Barrel surface heat shrinkage film defect identification device

Abstract

The utility model relates to film sealing detection of heat shrinkage film products, in particular to a defect identification device for a barrel surface heat shrinkage film. The conveying belt line comprises a feeding belt line and a discharging belt line which are mounted on the surface of the working platform; a clamping type conveying line composed of a left clamping belt unit and a right clamping belt unit is arranged between the feeding belt line and the discharging belt line, and the clamping type conveying line can clamp the barrel noodles conveyed by the feeding belt line and forwards convey the barrel noodles to the discharging belt line; a space for allowing the barrel noodle to pass through is reserved between the left clamping belt unit and the right clamping belt unit, and a bottom camera for detecting the bottom defect of the barrel noodle is arranged below the space. And four cameras are mounted on the working platform. The recognition device is designed to be a detection station, a plurality of functional stations are arranged in the recognition device to detect the outer film of the barreled noodles, and the recognition device is efficient, comprehensive and convenient to implement.

Description

Technical Field

[0001] The utility model relates to the film sealing detection of heat shrinkable film products, in particular to a defect recognition device for the heat shrinkable film of instant noodle buckets. Background Art

[0002] As a common packaging method, the heat shrinkable film packaging of products is widely used in many fields such as food, beverages, cosmetics, and electronic products. The heat shrinkable film can not only effectively protect the product from damage but also enhance the appearance beauty of the product. Although the heat shrinkable film packaging has many advantages, there are inevitably some potential problems and deficiencies. For example, there may be problems such as poor shrinkage, uneven heating, improper packaging size (both too large or too small film size may lead to poor shrinkage effect), the film not being tightened during the packaging process resulting in wrinkles after heat shrinkage, incomplete sealing at the sealing part causing air to enter and form bubbles, and the film not being able to fully fit due to raised parts on the product surface. These problems will all affect the final product quality.

[0003] Especially in the production of instant noodle buckets, the heat shrinkable film is a standard configuration, and its quality is crucial. Before the instant noodle buckets are packaged and ready for shipment, strict outer packaging inspection must be carried out on them. Since the shape of the instant noodle bucket is an irregular hexahedron, it has always been a challenge to use traditional equipment for comprehensive film sealing damage detection. To solve this problem, a new device dedicated to heat shrinkable film detection has been developed to effectively complete the comprehensive detection task of the outer surface of instant noodle buckets. Summary of the Invention

[0004] The utility model aims at the defects existing in the prior art and provides a defect recognition device for the heat shrinkable film of instant noodle buckets.

[0005] To achieve the above object, the utility model adopts the following technical solutions. A defect recognition device for the heat shrinkable film of instant noodle buckets includes a feeding belt line and a discharging belt line installed on the workbench surface of the workstation; between the feeding belt line and the discharging belt line, there is a clamping type conveying line composed of a left clamping belt unit and a right clamping belt unit. This clamping type conveying line can clamp and forward the instant noodle buckets transported by the feeding belt line to the discharging belt line; and there is a space for the instant noodle buckets to pass between the left clamping belt unit and the right clamping belt unit, and a bottom camera for detecting defects at the bottom of the instant noodle buckets is arranged below this space.

[0006] Four cameras are installed on the workbench of the workstation: one top inspection camera and three side inspection cameras. Among them, the top inspection camera is located above the discharging belt line and is used to photograph the top of the instant noodle bucket; the three side inspection cameras are located on the side of the discharging belt line and are used to respectively photograph three different sides of the instant noodle buckets on the discharging belt line.

[0007] Further, the identification device further includes an empty box air nozzle installed on one side of the inlet end of the feeding belt line; the empty box air nozzle is used to blow off the empty boxes on the barrel surface of the feeding belt for rejection; the empty box air nozzle is fixed to the workbench through an empty box air nozzle mounting bracket; on the other side of the inlet end of the feeding belt line, a ramp-shaped empty box outlet is installed, which is used for the empty boxes on the barrel surface to slide down to the recycling device when blown off.

[0008] Further, the positions of the empty box air nozzle and the ramp-shaped empty box outlet are opposite to each other.

[0009] Further, the identification device further includes a defective product nozzle installed on one side of the outlet end of the discharging belt line; the defective product nozzle is used to blow off the defective barrel surfaces on the discharging belt for rejection; the defective product nozzle is fixed to the rack of the discharging belt through a defective product nozzle bracket; on the other side of the outlet end of the discharging belt line, a ramp-shaped defective product rejection opening is installed, which is used for the defective barrel surfaces to slide down to the recycling device when blown off by the defective product nozzle.

[0010] Further, the left clamping belt unit and the right clamping belt unit have the same structure and are arranged in a mirror image.

[0011] Further, the center lines of the three side inspection cameras are distributed at the three equal division points of the circumference of the same circle.

[0012] Further, all four cameras are installed on the workbench through their respective camera brackets.

[0013] Further, each camera adopts a 1.3 million pixel area array industrial camera.

[0014] Further, the left clamping belt unit and the right clamping belt unit have the same structure, and both include a mounting column fixed on the workbench, a cross-shaped connecting piece one, a cross-shaped connecting piece two, a cross bar one, and a cross bar two; the top of the mounting column passes through the longitudinal hole of the cross-shaped connecting piece one, one end of the cross bar one passes through the transverse hole of the cross-shaped connecting piece one, the other end of the cross bar one passes through the transverse hole of the cross-shaped connecting piece two, one end of the cross bar two passes through the longitudinal hole of the cross-shaped connecting piece two, a connecting block is fixedly connected to the other end of the cross bar two, a mounting plate is fixedly connected to the bottom of the connecting block, a pulley group is installed at the bottom of the mounting plate, and a motor for driving the pulley group is installed on the top surface of the mounting plate.

[0015] The beneficial effects of the present utility model compared with the prior art.

[0016] The identification device of the present utility model is designed as an inspection station, which has multiple functional workstations inside to perform the outer film inspection work on bucket noodles, being efficient and achieving comprehensive convenience. An unqualified product rejection mechanism is designed at the outlet of the identification device to reject the products with unqualified outer seals; an empty packaging box rejection mechanism is set at the inlet of the identification device to facilitate the rejection of the packaging boxes without noodles. In addition, the identification device is also provided with a special conveying structure to facilitate the vision system to complete the inspection work on the bottom and side of the bucket noodles with heat shrinkable films, making the inspection work efficient and reliable. Brief Description of the Drawings

[0017] The present utility model will be further described below in conjunction with the drawings and specific embodiments. The protection scope of the present utility model is not limited to the description of the following content.

[0018] Figure 1 is a three-dimensional view of a device for identifying defects in the heat shrinkable film of bucket noodles Figure 1 ;

[0019] Figure 2 is a front view of a device for identifying defects in the heat shrinkable film of bucket noodles;

[0020] Figure 3 is a three-dimensional view of a device for identifying defects in the heat shrinkable film of bucket noodles Figure 2 ;

[0021] Figure 4 is a three-dimensional view of a device for identifying defects in the heat shrinkable film of bucket noodles without the outer cover Figure 1 ;

[0022] Figure 5 is a three-dimensional view of a device for identifying defects in the heat shrinkable film of bucket noodles without the outer cover Figure 2 ;

[0023] Figure 6 is a top view of a device for identifying defects in the heat shrinkable film of bucket noodles;

[0024] Figure 7 is a sectional view taken along line B-B of a device for identifying defects in the heat shrinkable film of bucket noodles;

[0025] Figure 8 is a three-dimensional view of the clamping type conveying line of a device for identifying defects in the heat shrinkable film of bucket noodles Figure 1 ;

[0026] Figure 9 is a front view of the clamping type conveying line of a device for identifying defects in the heat shrinkable film of bucket noodles;

[0027] Figure 10 is a three-dimensional view of the clamping type conveying line of a device for identifying defects in the heat shrinkable film of bucket noodles Figure 2 .

[0028] In the figure, 1 is the feeding belt line; 2 is the empty box outlet; 3 is the mounting bracket for the empty box air nozzle; 4 is the empty box air nozzle; 5 is the outer cover of the inspection machine; 6 is the discharging belt line; 7 is the defective product rejection opening; 8 is the defective product nozzle; 9 is the defective product nozzle bracket; 10 is the buffer position; 11 is the first inspection unit; 12 is the second inspection unit; 13 is the workbench surface.

[0029] 1201. Top inspection camera bracket; 1202. Top inspection camera; 1203. Side inspection camera two bracket; 1204. Side inspection camera two; 1205. Side inspection camera one bracket; 1206. Side inspection camera one; 1207. Side inspection camera three bracket; 1208. Side inspection camera three.

[0030] 1101. Left clamping belt unit; 1102. Right clamping belt unit.

[0031] 110101. Installation column; 110102. Cross-shaped connector one; 110103. Crossbar one; 110104. Cross-shaped connector two; 110105. Crossbar two; 110106. Connection block; 110107. Installation plate; 110108. Motor; 110109. Pulley set; 110110. Bottom inspection camera bracket; 110111. Bottom inspection camera. Detailed implementation mode

[0032] To better understand the technical solution of the present utility model, specific implementation schemes are provided as follows; and the following schemes are only for illustration.

[0033] As Figures 1 - 10 shown, the barrel surface heat shrink film defect recognition device of the present utility model includes a feeding belt line 1 and a discharging belt line 6 installed on the workbench surface 13; the workbench is covered by the outer cover 5 of the inspection machine.

[0034] A clamping conveyor line composed of a left clamping belt unit 1101 and a right clamping belt unit 1102 is arranged between the feeding belt line 1 and the discharging belt line 6. The clamping conveyor line can clamp and forwardly convey the barrel surface transported by the feeding belt line 1 to the discharging belt line 6; and a space for the barrel surface to pass through is left between the left clamping belt unit 1101 and the right clamping belt unit 1102, and a bottom camera for detecting defects at the bottom of the barrel surface is arranged below this space. Specifically, the clamping conveyor line can clamp and forwardly convey the barrel surface for the bottom camera to detect defects at the bottom of the barrel surface. The space between the left clamping belt unit 1101 and the right clamping belt unit 1102 for clamping the barrel surface, and the bottom camera is used to detect defects at the bottom of the barrel surface when the clamping conveyor line conveys the barrel surface.

[0035] Four cameras are installed on the workstation table 13: one top inspection camera and three side inspection cameras. Among them, the top inspection camera is located above the discharge belt line 6 and is used to photograph the top of the barrel surface; the three side inspection cameras are located on the side of the discharge belt line 6 and are used to photograph three different sides of the barrel surface on the discharge belt line 6 respectively.

[0036] Preferably, the identification device further includes an empty box air nozzle 4 installed on one side of the inlet end of the inlet belt line 1; the empty box air nozzle 4 is used to blow off and eliminate the empty boxes on the barrel surface of the inlet belt line 1; the empty box air nozzle 4 is fixed to the workstation table 13 through an empty box air nozzle mounting bracket 3; a ramp-shaped empty box outlet 2 is installed on the other side of the inlet end of the inlet belt line 1, and the empty box air nozzle 4 is opposite to the ramp-shaped empty box outlet 2. When the empty box of the barrel surface is blown off, it slides down from the ramp-shaped empty box outlet 2 to the recycling device.

[0037] Preferably, the identification device further includes a defective product nozzle 8 installed on one side of the outlet end of the discharge belt line 6. The defective product nozzle 8 is used to blow off and eliminate the defective barrel surfaces on the discharge belt line 6; when the defective barrel surface is conveyed to the defective product nozzle 8 along the discharge belt line 6, the defective product nozzle 8 starts to blow air, blows off the defective barrel surface, and slides down along the ramp of the defective product rejection port 7 to the recycling device. The defective product nozzle 8 is fixed to the frame of the discharge belt line 6 through a defective product nozzle bracket 9; a ramp-shaped defective product rejection port 7 is installed on the other side of the outlet end of the discharge belt line 6. When the defective barrel surface is blown off by the defective product nozzle 8, it slides down from the defective product rejection port 7 to the recycling device. Specifically, the ramp-shaped defective product rejection port 7 has the same structure as the ramp-shaped empty box outlet 2, and both provide a sliding channel to the recycling device.

[0038] Preferably, the left clamping belt unit 1101 and the right clamping belt unit 1102 have the same structure and are arranged in a mirror image. Specifically, the clamping conveyor line composed of the left clamping belt unit 1101 and the right clamping belt unit 1102 constitutes the first detection unit 11, which can clamp and convey the barrel surface forward.

[0039] Preferably, the four cameras are all installed on the workstation table 13 through their respective camera brackets. Each camera uses a 1.3 million pixel area array industrial camera. The specific model is MV-CA013-A0GM of Hikvision. Moreover, the center lines of the three side inspection cameras are distributed at the three equal division points of the circumference of the same circle. One side inspection camera is installed on one side of the discharge belt line 6, and two side inspection cameras are installed on the other side; and the detection range of each side inspection camera is 120 degrees, which perfectly covers 360 degrees of the barrel surface.

[0040] Preferably, the left clamping belt unit 1101 and the right clamping belt unit 1102 have the same structure, and both include an installation column 110101 fixed on the workbench surface 13, a cross-shaped connector one 110102, a cross-shaped connector two 110104, a crossbar one 110103, and a crossbar two 110105. The top of the installation column 110101 passes through the longitudinal hole of the cross-shaped connector one 110102, one end of the crossbar one 110103 passes through the transverse hole of the cross-shaped connector one 110102, the other end of the crossbar one 110103 passes through the transverse hole of the cross-shaped connector two 110104, one end of the crossbar two 110105 passes through the longitudinal hole of the cross-shaped connector two 110104, a connection block 110106 is fixedly connected to the other end of the crossbar two 110105, an installation plate 110107 is fixedly connected to the bottom of the connection block 110106, a pulley set 110109 is installed at the bottom of the installation plate 110107, and a motor 110108 for driving the pulley set 110109 is installed on the top surface of the installation plate 110107.

[0041] Specifically, the cross-shaped connector is also called a smooth shaft clamp seat, which is a conventional component for connecting components in four directions. Its basic structure is in the shape of a "cross". The crossbar one and the crossbar two (i.e., the smooth shafts) form the arms (or legs) of the cross-shaped connector, and both the cross-shaped connector one and the cross-shaped connector two are adjustable cross-shaped connectors, which can adjust the insertion length of the crossbar one and the crossbar two relative to the cross-shaped connector to achieve the purpose of adjusting the length of the arms. Finally, the purpose of adjusting the X-axis and Y-axis directions of the pulley set is achieved. This will not be elaborated here.

[0042] Introduction to the connection relationship of the present utility model:

[0043] 1. The barrel surface heat shrink film defect recognition device is composed of a workbench surface 13 and an infeed belt line 1 and an outfeed belt line 6 installed on the workbench surface. Four cameras are installed on the outfeed belt line 6. One camera is installed at the upper end of the outfeed belt line 6 to complete the photographing and recognition detection of the top of the barrel surface, and the other three cameras are installed on both sides of the outfeed belt line 6 to complete the photographing and recognition detection of the side of the barrel surface (the three cameras on the side respectively detect the side 1 area, the side 2 area, and the side 3 area). A conveying line composed of a left clamping belt unit 1101 and a right clamping belt unit 1102 is arranged between the infeed belt line 1 and the outfeed belt line 6, which can realize the clamping of both sides of the conveyed barrel surface and the forward running and conveying at the same time. During the conveying process, the bottom inspection camera completes the defect detection of the bottom of the barrel surface.

[0044] 2. An empty box air nozzle 4 mounting bracket and an empty box air nozzle 4 are installed on one side of the inlet end of the infeed belt line 1. The direction of the empty box air nozzle 4 is aligned with the infeed conveyor line 1, and an empty box outlet 2 ramp device is installed on the other side corresponding to the empty box air nozzle 4.

[0045] 3. One side of the outlet end of the discharge belt line 6 is equipped with a non-conforming product nozzle support and a non-conforming product nozzle. The direction of the non-conforming product nozzle is aligned with the discharge conveyor line, and a slope device for the non-conforming product removal port 7 is installed on the other side corresponding to the non-conforming product nozzle.

[0046] 4. The first detection unit 11 is a conveyor line composed of a left clamping belt unit 1101 and a right clamping belt unit 1102. This conveyor line can clamp both sides of the bucket noodles coming from the feeding conveyor line and transport them forward while running.

[0047] 5. The left clamping belt unit 1101 and the right clamping belt unit 1102 have the same structure and are mirror - set.

[0048] 6. The left clamping belt unit 1101 consists of a mounting column 110101 installed on the workbench surface 13 and a cross - shaped connecting piece one connected to the mounting column 110101. The cross - shaped connecting piece one is connected to a crossbar one 110103, the crossbar one 110103 is connected to a cross - shaped connecting piece two 110104, the cross - shaped connecting piece two 110104 is connected to a crossbar two 110105. A connecting block is fixedly connected to the other end of the crossbar two 110105, and a mounting plate 110107 is fixedly connected to the lower plane of the connecting block. A pulley group 110109 is installed below the mounting plate 110107, and a motor 110108 is also installed on the mounting plate 110107, which is connected to the pulley group 110109 to drive the pulley group 110109.

[0049] Introduction to the working process of the present utility model:

[0050] 1. When the bucket noodles enter the recognition device from the feeding belt line 1, a detection and rejection mechanism for empty boxes (no noodles placed in the box) is set at the feeding port; the empty - box jet nozzle 4 always jets air towards the line side with a certain air flow rate. When the bucket noodles pass through, if there are no noodles placed in the bucket noodles, the quality of the bucket noodles is lighter, and the set jet air flow is sufficient to blow the empty bucket noodles without noodles towards the empty - box outlet, and then they fall and are recycled from the empty - box outlet 2.

[0051] 2. After passing through the empty - box detection mechanism at the feeding port, the bucket noodles enter the buffer position 10 and wait at the buffer position 10.

[0052] 3. The bucket noodles are transported from the buffer position of the feeding belt line 1 to the clamping conveyor line. When the left and right driving units drive the pulley groups to run relatively, the bucket noodles are clamped by the pulley groups on both sides and transported forward. During the transportation process, the bottom of the bucket noodles is photographed and recognized by the bottom - inspection camera 110111.

[0053] 4. The bucket noodles enter the second detection unit after passing through the clamping conveyor line. The second detection unit is arranged on the discharge belt line. There are 4 cameras installed on the position frame of the second detection unit. One camera is used to take pictures and identify the top of the bucket noodles, and the other three cameras are used to take pictures and identify the sides of the bucket noodles (the three cameras on the side respectively detect the side area 1, side area 2, and side area 3).

[0054] 5. After the bucket noodles complete the second detection unit, they enter the discharge port, and there is a rejection for defective shrink films at the discharge port.

[0055] 6. When the detected bucket noodles pass through the defective product rejection port mechanism, the defective product nozzle 8 will eject a strong air flow when there is a bucket noodle passing through. The air flow intensity is sufficient to eject a bucket noodle from the defective product rejection port 7 and cause it to fall. The bucket noodles with no defects in the shrink film can be smoothly output from the discharge belt line 6.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; thus, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope defined by the claims of the present invention.

Claims

1. A device for identifying defects in heat shrinkable film on barrel surface, characterized in that: The invention comprises a feeding belt line (1) and a discharging belt line (6) installed on a workstation table (13); characterized in that a clamping conveyor line composed of a left clamping belt unit (1101) and a right clamping belt unit (1102) is arranged between the feeding belt line (1) and the discharging belt line (6), and the clamping conveyor line can clamp the barrel surface transported by the feeding belt line (1) and convey it forward to the discharging belt line (6); and a space for accommodating the barrel surface passing through is reserved between the left clamping belt unit (1101) and the right clamping belt unit (1102), and a bottom camera for detecting defects on the bottom of the barrel surface is arranged below the space; Four cameras are installed on the workstation table (13): one top inspection camera and three side inspection cameras, wherein the top inspection camera is located above the discharge belt line (6) and is used to photograph the top of the barrel surface; the three side inspection cameras are located on the side of the discharge belt line (6) and are used to photograph three different sides of the barrel surface on the discharge belt line (6).

2. The barrel surface heat shrink film defect identification device according to claim 1, characterized in that: The identification device also includes an empty box air nozzle (4) installed on one side of the inlet end of the feeding belt line (1); the empty box air nozzle (4) is used to blow off and remove the empty boxes on the barrel surface of the feeding belt line (1); The empty box air nozzle (4) is fixed on the workstation table (13) via an empty box air nozzle mounting frame (3); a sloped empty box outlet (2) is installed on the other side of the inlet end of the feeding belt line (1) so that when the empty boxes on the barrel surface are blown off, they slide down from the sloped empty box outlet (2) to the recovery device.

3. The barrel surface heat shrink film defect identification device according to claim 2, characterized in that: The empty box air jet nozzle (4) is located opposite to the sloped empty box outlet (2).

4. The barrel surface heat shrink film defect identification device according to claim 1, characterized in that: The identification device further comprises a defective product nozzle (8) installed on one side of the outlet end of the discharging belt line (6), the defective product nozzle (8) being used to blow off and remove defective barrel surfaces on the discharging belt line (6); the defective product nozzle (8) is fixed to the frame of the discharging belt line (6) through a defective product nozzle bracket (9); and a sloped defective product removal port (7) is installed on the other side of the outlet end of the discharging belt line (6), so that when the defective barrel surfaces are blown off by the defective product nozzle (8), they slide from the defective product removal port (7) to the recovery device.

5. The barrel surface heat shrink film defect identification device according to claim 1, characterized in that: The left clamping belt unit (1101) and the right clamping belt unit (1102) have the same structure and are arranged in a mirror image.

6. The barrel surface heat shrink film defect identification device according to claim 1, characterized in that: The center lines of the three side inspection cameras are distributed on the three equally divided points of the same circle.

7. The barrel surface heat shrink film defect identification device according to claim 1, characterized in that: The four cameras are all mounted on the workstation table (13) via respective camera brackets.

8. The barrel surface heat shrink film defect identification device according to claim 1, characterized in that: Each camera uses a 1.3-megapixel area array industrial camera.

9. The barrel surface heat shrink film defect identification device according to claim 1, characterized in that: The left clamping belt unit (1101) and the right clamping belt unit (1102) have the same structure, and both include a mounting column (110101), a cross-shaped connecting piece 1 (110102), a cross-shaped connecting piece 2 (110104), a cross bar 1 (110103), and a cross bar 2 (110105) fixed on the workstation table (13); the top of the mounting column (110101) passes through the longitudinal hole of the cross-shaped connecting piece 1 (110102), one end of the cross bar 1 (110103) passes through the transverse hole of the cross-shaped connecting piece 1 (110102), and the cross bar 1 (1101 03) passes through the transverse hole of the cross-shaped connecting piece 2 (110104), one end of the cross bar 2 (110105) passes through the longitudinal hole of the cross-shaped connecting piece 2 (110104), a connecting block (110106) is fixedly connected to the other end of the cross bar 2 (110105), a mounting plate (110107) is fixedly connected to the bottom of the connecting block (110106), a pulley group (110109) is installed at the bottom of the mounting plate (110107), and a motor (110108) for driving the pulley group (110109) is installed on the top surface of the mounting plate (110107).

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