An nc film aging test oven

Abstract

This utility model relates to the field of NC film aging test oven technology, and discloses an NC film aging test oven, including an oven, a rotating shaft installed inside the oven, an opening on the circumferential side of the rotating shaft, mounting holes on the upper surfaces of a first mounting plate and a second mounting plate, a connector installed inside the mounting hole, and a mounting groove on one side of the connector, into which a sample dish is held. This utility model reconstructs the height adjustment mechanism through the collaborative structure of the opening, wedge block, and elastic fixing plate. The opening extending along the axis of the rotating shaft provides a continuous moving track for stepless adjustment. When the wedge block is radially wedged between the two elastic fixing plates, the expansion force generated by its inclined surface forces the elastic fixing plate to form an adaptive interference fit with the inner wall of the opening. This dynamic friction locking mechanism allows the first and second mounting plates to be freely suspended at any axial position, breaking through the physical limitations of traditional hole spacing and increasing the applicability of the equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of NC membrane aging test ovens, specifically an NC membrane aging test oven. Background Technology

[0002] The NC membrane (nitrocellulose membrane) aging test oven is an experimental device specifically designed to simulate and accelerate the environmental stress aging of NC membranes during storage or use. It is mainly used to evaluate the stability, performance degradation, and batch consistency of NC membranes. This device simulates the long-term natural aging process by precisely controlling conditions such as temperature, humidity, and light.

[0003] The utility model patent application with publication number "CN213275298U" discloses a multi-layer film drying oven, which mainly consists of a box body, a lighting lamp, a square glass window, a rotating shaft, a multi-layer turntable, and a fixing ring. This technical solution can complete the required number of test samples after heating the film of aged asphalt samples in one go, so as to realize the ability to make multiple sample dishes at one time, thereby improving the problem of insufficient samples after heating the film. It can shorten the test cycle and avoid the inconsistency and accuracy of test samples.

[0004] The multi-layer film drying oven disclosed in the above document has the following defects: The turntable of the aging oven is fixedly installed by the connecting rod through the through holes on the rotating shaft. However, the preset spacing of the through holes on the rotating shaft is fixed and the number is limited. This design severely restricts the degree of freedom of movement of the turntable in the axial direction. Since the position of the through holes cannot be adjusted, the turntable can only be forcibly locked at a limited number of fixed heights. It is impossible to flexibly adjust the turntable spacing according to experimental requirements. This rigid layout limits the versatility of the equipment and cannot adapt to non-standard spacing experiments. Utility Model Content

[0005] The purpose of this invention is to provide an NC film aging test oven that solves the problem that existing aging ovens cannot flexibly adjust the turntable spacing according to experimental requirements, and that this rigid layout limits the versatility of the equipment and makes it unsuitable for non-standard spacing experiments.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to an NC film aging test oven, comprising an oven with a door hinged to the front. A rotating shaft is installed inside the oven, and an opening is provided on the circumferential side of the rotating shaft. A first mounting plate and a second mounting plate are provided on the outer surface of the rotating shaft. Two elastic fixing plates are provided on the outer surface of the first mounting plate, and a wedge-shaped block is provided on the outer surface of the second mounting plate, located between the two elastic fixing plates. Mounting holes are provided on the upper surfaces of both the first and second mounting plates, and connectors are installed inside the mounting holes. A mounting groove is provided on one side of the connector, and a sample dish is engaged inside the mounting groove.

[0008] Furthermore, the outer surfaces of both elastic fixing plates abut against the inner surface of the opening, and the outer surfaces of the elastic fixing plates are provided with anti-slip stripes. The first mounting plate and the second mounting plate are symmetrically distributed.

[0009] Furthermore, the upper surface of the first mounting plate is provided with a fixing frame and a positioning frame, and the upper surface of the second mounting plate is provided with a fixing block and a positioning block. The fixing block is installed inside the fixing frame, and the positioning block is installed inside the positioning frame.

[0010] Furthermore, the outer surface of the fixing block is provided with a through hole, one end of the fixing block is provided with a sliding groove, one end of the sliding groove extends into the interior of the through hole, two limiting blocks are slidably connected inside the through hole, a spring is installed between the two limiting blocks, two toggle blocks are slidably connected inside the sliding groove, one end of each toggle block is installed on the outer surface of the corresponding limiting block, and limiting holes are provided at both ends of the fixing frame, one end of each of the two limiting blocks is fitted into the interior of the corresponding limiting hole.

[0011] Furthermore, a sealing groove is provided on the outer surface of the oven, and a sealing ring is provided on the outer surface of the oven door, the sealing ring being fitted and installed inside the sealing groove.

[0012] Furthermore, the outer surface of the cabinet door is fitted with a handle and an observation window.

[0013] This utility model has the following beneficial effects:

[0014] (1) This utility model reconstructs the height adjustment mechanism through the collaborative structure of the through-hole, wedge block and elastic fixing plate. The through-hole extending along the axis of rotation provides a continuous moving track for stepless adjustment. When the wedge block is radially wedged between the two elastic fixing plates, the expansion force generated by its inclined surface forces the elastic fixing plate to form an adaptive interference fit with the inner wall of the through-hole. This dynamic friction locking mechanism allows the first mounting plate and the second mounting plate to be freely suspended at any axial position, breaking through the physical limitations of the traditional hole spacing and increasing the applicability of the equipment.

[0015] (2) When the fixing block of the second mounting plate is pushed horizontally into the fixing frame of the first mounting plate, the inclined surfaces on both sides of the fixing block contact the edge of the fixing frame first. The guiding effect of the inclined surfaces forces the two limiting blocks to retract towards the center along the slide groove, and compresses the spring synchronously. When the fixing block is fully inserted into the fixing frame, the limiting hole and the limiting block are precisely aligned. The spring releases its stored energy and pushes the limiting block outward along the through hole trajectory, so that its end is firmly stuck into the limiting hole to form a mechanical interlock, thus completing the rapid assembly of the first mounting plate and the second mounting plate.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the overall structure of the present utility model. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of a partial structure of the present invention. Figure 1 ;

[0021] Figure 4 This is a schematic diagram of a partial structure of the present invention. Figure 2 ;

[0022] Figure 5 This is a schematic diagram of a partial structure of the present invention. Figure 3 ;

[0023] Figure 6 This utility model Figure 5 Enlarged schematic diagram of the structure at point A in the middle;

[0024] The attached diagram lists the components represented by each number as follows:

[0025] In the diagram: 1. Oven; 101. Sealing groove; 2. Door; 201. Sealing ring; 3. Rotating shaft; 301. Through port; 4. First mounting plate; 401. Elastic fixing plate; 402. Fixing frame; 403. Positioning frame; 404. Limiting hole; 5. Second mounting plate; 501. Wedge block; 502. Fixing block; 503. Positioning block; 504. Slide groove; 505. Limiting block; 506. Spring; 507. Pulley; 6. Connector; 7. Sample dish; 8. Handle; 9. Observation window. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0027] Please see Figures 1-6 As shown, this utility model is an NC film aging test oven, including an oven 1. The oven 1 has a door 2 hinged to the front. A rotating shaft 3 is installed inside the oven 1. The rotating shaft 3 has an opening 301 on its circumferential side. A first mounting plate 4 and a second mounting plate 5 are provided on the outer surface of the rotating shaft 3. The outer surface of the first mounting plate 4 is provided with two elastic fixing plates 401. The outer surface of the second mounting plate 5 is provided with a wedge block 501, which is located between the two elastic fixing plates 401. The upper surfaces of the first mounting plate 4 and the second mounting plate 5 are provided with mounting holes. A connector 6 is installed inside the mounting holes. A mounting groove is provided on one side of the connector 6. A sample dish 7 is snapped into the mounting groove.

[0028] The height adjustment mechanism is reconstructed through the collaborative structure of the through-hole 301, the wedge block 501 and the elastic fixing plate 401. The through-hole 301, which extends along the axis of the rotating shaft 3, provides a continuous moving track for stepless adjustment. When the wedge block 501 is radially wedged between the two elastic fixing plates 401, the expansion force generated by its inclined surface forces the elastic fixing plate 401 to form an adaptive interference fit with the inner wall of the through-hole 301. This dynamic friction locking mechanism allows the first mounting plate 4 and the second mounting plate 5 to be freely suspended at any axial position, breaking through the physical limitations of traditional hole spacing and increasing the applicability of the equipment.

[0029] The outer surfaces of the two elastic fixing plates 401 abut against the inner surface of the opening 301. Anti-slip stripes are provided on the outer surfaces of the elastic fixing plates 401. The first mounting plate 4 and the second mounting plate 5 are symmetrically distributed.

[0030] The upper surface of the first mounting plate 4 is provided with a fixing frame 402 and a positioning frame 403, and the upper surface of the second mounting plate 5 is provided with a fixing block 502 and a positioning block 503. The fixing block 502 is installed inside the fixing frame 402, and the positioning block 503 is installed inside the positioning frame 403.

[0031] The outer surface of the fixing block 502 is provided with a through hole, and one end of the fixing block 502 is provided with a sliding groove 504. One end of the sliding groove 504 extends into the interior of the through hole. Two limiting blocks 505 are slidably connected inside the through hole. A spring 506 is installed between the two limiting blocks 505. Two levers 507 are slidably connected inside the sliding groove 504. One end of each lever 507 is installed on the outer surface of the corresponding limiting block 505. Limiting holes 404 are provided at both ends of the fixing frame 402. One end of each of the two limiting blocks 505 is fitted into the interior of the corresponding limiting hole 404. One end of each of the two fixing blocks 502 is provided with a bevel.

[0032] When the fixing block 502 of the second mounting plate 5 is horizontally pushed into the fixing frame 402 of the first mounting plate 4, the inclined surfaces on both sides of the fixing block 502 first contact the edge of the fixing frame 402. The guiding effect of the inclined surfaces forces the two limiting blocks 505 to retract towards the center along the slide groove 504, and simultaneously compress the spring 506. When the fixing block 502 is fully inserted into the fixing frame 402, the limiting hole 404 and the limiting block 505 are precisely aligned. The spring 506 releases its stored energy and pushes the limiting block 505 outward along the through hole trajectory, so that its end is firmly stuck into the limiting hole 404 to form a mechanical interlock, thus completing the rapid assembly of the first mounting plate 4 and the second mounting plate 5.

[0033] The outer surface of the oven 1 is provided with a sealing groove 101, and the outer surface of the oven door 2 is provided with a sealing ring 201, which is installed inside the sealing groove 101.

[0034] The outer surface of the box door 2 is fitted with a handle 8 and an observation window 9.

[0035] In use, the first mounting plate 4 is placed on the side of the rotating shaft 3 and pushed radially to embed its elastic fixing plate 401 into the inner wall of the through 301 of the rotating shaft 3. At this time, the elastic fixing plate 401 is in an unexpanded state and can slide steplessly along the axis of the through 301. Adjust it to the target height according to the experimental requirements. Then, align the wedge block 501 of the second mounting plate 5 with the gap between the two elastic fixing plates 401 of the first mounting plate 4 and push the second mounting plate 5 radially so that the inclined surface of the wedge block 501 presses the inner wall of the elastic fixing plate 401, forcing the elastic fixing plate 401 to expand radially and form an interference fit with the inner wall of the through 301 to achieve height locking.

[0036] When the wedge block 501 is radially wedged into the two elastic fixing plates 401, the fixing block 502 of the second mounting plate 5 is horizontally pushed into the fixing frame 402 of the first mounting plate 4. The inclined surfaces on both sides of the fixing block 502 first contact the edge of the fixing frame 402. The guiding effect of the inclined surfaces forces the two limiting blocks 505 to retract towards the center along the slide groove 504, and simultaneously compress the spring 506. When the fixing block 502 is fully inserted into the fixing frame 402, the limiting hole 404 and the limiting block 505 are precisely aligned. The spring 506 releases its stored energy and pushes the limiting block 505 outward along the through hole trajectory, so that its end is firmly stuck into the limiting hole 404 to form a mechanical interlock, thus completing the rapid assembly of the first mounting plate 4 and the second mounting plate 5.

[0037] After the first mounting plate 4 and the second mounting plate 5 are assembled, insert the connector 6 into the mounting holes of the first mounting plate 4 and the second mounting plate 5, then insert the sample dish 7 into the mounting groove of the connector 6, then take out the NC film sample and place it in the sample dish 7, close the oven door 2, and start the oven 1 to execute the aging program.

[0038] After the NC membrane sample aging test is completed, pull the handle 8 outward to open the door 2, and then take out the sample dish 7 containing the NC membrane sample from the mounting slot of the connector 6 to complete the NC membrane sample aging test operation.

[0039] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An NC film aging test oven, comprising an oven (1), wherein a door (2) is hinged to the front of the oven (1), and a rotating shaft (3) is installed inside the oven (1), characterized in that: The rotating shaft (3) has a through opening (301) on its circumferential side. The outer surface of the rotating shaft (3) is provided with a first mounting plate (4) and a second mounting plate (5). The outer surface of the first mounting plate (4) is provided with two elastic fixing plates (401), and the outer surface of the second mounting plate (5) is provided with a wedge block (501). The wedge block (501) is located between the two elastic fixing plates (401). The upper surfaces of the first mounting plate (4) and the second mounting plate (5) are provided with mounting holes. A connector (6) is installed inside the mounting hole. A mounting groove is provided on one side of the connector (6). A sample dish (7) is snapped into the mounting groove.

2. The NC film aging test oven according to claim 1, characterized in that: The outer surfaces of the two elastic fixing plates (401) abut against the inner surface of the opening (301). The outer surfaces of the elastic fixing plates (401) are provided with anti-slip stripes. The first mounting plate (4) and the second mounting plate (5) are symmetrically distributed.

3. The NC film aging test oven according to claim 1, characterized in that: The upper surface of the first mounting plate (4) is provided with a fixing frame (402) and a positioning frame (403), and the upper surface of the second mounting plate (5) is provided with a fixing block (502) and a positioning block (503). The fixing block (502) is installed inside the fixing frame (402), and the positioning block (503) is installed inside the positioning frame (403).

4. The NC film aging test oven according to claim 3, characterized in that: The outer surface of the fixing block (502) is provided with a through hole, and one end of the fixing block (502) is provided with a sliding groove (504). One end of the sliding groove (504) extends into the interior of the through hole. Two limiting blocks (505) are slidably connected inside the through hole, and a spring (506) is installed between the two limiting blocks (505). The slide groove (504) has two sliding blocks (507) inside. One end of each of the two blocks (507) is installed on the outer surface of the corresponding limiting block (505). The fixed frame (402) has limiting holes (404) at both ends. One end of each of the two limiting blocks (505) is installed in the corresponding limiting hole (404).

5. The NC film aging test oven according to claim 1, characterized in that: The outer surface of the oven (1) is provided with a sealing groove (101), and the outer surface of the oven door (2) is provided with a sealing ring (201). The sealing ring (201) is installed inside the sealing groove (101).

6. The NC film aging test oven according to claim 5, characterized in that: The outer surface of the box door (2) is fitted with a handle (8) and an observation window (9).

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