A mistake proofing mechanism for brake pad noise damper packaging line

Abstract

The utility model relates to brake pad assembly technical field especially a mistake proofing mechanism for brake pad sound elimination piece packaging line. Include: stand, install in the one side of conveyer belt, and the conveyer belt is used for conveying the brake pad of waiting for detecting, horizontal rod, horizontal installation is in the stand and its free end is located above the conveyer belt, probe, its one end rotationally installs in horizontal rod, and the other end free end is located directly above the conveyer belt under the action of gravity, proximity switch, its opposite fixed installation with horizontal rod, inductive sheet, its opposite fixed installation with probe, the free end between probe and conveyer belt spacing is for the brake pad to pass, when the sound elimination piece on the brake pad upper surface sticks more than one piece, probe carries out rotation, the cooperation of proximity switch and inductive sheet realizes the detection to probe displacement, is used to solve the technical problem of high detection efficiency and detection cost that exists universally when detecting the brake pad sound elimination piece mistake proofing detection in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of brake pad assembly technology, and in particular to an error prevention mechanism for brake pad muffler packaging lines. Background Technology

[0002] The descriptions in this section are provided only as background information relating to this disclosure and do not constitute prior art.

[0003] Applying noise-reducing sheets is a necessary step in brake pad assembly, primarily to address brake noise issues and positively impacting the smooth operation of the braking system and component lifespan. In brake pad packaging lines, noise-reducing sheets are typically stored in stacks. When applying them, a sheet needs to be taken and attached to the brake pad. However, because these sheets are relatively thin (approximately 1mm each), it's easy to mistake two sheets stuck together for one, resulting in two layers of noise-reducing sheets on the brake pad, hindering subsequent processes. Conventional inspection methods rely on manual visual inspection, which is susceptible to visual fatigue, cannot guarantee 100% detection of defective products, and suffers from poor accuracy and low efficiency. Furthermore, existing industrial cameras used in packaging lines typically photograph and verify product documentation, failing to assess the thickness of the noise-reducing sheets on the side of the brake pad.

[0004] Existing technologies for detecting and identifying defects such as excess sound-absorbing pads on brake pad packaging lines still have many problems, such as: high miss rate, low detection efficiency, and poor detection accuracy of manual inspection; due to the thinness of the sound-absorbing pads, it is difficult to use industrial cameras to inspect the sides of the brake pads, and the detection equipment is expensive. Utility Model Content

[0005] The purpose of this utility model is to provide an error prevention mechanism for brake pad muffler packaging lines, which solves the technical problems of high detection efficiency and high detection cost that are common in the existing technology for error prevention detection of brake pad mufflers.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An error-proofing mechanism for a brake pad muffler packaging line includes:

[0008] The column is installed on one side of the conveyor belt, which is used to transport the brake pads to be tested;

[0009] A horizontal bar is installed horizontally on a column with its free end positioned above the conveyor belt.

[0010] The probe is rotatably mounted on a horizontal bar at one end, while the other free end is positioned directly above the conveyor belt under its own weight.

[0011] A proximity switch, which is fixedly installed relative to a horizontal bar;

[0012] The sensing element is fixedly mounted relative to the probe.

[0013] The gap between the free end of the probe and the conveyor belt allows the brake pads to pass through. When more than one silencing sheet is attached to the upper surface of the brake pad, the probe rotates. The proximity switch works in conjunction with the sensing sheet to detect the displacement of the probe.

[0014] Furthermore, the probe includes a sleeve and a needle. The sleeve is fitted onto a horizontal rod, and retaining rings fitted onto the horizontal rod are respectively provided on both sides of the sleeve. The retaining rings are used to axially limit the sleeve.

[0015] Furthermore, a needle roller bearing is fitted between the sleeve and the horizontal rod, and the sensing plate is mounted on the top of the sleeve and is configured to cooperate with the sensing head of the proximity switch.

[0016] Furthermore, the probe includes a straight connecting part connected to the sleeve, a conical part connected to the straight connecting part through a constricted part, and a pointed part set at the bottom of the conical part. The straight connecting part is cylindrical, the conical part is a tapered structure with a gradually decreasing cross-section that is thicker at the top and thinner at the bottom, the constricted part is an arc-shaped structure connecting the straight connecting part and the conical part, and the pointed part is a sharp corner structure set at the bottom of the conical part.

[0017] Furthermore, the length of the straight connection is K, the distance from the junction of the constricted portion and the straight connection to the lowest point of the tip is H, the distance from the junction of the constricted portion and the cone to the lowest point of the tip is L, the length of the tip is M, the radius of the arc of the constricted portion is R, the diameter of the junction of the constricted portion and the cone is X, the diameter of the junction of the cone and the tip is Y, and the diameter of the lowest point of the tip is N, where: K = H = 2R, 1.1L < H < 1.3L, 20M < L < 22M, 2.8Y < X < 3.3Y, 7N < Y < 9N.

[0018] Furthermore, a horizontal support seat and a vertical support seat are installed between the horizontal rod and the column. The horizontal support seat is fixedly installed relative to the column, the vertical support seat is horizontally slidably installed on the horizontal support seat, and the base of the horizontal rod is vertically slidably installed on the vertical support seat.

[0019] Furthermore, the vertical support base and the horizontal support base are relatively slidably installed together by means of a screw and nut pair, and the vertical support base and the base of the horizontal rod are relatively slidably installed together by means of a screw and nut pair.

[0020] Furthermore, the lead screw and nut assembly is driven by an electric motor or a handwheel.

[0021] Furthermore, it also includes an audible and visual alarm, which is linked to a proximity switch to trigger an audible and visual alarm when a faulty product is detected.

[0022] Furthermore, it also includes a reset button, which is electrically connected to the audible and visual alarm to stop the alarm from working.

[0023] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0024] (1). By setting a probe and cooperating with a proximity switch, when there is more than one silencing sheet pasted on the upper surface of the brake pad, the brake pad will drive the probe to swing when it passes through the probe, which in turn drives the sensing sheet to swing. The sensing sheet and the proximity switch cooperate to make the proximity switch output an electrical signal. The electrical signal drives the sound and light alarm to light up and sound an alarm, which serves to notify the operator. This avoids the phenomenon of missed detection that is easy to occur in traditional manual visual inspection, and improves the detection accuracy and detection efficiency.

[0025] (2). This utility model improves the sensitivity of rotation between the probe and the horizontal rod by setting a needle roller bearing between the probe and the horizontal rod; by limiting the specific shape and size of the probe, it ensures that the center of gravity of the probe is biased upward under normal conditions, and it is easier to swing when encountering a defective product, avoiding the phenomenon that a larger force is required to swing when the center of gravity is biased downward, thus greatly improving the sensitivity; by setting a horizontal support seat and a vertical support seat, the horizontal and vertical positions of the probe can be adjusted, making it more applicable. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a top view of the structure of this utility model;

[0028] Figure 3 for Figure 2 A partial cross-sectional view of section AA in the middle;

[0029] Figure 4 This is a schematic diagram of the probe's main structure.

[0030] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point B in the middle;

[0031] Figure 6 for Figure 3 A magnified schematic diagram of the structure at point C.

[0032] In the diagram: 100, conveyor belt; 200, brake pad; 201, silencer; 300, error prevention mechanism; 301, column; 302, horizontal support; 303, vertical support; 304, horizontal bar; 305, base; 305, proximity switch; 3051, sensing element; 306, probe; 3061, sleeve; 3062, direct connection part; 3063, constricted part; 3064, cone part; 3065, pointed part; 307, retaining ring. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent.

[0035] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0036] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0037] In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] Furthermore, in the description of this application, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0039] To address the limitations of existing technologies, this embodiment provides a technical solution. The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0040] This utility model primarily addresses the issue of multiple layers being glued together when attaching the muffler 201 to brake pads 200 in existing technologies. Currently, there is no better method than manual visual inspection, but manual inspection is prone to omissions, resulting in defective products not being fully detected and affecting subsequent production and packaging processes for the brake pads 200. To address the problems of the existing technology, the technical solution of this utility model is as follows.

[0041] See appendix Figure 1-3An error prevention mechanism 300 for a brake pad 200 muffler 201 packaging line, wherein error prevention can be understood as preventing erroneous products with multiple layers of muffler 201 pasted on the brake pad 200 from entering the next process. The error-proofing mechanism 300 includes: a column 301, installed on one side of the conveyor belt 100, which transports the brake pads 200 to be tested. The column 301 can be understood as a column-shaped support, installed on one side of the conveyor belt 100. Brake pads 200 with the applied sound-absorbing sheet 201 are transported on the conveyor belt 100. During transport, the error-proofing mechanism 300 detects whether there are defective products with multiple layers of sound-absorbing sheet 201 applied. The error-proofing mechanism 300 also includes a horizontal rod 304, horizontally installed on the column 301 with its free end above the conveyor belt 100. The horizontal rod 304 is chrome-plated, and its free end is the end of the horizontal rod 304 furthest from the column 301. A probe 306 is rotatably mounted on the horizontal rod 304 at one end, and its free end is positioned directly above the conveyor belt 100 under its own weight. The design principle of the probe 306 is explained below. Yes, under normal conditions without force, the bottom of probe 306 is a free end and is vertical under its own weight. When the silencing sheet 201 on the brake pad 200 that passes with the conveyor belt 100 is pasted in more than one layer, the height of the silencing sheet 201 will be higher than the height of the normal product. At this time, the upper surface of the brake pad 200 will come into contact with the bottom of probe 306, causing probe 306 to rotate around horizontal rod 304. Proximity switch 305 is fixedly installed relative to horizontal rod 304, and sensing plate 3051 is fixedly installed relative to probe 306. It can be understood that the sensing head of proximity switch 305 and sensing plate 3051 cooperate. When sensing plate 3051 moves, proximity switch 305 will generate an electrical signal. When sensing plate 3051 does not move, proximity switch 305 will not generate an electrical signal. The application of proximity switch 305 is relatively mature in existing technology, and will not be elaborated on here. The gap between the free end of the probe 306 and the conveyor belt 100 allows the brake pad 200 to pass through. When more than one silencing sheet 201 is attached to the upper surface of the brake pad 200, the probe 306 rotates. The proximity switch 305 works in conjunction with the sensing sheet 3051 to detect the displacement of the probe 306. Here, the free end of the probe 306 is the lowest end of the probe 306.

[0042] See appendix Figure 4 and attached Figure 5The probe 306 includes a sleeve 3061 and a needle portion. The sleeve 3061 is fitted onto a horizontal rod 304, and retaining rings 307, fitted onto the horizontal rod 304, are respectively provided on both sides of the sleeve 3061. The retaining rings 307 are used to axially limit the sleeve 3061. It can be understood that the retaining rings 307 are fitted onto the horizontal rod 304 and tightened by radially installed screws to achieve a relatively fixed installation between the retaining rings 307 and the horizontal rod 304. A needle roller bearing is fitted between the sleeve 3061 and the horizontal rod 304. The purpose of installing the needle roller bearing is to reduce the frictional force during rotation between the probe 306 and the horizontal rod 304, thereby improving the sensitivity of the probe 306. (See appendix) Figure 6 The sensing element 3051 is mounted on the top of the sleeve 3061 and is configured to cooperate with the sensing head of the proximity switch 305. Here, the sensing element 3051 is an L-shaped metal sheet. The needle part of the probe 306 includes a straight connecting part 3062 connected to the sleeve 3061, a conical part 3064 connected to the straight connecting part 3062 through a constricted part 3063, and a pointed part 3065 disposed at the bottom end of the conical part 3064. It can be understood that the straight connecting part 3062, the constricted part 3063, the conical part 3064, and the pointed part 3065 are connected sequentially. The straight connecting part 3062 is cylindrical, the conical part 3064 is a tapered structure with a gradually decreasing cross-section, the constricted part 3063 is an arc-shaped structure connecting the straight connecting part 3062 and the conical part 3064, and the pointed part 3065 is a sharp corner structure disposed at the bottom end of the conical part 3064. Specifically, the length of the straight connecting portion 3062 is K, the distance from the junction of the constricted portion 3063 and the straight connecting portion 3062 to the lowest point of the tip portion 3065 is H, the distance from the junction of the constricted portion 3063 and the tapered portion 3064 to the lowest point of the tip portion 3065 is L, the length of the tip portion 3065 is M, the radius of the arc of the constricted portion 3063 is R, the diameter of the junction of the constricted portion 3063 and the tapered portion 3064 is X, the diameter of the junction of the tapered portion 3064 and the tip portion 3065 is Y, and the diameter of the lowest point of the tip portion 3065 is N, where: K = H = 2R, 1.1L < H < 1.3L, 20M < L < 22M, 2.8Y < X < 3.3Y, 7N < Y < 9N, preferably, H = 1.2L, L = 21M, X = 3Y, Y = 8N. By limiting the dimensions of each part of the probe 306, it is beneficial to ensure that the center of gravity of the probe 306 is in a higher position, thereby improving the sensitivity of the probe 306. If the dimensions are not within the range, the center of the probe 306 will be too low, which will easily lead to a larger swing driving force required for the probe 306, resulting in the probe 306 being insensitive and affecting the accuracy of the detection results.

[0043] See appendix Figure 1A horizontal support seat 302 and a vertical support seat 303 are installed between the horizontal rod 304 and the column 301. Specifically, the horizontal support seat 302 is fixedly installed relative to the column 301, which can be understood as using welding or screw installation methods. The vertical support seat 303 is horizontally slidably installed on the horizontal support seat 302, and the base 3041 of the horizontal rod 304 is vertically slidably installed on the vertical support seat 303. The vertical support seat 303 and the horizontal support seat 302 are relatively slidably installed relative to each other through a screw and nut pair, and the vertical support seat 303 and the base 3041 of the horizontal rod 304 are also relatively slidably installed relative to each other through a screw and nut pair. The screw and nut pair is driven by an electric motor or a handwheel. It can be understood that the purpose of setting up the horizontal support seat 302 and the vertical support seat 303 is to realize the horizontal movement and vertical adjustment of the probe 306. The structure of realizing equipment displacement through a screw and nut pair is a common technology in the prior art, which will not be elaborated on here.

[0044] In addition, the error-proofing mechanism 300 of this application also includes an audible and visual alarm, which is linked to the proximity switch 305 to trigger an audible and visual alarm when a faulty product occurs. It also includes a reset button, which is electrically connected to the audible and visual alarm to stop its operation. It can be understood that the audible and visual alarm functions by sounding and lighting an alarm upon receiving a signal. The signal for the audible and visual alarm originates from the electrical signal of the proximity switch 305, which is generated by the action of the sensing element 3051. The action of the sensing element 3051 is generated by the movement of the probe 306 when the faulty brake pad 200 passes by.

[0045] When using the error-proofing mechanism 300 of this utility model, the position of the probe 306 should be adjusted in advance according to the thickness of the brake pad 200 after one layer of sound-absorbing sheet 201 is attached. In principle, the distance between the lowest point of the probe 306 and the upper surface of the conveyor belt 100 should be greater than the sum of the thickness of the brake pad 200 and the thickness of one layer of sound-absorbing sheet 201, and less than the sum of the thickness of the brake pad 200 and the thickness of two layers of sound-absorbing sheet 201. After the sound-absorbing sheet 201 is attached, the brake pad 200 passes directly under the probe 306 along with the conveyor belt 100. When the brake pad 200 is properly attached to the sound-absorbing sheet 201, the probe 306... The proximity switch 305 will not be triggered because the probe 306 will not be touched by the silencing sheet 201 on the upper surface of the brake pad 200. When two or more layers of silencing sheet 201 are attached to the brake pad 200, the probe 306 will be touched by the silencing sheet 201 on the upper surface of the brake pad 200. The sensing sheet 3051 will swing with the probe 306, triggering the proximity switch 305 and sending an electrical signal, which in turn triggers the audible and visual alarm to sound and light an alarm. When the operator triggers the reset button, the audible and visual alarm will stop. This helps to avoid the situation where the operator is not on site and therefore does not receive the alarm information and thus fails to detect the problem product.

[0046] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mistake-proofing mechanism for a brake pad muffler packaging line, characterized in that, A column (301) is installed on one side of the conveyor belt (100), which is used to transport the brake pads (200) to be tested; A horizontal bar (304) is horizontally mounted on a column (301) with its free end located above the conveyor belt (100); The probe (306) has one end rotatably mounted on the horizontal rod (304), and the other end is free and located directly above the conveyor belt (100) under its own weight. A proximity switch (305) is fixedly mounted relative to a horizontal rod (304); The sensing element (3051) is fixedly mounted relative to the probe (306); The gap between the free end of the probe (306) and the conveyor belt (100) allows the brake pad (200) to pass through. When more than one silencing sheet (201) is pasted on the upper surface of the brake pad (200), the probe (306) rotates. The proximity switch (305) works in conjunction with the sensing sheet (3051) to detect the displacement of the probe (306).

2. The error-proofing mechanism for a brake pad muffler packaging line according to claim 1, characterized in that, The probe (306) includes a sleeve (3061) and a needle. The sleeve (3061) is fitted onto a horizontal rod (304), and retaining rings (307) fitted onto the horizontal rod (304) are respectively provided on both sides of the sleeve (3061). The retaining rings (307) are used to axially limit the sleeve (3061).

3. The error-proofing mechanism for a brake pad muffler packaging line according to claim 2, characterized in that, A needle roller bearing is fitted between the sleeve (3061) and the horizontal rod (304), and the sensing plate (3051) is installed on the top of the sleeve (3061) and is configured to cooperate with the sensing head of the proximity switch (305).

4. The error-proofing mechanism for a brake pad muffler packaging line according to claim 3, characterized in that, The probe (306) includes a straight connecting part (3062) connected to the sleeve (3061), a conical part (3064) connected to the straight connecting part (3062) through a constriction part (3063), and a pointed part (3065) disposed at the bottom end of the conical part (3064). The straight connecting part (3062) is cylindrical, the conical part (3064) is a tapered structure with a gradually decreasing cross-section, the constriction part (3063) is an arc-shaped structure connecting the straight connecting part (3062) and the conical part (3064), and the pointed part (3065) is a sharp corner structure disposed at the bottom end of the conical part (3064).

5. The error-proofing mechanism for a brake pad muffler packaging line according to claim 4, characterized in that, The length of the straight connecting part (3062) is K, the distance from the junction of the constricted part (3063) and the straight connecting part (3062) to the lowest end of the tip part (3065) is H, the distance from the junction of the constricted part (3063) and the cone part (3064) to the lowest end of the tip part (3065) is L, the length of the tip part (3065) is M, the radius of the arc of the constricted part (3063) is R, the diameter of the junction of the constricted part (3063) and the cone part (3064) is X, the diameter of the junction of the cone part (3064) and the tip part (3065) is Y, and the diameter of the lowest end of the tip part (3065) is N, where: K = H = 2R, 1.1L < H < 1.3L, 20M < L < 22M, 2.8Y < X < 3.3Y, 7N < Y < 9N.

6. A fault-prevention mechanism for a brake pad muffler packaging line according to any one of claims 1-5, characterized in that, A horizontal support base (302) and a vertical support base (303) are installed between the horizontal rod (304) and the column (301). The horizontal support base (302) is fixedly installed relative to the column (301). The vertical support base (303) is horizontally slidably installed on the horizontal support base (302). The base (3041) of the horizontal rod (304) is vertically slidably installed on the vertical support base (303).

7. The error-proofing mechanism for a brake pad muffler packaging line according to claim 6, characterized in that, The vertical support base (303) and the horizontal support base (302) are relatively slidably installed together by means of a screw and nut pair, and the vertical support base (303) and the base (3041) of the horizontal rod (304) are relatively slidably installed together by means of a screw and nut pair.

8. The error-proofing mechanism for a brake pad muffler packaging line according to claim 7, characterized in that, The lead screw and nut assembly is driven by an electric motor or a handwheel.

9. The error-proofing mechanism for a brake pad muffler packaging line according to claim 8, characterized in that, It also includes an audible and visual alarm that is linked to a proximity switch (305) to provide an audible and visual alarm when a defective product is detected.

10. The error-proofing mechanism for a brake pad muffler packaging line according to claim 9, characterized in that, It also includes a reset button, which is electrically connected to the audible and visual alarm to stop the alarm from working.

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