Toothpaste tube body sealing detection device

Abstract

The utility model relates to the technical field of automation, and discloses a toothpaste tube body sealing detection device which comprises a conveyor belt, a camera and a light source, and further comprises a fixed door frame and a mounting assembly, the fixed door frame stretches across the conveyor belt, and the camera and the light source are connected with the fixed door frame through the mounting assembly and are hung above the conveyor belt; a toothpaste tube body is placed on the conveying belt through a conveying plate, a jacking assembly and a jacking air cylinder which are used for lifting the conveying plate upwards to enable the conveying plate to leave the upper surface of the conveying belt are arranged below the fixed portal frame, the fixed end of the jacking air cylinder is fixedly installed below the conveying belt, and the telescopic end of the jacking air cylinder is vertically arranged upwards; when the jacking air cylinder is in a contraction state, the telescopic end of the jacking air cylinder is lower than the conveying belt; when the jacking cylinder is in an extension state, the telescopic end of the jacking cylinder is higher than the conveyor belt; the problem that the prior art cannot be specially used for sealing detection of the toothpaste tube body is solved, and static shooting of the toothpaste tube body on the dynamic conveyor belt is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of automation, and particularly relates to a toothpaste tube body sealing detection device. Background Art

[0002] There is a toothpaste product with a cylindrical tube body. One end of the tube body is designed as a paste outlet for users to squeeze out toothpaste; the other end is the position for installing a plug body, and the amount of toothpaste squeezed out of the paste outlet is controlled by adjusting the plug body. During the production process, the paste is filled into the tube body from the plugging port. After the filling is completed, the plug body needs to be accurately inserted into the plugging port to seal the tube body and prevent the paste from leaking. Due to the fully automated characteristics of the automated production line, in order to avoid the situation of no plugging or unqualified plugging caused by equipment failures or improper operations, toothpaste tube body sealing detection needs to be set to ensure the quality of the final toothpaste product.

[0003] To overcome the deficiencies of manual inspection, vision inspection technology has been gradually introduced for quality inspection in recent years. For example, the Chinese patent "Toothpaste outer packaging vision inspection device" with the authorization publication number of CN 219597380 U includes a conveying mechanism, a chassis arranged on one side of the conveying mechanism, a controller arranged on the upper surface of the chassis, and a vision inspection mechanism is also arranged on the upper surface of the chassis. The vision inspection mechanism includes a combined bracket and several CCD cameras, infrared sensors and auxiliary light sources arranged on the combined bracket. The infrared sensor is at the same height as the side wall of the conveying mechanism and is aligned with the inside of the conveying mechanism. Several of the CCD cameras are higher than the auxiliary light source and are vertically arranged directly above the conveying mechanism.

[0004] However, this device mainly conducts visual inspection on the outer packaging, and there are obvious problems in detecting the sealed part of the toothpaste tube body: since the toothpaste tube body to be detected may be a defective product with poor sealing performance, if it is directly placed on the conveying mechanism, the paste will leak due to inclination, which will not only pollute the detection environment but also may interfere with the detection results; furthermore, when the camera takes pictures while the conveying mechanism is moving, it is easy to cause the picture data to be blurred and affect the detection accuracy; if static shooting is achieved by pausing the conveying mechanism, the conveying mechanism cannot be compatible with the transportation work of other devices, and a separate conveying mechanism needs to be configured for the detection device, which will increase the equipment cost. In the prior art, in order to achieve static shooting, the product to be detected is transferred from the conveying mechanism to an independently arranged detection table, but this also causes the detection mechanism to occupy a large amount of space. Content of the Utility Model

[0005] The purpose of the utility model is to provide a toothpaste tube body sealing detection device to solve the problem that the prior art cannot be specifically used for toothpaste tube body sealing detection and to achieve static shooting of the toothpaste tube body on a dynamic conveyor belt.

[0006] To achieve the above object, the utility model adopts the following technical scheme: a toothpaste tube body sealing detection device, including a conveyor belt, a camera and a light source, further including a fixed gantry and a mounting component. The fixed gantry spans across the conveyor belt, and the camera and the light source are connected to the fixed gantry through the mounting component and suspended above the conveyor belt;

[0007] The toothpaste tube body is placed on the conveyor belt through a conveying plate. Below the fixed gantry, there is a lifting component for lifting the conveying plate upward to make it leave the upper surface of the conveyor belt. The lifting component includes a lifting cylinder. The fixed end of the lifting cylinder is fixedly installed below the conveyor belt, and the telescopic end of the lifting cylinder is vertically upward; when the lifting cylinder is in a contracted state, the telescopic end of the lifting cylinder is lower than the conveyor belt; when the lifting cylinder is in an extended state, the telescopic end of the lifting cylinder is higher than the conveyor belt.

[0008] The principle and advantages of this solution are as follows: In actual use, the toothpaste tube body is placed on the tube body seat of the conveying plate, and the conveying plate is placed on the conveyor belt. As the conveyor belt moves, the toothpaste paste body successively passes through the paste filling place and the sealing and plugging place. As the conveyor belt continues to move, the conveying plate approaches the toothpaste tube body sealing detection device. Control the lifting cylinder to extend, lift the conveying plate and approach the camera. The conveying plate leaves the conveyor belt and stays below the camera, and the camera captures the image of the top sealing part of the toothpaste tube body; when the camera completes the acquisition of image data, the lifting cylinder contracts, and the conveying plate is placed on the conveyor belt again and moves to the next process as the conveyor belt; when the conveying plate is lifted by the lifting cylinder, the conveyor belt still moves at the original speed, which does not affect the movement of other conveying plates on the conveyor belt. The design of this device enables it to be easily integrated into the existing automated production line, and at the same time supports continuous and rapid sealing detection of multiple toothpaste tube bodies; by reasonably controlling the placement spacing of each conveying plate, it can ensure that there is no mutual interference between each conveying plate during the detection process;

[0009] This device realizes high-precision static image acquisition for toothpaste tube bodies at specific positions while the conveyor belt is moving dynamically, improving the detection efficiency and accuracy; this structure directly performs static shooting above the conveyor belt without occupying extra space; the lifting component vertically lifts the conveying plate and the toothpaste tube body a short distance away from the conveyor belt surface, effectively avoiding the problem of paste leakage that may occur during the shooting movement of toothpaste tube bodies with poor sealing, and shortening the distance between the toothpaste tube body and the camera.

[0010] As an improvement, the conveyor belt is a double belt arranged in parallel, and the lifting cylinder is located between the double belts of the conveyor belt.

[0011] The beneficial effect of this improvement is that the double-belt conveyor belt structure is more stable than a single belt and can better support the conveying plate. The lifting cylinder is located between the double belts, and can lift the conveying plate more smoothly.

[0012] As an improvement, the light source is a circular lamp ring, the camera is located above the light source, and the central axis of the camera lens coincides with the central axis of the light source.

[0013] The beneficial effect of this improvement is that the design of the circular lamp ring can provide uniform and soft light illumination, and the precise cooperation between the light source and the camera enables the camera to directly capture the image of the sealed part of the toothpaste tube under the illumination of the light source.

[0014] As an improvement, the installation component includes a vertical rod, a first connecting arm and a second connecting arm. A fixed arm extending towards the center of the fixed gantry is provided on the inner side surface of the fixed gantry, and one end of the fixed arm is detachably connected to the vertical rod; the first connecting arm and the second connecting arm are respectively detachably connected to the vertical rod. A lens fixing seat for fixing the camera is provided on the first connecting arm, and a light source fixing seat for fixing the light source is provided on the second connecting arm. The camera is installed on the lens fixing seat and shoots downward, and the light source is installed on the light source fixing seat and irradiates downward.

[0015] The beneficial effect of this improvement is that since the first connecting arm and the second connecting arm are both detachably connected to the vertical rod, the height and spacing of the camera and the light source can be flexibly adjusted according to actual detection requirements; this design enables the detection device to be applicable to toothpaste tubes of different sizes and shapes, improving the adaptability and versatility of the equipment; the connection between the vertical rod and the fixed arm can be directly adjusted to indirectly adjust the camera and the light source while keeping the relative positions of the camera and the light source unchanged, making the adjustment operation more flexible and simple.

[0016] As an improvement, a tube seat, which is a cylindrical shell with an open upper end, is provided on the conveying plate, and the inner diameter of the tube seat is larger than the outer diameter of the toothpaste tube.

[0017] The beneficial effect of this improvement is that by inserting the toothpaste tube into the tube seat, the toothpaste tube can maintain a vertical and stable posture during transportation and detection, effectively avoiding the phenomenon of tipping or tilting of the toothpaste tube due to shaking or external forces. This not only protects the toothpaste tube from damage but also ensures the accuracy and reliability of subsequent detection steps.

[0018] As an improvement, the upper opening of the tube seat is in a stepped rising shape with one end high and the other end low.

[0019] The beneficial effect of this improvement is that when the toothpaste tube is inserted into the tube seat, the lower end of the side wall of the toothpaste tube can first contact the higher arc-shaped side surface of the tube seat, enabling the toothpaste tube to be embedded in the higher-end side wall of the inner tube seat and slide smoothly along the inner wall and be inserted, reducing the operation difficulty of placing the toothpaste tube. Moreover, this design is particularly beneficial for automated operation, reducing the insertion difficulty caused by position deviation or improper angle.

[0020] As an improvement, a label reader is also installed on one side of the fixed gantry, and an electronic label is installed at one end of the conveying plate close to the label reader.

[0021] The beneficial effect of this improvement is that by assigning a unique electronic label to each toothpaste tube body and carrying these labels during transportation, the label reader can accurately identify the identity information of each toothpaste tube body. This identity recognition mechanism provides key data support for subsequent processes, enabling each toothpaste tube body to be accurately traced and managed;

[0022] During the toothpaste tube body sealing detection process, if a defect or non - compliance is found in a certain toothpaste tube body, this information can be immediately associated with the corresponding electronic label. Subsequently, during subsequent processes, by scanning the electronic label again, these non - conforming products can be quickly identified and rejected.

[0023] As an improvement, the fixed gantry is made of aluminum alloy profiles, and a stainless - steel sealing plate is fixedly connected to the outer top of the fixed gantry.

[0024] The beneficial effect of this improvement is that aluminum alloy profiles have excellent mechanical properties and corrosion resistance, can withstand large loads and maintain the structural stability, and are paired with a stainless - steel sealing plate to ensure the structural stability and reliability of the entire detection device. Brief Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of the toothpaste tube body sealing detection device.

[0026] Figure 2 It is a schematic structural diagram of the fixed gantry.

[0027] Figure 3 It is a schematic structural diagram of the conveying plate.

[0028] Figure 4 For Figure 1 The partial enlarged view at A in Detailed Description of the Specific Embodiment

[0029] The following is a further detailed description through specific embodiments:

[0030] The reference numerals in the attached drawings of the specification include: toothpaste tube body sealing detection device 1, tube body sealing mechanism 2, conveyor belt 3, toothpaste tube body 4, fixed gantry 5, camera 6, light source 7, vertical rod 8, first connecting arm 9, second connecting arm 10, fixed arm 11, conveying plate 12, lifting cylinder 13, label reader 14, electronic label 15, and tube body seat 16.

[0031] Embodiment

[0032] Basically as shown in the attached Figure 1As shown, a toothpaste tube body sealing detection device is disclosed. The toothpaste tube body sealing detection device and the tube body sealing mechanism are located on the same conveyor belt. The tube body sealing mechanism is used to insert the inner plug of the toothpaste tube body into the filled toothpaste tube body to seal the paste in the tube body. The toothpaste tube body sealing detection device is used to detect the toothpaste tube body with the inner plug installed. The image of the plugging end of the tube body is captured by a camera, and the image data is transmitted to the image processing system. The captured image often contains noise and interference, and these adverse factors need to be eliminated through preprocessing steps. The preprocessing methods include image denoising, image filtering, grayscale transformation, edge detection, etc. The image system then uses algorithms to extract the key feature information of the target in the image data. In the toothpaste tube body sealing detection, these features may include the shape, color, texture, etc. of the plugging end of the tube body. There are various feature extraction methods, such as edge detection, corner detection, texture analysis, etc. The extracted features are compared with the preset standard features. This standard feature represents the features that a qualified toothpaste tube body plugging and sealing operation should possess. By comparing the similarity, it can be judged whether the plugging and sealing operation is qualified. If the similarity is lower than the set threshold, the product is considered unqualified, and the judged unqualified products are removed and remanufactured.

[0033] As shown in the appendix Figure 2 As shown, the toothpaste tube body sealing detection device includes a fixed gantry, a camera for collecting image data of the plugging part of the toothpaste tube body, a light source for supplementing light for image acquisition, and a label reader for identifying the toothpaste identity. The fixed gantry straddles the conveyor belt, and the two bottom ends of the fixed gantry are respectively fixedly installed outside both sides of the conveyor belt. The conveyor belt passes through the lower part of the fixed gantry.

[0034] The camera and the light source are installed in the fixed gantry through an installation component, so that the camera and the light source are suspended above the conveyor belt. The installation component includes a vertical rod, a first connecting arm, and a second connecting arm. A fixed arm extending towards the center of the fixed gantry is provided on the inner side surface of the fixed gantry. One end of the fixed arm is fixedly connected to one inner wall of the fixed gantry by means of bolts or welding, and the other end of the fixed arm is detachably connected to the vertical rod.

[0035] The detachable connection structure between the fixed arm screw and the vertical rod is a bolt locking connection structure, that is, a hole for accommodating the vertical rod is provided on the fixed arm, and the hole is in the form of an open mouth, and a bolt assembly is installed at the open part of the hole. The bolt of the bolt assembly passes through both ends of the open part in sequence, and the distance between the two ends is adjusted by tightening the nut, so as to realize the adjustment of the hole size. The bolt locking connection structure uses the cooperation of the bolt and the nut, and generates a pre-tightening force by rotating the bolt to firmly lock the vertical rod in the hole of the fixed arm.

[0036] Both the first connecting arm and the second connecting arm are detachably connected to the vertical rod. The connection methods of the first connecting arm and the second connecting arm to the vertical rod are both bolt-locking connections. At the other end of the first connecting arm away from the connection, there is a lens fixing seat for fixing the camera lens of the camera. At the other end of the second connecting arm away from the connection, there is a light source fixing seat for fixing the light source. The camera lens is detachably connected and installed on the lens fixing seat and shoots downward. The light source is detachably connected to the light source fixing seat and irradiates downward, and the lens fixing seat is located above the light source fixing seat.

[0037] If the light source is an annular lamp ring, then the light source fixing seat is annular and suitable for the light source. The lens fixing seat is located above the light source fixing seat, and the lens fixing seat and the light source fixing seat share the same central axis.

[0038] As shown in the appendix Figure 3 As shown, the toothpaste tube body is placed on the conveyor belt through the conveying plate. There is a tube body seat 16 for fixing the toothpaste tube body on the conveying plate. The tube body seat 16 is a cylindrical shell with an open upper end. The inner diameter of the tube body seat 16 is larger than the outer diameter of the toothpaste tube body. The upper opening of the tube body seat 16 is in a stepped rising shape with one end high and one end low. The toothpaste tube body is placed in the tube body seat 16 to ensure that the toothpaste tube body is placed stably on the conveying plate. The conveyor belt is a double belt arranged in parallel, and both ends of the lower surface of the conveying plate are placed on the double belts of the conveyor belt.

[0039] As shown in the appendix Figure 4 As shown, there is also a jacking assembly for separating the conveying plate from the conveyor belt below the conveyor belt. The jacking assembly includes two jacking cylinders. The two jacking cylinders are respectively located inside the double belts of the conveyor belt. The fixed ends of the jacking cylinders are fixedly installed below the conveyor belt, and the telescopic ends of the jacking cylinders are arranged vertically upward. When the jacking cylinder is in the retracted state, the telescopic end of the jacking cylinder is lower than the conveyor belt; when the jacking cylinder is in the extended state, the telescopic end of the jacking cylinder is higher than the conveyor belt.

[0040] The label reader is installed on one side of the fixed gantry, and an electronic label is installed at one end of the conveying plate close to the label reader. The electronic label corresponds to the work order information of the toothpaste product. The label reader identifies the electronic label, determines whether a toothpaste product passes by and needs to be subjected to paste sealing detection, and then identifies its identity and the affiliated work order, determines whether the production of this work order is qualified. If it is unqualified, unqualified information is written into its electronic label, and the unqualified product will be removed from the production line in the subsequent process and re-produced.

[0041] The specific implementation process is as follows:

[0042] The toothpaste tube body is placed on the tube seat 16 of the conveying plate. The conveying plate is placed on the conveyor belt. As the conveyor belt moves, the toothpaste paste passes through the paste filling area and the sealing and plugging area in sequence. The paste filling area fills the paste into the toothpaste tube body from the top of the toothpaste tube body. The sealing and plugging area inserts the sealing plug into the toothpaste tube body from the top by the tube body sealing mechanism to close the filling port.

[0043] As the conveyor belt continues to move, the conveying plate approaches the toothpaste tube body sealing detection device. When the label reader reads the electronic label, it controls the lifting cylinder to extend, lifts the conveying plate and approaches the camera. The conveying plate disengages from the conveyor belt and stays below the camera. At this time, the central axis of the camera's camera, light source and the toothpaste tube body are collinear. The light source illuminates the top sealing part of the toothpaste tube body, and the camera's imaging screen passes through the center of the annular light source to capture the image of the top sealing part of the toothpaste tube body. And the image data is uploaded to the image processing system to judge whether there are situations of no plugging and poor plugging (such as breakage, deformation, skew, non-in-place) after the plugging process of the toothpaste tube body, timely discover and eliminate the products with the risk of paste leakage, and ensure the product production quality.

[0044] When the camera finishes collecting the image data, the lifting cylinder contracts, and the conveying plate is placed on the conveyor belt again. As the conveyor belt moves to the next process. Wait for the conveyor belt to move the next toothpaste tube body to the toothpaste tube body sealing detection device and repeat the detection operation.

[0045] When the conveying plate is lifted by the lifting cylinder, the conveyor belt still moves at the original speed, which does not affect the movement of other conveying plates on the conveyor belt. By reasonably controlling the placement spacing of each conveying plate, interference between the conveying plates can be avoided.

[0046] The fixed gantry is made of aluminum alloy profiles, and the outer top of the fixed gantry is fixedly connected with a stainless steel sealing plate, and the surface of the stainless steel sealing plate is subjected to wire drawing treatment. The camera is a CCD camera, and the control system of the toothpaste tube body sealing detection device is configured with a host computer to communicate and interact with the PLC.

[0047] The above are only the embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics well known in the solution are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners in the specification can be used to interpret the content of the claims.

Claims

1. Toothpaste tube body sealing detection device, comprising a conveyor belt, a camera and a light source, characterized in that: It further includes a fixed gantry and a mounting assembly. The fixed gantry spans across the conveyor belt, and the camera and the light source are connected to the fixed gantry through the mounting assembly and suspended above the conveyor belt. The toothpaste tube body is placed on the conveyor belt through a conveying plate. Below the fixed gantry, there is a lifting assembly for lifting the conveying plate upward to make it leave the upper surface of the conveyor belt. The lifting assembly includes a lifting cylinder. The fixed end of the lifting cylinder is fixedly installed below the conveyor belt, and the telescopic end of the lifting cylinder is vertically upward. When the lifting cylinder is in a contracted state, the telescopic end of the lifting cylinder is lower than the conveyor belt. When the lifting cylinder is in an extended state, the telescopic end of the lifting cylinder is higher than the conveyor belt.

2. The toothpaste tube body sealing detection device according to claim 1, wherein: The conveyor belt is a double belt arranged in parallel, and the lifting cylinder is located between the double belts of the conveyor belt.

3. The toothpaste tube body sealing detection device according to claim 1, characterized in that: The light source is an annular lamp ring. The camera is located above the light source, and the central axis of the camera's camera lens coincides with the central axis of the light source.

4. The toothpaste tube body sealing detection device according to claim 3, wherein: The mounting assembly includes a vertical rod, a first connecting arm, and a second connecting arm. On the inner side surface of the fixed gantry, there is a fixed arm extending towards the center of the fixed gantry. One end of the fixed arm is detachably connected to the vertical rod. The first connecting arm and the second connecting arm are respectively detachably connected to the vertical rod. The first connecting arm is provided with a lens fixing seat for fixing the camera, and the second connecting arm is provided with a light source fixing seat for fixing the light source. The camera is installed on the lens fixing seat and shoots downward, and the light source is installed on the light source fixing seat and irradiates downward.

5. The toothpaste tube body sealing detection device according to claim 1, characterized in that: The conveying plate is provided with a tube seat which is a cylindrical shell with an upper end opening, and the inner diameter of the tube seat is larger than the outer diameter of the toothpaste tube body.

6. The toothpaste tube body sealing detection device according to claim 5, characterized in that: The upper end opening of the tube seat is in a stepped rising shape with one end high and one end low.

7. The toothpaste tube body sealing detection device according to claim 6, characterized in that: A label reader is also installed on one side of the fixed gantry, and an electronic label is installed at one end of the conveying plate close to the label reader.

8. The toothpaste tube body sealing detection device according to claim 7, wherein: The fixed gantry is made of aluminum alloy profile, and a stainless steel sealing plate is fixedly connected to the outer top of the fixed gantry.

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