Bar code recognition sensor with adjustable recognition range

Abstract

The utility model relates to a bar code recognition sensor with an adjustable recognition range, and belongs to the technical field of bar code recognition sensors. The barcode recognition sensor with the adjustable recognition range comprises a mounting frame, the inner wall of the mounting frame is rotatably connected with a screw rod, the inner wall of the mounting frame is slidably connected with a sliding block, and the surface of the screw rod is in threaded connection with the inner wall of the sliding block; the protection mechanism comprises a sealing cover clamped to the top of the mounting frame; through mutual cooperation of a sealing cover and a corrugated pad, the top and the bottom of the mounting frame are blocked, impurities are prevented from being attached to the surface of a lead screw, abrasion between the lead screw and a sliding block is reduced, and accurate adjustment of the recognition range of a bar code recognition sensor is guaranteed; slow rotation of the lead screw is achieved, the position of the bar code recognition sensor is accurately adjusted, and therefore it is guaranteed that the recognition range of the bar code recognition sensor is accurately controlled.

Description

Technical Field

[0001] This utility model relates to the field of barcode recognition sensor technology, and in particular to a barcode recognition sensor with adjustable recognition range. Background Technology

[0002] A barcode recognition sensor is a detection device that converts barcode information into processable electrical signals using optical or electronic technology. Its core function is to achieve rapid and accurate acquisition and decoding of barcode data. In label inspection on winding machines, mechanical drive structures are mostly used to adjust the detection distance and field of view of the barcode recognition sensor to adapt to the reading needs of barcode labels of different sizes, positions, and motion states.

[0003] According to the search, the Chinese patent "A Label Detection Device for a Winding Machine" (authorization announcement number "CN221804721U") uses a mounting bracket, a sliding plate, a servo motor, and a threaded rod exposed in the mounting bracket to adjust the position of the image recognition sensor, thereby facilitating the adjustment of the recognition range.

[0004] In the aforementioned application, the exposed threaded rod is prone to impurities adhering to its surface, which in turn affects the precise adjustment of the recognition range of the image recognition sensor. Utility Model Content

[0005] Therefore, it is necessary to provide a barcode recognition sensor with an adjustable recognition range to address the problem that exposed threaded rods are prone to impurities adhering to their surface, which in turn affects the accurate adjustment of the recognition range of the image recognition sensor.

[0006] The system includes: a mounting frame, with a lead screw rotatably connected to the inner wall of the mounting frame and a slider slidably connected to the inner wall of the mounting frame; the lead screw is threadedly connected to the inner wall of the slider; and a protective mechanism, including a cover snapped onto the top of the mounting frame, corrugated pads fixedly connected to both sides of the slider, the other side of the corrugated pads fixedly connected to one side of the inner wall of the mounting frame, a first bevel gear fixedly connected to one end of the lead screw, a second bevel gear meshing with one end of the first bevel gear, a servo motor fixedly connected to the bottom end of the second bevel gear, and the bottom end of the servo motor fixedly connected to the inner bottom wall of the mounting frame. The cover and corrugated pads work together to seal the top and bottom of the mounting frame, preventing impurities from adhering to the lead screw surface, reducing wear between the lead screw and the slider, and ensuring precise adjustment of the barcode recognition sensor's recognition range. The first and second bevel gears work together to slowly rotate the lead screw, thereby precisely adjusting the position of the barcode recognition sensor and ensuring precise control of the barcode recognition sensor's recognition range.

[0007] In one embodiment, two clips are slidably connected to the inner wall of the cap, and the surfaces of the clips engage with the inner wall of the mounting frame. A cam rod is rotatably connected to the inner wall of the cap. By rotating the cam rod, the two clips are pushed away from each other and engaged into the mounting frame, thus locking the cap at the top of the mounting frame.

[0008] In one embodiment, a long rod is slidably connected to the inner wall of the cam rod, and the surface of the long rod is slidably connected to the inner wall of the cover.

[0009] In one embodiment, a rubber rod is slidably connected to the inner wall of the cam rod, and the surface of the rubber rod is engaged with the inner wall of the long rod. The interaction between the long rod and the rubber rod locks the cam rod, thereby ensuring the cap is stably installed on the top of the mounting frame, preventing impurities from adhering to the lead screw surface and reducing wear between the lead screw and the slider.

[0010] In one embodiment, a spring is fixedly connected to one end of the rubber rod, and the other end of the spring is fixedly connected to the inner wall of the cam rod.

[0011] In one embodiment, an arc-shaped block is fixedly connected to the top of the cover.

[0012] In one embodiment, four guide rods are fixedly connected to the bottom of the cap, and the surfaces of the guide rods are slidably connected to the inner wall of the mounting frame. The guide rods provide precise guidance for the cap to be precisely engaged with the top of the mounting frame.

[0013] In one embodiment, two pull cords are fixedly connected to the surface of the card holder, with the top of each cord passing through the cover and fixedly connected to a pull block. The pull cords and pull blocks work together to release the cover from the top of the mounting frame, facilitating maintenance of the lead screw inside the mounting frame and ensuring precise adjustment of the barcode recognition sensor's recognition range.

[0014] Beneficial effects

[0015] 1. By using a cover and a corrugated pad in combination, the top and bottom of the mounting frame are sealed, thereby preventing impurities from adhering to the surface of the lead screw, reducing wear between the lead screw and the slider, and ensuring precise adjustment of the barcode recognition sensor's recognition range. By using a first bevel gear and a second bevel gear in combination, the lead screw is slowly rotated, thereby precisely adjusting the position of the barcode recognition sensor, and ensuring precise control of the barcode recognition sensor's recognition range.

[0016] 2. By rotating the cam rod, the two brackets are pushed away from each other and locked into the mounting frame, thus locking the cover at the top of the mounting frame. The cooperation between the long rod and the rubber rod locks the cam rod, thereby ensuring that the cover is stably installed at the top of the mounting frame, thus preventing impurities from adhering to the surface of the lead screw and reducing wear between the lead screw and the slider. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a sectional view of the mounting frame of this utility model;

[0020] Figure 3 This is a cross-sectional view of the cap of this utility model;

[0021] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle.

[0022] Figure label:

[0023] 100. Mounting frame; 200. Lead screw; 300. Slider; 400. Protective mechanism; 401. Cover; 402. Corrugated pad; 403. First bevel gear; 404. Second bevel gear; 405. Servo motor; 406. Card holder; 407. Cam rod; 408. Long rod; 409. Rubber rod; 410. Spring; 411. Arc block; 412. Pull block; 413. Pull rope; 414. Guide rod. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0029] The following is combined Figures 1-4 This invention describes a barcode recognition sensor with an adjustable recognition range.

[0030] In one embodiment, a barcode recognition sensor with adjustable recognition range includes: a mounting frame 100, a lead screw 200 rotatably connected to the inner wall of the mounting frame 100, a slider 300 slidably connected to the inner wall of the mounting frame 100, and the surface of the lead screw 200 threadedly connected to the inner wall of the slider 300; a protective mechanism 400, including a cover 401 snapped onto the top of the mounting frame 100, corrugated pads 402 fixedly connected to both sides of the slider 300, the other side of the corrugated pads 402 fixedly connected to one side of the inner wall of the mounting frame 100, a first bevel gear 403 fixedly connected to one end of the lead screw 200, a second bevel gear 404 meshing with one end of the first bevel gear 403, a servo motor 405 fixedly connected to the bottom end of the second bevel gear 404, and the bottom end of the servo motor 405 fixedly connected to the inner bottom wall of the mounting frame 100.

[0031] The barcode recognition sensor is installed at the bottom of the slider 300 using screws. The mounting frame 100 is installed at a suitable position in the detection area using screws. The connecting wire on the barcode recognition sensor is plugged into the power socket. The hanging bracket can be installed at the front and rear ends of the mounting frame 100 using screws to suspend the connecting wire on the barcode recognition sensor, reducing the possibility of the connecting wire getting tangled. Specific options can be selected according to actual needs, which will not be elaborated here.

[0032] In this embodiment, when the label of the winding machine needs to be identified and detected, the servo motor 405 is manually turned on and the output shaft speed of the servo motor 405 is adjusted to be relatively slow. The output shaft of the servo motor 405 rotates slowly, driving the second bevel gear 404 to rotate. The diameter of the second bevel gear 404 is smaller than the diameter of the first bevel gear 403. The specific gear diameter ratio is selected according to actual needs. The rotation of the second bevel gear 404 drives the first bevel gear 403 and the lead screw 200 to rotate slowly. The slowly rotating lead screw 200 drives the slider 300 and the barcode recognition sensor to move slowly in a straight line. The slowly moving slider 300 squeezes one side of the corrugated pad 402 and stretches the other side of the corrugated pad 402, thereby always sealing the bottom of the mounting frame 100, so that the barcode recognition sensor moves slowly in a straight line to the appropriate position, and the servo motor 405 is manually turned off.

[0033] At this point, the light emitted by the built-in light source of the barcode recognition sensor, such as a light-emitting diode, shines onto the barcode on the winding machine label. Because the bars and spaces of the barcode have different reflectivities, the reflected light is focused by the optical system and received by the photodetector. The photodetector converts the reflected light into an electrical signal, and the intensity of the electrical signal corresponds to the difference in reflection between the barcode bars and spaces. Subsequent circuits amplify, shape, and digitize these electrical signals, and then a decoding algorithm interprets the digitized signals into the information represented by the barcode.

[0034] like Figure 4As shown, two clips 406 are slidably connected to the inner wall of the cover 401. The surfaces of the clips 406 are engaged with the inner wall of the mounting frame 100. A cam rod 407 is rotatably connected to the inner wall of the cover 401. A long rod 408 is slidably connected to the inner wall of the cam rod 407. The surface of the long rod 408 is slidably connected to the inner wall of the cover 401. A rubber rod 409 is slidably connected to the inner wall of the cam rod 407. The surface of the rubber rod 409 is engaged with the inner wall of the long rod 408. One end of the 9 is fixedly connected to a spring 410, and the other end of the spring 410 is fixedly connected to the inner wall of the cam rod 407. The top of the cover 401 is fixedly connected to an arc-shaped block 411, and the bottom of the cover 401 is fixedly connected to four guide rods 414. The surface of the guide rods 414 is slidably connected to the inner wall of the mounting frame 100. The surface of the card holder 406 is fixedly connected to two pull ropes 413. The top end of the pull rope 413 passes through the cover 401 and is fixedly connected to a pull block 412.

[0035] The pull cord 413 is a nylon component, while the cover 401, corrugated pad 402, clip 406, and spring 410 are all rubber components, which have good flexibility and elasticity, so that the front and rear ends of the corrugated pad 402 are tightly attached to the inner wall of the mounting frame 100.

[0036] In this embodiment, when lubrication maintenance is required for the lead screw 200, the rubber rod 409 is pulled away from the long rod 408, the long rod 408 is pulled away from the cover 401, and the rotating cam rod 407 abuts against the side of the arc block 411. At this time, the pull block 412 is pulled upward, causing the pull rope 413 to move upward and pull the two brackets 406 closer to each other and away from the mounting frame 100. The cover 401 is pulled upward, causing the guide rod 414 to disengage from the mounting frame 100, thus opening the top of the mounting frame 100, allowing lubrication maintenance to be performed on the surface of the lead screw 200.

[0037] After the lead screw 200 is repaired, slide the guide rod 414 into the mounting frame 100 so that the inner wall of the cover 401 is engaged with the top of the mounting frame 100. Rotate the cam rod 407 to abut against the other side of the arc block 411, thereby pushing the two brackets 406 away from each other and engaging with the mounting frame 100. Push the long rod 408 down to slide into the cover 401. The elastic force of the spring 410 pushes the rubber rod 409 to move and engage with the long rod 408, so that the cover 401 is installed on the top of the mounting frame 100.

[0038] Working principle: The output shaft of the servo motor 405 rotates slowly, driving the slider 300 and the barcode recognition sensor to move slowly in a straight line through the second bevel gear 404, the first bevel gear 403 and the lead screw 200. The slowly moving slider 300 squeezes one side of the corrugated pad 402 and stretches the other side of the corrugated pad 402, thereby always sealing the bottom of the mounting frame 100, so that the barcode recognition sensor moves slowly in a straight line to the appropriate position.

[0039] It should be noted that the mounting frame 100, lead screw 200, slider 300, first bevel gear 403, second bevel gear 404 and servo motor 405 mentioned above are all components with relatively mature existing technology. The specific model can be selected according to actual needs. At the same time, the servo motor 405 can be powered by the built-in power supply or by the mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A barcode recognition sensor with an adjustable recognition range, characterized in that, include: A mounting frame (100) is provided, wherein a lead screw (200) is rotatably connected to the inner wall of the mounting frame (100), and a slider (300) is slidably connected to the inner wall of the mounting frame (100). The surface of the lead screw (200) is threadedly connected to the inner wall of the slider (300). The protective mechanism (400) includes a cover (401) snapped onto the top of the mounting frame (100), corrugated pads (402) fixedly connected to both sides of the slider (300), the other side of the corrugated pads (402) fixedly connected to one side of the inner wall of the mounting frame (100), a first bevel gear (403) fixedly connected to one end of the lead screw (200), a second bevel gear (404) meshing with one end of the first bevel gear (403), a servo motor (405) fixedly connected to the bottom end of the second bevel gear (404), and the bottom end of the servo motor (405) fixedly connected to the inner bottom wall of the mounting frame (100).

2. The bar code reading sensor of claim 1, wherein The inner wall of the cover (401) is slidably connected to two card holders (406), the surface of the card holders (406) is engaged with the inner wall of the mounting frame (100), and the inner wall of the cover (401) is rotatably connected to a cam rod (407).

3. The bar code reading sensor of claim 2, wherein the light source is a laser diode. The inner wall of the cam rod (407) is slidably connected to a long rod (408), and the surface of the long rod (408) is slidably connected to the inner wall of the cover (401).

4. The bar code reading sensor of claim 2, wherein A rubber rod (409) is slidably connected to the inner wall of the cam rod (407), and the surface of the rubber rod (409) is engaged with the inner wall of the long rod (408).

5. The bar code reading sensor of claim 4, wherein the light source is a laser diode. One end of the rubber rod (409) is fixedly connected to a spring (410), and the other end of the spring (410) is fixedly connected to the inner wall of the cam rod (407).

6. The bar code reading sensor of claim 1, wherein An arc-shaped block (411) is fixedly connected to the top of the cover (401).

7. The bar code reading sensor of claim 1, wherein The bottom of the cover (401) is fixedly connected to four guide rods (414), and the surface of the guide rods (414) is slidably connected to the inner wall of the mounting frame (100).

8. The bar code reading sensor of claim 2, wherein Two pull ropes (413) are fixedly connected to the surface of the card holder (406), and the top of the pull rope (413) passes through the cover (401) and is fixedly connected to a pull block (412).

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