Dairy product bag body sealing detection device and dairy product packaging production system

Abstract

The utility model belongs to the technical field of dairy product production equipment, and discloses a dairy product bag body sealing detection device and a dairy product packaging production system. The lifting mechanism is located above the belt type checkweigher and comprises a compression air cylinder and a compression rod, one end of the compression rod is connected with the compression air cylinder, the other end of the compression rod is connected with a pressing plate, the pressing plate is parallel to the surface of the conveying belt, and the compression air cylinder is connected with the compression air cylinder. The compression cylinder drives the compression rod to drive the pressing plate to reciprocate up and down; and the belt type checkweigher and the compression air cylinder are electrically connected with the control system. In the detection process, the control system automatically controls the lifting mechanism to ascend and descend and also automatically controls the belt type checkweigher to work, manual one-by-one detection is not needed in the whole process, manpower is saved, especially when the detection amount is large, the detection efficiency is high, and the device is suitable for continuous detection on an assembly line.

Description

Technical Field

[0001] The utility model belongs to the technical field of dairy product production equipment, and particularly relates to a dairy product package sealing detection device and a dairy product packaging production system. Background Art

[0002] When conducting food safety testing on packaged foods, the airtightness of the packaging bag is an important test item. If the packaging bag is not airtight, it is very easy for the food in the packaging bag to deteriorate quickly, which not only affects the health of the people who eat it, but also causes losses to the food processing plant. Therefore, the packaged package must be tested for sealing. In the prior art, application number 202020920435.9 discloses a sealing test device for a bag-type tablet packaging production line. The packaged packaging bag is placed in a sealed test box, and then air is instantly introduced into the sealed test box through a pressure pump through a pressure pipe to reach a specific critical pressure. The pressure value is detected by a pressure sensor, and then a decibel detector is used to detect whether there is a sudden increase in decibels within a specified time. If so, it means that the packaging is intact. If not, it means that the package is leaking. This method must ensure the airtightness of the sealed test box during the detection process. It is only suitable for random inspections and cannot be adapted to continuous testing on the assembly line. The efficiency is low.

[0003] In the dairy industry, common testing methods involve testing the integrity of packaging, such as Baileys bags, through methods like tearing, dissolution testing, penetration testing, dropping, and squeezing. To ensure food safety, the dairy industry conducts a significant volume of seal testing on dairy packaging. These methods are not suitable for continuous testing on assembly lines and are inefficient when testing large volumes. Summary of the Invention

[0004] Based on this, the present application provides a dairy package sealing detection device and a dairy packaging production system to solve the technical problem in the existing technology in the dairy industry that traditional detection methods cannot adapt to continuous detection on the assembly line and have low efficiency when the detection volume is large.

[0005] The technical solutions of this application to solve the above technical problems are as follows:

[0006] A dairy product package sealing detection device, comprising:

[0007] A belt-type checkweigher having a conveyor belt;

[0008] A lifting mechanism, the lifting mechanism is located above the belt checkweigher, and includes a compression cylinder and a compression rod, one end of the compression rod is connected to the compression cylinder, and the other end of the compression rod is connected to a pressure plate, the pressure plate is parallel to the surface of the conveyor belt, and the compression cylinder drives the compression rod to drive the pressure plate to perform up and down reciprocating motion;

[0009] The control system is electrically connected to the belt checkweigher and the compression cylinder.

[0010] Preferably, the dairy package sealing detection device, the belt checkweigher is further provided with a package sensing device, and the package sensing device is electrically connected to the control system.

[0011] Preferably, the dairy package sealing detection device further comprises a sealing buckle cover, a sealing buckle cover is slidably provided on the compression rod, and the pressure plate is located inside the sealing buckle cover, and the opening of the sealing buckle cover faces the belt-type checkweigher.

[0012] Preferably, in the above-mentioned dairy package sealing detection device, a retaining ring is fixedly provided on the compression rod, and the retaining ring is located between the sealing buckle cover and the pressure plate.

[0013] Preferably, in the above-mentioned dairy package sealing detection device, the sealing buckle cover is further provided with a plurality of cleaning nozzles, and the water spraying direction of the cleaning nozzles is toward the inside of the sealing buckle cover.

[0014] Preferably, the above-mentioned dairy package sealing detection device further includes a waste liquid recovery tank, which is arranged at the end of the conveying direction of the belt-type checkweigher and is lower than the conveyor belt.

[0015] Preferably, in the above-mentioned dairy package sealing detection device, a roller brush is provided at the top end of one side of the waste liquid recovery tank, and the roller brush is used on the surface of the conveyor belt.

[0016] Preferably, the dairy package sealing detection device is provided with water retaining ribs along the conveying direction of the conveyor belt, and the water retaining ribs are higher than the surface of the conveyor belt.

[0017] A dairy product packaging production system comprises the dairy product package sealing detection device as described above.

[0018] Preferably, the above-mentioned dairy product packaging production system also includes an upstream conveyor belt and a downstream conveyor belt, and the upstream conveyor belt and the downstream conveyor belt are respectively arranged on both sides of the belt checkweigher. The upstream conveyor belt is used to transfer the packages to be inspected into the belt checkweigher, and the downstream conveyor belt is used to transfer the packages that have been inspected by the belt checkweigher to the next process.

[0019] The technical solution adopted in this application can achieve the following beneficial effects:

[0020] The dairy package seal detection device disclosed in the present application includes a belt-type checkweigher (hereinafter referred to as the checkweigher), which has a conveyor belt; a lifting mechanism, which is located above the belt-type checkweigher and includes a compression cylinder and a compression rod, one end of the compression rod is connected to the compression cylinder, and the other end of the compression rod is connected to a pressure plate, which is parallel to the surface of the conveyor belt. The compression cylinder drives the compression rod to drive the pressure plate to perform up and down reciprocating motion; and a control system, to which the belt-type checkweigher and the compression cylinder are both electrically connected. When a dairy bag is transported via a conveyor to a belt checkweigher, the control system pauses the conveyor and activates the compression cylinder, which drives the compression rod downward to a predetermined stroke. The compression plate then applies a preset pressure to the bag and maintains this pressure for a specified period. If the weight fluctuation detected by the checkweigher does not exceed the set acceptable weight range, the bag is leak-free. If the bag leaks, the internal pressure will depressurize, and the pressure from the pressure plate will not be fully transmitted to the checkweigher. In this case, the weight fluctuation detected by the checkweigher will exceed the set acceptable weight range, thus detecting a leak. During the inspection process, the control system automatically controls the lifting and lowering of the lifting mechanism and the operation of the belt checkweigher. This eliminates the need for manual inspection of each bag, saving manpower. This improves efficiency, especially when inspecting large quantities of goods, and makes it suitable for continuous inspection on an assembly line.

[0021] The dairy product packaging production system of the present application applies a dairy product package sealing detection device to a dairy product packaging production line, and combines it with the production line to efficiently achieve all necessary inspections and effectively eliminate food safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the main view of the dairy package sealing detection device of this application.

[0023] Figure 2 This is the main view of the dairy package sealing detection device during detection.

[0024] Figure 3 This is a partial left view of the dairy package sealing detection device of this application (excluding the lifting mechanism).

[0025] In the figure: a belt checkweigher 100, a conveyor belt 110, a water retaining rib 111, a bag body sensing device 120, a lifting mechanism 200, a compression cylinder 210, a compression rod 220, a retaining ring 221, a pressure plate 230, a sealing buckle cover 300, a cleaning nozzle 310, a waste liquid recovery tank 400, a roller brush 410, an upstream conveyor belt 510, and a downstream conveyor belt 520. DETAILED DESCRIPTION

[0026] To facilitate understanding of the present application, a more comprehensive description of the present application will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0027] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," "top," "bottom," "bottom end," "top end," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] See Figures 1 to 3 In a specific embodiment of the present application, a dairy package sealing detection device includes: a belt-type checkweigher 100 (hereinafter referred to as the checkweigher), the belt-type checkweigher having a conveyor belt; a lifting mechanism 200, the lifting mechanism 200 is located above the belt-type checkweigher 100, and includes a compression cylinder 210 and a compression rod 220, one end of the compression rod 220 is connected to the compression cylinder 210, and the other end of the compression rod 220 is connected to a pressure plate 230, the pressure plate 230 is parallel to the surface of the conveyor belt 110, and the compression cylinder 210 drives the compression rod 220 to drive the pressure plate 230 to perform up and down reciprocating motion; a control system, the belt-type checkweigher 100 and the compression cylinder 210 are both electrically connected to the control system.

[0030] The belt checkweigher in this application is a prior art product, primarily comprising a conveyor belt 110 and a weight measuring device. When a package needs to be inspected, the package is placed on the checkweigher and transported to a predetermined location via the conveyor belt 110. The control system then pauses the conveyor belt 110 on the checkweigher and simultaneously activates the compression cylinder 210. The compression cylinder 210 drives the compression rod 220, which drives the pressure plate 230 downward, pressing down along a set stroke until it reaches the package, exerting a preset pressure on the package, i.e., the package weight. The actual weight detected by the checkweigher is the sum of the product weight and the set package weight. The set stroke (i.e., package weight) is maintained for a certain period, i.e., the inspection time. During this time, if the weight fluctuation detected by the checkweigher does not exceed the set acceptable weight fluctuation range, the package is considered leak-free. If the package is leaking, it will shrink due to the leak. Then, when the stroke of the compression rod 220 remains unchanged, the compressed weight of the package will not be fully transmitted to the checkweigher through the package. In other words, the weight detected by the checkweigher is less than the sum of the product weight and the compressed weight. The weight fluctuation will also exceed the set acceptable weight fluctuation range, indicating that the package is leaking or there is a risk of leakage. It should be noted that the preset pressure, detection time and weight fluctuation range can be set according to the actual product (for example, the preset pressure is 100-150kg, the detection time is 3-5s, and the weight fluctuation is within ±10g). If the package is leaking, it is transported to the next level conveyor for boxing and other operations; if the package is leaking, the leaking package can be removed from the checkweigher, and the conveyor 110 simultaneously transports the next package to be tested to the checkweigher for testing. During the inspection process, the control system automatically controls the rise and fall of the lifting mechanism 200 and the operation of the belt checkweigher 100. The dairy packages to be inspected are automatically transported by the conveyor belt 110 on the checkweigher. The entire process is continuous and uninterrupted, saving labor. Especially when the inspection volume is large, the inspection efficiency is high, and it is suitable for continuous inspection on the assembly line.

[0031] As previously mentioned, when a package is transported to the checkweigher, the control system controls the compression cylinder 210 to operate, and the compression rod 220 drives the pressure plate 230 downward. At this point, it is necessary to determine whether the package has been transported to the predetermined position of the checkweigher. In this application, the predetermined position refers to the area where the pressure plate 230 corresponds to the checkweigher, thereby activating the compression cylinder 210. Therefore, the gravity detection mechanism is also provided with a package sensing device 120, which is electrically connected to the control system. The package sensing device 120 can be selected according to the actual situation. In this application, an electronic eye is preferably provided. The electronic eye can be set at the edge of the checkweigher. When the package is transported to the electronic eye position on the checkweigher's conveyor belt 110, the electronic eye detects the package and sends a signal to the control system. The control system controls the compression cylinder 210 to start, and at the same time controls the conveyor belt 110 to pause transmission. The compression rod 220 drives the pressure plate 230 downward to detect the package. In this way, whether to start the compression cylinder 210 can be accurately determined based on the real-time position of the package on the conveyor belt 110, thereby achieving accurate linkage of various components in the package detection device and improving detection efficiency.

[0032] During the dairy packaging process, if the two ends of the package are not firmly sealed, the package may rupture under the action of the pressure of the package, and the liquid may splash out. In order to prevent the liquid from splashing everywhere, the above-mentioned dairy package sealing detection device also includes a sealing buckle cover 300. The sealing buckle cover 300 is slidably connected to the compression rod 220 and the pressure plate 230 is located inside the sealing buckle cover 300. The sealing buckle cover 300 opens toward the belt-type checkweigher 100. When the compression rod 220 is compressed downward, the sealing buckle cover 300 is simultaneously downward until the sealing buckle cover 300 is buckled on the surface of the belt-type checkweigher 100, thus forming a closed cavity, accommodating the pressure plate 230 and the package in this cavity. If the package ruptures, the liquid will not splash everywhere. At the same time, in order to facilitate the observation of the package inside the sealing buckle cover 300, the sealing buckle cover 300 is preferably made of a transparent material, such as transparent plastic, transparent acrylic, etc.

[0033] When the sealing cover 300 reaches the checkweigher surface, it stops moving downward. However, the compression rod 220 and pressure plate 230 continue to move downward until they reach a predetermined distance. Therefore, a retaining ring 221 is fixed to the compression rod 220, located between the sealing cover 300 and the pressure plate 230. As the sealing cover 300 is pressed down onto the checkweigher surface by the compression rod 220, it latches onto the checkweigher (the actual weight measured by the checkweigher is the sum of the product weight, the sealing cover weight, and the set compressed bag weight). The compression rod 220 continues to descend until it reaches a predetermined distance. When a bag is inspected, the compression rod 220 ascends until the retaining ring 221 contacts the sealing cover 300. The sealing cover 300 then ascends along with the compression rod 220, lifting the sealing cover 300 and facilitating transport of the bag to be inspected to the checkweigher working surface for inspection.

[0034] When the milk bag is crushed and liquid splashes out, it may contaminate the inner wall of the sealing buckle cover 300 and the checkweigher conveyor belt 110. Therefore, a number of cleaning nozzles 310 are also provided on the sealing buckle cover 300, and the water spraying direction of the cleaning nozzles 310 is toward the inside of the sealing buckle cover 300. The cleaning nozzles 310 are externally connected to a cleaning water pipe, and a control valve is installed on the cleaning water pipe. The control valve and the control system are electrically connected. When it is necessary to clean the inside of the sealing buckle cover 300 and the conveyor belt 110, the control valve is opened and the cleaning nozzles 310 spray water. The number and position of the cleaning nozzles 310 can be selected according to actual conditions. In order to avoid the cleaning waste liquid from remaining on the conveyor belt 110, in a preferred embodiment, the above-mentioned dairy bag sealing detection device also includes a waste liquid recovery tank 400, and the waste liquid recovery tank 400 is arranged at the end of the conveying direction of the conveyor belt 110 and is lower than the conveyor belt 110. When cleaning is completed, the conveyor belt 110 continues to move forward, and the waste liquid is also transported to the end of the conveyor belt 110 along with the conveyor belt 110, and then flows into the waste liquid recovery tank 400 to prevent the waste liquid from polluting the production environment.

[0035] At the same time, although the waste liquid that has cleaned the conveyor belt 110 flows into the waste liquid recovery tank 400, the surface of the conveyor belt 110 is still wet. In order to avoid contaminating the package to be inspected next, a roller brush 410 is provided at the top of one side of the waste liquid recovery tank 400. The roller brush 410 is used to clean the surface of the conveyor belt 110. The roller brush 410 is usually made of a water-absorbent material, such as cotton cloth, sponge, etc. As the conveyor belt 110 is driven, the surface of the roller brush 410 contacts the surface of the conveyor belt 110 and rotates accordingly, which can wipe the surface of the conveyor belt 110, dry the moisture on its surface, and keep the conveyor belt 110 dry and clean. Furthermore, the edge of the conveyor belt 110 is provided with a water retaining rib 111, and the water retaining rib 111 is higher than the surface of the conveyor belt 110. The water retaining rib 111 can prevent the waste liquid from flowing around from the surface of the conveyor belt 110.

[0036] In a preferred embodiment of the present application, a dairy product packaging production system includes the dairy product package sealing detection device as described above.

[0037] In another preferred embodiment of the present application, the above-mentioned dairy packaging production system further includes an upstream conveyor belt 510 and a downstream conveyor belt 520, wherein the upstream conveyor belt 510 and the downstream conveyor belt 520 are respectively arranged on both sides of the belt checkweigher, the upstream conveyor belt 510 transfers the package to the belt checkweigher 100, and the downstream conveyor belt 520 transfers the package that has been inspected by the belt checkweigher 100 to the next process. In order to combine the dairy package sealing detection device of the present application with the production line, the upstream conveyor belt 510 can be a packaging conveyor belt, which is used to transfer the packaged package to the belt checkweigher 100, and the downstream conveyor belt 520 can be a boxing conveyor belt, which is used to transfer the inspected package to the boxing process through the downstream conveyor belt 520, so as to achieve seamless connection with the production line.

[0038] In another preferred embodiment of the present application, the control system further includes an alarm and an emergency stop button. If there is a leak in the bag, the checkweigher sends a signal to the control system, and the control system controls the alarm to sound an alarm. At this time, the worker removes the leaked bag from the conveyor belt 110. When the bag is damaged and the milk or other beverages in the bag leak, the emergency stop button can be turned on to suspend the inspection operation. At the same time, the control valve on the cleaning water pipe is turned on to clean the inside of the sealing buckle cover 300 and the conveyor belt 110 through the cleaning nozzle 310 to avoid food safety problems caused by leaked beverages. When multiple bags or foreign objects enter the conveyor belt 110 and cannot be taken out manually and affect the performance of the equipment, press the emergency stop button to stop the equipment urgently and take out the bag to avoid unexpected situations affecting the normal operation of the equipment.

[0039] The above embodiments merely illustrate several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A dairy package sealing detection device, characterized in that: include: A belt-type checkweigher having a conveyor belt; A lifting mechanism, the lifting mechanism is located above the belt checkweigher, and includes a compression cylinder and a compression rod, one end of the compression rod is connected to the compression cylinder, and the other end of the compression rod is connected to a pressure plate, the pressure plate is parallel to the surface of the conveyor belt, and the compression cylinder drives the compression rod to drive the pressure plate to perform up and down reciprocating motion; The control system is electrically connected to the belt checkweigher and the compression cylinder.

2. The dairy package sealing detection device according to claim 1, characterized in that: The belt checkweigher is further provided with a bag body sensing device, and the bag body sensing device is electrically connected to the control system.

3. The dairy package sealing detection device according to claim 1, characterized in that: A sealing buckle cover is slidably provided on the compression rod, and the pressure plate is located inside the sealing buckle cover, and the opening of the sealing buckle cover faces the belt-type checkweigher.

4. The dairy package sealing detection device according to claim 3, characterized in that: A retaining ring is fixedly provided on the compression rod, and the retaining ring is located between the sealing buckle cover and the pressure plate.

5. The dairy package sealing detection device according to claim 3, characterized in that: The sealing buckle cover is also provided with a plurality of cleaning nozzles, and the water spraying direction of the cleaning nozzles is toward the inside of the sealing buckle cover.

6. The dairy package sealing detection device according to claim 1, characterized in that: It also includes a waste liquid recovery tank, which is arranged at the end of the conveying direction of the conveyor belt and is lower than the conveyor belt.

7. The dairy package sealing detection device according to claim 6, characterized in that: A roller brush is provided at the top end of one side of the waste liquid recovery tank, and the roller brush is used to clean the surface of the conveyor belt.

8. The dairy package sealing detection device according to claim 1, characterized in that: Along the conveying direction of the conveyor belt, the edge of the conveyor belt is provided with water retaining ribs, and the water retaining ribs are higher than the surface of the conveyor belt.

9. A dairy product packaging production system, characterized in that: The invention comprises a dairy package sealing detection device as claimed in any one of claims 1 to 8.

10. The dairy product packaging production system according to claim 9, characterized in that: It also includes an upstream conveyor belt and a downstream conveyor belt, which are respectively arranged on both sides of the belt checkweigher. The upstream conveyor belt is used to transfer the packages to be inspected into the belt checkweigher, and the downstream conveyor belt is used to transfer the packages that have been inspected by the belt checkweigher to the next process.

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