A plastic cup seal detection system

Abstract

The present invention relates to the technical field of seal detection, and in particular to a plastic cup mouth seal detection system, comprising a shell, a side baffle component arranged in the shell and a negative pressure generator arranged on the shell, the side baffle components respectively cooperating with the cup bottom and the cup mouth of the plastic cup to be inspected, and a feeding gap is provided between adjacent side baffle components. When in use, the flexible positioning of the inverted plastic cup to be inspected can be achieved through a supporting mechanism, so as to gradually enhance the negative pressure strength until it meets the standard, thereby changing the suction strength of the plastic cup to be inspected, thereby performing a creep leakage test on the plastic cup to be inspected, and at the same time, the driving mechanism cooperates with the transmission mechanism to drive the rotating shaft to rotate and rise, so that after the feeding gap is opened, the plastic cup to be inspected is placed in a receiving box, so as to simulate the mutual squeezing or falling state of the plastic cup to be inspected during actual adaptation, so as to perform an instantaneous impact leakage test on the plastic cup to be inspected that has left the feeding gap, and ultimately ensure the authenticity and accuracy of the detection result.

Description

Technical Field

[0001] The present invention relates to the technical field of sealing detection, and in particular to a plastic cup opening sealing detection system. Background Art

[0002] Plastic cups are often used for packaging in the food and beverage industries. To avoid leakage or contamination due to poor sealing or insufficient sealing strength after the plastic cups are sealed, it is necessary to conduct random inspections on the sealing of batches of plastic cups. The existing inspection method is usually to place the sealed plastic cups in a sealed shell with applied air pressure, and use a sensor to sense the change in air pressure to determine whether the sealed cup body is leaking.

[0003] For example, the Chinese patent application number CN202010984024.0 discloses a water collection cup leakage detection device, which includes a housing, a fixing device, a detection device, a control component, an air pressure pump, a drive device and a battery component. A rotating waist component is provided between the side block component and the forklift, and an air pressure pump is used to provide air pressure for the air duct on the control panel. The sensor on the control panel detects the air pressure in the air duct, and determines whether the water collection cup is leaking by the change in air pressure. However, the way it changes the air pressure is only equivalent to applying a static load on the static sealing cup body. When the plastic cup mouth is in actual use, the product often squeezes each other or falls, causing the gas inside the cup body to impact the sealing edge. The use of this detection device cannot accurately simulate the instantaneous impact sealing detection of the sealing cup body under actual use. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to propose a plastic cup mouth seal detection system to solve the problem that the existing technology is only equivalent to applying a static load on the static sealed cup body, and when the plastic cup mouth is in actual use, the products often squeeze each other or fall, causing the gas inside the cup body to impact the sealing edge. The use of this detection device cannot accurately simulate the technical problem of instantaneous impact sealing detection of the sealed cup body under actual use.

[0005] Based on the above objectives, the present invention provides a plastic cup opening seal detection system, comprising a housing having a sealed cavity and a negative pressure generator for generating negative pressure in the sealed cavity, the detection system further comprising:

[0006] Rotating a rotating table located at the bottom of the sealed chamber;

[0007] At least one supporting mechanism provided on the upper end surface of the rotating table, the supporting mechanism including side blocking members arranged opposite to each other and forming a feeding gap, the feeding gap having at least one placement position for placing an inverted plastic cup to be inspected, the central axis of the plastic cup to be inspected at the placement position being staggered with the central axis of the rotating table;

[0008] A transmission mechanism for driving the side blocking components in the supporting mechanism to move toward or away from each other;

[0009] a clamping mechanism located at the placement position, the clamping mechanism being used to clamp the plastic cup to be inspected at the placement position after the side blocking member in the supporting mechanism moves to one of the positions;

[0010] A driving mechanism for driving the turntable to rotate.

[0011] Furthermore, the side blocking component is of a plug-in structure, and the side blocking component has arc-shaped protruding sections on both sides of the material passing gap, and the arc-shaped protruding sections match the side walls of the plastic cup to be inspected.

[0012] Furthermore, the transmission mechanism includes:

[0013] A rotating shaft slidably arranged on the rotating table;

[0014] A support base is provided at the bottom of the housing, a sleeve is provided on the upper portion of the support base, and the rotating shaft is rotatably provided in the sleeve;

[0015] A spherical transmission member with a back fixedly connected to the rotating shaft;

[0016] a spring 1 sleeved on the rotating shaft, wherein one end of the spring 1 abuts against the inner wall of the sleeve head, and the other end of the spring 1 abuts against the back of the spherical transmission member;

[0017] A driving motor is arranged in the housing, and a transmission roller is installed at the output end of the driving motor. The outer edge of the transmission roller abuts against the lower spherical end of the spherical transmission member.

[0018] Furthermore, the clamping mechanism includes:

[0019] A mounting frame provided at the upper end of the rotating table;

[0020] A guide rod fixedly arranged in the mounting frame;

[0021] a sliding plate extending transversely through the mounting frame, the sliding plate being further slidably mounted on the guide rod, the side blocking member being mounted on the sliding plate;

[0022] A second spring is sleeved on the guide rod, one end of the second spring abuts against the inner wall of the mounting frame, and the other end of the second spring abuts against the sliding plate.

[0023] Furthermore, the driving mechanism includes:

[0024] A push-pull rod coaxially rotates on the upper end of the rotating shaft, wherein the upper end of the push-pull rod longitudinally passes through the mounting frame;

[0025] The connecting rods are hinged to both sides of the upper end of the push-pull rod, and the other ends of the connecting rods are hinged to the sliding plate.

[0026] Furthermore, a cylinder is provided at the bottom of the shell, a rack is installed at the output end of the cylinder, a flip seat is installed on the support seat through a transmission shaft, the drive motor is installed on the flip seat, a gear is installed on the transmission shaft, and the gear is meshed with the rack.

[0027] Furthermore, an openable and closable sealing cover is provided on the top of the shell.

[0028] Furthermore, receiving boxes are provided on both sides of the sliding plate, and the bottom of the receiving boxes is placed horizontally below the mouth of the plastic cup to be inspected.

[0029] Furthermore, a storage frame is provided in the receiving box, and a receiving groove is provided on the rotating table below the two inverted plastic cups to be tested, and color developing test papers are placed in the receiving groove and the storage frame.

[0030] Furthermore, the upper end surface of the rotating table is configured as a downwardly extending arc surface, so that when leakage occurs at the mouth of the plastic cup to be inspected, the falling internal liquid flows to the surroundings of the rotating table.

[0031] The beneficial effects of the present invention are as follows: the supporting mechanism can realize flexible positioning of the inverted plastic cup to be inspected, so as to gradually increase the negative pressure strength until it reaches the standard, thereby changing the suction strength of the plastic cup to be inspected, thereby performing a creep leakage test on the plastic cup to be inspected; at the same time, the driving mechanism cooperates with the transmission mechanism to drive the rotating shaft to rotate and rise, so that after the feeding gap is opened, the plastic cup to be inspected is placed in the receiving box, thereby simulating the mutual squeezing or falling state of the plastic cup to be inspected during actual adaptation, so as to perform an instantaneous impact leakage test on the plastic cup to be inspected that has left the feeding gap, and ultimately ensure the authenticity and accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 Schematic diagram of the internal structure of the present invention;

[0034] Figure 2 Schematic diagram of the external structure of the present invention;

[0035] Figure 3 Schematic diagram of the assembly of the rotating shaft and the driving mechanism of the present invention;

[0036] Figure 4 This is a schematic diagram of the assembly of the rotating shaft and the driving mechanism of the present invention from another perspective;

[0037] Figure 5 Schematic diagram of the assembly of the supporting mechanism and the transmission mechanism in the present invention;

[0038] Figure 6 This is a schematic diagram of the installation state of the plastic cup to be inspected in the inspection system of the present invention;

[0039] Figure 7 This is a schematic diagram of the installation state of the plastic cup to be inspected on the side guard component in the present invention;

[0040] Figure 8 This is a schematic diagram of the state in which the plastic cup to be inspected collides with the receiving box in the present invention.

[0041] The following are marked in the figure:

[0042] 1. Outer casing; 2. Side baffle; 3. Negative pressure generator; 4. Plastic cup to be inspected; 5. Rotating table; 6. Receiver trough; 7. Rotating shaft; 8. Mounting frame; 9. Receiver box; 10. Support seat; 11. Sleeve; 12. Spherical transmission member; 13. Spring 1; 14. Drive motor; 15. Drive roller; 16. Guide rod; 17. Slide plate; 18. Spring 2; 19. Push-pull rod; 20. Connecting rod; 21. Cylinder; 22. Rack; 23. Drive shaft; 24. Turning seat; 25. Gear; 26. Sealing cover; 27. Storage frame. DETAILED DESCRIPTION

[0043] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to specific embodiments.

[0044] It should be noted that, unless otherwise defined, the technical or scientific terms used in the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0045] The first aspect of the present invention provides a plastic cup seal detection system. Figure 1-8 As shown, the detection system includes a housing 1 with a sealed cavity and a negative pressure generator 3 for generating negative pressure in the sealed cavity. The detection system also includes:

[0046] Rotating the rotating table 5 provided at the bottom of the sealed chamber;

[0047] At least one supporting mechanism is provided on the upper end surface of the rotating table 5, and the supporting mechanism includes side blocking members 2 arranged opposite to each other and forming a feeding gap. The feeding gap has at least one placement position for placing an inverted plastic cup 4 to be inspected, and the central axis of the plastic cup 4 to be inspected at the placement position is staggered with the central axis of the rotating table 5;

[0048] A transmission mechanism for driving the side block members 2 in the supporting mechanism to move closer to or away from each other;

[0049] A clamping mechanism located at the placement position, the clamping mechanism is used to clamp the plastic cup 4 to be inspected in the placement position after the side blocking member 2 in the supporting mechanism moves to one of the positions;

[0050] A driving mechanism for driving the rotary table 5 to rotate.

[0051] In this embodiment, when in use, two sealed plastic cups 4 to be inspected are first inverted and placed between the side blocking members 2 on both sides. Since the side blocking members 2 respectively cooperate with the bottom and the rim of the plastic cups 4 to be inspected, the supporting mechanism can realize flexible positioning of the inverted plastic cups 4 to be inspected. Then, the negative pressure generator 3 is activated to make the sealed cavity in the upper part of the shell 1 in a negative pressure state, which can form a negative pressure suction effect on the liquid in the plastic cups 4 to be inspected. By gradually increasing the negative pressure strength until it reaches the standard, the suction strength of the plastic cups 4 to be inspected is changed. In this process, if there is a poor seal and leakage at the rim of any plastic cup 4 to be inspected, the internal encapsulated liquid will be sucked out, thereby completing the creep leakage test of the plastic cups 4 to be inspected on the side blocking members 2.

[0052] Then, the driving mechanism is started to drive the rotating table 5 to rotate. The rotation of the rotating table 5 drives the plastic cups 4 to be inspected on both sides to rotate synchronously, and drives the rotating shaft 7 to rise synchronously through the transmission mechanism. During the process of the rotating shaft 7 rotating and rising, the transmission mechanism drives the side block components 2 in the supporting mechanism to approach each other, which will open the feeding gap. The plastic cups 4 to be inspected on both sides will automatically break away from the side block components 2 under the action of centrifugal force and collide into the corresponding receiving boxes 9 on both sides, thereby simulating the mutual squeezing or falling state of the plastic cups 4 to be inspected in actual adaptation, so as to perform an instantaneous impact leakage test on the plastic cups 4 to be inspected that have broken away from the feeding gap.

[0053] In this embodiment, if Figure 6 、 Figure 7 、 Figure 8 As shown, the side baffle member 2 is a plug-in structure, and the side baffle member 2 has arc-shaped protruding sections on both sides of the material passing gap. The arc-shaped protruding sections cooperate with the side walls of the plastic cup 4 to be inspected. The cup mouth of the plastic cup 4 to be inspected faces downward and is stably placed on the side baffle member 2 inserted in the lower position. The arc-shaped protruding section of the side baffle member 2 inserted in the upper position is used to clamp and position the bottom of the plastic cup 4 to be inspected, which has a relatively small area and high structural strength, to avoid destroying the sealing effect of the plastic cup 4 to be inspected due to clamping the cup mouth of the plastic cup 4 to be inspected.

[0054] In this embodiment, if Figure 3 、 Figure 4 As shown, the transmission mechanism includes:

[0055] A rotating shaft 7 is slidably mounted on the rotating platform 5;

[0056] A support base 10 is provided at the bottom of the housing 1. A sleeve 11 is provided on the upper portion of the support base 10. The rotating shaft 7 is rotatably disposed in the sleeve 11.

[0057] A spherical transmission member 12 fixedly connected to the rotating shaft 7 at the back;

[0058] A spring 13 is sleeved on the rotating shaft 7, one end of the spring 13 abuts against the inner wall of the sleeve 11, and the other end of the spring 13 abuts against the back of the spherical transmission member 12;

[0059] A drive motor 14 is provided in the housing 1 , and a transmission roller 15 is mounted on the output end of the drive motor 14 , and the outer edge of the transmission roller 15 abuts against the lower spherical end of the spherical transmission member 12 ;

[0060] The output end of the drive motor 14 drives the transmission roller 15 to rotate, and then drives the rotating shaft 7 to rotate through the spherical transmission member 12, driving the rotating table 5 and the plastic cups 4 to be inspected on both sides to rotate synchronously, and drives the rotating shaft 7 to rise synchronously through the transmission mechanism. In the process of the rotating shaft 7 rotating and rising, the side block components 2 in the driving support mechanism are driven to approach each other, which will open the material feeding gap, and the plastic cups 4 to be inspected on both sides will automatically break away from the side block components 2 under the action of centrifugal force. During this process, the spring 13 can keep the spherical transmission member 12 and the outer edge of the transmission roller 15 in contact with each other at all times under the action of its own elastic force.

[0061] In this embodiment, if Figure 5 、 Figure 6 As shown, the clamping mechanism includes:

[0062] A mounting frame 8 provided on the upper end of the rotating platform 5;

[0063] A guide rod 16 fixedly arranged in the mounting frame 8;

[0064] A sliding plate 17 is provided which extends transversely through the mounting frame 8 and is further slidably mounted on the guide rod 16 , and the side stop member 2 is mounted on the sliding plate 17 ;

[0065] A second spring 18 is sleeved on the guide rod 16, with one end of the second spring 18 resting against the inner wall of the mounting frame 8, and the other end of the second spring 18 resting against the sliding plate 17. Under the elastic force of the second spring 18 itself, the sliding plate 17 can be pressed to slide on the guide rod 16, so that the side blocking component 2 can achieve a firm and flexible positioning of the plastic cup 4 to be inspected, and the flexible abutment method of holding the cup bottom with the cup mouth can avoid excessive clamping and causing excessive squeezing of the plastic cup 4 to be inspected, thereby reducing the additional impact on the inspection result.

[0066] In this embodiment, if Figure 5 、 Figure 6 As shown, the driving mechanism includes:

[0067] A push-pull rod 19 is coaxially rotated on the upper end of the rotating shaft 7, and the upper end of the push-pull rod 19 longitudinally passes through the mounting frame 8;

[0068] The connecting rod 20 is hinged to both sides of the upper end of the push-pull rod 19, and the other end of the connecting rod 20 is hinged to the sliding plate 17;

[0069] By raising the rotating shaft 7, the top ends of the connecting rods 20 on both sides are driven to rise synchronously via the push-pull rod 19, and then the sliding plates 17 on both sides are pulled toward each other by the lower ends of the connecting rods 20, thereby opening the feeding gap. Under the action of centrifugal force, the plastic cups 4 to be inspected on both sides can be automatically thrown out from the feeding gap to both sides. By controlling the rotation speed of the rotating shaft 7, the throwing speed of the plastic cups 4 to be inspected can be changed accordingly, thereby simulating the falling state of the plastic cups 4 to be inspected from different squeezing strengths or different heights.

[0070] In this embodiment, if Figure 3 As shown, a cylinder 21 is provided at the bottom of the housing, a rack 22 is mounted on the output end of the cylinder 21, a flip seat 24 is mounted on the support base 10 via a transmission shaft 23, a drive motor 14 is mounted on the flip seat 24, a gear 25 is mounted on the transmission shaft 23, and the gear 25 is engaged with the rack 22. When the cylinder 21 is not started, the flip seat 24 does not flip, that is, the outer edge of the transmission roller 15 abuts against the lowest point of the spherical transmission member 12 and is closest to the center point of the spherical transmission member 12. At this time, the rotating shaft 7 rotates at a low speed and does not rise.

[0071] When the cylinder 21 is in the open state, the output end of the cylinder 21 will drive the rack 22 to slide, and drive the flip seat 24 to flip through the gear 25 and the transmission shaft 23, which can drive the transmission roller 15 to flip synchronously, so that the outer edge of the transmission roller 15 and the abutment point of the spherical transmission member 12 are offset toward the high point, thereby achieving the purpose of lifting the rotating shaft 7 through the spherical transmission member 12 and increasing the rotation speed of the rotating shaft 7.

[0072] In this embodiment, if Figure 1 、 Figure 2 As shown, an openable and closable sealing cover 26 is provided on the top of the housing. When the sealing cover 26 is opened, the plastic cup 4 to be inspected can be freely taken in and put in. When the sealing cover 26 is closed, the negative pressure state in the upper sealing cavity of the housing 1 can be maintained.

[0073] In this embodiment, if Figure 1 As shown, receiving boxes 9 are provided on both sides of the sliding plate 17. The bottom of the receiving boxes 9 is placed horizontally below the mouth of the plastic cup 4 to be inspected, simulating the horizontal throwing state of the plastic cup 4 to be inspected, ensuring that the plastic cup 4 to be inspected can be placed in the bottom of the receiving boxes 9.

[0074] In this embodiment, if Figure 6 、 Figure 8 As shown, a storage frame 27 is provided in the receiving box 9, and a receiving groove 6 is provided on the rotating table 5 below the two inverted plastic cups 4 to be tested. Color test paper is placed in the receiving groove 6 and the storage frame 27. By observing the color test paper, it can be determined whether the plastic cups 4 to be tested have internal liquid leakage. The judgment of the test result is intuitive and easy to replace.

[0075] In this embodiment, if Figure 5 、 Figure 6 As shown, the upper end surface of the rotating table 5 is a downwardly extending arc surface, so that when the cup mouth of the plastic cup 4 to be inspected leaks, the falling internal liquid flows to the surrounding of the rotating table 5. After the inspection is completed, if the cup mouth of the plastic cup 4 to be inspected leaks, it is only necessary to use pure water to rinse the surrounding of the rotating table 5, so as to facilitate timely cleaning of the inspection system.

[0076] It should be understood by those skilled in the art that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention, including the claims, is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the above aspects of the present invention, which are not provided in detail for the sake of simplicity.

[0077] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A plastic cup opening sealing detection system, comprising a housing (1) provided with a sealing cavity and a negative pressure generator (3) for generating negative pressure in the sealing cavity, characterized in that: The detection system also includes: Rotating a rotating table (5) provided at the bottom of the sealed chamber; At least one supporting mechanism is provided on the upper end surface of the rotating table (5), the supporting mechanism comprising side blocking components (2) arranged opposite to each other and forming a material feeding gap, the material feeding gap having at least one placement position for placing an inverted plastic cup (4) to be inspected, the central axis of the plastic cup (4) to be inspected at the placement position being offset from the central axis of the rotating table (5); A transmission mechanism for driving the side blocking components (2) in the supporting mechanism to move toward or away from each other; a clamping mechanism located at the placement position, the clamping mechanism being used to clamp the plastic cup (4) to be inspected at the placement position after the side blocking component (2) in the supporting mechanism moves to one of the positions; A driving mechanism for driving the rotary table (5) to rotate; The transmission mechanism comprises: A rotating shaft (7) slidably arranged on the rotating platform (5); A support seat (10) is provided at the bottom of the housing (1), a sleeve (11) is provided on the upper portion of the support seat (10), and the rotating shaft (7) is rotatably disposed in the sleeve (11); A spherical transmission member (12) fixedly connected to the rotating shaft (7) at its back; A spring (13) is sleeved on the rotating shaft (7), one end of the spring (13) abuts against the inner wall of the sleeve (11) head, and the other end of the spring (13) abuts against the back of the spherical transmission member (12); A drive motor (14) is provided in the housing (1), a transmission roller (15) is installed at the output end of the drive motor (14), and the outer edge of the transmission roller (15) abuts against the lower spherical end of the spherical transmission member (12); The clamping mechanism comprises: A mounting frame (8) provided on the upper end of the rotating platform (5); A guide rod (16) fixedly arranged in the mounting frame (8); a sliding plate (17) extending transversely through the mounting frame (8), the sliding plate (17) being further slidably mounted on the guide rod (16), and the side blocking component (2) being mounted on the sliding plate (17); A second spring (18) is sleeved on the guide rod (16), one end of the second spring (18) abuts against the inner wall of the mounting frame (8), and the other end of the second spring (18) abuts against the sliding plate (17); The driving mechanism comprises: A push-pull rod (19) is coaxially rotated on the upper end of the rotating shaft (7), wherein the upper end of the push-pull rod (19) longitudinally passes through the mounting frame (8); A connecting rod (20) is hinged to both sides of the upper end of the push-pull rod (19), and the other end of the connecting rod (20) is hinged to the sliding plate (17).

2. A plastic cup seal detection system according to claim 1, characterized in that: The side baffle component (2) is a plug-in structure, and the side baffle component (2) has arc-shaped protruding sections on both sides of the material passing gap, and the arc-shaped protruding sections cooperate with the side walls of the plastic cup (4) to be inspected.

3. A plastic cup seal detection system according to claim 1, characterized in that: A cylinder (21) is provided at the bottom of the shell, a rack (22) is installed at the output end of the cylinder (21), a flip seat (24) is installed on the support seat (10) via a transmission shaft (23), the drive motor (14) is installed on the flip seat (24), a gear (25) is installed on the transmission shaft (23), and the gear (25) is meshed with the rack (22).

4. A plastic cup seal detection system according to claim 1, characterized in that: A seal cover (26) that can be opened and closed is provided on the top of the shell.

5. A plastic cup seal detection system according to claim 1, characterized in that: Receive boxes (9) are provided on both sides of the sliding plate (17), and the bottom of the receive box (9) is placed horizontally below the mouth of the plastic cup (4) to be inspected.

6. A plastic cup seal detection system according to claim 5, characterized in that: A storage frame (27) is provided in the receiving box (9), and a receiving groove (6) is provided below the two inverted plastic cups (4) to be tested on the rotating table (5). Color developing test papers are placed in the receiving groove (6) and the storage frame (27).

7. A plastic cup seal detection system according to claim 1, characterized in that: The upper end surface of the rotating platform (5) is provided as a downwardly extending arc surface, so that when leakage occurs at the mouth of the plastic cup (4) to be inspected, the falling internal liquid flows to the surroundings of the rotating platform (5).

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