Mistake proofing device for threaded fastener

Abstract

The utility model relates to an error-proofing device for a threaded fastener, which comprises a seat body used for being attached to a feeding device, and is characterized by further comprising a placing piece and a detecting piece which is arranged on the seat body and provides a detecting space, the placing piece is connected with a driving source on the seat body so as to advance and enter the detecting space together with the threaded fastener to be detected, and the detecting piece is arranged on the seat body. The device further comprises a processing module in signal connection with the feeding equipment, the detection piece is provided with a sensor assembly in signal connection with the processing module, when the placement piece and the to-be-detected threaded fastener enter the detection space, the sensor assembly detects size data of the to-be-detected threaded fastener, and if the size data is correct, the to-be-detected threaded fastener is detected. The error-proofing device has the advantages that the placing piece of the error-proofing device and the threaded fastener to be detected enter the detection space to be detected, and the feeding equipment can be started only if the size data of the threaded fastener to be detected are correct, so that the model error of the threaded fastener is avoided before the threaded fastener is fed into the feeding equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of threaded fastener assembly, especially to a mistake-proofing device for avoiding model error of threaded fastener when feeding. BACKGROUND

[0002] Threaded fastener is one of the most commonly used connectors when assembling parts, and is used on almost all mechanical equipment. However, there are many threaded fasteners of different models but similar sizes in actual use. It is difficult for workers to accurately determine the model of threaded fastener by observation alone, and it is easy to misuse the wrong model when feeding into the feeding equipment, resulting in misassembly of threaded fastener and making subsequent assembly difficult, especially for threaded fasteners such as riveted studs, nuts, etc. that cannot be disassembled, which will cause great loss once misassembled.

[0003] Therefore, in order to avoid misassembly of threaded fastener, the mistake-proofing device provided in the Chinese utility model patent No. CN202323392328.6 (publication No. CN221790186U) "nut riveting mistake-proofing device" exists in the prior art. The above-mentioned mistake-proofing device includes a detection piece capable of extending into the inner hole of the nut to be detected, thereby realizing rapid detection of whether the riveting nut is misassembled, and timely discovering the misassembly to prevent the misassembled parts from flowing out.

[0004] However, the above-mentioned mistake-proofing device still has the following defects: first, the mistake-proofing device is used to detect the threaded fastener that has been installed, and cannot determine whether the nut model used for feeding is correct before feeding; second, the mistake-proofing device is only for the inner hole of the nut, and cannot detect the external features of the threaded fastener, i.e. the head and protruding part features of the threaded fastener, wherein the head is for example the bolt head of a bolt or the flange surface of a nut, and the protruding part is for example the stud of a bolt or the boss of a nut, etc. Therefore, further improvement is needed for the prior art. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem of the above-mentioned prior art, and provides a mistake-proofing device that can avoid model error of threaded fastener before feeding into the feeding equipment.

[0006] The utility model adopts the technical scheme for solving the above-mentioned technical problem: the mistake-proofing device for threaded fastener, including the seat body for attaching to the feeding equipment, characterized in that further comprising:

[0007] The placing piece is used for placing the threaded fastener to be detected;

[0008] The detection piece is located on the seat body and is provided with a detection space for accommodating the placing piece and the threaded fastener to be detected;

[0009] A driving source is arranged on the seat body and connected with the placing member, so as to drive the placing member to advance together with the thread fastener to be detected into the detection space;

[0010] A processing module is connected with the feeding device;

[0011] The detection member is provided with a sensor assembly connected with the processing module, and the sensor assembly can detect the size data of the thread fastener to be detected when the placing member together with the thread fastener to be detected enters the detection space, and the processing module controls the feeding device to open if the size data of the thread fastener to be detected is correct.

[0012] In order to realize that the placing member can place the thread fastener to be detected and can move together with the thread fastener to be detected, preferably, the upper surface of the placing member is provided with a through hole through which the convex part of the thread fastener to be detected passes, and the through hole is at least partially formed with a flange for placing the head of the thread fastener to be detected in a radially inward convex manner. As known, common thread fasteners to be detected such as bolts and even part of nuts with bosses are difficult to be directly and stably placed on a plane, therefore, in the present scheme, the head of the thread fastener to be detected is placed through the through hole and the flange structure, and at the same time, the convex part of the thread fastener to be detected can also pass through the through hole, so as to realize the stable placement of the thread fastener to be detected and not affect the detection of the convex part passing through the through hole.

[0013] In order to detect the height data of the head of the thread fastener to be detected, preferably, the upper surface of the placing member is at least partially recessed downward to the upper surface of the flange to form a notch for exposing the head of the thread fastener to be detected, and correspondingly, the sensor assembly comprises a first sensor corresponding to the notch, so as to realize the detection of the height data of the head of the thread fastener to be detected. The head of the thread fastener to be detected is, for example, the bolt head of a bolt or the flange surface of a nut, and actually, in the present scheme, if the height of the head is too high, it cannot enter the above-mentioned detection space for detection, that is, the case of too high head is pre-screened, and further, by providing the notch, the height data of the head can be observed on the side surface of the head, so as to be detected by the first sensor pre-set, and the first sensor can be selected from common sensors such as infrared sensors and laser sensors.

[0014] In order to enable the placement piece to enter the detection space, preferably, the placement piece is in a block shape, and the detection space comprises a first space adapted to the placement piece, and the driving source is used to drive the placement piece to enter the first space. Such design is made in consideration of the fact that the protrusion of the part of the threaded fastener to be detected is short, and there is a case where the threaded fastener to be detected does not exceed the lower surface of the placement piece even though it passes through the through hole. In this case, the detection space only needs to be provided with the first space adapted to the placement piece. However, if the threaded fastener to be detected is a bolt or the like with a long protrusion, the detection space also needs to comprise other parts.

[0015] Further, in order to detect the protrusion of the threaded fastener to be detected, preferably, the detection space further comprises a second space in communication with the first space, and the second space extends downward from the center of the first space to accommodate the protrusion of the threaded fastener to be detected. Correspondingly, the sensor assembly comprises a second sensor aligned with the second space, so as to detect the length and / or diameter data of the protrusion of the threaded fastener to be detected. The first space and the second space form a detection space with a cross section like T shape. The detection space can be understood as a profiling space adapted to the threaded fastener to be detected such as a bolt with a long protrusion. The protrusion passes through the through hole and enters the second space, so that the length and / or diameter data of the protrusion can be detected by the second sensor arranged in the second space. In terms of length, a sensor for detecting the distance upward can be arranged at the bottom of the second space, or a photoelectric opposite-acting sensor for judging whether the length of the protrusion is correct can be arranged at a preset position. The photoelectric opposite-acting sensor can also judge the diameter data of the protrusion.

[0016] In order to detect the length and / or diameter data of the protrusion, preferably, the second sensor is located on the side surface of the detection piece perpendicular to the advancing direction of the placement piece, and a preset distance is left between the second sensor and the upper surface of the flange. Correspondingly, a channel is arranged on the detection piece to enable the second sensor to communicate with the second space. In the production process, there are not too many types of threaded fasteners to be detected. For example, only the length of the protrusion is different among the threaded fasteners to be detected, and only the threaded fastener to be detected with a protrusion of a specific length needs to be identified in this operation. First, as mentioned above, if the head is consistent, the protrusion is too long to enter the preset second space, and the protrusion is too short to be detected by the second sensor. The preset distance left between the second sensor and the upper surface of the flange is the length required by the protrusion of the threaded fastener to be detected. Therefore, once the protrusion is detected by the second sensor, it means that the length of the protrusion is correct. The diameter data of the protrusion can also be detected according to actual needs.

[0017] In order to make the preset distance between the second sensor and the upper surface of the flange better adaptable, preferably, the channel extends upward from the lower part of the second space, and correspondingly, the detection piece is further provided with an adjusting mechanism connected with the second sensor, so as to adjust the preset distance between the second sensor and the upper surface of the flange. The adjustable preset distance means that it can be more flexible to adjust according to the needs, and adapt to more thread fasteners to be detected.

[0018] Further, in order to realize that the adjusting mechanism can adjust the above-mentioned preset distance, preferably, the adjusting mechanism comprises an adjusting platform extending at least partially from the upper end of the detection piece to the second sensor, and a adjusting piece is screwed on the adjusting platform, and the lower end of the adjusting piece is connected with the second sensor.

[0019] Compared with the prior art, the error-proof device has the advantages that the placing piece is used to place the thread fastener to be detected, the placing piece can enter the detection space of the detection piece together with the thread fastener to be detected, and the detection piece is provided with a sensor assembly connected with the processing module for detection. Only when the size data of the thread fastener to be detected is correct, the feeding equipment can be opened, so that the model error of the thread fastener can be avoided before feeding the feeding equipment. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic view of the error-proof device in the embodiment 1 of the utility model;

[0021] Figure 2 It is a structural schematic view of the error-proof device in the embodiment 1 of the utility model from another angle;

[0022] Figure 3 It is a partial explosion structural schematic view of the error-proof device in the embodiment 1 of the utility model;

[0023] Figure 4 It is a structural schematic view of the error-proof device in the embodiment 1 of the utility model from another angle;

[0024] Figure 5 It is a connection structural schematic view of the driving source and the placing piece in the embodiment 1 of the utility model;

[0025] Figure 6 It is a state schematic view of the placing piece entering the detection space in the embodiment 1 of the utility model;

[0026] Figure 7 It is a structural schematic view of the error-proof device in the embodiment 2 of the utility model;

[0027] Figure 8 It is a structural schematic view of the error-proof device in the embodiment 3 of the utility model. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to specific embodiments.

[0029] Example 1

[0030] like Figures 1-6 As shown, this is a preferred embodiment of the present invention. Figure 1 As shown, the error-proofing device for threaded fasteners in this embodiment includes a base 1 for attachment to a feeding device, and a placement member 2 for placing the threaded fastener A to be tested. A detection member 3 is also provided on the base 1, and the detection member 3 has a detection space 31 for accommodating the placement member 2 and the threaded fastener A to be tested. A drive source 4 connected to the placement member 2 is also provided on the base 1. Figure 5 The diagram shows the connection structure between the drive source 4 and the placement component 2. The drive source 4 drives the placement component 2, along with the threaded fastener A to be tested, forward to enter the detection space 31. The error-proofing device also includes a processing module for signal connection with the feeding equipment. Furthermore, the detection component 3 is equipped with a sensor assembly for signal connection with the processing module. When the placement component 2, along with the threaded fastener A to be tested, enters the detection space 31, the sensor assembly can detect the dimensional data of the threaded fastener A. If the dimensional data of the threaded fastener A is correct, the processing module controls the feeding equipment to open. Figure 2 As shown, the upper surface of the placement component 2 is provided with a through hole 21 through which the protrusion 1a of the threaded fastener A to be tested passes, and the through hole 21 at least partially protrudes radially inward to form a flange 22 for placing the head 2a of the threaded fastener A to be tested. Since the threaded fastener A to be tested in this embodiment is a rivet bolt, the protrusion 1a has a certain length. The protrusion 1a passes through the through hole 21, and the head 2a rests on the flange 22, thereby achieving stable placement of the threaded fastener A to be tested without affecting the testing of the protrusion 1a passing through the through hole 21.

[0031] In this embodiment, only the length and diameter data of the protrusion 1a need to be measured for the threaded fastener A to be tested. After clarifying the testing requirements, as follows: Figure 3As shown, the placing member 2 is in a block shape, and the detection space 31 includes a first space 311 adapted to the placing member 2, and the driving source 4 is used to drive the placing member 2 to advance into the first space 311. The detection space 31 further includes a second space 312 in communication with the first space 311, and the second space 312 extends downward from the center of the first space 311 to accommodate the protrusion 1a of the threaded fastener A to be detected, and correspondingly, the sensor assembly includes a second sensor 5 aligned with the second space 312, so as to realize the detection of the length and diameter data of the protrusion 1a of the threaded fastener A to be detected. The first space 311 and the second space 312 form a detection space 31 in a T-shaped cross section, which can be understood as a profiling space adapted to the threaded fastener A to be detected in the embodiment, and the protrusion 1a passes through the through hole 21 into the second space 312. The second sensor 5 in the embodiment is an optical reflection sensor, so as to judge whether the length of the protrusion 1a is correct, and also judge the diameter data of the protrusion 1a. Specifically, as shown in the figure, Figure 4 As shown, the second sensor 5 is located on the side of the detection member 3 perpendicular to the advancing direction of the placing member 2, and a preset distance D is left between the second sensor 5 and the upper surface of the flange 22, and correspondingly, the detection member 3 is provided with a passage 32 for the second sensor 5 to communicate with the second space 312. In the embodiment, there are not too many types of threaded fasteners A to be detected in the production process, and only the length of the protrusion 1a is different among the various threaded fasteners A to be detected, and the present operation only needs to identify the threaded fastener A to be detected with a protrusion 1a of a specific length. First, as the head 2a is consistent as described above, the protrusion 1a that is too long will not be able to enter the preset second space 312, and the protrusion 1a that is too short cannot be detected by the second sensor 5. That is, the preset distance D left between the second sensor 5 and the upper surface of the flange 22 is the length required for the protrusion 1a of the threaded fastener A to be detected, so once the second sensor 5 detects the protrusion 1a, it means that the length of the protrusion 1a is correct, and at the same time, the diameter data of the protrusion 1a can also be detected according to actual needs. As shown in the figure, Figure 6 As shown, the specific state of the placing member 2 together with the threaded fastener A to be detected entering the detection space 31.

[0032] In summary, the error-proofing device in the embodiment uses the placing member 2 to place the threaded fastener A to be detected, and the placing member 2 can enter the detection space 31 of the detection member 3 together with the threaded fastener A to be detected, and the detection member 3 is provided with a sensor assembly connected to the processing module for detection. If the size data of the threaded fastener A to be detected is correct, the feeding equipment can be opened, so that the type error of the threaded fastener A can be avoided before feeding into the feeding equipment.

[0033] Embodiment 2

[0034] As shown in the figure, Figure 7As shown, it is basically the same as Embodiment 1, except that the channel 32 extends upward from the lower part of the second space 312. Correspondingly, the detection element 3 is also provided with an adjustment mechanism 6 connected to the second sensor 5, thereby adjusting the preset distance D between the second sensor 5 and the upper surface of the flange 22. The adjustable preset distance D means that it can be adjusted more flexibly as needed, and can accommodate more threaded fasteners A to be detected. The adjustment mechanism 6 includes an adjustment platform 61 whose upper end of the detection element 3 extends at least partially toward the second sensor 5, and an adjustment element 62 is screwed onto the adjustment platform 61. The lower end of the adjustment element 62 is connected to the second sensor 5.

[0035] Example 3

[0036] like Figure 8 As shown, it is basically the same as Embodiment 1, except that the detection space 31 only includes a first space 311. The upper surface of the placement member 2 is at least partially recessed downward to the upper surface of the flange 22, forming a notch 23 for exposing the head 2a of the threaded fastener A to be detected. Correspondingly, the sensor assembly includes a first sensor corresponding to the notch 23, thereby realizing the detection of the height data of the head 2a of the threaded fastener A to be detected. This design is because the threaded fastener A to be detected in this embodiment is a rivet nut, the head 2a of which is a flange face, and the protrusion 1a is a boss. However, only the height data of the flange face needs to be detected, and the length of the boss is small. Therefore, the detection space 31 only needs to be provided with a first space 311 that is adapted to the placement member 2. In fact, if the height of the head 2a is too high, it will not be able to enter the detection space 31 for detection, that is, the case of the head 2a being too high is pre-screened out. Furthermore, by providing the notch 23, the height data of the head 2a can be observed from the side of the head 2a, thereby being detected by the pre-set first sensor.

Claims

1. A mistake-proofing device for threaded fasteners, comprising a seat (1) for attachment to a feeding apparatus, characterized in that, Also included are: a placing member (2) for placing a threaded fastener (A) to be detected; a detection member (3) located on the seat body (1) and provided with a detection space (31) for accommodating the placing member (2) and the threaded fastener (A) to be detected; a driving source (4) located on the seat body (1) and connected with the placing member (2) to drive the placing member (2) and the threaded fastener (A) to be detected to advance into the detection space (31); a processing module connected with the feeding device; The detection member (3) is provided with a sensor assembly connected with the processing module, and the sensor assembly can detect the size data of the threaded fastener (A) to be detected when the placing member (2) and the threaded fastener (A) to be detected enter the detection space (31), and if the size data of the threaded fastener (A) to be detected is correct, the processing module controls the feeding device to open.

2. The mistake-proofing device of claim 1, wherein: The upper surface of the placing member (2) is provided with a through hole (21) through which the protrusion (1a) of the threaded fastener (A) to be detected passes, and the through hole (21) is at least partially formed with a flange (22) for placing the head (2a) of the threaded fastener (A) to be detected.

3. The mistake-proofing device of claim 2, wherein: The upper surface of the placing member (2) is at least partially recessed downward to the upper surface of the flange (22) to form a gap (23) for exposing the head (2a) of the threaded fastener (A) to be detected, and correspondingly, the sensor assembly includes a first sensor corresponding to the gap (23), thereby realizing detection of the height data of the head (2a) of the threaded fastener (A) to be detected.

4. A mistake-proofing device according to claim 2 or 3, characterized in that: The placing member (2) is block-shaped, and the detection space (31) includes a first space (311) adapted to the placing member (2), and the driving source (4) is used to drive the placing member (2) to advance into the first space (311).

5. The mistake-proofing device of claim 4, wherein: The detection space (31) further includes a second space (312) in communication with the first space (311), and the second space (312) extends downward from the center of the first space (311) to accommodate the protrusion (1a) of the threaded fastener (A) to be detected, and correspondingly, the sensor assembly includes a second sensor (5) aligned with the second space (312), thereby realizing detection of the length and / or diameter data of the protrusion (1a) of the threaded fastener (A) to be detected.

6. The mistake-proofing device of claim 5, wherein: The second sensor (5) is located on the side surface of the detection member (3) perpendicular to the advancing direction of the placing member (2), and a predetermined distance (D) is left between the second sensor (5) and the upper surface of the flange (22), and correspondingly, the detection member (3) is provided with a channel (32) for communication between the second sensor (5) and the second space (312).

7. The mistake-proofing device of claim 6, wherein: The channel (32) extends upward from the lower part of the second space (312), and the detection member (3) is further provided with an adjusting mechanism (6) connected with the second sensor (5), which further adjusts the preset distance (D) between the second sensor (5) and the upper surface of the flange (22).

8. The mistake-proofing device of claim 7, wherein: The adjusting mechanism (6) comprises an adjusting platform (61) extending at least partially from the upper end of the detection member (3) towards the second sensor (5), and the adjusting platform (61) is screwed with an adjusting member (62), and the lower end of the adjusting member (62) is connected with the second sensor (5).

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