1. A part neglected loading detection device is characterized by comprising a power supply, a normally open self-reset switch, a first normally open proximity sensor, a second normally open proximity sensor, a first prompting device, a second prompting device and a strong magnet, wherein the power supply, the normally open self-reset switch, the first normally open proximity sensor and the first prompting device form a qualified detection loop, and the power supply, the normally open self-reset switch, the second normally open proximity sensor and the second prompting device form an unqualified detection loop;

the AMT assembly enables the aluminum pressure lever to press a self-reset switch button downwards under the action of gravity, and closes the self-reset switch;

when the AMT box body is internally provided with the supporting sleeve, the powerful magnet can be sucked up by the supporting sleeve above the AMT box body and enters the sensing range of the first normally-open type proximity sensor, the conduction of a qualified loop is detected, and the first prompting device prompts;

when the AMT box is internally provided with the supporting sleeve, the powerful magnet cannot be attracted by the supporting sleeve above the AMT box and is positioned in the sensing range of the second normally-open type proximity sensor, the unqualified loop is detected to be conducted, and the second prompting device prompts.

2. The device of claim 1, wherein the powerful magnet, the first normally-open proximity sensor and the second normally-open proximity sensor are installed inside a POM positioning seat, the normally-open self-reset switch is installed inside a POM base plate, an AMT assembly to be detected is placed on the POM positioning seat, after the position is fixed, the AMT assembly enables an aluminum pressure rod to descend under the action of gravity, the normally-open self-reset switch is closed, and if a supporting sleeve is installed in the AMT box body, the powerful magnet in the positioning seat can be sucked up, wherein the powerful magnet is located right below the position of the supporting sleeve.

3. The device of claim 1, wherein the first prompting device is an indicator light and the second prompting device is an audible and visual alarm.

4. The device of claim 3, wherein the audible and visual alarm, the indicator light and the power supply are part of an electric cabinet, the audible and visual alarm and the indicator light are mounted on a door of the electric cabinet, and the power supply is fixedly mounted in the electric cabinet.

5. The device of claim 1, wherein the first and second normally open proximity sensors are of the same model and have a sensing distance of 1 mm;

the first normally open type proximity sensor is more than 4mm away from the powerful magnet in the vertical direction, and the distance in the horizontal direction is 0.5-1.0 mm;

correspondingly, the second normally open type proximity sensor is equal to the powerful magnet in height in the vertical direction, and the distance in the horizontal direction is 0.5-1.0 mm.

6. A method for detecting the missing part detection device according to claim 1, comprising:

enabling an AMT assembly to be detected to press a self-reset switch button downwards by an aluminum pressure bar under the action of gravity, and closing a self-reset switch;

judging whether a supporting sleeve is installed in the AMT box body or not according to the prompt information of the prompt device;

if the AMT box body is internally provided with the supporting sleeve, the powerful magnet can be attracted by the supporting sleeve above the AMT box body and enters the sensing range of the first normally-open type proximity sensor, the qualified loop is detected to be conducted, and the first prompting device prompts;

if the AMT box is internally provided with the supporting sleeve, the powerful magnet cannot be sucked up by the supporting sleeve above the AMT box and is positioned in the sensing range of the second normally-open type proximity sensor, the unqualified loop is detected to be conducted, and the second prompting device prompts.

7. The method of claim 6, wherein the powerful magnet, the first normally-open proximity sensor and the second normally-open proximity sensor are installed inside a POM positioning seat, the normally-open self-reset switch is installed inside a POM base plate, an AMT assembly to be detected is placed on the POM positioning seat, after the position is fixed, the AMT assembly enables an aluminum pressure rod to descend under the action of gravity, the normally-open self-reset switch is closed, and if a supporting sleeve is installed in the AMT box body, the powerful magnet in the positioning seat is sucked up, wherein the powerful magnet is located right below the position of the supporting sleeve.

8. The method of claim 6, wherein the first prompting device is an indicator light and the second prompting device is an audible and visual alarm.

9. The method of claim 8, wherein the audible and visual alarm, the indicator light and the power supply are part of an electric cabinet, the audible and visual alarm and the indicator light are mounted on a door of the electric cabinet, and the power supply is fixedly mounted in the electric cabinet.

10. The method of claim 6, wherein the first and second normally open proximity sensors are of the same model and have a sensing distance of 1 mm;

the first normally open type proximity sensor is more than 4mm away from the powerful magnet in the vertical direction, and the distance in the horizontal direction is 0.5-1.0 mm;

correspondingly, the second normally open type proximity sensor is equal to the powerful magnet in height in the vertical direction, and the distance in the horizontal direction is 0.5-1.0 mm.

Background

The assembly and the component in the automobile part are generally assembled by a plurality of parts, whether the external key part is neglected to be installed can be checked by visual inspection or photographing visual inspection and other methods, but whether the internal key part is neglected to be installed is difficult. For example, an amt (automated Mechanical transmission) automatic gear selecting and shifting actuator assembly is composed of more than 100 parts, most of which are neglected to be installed and can be detected by a sealing test bench and a performance test bench, but cannot be detected whether two supporting sleeves inside a box body are neglected to be installed or not.

At present, the common methods are a metering method and a weighing method. The metering method is to count the number of parts to be put in which are matched with the production of a shift before the shift is started, and if more parts are produced, neglected loading is indicated, but particularly which assembly neglected loading part needs to be isolated, disassembled and checked for all assemblies on the same day, so that time and labor are wasted. In the weighing method, the total weight of a single assembly is in a certain range, and if each assembly is off-line, an electronic scale is passed, and parts can be neglected if the assembly is light. The weighing method can have misjudgment, the assembly is composed of a plurality of parts, the size of each part has tolerance, the weight also has tolerance, when the weight of each part mostly has limit tolerance, the condition that one or two parts are not installed in the assembly in a missing way and cannot be found out can be caused to cause misjudgment, in addition, the weighing method needs to be additionally provided with a station for carrying, the carrying of the assembly is increased, and the manpower, material resources and the field can be correspondingly increased.

Disclosure of Invention

In view of this, embodiments of the present invention provide a device and a method for detecting missing parts, so as to solve the problem that the existing missing part detection is time-consuming and labor-consuming.

In a first aspect of the embodiments of the present invention, a part neglected loading detection device is provided, including a power supply, a normally open self-reset switch, a first normally open proximity sensor, a second normally open proximity sensor, a first prompting device, a second prompting device, and a strong magnet, where the power supply, the normally open self-reset switch, the first normally open proximity sensor, and the first prompting device form a qualified detection loop, and the power supply, the normally open self-reset switch, the second normally open proximity sensor, and the second prompting device form an unqualified detection loop;

the AMT assembly enables the aluminum pressure lever to press a self-reset switch button downwards under the action of gravity, and closes the self-reset switch;

when the AMT box body is internally provided with the supporting sleeve, the powerful magnet can be sucked up by the supporting sleeve above the AMT box body and enters the sensing range of the first normally-open type proximity sensor, the conduction of a qualified loop is detected, and the first prompting device prompts;

when the AMT box is internally provided with the supporting sleeve, the powerful magnet cannot be attracted by the supporting sleeve above the AMT box and is positioned in the sensing range of the second normally-open type proximity sensor, the unqualified loop is detected to be conducted, and the second prompting device prompts.

According to a second aspect of the present invention, there is provided a part missing-loading detection method, including:

enabling an AMT assembly to be detected to press a self-reset switch button downwards by an aluminum pressure bar under the action of gravity, and closing a self-reset switch;

judging whether a supporting sleeve is installed in the AMT box body or not according to the prompt information of the prompt device;

if the AMT box body is internally provided with the supporting sleeve, the powerful magnet can be attracted by the supporting sleeve above the AMT box body and enters the sensing range of the first normally-open type proximity sensor, the qualified loop is detected to be conducted, and the first prompting device prompts;

if the AMT box is internally provided with the supporting sleeve, the powerful magnet cannot be sucked up by the supporting sleeve above the AMT box and is positioned in the sensing range of the second normally-open type proximity sensor, the unqualified loop is detected to be conducted, and the second prompting device prompts.

In the embodiment of the invention, the existing workstation and the assembly tool are modified, the proximity sensor, the powerful magnet, the prompting device and the like are added, whether the supporting sleeve is installed in the AMT box body is detected and prompted, no complicated operation step is additionally added, whether the supporting sleeve is neglected to be installed can be detected on the basis of the original assembly process, the implementation process is simple, convenient and reliable, the implementation cost is low, no additional manpower and material resources are added, and the implementation cost can be effectively reduced.

Drawings

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

Fig. 1 is a schematic structural diagram of a component neglected loading detection apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a missing part detection apparatus according to an embodiment of the present invention;

fig. 3 is a schematic flow chart of a method for detecting a missing part according to an embodiment of the present invention.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons skilled in the art without any inventive work shall fall within the protection scope of the present invention, and the principle and features of the present invention shall be described below with reference to the accompanying drawings.

The terms "comprises" and "comprising," when used in this specification and claims, and in the accompanying drawings and figures, are intended to cover non-exclusive inclusions, such that a process, method or system, or apparatus that comprises a list of steps or elements is not limited to the listed steps or elements.

The leak-mounting of the supporting sleeve does not affect the tightness and performance of the single AMT assembly, but when the AMT assembly is mounted at a client side, the connecting bolt needs to penetrate through the main box cover, the supporting sleeve and the main box body to fasten the AMT assembly on the gearbox, if the supporting sleeve is in leak-mounting, the main box cover can be broken when the connecting bolt is screwed down by using the torque of 55N.m under the condition that the supporting sleeve is not supported, and the whole AMT assembly needs to be replaced. Even though manual inspection and marking with a marker pen during assembly is added, there is still a possibility that AMT with missing support sleeves will always be streamed to the client. In the embodiment of the invention, based on the characteristic that steel parts can adsorb magnets, and aluminum alloy and non-metal materials cannot adsorb the magnets, the powerful magnet and the two proximity sensors are combined for use, and the qualified detection loop and the unqualified detection loop are respectively conducted, so that whether the AMT assembly is neglected to install the supporting sleeve can be judged.

The part neglected loading detection device provided by the embodiment of the invention is not limited to the detection of the neglected loading of the supporting sleeve in the AMT assembly, and can also detect and judge the parts, assemblies and the like of specific neglected loading steel parts.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a component neglected loading detection device according to an embodiment of the present invention, including a power supply (1), a normally open self-reset switch (2), a first normally open proximity sensor (3), a second normally open proximity sensor (4), a first prompt device (5), a second prompt device (6), and a strong magnet, where the power supply (1), the normally open self-reset switch (2), the first normally open proximity sensor (3), and the first prompt device (5) form a qualified detection loop, and the power supply (1), the self-reset switch (2), the second normally open proximity sensor (4), and the second prompt device (6) form an unqualified detection loop.

Specifically, the powerful magnet, the first normally-open type proximity sensor (3) and the second normally-open type proximity sensor (4) are installed inside the POM positioning seat, the normally-open self-reset switch (2) is installed in the POM base plate, the AMT assembly to be detected is placed on the POM positioning seat, after the position is fixed, the AMT assembly enables the aluminum pressure rod to move downwards under the action of gravity, the normally-open self-reset switch (2) is closed, and if a supporting sleeve is installed in the AMT box body, the powerful magnet in the positioning seat can be sucked up, wherein the powerful magnet is located under the position of the supporting sleeve.

Optionally, the first prompting device (5) is an indicator light, generally a green indicator light, and the second prompting device (6) is an audible and visual alarm.

The audible and visual alarm, the indicator light and the power supply belong to the electric cabinet, the audible and visual alarm and the indicator light are installed on the door of the electric cabinet, and the power supply is fixedly installed in the electric cabinet.

Specifically, the AMT assembly enables an aluminum pressure lever to press a self-reset switch button downwards under the action of gravity, and closes a self-reset switch (2);

when the AMT box is internally provided with the supporting sleeve, the powerful magnet is attracted by the supporting sleeve positioned above the powerful magnet, the powerful magnet enters the induction range of the first normally-open type proximity sensor (3), the conduction of a qualified loop is detected, and the first prompting device (5) prompts;

when the AMT box is internally provided with no supporting sleeve, the powerful magnet cannot be sucked up by the supporting sleeve above, the powerful magnet is positioned in the induction range of the second normally-open type proximity sensor (4), the unqualified loop is detected to be conducted, and the second prompt device (6) prompts.

If place on the POM positioning seat and wait to detect AMT assembly, then can trigger from reset switch closure under the action of gravity, and then whether install in the support sleeve according to AMT assembly box, corresponding powerful magnet is inhaled, makes normally open type proximity sensor's switch closed, switches on corresponding return circuit, reminds through suggestion device.

Wherein, can know by fig. 1, normally open from reset switch (2) one end and being connected with power (1), the other end is connected with the one end of first normally open type proximity sensor (3), second normally open type proximity sensor (4) respectively, first suggestion device (5) (pilot lamp) are connected to first normally open type proximity sensor (3) other end, second suggestion device (6) are connected to second normally open type proximity sensor (4) other end, the power negative pole is all connected to first suggestion device (5), second suggestion device (6) other end.

In this embodiment, based on the detection device that the characteristic that the support sleeve can adsorb magnet and design, can realize whether neglected loading support sleeve detects and indicate the testing result to the AMT assembly, the device is simple and practical and reliable, and the cost of manufacture is low, need not additionally detect through methods such as measurement, weighing, the material resources of using manpower sparingly reduce the detection cost.

In another embodiment, as shown in fig. 2, a POM material positioning seat and a bottom plate of an ST60 assembly station before final inspection testing are modified to form corresponding holes and grooves, a magnet, a general normally open type proximity sensor and a self-reset switch button are ingeniously added into the positioning seat and the bottom plate, the normally open type self-reset switch is respectively connected with the two normally open type proximity sensors, and the other ends of the two normally open type proximity sensors are respectively connected with a green indicator lamp and an audible and visual alarm, so that whether a support sleeve is omitted in the AMT assembly after cover closing is detected.

Fig. 2 is a schematic physical structure diagram of the detection apparatus, in which (201) is a product to be mounted/inspected, (202) is a positioning cylindrical pin, (203) is a POM positioning seat, (204) is a POM base plate, (205) is a connecting screw, (206) is a normally open self-reset switch button, (207) is a lock nut, (208) is an aluminum pressure lever, (209) is a positioning flat pin, (210) is a strong magnet, (211) is a second normally open proximity sensor QS2, (212) is a lock nut, (213) is a first normally open proximity sensor QS1, and (214) is a lock nut.

When the automatic circuit breaker is used, an operator places the AMT assembly (201) to be connected on the assembling positioning seat (203) of the ST60 workstation, positions and clamps the AMT assembly, the AMT assembly pushes the aluminum pressing rod (208) to move downwards and presses the self-reset switch button (206), and a circuit switch is closed. If the supporting sleeve in the box body is not neglected to be installed, the strong magnet (210) in the assembling positioning seat (203) is attracted and separated from the sensing range of the second normally-open type proximity sensor (211) to reach the sensing range of the first normally-open type proximity sensor (213), the first normally-open type proximity sensor (213) is closed, the electric loop for qualified judgment is switched on, and the green light qualified indicator lamp is turned on; if the supporting sleeve is neglected to be installed, the powerful magnet cannot be attracted, the magnet is still located in the sensing range of the second normally-open type proximity sensor (211), and then the audible and visual alarm can buzz and flicker along with the closing of the self-reset switch button (206) and the conduction of an unqualified electric circuit, so that an operator is prompted to neglect to install the supporting sleeve and needs to open the cover for rework.

The POM positioning seat, the POM bottom plate, the positioning pins and the like of the POM bottom plate are original assembly tool upper components, and only simple supplementary processing needs to be carried out on the POM positioning seat and the POM bottom plate during implementation. Self-reset switch buttons, two normally open proximity sensors, an audible and visual alarm, a green pass indicator light, wires, a DC24V power supply, and a control box are all standard components of direct purchase. Audible and visual alarm, green qualified indicator light are installed on the chamber door of electric cabinet, and DC24V power fixed mounting is in the electric cabinet, and electric elements are connected well with the wire each other.

The wires in the tool are embedded in the wire grooves which are additionally processed, and for safety and attractiveness, the wires outside the tool need to be rolled up neatly, and are collectively sleeved together by a corrugated sleeve and connected into an electric cabinet.

In order to ensure the induction strength of the support sleeve in the product box body to the magnet, a strong magnet is needed, and the magnet is placed under the position of the support sleeve, and the distance is required to be proper.

Preferably, the two normally open proximity sensors have the same model, and the sensing distance is 1 mm; in the qualified detection loop, the distance between the first normally-open type proximity sensor and the powerful magnet in the vertical direction is more than 4mm, and the distance in the horizontal direction is 0.5-1.0 mm (the distance is adjustable); correspondingly, in the unqualified detection loop, the second normally-open proximity sensor is equal to the powerful magnet in height in the vertical direction, and the distance in the horizontal direction is 0.5-1.0 mm. There is a need in the design to ensure that the magnet will enter the sensing range of the first proximity sensor as long as the magnet is attracted.

For guaranteeing reliability and stability of detection, verification needs to be made in advance, and how far the magnet is away from the bottom outside the box body can be sucked up by the supporting sleeve, and the magnet can be not sensed only by the distance from the proximity sensor to the vertical direction through verification in advance. With the verification results, the mounting position sizes of the magnet and the two proximity sensors on the tool can be determined, and the specific size requirements for performing supplementary processing on the tool can be determined.

Fig. 3 is a schematic flow chart of a method for detecting missing part installation according to an embodiment of the present invention, including:

s301, enabling the AMT assembly to be detected to enable the aluminum pressure rod to press a self-reset switch button downwards under the action of gravity, and closing a self-reset switch;

s302, judging whether a supporting sleeve is installed in the AMT box body or not according to the prompt information of the prompt device;

if the AMT box body is internally provided with the supporting sleeve, the powerful magnet can be attracted by the supporting sleeve above the AMT box body and enters the sensing range of the first normally-open type proximity sensor, the qualified loop is detected to be conducted, and the first prompting device prompts;

if the AMT box is internally provided with the supporting sleeve, the powerful magnet cannot be sucked up by the supporting sleeve above the AMT box and is positioned in the sensing range of the second normally-open type proximity sensor, the unqualified loop is detected to be conducted, and the second prompting device prompts.

Specifically, strong magnet, first normally open type proximity sensor and second normally open type proximity sensor install inside the POM positioning seat, normally open from reset switch installation in the POM bottom plate, will wait to detect the AMT assembly and place on the POM positioning seat, fixed position back, AMT assembly makes aluminium system depression bar down under the action of gravity, the closure normally open from reset switch, if install the support sleeve in the AMT box, strong magnet can be inhaled in the positioning seat, wherein, strong magnet is located under the support sleeve position.

The first prompting device is an indicator light, and the second prompting device is an audible and visual alarm.

The audible and visual alarm, the indicator light and the power supply belong to the electric cabinet, the audible and visual alarm and the indicator light are installed on a door of the electric cabinet, and the power supply is fixedly installed in the electric cabinet.

The selectable first normally-open proximity sensor and the second normally-open proximity sensor are the same in model, and the sensing distance is 1 mm; the first normally open type proximity sensor is more than 4mm away from the powerful magnet in the vertical direction, and the distance in the horizontal direction is 0.5-1.0 mm;

correspondingly, the second normally open type proximity sensor is equal to the powerful magnet in height in the vertical direction, and the distance in the horizontal direction is 0.5-1.0 mm.

Based on the method provided by the embodiment of the invention, whether the AMT leaks the supporting sleeve can be judged according to the prompt information of the indicator lamp or the alarm.

It should be noted that, in the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to relevant descriptions of other embodiments for parts that are not described in detail in a certain embodiment.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.