Vacuum cup leak detection equipment suitable for multi-station production line

Abstract

The utility model discloses a vacuum cup leak hunting device suitable for a multi-station production line, which comprises a rack, a detection module is arranged on the top of the rack, the detection module comprises a base, a mounting plate, a first sealing unit and a positioning unit, the base is also provided with a negative pressure channel, and the inner wall of the positioning unit forms a positioning part. When the vacuum cup is installed in the positioning part, the outer wall of the vacuum cup abuts against the positioning part, the negative pressure channel is communicated with an inner cavity of the vacuum cup, and a cup opening of the vacuum cup abuts against the first sealing unit in a sealed mode. The input end of the vacuum assembly is connected with an external air source, and the output end of the vacuum assembly is communicated with the negative pressure channel. According to the utility model, a plurality of detection modules are provided, so that the leak detection equipment is adaptive to a multi-station production line; and the detection module comprises a positioning unit and a first sealing unit, so that the vacuum cup is automatically adsorbed on the first sealing unit through negative pressure in the retesting process, the action flow during testing is simplified, and the detection rate is improved.

Description

Technical Field

[0001] This utility model belongs to the field of thermos cup production, specifically relating to a leak detection device for thermos cups suitable for multi-station production lines. Background Technology

[0002] Insulated water bottles, as common insulated containers in daily life, are often used to keep liquids warm and are popular because they are convenient for people to carry hot or cold drinks when going out. The heat preservation effect of an insulated water bottle is usually related to its airtightness. To ensure the quality of insulated water bottles, the airtightness is usually tested during the manufacturing process.

[0003] In existing technologies, such as patent document CN210487201U, a sealing detection device for thermos cup production is disclosed. This device uses an adjustable chamber to drive the lower mold to reciprocate, allowing workers to load materials as the lower mold extends. This improves both safety and ease of loading for employees. However, for multi-station thermos cup production lines, reciprocating loading would prolong detection time, reduce detection efficiency, and cause the detection speed to lag behind the production line speed. Summary of the Invention

[0004] To address the problems in existing technologies, this utility model proposes a leak detection device for insulated cups suitable for multi-station production lines. The device includes multiple detection modules, enabling it to adapt to multiple stations on the production line and improving detection efficiency. Each detection module includes a positioning unit and a first sealing unit. The positioning unit quickly positions the insulated cup while simultaneously bringing it into contact with the first sealing unit. During testing, negative pressure automatically causes the insulated cup to adhere to the first sealing unit, simplifying the testing process and further improving the detection rate.

[0005] This invention is implemented as follows: A leak detection device for thermos cups suitable for multi-station production lines is installed at the end of a multi-station automated production line for thermos cup inner liners. The transfer robots of the production line are located on both sides of the leak detection device. The leak detection device includes a frame, and the top of the frame is equipped with a detection module corresponding to the transfer robot. When the transfer robots of the production line are located on both sides of the leak detection device, interference between the transfer robots can be avoided, preventing the transfer robots from avoiding each other and stopping their actions. This improves the transfer efficiency of the transfer robots, thereby increasing the loading and unloading rate of thermos cups, which in turn increases the detection rate of thermos cups.

[0006] The detection module includes a base, a first sealing unit, and a positioning unit arranged sequentially from bottom to top. The base also has a negative pressure channel. The positioning unit is annular, with its inner wall forming a positioning part. When the thermos cup is installed in the positioning part, the outer wall of the thermos cup abuts against the positioning part. The negative pressure channel communicates with the inner cavity of the thermos cup, and the mouth of the thermos cup is pressed and sealed against the first sealing unit. The positioning unit is used for rapid positioning of the thermos cup, allowing the feeding and positioning of the thermos cup to be performed simultaneously, thus improving the detection efficiency of the detection module. The first sealing unit is used for sealing the thermos cup during detection. When the negative pressure channel evacuates the thermos cup for detection, atmospheric pressure presses the thermos cup against the first sealing unit to achieve a seal, allowing the sealing and detection of the thermos cup to be performed simultaneously, further improving the detection efficiency.

[0007] A mounting plate is also provided below the first sealing unit. The bottom of the mounting plate has a downwardly protruding positioning boss. The base has a positioning groove that matches the positioning boss. The positioning boss is embedded in the positioning groove, and there is a gap between the bottom surface of the positioning boss and the bottom surface of the positioning groove. The mounting plate supports the first sealing unit to prevent excessive deformation under the pressure of the thermos cup, which could lead to air leakage, thus improving the reliability of the first sealing unit. The positioning groove and positioning boss are used for quick positioning of the mounting plate, improving the ease of installation. The gap prevents the bottom surface of the positioning boss from abutting against the bottom surface of the positioning groove, thus preventing dimensional errors in the positioning boss and positioning groove from causing the mounting plate and the base to not fit together, improving the installation accuracy and sealing performance of the mounting plate.

[0008] It also includes a vacuum assembly housed within the frame, with its input end connected to an external air source and its output end connected to the negative pressure channel. The vacuum assembly is used to evacuate air from the inner cavity of the thermos, creating negative pressure within the thermos to test its seal.

[0009] Preferably, the bottom periphery of the positioning unit is provided with a limiting portion extending downward to the periphery of the mounting plate. The limiting portion is annular, so that the top of the first sealing unit and the mounting plate are embedded within the limiting portion. The limiting portion is used to limit the first sealing unit, preventing displacement of the first sealing unit from causing sealing failure and improving the reliability of the first sealing unit.

[0010] Preferably, the positioning boss is provided with a sleeved second sealing unit on its periphery, and the mounting plate presses the second sealing unit against the base. The second sealing unit is used to improve the sealing between the mounting plate and the base, prevent gaps between the mounting plate and the base from causing air leakage in the negative pressure channel, and improve the reliability of the negative pressure channel.

[0011] Specifically, the detection module further includes a connecting unit adapted to the negative pressure channel. The connecting unit is hollow, forming an air passage. The lower end of the connecting unit passes through the first sealing unit, the mounting plate, and the second sealing unit from top to bottom, and then screws onto the base. Simultaneously, the head of the connecting unit abuts against the first sealing unit, and the air passage connects to the negative pressure channel, forming an extraction channel. This air passage reduces the connection surfaces formed by the connection of components within the extraction channel, thus lowering the risk of air leakage.

[0012] Preferably, the top of the positioning part gradually slopes inward from top to bottom, forming a funnel-shaped guide surface. This guide surface guides the thermos cup during positioning, making it easier for the cup to enter the positioning part, thus improving the positioning efficiency and reliability of the positioning part.

[0013] Preferably, the interior of the frame is formed as an electrical cavity, the vacuum assembly is disposed within the electrical cavity, and the electrical cavity includes a protective door hinged to the frame, the protective door being equipped with a lock. The lock is used to prevent unauthorized personnel from opening the electrical cavity, thereby improving the security of the electrical cavity.

[0014] Specifically, the vacuum assembly includes a gas path structure corresponding to the detection module. This gas path structure includes a vacuum generator. The vacuum generator has a first solenoid valve at its input end and a second solenoid valve at its vacuum end. The output end of the second solenoid valve has a negative pressure gauge connected to the negative pressure channel. The first solenoid valve controls the on / off state of the gas path structure, ensuring it is open only when testing the thermos, thus reducing noise. The second solenoid valve maintains pressure in the thermos after vacuuming. The negative pressure gauge detects the negative pressure value inside the thermos after pressure maintenance, quantifying the negative pressure data to determine if there is a leak, thus improving the reliability of the detection.

[0015] Specifically, the electrical cavity also includes a distribution panel, which is vertically positioned above the vacuum assembly. Since the vacuum assembly may release moisture during use, placing the distribution panel above it prevents leakage caused by this moisture, achieving electrical separation and improving the safety of the electrical cavity.

[0016] Preferably, the bottom of the frame is also provided with multiple feet, which are screwed to the bottom of the frame so that the height of the feet is adjustable. The feet can adjust the level of the frame to avoid the frame tilting due to uneven ground, which would prevent the thermos cups from being loaded and unloaded, thus improving the reliability of the frame.

[0017] Preferably, the first sealing unit is made of polyurethane. Polyurethane has good wear resistance and tear resistance, which can effectively extend the service life of the first sealing unit.

[0018] The beneficial effects of this utility model are:

[0019] This utility model proposes a leak detection device for thermos cups suitable for multi-station production lines, including multiple detection modules, which enables the leak detection device to adapt to multiple stations on the production line, improving detection efficiency. The detection module includes a positioning unit and a first sealing unit. The positioning unit enables the thermos cup to be quickly positioned and simultaneously makes the thermos cup come into contact with the first sealing unit. During the test, negative pressure is used to automatically adsorb the thermos cup onto the first sealing unit, simplifying the action process during testing and further improving the detection rate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall leak detection device of this utility model;

[0021] Figure 2 This is a front view of the leak detection device of this utility model;

[0022] Figure 3 This is a cross-sectional view of the leak detection device of this utility model;

[0023] Figure 4 This is a schematic diagram of the detection module and the thermos cup of the leak detection device of this utility model;

[0024] Figure 5 for Figure 4 An enlarged schematic diagram of point a;

[0025] Figure 6 This is a schematic diagram of the vacuum component of the leak detection device of this utility model;

[0026] Figure 7 This is a schematic diagram of the air circuit connection of the vacuum component of the leak detection device of this utility model;

[0027] Figure 8 This is a schematic diagram of the leak detection device of this utility model installed on the production line.

[0028] Figure label:

[0029] C1, Leak detection equipment; Z1, Transfer robot;

[0030] 1. Frame; 2. Detection module; 3. Thermos cup; 4. Foot cup; 11. Electrical cavity; 21. Base; 22. First sealing unit; 23. Positioning unit; 24. Mounting plate; 25. Second sealing unit; 26. Connection unit; 111. Protective door; 112. Door lock; 113. Vacuum assembly; 114. Distribution panel; 211. Negative pressure channel; 212. Positioning groove; 231. Limiting part; 232. Guide surface; 241. Positioning boss; 261. Air passage; 1131. First solenoid valve; 1132. Vacuum generator; 1133. Second solenoid valve; 1134. Negative pressure gauge. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] like Figures 1-6 As shown, a leak detection device for thermos cups suitable for multi-station production lines is installed at the end of a multi-station automated production line for thermos cup inner liners. The transfer robots of the production line are located on both sides of the leak detection device. The leak detection device includes a frame 1, and a detection module 2 corresponding to the transfer robot is provided on the top of the frame 1. When the transfer robots of the production line are located on both sides of the leak detection device, interference between the transfer robots can be avoided, and the transfer robots can avoid each other and stop moving, thereby improving the transfer efficiency of the transfer robots and thus improving the loading and unloading rate of thermos cups 3, that is, improving the detection rate of thermos cups 3.

[0033] In this embodiment, the bottom of the frame 1 is also provided with a plurality of foot cups 4. The foot cups 4 are screwed to the bottom of the frame 1, so that the height of the foot cups 4 is adjustable. The level of the frame 1 can be adjusted by the foot cups 4, so as to avoid the frame 1 tilting due to uneven ground, which would prevent the thermos cups 3 from being loaded and unloaded, thus improving the reliability of the frame 1.

[0034] The detection module 2 includes a base 21, a first sealing unit 22, and a positioning unit 23 arranged sequentially from bottom to top. The base 21 is also provided with a negative pressure channel 211. The positioning unit 23 is annular, with its inner wall forming a positioning part. When the thermos cup 3 is installed in the positioning part, the outer wall of the thermos cup 3 abuts against the positioning part. The negative pressure channel 211 communicates with the inner cavity of the thermos cup 3, and the mouth of the thermos cup 3 is pressed and sealed against the first sealing unit 22. The positioning unit 23 is used to quickly position the thermos cup 3, so that the feeding and positioning of the thermos cup 3 can be carried out simultaneously, improving the detection efficiency of the detection module 2. The first sealing unit 22 is used to seal the thermos cup 3 during detection. When the negative pressure channel 211 evacuates the thermos cup 3 for detection, atmospheric pressure presses the thermos cup 3 against the first sealing unit 22 to achieve sealing, so that the sealing and detection of the thermos cup 3 can be carried out simultaneously, further improving the detection efficiency.

[0035] In this embodiment, the first sealing unit 22 is made of polyurethane. Polyurethane has good wear resistance and tear resistance, which can effectively extend the service life of the first sealing unit 22.

[0036] Below the first sealing unit 22, there is also a mounting plate 24. The bottom of the mounting plate 24 has a downwardly protruding positioning boss 241. The base 21 has a positioning groove 212 that matches the positioning boss 241. The positioning boss 241 is embedded in the positioning groove 212, and there is a gap between the bottom surface of the positioning boss 241 and the bottom surface of the positioning groove 212. The mounting plate 24 is used to support the first sealing unit 22, preventing excessive deformation under the pressure of the thermos cup 3, which would lead to air leakage, thus improving the reliability of the first sealing unit 22. The positioning groove 212 and the positioning boss 241 are used to quickly position the mounting plate 24, improving the installation convenience of the mounting plate 24. The gap is used to prevent the bottom surface of the positioning boss 241 from abutting against the bottom surface of the positioning groove 212, thereby preventing dimensional errors of the positioning boss 241 and the positioning groove 212 from causing the mounting plate 24 to fail to fit with the base 21, thus improving the installation accuracy and sealing performance of the mounting plate 24.

[0037] In this embodiment, the bottom periphery of the positioning unit 23 is provided with a limiting portion 231 extending downward to the periphery of the mounting plate 24. The limiting portion 231 is annular, so that the tops of the first sealing unit 22 and the mounting plate 24 are embedded in the limiting portion 231. The limiting portion 231 is used to limit the first sealing unit 22, preventing displacement of the first sealing unit 22 and thus preventing sealing failure, thereby improving the reliability of the first sealing unit 22.

[0038] In this embodiment, a second sealing unit 25 is provided around the circumference of the positioning boss 241, and the mounting plate 24 presses the second sealing unit 25 against the base 21. The second sealing unit 25 is used to improve the sealing between the mounting plate 24 and the base 21, prevent gaps between the mounting plate 24 and the base 21 from causing air leakage in the negative pressure channel 211, and improve the reliability of the negative pressure channel 211.

[0039] Specifically, the detection module 2 further includes a connection unit 26 adapted to the negative pressure channel 211. The connection unit 26 is hollow inside, forming an air passage 261. The lower end of the connection unit 26 passes through the first sealing unit 22, the mounting plate 24, and the second sealing unit 25 from top to bottom and is screwed onto the base 21. Simultaneously, the head of the connection unit 26 abuts against the first sealing unit 22, and the air passage 261 connects to the negative pressure channel 211, forming an air extraction channel. The air passage 261 reduces the connection surface formed by the connection of components within the air extraction channel, thus reducing the risk of air leakage.

[0040] In this embodiment, the top of the positioning part gradually slopes inward from top to bottom, forming a funnel-shaped guide surface 232. The guide surface 232 is used to guide the thermos cup 3 during positioning, making it easier for the thermos cup 3 to enter the positioning part, thereby improving the positioning efficiency of the thermos cup 3 and the reliability of the positioning part.

[0041] It also includes a vacuum assembly 113 disposed within the frame 1. The input end of the vacuum assembly 113 is connected to an external air source, and the output end is connected to the negative pressure channel 211. The vacuum assembly 113 is used to evacuate air from the inner cavity of the thermos cup 3, generating negative pressure in the inner cavity of the thermos cup 3 to detect the sealing performance of the thermos cup 3.

[0042] In this embodiment, the interior of the frame 1 is formed as an electrical cavity 11, and the vacuum assembly 113 is disposed within the electrical cavity 11. The electrical cavity 11 includes a protective door 111 hinged to the frame 1, and the protective door 111 is provided with a door lock 112. The door lock 112 is used to prevent unauthorized personnel from opening the electrical cavity 11, thereby improving the security of the electrical cavity 11.

[0043] Specifically, the vacuum assembly 113 includes a gas path structure corresponding to the detection module 2. The gas path structure includes a vacuum generator 1132. The vacuum generator 1132 has a first solenoid valve 1131 at its input end and a second solenoid valve 1133 at its vacuum end. The output end of the second solenoid valve 1133 has a negative pressure gauge 1134, which is connected to the negative pressure channel 211. The first solenoid valve 1131 controls the opening and closing of the gas path structure, ensuring it is open only when testing the thermos cup 3, thus reducing noise generated by the gas path structure. The second solenoid valve 1133 maintains pressure in the thermos cup 3 after evacuation. The negative pressure gauge 1134 detects the negative pressure value inside the thermos cup 3 after pressure maintenance, quantifying the negative pressure value to determine if there is any leakage in the insulation, thus improving the reliability of the detection.

[0044] Specifically, the electrical cavity 11 is further provided with a distribution panel 114, which is arranged vertically and above the vacuum assembly 113. Since the vacuum assembly 113 may release moisture during use, placing the distribution panel 114 above the vacuum assembly 113 can prevent the moisture released from the vacuum assembly 113 from causing leakage in the distribution panel 114, thus achieving electrical separation and improving the safety of the electrical cavity 11.

[0045] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A leak testing device for thermos cups suitable for multi-station production lines, located at the tail end of a multi-station automated production line for thermos cup inner liners, wherein the transfer robot of the production line is located on both sides of the leak testing device, and the leak testing device includes a frame, characterized in that: The top of the frame is equipped with a detection module corresponding to the transfer robot. The detection module includes a base, a first sealing unit, and a positioning unit arranged sequentially from bottom to top. The base is also provided with a negative pressure channel. The positioning unit is annular, so that the inner wall forms a positioning part. When the thermos cup is installed in the positioning part, the outer wall of the thermos cup abuts against the positioning part. The negative pressure channel communicates with the inner cavity of the thermos cup, and the mouth of the thermos cup is pressed and sealed against the first sealing unit. Below the first sealing unit, there is also a mounting plate. The bottom of the mounting plate is provided with a downwardly protruding positioning boss. The base is provided with a positioning groove that matches the positioning boss. The positioning boss is embedded in the positioning groove, and there is a gap between the bottom surface of the positioning boss and the bottom surface of the positioning groove. It also includes a vacuum assembly located within the frame, the input end of which is connected to an external air source, and the output end of which is connected to the negative pressure channel.

2. The leak detection device for insulated cups suitable for multi-station production lines according to claim 1, characterized in that: The bottom of the positioning unit is provided with a limiting part that extends downward to the periphery of the mounting plate. The limiting part is annular, so that the top of the first sealing unit and the mounting plate are embedded in the limiting part.

3. The leak detection device for insulated cups suitable for multi-station production lines according to claim 1, characterized in that: The positioning boss is provided with a second sealing unit on its periphery, and the mounting plate presses the second sealing unit against the base.

4. A leak detection device for insulated cups suitable for multi-station production lines according to claim 3, characterized in that: The detection module also includes a connection unit adapted to the negative pressure channel. The connection unit is hollow inside to form an air passage. The lower end of the connection unit passes through the first sealing unit, the mounting plate and the second sealing unit from top to bottom and is screwed to the base. At the same time, the head of the connection unit abuts against the first sealing unit, and the air passage is connected to the negative pressure channel to form an air extraction channel.

5. A leak detection device for insulated cups suitable for multi-station production lines according to claim 1, characterized in that: The top of the positioning part gradually slopes inward from top to bottom, forming a funnel-shaped guide surface.

6. A leak detection device for insulated cups suitable for multi-station production lines according to claim 1, characterized in that: The frame is internally formed into an electrical cavity, and the vacuum assembly is located within the electrical cavity. The electrical cavity includes a protective door hinged to the frame, and the protective door is equipped with a door lock.

7. A leak detection device for insulated cups suitable for multi-station production lines according to claim 6, characterized in that: The vacuum assembly includes a gas path structure corresponding to the detection module. The gas path structure includes a vacuum generator. The input end of the vacuum generator is provided with a first solenoid valve, and the vacuum end is provided with a second solenoid valve. The output end of the second solenoid valve is provided with a negative pressure gauge, and the negative pressure gauge is connected to the negative pressure channel.

8. A leak detection device for insulated cups suitable for multi-station production lines according to claim 6, characterized in that: The electrical cavity is also equipped with a power distribution panel, which is arranged vertically and located above the vacuum assembly.

9. A leak detection device for insulated cups suitable for multi-station production lines according to claim 1, characterized in that: The bottom of the frame is also provided with multiple feet, which are screwed to the bottom of the frame so that the height of the feet is adjustable.

10. A leak detection device for insulated cups suitable for multi-station production lines according to claim 1, characterized in that: The first sealing unit is made of polyurethane.

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