Testing device for lapping plate production

Abstract

The utility model discloses a testing device for fine grinding plate production, and relates to the technical field of fine grinding plate testing. The device comprises two supporting plates, a top plate is fixedly installed at the top ends of the supporting plates, a hydraulic cylinder is fixedly installed at the top end of the top plate, the driving end of the hydraulic cylinder penetrates through the top plate, an installation base is fixedly installed at the driving end of the hydraulic cylinder, and a pressure sensor is arranged at the bottom end of the installation base. The bottom end of the pressure sensor is provided with a pressing plate, a supporting table is fixedly installed between the supporting plates, the bottom face of the supporting table is flush with the bottom faces of the supporting plates, the top end of the supporting table is provided with two sets of fixing plates which are symmetrically distributed, and the tops of the fixing plates are rotationally connected with placing rods. A double-thread screw with opposite threads at two ends rotationally penetrates through each group of fixing plates; according to the utility model, the lapping plate is limited, and the condition that the reliability of the test result of the lapping plate is influenced due to the displacement of the lapping plate when the lapping plate is pressed is avoided.

Description

Technical Field

[0001] This utility model relates to the field of precision grinding board testing technology, specifically a testing device for precision grinding board production. Background Technology

[0002] Finely ground board is a type of board material that has undergone fine grinding, primarily used to improve its surface quality and performance. Finely ground boards typically refer to boards that have undergone multiple processing steps, such as lamination, veneer, and baking paint, to enhance their durability, stability, and aesthetics. During the production of finely ground boards, testing is usually required. However, during testing, the boards are placed directly on two symmetrically distributed support bases without any limiting structures. This causes displacement of the board under pressure during stress testing, affecting the reliability of the test results and making it impossible to accurately reflect the board's true compressive strength. Furthermore, it is difficult to align the center of the board with the center of the pressure plate during placement, further impacting the accuracy of the test results. Utility Model Content

[0003] To address the issues of the grinding plate shifting under pressure during testing and the inability to align its center with the center of the pressure plate during placement, this invention aims to provide a testing device for grinding plate production.

[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a testing device for precision grinding plate production, comprising two support plates, a top plate fixedly installed at the top of the support plates, a hydraulic cylinder fixedly installed at the top of the top plate, the driving end of the hydraulic cylinder penetrating through the top plate, a mounting base fixedly installed at the driving end of the hydraulic cylinder, a pressure sensor provided at the bottom of the mounting base, a pressure plate provided at the bottom of the pressure sensor, a support platform fixedly installed between the support plates, the bottom surface of the support platform being flush with the bottom surface of the support plates, and two symmetrically distributed... The system comprises a set of fixed plates, with a placement rod rotatably connected to the top of each fixed plate. Each set of fixed plates is rotatably permeated by a double-ended screw with opposite threads at both ends. Two symmetrically distributed limiting blocks are threaded onto the outer sides of the double-ended screws. A first limiting rod is fixedly installed between each set of fixed plates. The limiting blocks are slidably fitted around the outside of the first limiting rods. A first rotating wheel is fixedly installed at the front end of each double-ended screw. A circular groove, larger in diameter than the placing rod, is formed through the top of each limiting block to engage with the placement rod. The hydraulic cylinder and pressure sensor are both connected to an external controller.

[0005] Preferably, a positioning plate is fixedly installed on the side of each set of fixing plates near the support plate, and the positioning plate and the limiting block are at the same height.

[0006] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0007] 1. This application achieves the limitation of the grinding plate, which prevents the grinding plate from displacing under pressure, thus affecting the reliability of the grinding plate test results;

[0008] 2. This application ensures that the center of the grinding plate is always aligned with the center of the pressure plate when the grinding plate is placed, thus avoiding uneven stress on the grinding plate due to eccentricity, which would affect the accuracy of the test results. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 This is a schematic diagram of the connection structure between the double-headed screw and the limiting block in this utility model.

[0012] Figure 3 This is a schematic diagram of the connection structure between the threaded rod and the positioning plate in this utility model.

[0013] Figure 4 This is a schematic diagram of the connection structure between the support platform and the placement groove in this utility model.

[0014] In the diagram: 1. Support plate; 11. Top plate; 12. Hydraulic cylinder; 13. Mounting base; 14. Pressure sensor; 15. Pressure plate; 16. Support platform; 17. Fixing plate; 18. Placement rod; 2. Double-ended screw; 21. Limiting block; 22. First limiting rod; 23. First rotating wheel; 24. Circular groove; 3. Positioning plate; 31. Threaded rod; 32. Second rotating wheel; 33. Second limiting rod; 34. Connecting block; 35. L-shaped pointer; 36. Scale; 4. Baffle; 5. Rubber pad; 6. Placement groove; 7. Transparent door; 71. Side plate. Detailed Implementation

[0015] 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 some embodiments of the present utility model, and not all embodiments. 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.

[0016] Example: Figure 1-4 As shown, this utility model provides a testing device for precision grinding plate production, including two support plates 1. A top plate 11 is fixedly installed on the top of the support plate 1. A hydraulic cylinder 12 is fixedly installed on the top of the top plate 11. The driving end of the hydraulic cylinder 12 passes through the top plate 11. A mounting base 13 is fixedly installed on the driving end of the hydraulic cylinder 12. A pressure sensor 14 is provided at the bottom of the mounting base 13. A pressure plate 15 is provided at the bottom of the pressure sensor 14. A support platform 16 is fixedly installed between the support plates 1. The bottom surface of the support platform 16 is flush with the bottom surface of the support plate 1. Two sets of fixed plates 17 are symmetrically distributed at the top of the support platform 16. A placement rod 18 is rotatably connected to the top of the fixed plate 17.

[0017] Each set of fixing plates 17 is rotatably connected to a double-ended screw 2 with opposite threads at both ends. The outer threads of the double-ended screw 2 are connected to two symmetrically distributed limiting blocks 21. A first limiting rod 22 is fixedly installed between each set of fixing plates 17. The limiting block 21 slides around the outside of the first limiting rod 22. A first rotating wheel 23 is fixedly installed at the front end of the double-ended screw 2. A circular groove 24 for cooperating with the placement rod 18 is opened through the top of the limiting block 21. The diameter of the circular groove 24 is larger than the diameter of the placement rod 18. The hydraulic cylinder 12 and the pressure sensor 14 are both connected to an external controller. The connection wire of the pressure sensor 14 passes through a circular hole on one of the support plates 1. The controller used is a PLC controller.

[0018] Each set of fixing plates 17 has a positioning plate 3 fixedly installed on the side near the support plate 1. The positioning plate 3 and the limiting block 21 are at the same height.

[0019] A threaded rod 31 is fixedly installed on the side of the positioning plate 3 away from the corresponding fixed plate 17. The threaded rod 31 is threadedly connected to the support plate 1. A second rotating wheel 32 is fixedly installed on the end of the threaded rod 31 away from the positioning plate 3. Two symmetrically distributed second limiting rods 33 are fixedly installed on the side of the positioning plate 3 close to the threaded rod 31. The second limiting rods 33 are slidably connected to the support plate 1. By setting the threaded rod 31, when pressure testing is performed on precision grinding plates of different lengths, the two second rotating wheels 32 are rotated respectively, which drives the corresponding threaded rod 31 and the positioning plate 3 to rotate. Due to the limiting of the positioning plate 3 by the second limiting rod 33, the positioning plate 3 and the fixed plate 17 move forward. When the distance between the two positioning plates 3 is consistent with the length of the precision grinding plate, the rotation of the second rotating wheel 32 stops, thereby realizing the placement of precision grinding plates of different lengths. In actual use, the length of the threaded rod 31 is longer than the length of the second limiting rod 33.

[0020] Connecting blocks 34 are fixedly installed on the outside of the two second limiting rods 33 on the front side. An L-shaped pointer 35 is fixedly installed on the front side of the connecting block 34. The L-shaped pointer 35 is located at the bottom of the connecting block 34. A scale 36 that works with the L-shaped pointer 35 is fixedly installed on the upper surface of the support platform 16. By setting the L-shaped pointer 35 and the scale 36, when the second limiting rod 33 on the front side moves, it drives the connecting block 34 and the L-shaped pointer 35 to move. Then, by observing the position of the L-shaped pointer 35 on the scale 36, it is clearer where the positioning plate 3 needs to be moved. The distance between the two positioning plates 3 is consistent with the length of the fine grinding plate.

[0021] Each set of fixing plates 17 has a baffle 4 fixedly installed on the side away from the positioning plate 3. The height of the baffle 4 is slightly lower than the height of the fixing plate 17. By setting the baffle 4, it is prevented that when the pressure plate 15 is pressure tested on the fine grinding plate, the broken fine grinding plate will splash onto the threads of the double-ended screw 2, thereby affecting the movement of the double-ended screw 2 and the limit block 21.

[0022] Each fixed plate 17 has a rubber pad 5 fixedly installed at its bottom end. The rubber pad 5 fits against the support platform 16. By setting the rubber pad 5, the bottom surface of the fixed plate 17 is prevented from directly contacting the top surface of the support platform 16, which would cause noise and pollute the working environment when the fixed plate 17 moves with the positioning plate 3.

[0023] The upper surface of the support platform 16 is provided with a placement groove 6. The width of the placement groove 6 is slightly smaller than the distance between the two vertical fixed plates 17. By setting the placement groove 6, when the grinding plate is subjected to pressure test, the collection box is first placed in the placement groove 6, so that the grinding plate can be collected after it is broken during the pressure test.

[0024] One of the support plates 1 has a transparent door 7 made of polycarbonate sheet (PC board) hinged to its front side. A side plate 71 is fixedly installed on the side of both support plates 1 away from the transparent door 7. By setting up the transparent door 7 and the side plate 71, the broken polished plate is prevented from flying and injuring people when pressure testing is performed, thus ensuring the personal safety of the operators. The reason for choosing polycarbonate sheet (PC board) for transparent door 7 is its good toughness: polycarbonate sheet has extremely high toughness, commonly known as "unbreakable glass". It can withstand large deformations without breaking and has a strong resistance to the impact of the broken polished plate. It can effectively prevent the fragments from damaging the door and is lightweight. Alternatively, other materials can be selected for transparent door 7.

[0025] Working principle: In actual use, open the transparent door 7, then place the two ends of the grinding plate to be pressure tested against the inner walls of the two positioning plates 3, and make the bottom surface of the grinding plate against the placement rod 18. Then rotate the two first rotating wheels 23 respectively, driving the corresponding double-headed screws 2 and the limiting block 21 to rotate. Since the first limiting rod 22 limits the limiting block 21, the limiting block 21 can only move to both sides of the grinding plate, so that the inner wall of the limiting block 21 is against the grinding plate. It does not need to be fully clamped. Then close the transparent door 7.

[0026] Subsequently, the hydraulic cylinder 12 and pressure sensor 14 are activated by an external controller. The activation of the hydraulic cylinder 12 pushes the mounting base 13, pressure sensor 14, and pressure plate 15 downwards. The pressure plate 15 gradually contacts the grinding plate and applies pressure to it. As the hydraulic cylinder 12 continues to press down, the pressure gradually increases, simulating the pressure conditions that the grinding plate may withstand in actual use. During the process of the pressure plate 15 applying pressure to the grinding plate, the pressure sensor 14 senses the pressure magnitude in real time and converts the pressure signal into an electrical signal, which is transmitted to the external controller. The external controller processes and displays the pressure data, and the tester can directly read the current pressure value and observe the state of the grinding plate under different pressures. After the test is completed, the transparent door 7 is opened, and the tested grinding plate can be taken out.

[0027] When pressure testing is required on the precision grinding plate of length and width, there is no need to readjust the distance between the limit blocks 21; simply place it on the plate. The size of the pressure testing device can be selected according to the actual situation.

[0028] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A testing device for lapping plate production, comprising two support plates (1), characterized in that: The top end of the support plate (1) is fixedly installed with a top plate (11), the top end of the top plate (11) is fixedly installed with a hydraulic cylinder (12), the driving end of the hydraulic cylinder (12) penetrates through the top plate (11), the driving end of the hydraulic cylinder (12) is fixedly installed with a mounting seat (13), the bottom end of the mounting seat (13) is provided with a pressure sensor (14), the bottom end of the pressure sensor (14) is provided with a pressing plate (15), the support plates (1) are fixedly installed with a support table (16), the bottom surface of the support table (16) is flush with the bottom surface of the support plate (1), the top end of the support table (16) is provided with two groups of fixed plates (17) which are symmetrically distributed, the top of the fixed plate (17) is rotatably connected with a placing rod (18). Each group of the fixed plate (17) is rotatably penetrated by a double-headed screw rod (2) with opposite threads at two ends, the outer side of the double-headed screw rod (2) is threadedly connected with two limit blocks (21) which are symmetrically distributed, each group of the fixed plate (17) is fixedly installed with a first limiting rod (22) between them, the limit block (21) is slidably sleeved on the outside of the first limiting rod (22), the front end of the double-headed screw rod (2) is fixedly installed with a first rotating wheel (23), the top of the limit block (21) penetrates a circular groove (24) which is used in cooperation with the placing rod (18), the diameter of the circular groove (24) is greater than the diameter of the placing rod (18), the hydraulic cylinder (12) and the pressure sensor (14) are connected with an external controller.

2. A testing device for lapping plate production as claimed in claim 1, characterized in that Each group of the fixed plate (17) is fixedly installed with a positioning plate (3) on the side close to the support plate (1), the height of the positioning plate (3) is consistent with that of the limit block (21).

3. A testing device for lapping plate production as claimed in claim 2, characterized in that The positioning plate (3) is fixedly installed with a threaded rod (31) on the side away from the corresponding fixed plate (17), the threaded rod (31) is threadedly connected with the support plate (1), one end of the threaded rod (31) away from the positioning plate (3) is fixedly installed with a second rotating wheel (32), the positioning plate (3) is fixedly installed with two second limiting rods (33) which are symmetrically distributed on the side close to the threaded rod (31), the second limiting rod (33) is slidably connected with the support plate (1).

4. A testing device for lapping plate production as claimed in claim 3, characterized in that The outer sides of the two second limiting rods (33) on the front side are each fixedly installed with a connecting block (34), the front side of the connecting block (34) is fixedly installed with an L-shaped pointer (35), the L-shaped pointer (35) is located at the bottom of the connecting block (34), the upper surface of the support table (16) is fixedly installed with a scale (36) which is used in cooperation with the L-shaped pointer (35).

5. The testing device for lapping plate production as recited in claim 2, wherein Each group of the fixed plate (17) is fixedly installed with a baffle (4) on the side away from the positioning plate (3), the height of the baffle (4) is slightly lower than that of the fixed plate (17).

6. The testing device for lapping plate production as recited in claim 1, wherein, The bottom end of each fixed plate (17) is fixedly installed with a rubber pad (5), the rubber pad (5) is attached to the support table (16).

7. The testing device for lapping plate production as recited in claim 1, wherein The upper surface of the support table (16) is provided with a placing groove (6), the width of the placing groove (6) is slightly smaller than the distance between the two vertical fixed plates (17).

8. The testing device for lapping plate production as recited in claim 1, wherein, The front side of one of the support plates (1) is hingedly connected with a transparent door (7) made of polycarbonate plate (PC plate) material, and two of the support plates (1) are fixedly installed with a side plate (71) on the side away from the transparent door (7).

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