Cigarette packet three-dimensional measuring device

Abstract

The utility model provides a cigarette packet three-dimensional measuring device, which comprises a light source, a sample positioning unit and an imaging unit, light emitted by the light source reaches the sample positioning unit through a first lens, and the sample positioning unit comprises a horizontally arranged tray and a plurality of sample positioning frames arranged on the tray. The sample positioning frame is used for fixing the position of a tobacco bale sample and primarily screening whether the size of the sample tobacco bale meets the requirement or not; the tray is driven by the rotary driving unit to rotate and is driven by the lifting driving unit to do lifting motion at the same time; the imaging unit is located above the sample positioning unit and comprises a second lens, a third lens and an image sensor which are sequentially arranged from bottom to top. According to the utility model, the three-dimensional size data of the three packets are obtained in a non-contact measurement mode, so that errors caused by contact between a measurement tool and cigarette packet samples and errors caused by other people are avoided. The device can carry out comprehensive molding size measurement on a cigarette packet sample, and the measurement efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette packaging, in particular to a three-dimensional measuring device for cigarette packages. Background Art

[0002] With the rapid progress of my country's mechanical processing and manufacturing capabilities, the packaging speed of cigarette packaging machines is also increasing. Cigarette packaging machines have very high dimensional accuracy requirements for cigarette packaging materials. Any slight deviation may cause the cigarette packaging machine to jam and stop, seriously affecting production efficiency.

[0003] In order to meet the dimensional accuracy requirements of cigarette packaging machines, the industry currently generally uses manual measuring tools such as vernier calipers to measure the size of cigarette packages and control quality. However, contact measurement methods will squeeze the sample and cause deformation, thus affecting the measurement results. In addition, cigarette packages are mostly made of soft materials such as paper. Simple length, width and height measurements are far from covering the molding size of the sample. The squareness, surface flatness and local dimensional detail errors of the cigarette package will interfere with the cigarette packaging process. Currently available non-contact measuring equipment can only measure the point-to-point length dimensions of the sample, which cannot meet actual needs. Utility Model Content

[0004] In view of the above-mentioned defects, the purpose of the present utility model is to provide a three-dimensional measuring device for cigarette packs, which controls the overall forming dimensions of the cigarette packs through non-contact measuring equipment.

[0005] The utility model provides a three-dimensional measuring device for cigarette packs, comprising a light source, a sample positioning unit and an imaging unit, wherein the light emitted by the light source reaches the sample positioning unit via a first lens, the sample positioning unit comprises a horizontally arranged tray and a plurality of sample positioning frames arranged on the tray, the sample positioning frames are used to fix the position of the cigarette pack samples and to preliminarily screen whether the size of the sample cigarette packs meets the requirements; the tray rotates under the drive of a rotating drive unit, and simultaneously performs a lifting motion under the drive of a lifting drive unit; the imaging unit is located above the sample positioning unit, and comprises a second lens, a third lens and an image sensor which are arranged in sequence from bottom to top.

[0006] Preferably, the light source is a laser source.

[0007] Preferably, the surfaces of the tray and the sample positioning frame are both black.

[0008] Preferably, the tray is further provided with a plurality of positioning blocks.

[0009] Preferably, the rotation driving unit is a rotating stage.

[0010] Preferably, the lifting drive unit is a lifting platform.

[0011] Preferably, the tray is connected to the rotation drive unit via a lifting drive unit.

[0012] Preferably, the image sensor is a CMOS sensor.

[0013] The utility model provides a three-dimensional measuring device for cigarette packages, which obtains three-dimensional dimension data of three packages through a non-contact measurement method, avoiding errors caused by the contact of the measuring tool with the cigarette package sample and other human errors. The device can perform comprehensive molding dimension measurement on the cigarette package sample. In addition to the conventional length, width and height dimensions, it can also measure the squareness, flatness and various local defects of the cigarette package box type. The use of this device no longer requires multiple scans of the cigarette package sample and then synthesizing a three-dimensional image, which greatly improves the measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the three-dimensional measuring device for cigarette packages of the utility model.

[0015] Component number description:

[0016] 1 Light Source

[0017] 2. First lens

[0018] 3 Sample positioning unit

[0019] 31 Pallets

[0020] 32 Sample positioning frame

[0021] 4 Rotary drive unit

[0022] 5 Lifting drive unit

[0023] 6 Imaging Unit

[0024] 61 Second lens

[0025] 62 Third lens

[0026] 63 Image Sensor DETAILED DESCRIPTION

[0027] The following is a further detailed description of the specific implementations of the present invention in conjunction with the accompanying drawings. These implementations are only used to illustrate the present invention, but not to limit the present invention.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "top", "bottom", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] like Figure 1 As shown, the utility model provides a three-dimensional measurement device for cigarette packages, which includes a light source 1, a sample positioning unit 3 and an imaging unit 6. The light source 1 adopts an active light source, and specifically, a laser source with a higher concentration can be selected to achieve a better light path effect. The light emitted by the light source 1 reaches the sample positioning unit 3 through the first lens 2. The first lens 2 is preferably a collimating lens, which can collimate and focus the light emitted by the light source 1, and make the outgoing light beam irradiate the sample positioning unit 3.

[0031] The sample positioning unit 3 includes a horizontally arranged tray 31 and a plurality of sample positioning frames 32 arranged on the tray 31. The tray 31 is made of metal material, which has a high degree of flatness and can assist in positioning the cigarette pack sample. The sample positioning frame 32 is a rectangular frame designed according to the size requirements of the cigarette pack sample, which is used to fix the position of the cigarette pack sample and to preliminarily screen whether the size of the sample cigarette pack meets the requirements. If the outer contour of the cigarette pack sample cannot accurately fit the inner wall of the sample positioning frame 32, it means that the length, width and height dimensions of the cigarette pack sample do not meet the requirements. The number of sample positioning frames 32 arranged on the tray 31 can be determined as needed. In order to prevent low-reflection and diffuse reflection light from interfering with the three-dimensional measurement results, the surfaces of the tray 31 and the sample positioning frame 32 are treated to black by a sandblasting oxidation process. Furthermore, a plurality of triangular three-dimensional positioning blocks are also provided on the tray 31 to facilitate the measurement program to automatically identify and determine the coordinate system.

[0032] The tray 31 rotates under the drive of the rotation drive unit 4, and moves up and down under the drive of the lifting drive unit 5, so as to facilitate the adjustment of the distance and angle between the cigarette pack sample and the light source 1 and the imaging unit 6. Specifically, the tray 31 is connected to the rotation drive unit 4 through the lifting drive unit 5. The rotation drive unit 4 is an electric rotating stage, and the lifting drive unit 5 is an electric lifting platform. Both are prior arts and will not be described here. Those skilled in the art may also select a rotating stage and a lifting platform driven by a hydraulic cylinder or a pneumatic cylinder, or other mechanisms that can realize the rotation and lifting functions as needed.

[0033] The imaging unit 6 is arranged above the sample positioning unit 3, and includes a second lens 61, a third lens 62 and an image sensor 63 arranged in sequence from bottom to top. The image sensor 63 is used to collect a three-dimensional image of the cigarette pack sample, and specifically a CMOS sensor can be selected. Further, the imaging unit 6 also includes an image acquisition card and an image processing module. The image acquisition card is used for the image data collected by the image sensor 63, and transmits the data to the image processing module through the interface circuit; the image processing module extracts the structured light information in the three-dimensional image of the cigarette pack sample collected by the image sensor 63, and generates point cloud data and other size data of the cigarette package.

[0034] In a specific implementation of the present invention, the imaging unit 6 and the sample positioning unit 3 are coaxially arranged along the first axis, and the central axis of the light source 1 and the first lens 2 has an angle with the first axis. This can avoid mutual interference during the installation process and ensure the irradiation range of the light source 1.

[0035] Furthermore, the cigarette package three-dimensional measuring device of the utility model also includes a control system, which is respectively connected to the light source 1, the lifting drive unit 5, the rotation drive unit 4, and the image sensor 63. The control system can control the intensity of the light beam emitted by the light source 1, change the height and angle of the sample positioning unit 3, and collect, analyze and record the three-dimensional graphics obtained by the image sensor 63. The control system can specifically be a PLC.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A three-dimensional measuring device for cigarette packages, characterized in that: It includes a light source, a sample positioning unit and an imaging unit. The light emitted by the light source reaches the sample positioning unit through a first lens. The sample positioning unit includes a horizontally arranged tray and a plurality of sample positioning frames arranged on the tray. The sample positioning frames are used to fix the position of the cigarette pack sample and perform a preliminary screening to determine whether the size of the sample cigarette pack meets the requirements. The tray rotates under the drive of a rotating drive unit and moves up and down under the drive of a lifting drive unit. The imaging unit is located above the sample positioning unit and includes a second lens, a third lens and an image sensor arranged in sequence from bottom to top.

2. The three-dimensional measuring device for cigarette packages according to claim 1, characterized in that: The light source is a laser source.

3. The three-dimensional measuring device for cigarette packages according to claim 1, characterized in that: The surfaces of the tray and the sample positioning frame are both black.

4. The three-dimensional measuring device for cigarette packages according to claim 1, characterized in that: The tray is also provided with a plurality of positioning blocks.

5. The three-dimensional measuring device for cigarette packages according to claim 1, characterized in that: The rotation driving unit is a rotating stage.

6. The three-dimensional measuring device for cigarette packages according to claim 1, characterized in that: The lifting drive unit is a lifting platform.

7. The three-dimensional measuring device for cigarette packages according to claim 1, characterized in that: The tray is connected to the rotation drive unit via a lifting drive unit.

8. The three-dimensional measuring device for cigarette packages according to claim 1, characterized in that: The image sensor is a CMOS sensor.

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