A paper disc stiffness tester

Abstract

This application belongs to the field of paper tray testing technology and discloses a paper tray stiffness tester, including a base. A support rod is fixedly mounted on the upper surface of the base, and a mounting box is slidably mounted on the outer wall of the support rod. A measuring rod for testing the stiffness of the paper tray is mounted on the bottom surface of the mounting box. A mounting rod with a U-shaped cross-section is fixedly mounted on the upper surface of the base. An L-shaped abutment is fixedly mounted on the upper surface of the mounting rod. A fixing post is fixedly mounted on the upper surface of the mounting rod. A positioning component for positioning the paper tray is also provided on the upper surface of the mounting rod. This application has the effect of reducing the difficulty of work for operators.

Description

Technical Field

[0001] This utility model relates to the field of paper plate testing technology, and in particular to a paper plate stiffness tester. Background Technology

[0002] Paper plates are containers made by mechanically processing and bonding paper (white cardboard) made from chemical wood pulp. They are characterized by safety, hygiene, lightness, and convenience, and are disposable. Many factors affect the quality and performance of paper plates, among which stiffness is a common one. Stiffness refers to the paper plate's resistance to bending under external force. It affects the quality of the paper plate itself; a stiffness below the normal value makes the paper plate soft and brittle, easily broken. Paper plates with poor stiffness will deform severely or even become impossible to lift after food is poured into them, affecting their usability.

[0003] The paper tray stiffness tester works by fixing the paper tray to a worktable. Then, by moving the measuring rod downwards, it presses against the paper tray. A pressure sensor inside the measuring rod records the pressure and transmits it to a computer connected to the testing device. The computer displays the data as a line graph, allowing the operator to determine if the paper tray's stiffness meets the standard. During this process, the operator places the center of the paper tray on a fixed post. Then, a support plate is used to hold the other end of the paper tray in place to complete the fixation. Once fixed, the measuring rod presses against the end of the paper tray furthest from the support plate to test the stiffness. This process requires careful alignment to ensure the center of the paper tray is properly positioned on the fixed post, increasing the difficulty of the task. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a paper tray stiffness tester.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a paper tray stiffness tester includes a base, a support rod fixedly disposed on the upper surface of the base, an installation box slidably disposed on the outer wall of the support rod, a measuring rod for testing the stiffness of the paper tray disposed on the bottom surface of the installation box, an installation rod with a U-shaped cross-section fixedly disposed on the upper surface of the base, an abutment with an L-shaped cross-section fixedly disposed on the upper surface of the installation rod, a fixing post fixedly disposed on the upper surface of the installation rod, and a positioning component for positioning the paper tray disposed on the upper surface of the installation rod.

[0006] By adopting the above technical solution, when workers need to test the stiffness of a paper tray, they must place the paper tray body on the fixed post, aligning the axis of the paper tray body with the axis of the fixed post. Then, the worker controls the abutment to contact the upper surface of one end of the paper tray body. At this point, the worker needs to move the mounting box downwards, causing the measuring rod to move downwards under the action of the mounting box, so that the lower end of the measuring rod contacts the upper surface of the paper tray body away from the abutment, causing the paper tray body to deform. The pressure sensor inside the measuring rod records the force on the paper tray body and displays it on a computer, thus completing the stiffness test of the paper tray body. During this process, the worker uses the positioning component to place the paper tray body on the upper surface of the fixed post, reducing the difficulty of aligning the paper tray body with the fixed post and thus reducing the workload.

[0007] Furthermore, the positioning component includes two T-shaped pieces slidably disposed on the upper surface of the mounting rod. The upper surface of the two T-shaped pieces is provided with a plurality of positioning holes in an array. The positioning component also includes four positioning posts installed in the positioning holes. Two positioning posts are respectively installed on the two T-shaped pieces. The positioning posts are slidably connected to the positioning holes. The paper tray body is provided on the plurality of positioning posts.

[0008] By adopting the above technical solution, when the worker needs to place the paper tray body on the upper surface of the fixed column, the worker places the paper tray body on the upper surface of the fixed column. Then, the worker places the positioning columns into the positioning holes so that the distance between the axis of each positioning column and the axis of the fixed column is equal. Next, the worker slides the two T-shaped pieces closer together, so that all four fixed columns abut against the side wall of the paper tray body. At this point, the distance between the axes of the four positioning columns and the axis of the paper tray body is equal, thus aligning the axis of the paper tray body with the axis of the fixed column. This reduces the difficulty for the worker to align the paper tray body with the fixed column, thereby reducing the workload of the worker.

[0009] Furthermore, a trapezoidal groove is provided on the side wall of the mounting rod, and two trapezoidal parts are slidably disposed in the trapezoidal groove. The two trapezoidal parts are respectively fixed to two T-shaped parts. A bidirectional screw is rotatably disposed in the trapezoidal groove, and the bidirectional screw is threadedly connected to the two trapezoidal parts respectively.

[0010] By adopting the above technical solution, when the worker needs to slide the T-shaped component, the worker needs to rotate the bidirectional screw, which causes the trapezoidal components to slide closer together under the action of the bidirectional screw. This reduces the difficulty for the worker in sliding the T-shaped component and thus reduces the workload. In addition, the bidirectional screw reduces the probability of the T-shaped component sliding when subjected to external forces, thereby improving the stability of the device.

[0011] Furthermore, a rotating groove is formed in the trapezoidal groove, and an annular groove is formed on the inner wall of the rotating groove. The bidirectional screw is rotatably connected to the rotating groove, and an annular block is rotatably arranged in the annular groove. The annular block is fixed to the bidirectional screw.

[0012] By adopting the above technical solution, when the operator rotates the bidirectional screw, the annular block rotates under the action of the bidirectional screw. During this process, the annular block limits the movement of the bidirectional screw, thereby reducing the probability of the bidirectional screw moving and improving the stability of the device.

[0013] Furthermore, the abutment includes a connecting rod fixedly disposed on the upper surface of the mounting rod, a sliding groove is provided through the side wall of the connecting rod, the abutment also includes an abutment plate slidably disposed in the sliding groove and a threaded rod threaded through the upper surface of the connecting rod, the threaded rod being rotatably connected to the abutment plate.

[0014] By adopting the above technical solution, when the operator needs to control the contact part to contact the upper surface of one end of the paper tray body, the operator needs to rotate the threaded rod, thereby causing the threaded rod to move downward, so that the contact plate slides downward under the action of the threaded rod, and thus the bottom surface of the contact plate contacts the upper surface of the paper tray body.

[0015] Furthermore, a control motor for controlling the up-and-down movement of the mounting box is provided on the outer wall of the mounting box.

[0016] By adopting the above technical solution, when the staff needs to move the installation box, the staff needs to start the control motor, which in turn controls the installation box to move up and down, thereby reducing the difficulty for the staff to move the installation box and thus reducing the difficulty of the staff's work.

[0017] Furthermore, a spherical groove is provided on the upper surface of the fixed column, and a ball bearing is rotatably disposed in the spherical groove.

[0018] By adopting the above technical solution, the ball bearings reduce the probability of damage to the bottom surface when the paper tray body is deformed, thereby improving the practicality of the device.

[0019] Furthermore, a rubber layer is fitted onto the lower end of the positioning post.

[0020] By adopting the above technical solution, the rubber has good elasticity, and the rubber layer made of rubber material increases the maximum static friction between the positioning post and the positioning hole, thereby reducing the probability of the positioning post shaking during use and thus improving the stability of the device.

[0021] In summary, this utility model has the following beneficial effects:

[0022] 1. In this application, when the operator needs to test the stiffness of the paper tray, the operator must place the paper tray body on the fixed post, thereby aligning the axis of the paper tray body with the axis of the fixed post. Then, the operator controls the abutment to abut against the upper surface of one end of the paper tray body. At this time, the operator needs to move the mounting box downwards, causing the measuring rod to move downwards under the action of the mounting box, so that the lower end of the measuring rod abuts against the upper surface of the paper tray body away from the abutment, thereby causing the paper tray body to deform. At this time, the pressure sensor inside the measuring rod records the force on the paper tray body and displays it on the computer, thus completing the test of the paper tray body's stiffness. In this process, the operator uses the positioning component to place the paper tray body on the upper surface of the fixed post, thereby reducing the difficulty of aligning the paper tray body with the fixed post and thus reducing the difficulty of the operator's work.

[0023] 2. In this application, when the worker needs to place the paper tray body on the upper surface of the fixed post, the worker places the paper tray body on the upper surface of the fixed post. Then, the worker places the positioning posts into the positioning holes so that the distance between the axis of each positioning post and the axis of the fixed post is equal. Then, the worker slides the two T-shaped pieces closer together, so that all four fixed posts abut against the side wall of the paper tray body. At this time, the distance between the axis of the four positioning posts and the axis of the paper tray body is equal, thus aligning the axis of the paper tray body with the axis of the fixed post, thereby reducing the difficulty for the worker to align the paper tray body with the fixed post, and thus reducing the difficulty of the worker's work.

[0024] 3. In this application, when the worker needs to slide the T-shaped component, the worker needs to rotate the bidirectional screw, which causes the trapezoidal components to slide closer together under the action of the bidirectional screw. This reduces the difficulty for the worker to slide the T-shaped component, thereby reducing the workload. Furthermore, the bidirectional screw reduces the probability of the T-shaped component sliding under external force, thus improving the stability of the device. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the positioning component in an embodiment of this utility model;

[0027] Figure 3 This is a cross-sectional structural diagram of the mounting rod in an embodiment of this utility model;

[0028] Figure 4 yes Figure 3 A magnified structural diagram of A in the middle.

[0029] In the diagram: 1. Base; 11. Support rod; 12. Mounting box; 13. Measuring rod; 14. Mounting rod; 15. Abutment piece; 151. Connecting rod; 152. Abutment plate; 153. Threaded rod; 16. Fixing post; 2. Positioning assembly; 21. T-shaped piece; 22. Positioning post; 23. Positioning hole; 24. Paper tray body; 3. Trapezoidal groove; 31. Trapezoidal piece; 32. Bidirectional screw; 4. Rotating groove; 41. Annular groove; 42. Annular block; 5. Slide groove; 6. Control motor; 7. Spherical groove; 71. Ball bearing. Detailed Implementation

[0030] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] like Figure 1-4 As shown in the figure, this application discloses a paper tray stiffness tester, including a base 1, a support rod 11, a mounting box 12, a measuring rod 13, a mounting rod 14, a contact member 15, a fixing column 16, a positioning component 2, a paper tray body 24, a trapezoidal member 31, a bidirectional screw 32, an annular block 42, and a control motor 6. The base 1 is a rectangular plate structure, and the support rod 11 is a rectangular rod structure, which is fixedly mounted on the upper surface of the base 1. The mounting box 12 is a hollow cuboid structure, which is slidably mounted on the outer wall of the support rod 11. The measuring rod 13 is mounted on the bottom surface of the mounting box 12 and is used to test the stiffness of the paper tray. A pressure sensor (not shown in the figure) is installed inside the measuring rod. The mounting rod 14 has a U-shaped cross-section and is fixedly mounted on the upper surface of the base 1. The contact member 15 has an L-shaped cross-section and is fixedly mounted on the upper surface of the mounting rod 14. The fixing post 16 is a cylindrical structure with a vertical axis, and is fixedly installed on the upper surface of the mounting rod 14.

[0032] When testing the stiffness of a paper tray, the operator places the paper tray body 24 on the fixing post 16, aligning the axis of the paper tray body 24 with the axis of the fixing post 16. Then, the operator controls the abutment 15 to abut against the upper surface of one end of the paper tray body 24. At this point, the operator moves the mounting box 12 downwards, causing the measuring rod 13 to move downwards under the action of the mounting box 12, so that the lower end of the measuring rod 13 abuts against the upper surface of the paper tray body 24 away from the abutment 15, causing the paper tray body 24 to deform. The pressure sensor inside the measuring rod 13 records the force on the paper tray body 24 and displays it on a computer, thus completing the stiffness test of the paper tray body 24. During this process, the operator uses the positioning component 2 to place the paper tray body 24 on the upper surface of the fixing post 16, reducing the difficulty of aligning the paper tray body 24 with the fixing post 16 and thus reducing the workload.

[0033] Positioning assembly 2 is disposed on the upper surface of mounting rod 14 for positioning the paper tray. Positioning assembly 2 includes T-shaped members 21 and positioning posts 22. The cross-section of T-shaped member 21 is T-shaped. Two T-shaped members 21 are provided and slidably disposed on the upper surface of mounting rod 14. Multiple positioning holes 23 are arrayed on the upper surface of both T-shaped members 21. Positioning posts 22 are cylindrical structures with vertical axes. Four positioning posts 22 are provided and installed in the positioning holes 23. Two positioning posts 22 are respectively installed on the two T-shaped members 21. The positioning posts 22 are slidably connected to the positioning holes 23. The paper tray body 24 is disposed on the multiple positioning posts 22.

[0034] When the worker needs to place the paper tray body 24 on the upper surface of the fixing post 16, the worker places the paper tray body 24 on the upper surface of the fixing post 16. Then, the worker places the positioning posts 22 into the positioning holes 23 so that the distance between the axis of each positioning post 22 and the axis of the fixing post 16 is equal. Next, the worker slides the two T-shaped pieces 21 towards each other, so that all four fixing posts 16 abut against the side wall of the paper tray body 24. At this point, the distance between the axes of the four positioning posts 22 and the axis of the paper tray body 24 is equal, thus aligning the axis of the paper tray body 24 with the axis of the fixing post 16. This reduces the difficulty for the worker in aligning the paper tray body 24 with the fixing post 16, thereby reducing the workload.

[0035] A trapezoidal groove 3 is provided on the side wall of the mounting rod 14. Two trapezoidal parts 31 are provided and slidably disposed in the trapezoidal groove 3. The two trapezoidal parts 31 are respectively fixed to the two T-shaped parts 21. A bidirectional screw 32 is rotatably disposed in the trapezoidal groove 3 with its axis horizontal. The bidirectional screw 32 is threadedly connected to the two trapezoidal parts 31 respectively.

[0036] When the operator needs to slide the T-shaped component 21, they need to rotate the bidirectional screw 32, which causes the trapezoidal component 31 to slide closer together under the action of the bidirectional screw 32. This reduces the difficulty for the operator in sliding the T-shaped component 21, thus reducing the workload. In addition, the bidirectional screw 32 reduces the probability of the T-shaped component 21 sliding when subjected to external forces, thereby improving the stability of the device.

[0037] A rotating groove 4 is formed inside the trapezoidal groove 3, and an annular groove 41 is formed on the inner wall of the rotating groove 4. The bidirectional screw 32 is rotatably connected to the rotating groove 4. The annular block 42 is rotatably set inside the annular groove 41, and its axis coincides with the axis of the bidirectional screw 32. The annular block 42 and the bidirectional screw 32 are fixed to each other.

[0038] When the operator rotates the bidirectional screw 32, the annular block 42 rotates under the action of the bidirectional screw 32. During this process, the annular block 42 limits the movement of the bidirectional screw 32, thereby reducing the probability of the bidirectional screw 32 moving and improving the stability of the device.

[0039] The abutment member 15 includes a connecting rod 151, an abutment plate 152, and a threaded rod 153. The connecting rod 151 has a cuboid structure and is fixedly mounted on the upper surface of the mounting rod 14. A groove 5 is formed through the side wall of the connecting rod 151. The abutment plate 152 is slidably mounted in the groove 5. The threaded rod 153 is threaded through the upper surface of the connecting rod 151, with its axis vertical. The threaded rod 153 is rotatably connected to the abutment plate 152.

[0040] When the operator needs to control the contact part 15 to contact the upper surface of one end of the paper tray body 24, the operator needs to rotate the threaded rod 153, thereby causing the threaded rod 153 to move downward, so that the contact plate 152 slides downward under the action of the threaded rod 153, thereby causing the bottom surface of the contact plate 152 to contact the upper surface of the paper tray body 24.

[0041] The control motor 6 is mounted on the outer wall of the mounting box 12 and is used to control the up and down movement of the mounting box 12. A gear (not shown in the figure) is installed inside the mounting box 12, and the gear is fixed to the output shaft of the control motor 6. A rack (not shown in the figure) is installed on the outer wall of the support rod 11. The gear and the rack mesh with each other, and the control motor 6 controls the up and down movement of the mounting box 12 through the gear and the rack.

[0042] When the staff needs to move the installation box 12, the staff needs to start the control motor 6, which in turn controls the installation box 12 to move up and down, thereby reducing the difficulty for the staff to move the installation box 12 and thus reducing the difficulty of the staff's work.

[0043] To improve the practicality of the device, a spherical groove 7 is provided on the upper surface of the fixed column 16, and a ball bearing 71 is rotatably disposed in the spherical groove 7. The ball bearing 71 reduces the probability of damage to the bottom surface when the paper tray body 24 is deformed, thereby improving the practicality of the device.

[0044] To improve the practicality of the device, a rubber layer is fitted onto the lower end of the positioning post 22. Rubber has good elasticity, and the rubber layer made of rubber increases the maximum static friction between the positioning post 22 and the positioning hole 23, thereby reducing the probability of the positioning post 22 shaking during use and thus improving the stability of the device.

[0045] The operating principle of the paper tray stiffness tester in this embodiment is as follows: When the operator needs to test the stiffness of the paper tray, the operator places the paper tray body 24 on the fixed post 16, thereby aligning the axis of the paper tray body 24 with the axis of the fixed post 16. Then, the operator controls the abutment 15 to abut against the upper surface of one end of the paper tray body 24. At this time, the operator moves the mounting box 12 downwards, causing the measuring rod 13 to move downwards under the action of the mounting box 12, so that the lower end of the measuring rod 13 abuts against the upper surface of the paper tray body 24 away from the abutment 15, thereby causing the paper tray body 24 to deform. At this time, the pressure sensor inside the measuring rod 13 records the force on the paper tray body 24 and displays it on the computer, thus completing the stiffness test of the paper tray body 24. During this process, the operator places the paper tray body 24 on the upper surface of the fixed post 16 using the positioning component 2, thereby reducing the difficulty of aligning the paper tray body 24 with the fixed post 16 and reducing the workload of the operator.

[0046] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A paper tray stiffness tester, comprising a base (1), characterized in that: A support rod (11) is fixedly provided on the upper surface of the base (1). An installation box (12) is slidably provided on the outer wall of the support rod (11). A measuring rod (13) for testing the stiffness of the paper tray is provided on the bottom surface of the installation box (12). An installation rod (14) with a U-shaped cross-section is fixedly provided on the upper surface of the base (1). An abutment (15) with an L-shaped cross-section is fixedly provided on the upper surface of the installation rod (14). A fixing column (16) is fixedly provided on the upper surface of the installation rod (14). A positioning component (2) for positioning the paper tray is provided on the upper surface of the installation rod (14).

2. The paper tray stiffness tester according to claim 1, characterized in that: The positioning component (2) includes two T-shaped pieces (21) slidably disposed on the upper surface of the mounting rod (14). The upper surfaces of the two T-shaped pieces (21) are provided with a plurality of positioning holes (23). The positioning component (2) also includes four positioning posts (22) installed in the positioning holes (23). Two positioning posts (22) are respectively installed on the two T-shaped pieces (21). The positioning posts (22) are slidably connected to the positioning holes (23). The paper tray body (24) is provided on the plurality of positioning posts (22).

3. The paper tray stiffness tester according to claim 2, characterized in that: The mounting rod (14) has a trapezoidal groove (3) on its side wall. Two trapezoidal parts (31) are slidably arranged in the trapezoidal groove (3). The two trapezoidal parts (31) are fixed to two T-shaped parts (21) respectively. A bidirectional screw (32) is rotatably arranged in the trapezoidal groove (3). The bidirectional screw (32) is threadedly connected to the two trapezoidal parts (31) respectively.

4. The paper tray stiffness tester according to claim 3, characterized in that: A rotating groove (4) is provided in the trapezoidal groove (3), and an annular groove (41) is provided on the inner wall of the rotating groove (4). The bidirectional screw (32) is rotatably connected to the rotating groove (4), and an annular block (42) is rotatably provided in the annular groove (41). The annular block (42) is fixed to the bidirectional screw (32).

5. The paper tray stiffness tester according to claim 1, characterized in that: The abutment (15) includes a connecting rod (151) fixedly disposed on the upper surface of the mounting rod (14), and a sliding groove (5) is provided through the side wall of the connecting rod (151). The abutment (15) also includes an abutment plate (152) slidably disposed in the sliding groove (5) and a threaded rod (153) threaded through the upper surface of the connecting rod (151). The threaded rod (153) is rotatably connected to the abutment plate (152).

6. The paper tray stiffness tester according to claim 1, characterized in that: The outer wall of the mounting box (12) is provided with a control motor (6) for controlling the up and down movement of the mounting box (12).

7. The paper tray stiffness tester according to claim 1, characterized in that: The upper surface of the fixed column (16) is provided with a spherical groove (7), and a ball bearing (71) is rotatably disposed in the spherical groove (7).

8. A paper tray stiffness tester according to claim 2, characterized in that: The lower end of the positioning post (22) is fitted with a rubber layer.

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