Detection device for preventing missing coding
Through the combination of photoelectric sensors and lifting cylinder limit gear lever, the problem of missing coding of the boxing equipment is solved, and the box body is accurately neutralized and scanned, reducing equipment costs, and improving coding accuracy and speed.
Patent Information
- Application Number
- CN202422601567.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-10-24
AI Technical Summary
When assembling the box body, there may be missed coding, which is difficult to effectively avoid the prior art, and high-cost visual detection equipment is difficult to popularize.
The photoelectric sensor is used to detect the distance and length of the box, and the distance between the box is adjusted by the lifting cylinder drive limit lever. The alarm and centering components are combined to ensure the accurate alignment and coding of the box. The torsion spring blocking plate is used to control the scanning speed to reduce equipment costs.
Effectively reduce missed coding situations, improve coding accuracy and speed, reduce equipment costs, and achieve automatic detection with high sensitivity.
Smart Images
Figure CN223161549U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a detection device, in particular to a detection device for preventing missing coding. Background Art
[0002] After the cartoning machine equipment assembles the box body, it needs to be coded on the box body by a laser coding machine, so that various two-dimensional codes, barcodes and other identifiers appear on the box to meet relevant laws, regulations and standards. In actual production, when the cartoning machine equipment assembles the box body, sometimes there will be defective products in cartoning, that is, the tongue of the box is not fully inserted into the box body, resulting in a slightly oversized appearance of the box. When such boxes are conveyed by the conveyor belt on the conveyor frame and touch the limit bar at the outlet of the cartoning machine, a blocking force will be generated, which will cause the boxes to be connected or the box spacing to be too small, resulting in the material sensor of the laser coding machine only being able to detect the previous box and code it, and unable to detect the subsequent boxes, thus failing to code the subsequent box with connected boxes or too small box spacing, resulting in the occurrence of missing coding.
[0003] At present, in order to reduce the shipment of products with missing coding, the method of enhancing appearance inspection at the downstream station is often used to detect the products without coding. However, due to the huge number of products, it is inevitable that there will be omissions if manual inspection is used; if a vision inspection and rejection device is used to detect the un-coded packaging boxes, the vision inspection and rejection device includes an automatic feeding part, an automatic conveying part, an automatic detection part and an automatic discharging part, and the equipment cost is relatively high. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a detection device for preventing missing coding. The utility model has the characteristics of reducing the situation of missing coding and low cost.
[0005] The technical solution of the utility model: a detection device for preventing missing coding, including a conveyor frame, on which a laser coding machine is provided. Baffles are provided on both sides of the conveyor frame, and a detection port is provided on the baffle at the front side of the laser coding machine in the conveying direction. An optoelectronic sensor is provided at the detection port, and a centering component is provided at the front side of the optoelectronic sensor in the conveying direction. A limit bar driven by a lifting cylinder is provided between the optoelectronic sensor and the laser coding machine. The optoelectronic sensor is electrically connected to an alarm and a lifting cylinder respectively through a controller.
[0006] In the foregoing detection device for preventing missing coding, the optoelectronic sensor includes a symmetrically distributed emitter and receiver.
[0007] In the foregoing detection device for preventing missing coding, a bracket is provided at the rear side of the laser coding machine in the conveying direction. A barcode scanner and a blocking plate are sequentially provided on the bracket along the conveying direction. The blocking plate is rotatably connected to the bracket through a rotating shaft, a torsion spring is sleeved on the rotating shaft, one end of the torsion spring is connected to the blocking plate, and the other end of the torsion spring is connected to the bracket.
[0008] In the aforementioned detection device for preventing missing coding, the centering assembly includes a bidirectional screw rotatably connected to the two side baffles. One end of the bidirectional screw is provided with a stepping motor for driving the rotation of the bidirectional screw. Sliders are respectively arranged on the two threaded parts of the bidirectional screw, and a push plate is fixedly connected to the slider. A fixing plate is arranged on the upper side of the baffle, and a chute for restricting the sliding position of the slider is arranged on the fixing plate.
[0009] In the aforementioned detection device for preventing missing coding, pressure sensors are arranged on both the limit stop rod and the push plate.
[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0011] By means of the photoelectric sensor provided in the present utility model, according to the signal duration and interval time, the distance between adjacent boxes on the conveying rack and the length of the box are detected. The minimum value of the box distance and the standard length of the box are pre-entered into the controller. If it is detected that the box distance is less than the minimum value, the limit stop rod is driven by the lifting cylinder to move downward to block the conveyance of the box conveyed later, so that it remains stationary, increasing the distance between adjacent boxes to meet the distance requirement and reducing the situation of missing coding. If it is detected that the box length is greater than the standard length, that is, the situation of connected boxes occurs at this time, the alarm gives an alarm for manual intervention, effectively controlling the un-coded products from flowing into the next process.
[0012] This device has low material and energy consumption costs and high detection sensitivity. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic structural diagram of the present utility model.
[0014] Figure 2 It is a schematic structural diagram of the photoelectric sensor.
[0015] Figure 3 It is a schematic structural diagram of the centering assembly.
[0016] The reference signs in the drawings are: 1, conveying rack; 11, baffle; 12, detection port; 2, laser coding machine; 3, photoelectric sensor; 31, emitter; 32, receiver; 4, centering assembly; 41, bidirectional screw; 42, stepping motor; 43, slider; 44, push plate; 45, fixing plate; 46, pressure sensor; 51, lifting cylinder; 52, limit stop rod; 61, support; 62, barcode scanner; 63, blocking plate; 64, rotating shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] The present utility model will be further described below in conjunction with the drawings and embodiments, but it shall not be used as a basis for limiting the present utility model.
[0018] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0019] Embodiment:
[0020] As Figures 1 - 3 shown, a detection device for preventing missing coding includes a conveying rack 1, on which a laser coding machine 2 is provided. Baffles 11 are provided on both sides of the conveying rack 1. Detection ports 12 are symmetrically provided on the two baffles 11 at the front side of the conveying path of the laser coding machine 2. Photoelectric sensors 3 are provided at the detection ports 12. A centering assembly 4 is provided at the front side of the conveying path of the photoelectric sensors 3. A limit stop bar 52 driven by a lifting cylinder 51 is provided between the photoelectric sensors 3 and the laser coding machine 2. The photoelectric sensors 3 are electrically connected to an alarm and the lifting cylinder 51 respectively through a controller.
[0021] The photoelectric sensor 3 includes a transmitter 31 and a receiver 32 that are symmetrically distributed. The transmitter 31 emits a light beam, and the receiver 32 receives the light beam emitted by the transmitter 31 to obtain a signal.
[0022] A support 61 is provided at the rear side of the conveying path of the laser coding machine 2. A barcode scanner 62 and a blocking plate 63 are sequentially provided on the support 61 along the conveying direction. The blocking plate 63 is rotatably connected to the support 61 through a rotating shaft 64. A torsion spring is sleeved on the rotating shaft 64. One end of the torsion spring is connected to the blocking plate 63, and the other end of the torsion spring is connected to the support 61. After the laser coding machine 2 codes, the barcode scanner 62 is used to scan the coded product to detect the product without coding. If no coding mark is detected, an alarm is given to prevent the product with missing coding from flowing into the next process; if a coding mark is detected, counting is performed. The present utility model also designs a blocking plate 63 with a torsion spring, so that the product will be subjected to a certain torsion spring resistance when passing through the blocking plate 63, thereby reducing the moving speed of the product passing through the barcode scanner 62 and facilitating the barcode scanner 62 to scan the code.
[0023] The centering assembly 4 includes a bidirectional screw 41 rotatably connected to the two side baffles 11. One end of the bidirectional screw 41 is provided with a stepping motor 42 for driving the rotation of the bidirectional screw 41. Sliders 43 are respectively arranged on the two threaded portions of the bidirectional screw 41. A push plate 44 is fixedly connected to the slider 43. A fixing plate 45 is arranged on the upper side of the baffle 11, and a chute for restricting the sliding position of the slider 43 is arranged on the fixing plate 45. The arranged stepping motor 42 drives the bidirectional screw 41 to rotate, and the bidirectional screw 41 drives the sliders 43 threadedly connected thereto to move synchronously in the same direction or in opposite directions, thereby driving the push plates 44 to approach or move away from each other, and pushing the products on the conveying rack 1, so as to realize the centering operation of the products on the conveying rack 1.
[0024] Pressure sensors 46 are arranged on both the limiting stop rod 52 and the push plate 44. The arranged pressure sensors 46 are used to detect whether the limiting stop rod 52 and the push plate 44 act effectively on the products, so as to ensure the blocking and pushing effects on the products.
[0025] Working principle:
[0026] The arranged photoelectric sensor 3 is used to detect the conveying condition of the boxes on the conveying rack 1. In this embodiment, a transmissive photoelectric sensor 3 is adopted, that is, a transmitter 31 emits a light beam, and a receiver 32 receives the light beam. When there is no obstacle between the transmitter 31 and the receiver 32, the receiver 32 receives the light beam; when the box is conveyed between the transmitter 31 and the receiver 32 and blocks the light beam, the receiver 32 cannot receive the light beam. According to the duration and interval of the light beam received by the receiver 32 and the conveying speed of the conveying rack, the distance between adjacent boxes on the conveying rack 1 and the length of the box can be detected, and the detected information is sent to the controller. According to the product packaging box specifications and the requirements of the laser coding machine 2, the minimum value of the box spacing and the standard length of the box are pre-entered into the controller. If the detected box spacing is less than the minimum value, the lifting cylinder 51 is started to drive the limiting stop rod 52 to move downward to block and intercept the box conveyed later, so that it remains stationary, increasing the distance from the previous box, and the blocking time is limited according to the difference between the spacing and the standard value and the conveying speed; if the detected box length is greater than the standard length, that is, the situation of connected boxes occurs at this time, the controller controls the alarm to give an alarm for manual intervention.
[0027] Before the box passes through the photoelectric sensor 3, the left and right limits of the box are adjusted by the push plate 44 of the centering assembly 4 to adjust the conveying position of the box on the conveyor belt to avoid tilting, so that the box can accurately detect the box spacing and the box length when passing through the photoelectric sensor 3, and the box can be aligned with the laser coding machine 2, improving the accuracy of the coding position.
[0028] After the distance of the box body is adjusted by the limit stop rod 52, it is coded by the laser coding machine 2, and then scanned by the barcode scanner 62 to detect the box body with missing coding. If the barcode scanner 62 does not detect the coding mark on the box body, an alarm is given to prevent the box body with missing coding from flowing into the next process; if the coding mark on the box body is detected, counting is carried out. When scanning the code, the box body is hindered to a certain extent by the blocking plate 63, delaying the speed of the box body passing through the barcode scanner 62, thereby improving the scanning accuracy.
[0029] The parts not detailed in the present utility model are prior arts and will not be specifically described herein.
Claims
1. A detection device for preventing missing coding, comprising a conveying rack (1), and a laser coding machine (2) is arranged on the conveying rack (1), characterized in that: On both sides of the conveying rack (1), there are baffles (11). On the baffles (11), a detection port (12) is provided on the front side of the laser coding machine (2) during conveying. An optoelectronic sensor (3) is provided at the detection port (12). A centering assembly (4) is provided on the front side of the optoelectronic sensor (3) during conveying. A limiting stop rod (52) driven by a lifting cylinder (51) is provided between the optoelectronic sensor (3) and the laser coding machine (2). The optoelectronic sensor (3) is electrically connected to an alarm and the lifting cylinder (51) respectively through a controller.
2. The detection device for preventing missing coding according to claim 1, characterized in that: The optoelectronic sensor (3) includes a symmetrically distributed emitter (31) and a receiver (32).
3. The detection device for preventing missing coding according to claim 1, characterized in that: On the rear side of the laser coding machine (2) during conveying, there is a bracket (61). Along the conveying direction on the bracket (61), a barcode scanner (62) and a blocking plate (63) are successively provided. The blocking plate (63) is rotatably connected to the bracket (61) through a rotating shaft (64). A torsion spring is sleeved on the rotating shaft (64). One end of the torsion spring is connected to the blocking plate (63), and the other end of the torsion spring is connected to the bracket (61).
4. The detection device for preventing missing coding according to claim 1, wherein: The centering assembly (4) includes a bidirectional screw (41) rotatably connected to the two side baffles (11). One end of the bidirectional screw (41) is provided with a stepping motor (42) for driving the rotation of the bidirectional screw (41). Sliders (43) are respectively provided on the two threaded parts of the bidirectional screw (41). A push plate (44) is fixedly connected to the slider (43). On the upper side of the baffle (11), there is a fixing plate (45). A sliding groove for restricting the sliding position of the slider (43) is provided on the fixing plate (45).
5. The detection device for preventing missing coding according to claim 4, characterized in that: Pressure sensors (46) are provided on both the limiting stop rod (52) and the push plate (44).