Pressure testing equipment for high-density and high-resilience polyurethane foam
By designing a pressure testing equipment that includes components such as base, support plate, cylinder, etc., the problem that existing devices cannot test single-layer foam and adapt to foams of different sizes is solved, and efficient and accurate compression rate testing is achieved.
Patent Information
- Application Number
- CN202421935994.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-08-09
AI Technical Summary
The existing foam compression ratio testing device is not suitable for single-layer foam and is difficult to adapt to the test of different sizes of foam, resulting in large errors in measurement data.
A pressure testing equipment including a base, support plate, cylinder, pressure plate, fixing plate, track, connecting rod, adjustment plate and transmission gear is designed. Through the coordination of the adjustment plate and the cylinder, the single-layer foam is tested and adapted to the test of different sizes of foam.
A uniform compression test of single-layer foam is achieved, reducing measurement errors and improving the adaptability and convenience of the test.
Smart Images
Figure CN223229377U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of polyurethane foam, in particular to a pressure testing device for high-density and high-elasticity polyurethane foam. Background Art
[0002] Foam is a polymer made primarily of isocyanate and polyether, mixed with various additives such as blowing agents, catalysts, and flame retardants, using specialized equipment and then foamed on-site via high-pressure spraying. Currently, when testing the compression rate of foam using testing equipment in the foam industry, this is typically done by stacking multiple layers of foam before testing. This multi-layer stacking method results in uneven stress on the object being tested, leading to errors in the measured data. The stress values generated by this uneven deformation differ, and can even differ significantly, from the stress values generated by a single piece of foam under the same compression ratio.
[0003] Most foam compression rate testing devices in the prior art are suitable for testing multi-layer stacked foam. Since the compression value generated by multi-layer stacking is different from the compression value generated by a single layer of foam, this testing device is not suitable for testing a single layer of foam and cannot adapt to the testing of foams of different sizes. Summary of the Invention
[0004] The technical problem to be solved by the utility model is to provide a pressure testing device for high-density and high-resilience polyurethane foam to solve the above problems.
[0005] The technical solution of the utility model for solving the above technical problems is: a pressure testing device for high-density and high-resilience polyurethane foam, comprising a base, which is connected to a first cylinder through a support plate, a pressure plate is connected to the lower side of the first cylinder, a fixing plate is fixedly installed on the upper side of the base, tracks are respectively provided on both sides of the fixing plate on the base, the tracks are connected to the adjustment plate through a connecting rod, the lower side of the connecting rod is respectively connected to the adjustment rod through an adjustment block, the adjustment rod is connected to the transmission gear through a gear rod, the transmission gear is connected to the rotating shaft, a fixing block is provided on the opposite side of the fixing plate, and the fixing block is connected to the second push plate through a screw.
[0006] As an optimal technical solution of the present invention, a second cylinder is provided on both sides of the fixed plate on the base, the second cylinder is connected to the first push plate, and the through hole on the adjustment plate is movably connected to the push rod of the second cylinder.
[0007] As a preferred technical solution of the present invention, the two gear rods are axially symmetrical about the central axis of the transmission gear.
[0008] As a preferred technical solution of the present invention, the minimum distance between the two adjustment plates is greater than or equal to the length of the pressing plate.
[0009] As a preferred technical solution of the present invention, the minimum distance between the fixed plate and the second push plate is greater than or equal to the width of the pressing plate.
[0010] As a preferred technical solution of the present invention, scale lines are provided on the fixed plate.
[0011] As a preferred technical solution of the present invention, a controller is installed on the base, and an optical lens is installed on the edge of the support plate.
[0012] Since the utility model adopts such a structure, it has the following beneficial effects:
[0013] 1. Through the adjustment in left and right, front and back directions, it can be applied to test single-layer foam and also adapt to the testing of foams of different sizes;
[0014] 2. The second cylinder drives the first push plate to push the polyurethane foam, thereby performing a horizontal pressure test on the polyurethane foam. It is convenient, efficient and practical to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a front view of a pressure testing device for high-density and high-resilience polyurethane foam of the present invention.
[0016] Figure 2 It is a structural diagram of the transmission gear and gear rod.
[0017] In the figure: 1 is the base, 2 is the support plate, 3 is the pressure plate, 4 is the fixed plate, 5 is the second cylinder, 6 is the first push plate, 7 is the screw, 8 is the fixed block, 9 is the transmission gear, 10 is the gear rod, 11 is the adjusting rod, 12 is the adjusting block, 13 is the adjusting plate, 14 is the second push plate, 15 is the rotating shaft, and 16 is the optical lens. DETAILED DESCRIPTION
[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0019] like Figures 1 and 2As shown, the utility model is a pressure testing device for high-density and high-resilience polyurethane foam, including a base 1, which is connected to the first cylinder through a support plate 2, and a pressure plate 3 is connected to the lower side of the first cylinder. A fixing plate 4 is fixedly installed on the upper side of the base 1, and tracks are opened on both sides of the fixing plate 4 on the base 1, and the tracks are connected to the adjustment plate 13 through a connecting rod, and the lower side of the connecting rod is connected to the adjusting rod 11 through an adjusting block 12, and the adjusting rod 11 is connected to the transmission gear 9 through a gear rod 10, and the transmission gear 9 is connected to the rotating shaft 15. A fixing block 8 is provided on the opposite side of the fixing plate 4, and the fixing block 8 is connected to the second push plate 14 through a screw 7. By rotating the transmission gear 9 through the rotating shaft 15, the gear rod 10, the adjusting rod 11, the adjusting block 12, the connecting rod and the adjusting plate 13 are moved left and right, thereby realizing left and right adjustment; by rotating the screw rod 7, the second push plate 14 is driven to move, thereby realizing front and back adjustment. The testing equipment of the utility model can be applied to testing single-layer foam, and can also adapt to the testing of foams of different sizes. It is convenient, efficient and practical to use.
[0020] The present invention further features a second cylinder 5 located on either side of the fixed plate 4 on the base 1. The second cylinder 5 is connected to a first push plate 6, and a through-hole on the adjustment plate 13 is movably connected to the push rod of the second cylinder 5. When the pressure resilience of the left and right sides needs to be tested, the adjustment plates 13 on either side remain stationary, and the second cylinder 5 drives the first push plate 6 to push the polyurethane foam, thereby performing a horizontal pressure test on the polyurethane foam. This makes the device convenient, efficient, and practical.
[0021] Furthermore, the two gear rods 10 are symmetrical about the central axis of the transmission gear 9. The two gear rods 10 symmetrical about the central axis of the transmission gear 9 are more stable.
[0022] The present invention further has a minimum spacing between the two adjustment plates 13 that is greater than or equal to the length of the pressing plate 3. This can prevent the pressing plate 3 from being unable to press down on the polyurethane foam due to the two adjustment plates 13 being too close when testing small-sized polyurethane foam, and has good practicality.
[0023] Furthermore, the minimum distance between the fixed plate 4 and the second push plate 14 is greater than or equal to the width of the pressing plate 3. This can prevent the pressing plate 3 from being unable to press down on the polyurethane foam due to the second push plate 14 being too close to the fixed plate 4 when testing small-sized polyurethane foam, which is practical.
[0024] The present invention further provides scale lines on the fixing plate 4. The position where the polyurethane foam rebounds to the scale lines can reflect the resilience of the polyurethane foam.
[0025] The present invention further comprises a controller mounted on the base 1 and an optical lens 16 mounted on the edge of the support plate 2. The controller is electrically connected to the first cylinder, the second cylinder 5, and the optical lens 16. The controller controls the operation of the first cylinder, the second cylinder 5, and the optical lens 16, respectively, thereby maintaining objectivity in the data of the polyurethane foam pressure test.
[0026] The description and application of the present invention here are illustrative and are not intended to limit the scope of the present invention to the above-described embodiments. Variations and changes to the embodiments disclosed herein are possible, and actual replacements of the embodiments and various equivalent components are well known to those of ordinary skill in the art. It should be clear to those skilled in the art that the present invention can be implemented in other forms, structures, arrangements, proportions, and with other elements, materials, and components without departing from the spirit or essential characteristics of the present invention. Other variations and changes can be made to the embodiments disclosed herein without departing from the spirit or essential characteristics of the present invention.
Claims
1. A pressure testing device for high-density and high-resilience polyurethane foam, comprising a base (1), characterized by: The base (1) is connected to the first cylinder through a support plate (2), a pressure plate (3) is connected to the lower side of the first cylinder, a fixed plate (4) is fixedly installed on the upper side of the base (1), tracks are respectively provided on both sides of the fixed plate (4) on the base (1), the tracks are connected to the adjustment plate (13) through a connecting rod, the lower side of the connecting rod is respectively connected to the adjustment rod (11) through an adjustment block (12), the adjustment rod (11) is connected to the transmission gear (9) through a gear rod (10), and the transmission gear (9) is connected to the rotating shaft (15), a fixed block (8) is provided on the opposite side of the fixed plate (4), and the fixed block (8) is connected to the second push plate (14) through a screw rod (7).
2. The pressure testing device for high-density and high-resilience polyurethane foam according to claim 1, characterized in that: The base (1) is provided with a second cylinder (5) on both sides of the fixed plate (4), the second cylinder (5) is connected to the first push plate (6), and the through hole on the adjustment plate (13) is movably connected to the push rod of the second cylinder (5).
3. The pressure testing device for high-density and high-resilience polyurethane foam according to claim 1, characterized in that: The two gear rods (10) are axially symmetrical about the central axis of the transmission gear (9).
4. The pressure testing device for high-density and high-resilience polyurethane foam according to claim 1, characterized in that: The minimum distance between the two adjustment plates (13) is greater than or equal to the length of the pressing plate (3).
5. The pressure testing device for high-density and high-resilience polyurethane foam according to claim 1, characterized in that: The minimum distance between the fixed plate (4) and the second push plate (14) is greater than or equal to the width of the pressing plate (3).
6. The pressure testing device for high-density and high-resilience polyurethane foam according to claim 1, characterized in that: The fixed plate (4) is provided with scale lines.
7. The pressure testing device for high-density and high-resilience polyurethane foam according to claim 1, characterized in that: A controller is mounted on the base (1), and an optical lens (16) is mounted on the edge of the support plate (2).