A method and device for detecting the position of a spring in a plastic assembly

Abstract

The present application relates to a kind of plastic component spring in place detection method and in place detection device, detection method includes: the plastic component is placed in placement site;Drive press assembly and be located in the plastic component fixed in placement site;Drive detection component and plastic component abut and carry out conduction detection;Obtain detection result and analyze whether spring is installed in place;If determining the spring of plastic component is installed in place, then ultrasonic welding is carried out to the plastic component;Wherein, obtain detection result and analyze whether spring is installed in place include: if first spring needle and matched spring needle are not conducted, second spring needle and matched spring needle are conducted, third spring needle and matched spring needle are not conducted, then it is determined that spring is installed in place, otherwise it is determined that spring is not installed in place.Ultrasonic welding is carried out before, first detection is carried out, and the detected procedure is fused in assembly process flow, beneficial to improve work efficiency, and the recycling rate of defective product, reduce defective product rate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of conduction test, in particular to a method and device for detecting the installation of a spring in a plastic component. BACKGROUND

[0002] At present, the installation detection of plastic products and springs is mostly manual visual detection, and can only be performed on finished products after the plastic product and spring assembly process is completed, which cannot check defective products during the assembly production process, which separates the assembly and detection processes, is complicated and inefficient, and causes damage to the plastic product or deformation of the spring when disassembled after assembly, which makes it difficult to rework or recycle defective products detected at this time, for example, in the embodiment of the present application, ultrasonic welding is performed after the assembly of parts, so that the recycling rate of defective products detected after the assembly of finished products is 0%, which leads to the direct scrapping of the defective products. SUMMARY

[0003] The first object of the present application is to provide a method for detecting the installation of a spring in a plastic component, which aims to solve the technical problems of the separation of assembly and detection processes, complicated process, low work efficiency, and difficulty in reworking or recycling defective products.

[0004] To solve the above technical problems, a method for detecting the installation of a spring in a plastic component is provided, comprising:

[0005] Placing the plastic component in a placement position;

[0006] Driving the pressing assembly to fix the plastic component in the placement position;

[0007] Driving the detection assembly to abut against the plastic component and perform conduction detection;

[0008] Obtaining the detection result and analyzing whether the spring is installed in place;

[0009] If it is determined that the spring of the plastic component is installed in place, then ultrasonic welding is performed on the plastic component;

[0010] Wherein, the step of obtaining the detection result and analyzing whether the spring is installed in place comprises: if the first spring needle and the cooperating spring needle are not conductive, the second spring needle and the cooperating spring needle are conductive, and the third spring needle and the cooperating spring needle are not conductive, it is determined that the spring is installed in place, otherwise it is determined that the spring is not installed in place.

[0011] Further, the condition that the spring is not installed in place comprises:

[0012] If the first spring needle and the matching spring needle are in conduction, the second spring needle and the matching spring needle are in conduction, and the third spring needle and the matching spring needle are not in conduction, it is determined that the spring sheet is not installed in place; or,

[0013] If the first spring needle and the matching spring needle are not in conduction, the second spring needle and the matching spring needle are in conduction, and the third spring needle and the matching spring needle are in conduction, it is determined that the spring sheet is not installed in place; or,

[0014] If the first spring needle and the matching spring needle are in conduction, the second spring needle and the matching spring needle are in conduction, and the third spring needle and the matching spring needle are in conduction, it is determined that the spring sheet is not installed in place.

[0015] Further, the driving and pressing assembly fixing the plastic assembly in the placement position comprises: the second driving member driving the pressing block and the matching spring needle to move in the second direction, so that the pressing block abuts against the plastic member, and the matching spring needle abuts against the spring sheet.

[0016] Further, the driving and detection assembly abutting against the plastic assembly and conducting conduction detection comprises: the first driving member driving the first spring needle, the second spring needle and the third spring needle to move in the first direction, so that the first spring needle abuts against the first detection position, the second spring needle abuts against the second detection position, and the third spring needle abuts against the third detection position to conduct conduction detection.

[0017] Further, if it is determined that the spring sheet of the plastic assembly is not installed in place, unqualified product processing matters are performed on the plastic assembly.

[0018] A second object of the present application is to provide a device for detecting whether a spring sheet is in place, which is applied to the method for detecting whether the spring sheet of the plastic assembly is in place.

[0019] The rack has a placement position for placing the plastic assembly.

[0020] The detection assembly comprises a first driving member, a first spring needle, a second spring needle and a third spring needle, the first driving member is installed on the rack, and the first spring needle, the second spring needle and the third spring needle are connected with the first driving member.

[0021] The pressing assembly comprises a second driving member and a matching spring needle, the second driving member is installed on the rack, and the matching spring needle is connected with the second driving member.

[0022] The controller is electrically connected with the first spring needle, the second spring needle, the third spring needle and the matching spring needle, respectively.

[0023] The plastic assembly has a first detection position, a second detection position and a third detection position which are matched with the first elastic needle, the second elastic needle and the third elastic needle respectively.

[0024] Further, the plastic assembly comprises a plastic piece and an elastic piece, the plastic piece comprises a mounting groove, and the elastic piece is at least partially assembled in the mounting groove.

[0025] Further, the mounting groove is provided with a left block and a right block, the first detection position is arranged on the left block, the third detection position is arranged on the right block, and the second detection position is arranged between the left block and the right block.

[0026] When the elastic piece is installed in place, the elastic piece is characterized in that the first detection position is shielded by the left block, the third detection position is shielded by the right block, and the second detection position is exposed so that the second elastic needle can be contacted.

[0027] Further, the left block and the right block are both made of insulating material.

[0028] Further, the pressing assembly further comprises a pressing block, the pressing block is connected with the second driving piece, and the matched elastic needle is installed on the side of the pressing block away from the second driving piece.

[0029] The embodiment of the present application has the following beneficial effects:

[0030] The elastic piece in-place detection method of the plastic assembly in the embodiment can detect whether the elastic piece is installed in place before the plastic assembly is subjected to ultrasonic welding, on the one hand, the detection process is integrated into the assembly process, which is beneficial to improve the work efficiency and simplify the process, on the other hand, the defective products detected before the ultrasonic welding can be assembled again, which is beneficial to improve the recycling rate of the plastic assembly, reduce the defective product rate and avoid the problem that the defective products detected after the ultrasonic welding cannot be recycled but only scrapped. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0032] Figure 1 The flow chart of the elastic piece in-place detection method of the plastic assembly described in the embodiment of the present application;

[0033] Figure 2Structure schematic view of the in-place detection device according to the embodiment of the present application;

[0034] Figure 3 For Figure 2 Local enlarged schematic view at A in the middle;

[0035] Figure 4 Structure schematic view of the plastic assembly according to the embodiment of the present application;

[0036] Figure 5 Control principle diagram of the in-place detection device according to the embodiment of the present application.

[0037] Wherein: 100, in-place detection device; 110, rack; 111, placement position; 120, detection assembly; 121, first driving member; 122, first spring needle; 123, second spring needle; 124, third spring needle; 130, pressing assembly; 131, second driving member; 132, matched spring needle; 133, pressing block; 140, controller;

[0038] 200, plastic assembly; 210, plastic piece; 211, installation groove; 212, left stop block; 213, right stop block; 214, first protruding column; 215, second protruding column; 220, spring sheet; 230, first detection position; 240, second detection position; 250, third detection position. DETAILED DESCRIPTION

[0039] In order to facilitate the understanding of the present application, the present application will be described in more detail below with reference to the relevant drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0040] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein only for the purpose of describing specific embodiments and is not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0042] Please refer toFigures 1-5 This invention provides a method for detecting the positioning of the spring piece 220 in a plastic component 200, comprising:

[0043] Place the plastic component 200 in the placement position 111;

[0044] The driving pressing component 130 fixes the plastic component 200 located in the placement position 111; for example, the pressing component 130 presses down to fix the plastic component 200, so as to prevent the plastic component 200 from shaking when the detection component 120 is tested.

[0045] The drive detection component 120 abuts against the plastic component 200 and performs continuity detection;

[0046] Obtain the test results and analyze them to determine whether the spring clip 220 is installed in place;

[0047] If it is determined that the spring piece 220 of the plastic component 200 is installed in place, then the plastic component 200 is ultrasonically welded; specifically, in this embodiment, the plastic component 200 includes a plastic part 210 and a spring piece 220, such as Figure 4 As shown, a first protrusion 214 and a second protrusion 215 are formed on the plastic part 210, and a positioning hole that mates with the first protrusion 214 and the second protrusion 215 is formed on the spring piece 220. When the plastic assembly 200 is ultrasonically welded, the first protrusion 214 and the second protrusion 215 are melted by high temperature, so that the spring piece 220 is completely fixed to the plastic part 210. At this time, the spring piece 220 cannot be removed from the plastic part 210. Therefore, if the ultrasonic welding is performed and then tested, the defective products detected at this time can only be scrapped and cannot be disassembled and reassembled. If the finished product is forcibly disassembled, it will not only be time-consuming and laborious, but the plastic part 210 will also be unusable, and the spring piece 220 may also be deformed and unusable, resulting in a waste of resources.

[0048] The process of obtaining and analyzing the test results to determine whether the spring piece 220 is installed correctly includes: if the first spring pin 122 and the mating spring pin 132 are not connected, the second spring pin 123 and the mating spring pin 132 are connected, and the third spring pin 124 and the mating spring pin 132 are not connected, then the spring piece 220 is determined to be installed correctly; otherwise, the spring piece 220 is determined not to be installed correctly.

[0049] Please refer to Figure 1The spring piece 220 in-place detection method of the plastic assembly 200 in the embodiment, since the detection of whether the spring piece 220 is installed in place is performed before the ultrasonic welding of the plastic assembly 200, on the one hand, the detection process is integrated into the assembly process, which is beneficial to improve the work efficiency and simplify the process, on the other hand, the defective products detected before the ultrasonic welding can be assembled again, which is beneficial to improve the recycling rate of the plastic assembly 200, reduce the defective product rate, and avoid the problem that the defective products detected after the ultrasonic welding cannot be recycled and can only be scrapped.

[0050] Please refer to Figure 1 、 Figure 3 and Figure 4 In a possible implementation, the condition that the spring piece 220 is not installed in place includes:

[0051] If the first spring needle 122 and the cooperating spring needle 132 are in conduction, the second spring needle 123 and the cooperating spring needle 132 are in conduction, and the third spring needle 124 and the cooperating spring needle 132 are not in conduction, it is determined that the spring piece 220 is not installed in place; or,

[0052] If the first spring needle 122 and the cooperating spring needle 132 are not in conduction, the second spring needle 123 and the cooperating spring needle 132 are in conduction, and the third spring needle 124 and the cooperating spring needle 132 are in conduction, it is determined that the spring piece 220 is not installed in place; or,

[0053] If the first spring needle 122 and the cooperating spring needle 132 are in conduction, the second spring needle 123 and the cooperating spring needle 132 are in conduction, and the third spring needle 124 and the cooperating spring needle 132 are in conduction, it is determined that the spring piece 220 is not installed in place. Exemplarily, based on the structure of the product (the plastic assembly 200) of the application, it is caused that no matter whether the spring piece 220 is installed in place, the second spring needle 123 and the cooperating spring needle 132 will be in conduction, and in the case of installation in place, the first spring needle 122 and the second spring needle 123 will not be in conduction with the cooperating spring needle 132; if one or all of the first spring needle 122 and the second spring needle 123 are in conduction with the cooperating spring needle 132, it indicates that the spring piece 220 is not installed in place.

[0054] Please refer to Figure 1 、 Figure 2 and Figure 3In a possible implementation, the driving the pressing assembly 130 to fix the plastic component 200 in the placement position 111 includes: the second driving member 131 driving the pressing block 133 and the cooperating spring needle 132 to move in the second direction, so that the pressing block 133 abuts against the plastic piece 210, and the cooperating spring needle 132 abuts against the spring sheet 220. For example, the pressing block 133 is in a rectangular shape, and the pressing block 133 has a pressing surface, and the pressing surface abuts against the plastic piece 210, so that the plastic component 200 is fixed in the placement position 111 before the continuity test is performed, and meanwhile, the cooperating spring needle 132 abuts against the spring sheet 220, so as to prepare for the subsequent continuity test. The second driving member 131 drives the pressing block 133 and the cooperating spring needle 132 to move downward in the vertical direction.

[0055] Please refer to Figure 1 、 Figure 2 and Figure 3 In a possible implementation, the driving the detecting assembly 120 to abut against the plastic component 200 and perform the continuity test includes: the first driving member 121 driving the first spring needle 122, the second spring needle 123 and the third spring needle 124 to move in the first direction, so that the first spring needle 122 abuts against the first detection position 230, the second spring needle 123 abuts against the second detection position 240, and the third spring needle 124 abuts against the third detection position 250 to perform the continuity test. For example, the first direction is a horizontal direction, that is, the first direction and the second direction are arranged vertically. In addition, it should be noted that the first driving member 121 drives the first spring needle 122, the second spring needle 123 and the third spring needle 124 to move simultaneously.

[0056] In a possible implementation, if it is determined that the spring sheet 220 of the plastic component 200 is not installed in place, the unqualified product processing item is performed on the plastic component 200. For example, the unqualified product processing item includes an alarm prompt or unqualified product collection. In this embodiment, when it is detected that the spring sheet 220 is not installed in place, the production equipment automatically moves the unqualified product to a specific position, and the unqualified product is reassembled manually, or the unqualified product is separated into the plastic piece 210 and the spring sheet 220, and then is placed into the production equipment to be reassembled, continuity tested and ultrasonic welded.

[0057] Please refer to Figure 2 、 Figure 3 and Figure 4A second object of the present application is to provide a detection device 100 for implementing the above-mentioned detection method for the spring sheet 220 of the plastic component 200. The detection device 100 comprises a rack 110, a detection assembly 120, a pressing assembly 130, and a controller 140. The rack 110 has a placement position 111 for placing the plastic component 200. The detection assembly 120 comprises a first driving member 121, a first spring needle 122, a second spring needle 123, and a third spring needle 124. The first driving member 121 is installed on the rack 110, and the first spring needle 122, the second spring needle 123, and the third spring needle 124 are connected to the first driving member 121. The pressing assembly 130 comprises a second driving member 131 and a cooperating spring needle 132. The second driving member 131 is installed on the rack 110, and the cooperating spring needle 132 is connected to the second driving member 131. The controller 140 is electrically connected to the first spring needle 122, the second spring needle 123, the third spring needle 124, and the cooperating spring needle 132, respectively. The plastic component 200 has a first detection position 230, a second detection position 240, and a third detection position 250, which are respectively matched with the first spring needle 122, the second spring needle 123, and the third spring needle 124. Exemplarily, the first detection position 230, the second detection position 240, and the third detection position 250 are defined as the positions that are respectively contacted by the first spring needle 122, the second spring needle 123, and the third spring needle 124 during the conduction test. The controller 140 is responsible for driving the first driving member 121 (such as a pneumatic cylinder) and the second driving member 131, so as to realize the precise control of the spring needles and the pressing block 133. This includes controlling the movement of the spring needles so that they can correctly contact the detection positions on the plastic component 200, and controlling the pressing block 133 to ensure that the plastic component 200 remains stable during the detection process. The controller 140 receives the conduction signals from the first spring needle 122, the second spring needle 123, the third spring needle 124, and the cooperating spring needle 132, and judges whether the spring sheet 220 is installed in place according to these signals. It evaluates the position and state of the spring sheet 220 by detecting the electrical conduction of the contact points. According to the conduction information transmitted by the detection assembly 120, the controller 140 performs logical analysis to determine whether the spring sheet 220 of the plastic component 200 has been correctly assembled. If it is found that the spring sheet 220 is not installed in place, the controller 140 will guide the execution of the unqualified product processing matters.

[0058] Please refer to Figure 4 In a possible implementation, the plastic component 200 comprises a plastic piece 210 and a spring sheet 220. The plastic piece 210 comprises a mounting groove 211, and the spring sheet 220 is at least partially assembled in the mounting groove 211. Exemplarily, the mounting groove 211 is used for limiting and fixing the spring sheet 220, that is, the mounting groove 211 is one of the fixing positions of the spring sheet 220.

[0059] Please refer to Figure 3 and Figure 4In one possible implementation, the mounting groove 211 is provided with a left stopper 212 and a right stopper 213 outside, the first detection position 230 is arranged on the left stopper 212, the third detection position 250 is arranged on the right stopper 213, and the second detection position 240 is arranged between the left stopper 212 and the right stopper 213; when the elastic sheet 220 is installed in place, the elastic sheet 220 is characterized in that: the first detection position 230 is shielded by the left stopper 212, the third detection position 250 is shielded by the right stopper 213, and the second detection position 240 is exposed to enable the second elastic needle 123 to contact. Exemplarily, the left stopper 212 and the right stopper 213 jointly enclose the mounting groove 211, the installation in place mentioned above refers to that the elastic sheet 220 is inserted into the mounting groove 211 and the inserted elastic sheet 220 is located inside the left stopper 212 and the right stopper 213, that is, close to the side of the mounting groove 211, and the installation not in place mentioned above refers to that the elastic sheet 220 is not inserted into the mounting groove 211, and at this time the elastic sheet 220 is located outside the left stopper 212 and the right stopper 213, that is, away from the side of the mounting groove 211, and it can be understood that at this time the elastic sheet 220 will cover the left stopper 212 and the right stopper 213, that is, in the case that the elastic sheet 220 is installed in place, the first elastic needle 122 contacts the outside of the left stopper 212 and the third elastic needle 124 contacts the outside of the right stopper 213 during the continuity test, as shown in Figure 4 , at this time the elastic sheet 220 is located inside the mounting groove 211 and the elastic sheet 220 has been installed in place. In the case that the elastic sheet 220 is not installed in place, the first elastic needle 122 and the third elastic needle 124 contact the elastic sheet 220 during the continuity test, specifically, there can be three cases that only the elastic sheet 220 located at the first detection position 230 is shielded by the left stopper 212, or only the elastic sheet 220 located at the third detection position 250 is shielded by the right stopper 213, or the elastic sheet 220 located at the first detection position 230 is shielded by the left stopper 212 and the elastic sheet 220 located at the third detection position 250 is shielded by the right stopper 213, and the above three cases are all the cases that the elastic sheet 220 is not installed in place. As shown in Figure 3 , at this time the position of the elastic sheet 220 is located outside the mounting groove 211, that is, at this time the elastic sheet 220 is not installed in place.

[0060] Please refer to Figure 3 and Figure 4The main function of the left block 212 and the right block 213 is to assist in determining whether the spring sheet 220 of the plastic component 200 is installed in place. Specifically, they detect the position of the spring sheet 220 by cooperating with the detection component 120. In the detection process of the plastic component 200, the left block 212 and the right block 213 are respectively arranged outside the installation groove 211 to position the spring sheet 220. When the spring sheet 220 is installed in place, the spring sheet 220 will be blocked by the left block 212 at the first detection position 230, and at the same time, it will be blocked by the right block 213 at the third detection position 250, while being exposed at the second detection position 240 to enable the second spring needle 123 to contact. Through this positioning method, it can be ensured that the spring sheet 220 is in the correct position for conduction detection, thereby improving the accuracy and reliability of the detection.

[0061] Exemplarily, the main invention point of the present application is to utilize the structural characteristics of the product itself, that is, when the spring sheet 220 is correctly installed in the installation groove 211, the first detection position 230 is blocked by the left block 212, the third detection position 250 is blocked by the right block 213, and only the second detection position 240 is exposed. This feature uses the conduction test to accurately determine the installation of the spring sheet 220. Compared with using a visual camera, the scheme of the present application will not misjudge the situation, which is beneficial to improve the accuracy of the detection, and the cost is relatively low.

[0062] In a possible implementation, the left block 212 and the right block 213 are both made of insulating materials. Exemplarily, the conduction test scheme of the present application needs to realize that when the spring needle contacts the left block 212 and the right block 213, it does not conduct, and when the spring needle spring sheet 220 contacts, it conducts, so as to determine the installation position of the spring sheet 220. Through a simple and direct method, it is determined whether the spring sheet 220 is installed in place. In order to achieve this purpose, it is necessary to set the left block 212 and the right block 213 as non-conductive.

[0063] Please refer to Figure 2 , Figure 3 and Figure 4 In a possible implementation, the pressing assembly 130 further comprises a pressing block 133, the pressing block 133 is connected with the second driving member 131, and the spring needle 132 is installed on the side of the pressing block 133 away from the second driving member 131. Exemplarily, the first driving member 121 and the second driving member 131 are both air cylinders, which can provide accurate stroke and speed control, which is crucial for ensuring the correct contact of the spring needle with the detection position and the stable fixation of the pressing block 133 to the plastic component 200. The air cylinder has a fast response time and can be quickly started and stopped, which helps to improve the efficiency of the entire detection process. In addition, compared with other types of drivers, the air cylinder generally has a lower initial investment cost and operating cost, making the entire in-place detection device 100 more economical and efficient.

[0064] The above embodiments only express several implementation manners of the present application, which are described in a more specific and detailed manner, but cannot be understood as a limitation on the patent application scope. It should be noted that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A method for detecting the position of a spring in a plastic assembly, comprising: The method comprises the following steps: placing the plastic component in a placement position; driving a pressing assembly to fix the plastic component in the placement position; driving a detection assembly to abut against the plastic component and conduct continuity detection; obtaining a detection result and analyzing whether the spring is installed in place; if it is determined that the spring of the plastic component is installed in place, performing ultrasonic welding on the plastic component; wherein the step of obtaining a detection result and analyzing whether the spring is installed in place comprises: if the first contact spring and the matched contact spring are not in continuity, the second contact spring and the matched contact spring are in continuity, and the third contact spring and the matched contact spring are not in continuity, it is determined that the spring is installed in place; otherwise, it is determined that the spring is not installed in place; the case that the spring is not installed in place comprises: if the first contact spring and the matched contact spring are in continuity, the second contact spring and the matched contact spring are in continuity, and the third contact spring and the matched contact spring are not in continuity, it is determined that the spring is not installed in place; or if the first contact spring and the matched contact spring are not in continuity, the second contact spring and the matched contact spring are in continuity, and the third contact spring and the matched contact spring are in continuity, it is determined that the spring is not installed in place; or if the first contact spring and the matched contact spring are in continuity, the second contact spring and the matched contact spring are in continuity, and the third contact spring and the matched contact spring are in continuity, it is determined that the spring is not installed in place.

2. The method of claim 1, wherein The step of driving the pressing assembly to fix the plastic component in the placement position comprises: driving a second driving member to drive a pressing block and a matched contact spring to move in a second direction, so that the pressing block abuts against the plastic component and the matched contact spring abuts against the spring.

3. The method of claim 2, wherein the step of detecting the position of the spring is performed by a sensor. The step of driving the detection assembly to abut against the plastic component and conduct continuity detection comprises: driving a first driving member to drive a first contact spring, a second contact spring and a third contact spring to move in a first direction, so that the first contact spring abuts against a first detection position, the second contact spring abuts against a second detection position, and the third contact spring abuts against a third detection position to conduct continuity detection.

4. The method of claim 1, wherein if it is determined that the spring of the plastic component is not installed in place, performing unqualified product processing on the plastic component.

5. A device for detecting the presence of an object, characterized in that The method for detecting whether the spring of the plastic component is installed in place comprises: a rack having a placement position for placing the plastic component; a detection assembly comprising a first driving member, a first contact spring, a second contact spring and a third contact spring, wherein the first driving member is installed on the rack, and the first contact spring, the second contact spring and the third contact spring are connected with the first driving member; a pressing assembly comprising a second driving member and a matched contact spring, wherein the second driving member is installed on the rack, and the matched contact spring is connected with the second driving member; a controller electrically connected with the first contact spring, the second contact spring, the third contact spring and the matched contact spring respectively; the plastic component has a first detection position, a second detection position and a third detection position matched with the first contact spring, the second contact spring and the third contact spring respectively.

6. The in-place detection apparatus of claim 5, wherein The plastic component comprises a plastic component and a spring, and the plastic component comprises a mounting groove, and the spring is at least partially assembled in the mounting groove.

7. The in-place detection device of claim 6, wherein, The left block and the right block are arranged outside the mounting groove, the first detection position is arranged on the left block, the third detection position is arranged on the right block, and the second detection position is arranged between the left block and the right block. When the elastic sheet is installed in place, the elastic sheet is characterized in that the first detection position is shielded by the left block, the third detection position is shielded by the right block, and the second detection position is exposed so that the second elastic needle can be contacted.

8. The in-place detection apparatus of claim 7, wherein The left block and the right block are both made of insulating material.

9. The in-place detection apparatus of claim 5, wherein The pressing assembly further comprises a pressing block connected with the second driving member, and the matched elastic needle is arranged on the side of the pressing block away from the second driving member.

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