Compression springback testing device

Abstract

The utility model discloses a compression resilience testing device, which belongs to the technical field of foaming material detection equipment and comprises a telescopic component, a pressing component, a supporting component and a control unit. The telescopic assembly is vertically arranged on the supporting assembly, and the lower end of the telescopic assembly is a telescopic end; the downward pressing assembly is arranged at the telescopic end of the telescopic assembly and comprises a weight block connected with the telescopic end and a pressing head arranged at the bottom of the weight block. The pressure head is positioned above the tested product; the control unit is arranged on the supporting assembly and electrically connected with the telescopic assembly. According to the utility model, the standard weight block is adopted, manual pressing is replaced by cylinder driving, manual operation is not needed, the lifting of the cylinder is controlled by the control unit, the magnitude of the acting force can be standardized, and the testing precision of the springback time is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of foaming material testing equipment, and particularly relates to a compression and resilience testing device. Background Art

[0002] In the resilience test, the resilience time is a resilience parameter for testing foaming materials. The principle is to apply an external force to the foam body to cause deformation, and then observe the resilience of the product after removing the external force. The time required for the product to completely return to the state before pressing is the resilience time of the product.

[0003] The traditional method for testing the resilience time is mostly manual testing. After the foam products are produced, the on-site inspectors press the foam by hand and then count approximately the number of seconds required for the product to completely return to the state before pressing.

[0004] However, the existing manual testing methods have many drawbacks. For example, the same inspector cannot ensure that the pressing force is the same each time, and different inspectors have different pressing forces, so the deformation of the product is inconsistent; moreover, the resilience time is counted by the inspector, which is not standardized and there are perception biases. Therefore, the traditional method cannot guarantee the testing accuracy of the resilience time. Content of the Utility Model

[0005] In view of one or more of the above defects or improvement requirements of the prior art, the utility model provides a compression and resilience testing device, which improves the testing accuracy of the resilience time.

[0006] To achieve the above object, the utility model provides a compression and resilience testing device, which includes a telescopic component, a downward pressing component, a supporting component and a control unit;

[0007] The telescopic component is vertically arranged on the supporting component, and the lower end of the telescopic component is a telescopic end;

[0008] The downward pressing component is arranged at the telescopic end of the telescopic component. The downward pressing component includes a weight block connected to the telescopic end and a pressing head arranged at the bottom of the weight block; the pressing head is located above the product to be tested;

[0009] The control unit is arranged on the supporting component and is electrically connected to the telescopic component.

[0010] As a further improvement of the utility model, a laser emitter is arranged in the pressing head, which is directly opposite to the product to be tested; the laser emitter is electrically connected to the control unit.

[0011] As a further improvement of the utility model, the telescopic component is a telescopic cylinder, which includes a cylinder and a cylinder rod arranged below it; the cylinder is connected to the supporting component, and the cylinder rod is connected to the weight block.

[0012] As a further improvement of the present utility model, the support assembly includes a bracket and a test base provided at the bottom of the bracket, and the test base is used for placing the product to be tested; the telescopic assembly and the control unit are provided on the bracket.

[0013] As a further improvement of the present utility model, the bracket includes a top bracket, a middle bracket and a side bracket, the top bracket, the middle bracket and the test base are arranged in sequence from top to bottom, and are connected by the side bracket;

[0014] The top bracket is used for supporting the telescopic assembly; the middle bracket is used for supporting the weight block.

[0015] As a further improvement of the present utility model, a through-hole structure matching the weight block is provided at the end of the middle bracket to limit the weight block.

[0016] As a further improvement of the present utility model, the thickness of the weight block is greater than the thickness of the through-hole structure.

[0017] As a further improvement of the present utility model, the control unit is a control and display system, and the control and display system is provided on the side bracket.

[0018] As a further improvement of the present utility model, the weight block and the cylinder rod are detachably connected.

[0019] As a further improvement of the present utility model, the weight blocks of different weights and sizes are replaced according to different products to be tested.

[0020] Generally speaking, compared with the prior art by the above technical solutions conceived by the present utility model, the following beneficial effects are obtained:

[0021] (1) For the compression and rebound test device of the present utility model, standard weight blocks are adopted, and the pressing is driven by a cylinder instead of manual operation. The lifting of the cylinder is controlled by the control unit, which can standardize the magnitude of the acting force and improve the test accuracy of the rebound time.

[0022] (2) For the compression and rebound test device of the present utility model, a laser emitter is provided in the indenter. After the indenter presses the product to be tested, the distance can be measured directly opposite the pressing part and compared with the initial distance. When the measured distance is the same as the initial distance, it can be determined that the product to be tested has recovered to the initial thickness. By using the laser emitter instead of the human eye to observe, the test accuracy of the rebound time can be further improved. By controlling the timing of the rebound time by the control unit, the test accuracy of the rebound time is improved.

[0023] (3)The compression and rebound test device of the present utility model can ensure the stability of the weight block during movement by setting a support structure for the weight block and restricting the lifting and moving range of the weight block within the through-hole structure.

[0024] (4)In the compression and rebound test device of the present utility model, the weight block and the cylinder rod are detachably connected, and different weight blocks with different weights can be replaced according to different products to be tested, improving the adaptability of the test device to different products. Description of the Drawings

[0025] Figure 1 It is a side view of the compression and rebound test device according to an embodiment of the present utility model;

[0026] Figure 2 It is a front view of the compression and rebound test device according to an embodiment of the present utility model in the descending state;

[0027] Figure 3 It is a front view of the compression and rebound test device according to an embodiment of the present utility model in the ascending state.

[0028] In all the drawings, the same reference numerals represent the same technical features, specifically: 1, bracket; 2, test base; 3, cylinder; 4, cylinder rod; 5, weight block; 6, laser emitter; 7, product to be tested; 8, control and display system. Detailed Embodiments

[0029] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0030] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model 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 to the present utility model.

[0031] 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 at least one such feature. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0032] In the present utility model, unless otherwise clearly defined and limited, terms such as "installed", "connected", "joined", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; 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 or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The compression and rebound test device of the embodiment of the present utility model includes a telescopic assembly, a downward pressing assembly, a support assembly and a control unit; wherein the telescopic assembly is vertically arranged on the support assembly to achieve vertical telescoping, and the lower end of the telescopic assembly is a telescopic end; the downward pressing assembly is arranged at the telescopic end of the telescopic assembly, which includes a weight block 5 connected to the telescopic end and a pressing head arranged at the bottom of the weight block 5. The downward pressing assembly is located above the product 7 to be tested and is used to press down the product 7 to be tested under the action of the telescopic assembly; the control unit is arranged on the support assembly and is electrically connected to the telescopic assembly.

[0035] The present utility model adopts a standard weight block and drives a cylinder to replace manual pressing. It does not require manual operation. By controlling the lifting of the cylinder through the control unit, the magnitude of the acting force can be standardized, and the test accuracy of the rebound time is improved.

[0036] In a preferred embodiment, a laser emitter 6 is arranged inside the pressing head, which faces the product 7 to be tested and is used to measure the distance from the product 7 to be tested, so as to determine whether the product 7 to be tested has returned to the initial thickness. The laser emitter 6 is electrically connected to the control unit.

[0037] In the compression and rebound test device of the present utility model, a laser emitter is provided inside the indenter. After the indenter presses the product to be tested, it can measure the distance directly opposite the pressed part and compare it with the initial distance. When the measured distance is the same as the initial distance, it can be determined that the product to be tested has returned to the initial thickness. By replacing manual visual observation with a laser emitter, the test accuracy of the rebound time can be further improved.

[0038] In a preferred embodiment, the telescopic assembly is a telescopic cylinder, including a cylinder 3 and a cylinder rod 4 provided below it. The cylinder 3 is connected to the support assembly, and the cylinder rod 4 is connected to the weight block 5. The cylinder 3 is used to drive the cylinder rod 4 to telescopically move vertically, so as to drive the weight block 5 to rise and fall, so that when it descends, it contacts the product to be tested 7 and applies a compression force to the product to be tested 7. After reaching the set pressure application time, it drives the weight block 5 to rise and separates from the product to be tested 7. Of course, other implementation methods of linear movement can also be selected for the telescopic assembly, as long as the vertical linear movement of the weight block 5 and the indenter can be achieved.

[0039] In a preferred embodiment, the support assembly includes a bracket 1 and a test base 2 provided at the bottom of the bracket 1, forming an integrated support structure. The bracket 1 is used to support the telescopic assembly and the downward pressing assembly, and the test base 2 serves as the bottom plate of the entire test device and is used to place the product to be tested 7 so that the product to be tested 7 is located directly below the downward pressing assembly.

[0040] More preferably, the bracket 1 includes a top bracket, a middle bracket, and a side bracket. The top bracket, the middle bracket, and the test base 2 are arranged in sequence from top to bottom and are connected by the side bracket. The top bracket is used to support the telescopic assembly. In the embodiment shown in the drawing, the cylinder 3 is connected below the top bracket; the middle bracket is used to support the weight block 5, and a through-hole structure matching the weight block 5 is provided at the end of the middle bracket. Under the telescopic action of the telescopic assembly, the weight block 5 can move vertically along the through-hole structure, thereby limiting the weight block 5 and ensuring its stability during the movement process. More specifically, the thickness (vertical height) of the weight block 5 is greater than the thickness (vertical height) of the through-hole structure, which can ensure that the weight block 5 is always located inside the through-hole structure during the movement process, further ensuring the stability of the weight block 5 during the movement process.

[0041] In a preferred embodiment, the control unit is a control and display system 8. More preferably, the control and display system 8 is provided on the side bracket. The control and display system 8 is electrically connected to the telescopic assembly and the laser emitter 6, and is used to control the telescopic speed, time, etc. of the telescopic assembly, so as to control the pressure application time of the weight block 5 on the product to be tested 7, and can receive the distance detected by the laser emitter 6 in real time, stop timing when the thickness of the product to be tested returns to the initial thickness, so as to obtain the rebound time corresponding to the product to be tested, and preferably display it through the display system.

[0042] It should be noted that in the test device of the present utility model, the weight block 5 applies pressure to the product under test 7 by its own weight, causing the product to be compressed and deformed. Different weight blocks 5 with different weights can be replaced according to different products under test. At the same time, the weight block 5 and the cylinder rod 4 are detachably connected, such as by bolts and screw connections, and different weight blocks 5 can be connected to the cylinder rod 4, improving the adaptability of the test device to different products.

[0043] To better understand the compression and rebound test device of the present utility model, exemplarily, the following specific working process using this compression and rebound test device is provided;

[0044] (1) When there is no laser emitter in the indenter;

[0045] The control and display system 8 is used to control the operation of the cylinder. When the cylinder starts to act, the control system times. After reaching the set time, a feedback signal is given to the cylinder, and the cylinder lifts up. At the same time, the rebound timing starts. When the operator observes that the product rebounds, the reading starts, and the obtained time is the rebound time.

[0046] (2) When there is a laser emitter in the indenter;

[0047] First, select the product under test and place it on the test base 2, directly below the laser emitter 6. At this time, the weight block 5 is not pressed down.

[0048] According to the test requirements, set the system parameters in the control and display system 8, such as the pressurization time T0 of the weight block. In addition, the distance measured by the laser emitter 6 before pressing is S0. The action time of the cylinder moving upward is T1 (the time T1 is very short and can be almost ignored).

[0049] After setting the initial parameters, start the test. The cylinder rod 4 moves downward to apply pressure to the product under test 7, causing the product under test 7 to deform. After reaching the set time T0, the control system gives a signal to make the cylinder move upward, and the indenter leaves the product under test 7. At the same time, the timing starts. The action time of the cylinder rod 4 moving upward is T1. After reaching the initial position, at this time, the laser emitter 6 starts to work and measures the distance S1 from the product under test in real time. Initially, S1 is greater than S0. The pressed product will start to rebound. When the product rebounds completely, the distance will become S0 again. The control system receives the signal that the distances detected by the laser emitter 6 are the same. At this time, record the time as T2, and the rebound time is T2 (since the time T1 is very short, much less than the rebound time, it can be ignored).

[0050] After measuring the rebound time, it can be displayed through the display system; after completing the measurement, the power supply can be turned off to complete the test.

[0051] Alternatively, first select the product under test and place it on the test base 2 directly below the laser emitter 6. Set the pressurization time. Start timing when the cylinder compresses and descends. When the set time is reached, the controller moves upward. When it reaches the initial position, the control and display system 8 controls the laser emitter 6 to operate and receives the distance feedback from the laser emitter 6 in real time. When the signals of the same distance detected by the laser emitter 6 are received, that is, when it is detected that the product under test has returned to the initial thickness, stop timing. The final time minus the pressurization time of the cylinder is the rebound time.

[0052] It can be understood that the above working processes can all be implemented by the compression and rebound test device of the utility model, but are not limited to the above working processes. Moreover, the signal transmission and feedback between the control and display system 8, the telescopic assembly, and the laser emitter 6 can be achieved by using conventional existing technologies. The innovation of the present utility model lies in the structural design of the test device, rather than the program of the control unit itself.

[0053] Those skilled in the art can easily understand that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present utility model shall all be included within the protection scope of the present utility model.

Claims

1. A compression and rebound test device, characterized in that, It includes a telescopic component, a pressing-down component, a supporting component and a control unit; The telescopic component is vertically arranged on the supporting component, and the lower end of the telescopic component is the telescopic end; The pressing-down component is arranged at the telescopic end of the telescopic component. The pressing-down component includes a weight block connected to the telescopic end and a pressing head arranged at the bottom of the weight block; the pressing head is located above the product to be measured; The control unit is arranged on the supporting component and is electrically connected to the telescopic component.

2. The compression and rebound testing device according to claim 1, wherein A laser emitter is arranged inside the pressing head, which is directed at the product to be measured; the laser emitter is electrically connected to the control unit.

3. The compression and rebound test device according to claim 1, characterized in that The telescopic component is a telescopic cylinder, including a cylinder and a cylinder rod arranged below it; the cylinder is connected to the supporting component, and the cylinder rod is connected to the weight block.

4. The compression and rebound test device according to any one of claims 1 to 3, characterized in that The supporting component includes a bracket and a test base arranged at the bottom of the bracket. The test base is used to place the product to be measured; the telescopic component and the control unit are arranged on the bracket.

5. The compression and rebound testing device according to claim 4, wherein The bracket includes a top bracket, a middle bracket and a side bracket. The top bracket, the middle bracket and the test base are arranged in sequence from top to bottom and are connected by the side bracket; The top bracket is used to support the telescopic component; the middle bracket is used to support the weight block.

6. The compression and rebound test device according to claim 5, characterized in that, A through-hole structure matching the weight block is arranged at the end of the middle bracket to limit the weight block.

7. The compression and rebound testing device according to claim 6, wherein The thickness of the weight block is greater than the thickness of the through-hole structure.

8. The compression and rebound testing device according to any one of claims 5-7, characterized in that, The control unit is a control and display system, and this control and display system is arranged on the side bracket.

9. The compression and rebound test device according to claim 3, wherein, The weight block and the cylinder rod are detachably connected.

10. The compression and rebound testing device according to claim 9, wherein, Replace the weight block with different weights according to different products to be measured.

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