder 305.

In some embodiments, the mechanical air valve 108 is a three port, two position air controlled valve.

Reference in the specification to "some embodiments," "one embodiment," or "an embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in some embodiments," "in one embodiment," or "in an embodiment," or the like, in various places throughout this specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Thus, a particular feature, structure, or characteristic illustrated or described in connection with one embodiment may be combined, in whole or in part, with a feature, structure, or characteristic of one or more other embodiments without limitation, as long as the combination is not logical or operational. Additionally, the various elements of the drawings of the present application are merely schematic illustrations and are not drawn to scale.

Having thus described several aspects of at least one embodiment of this invention, it is to be appreciated various alterations, modifications, and improvements will readily occur to those skilled in the art. Such alterations, modifications, and improvements are intended to be within the spirit and scope of the invention.