A conveying device with a safety belt guide ring equipped with an optical detection unit

Abstract

This invention relates to the field of seat belt guide ring conveying and inspection technology, and in particular to a conveying device for seat belt guide rings equipped with an optical inspection unit. This invention achieves online, flow-based automatic inspection of seat belt guide rings through an embedded electrically controlled conveyor belt combined with an external electrically controlled inspection bracket and an optical inspection probe. Simultaneously, it achieves automatic workpiece positioning and locking / releasing through a split external limiting frame and a magnetically controlled locking block. This effectively solves the problems of low efficiency and inconsistent standards in traditional manual inspection, realizing automation, standardization, and high efficiency in product quality inspection.

Description

Technical Field

[0001] This invention relates to the field of seat belt guide ring conveying and detection technology, and in particular to a conveying device for seat belt guide rings equipped with an optical detection unit. Background Technology

[0002] Seatbelt guide rings are core safety components of vehicle occupant restraint systems. They are installed on the B-pillar of the car at the seatbelt retraction path and are used to limit and guide the webbing, straighten the seatbelt stitching, and prevent the webbing from shifting or twisting and bending, which could cause jamming. The integrity of its appearance, dimensional accuracy, and molding quality directly affect the safety and service life of the vehicle's seatbelts and are considered key safety components that car manufacturers control.

[0003] Currently, in mass production lines for seatbelt guide rings, finished product quality inspection mainly relies on manual visual sampling combined with fixed-point re-inspection using tooling to detect defects such as burrs, missing materials, deformation, and hole position deviations. This method depends on subjective human judgment, making it difficult to standardize and resulting in a high rate of false positives and false negatives. Furthermore, fixed tooling can only perform point-to-point inspections on workpieces after the machine has stopped and materials have been removed, and cannot adapt to the production line's conveyor cycle for online, in-line inspection. This requires the addition of separate sorting and quality inspection stations, increasing space occupation and labor costs, and hindering the overall line's efficiency. In addition, manual inspection is difficult to perform a comprehensive inspection of the guide rings, typically only covering the upper surface and outer side, leaving blind spots on the lower surface and inner guide openings, further reducing the reliability of outgoing quality inspection. Therefore, how to achieve online, in-line, comprehensive, automated inspection, eliminate blind spots, and reduce reliance on manual labor is a pressing technical problem that needs to be solved in this field. Summary of the Invention

[0004] The technical problem to be solved by this invention is that the traditional quality inspection of seat belt guide rings relies on subjective human judgment, which results in inconsistent standards, high rates of false detection and missed detection, and fixed tooling that cannot be adapted to the conveyor rhythm to achieve flow-through detection. It is necessary to add a separate sorting station. Moreover, the existing detection method has blind spots such as the lower surface and inner guide opening, which cannot achieve all-round automatic detection, resulting in low reliability of factory quality inspection.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: a conveying device for a seat belt guide ring equipped with an optical detection unit, including a conveying bracket, an embedded electrically controlled conveying belt movably mounted on the conveying bracket, an external electrically controlled detection bracket provided on the outer side of the conveying bracket, a split external limiting frame for mounting the seat belt guide ring provided on the embedded electrically controlled conveying belt, the split external limiting frame including a hinged assembly link, a magnetic locking block installed on the split external limiting frame, and a plurality of optical detection probes installed on the external electrically controlled detection bracket; when the split external limiting frame rotates to below the conveying bracket, due to gravity, the external mounting base together with the seat belt guide ring naturally droops and flips down through the hinge structure of the assembly link, exposing the lower surface of the seat belt guide ring to the detection field of the optical detection probes.

[0006] Furthermore, the side wall of the material conveying support is provided with a lateral expansion hole.

[0007] Furthermore, the external electrical control detection bracket includes a horizontal internal translation support rod fixed inside the conveying support and a lateral translation detection frame fixed to the extended end of the horizontal internal translation support rod. The extended end of the horizontal internal translation support rod is fixedly connected to the lateral translation detection frame by passing through the lateral telescopic through hole.

[0008] Furthermore, both ends of the lateral translation detection frame have mounting plates that bend toward the material conveying bracket, and embedded supplementary lights that cooperate with the optical detection probe are fixedly mounted on the mounting plates.

[0009] Furthermore, the side of the external mounting base is provided with a lateral telescopic groove for installing a magnetic locking block. The magnetic locking block includes an electromagnet installed inside the lateral telescopic groove, a telescopic latch slidably installed at the opening of the lateral telescopic groove, and an iron spring connecting the electromagnet and the telescopic latch.

[0010] Furthermore, a screening guide rail is installed at the lower end of the conveyor support via a lateral assembly frame.

[0011] Furthermore, a built-in conductive strip is fixedly installed inside the material conveying bracket at the position corresponding to the screen guide rail. Conductive terminals that cooperate with the built-in conductive strip are installed on both sides of the embedded mounting box. The built-in conductive strip controls the opening and closing of the electromagnet by contacting the conductive terminals.

[0012] Furthermore, a lateral limiting groove is provided on the locking surface of the telescopic lock tongue.

[0013] Furthermore, a pressure sensor is installed inside the lateral limiting slot.

[0014] The beneficial effects of this invention are as follows: It uses an optical inspection probe to replace manual visual inspection, and combines it with machine vision algorithms to automatically identify surface defects and dimensional deviations, eliminating human judgment differences and false or missed detections; a split-type external limiting frame is used for online conveying with an embedded electrically controlled conveyor belt, and the hinged structure allows the frame to naturally droop and flip under gravity when it reaches the bottom of the conveyor support, exposing the lower surface of the safety belt guide ring to the inspection field of view, overcoming the problem of blind spots in the lower surface and inner guide opening of manual inspection, and completing a full-range scan of the upper, outer, and lower surfaces in a single conveying operation; a magnetically controlled locking block provides reliable positioning, and the built-in conductive strip and conductive terminals selectively control the electromagnet's on / off state, allowing for in-flow inspection and automatic release and separation of qualified and unqualified parts at the corresponding screen guide rail positions without stopping the machine to retrieve materials, eliminating the need for a separate sorting station and saving space and labor costs. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the structure of the present invention in operation.

[0018] Figure 3 This is a schematic diagram of the internal structure of the present invention.

[0019] Figure 4 This is a schematic diagram of the external electrical control detection bracket in this invention.

[0020] Figure 5 This is a schematic diagram of the split external limiting frame in this invention.

[0021] Explanation of reference numerals in the attached drawings: 100. Conveying support bracket; 110. Lateral telescopic through hole; 200. Embedded electrically controlled conveyor belt; 210. Split-type external limiting frame; 211. Embedded mounting box; 212. Assembly connecting rod; 213. External mounting base; 300. Externally mounted electrically controlled detection bracket; 310. Horizontal internal translation support rod; 320. Lateral translation detection frame; 321. Mounting plate; 322. Embedded supplementary light; 330. Optical detection probe; 400. Magnetic locking block; 410. Lateral telescopic groove; 420. Electromagnet; 430. Telescopic locking tongue; 431. Lateral limiting slot; 432. Pressure sensor; 440. Iron spring; 500. Screening guide rail; 510. Built-in conductive strip; 520. Conductive terminal. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] like Figures 1 to 5 The device shown is a conveying device for a seatbelt guide ring equipped with an optical inspection unit. It includes a conveying support 100, an embedded electrically controlled conveying belt 200, an external electrically controlled inspection bracket 300, a split external limiting frame 210, and a magnetic locking block 400. The conveying support 100 serves as the main support of the device. The embedded electrically controlled conveying belt 200 is movably mounted on the upper part of the conveying support 100 and continuously circulates along the conveying direction to support and convey the seatbelt guide ring workpiece. An external electrically controlled inspection bracket 300 is fixedly mounted on the outer surface of the conveying support 100. Several optical inspection probes 330 are mounted on the external electrically controlled inspection bracket 300, facing the surface of the embedded electrically controlled conveying belt 200, for online optical inspection of the seatbelt guide ring during the conveying process.

[0025] A lateral telescopic through-hole 110 is provided on the side wall of the conveyor support 100. The externally mounted electrically controlled inspection support 300 includes a horizontally positioned internal translational support rod 310 and a lateral translational inspection frame 320. The horizontally positioned internal translational support rod 310 is fixed inside the conveyor support 100, and its extended end passes through the lateral telescopic through-hole 110 and is fixedly connected to the lateral translational inspection frame 320. The lateral translational inspection frame 320 can be translated along the lateral telescopic through-hole 110 under the guidance of the horizontally positioned internal translational support rod 310, thereby adjusting the inspection distance between the optical inspection probe 330 and the workpiece according to the specifications of the guide ring to be inspected. Both ends of the lateral translation detection frame 320 have mounting plates 321 that bend toward the material conveying bracket 100. An embedded supplementary light 322 is fixedly mounted on the mounting plate 321. The embedded supplementary light 322 is an LED array supplementary light source that works in conjunction with the optical detection probe 330 to provide uniform illumination conditions for the detection area.

[0026] The split-type external limiting frame 210 is fixedly installed at intervals along the conveying direction of the embedded electrically controlled conveyor belt 200 and operates together with the embedded electrically controlled conveyor belt 200. The split-type external limiting frame 210 includes an embedded mounting box 211 fixed to the surface of the embedded electrically controlled conveyor belt 200, an assembly link 212 hinged inside the embedded mounting box 211, and an external mounting seat 213 hinged to the end of the assembly link 212. The assembly link 212 adopts a multi-segment hinge structure, which allows the external mounting seat 213 to adaptively adjust its posture during the operation of the conveyor belt. The external mounting seat 213 has a lateral telescopic groove 410 on its side, and a magnetic locking block 400 is installed inside the lateral telescopic groove 410. The magnetic locking block 400 includes an electromagnet 420, a telescopic locking tongue 430, and an iron spring 440. The electromagnet 420 is fixed to the bottom of the lateral telescopic groove 410, the telescopic locking tongue 430 is slidably installed at the opening of the lateral telescopic groove 410, and the iron spring 440 is connected between the electromagnet 420 and the telescopic locking tongue 430.

[0027] The specific working process of the device is as follows: The safety belt guide ring is manually inserted between two adjacent split external limiting frames 210. The telescopic locking tongues 430 of the magnetic locking blocks 400 at the ends of the two split external limiting frames 210 press outwards from both sides, opening the inner side of the safety belt guide ring. Since the electromagnet 420 is de-energized at this time, the elastic force of the iron spring 440 pushes the telescopic locking tongue 430 to remain in the extended position, ensuring reliable positioning of the safety belt guide ring. The lateral limiting groove 431 on the locking surface of the telescopic locking tongue 430 matches the outer contour of the safety belt guide ring, improving the reliability of the locking and positioning. The pressure sensor 432 installed inside the lateral limiting groove 431 detects the locking force in real time and feeds it back to the control system to confirm that the workpiece has been loaded into place.

[0028] The embedded electrically controlled conveyor belt 200 starts operating, driving the split external limiting frame 210 and its safety belt guide ring forward along the conveying direction. When the safety belt guide ring moves between the externally mounted electrically controlled detection brackets 300 on both sides, the optical detection probes 330 on both sides work simultaneously. The optical detection probes 330 use industrial machine vision cameras, combined with uniform LED illumination provided by embedded supplementary lights 322, to optically scan and image the upper surface and outer side of the safety belt guide ring passing through the detection area. The acquired image data is transmitted to the controller in real time. The machine vision algorithm preset in the controller identifies the surface condition by comparing it with standard parameters, detecting whether there are appearance defects such as burrs, missing materials, deformation, and scratches, and measuring whether the guide ring's external dimensions and hole position deviations are within the acceptable tolerance range.

[0029] After completing the inspection of the upper and outer surfaces, the embedded electrically controlled conveyor belt 200 drives the safety belt guide ring to continue downstream. When the split external limiting frame 210 rotates to the bending position below the conveyor support 100, due to the gravity of the safety belt guide ring itself and the multi-segment hinge characteristics of the assembly link 212, the external mounting base 213, along with the safety belt guide ring on it, naturally falls downwards, causing the lower surface of the safety belt guide ring, which was originally facing downwards, to flip over and expose itself. At this time, the optical inspection probe 330 located on the lower side of the external electrically controlled inspection bracket 300 can perform optical scanning imaging on the flipped and exposed lower surface, and complete the inspection of defects and dimensions on the lower surface through machine vision algorithms, thereby achieving comprehensive scanning and identification of the upper, outer, and lower surfaces of the safety belt guide ring in a single conveying operation.

[0030] After all tests are completed, the embedded electrically controlled conveyor belt 200 continues to drive the split external limiting frame 210 to the position of the screening guide rail 500. Inside the conveyor support 100, corresponding to the positions of each screening guide rail 500, there are built-in conductive strips 510. Each built-in conductive strip 510 is associated with a screening guide rail 500 corresponding to a different grade. Qualified products correspond to one screening guide rail, and unqualified products correspond to another. The control system selectively switches power on and off based on the test results. When the split-type external limiting frame 210 makes contact with the built-in conductive strip 510 at the corresponding position of the screening guide rail 500 through the conductive terminal 520, if the workpiece is determined to be released at this position, the control system energizes the built-in conductive strip 510. The current is transmitted to the electromagnet 420 through the conductive terminal 520. The energized electromagnet 420 attracts the iron spring 440 to compress, causing the telescopic locking tongue 430 to retract into the lateral telescopic groove 410. After the safety belt guide ring loses its restraint, it falls off the split-type external limiting frame 210 and slides into the corresponding collection channel along the screening guide rail 500. If the workpiece should not be released at this position, the built-in conductive strip 510 is de-energized, the electromagnet 420 is de-energized, the iron spring 440 resets, and pushes the telescopic locking tongue 430 to extend, continuing to maintain the engagement with the safety belt guide ring.

[0031] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A conveying device with a safety belt guide ring equipped with an optical detection unit, comprising a conveying support (100), characterized in that: An embedded electrically controlled conveyor belt (200) is movably mounted on the conveyor support (100). An external electrically controlled detection bracket (300) is provided on the outer side of the conveyor support (100). A split external limiting frame (210) for installing a safety belt guide ring is provided on the embedded electrically controlled conveyor belt (200). A magnetic locking block (400) is installed on the split external limiting frame (210). A plurality of optical detection probes (330) are installed on the external electrically controlled detection bracket (300). The split external limiting frame (210) includes An embedded mounting box (211) is fixed on the surface of the embedded electronically controlled conveyor belt (200), an assembly link (212) is hinged inside the embedded mounting box (211), and an external mounting seat (213) is hinged at the end of the assembly link (212). When the split external limiting frame (210) moves to the bottom of the conveyor support (100), the external mounting seat (213) along with the safety belt guide ring naturally droops and flips down due to gravity through the hinge structure of the assembly link (212), exposing the lower surface of the safety belt guide ring to the detection field of the optical detection probe (330).

2. The conveying device with a safety belt guide ring and an optical detection unit according to claim 1, characterized in that: The side wall of the material conveying support (100) is provided with a lateral telescopic through hole (110).

3. The conveying device with a safety belt guide ring equipped with an optical detection unit according to claim 2, characterized in that: The external electrical control detection bracket (300) includes a horizontal internal translation support rod (310) fixed inside the conveying support (100) and a lateral translation detection frame (320) fixed to the extended end of the horizontal internal translation support rod (310). The extended end of the horizontal internal translation support rod (310) is fixedly connected to the lateral translation detection frame (320) through a lateral telescopic through hole (110).

4. A conveying device with a safety belt guide ring and an optical detection unit according to claim 3, characterized in that: Both ends of the lateral translation detection frame (320) have mounting plates (321) that bend toward the side of the conveying support (100), and an embedded fill light (322) that cooperates with the optical detection probe (330) is fixedly mounted on the mounting plate (321).

5. A conveying device with a safety belt guide ring and an optical detection unit according to claim 1, characterized in that: The external mounting base (213) has a lateral telescopic groove (410) for mounting a magnetic locking block (400) on its side. The magnetic locking block (400) includes an electromagnet (420) installed inside the lateral telescopic groove (410), a telescopic latch (430) slidably installed at the opening of the lateral telescopic groove (410), and an iron spring (440) connecting the electromagnet (420) and the telescopic latch (430).

6. A conveying device with a safety belt guide ring and an optical detection unit according to claim 5, characterized in that: The lower end of the material conveying support (100) is equipped with a screening guide rail (500) via a side assembly frame.

7. A conveying device with a safety belt guide ring and an optical detection unit according to claim 6, characterized in that: The conveying support (100) is equipped with a built-in conductive strip (510) fixedly at the position corresponding to the screening guide rail (500). The embedded mounting box (211) is equipped with conductive terminals (520) that cooperate with the built-in conductive strip (510) on both sides. The built-in conductive strip (510) controls the opening and closing of the electromagnet (420) by contacting the conductive terminal (520).

8. A conveying device with a safety belt guide ring having an optical detection unit according to claim 5, characterized in that: The telescopic latch (430) has a lateral limiting groove (431) on its locking surface.

9. A conveying device with a safety belt guide ring having an optical detection unit according to claim 8, characterized in that: A pressure sensor (432) is installed inside the lateral limiting slot (431).

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