CN220197396U

CN220197396U - Error-proofing jig

Info

Publication number: CN220197396U
Application number: CN202320973190.XU
Authority: CN
Inventors: 梁尤滔; 郭腾; 杨赞灵; 林志城; 王如保; 高兆昌
Original assignee: Dongfeng Honda Engine Co Ltd
Current assignee: Dongfeng Honda Engine Co Ltd
Priority date: 2023-04-25
Filing date: 2023-04-25
Publication date: 2023-12-19
Anticipated expiration: 2033-04-25

Abstract

The utility model provides an error-proofing jig which comprises a mounting body and an error-proofing detection assembly. The installation body is provided with a first positioning part and a second positioning part, the first positioning part is used for being matched with the water tank body in a positioning way, and the second positioning part is used for being matched with the connecting pipe in a positioning way; the mistake proofing detection assembly is installed in the installation body and is used for detecting the assembly direction of the connecting pipe and the water tank body. The mistake proofing detection component in the application can detect the detection mark on the connecting pipe to whether the assembly direction of the connecting pipe relative to the water tank body is accurate through the accurate, reliable judgement connecting pipe of the detection mark that detects, avoid the auxiliary water tank to leak to examine or the condition emergence of mistake examining, improved auxiliary water tank assembly and detected reliability and accuracy.

Description

Error-proofing jig

Technical Field

The utility model relates to the technical field of automobile accessories, in particular to an error-proofing jig.

Background

The existing automobiles in the market are all provided with auxiliary water tanks, each auxiliary water tank comprises a water tank body and a rubber pipe communicated with the water tank body, and when the temperature of an engine is high, part of anti-freezing liquid expanded by liquid flows into the water tank body through the rubber pipe; when the temperature is reduced and the pressure of the cooling system is negative, the system sucks the antifreeze in the water tank body into the cooling system through the rubber pipe. However, in the process of assembling the auxiliary water tank, the water tank body and the rubber tube are irregular in shape, yellow and white marks are arranged at the two ends of the rubber tube, and the correct assembling direction of the rubber tube is ensured (namely, one end of the rubber tube with the white mark is correspondingly communicated with the water tank body). The conventional auxiliary water tank inspection method is to confirm the hose assembly direction by visual inspection by an operator. Therefore, in the conventional auxiliary water tank inspection method, the operator is liable to miss inspection or miss inspection due to eye fatigue, so that the auxiliary water tank with poor assembly flows out.

Disclosure of Invention

Based on this, it is necessary to provide an error-proofing jig for the problem that the conventional auxiliary water tank inspection method is prone to missed inspection or false inspection due to eye fatigue of an operator, so that the auxiliary water tank with defective assembly flows out.

The technical scheme is as follows:

in one aspect, an error-proofing fixture is provided, including:

the installation body is provided with a first positioning part and a second positioning part, the first positioning part is used for being matched with the water tank body in a positioning way, and the second positioning part is used for being matched with the connecting pipe in a positioning way; a kind of electronic device with high-pressure air-conditioning system

The error-proofing detection assembly is arranged on the installation body and is used for detecting the detection mark on the connecting pipe.

The mistake proofing jig in the above-mentioned embodiment, during the use, correspond the accessory water tank and install on mistake proofing jig for the water tank body corresponds location cooperation with first location portion, and the connecting pipe corresponds location cooperation with second location portion, thereby guarantees that the position of connecting pipe for mistake proofing detection subassembly remains fixed, and the connecting pipe is located mistake proofing detection subassembly's detection range. Then, the mistake proofing detection assembly starts to detect the detection mark on the connecting pipe, and can accurately and reliably judge whether the assembling direction of the connecting pipe relative to the water tank body is accurate or not through the detected detection mark, so that the condition that the auxiliary water tank is missed to be detected or misplaced is avoided, and the reliability and the accuracy of the auxiliary water tank assembling and detecting are improved.

The technical scheme is further described as follows:

in one embodiment, a first groove is formed in the top of the first positioning portion, and the inner contour shape of the first groove is matched with the outer contour shape of the water tank body.

In one embodiment, a second groove is formed in the top of the second positioning portion, and the inner contour shape of the second groove is matched with the outer contour shape of the connecting pipe.

In one embodiment, the error-proofing detection assembly includes a first photoelectric sensor and a second photoelectric sensor, where the first photoelectric sensor and the second photoelectric sensor are disposed corresponding to two ends of the connecting pipe, and the first photoelectric sensor and the second photoelectric sensor respectively detect detection marks on two ends of the connecting pipe.

In one embodiment, the error-proofing jig further includes a locking member mounted to the mounting body and configured to lock the tank body and the first positioning portion as one body.

In one embodiment, the mounting body is provided with a first mounting bracket, the locking member is provided with a first telescopic cylinder, the first telescopic cylinder is provided with a first telescopic end, and the first telescopic cylinder is mounted on the first mounting bracket, so that the first telescopic end is arranged above the first positioning portion and can reciprocate along a direction close to or far away from the first positioning portion.

In one embodiment, the error-proofing jig further comprises a dotting mechanism, wherein the dotting mechanism is installed on the installation body and used for dotting confirmation on the water tank body.

In one embodiment, the dotting mechanism comprises a second telescopic cylinder and a dotting pen, wherein the second telescopic cylinder is provided with a second telescopic end, and the second telescopic end is in transmission connection with the dotting pen, so that the dotting pen can reciprocate along a direction close to or far away from the first positioning part.

In one embodiment, the error-proofing jig comprises a power supply, a control switch, a first relay, a second relay, a third relay, a first normally-open contact, a second normally-open contact, a third normally-open contact, a first normally-closed contact, a second normally-closed contact, a third normally-closed contact, a first electromagnetic valve, a second electromagnetic valve and an error-reporting component, wherein the power supply is provided with a positive pole and a negative pole, the positive pole is electrically connected with one end of the control switch, one end of the control switch is electrically connected with one end of the first photoelectric sensor, one end of the second photoelectric sensor, one end of the first electromagnetic valve, one end of the first normally-open contact, one end of the third normally-closed contact and one end of the third normally-open contact are electrically connected with one end of the first photoelectric sensor, two ends of the second normally-closed contact are respectively electrically connected with one end of the first normally-open contact and one end of the third relay, the other end of the normally-closed contact is electrically connected with one end of the first electromagnetic valve, the other end of the second normally-closed contact is electrically connected with one end of the first normally-closed contact and one end of the second electromagnetic valve, the other end of the error-reporting component is electrically connected with one end of the first electromagnetic valve, the other end of the first normally-closed contact and the other end of the first normally-closed contact is electrically connected with the other end of the first electromagnetic valve, the second electromagnetic valve is electrically connected with the second telescopic cylinder, the first relay is electrically connected with the first normally open contact and the first normally closed contact, the second relay is electrically connected with the second normally open contact and the second normally closed contact, and the third relay is electrically connected with the third normally open contact and the third normally closed contact.

In one embodiment, the error reporting component comprises an error reporting lamp and a buzzer, wherein one end of the error reporting lamp is electrically connected with the other end of the first normally-closed contact and the other end of the second normally-closed contact, one end of the buzzer is electrically connected with the other end of the first normally-closed contact and the other end of the second normally-closed contact, and the other end of the error reporting lamp and the other end of the buzzer are electrically connected with the negative electrode.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application, illustrate and explain the application and are not to be construed as limiting the application.

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an embodiment of an error-proofing fixture.

Fig. 2 is an electrical control circuit diagram of the error-proofing fixture of fig. 1.

Reference numerals illustrate:

10. error-proofing jig; 100. a mounting body; 110. a first positioning portion; 120. a second positioning portion; 130. a first mounting bracket; 140. a second mounting bracket; 200. an error-proofing detection assembly; 210. a first photosensor; 220. a second photosensor; 300. an auxiliary water tank; 310. a water tank body; 320. a connecting pipe; 400. a locking member; 410. a first telescopic cylinder; 411. a first telescoping end; 500. a dotting mechanism; 510. the second telescopic cylinder; 511. a second telescoping end; 520. and (5) dotting pen.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

As shown in fig. 1, in one embodiment, an error-proofing fixture 10 is provided, which includes a mounting body 100 and an error-proofing detection component 200. The installation body 100 is provided with a first positioning part 110 and a second positioning part 120, wherein the first positioning part 110 is used for being matched with the water tank body 310 in a positioning way, and the second positioning part 120 is used for being matched with the connecting pipe 320 in a positioning way; the error-proof detecting assembly 200 is mounted to the mounting body 100 and is used for detecting the detection mark on the connection pipe 320.

When the error-proofing jig 10 in the above embodiment is used, the auxiliary water tank 300 is correspondingly mounted on the error-proofing jig 10, so that the water tank body 310 is correspondingly positioned and matched with the first positioning portion 110, and the connecting pipe 320 is correspondingly positioned and matched with the second positioning portion 120, so that the position of the connecting pipe 320 relative to the error-proofing detection assembly 200 is ensured to be kept fixed, and the connecting pipe 320 is positioned within the detection range of the error-proofing detection assembly 200. Then, the error-proofing detecting assembly 200 starts to detect the detection mark on the connecting pipe 320, and can accurately and reliably determine whether the assembling direction of the connecting pipe 320 relative to the water tank body 310 is accurate by the detected detection mark, so as to avoid the occurrence of the condition of missed detection or false detection of the auxiliary water tank 300, and improve the reliability and accuracy of the assembling detection of the auxiliary water tank 300.

The mounting body 100 may be a mounting plate, a mounting platform, or other mounting structure. The first positioning portion 110 and the second positioning portion 120 may be positioning blocks, positioning brackets, positioning slots or other positioning structures. In this embodiment, the first positioning portion 110 is set as a first positioning block, the second positioning portion 120 is set as a second positioning block, and the first positioning block and the second positioning block can be integrally formed with the mounting body 100, or can be mounted on the mounting body 100 by a connection manner such as plugging, clamping or screwing.

Further, as shown in fig. 1, a first groove is provided at the top of the first positioning portion 110, and an inner profile shape of the first groove is adapted to an outer profile shape of the tank body 310. In this way, the contact area between the water tank body 310 and the first positioning portion 110 increases, so that the first positioning portion 110 can stably and reliably support the water tank body 310, and the reliability of the error-proofing fixture 10 is improved. In addition, the first positioning portion 110 can also detect the contour shape of the water tank body 310 through the inner contour shape of the first groove, so as to ensure that the contour shape of the water tank body 310 meets the processing requirement, and improve the applicability of the error-proofing fixture 10.

As shown in fig. 1, optionally, a second groove is provided at the top of the second positioning portion 120, and an inner profile shape of the second groove is adapted to an outer profile shape of the connection pipe 320. Thus, the contact area between the connecting pipe 320 and the second positioning portion 120 is increased, so that the connecting pipe 320 is prevented from moving relative to the error-proofing detection assembly 200 in the detection process, and the reliability of the error-proofing jig 10 is improved. In addition, the second positioning portion 120 can also detect the profile shape of the connecting pipe 320 through the inner profile shape of the second groove, so as to ensure that the profile shape of the connecting pipe 320 meets the processing requirement, and improve the applicability of the error-proofing fixture 10.

The error-proofing detection assembly 200 may be a photoelectric sensor, a vision sensor, or other detection structure. The error-proofing detection assembly 200 may be mounted on the mounting body 100 by means of a fixed connection such as plugging, clamping or screwing. The detection mark may be a color mark, an arrow mark, a graphic mark, or other marks for marking the assembly direction of the connection pipe 320.

As shown in fig. 1, in one embodiment, the error-proofing detection assembly 200 includes a first photoelectric sensor 210 and a second photoelectric sensor 220, the first photoelectric sensor 210 and the second photoelectric sensor 220 are disposed corresponding to two ends of the connection pipe 320, and the first photoelectric sensor 210 and the second photoelectric sensor 220 respectively detect detection marks on two ends of the connection pipe 320. Thus, the first photoelectric sensor 210 and the second photoelectric sensor 220 can respectively detect different detection marks on the connecting pipe 320, thereby improving the reliability and accuracy of the error-proofing fixture 10.

Specifically, in this embodiment, the connection pipe 320 is configured as a rubber pipe, one end of the rubber pipe, which is used for being communicated with the water tank body 310, is provided with a white mark, the first photoelectric sensor 210 is used for detecting the white mark, one end of the rubber pipe, which is far away from the water tank body 310, is provided with a yellow mark, and the second photoelectric sensor 220 is used for detecting the yellow mark.

As shown in fig. 1, in one embodiment, the error-proofing jig 10 further includes a locking member 400, and the locking member 400 is mounted to the mounting body 100 and is used to lock the water tank body 310 with the first positioning portion 110 as one body. In this way, the locking member 400 can lock the tank body 310 and the first positioning portion 110 into a whole, so that the auxiliary tank 300 is ensured not to move relative to the first positioning portion 110 in the detection process, and the reliability of the error-proofing fixture 10 is improved.

The locking member 400 may be a buckle, a lock catch, a pressing block, a pressing plate, or other locking structure.

As shown in fig. 1, alternatively, the mounting body 100 is provided with a first mounting bracket 130, the locking member 400 is provided as a first telescopic cylinder 410, the first telescopic cylinder 410 is provided with a first telescopic end 411, and the first telescopic cylinder 410 is mounted on the first mounting bracket 130 such that the first telescopic end 411 is disposed above the first positioning portion 110 at intervals and can reciprocate in a direction approaching or separating from the first positioning portion 110. Thus, the first positioning portion 110 can be matched with the first telescopic end 411 to clamp the water tank body 310, so that the water tank body 310 can not drive the connecting pipe 320 to move, and the reliability of the error-proofing jig 10 is improved.

As shown in fig. 1, in other embodiments, the first photoelectric sensor 210 is mounted on the first mounting bracket 130, the mounting body 100 is further provided with the second mounting bracket 140, the second photoelectric sensor 220 is mounted on the second mounting bracket 140, and the first mounting bracket 130 and the second mounting bracket 140 are disposed corresponding to two ends of the second groove. In this way, the first photoelectric sensor 210 and the second photoelectric sensor 220 can detect the detection marks on the two ends of the connecting pipe 320 respectively, and the reliability of the error-proofing fixture 10 is improved.

As shown in fig. 1, in one embodiment, the error-proofing fixture 10 further includes a dotting mechanism 500, and the dotting mechanism 500 is mounted on the mounting body 100 and is used for dotting confirmation of the water tank body 310. In this way, the dotting mechanism 500 can perform dotting confirmation on the auxiliary water tank 300 with the correct assembling direction of the connecting pipe 320, so that a worker can distinguish the auxiliary water tank 300 with the correct assembling direction of the connecting pipe 320, missing parts or repeated detection of the auxiliary water tank 300 are avoided, and the reliability and the detection efficiency of the error-proofing jig 10 are improved.

The dotting mechanism 500 may be a combination of a telescopic motor and a dotting member, a combination of a hydraulic telescopic cylinder and a dotting member, a combination of a telescopic cylinder and a dotting member, or other dotting structures. The dotting mechanism 500 may be mounted to the mounting body 100 by a snap, plug, screw, or other connection.

As shown in fig. 1, optionally, the dotting mechanism 500 includes a second telescopic cylinder 510 and a dotting pen 520, where the second telescopic cylinder 510 is provided with a second telescopic end 511, and the second telescopic end 511 is in transmission connection with the dotting pen 520, so that the dotting pen 520 can reciprocate in a direction approaching or separating from the first positioning portion 110. Thus, the reliability of the error-proofing jig 10 is improved.

As shown in fig. 1 and 2, in one embodiment, the error-proofing jig 10 includes a power supply, a control switch, a first relay, a second relay, a third relay, a first normally-open contact, a second normally-open contact, a third normally-open contact, a first normally-closed contact, a second normally-closed contact, a third normally-closed contact, a first solenoid valve, a second solenoid valve, and an error-reporting component, where the power supply is provided with an anode and a cathode, the anode is electrically connected with one end of the control switch, the other end of the control switch is electrically connected with one end of the first photosensor 210, one end of the second photosensor 220, one end of the first solenoid valve, one end of the first normally-open contact, one end of the third normally-closed contact, and one end of the third normally-open contact, the first relay is electrically connected with the first photosensor 210, and the second relay is electrically connected with the second photosensor 220, the two ends of the second normally open contact are respectively and correspondingly electrically connected with the other end of the first normally open contact and one end of a third relay, the other end of the third normally closed contact is electrically connected with one end of the first normally closed contact and one end of the second normally closed contact, the other end of the first normally closed contact and the other end of the second normally closed contact are electrically connected with one end of the error reporting component, the other end of the third normally open contact is electrically connected with one end of a second electromagnetic valve, the other end of the first photoelectric sensor 210, the other end of the second photoelectric sensor 220, the other end of the first electromagnetic valve, the other end of the third relay, the other end of the error reporting component and the other end of the second electromagnetic valve are electrically connected with a negative electrode point, the first electromagnetic valve is electrically connected with the first telescopic cylinder 410, the second electromagnetic valve is electrically connected with the second telescopic cylinder 510, the first relay is electrically connected with the first normally open contact and the first normally closed contact, the second relay is electrically connected with the second normally open contact and the second normally closed contact, the third relay is electrically connected with the third normally open contact and the third normally closed contact. Thus, when the auxiliary water tank 300 needs to be subjected to error-proofing detection, the auxiliary water tank 300 is correspondingly installed on the error-proofing jig 10, the control switch is turned off, and the first electromagnetic valve is turned on, so that the first telescopic cylinder 410 drives the first telescopic end 411 to move towards the direction close to the first positioning portion 110 to press the water tank body 310. When the assembling direction of the connecting pipe 320 relative to the water tank body 310 is correct, the first photoelectric sensor 210 and the second photoelectric sensor 220 both detect detection marks, the first relay and the second relay are electrified, the first normally closed contact and the second normally closed contact are opened, the first normally open contact and the second normally open contact are closed, the first normally open contact, the second normally open contact and the third relay form a serial connection AND gate logic judging circuit, the third relay is electrified, the third normally open contact is further closed, the second electromagnetic valve is conducted, and therefore the second telescopic cylinder 510 drives the dotting pen 520 to move towards the direction of the first positioning portion 110 through the second telescopic end 511 so as to perform dotting confirmation on the water tank body 310. When the connecting pipe 320 is wrong for the assembly direction of the water tank body 310, the first photoelectric sensor 210 and the second photoelectric sensor 220 can not detect the detection mark, the first relay and the second relay can not be electrified, the first normally closed contact, the second normally closed contact, the third normally closed contact and a circuit formed by the error reporting component are conducted, the error reporting component sends an error reporting signal to remind a worker, the error preventing jig 10 is guaranteed to accurately screen the auxiliary water tank 300 with the connecting pipe 320 being wrongly assembled, and reliability and accuracy of the error preventing jig 10 are improved.

The fact that the fitting direction of the connection pipe 320 with respect to the tank body 310 is correct means that the placement shape of the connection pipe 320 with respect to the second positioning portion 120 is correct, and the detection marks (color marks) at both ends of the connection pipe 320 are correct.

As shown in fig. 2, the error reporting component comprises an error reporting lamp and a buzzer, wherein one end of the error reporting lamp is electrically connected with the other end of the first normally-closed contact and the other end of the second normally-closed contact, one end of the buzzer is electrically connected with the other end of the first normally-closed contact and the other end of the second normally-closed contact, and the other end of the error reporting lamp and the other end of the buzzer are electrically connected with the negative electrode. Thus, when the connecting pipe 320 of the auxiliary water tank 300 is detected to be assembled in the wrong direction, the alarm lamp is turned on, and the buzzer emits error reporting sound, so that the staff can find out and perform corresponding processing in time, and the reliability of the error preventing jig 10 is improved.

In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., these terms refer to the orientation or positional relationship based on the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In this application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

It will be further understood that when interpreting the connection or positional relationship of elements, although not explicitly described, the connection and positional relationship are to be interpreted as including the range of errors that should be within an acceptable range of deviations from the particular values as determined by those skilled in the art. For example, "about," "approximately," or "substantially" may mean within one or more standard deviations, and is not limited herein.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples represent only a few embodiments of the present application, which are described in more detail and are not thereby to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims

1. An error proofing jig, which is characterized by comprising:

2. The mistake proofing fixture of claim 1, wherein a first groove is formed in the top of the first positioning portion, and an inner contour shape of the first groove is matched with an outer contour shape of the water tank body.

3. The error proofing jig according to claim 1, wherein a second groove is provided at the top of the second positioning portion, and an inner contour shape of the second groove is adapted to an outer contour shape of the connecting pipe.

4. The mistake-proofing jig according to any one of claims 1 to 3, wherein the mistake-proofing detection assembly comprises a first photoelectric sensor and a second photoelectric sensor, the first photoelectric sensor and the second photoelectric sensor are arranged corresponding to two ends of a connecting pipe, and the first photoelectric sensor and the second photoelectric sensor respectively detect detection marks on the two ends of the connecting pipe.

5. The mistake proofing jig according to claim 4, further comprising a locking member mounted to the mounting body and adapted to lock the water tank body and the first positioning portion as one body.

6. The mistake proofing jig according to claim 5, wherein the mounting body is provided with a first mounting bracket, the locking member is provided as a first telescopic cylinder, the first telescopic cylinder is provided with a first telescopic end, and the first telescopic cylinder is mounted on the first mounting bracket such that the first telescopic end is disposed above the first positioning portion and can reciprocate in a direction approaching or separating from the first positioning portion.

7. The mistake proofing fixture of claim 6, further comprising a dotting mechanism mounted to the mounting body and configured to dott the water tank body.

8. The mistake proofing jig of claim 7, wherein the dotting mechanism comprises a second telescopic cylinder and a dotting pen, the second telescopic cylinder is provided with a second telescopic end, and the second telescopic end is in transmission connection with the dotting pen, so that the dotting pen can reciprocate in a direction close to or far away from the first positioning portion.

9. The error proofing jig according to claim 8, wherein the error proofing jig comprises a power supply, a control switch, a first relay, a second relay, a third relay, a first normally open contact, a second normally open contact, a third normally open contact, a first normally closed contact, a second normally closed contact, a third normally closed contact, a first solenoid valve, a second solenoid valve and an error reporting component, the power supply is provided with a positive electrode and a negative electrode, the positive electrode is electrically connected with one end of the control switch, the other end of the control switch is electrically connected with one end of the first photoelectric sensor, one end of the second photoelectric sensor, one end of the first solenoid valve, one end of the first normally open contact, one end of the third normally closed contact and one end of the third normally open contact are electrically connected, the first relay is electrically connected with the first photoelectric sensor, the two ends of the second normally open contact are respectively electrically connected with one end of the first normally closed contact and one end of the third relay, the other end of the normally closed contact is electrically connected with the first normally closed contact and the other end of the third solenoid valve, the other end of the normally closed contact is electrically connected with the first normally closed contact, the other end of the first normally closed contact and the other end of the third solenoid valve is electrically connected with the other end of the first normally closed contact, the first normally closed contact is electrically connected with the other end of the first normally closed contact and the first normally closed contact is electrically connected with the first solenoid valve, the second electromagnetic valve is electrically connected with the second telescopic cylinder, the first relay is electrically connected with the first normally open contact and the first normally closed contact, the second relay is electrically connected with the second normally open contact and the second normally closed contact, and the third relay is electrically connected with the third normally open contact and the third normally closed contact.

10. The error-proofing jig according to claim 9, wherein the error-reporting component comprises an error-reporting lamp and a buzzer, one end of the error-reporting lamp is electrically connected with the other end of the first normally-closed contact and the other end of the second normally-closed contact, one end of the buzzer is electrically connected with the other end of the first normally-closed contact and the other end of the second normally-closed contact, and the other end of the error-reporting lamp and the other end of the buzzer are electrically connected with the negative electrode.