Paper cup tester and test method

Abstract

The invention mainly relates to the technical field of paper cup testing, in particular to a paper cup tester and a testing method. Comprising a base, a supporting frame arranged on the base and a lifting mechanism arranged on the supporting frame. The bottom end of the lifting mechanism is connected with a cup top pressing assembly, and the cup top pressing assembly and a cup body positioning base arranged on the base are distributed in an aligned mode. L-shaped rods are symmetrically arranged on the two sides of the cup body positioning base, the ends of the horizontal sections of the L-shaped rods face the cup body positioning base and are provided with first pressing plates, and the vertical sections of the L-shaped rods are in transmission connection with the lifting mechanism through linkage assemblies. The linkage assembly is arranged to drive the L-shaped rods on the two sides to move oppositely in the horizontal direction when the lifting mechanism drives the cup top pressing assembly to press downwards to make contact with the cup top, so that the first pressing plate synchronously applies lateral clamping force to the upper middle portion of the cup body, and a combined loading test state of axial pressure on the top of the paper cup and lateral pressure on the cup body is formed. According to the invention, pressure testing can be simultaneously performed on the top and the cup body of the paper cup through the same driving source.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of paper cup testing, and in particular to a paper cup testing instrument and a testing method. Background Art

[0002] As a disposable food packaging container, the structural strength of paper cups is directly related to their safety of use and reliability in carrying liquids. Industry standards require that the compressive strength of the annular area on the top of the paper cup and the side walls of the cup body be tested separately to prevent the top from collapsing during transportation and stacking and the side walls from breaking during use. Traditional testing equipment generally adopts a split pressure testing architecture: a vertically downward hydraulic pressure mechanism is usually configured for cup top testing, while a horizontal radial pneumatic extrusion device is required for cup body testing. The two independent drive systems have high cost and use costs, and the position of the paper cup needs to be manually adjusted for step-by-step testing during the testing process, which takes a long time. Therefore, there is an urgent need to develop an integrated testing device that can realize a single-drive dual-pressure testing mode through structural innovation, thereby improving the equipment economy and testing efficiency while ensuring detection accuracy. Summary of the Invention

[0003] 1. Technical problem to be solved by the invention: The present invention provides a paper cup tester and a testing method, which are used to solve the technical problems existing in the above-mentioned background technology.

[0004] 2. Technical solution: To achieve the above-mentioned object, the present invention provides a technical solution as follows: a paper cup tester, comprising a base, a support frame arranged thereon, and a lifting mechanism arranged on the support frame; The bottom end of the lifting mechanism is connected to a cup top pressing assembly, and the cup top pressing assembly is aligned with the cup body positioning seat provided on the base; The cup body positioning seat is symmetrically provided with L-shaped rods on both sides, the horizontal end of the L-shaped rod faces the cup body positioning seat and is provided with a first pressing plate, and the vertical section is connected to the lifting mechanism through a linkage assembly; The linkage assembly is configured to drive the L-shaped rods on both sides to move toward each other in the horizontal direction when the lifting mechanism drives the cup top pressing assembly to press down and contact the cup top, so that the first pressing plate synchronously applies a lateral clamping force to the upper middle part of the cup body, forming a composite loading test state of axial pressure on the top of the paper cup and lateral pressure on the cup body.

[0005] Further, the support frame is in an F shape and includes a vertical plate, a lower horizontal plate and an upper horizontal plate. An activity groove is formed through the surface of the lower horizontal plate. The lifting mechanism includes an activity rod slidably matched with the activity groove. The bottom of the activity rod is fixedly connected to the cup top pressing assembly, and a threaded groove with a predetermined depth is formed at the top. A first lead screw is threadedly connected in the threaded groove. The first lead screw is rotatably connected to the upper horizontal plate, and the top extends to the top of the upper horizontal plate and is provided with a first handle.

[0006] Further, two symmetrically distributed and horizontally extending first slide rails are arranged at the top of the upper horizontal plate. A first slider is slidably matched in the first slide rail. A connecting plate is arranged at the top of the first slider. A worm is rotatably installed between the two connecting plates. One end of the worm is equipped with a second handle and is matched with a worm gear arranged on the first lead screw.

[0007] Further, a second lead screw is rotatably installed in one of the first slide rails in the same direction as its extension direction. The second lead screw is threadedly connected to the corresponding first slider, and one end is equipped with a third handle.

[0008] Further, the linkage assembly includes a second slider fixedly installed at the end of the vertical section of the L-shaped rod. The second slider is slidably installed in the second slide rail. The second slide rail extends horizontally and is fixed to the bottom of the lower horizontal plate. The second slider and the activity rod are hinged through a connecting rod member.

[0009] Further, a first sliding rod is arranged on one side of the vertical section of the L-shaped rod near the bottom. The first sliding rod extends horizontally and is slidably connected to a guide slide plate fixed to the top of the base.

[0010] Further, the cup top pressing assembly includes a top plate. The top of the top plate is fixedly connected to the bottom of the activity rod, and a telescopic cylinder is installed at the bottom. The telescopic end of the telescopic cylinder is vertically downward and is provided with a second pressing plate. The top of the second pressing plate is slidably connected to the top plate through a rectangular and vertical second sliding rod, and a rubber ring is arranged at the bottom. Two flexible conveying pipes are communicated with the second pressing plate. The two flexible conveying pipes are respectively connected to a water pump and an air pump.

[0011] Further, a rotating shaft groove is formed on one side of the horizontal section of the L-shaped rod, and a threaded hole communicated with it is formed on the adjacent side. A connecting shaft is rotatably installed in the rotating shaft groove. The connecting shaft is fixedly connected to the first pressing plate, and a positioning screw is threadedly matched in the threaded hole.

[0012] Further, a plurality of marking rings are drawn on the top of the cup body positioning seat. The radii of the marking rings are different from each other and are coaxially distributed.

[0013] Further, a testing method for a paper cup tester includes the following usage steps: S1: Place the paper cup to be tested on the cup body positioning seat; S2: Drive the first lead screw to rotate, which can drive the movable rod to descend, and the second pressing plate will descend synchronously until it abuts against the top of the paper cup. At the same time, the two L-shaped rods will approach each other so that the first pressing plate abuts against the cup body; S3: Drive the second lead screw to rotate so that the worm meshes with the worm gear. At this time, drive the first lead screw to rotate again, and the movable rod can be lowered more precisely and carefully, so as to facilitate observing the extrusion situation of the paper cup; S4: Release the paper cup, drive the second pressing plate to descend again to abut against the top of the paper cup through the telescopic cylinder, and inject colored liquid into the paper cup through the water pump and the corresponding flexible delivery pipe. Observe the outer wall of the paper cup to check whether there is water leakage to test the leak-proof performance of the paper cup in turn; S5: The second pressing plate cooperates with the rubber ring to press the mouth of the paper cup to achieve a sealing effect. Inject gas into the paper cup through the air pump and the corresponding flexible delivery pipe, which can increase the air pressure in the paper cup. If the paper cup leaks, it can accelerate the water seepage rate on the outer wall of the paper cup.

[0014] 3. Beneficial effects: Adopting the technical solution provided by the present invention, compared with the prior art, it has the following beneficial effects: After placing the paper cup to be tested on the top of the cup body positioning seat, drive the cup top pressing assembly to descend and abut against the top of the paper cup through the lifting mechanism. At the same time, through the transmission of the linkage assembly, the two L-shaped rods will approach each other so that the first pressing plate abuts against the cup body of the paper cup, thereby being able to conduct pressure tests on the top and the cup body of the paper cup simultaneously, improving the test efficiency. At the same time, the unified drive source between the two reduces the overall cost.

[0015] After the pressure test of the paper cup is completed, drive the second pressing plate to descend again to abut against the top of the paper cup through the telescopic cylinder, and inject colored liquid into the paper cup through the water pump and the corresponding flexible delivery pipe. Observe the outer wall of the paper cup to check whether there is water leakage to test the leak-proof performance of the paper cup in turn. And the second pressing plate cooperates with the rubber ring to press the mouth of the paper cup to achieve a sealing effect. Inject gas into the paper cup through the air pump and the corresponding flexible delivery pipe, which can increase the air pressure in the paper cup. If the paper cup leaks, it can accelerate the water seepage rate on the outer wall of the paper cup. Brief description of the drawings

[0016] Figure 1 It is the overall structure schematic diagram of the present invention; Figure 2 It is the structure schematic diagram of the linkage assembly of the present invention Figure 1 ; Figure 3 It is the structure schematic diagram of the cup top pressing assembly of the present invention; Figure 4 It is the structure schematic diagram of the linkage assembly of the present invention Figure 2 ; Figure 5 Schematic diagram of the lifting mechanism of the present invention Figure 1 ; Figure 6 Schematic diagram of the lifting mechanism of the present invention Figure 2 ; Figure 7 Exploded structure schematic diagram of the L-shaped rod and the first pressing plate of the present invention; Figure 8 Schematic diagram of the cup positioning seat structure of the present invention

[0017] Reference numerals: 1, base; 2, support frame; 21, vertical plate; 22, lower horizontal plate; 221, movable groove; 23, upper horizontal plate; 3, lifting mechanism; 31, movable rod; 3101, threaded groove; 32, first lead screw; 33, first grip; 34, first slide rail; 35, first slider; 36, second lead screw; 37, second grip; 38, connecting plate; 39, worm; 310, third grip; 311, worm gear; 4, cup top pressing assembly; 41, top plate; 42, telescopic cylinder; 43, second pressing plate; 44, second sliding rod; 45, rubber ring; 5, cup positioning seat; 51, marking ring; 6, L-shaped rod; 61, rotating shaft groove; 62, threaded hole; 7, first pressing plate; 71, connecting shaft; 8, linkage assembly; 81, second slider; 82, second slide rail; 83, link member; 84, first sliding rod; 85, guide slide plate; 9, flexible delivery pipe; 10, water pump; 11, air pump; 12, positioning screw Detailed implementation manners

[0018] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive

[0019] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0021] In the present invention, unless otherwise clearly specified and defined, terms such as "installed", "connected", "coupled", "fixed", "provided with", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment

[0022] Referring to the attached Figure 1-8 , a paper cup tester, comprising a base 1, a support frame 2 arranged thereon, and a lifting mechanism 3 arranged on the support frame 2; The bottom end of the lifting mechanism 3 is connected with a cup top pressing assembly 4, and the cup top pressing assembly 4 is aligned and distributed with a cup body positioning seat 5 arranged on the base 1; L-shaped rods 6 are symmetrically arranged on both sides of the cup body positioning seat 5. The end of the horizontal section of the L-shaped rod 6 faces the cup body positioning seat 5 and is provided with a first pressing plate 7, and the vertical section is in transmission connection with the lifting mechanism 3 through a linkage assembly 8; The linkage assembly 8 is arranged such that when the lifting mechanism 3 drives the cup top pressing assembly 4 to press down and contact the cup top, it drives the two L-shaped rods 6 to move towards each other in the horizontal direction, so that the first pressing plate 7 simultaneously applies a lateral clamping force to the middle and upper parts of the cup body, forming a composite loading test state of axial pressure on the top of the paper cup and lateral pressure on the cup body.

[0023] In this embodiment, after placing the paper cup to be tested on the top of the cup body positioning seat 5, the lifting mechanism 3 is used to drive the cup top pressing assembly 4 to descend and abut against the top of the paper cup. At the same time, through the transmission of the linkage assembly 8, the two L-shaped rods 6 will approach each other, so that the first pressing plate 7 abuts against the cup body of the paper cup, thereby enabling pressure tests to be carried out on the top and the cup body of the paper cup simultaneously, improving the test efficiency, and reducing the overall cost due to the unified drive source between the two.

[0024] The support frame 2 is in an F shape and includes a vertical plate 21, a lower horizontal plate 22 and an upper horizontal plate 23. A movable groove 221 is formed through the surface of the lower horizontal plate 22. The lifting mechanism 3 includes a movable rod 31 that is slidably engaged with the movable groove 221. The bottom of the movable rod 31 is fixedly connected to the cup top pressing assembly 4, and a threaded groove 3101 with a predetermined depth is formed at the top. A first lead screw 32 is threadedly connected in the threaded groove 3101. The first lead screw 32 is rotatably connected to the upper horizontal plate 23, and the top extends to the top of the upper horizontal plate 23 and is provided with a first handle 33.

[0025] In this embodiment, after holding the first handle 33 and driving the first lead screw 32 to rotate, the movable rod 31 can be driven to slide in the movable groove 221 by the threaded fit with the threaded groove 3101, so that the cup top pressing assembly 4 can be lifted and lowered.

[0026] Two symmetrically distributed and horizontally extending first slide rails 34 are provided on the top of the upper horizontal plate 23. A first slider 35 is slidably engaged in the first slide rail 34. A connecting plate 38 is provided on the top of the first slider 35. A worm 39 is rotatably installed between the two connecting plates 38. One end of the worm 39 is equipped with a second handle 37 and is matched with a worm gear 311 provided on the first lead screw 32; A second lead screw 36 is rotatably installed in one of the first slide rails 34 and has the same extending direction as the first slide rail 34. The second lead screw 36 is threadedly connected to the corresponding first slider 35, and one end is equipped with a third handle 310.

[0027] In this embodiment, after holding the third handle 310 and rotating the second lead screw 36, the first slider 35 threadedly connected thereto can be driven to slide in the corresponding first slide rail 34, and the other first slider 35 moves synchronously until the worm 39 and the worm gear 311 are engaged. At this time, holding the second handle 37 and rotating the worm 39 can drive the first lead screw 32 to rotate more precisely, so that the pressure test of the paper cup can be carried out more carefully.

[0028] The linkage assembly 8 includes a second slider 81 fixedly installed at the end of the vertical section of the L-shaped rod 6. The second slider 81 is slidably installed in the second slide rail 82. The second slide rail 82 extends horizontally and is fixed to the bottom of the lower horizontal plate 22. The second slider 81 is hinged to the movable rod 31 through a connecting rod member 83; A first sliding rod 84 is provided on one side of the vertical section of the L-shaped rod 6 near the bottom. The first sliding rod 84 extends horizontally and is slidably connected to a guide slide plate 85 fixed to the top of the base 1.

[0029] In this embodiment, when the movable rod 31 descends, the link member 83 will pull the second slider 81 to slide inward on the second slide rail 82, and the two L-shaped rods 6 fixedly connected thereto can move relatively closer while being transported synchronously. At the same time, the L-shaped rod 6 can also slide through the first slide rod 84 and the guide slide plate 85, thereby improving the stability of the overall movement.

[0030] The cup top pressing assembly 4 includes a top plate 41. The top of the top plate 41 is fixedly connected to the bottom of the movable rod 31, and a telescopic cylinder 42 is assembled at the bottom. The telescopic end of the telescopic cylinder 42 is vertically downward and is provided with a second pressing plate 43. The top of the second pressing plate 43 is slidably connected to the top plate 41 through a rectangular and vertical second slide rod 44, and a rubber ring 45 is provided at the bottom. Two flexible conveying pipes 9 are communicated with the second pressing plate 43, and the two flexible conveying pipes 9 are respectively connected to a water pump 10 and an air pump 11.

[0031] In this embodiment, after the pressure test of the paper cup is completed, the second pressing plate 43 is driven by the telescopic cylinder 42 to descend and abut against the top of the paper cup again. The water pump 10 cooperates with the corresponding flexible conveying pipe 9 to inject colored liquid into the paper cup, and the outer wall of the paper cup is observed to check whether there is water leakage to test the leak-proof performance of the paper cup in turn. Moreover, the second pressing plate 43 cooperates with the rubber ring 45 to press the mouth of the paper cup to achieve a sealing effect. The air pump 11 cooperates with the corresponding flexible conveying pipe 9 to inject gas into the paper cup, which can increase the air pressure in the paper cup. If the paper cup has a leak, the seepage rate of the outer wall of the paper cup can be accelerated.

[0032] On one side of the horizontal section of the L-shaped rod 6, a rotating shaft groove 61 is opened, and a threaded hole 62 communicated with it is opened on the adjacent side. A connecting shaft 71 is rotatably installed in the rotating shaft groove 61, the connecting shaft 71 is fixedly connected to the first pressing plate 7, and a positioning screw 12 is in threaded fit in the threaded hole 62.

[0033] In this embodiment, after the first pressing plate 7 rotates in the rotating shaft groove 61 through the connecting shaft 71, it can be locked by tightening the positioning screw 12, so that the angle of the first pressing plate 7 can be changed to adapt to paper cups of different specifications.

[0034] A number of marking rings 51 are drawn on the top of the cup body positioning seat 5, and the radii of the marking rings 51 are different from each other and are coaxially distributed.

[0035] In this embodiment, after the paper cup is placed on the top of the cup body positioning seat 5, it can be aligned with the marking ring 51 to ensure the accuracy of the working position. The marking rings 51 of different specifications are used to adapt to paper cups of different specifications.

[0036] Testing steps of the paper cup tester: S1: Place the paper cup to be tested on the cup body positioning seat 5; S2: Driving the first lead screw 32 to rotate can drive the movable rod 31 to descend. The second pressing plate 43 will descend synchronously until it abuts against the top of the paper cup. At the same time, the two L-shaped rods 6 will approach each other so that the first pressing plate 7 abuts against the cup body. S3: Driving the second lead screw 36 to rotate enables the worm 39 to mesh with the worm gear 311. At this time, driving the first lead screw 32 to rotate can make the movable rod 31 descend more precisely and meticulously, so as to facilitate observing the extrusion situation of the paper cup. S4: Release the paper cup. Drive the second pressing plate 43 to descend again to abut against the top of the paper cup through the telescopic cylinder 42, and inject colored liquid into the paper cup through the water pump 10 and the corresponding flexible conveying pipe 9. Observe the outer wall of the paper cup to check whether there is water seepage to test the leak-proof performance of the paper cup in turn. S5: The second pressing plate 43 cooperates with the rubber ring 45 to press the mouth of the paper cup to achieve a sealing effect. Inject gas into the paper cup through the air pump 11 and the corresponding flexible conveying pipe 9, which can increase the air pressure in the paper cup. If the paper cup leaks, it can accelerate the water seepage rate on the outer wall of the paper cup.

[0037] Finally, it should be noted that pressure sensors are arranged in both the first pressing plate 7 and the second pressing plate 43, which can cooperate with the detection visual console to observe the pressure situation of the paper cup. This is common knowledge and will not be elaborated in detail here.

[0038] The above-described embodiments only represent a certain implementation manner of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent of the present invention should be subject to the appended claims.

[0039] It should be noted that the above content belongs to the technical cognition scope of the inventor. Due to the vast and extremely complex technical content in this field, the above content of this application does not necessarily constitute the prior art.

Claims

1. A paper cup tester, characterized in that: It comprises a base (1), a support frame (2) arranged thereon, and a lifting mechanism (3) arranged on the support frame (2); The bottom end of the lifting mechanism (3) is connected to a cup top pressing assembly (4), and the cup top pressing assembly (4) is aligned with a cup body positioning seat (5) provided on the base (1); L-shaped rods (6) are symmetrically arranged on both sides of the cup body positioning seat (5), the horizontal end of the L-shaped rod (6) faces the cup body positioning seat (5) and is provided with a first pressing plate (7), and the vertical section is transmission-connected to the lifting mechanism (3) via a linkage assembly (8); The linkage assembly (8) is configured to drive the L-shaped rods (6) on both sides to move toward each other in the horizontal direction when the lifting mechanism (3) drives the cup top pressing assembly (4) to press down and contact the cup top, so that the first pressing plate (7) synchronously applies a lateral clamping force to the upper middle part of the cup body, forming a composite loading test state of the axial pressure on the top of the paper cup and the lateral pressure on the cup body.

2. The paper cup tester according to claim 1, wherein: The support frame (2) is F-shaped and includes a vertical plate (21), a lower horizontal plate (22) and an upper horizontal plate (23). A movable groove (221) is provided through the surface of the lower horizontal plate (22). The lifting mechanism (3) includes a movable rod (31) that slides and cooperates with the movable groove (221). The bottom of the movable rod (31) is fixedly connected to the cup top pressing component (4), and the top is provided with a threaded groove (3101) of a predetermined depth. The threaded groove (3101) is internally threaded with a first screw rod (32). The first screw rod (32) is rotatably connected to the upper horizontal plate (23), and the top extends to the top of the upper horizontal plate (23) and is installed with a first handle (33).

3. A paper cup tester according to claim 2, wherein: Two symmetrically distributed and horizontally extending first slide rails (34) are provided on the top of the upper horizontal plate (23), a first slider (35) is slidably fitted in the first slide rails (34), a connecting plate (38) is provided on the top of the first slider (35), a worm (39) is rotated between the two connecting plates (38), one end of the worm (39) is equipped with a second handle (37), and matches with the worm wheel (311) provided on the first screw rod (32).

4. The paper cup tester according to claim 3, characterized in that: A second screw rod (36) extending in the same direction as the first slide rail (34) is rotatably installed in one of the first slide rails (34). The second screw rod (36) is threadedly connected to the corresponding first slider (35) and has a third handle (310) mounted on one end.

5. The paper cup tester according to claim 2, characterized in that: The linkage assembly (8) includes a second slider (81) fixedly mounted on the end of the vertical section of the L-shaped rod (6), the second slider (81) being slidably mounted on a second slide rail (82), the second slide rail (82) extending horizontally and fixed to the bottom of the lower horizontal plate (22), and the second slider (81) being hingedly connected to the movable rod (31) via a connecting rod (83).

6. The paper cup tester and testing method according to claim 5, characterized in that: A first sliding rod (84) is provided on one side of the vertical section of the L-shaped rod (6) near the bottom. The first sliding rod (84) extends horizontally and is slidably connected to a guide slide (85) fixed on the top of the base (1).

7. The paper cup tester according to claim 3, characterized in that: The cup top pressing assembly (4) includes a top plate (41). The top of the top plate (41) is fixedly connected to the bottom of the movable rod (31), and a telescopic cylinder (42) is assembled at the bottom. The telescopic end of the telescopic cylinder (42) is vertically downward and is provided with a second pressing plate (43). The top of the second pressing plate (43) is slidably connected to the top plate (41) through a rectangular and vertically arranged second sliding rod (44), and a rubber ring (45) is arranged at the bottom. Two flexible conveying pipes (9) are communicated with the second pressing plate (43). The two flexible conveying pipes (9) are respectively connected to a water pump (10) and an air pump (11).

8. A paper cup tester according to claim 1, characterized in that: On one side of the horizontal section of the L-shaped rod (6), a rotating shaft groove (61) is opened, and a threaded hole (62) communicated with it is opened on the adjacent side. A connecting shaft (71) is rotatably installed in the rotating shaft groove (61), and the connecting shaft (71) is fixedly connected to the first pressing plate (7). A positioning screw (12) is in threaded fit in the threaded hole (62).

9. The paper cup tester according to claim 1, characterized in that: A number of marking rings (51) are drawn on the top of the cup body positioning seat (5), and the radii of the marking rings (51) are different from each other and are coaxially distributed.

10. A testing method for a paper cup tester, characterized in that: A paper cup tester using any one of claims 1-9 includes the following usage steps: S1: Place the paper cup to be tested on the cup body positioning seat (5); S2: Drive the first lead screw (32) to rotate, and the movable rod (31) can be driven to descend. The second pressing plate (43) will descend synchronously until it abuts against the top of the paper cup. At the same time, the two L-shaped rods (6) will approach each other so that the first pressing plate (7) abuts against the cup body; S3: Drive the second lead screw (36) to rotate so that the worm (39) meshes with the worm gear (311). At this time, drive the first lead screw (32) to rotate, and the movable rod (31) can be made to descend more precisely and carefully, so as to facilitate observing the extrusion situation of the paper cup; S4: Release the paper cup, drive the second pressing plate (43) to descend again to abut against the top of the paper cup through the telescopic cylinder (42), and inject colored liquid into the paper cup through the water pump (10) cooperating with the corresponding flexible conveying pipe (9). Observe the outer wall of the paper cup to check whether there is water seepage to test the leak-proof performance of the paper cup in turn; S5: The second pressing plate (43) cooperates with the rubber ring (45) to press the paper cup mouth to achieve a sealing effect. Inject gas into the paper cup through the air pump (11) cooperating with the corresponding flexible conveying pipe (9), which can increase the air pressure in the paper cup. If the paper cup leaks, the seepage rate of the outer wall of the paper cup can be accelerated.

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