Automatic assembly equipment for oxygen sensor protective cap

Abstract

The utility model belongs to the technical field of oxygen sensor production equipment, and particularly relates to oxygen sensor protective cap automatic assembling equipment which comprises an index plate, a plurality of component tools are installed on the outer side of the index plate at equal intervals in a surrounding mode, and sensor clamping seats and protective cap clamping seats are arranged on the component tools. A feeding area, a cap mounting area, a welding area and a discharging area are arranged on the outer side of the index plate corresponding to the component tool in a surrounding mode, the cap mounting area comprises a protective cap placer, and the welding area comprises a lifting clamping jaw and a welding gun module. The oxygen sensor protective cap provided by the utility model can replace manpower to assemble and weld the protective cap, so that the labor cost is saved, the continuous operation stability is high, the product quality and the production efficiency can be effectively improved, and the oxygen sensor protective cap has remarkable practical significance.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen sensor production equipment, in particular to automatic assembly equipment for oxygen sensor protection caps. Background Art

[0002] The oxygen sensor used in fuel vehicles is a sensor element used before and after the three-way catalytic converter of electronic fuel injection vehicles to improve vehicle exhaust emissions, save fuel, and improve economy. Its working principle is to monitor the concentration of oxygen in the exhaust gas and convert it into an electrical signal to feed back to the ECU control unit, so as to control the fuel injection amount to achieve the ideal air-fuel ratio as much as possible, so as to make the fuel burn more fully, improve exhaust emissions, save fuel, and improve economy.

[0003] The structure of an oxygen sensor generally includes a hexagonal base, a copper washer, a front ceramic, a sealing powder, and a riveted ceramic that are pressed together, and the oxygen sensor runs through all of the above components. The front end of the oxygen sensor protrudes from the main structure to fully contact the exhaust gas of the car, so a protective cap with a through hole needs to be installed on the outside of the protruding front end of the oxygen sensor. In the traditional assembly process, the operation of installing the protective cap is done manually by workers, which no longer meets the current automated production needs. Utility Model Content

[0004] In order to solve the problem that in the stamping step of the traditional oxygen sensor production process, workers need to hold the product and put it into the stamping vertical mold, align it with the stamping mold in the stamping static mold for stamping, the oxygen sensor cannot be firmly positioned during the process, the product cannot be accurately coaxial with the mold, the stamping cannot be accurately aligned with the stamping mold, and it is easy to cause worker hand injuries, an automatic assembly equipment for oxygen sensor protective caps is provided.

[0005] The automatic assembly equipment of oxygen sensor protective caps comprises a dividing plate, a plurality of component tools are installed around the outer side of the dividing plate at equal intervals, a sensor holder and a protective cap holder are arranged on the component tools, a loading area, a cap installation area, a welding area and a unloading area are arranged around the outer side of the dividing plate corresponding to the component tools, the cap installation area comprises a protective cap placer, and the welding area comprises a lifting clamp and a welding gun module.

[0006] Furthermore, the protective cap placer includes a grabbing module, the grabbing module is slidably sleeved on a translation guide rail, the translation guide rail is fixedly connected to an output end of a lifting drive, and the lifting drive is vertically downward.

[0007] Furthermore, the gripping module comprises a protective cap sleeve, a protective cap sleeve groove is vertically provided at the bottom of the protective cap sleeve, through holes are provided at the front ends of the left and right sides of the protective cap sleeve corresponding to the protective cap sleeve grooves, and automatic clamps are provided on the outer sides of the through holes.

[0008] Furthermore, a plurality of protective cap holders are provided on the component tooling, and the number of the protective cap placers corresponds to the number of the protective cap holders.

[0009] Furthermore, the lifting clamp comprises a sensor clamp, and the sensor clamp is vertically installed below the rotary drive, and the rotary drive is fixedly connected to the output end of the lifting push rod.

[0010] Furthermore, the outer sides of the lifting clamp and the welding gun module are wrapped with a protective shell, and lifting holes are provided at the upper and lower ends of the protective shell corresponding to the lifting clamp.

[0011] Furthermore, the unloading area includes a unloading robot arm, the unloading robot arm includes an automatic clamping module, and the automatic clamping module is installed at the front end of the rotating arm.

[0012] Furthermore, the unloading area includes a finished product placement box, which is arranged below the unloading robot arm, and a plurality of sensor card slots are arranged in the finished product placement box.

[0013] Furthermore, a marking area is provided between the capping area and the material unloading area, and the marking area includes a laser marking machine, and the laser marking machine is correspondingly arranged on the side of the component tooling.

[0014] Furthermore, the loading area, the capping area, the welding area, the unloading area and the marking area are all fixedly provided with tooling sensors corresponding to the sides of the component tooling, and the tooling sensors are electrically connected to the dividing plate.

[0015] The advantages of the utility model are:

[0016] 1. It has a high degree of automation and can replace manual work in the assembly and welding of oxygen sensor protective caps.

[0017] 2. Fast processing speed helps to improve production efficiency and reduce product production costs.

[0018] 3. The product quality is stable and the parts tolerance is small, which is conducive to improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of the automatic assembly equipment of the oxygen sensor protection cap;

[0021] Figure 2It is a structural schematic diagram of the component tooling;

[0022] Figure 3 It is a schematic diagram of the structure of the protective cap placer;

[0023] Figure 4 for Figure 3 The enlarged structure diagram at A;

[0024] Figure 5 It is a schematic diagram of the structure of the lifting clamp, welding gun module and protective shell.

[0025] Figure ID:

[0026] 1. Indexing plate; 2. Component tooling; 201. Sensor holder; 202. Protective cap holder; 3. Protective cap placer; 301. Protective cap sleeve; 3011. Protective cap sleeve slot; 3012. Through hole; 302. Automatic gripper; 303. Translation guide rail; 304. Lifting drive; 4. Lifting gripper; 401. Sensor clamp; 402. Rotation drive; 403. Lifting push rod; 5. Welding gun module; 6. Protective shell; 601. Lifting hole; 7. Unloading robot arm; 701. Automatic clamping module; 702. Rotating arm; 8. Finished product placement box; 801. Sensor slot; 9. Laser marking machine; 10. Tooling sensor; 11. Oxygen sensor; 12. Protective cap. DETAILED DESCRIPTION

[0027] In order to solve the problem that in the stamping step of the traditional oxygen sensor production process, workers need to hold the product and put it into the stamping vertical mold, align it with the stamping mold in the stamping static mold for stamping, the oxygen sensor cannot be firmly positioned during the process, the product cannot be accurately coaxial with the mold, the stamping cannot be accurately aligned with the stamping mold, and it is easy to cause worker hand injuries, an automatic assembly equipment for oxygen sensor protective caps is provided.

[0028] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that the terms such as "within", "in" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present utility model. Changes or adjustments in their relative relationships, without substantially changing the technical content, should also be regarded as the scope of the implementation of the present utility model, and should be stated in advance.

[0030] In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood by specific circumstances.

[0031] like Figures 1 to 5 As shown, this embodiment provides an automatic assembly device for oxygen sensor protective caps, including a dividing plate 1, a plurality of component fixtures 2 are installed equidistantly around the outer side of the dividing plate 1, a sensor holder 201 and a protective cap holder 202 are provided on the component fixture 2, a loading area, a cap mounting area, a welding area and a unloading area are provided around the outer side of the dividing plate 1 corresponding to the component fixture 2, the cap mounting area includes a protective cap placer 3, and the welding area includes a lifting clamp 4 and a welding gun module 5.

[0032] In actual use, first, in the loading area, the oxygen sensor 11 without the protective cap 12 and the protective cap 12 are placed into the sensor holder 201 and the protective cap holder 202. The placement can be done by a worker or an automatic loading mechanism can be set. Then, as the indexing plate 1 rotates, the component jig 2 passes through the capping area, welding area and unloading area one by one to complete the processing. Specifically, in the capping area, the protective cap is positioned and installed on the oxygen sensor using the protective cap placer 3; in the welding area, the lifting claw 4 is used to grab the oxygen sensor with the protective cap installed to the working position of the welding gun module 5, and the welding gun module 5 is used to weld and fix the protective cap; finally, the processed oxygen sensor is taken out from the sensor holder 201 in the unloading area. The number of component jigs 2 can correspond to the number of each working area, so that multiple processes can be carried out simultaneously, thereby improving the processing efficiency.

[0033] The protective cap placement device 3 includes a grabbing module, which is slidably sleeved on a translation guide rail 303, and the translation guide rail 303 is fixedly connected to the output end of a lifting drive 304, and the lifting drive 304 is vertically downward. The protective cap placement device 3 has a two-axis movement function of lifting and translation, so as to grab the protective cap 12 from the protective cap holder 202 and place it on the oxygen sensor 11.

[0034] The grab module includes a protective cap sleeve 301, a protective cap sleeve groove 3011 is vertically opened at the bottom of the protective cap sleeve 301, through holes 3012 are opened on the left and right sides of the protective cap sleeve 301 corresponding to the front end of the protective cap sleeve groove 3011, and automatic clamps 302 are arranged on the outside of the through holes 3012. The protective cap sleeve 301 with through holes 3012 cooperates with the automatic clamps 302 to grab the protective cap, which has a strong design stability, so as to ensure that the protective cap 12 is placed accurately on the oxygen sensor 11 and reduce assembly errors.

[0035] The component fixture 2 is provided with a plurality of protective cap holders 202, and the number of the protective cap placers 3 corresponds to the number of protective cap holders 202. The number of protective cap holders 202 can be set according to the number of protective caps 12 designed for different types of oxygen sensors 11, and in this embodiment, two protective cap holders 202 are provided to correspond to the inner and outer protective caps.

[0036] The lifting jaw 4 includes a sensor clamp 401, which is vertically mounted below a rotary drive 402, and the rotary drive 402 is fixedly connected to the output end of a lifting push rod 403. The rotary drive 402 can rotate the oxygen sensor 11 so as to perform surrounding welding on the protective cap, and the automatic rotation design has stable positioning and can ensure accurate welding position.

[0037] The outer sides of the lifting clamp 4 and the welding gun module 5 are wrapped with a protective shell 6, and the upper and lower ends of the protective shell 6 are provided with lifting holes 601 corresponding to the lifting clamp 4. The protective shell 6 isolates the welding gun module 5 from the external environment to improve safety.

[0038] The unloading area includes an unloading robot arm 7, and the unloading robot arm 7 includes an automatic clamping module 701, and the automatic clamping module 701 is installed at the front end of the rotating arm 702. Since unloading is simple, it is only necessary to take out the processed oxygen sensor 11, so the unloading can be performed by an automatic robot arm instead of manual operation. Many ready-made industrial robots (YAMAHAYK400XE four-axis robot) on the market have a clamping and moving function, and their structural principles are not described here.

[0039] The unloading area includes a finished product placement box 8, which is arranged below the unloading robot arm, and a plurality of sensor slots 801 are arranged in the finished product placement box 8. The finished product placement box 8 with the sensor slots 801 can effectively protect the processed oxygen sensor 11 during transportation to avoid collision damage.

[0040] A marking area is provided between the capping area and the unloading area, and the marking area includes a laser marking machine 9, and the laser marking machine 9 is correspondingly provided on the side of the component tooling 2. The laser marking machine 9 is a commonly used parts processing equipment on the market, which is convenient for leaving marks on the parts for batch management, and there is no need to mark after unloading, and the equipment has a high degree of integration.

[0041] The loading area, the capping area, the welding area, the unloading area and the marking area are all fixedly provided with a tooling sensor 10 corresponding to the side of the component tooling, and the tooling sensor 10 is electrically connected to the indexing plate 1. The tooling sensor 10 can adopt a commonly used proximity sensor on the market, so that when the indexing plate 1 drives the component tooling 2 to rotate, the component tooling 2 is stopped and positioned under the equipment in each processing area, ensuring that the brake positioning of the indexing plate 1 is accurate.

[0042] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementation modes. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. Automatic assembly equipment for oxygen sensor protective caps, including a dividing plate, characterized in that: A plurality of component tools are installed equidistantly around the outer side of the dividing plate, and a sensor holder and a protective cap holder are provided on the component tools. A loading area, a cap installation area, a welding area and a unloading area are provided around the corresponding component tools on the outer side of the dividing plate, and the cap installation area includes a protective cap placer, and the welding area includes a lifting clamp and a welding gun module.

2. The automatic assembly equipment for oxygen sensor protective caps according to claim 1, characterized in that: The protective cap placer comprises a grabbing module, which is slidably sleeved on a translation guide rail, and the translation guide rail is fixedly connected to an output end of a lifting drive, and the lifting drive is vertically downward.

3. The automatic assembly equipment for oxygen sensor protective caps according to claim 2, characterized in that: The grabbing module comprises a protective cap sleeve, a protective cap sleeve groove is vertically provided at the bottom of the protective cap sleeve, through holes are provided at the front ends of the left and right sides of the protective cap sleeve corresponding to the protective cap sleeve grooves, and automatic clamps are provided on the outer sides of the through holes.

4. The automatic assembly equipment for oxygen sensor protective caps according to claim 1, characterized in that: The component tooling is provided with a plurality of protective cap holders, and the number of the protective cap placers corresponds to the number of the protective cap holders.

5. The automatic assembly equipment for oxygen sensor protective caps according to claim 1, characterized in that: The lifting clamp comprises a sensor clamp, and the sensor clamp is vertically installed below the rotary drive, and the rotary drive is fixedly connected to the output end of the lifting push rod.

6. The automatic assembly equipment for oxygen sensor protective caps according to claim 1, characterized in that: The outer sides of the lifting clamp and the welding gun module are wrapped with a protective shell, and lifting holes are opened at the upper and lower ends of the protective shell corresponding to the lifting clamp.

7. The automatic assembly equipment for oxygen sensor protective caps according to claim 1, characterized in that: The unloading area includes an unloading mechanical arm, and the unloading mechanical arm includes an automatic clamping module, and the automatic clamping module is installed at the front end of the rotating arm.

8. The automatic assembly equipment for oxygen sensor protective caps according to claim 1, characterized in that: The unloading area includes a finished product placement box, which is arranged below the unloading robot arm, and a plurality of sensor card slots are arranged in the finished product placement box.

9. The automatic assembly equipment for oxygen sensor protective caps according to claim 1, characterized in that: A marking area is arranged between the capping area and the material unloading area. The marking area comprises a laser marking machine. The laser marking machine is arranged correspondingly on the side of the component tooling.

10. The automatic assembly equipment for oxygen sensor protection caps according to claim 9, characterized in that: The loading area, the capping area, the welding area, the unloading area and the marking area are all fixedly provided with tooling sensors corresponding to the sides of the component tooling, and the tooling sensors are electrically connected to the dividing plate.

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