Yellowing resistance testing machine for whitening agent

Abstract

The yellowing resistance testing machine comprises a box body, a door frame is arranged at the front end of the box body, a box door is connected to the inner side of the door frame in a sliding mode, a screw rod is rotatably connected to the front end of the box door, a rotating plate is connected to the outer side of the screw rod in a threaded mode, the left end of the rotating plate is rotatably connected to the box body, and guide shafts are fixedly connected to the left end and the right end of the box door. The upper end of the box body is fixedly connected with a fixing shaft, the inner side of the fixing shaft is provided with a limiting hole, the inner side of the limiting hole is slidably connected with a limiting shaft, the lower end of the limiting shaft is fixedly connected with a positioning shaft, the positioning shaft penetrates out of the fixing shaft, the upper end of the rotating plate is provided with a clamping hole, and the positioning shaft is slidably connected to the inner side of the clamping hole. A connecting shaft is fixedly connected to the upper end of the limiting shaft and penetrates out of the fixing shaft, a first spring installed on the inner side of the limiting hole is arranged on the outer side of the connecting shaft, and the box door and the door frame are closed tightly and firmly and are not prone to being opened.

Description

Technical Field

[0001] The utility model relates to the technical field of whitening agent processing, in particular to a yellowing resistance testing machine for whitening agents. Background Art

[0002] The utility model patent with application number: CN201621235882.0 discloses a yellowing resistance testing machine, including a testing machine body, which is composed of a light box and an electric control box, and the light box and the electric control box are fixed together by screws; the light box is provided with a door frame, and the door frame is opened on the front of the light box; the door frame is provided with a ball plunger, and the ball plunger is installed in a small through hole opened on the right side of the door frame; the ball plunger includes an outer shell, a spring and a small round ball, the outer shell is a cavity structure, the spring is installed in the cavity of the outer shell, and the small round ball is movably installed at the open end of the outer shell; the light box is provided with a light box door, and the upper and lower planes of the light box door are both provided with mounting columns, and the light box door and the door frame are clamped together by the mounting columns; the light box door is provided with a small through hole, and the small through hole is opened on the right side of the light box door; the light box door is also provided with a door handle and an inner lock buckle, the door handle is fixedly installed on the outer side of the light box door, and the inner lock buckle is fixedly installed on the inner side of the light box door. The above technical solution sets a ball plunger. When the light box door is closed, the small ball on the ball plunger moves into the cavity to compress the spring. When the operator pulls the door handle to open the light box door, the small ball on the ball plunger moves out of the cavity, and the spring returns to its original state, thereby achieving low wear and extending the service life of the utility model. However, when the yellowing resistance tester is used for testing, the temperature and light in the light box need to be kept stable to improve the test accuracy. Therefore, the light box door needs to be closed tightly and not easily opened. It is difficult to close the light box door tightly and firmly by simply relying on the cooperation between the small ball on the ball plunger and the small through hole on the right side of the light box door. Utility Model Content

[0003] The utility model aims to solve the problems existing in the prior art and provides a yellowing resistance testing machine for whitening agents. The box door is tightly matched with the box body and is not easy to open.

[0004] The utility model adopts a technical solution to solve the technical problem: the yellowing resistance testing machine for whitening agents comprises a box body, a door frame is provided at the front end of the box body, a box door is slidably connected to the inner side of the door frame, a screw is rotatably connected to the front end of the box door, a rotating plate is threadedly connected to the outer side of the screw, the left end of the rotating plate is rotatably connected to the box body, the left and right ends of the box door are fixedly connected to guide shafts, the guide shaft is slidably connected to the rotating plate, the upper end of the box body is fixedly connected to a fixed shaft, a limiting hole is provided at the inner side of the fixed shaft, the limiting shaft is slidably connected to the inner side of the limiting hole, the lower end of the limiting shaft is fixedly connected to a positioning shaft, the positioning shaft passes through the fixed shaft, a clamping hole is provided at the upper end of the rotating plate, the positioning shaft is slidably connected to the inner side of the clamping hole, the upper end of the limiting shaft is fixedly connected There is a connecting shaft, which passes through the fixed shaft. A first spring installed on the inner side of the limiting hole is provided on the outer side of the connecting shaft. The rotating plate is rotated and the connecting shaft is pulled upward. The connecting shaft drives the positioning shaft to move upward through the limiting shaft. The first spring is compressed. When the rotating plate is located directly in front of the box body, the connecting shaft is released, and the first spring rebounds to drive the limiting shaft to move downward. The limiting shaft drives the positioning shaft to move downward, and the positioning shaft slides into the inner side of the card hole to position the rotating plate. The screw is rotated, and the screw drives the box door to move backward. The box door slides to the inside of the door frame to close the box body. It is closed tightly and is not easy to be opened. Even if the screw is touched by mistake, the screw rotation drives the box door to move forward. Due to the effect of the door frame, the box door and the door frame are still tightly connected, and the testing machine has a good use effect.

[0005] For further improvement, the front end of the guide shaft is fixedly connected to a mounting shaft, the front end of the rotating plate is fixedly connected to a fixing block, a mounting hole is opened on the fixing block, the mounting shaft is slidably connected to the inner side of the mounting hole, and a second spring installed on the inner side of the mounting hole is provided at the front end of the mounting shaft. The second spring can provide thrust to the box door through the mounting shaft, so that the box door can be used better, the force required to rotate the screw is increased, and the screw can be better avoided from being rotated accidentally.

[0006] As a further improvement, a handle is fixedly connected to the front end of the screw rod, making it more convenient to rotate the screw rod.

[0007] For further improvement, a sealing ring is installed on the inner side of the door frame to achieve a better sealing effect between the box body and the box door.

[0008] For further improvement, a positioning block is fixedly connected to the right side of the front end of the box body, and the positioning block can locate the rotation position of the rotating plate, making the testing machine more convenient to use.

[0009] As a further improvement, a handle is fixedly connected to the upper end of the connecting shaft, making it more convenient to pull the connecting shaft.

[0010] For further improvement, a motor is installed inside the box body, a rotating shaft is connected to the upper end of the motor, the rotating shaft is rotatably connected to the inside of the box body, an adjusting shaft is connected to the upper end of the rotating shaft, a mounting plate is fixedly connected to the upper end of the adjusting shaft, the mounting plate is used to place the sample, and the mounting plate can rotate, so that the test effect of the sample is more accurate.

[0011] As a further improvement, a through hole is provided on the mounting plate, so that the test effect of the sample is more accurate.

[0012] For further improvement, a sliding hole is opened at the upper end of the rotating shaft, the adjusting shaft is slidably connected to the inner side of the sliding hole, a slot is provided on the rotating shaft on the outer side of the sliding hole, a clamping strip is fixedly connected to the outer side of the adjusting shaft, the clamping strip is slidably connected to the inner side of the slot, a positioning hole is opened on the adjusting shaft, a positioning pin is slidably connected to the inner side of the positioning hole, a plurality of adjustment holes matching the positioning holes are opened on the outer side of the rotating shaft, the positioning pin is slidably connected to the inner side of the adjusting hole, and the height of the mounting plate is adjustable, so that the testing machine can be used better.

[0013] The beneficial effects of the utility model are as follows: the rotating plate is rotated, the connecting shaft is pulled upward, the connecting shaft drives the positioning shaft to move upward through the limit shaft, the first spring is compressed, and when the rotating plate is located directly in front of the box body, the connecting shaft is released, the first spring rebounds and drives the limit shaft to move downward, the limit shaft drives the positioning shaft to move downward, the positioning shaft slides into the inner side of the card hole to position the rotating plate, the screw is rotated, the screw drives the box door to move backward, the box door slides into the inner side of the door frame to close the box body, and it is tightly closed and not easy to be opened. Even if the screw is accidentally touched, the screw rotates to drive the box door to move forward. Due to the effect of the door frame, the box door and the door frame are still tightly connected, and the testing machine has a good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the turning plate of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the box door of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the fixed block of the utility model;

[0018] Figure 5 It is a cross-sectional view of the fixed shaft of the utility model;

[0019] Figure 6 It is a structural schematic diagram of the box body of the utility model;

[0020] Figure 7 This is a schematic diagram of the structure of the installation disk of the utility model;

[0021] Figure 8 It is a structural schematic diagram of the rotating shaft of the utility model;

[0022] Fig. 9 It is a structural schematic diagram of the installation disk of the utility model.

[0023] Explanation of the accompanying drawings: 1. Box body; 11. Door frame; 12. Sealing ring; 13. Positioning block; 14. Fixed shaft; 141. Limiting hole; 15. Positioning shaft; 151. Limiting shaft; 152. Connecting shaft; 153. Handle; 154. First spring; 16. Mounting plate; 161. Through hole; 17. Adjusting shaft; 171. Clip strip; 172. Positioning hole; 18. Rotating shaft; 181. Sliding hole; 182. Slot; 183. Adjusting hole; 184. Motor; 19. Positioning pin; 2. Box door; 21. Screw; 211. Turning handle; 22. Guide shaft; 221. Mounting shaft; 23. Rotating plate; 231. Clip hole; 24. Fixed block; 241. Mounting hole; 242. Second spring. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-9 The utility model is further described as follows:

[0025] like Figure 1-Figure 4 As shown: In this embodiment, a yellowing resistance tester for whitening agents includes a box body 1, a door frame 11 is opened at the front end of the box body 1, and a box door 2 is slidably connected to the inner side of the door frame 11, a screw rod 21 is rotatably connected to the front end of the box door 2, a handle 211 is fixedly connected to the front end of the screw 21, a rotating plate 23 is threadedly connected to the outer side of the screw 21, and the left end of the rotating plate 23 is rotatably connected to the box body 1, and guide shafts 22 are fixedly connected to the left and right ends of the box door 2, and the guide shaft 22 is slidably connected to the rotating plate 23, and a mounting shaft 221 is fixedly connected to the front end of the guide shaft 22, and a fixing block 24 is fixedly connected to the front end of the rotating plate 23, and a mounting hole 241 is opened on the fixing block 24, and the mounting shaft 221 is slidably connected to the inner side of the mounting hole 241, and a second spring 242 installed on the inner side of the mounting hole 241 is provided at the front end of the mounting shaft 221.

[0026] like Figure 1-Figure 2 and Figure 5-Figure 6 As shown: a positioning block 13 is fixedly connected to the right side of the front end of the box body 1, a fixed shaft 14 is fixedly connected to the upper end of the box body 1, a limiting hole 141 is opened inside the fixed shaft 14, a limiting shaft 151 is slidably connected to the inner side of the limiting hole 141, a positioning shaft 15 is fixedly connected to the lower end of the limiting shaft 151, the positioning shaft 15 passes through the fixed shaft 14, a clamping hole 231 is opened at the upper end of the rotating plate 23, the positioning shaft 15 is slidably connected to the inner side of the clamping hole 231, a connecting shaft 152 is fixedly connected to the upper end of the limiting shaft 151, the connecting shaft 152 passes through the fixed shaft 14, a handle 153 is fixedly connected to the upper end of the connecting shaft 152, and a first spring 154 installed on the inner side of the limiting hole 141 is provided on the outer side of the connecting shaft 152.

[0027] like Figure 6-Figure 9As shown: a motor 184 is installed on the inner side of the box body 1, and a rotating shaft 18 is connected to the upper end of the motor 184. The rotating shaft 18 is rotatably connected to the inner side of the box body 1. A sliding hole 181 is opened on the upper end of the rotating shaft 18, and an adjusting shaft 17 is slidably connected to the inner side of the sliding hole 181. A card slot 182 opened on the rotating shaft 18 is provided on the outer side of the sliding hole 181. A clamping strip 171 is fixedly connected to the outer side of the adjusting shaft 17, and the clamping strip 171 is slidably connected to the inner side of the card slot 182. A positioning hole 172 is opened on the adjusting shaft 17, and a positioning pin 19 is slidably connected to the inner side of the positioning hole 172. A plurality of adjusting holes 183 matched with the positioning hole 172 are opened on the outer side of the rotating shaft 18, and the positioning pin 19 is slidably connected to the inner side of the adjusting hole 183. A mounting plate 16 is fixedly connected to the upper end of the adjusting shaft 17, and a through hole 161 is opened on the mounting plate 16.

[0028] When the utility model is in use: the rotating plate 23 is rotated, the connecting shaft 152 is pulled upward, the connecting shaft 152 drives the positioning shaft 15 to move upward through the limiting shaft 151, the first spring 154 is compressed, and when the rotating plate 23 is located directly in front of the box body 1, the connecting shaft 152 is released, the first spring 154 rebounds and drives the limiting shaft 151 to move downward, the limiting shaft 151 drives the positioning shaft 15 to move downward, the positioning shaft 15 slides into the inner side of the clamping hole 231 to position the rotating plate 23, the screw rod 21 is rotated, the screw rod 21 drives the box door 2 to move backward, the box door 2 slides into the inner side of the door frame 11 to close the box body 1, and the closure is tight and tight, and it is not easy to be opened.

[0029] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A yellowing resistance testing machine for whitening agents, comprising a box (1), the front end of the box (1) being provided with a door frame (11), wherein: The inner side of the door frame (11) is slidably connected to a box door (2), the front end of the box door (2) is rotatably connected to a screw rod (21), the outer side of the screw rod (21) is threadedly connected to a rotating plate (23), the left end of the rotating plate (23) is rotatably connected to the box body (1), the left and right ends of the box door (2) are fixedly connected to guide shafts (22), and the guide shafts (22) are slidably connected to the rotating plate (23).

2. The yellowing resistance testing machine for whitening agents according to claim 1, characterized in that: A fixed shaft (14) is fixedly connected to the upper end of the box body (1), a limiting hole (141) is formed inside the fixed shaft (14), a limiting shaft (151) is slidably connected inside the limiting hole (141), a positioning shaft (15) is fixedly connected to the lower end of the limiting shaft (151), the positioning shaft (15) passes through the fixed shaft (14), a clamping hole (231) is formed at the upper end of the rotating plate (23), the positioning shaft (15) is slidably connected to the inner side of the clamping hole (231), a connecting shaft (152) is fixedly connected to the upper end of the limiting shaft (151), the connecting shaft (152) passes through the fixed shaft (14), and a first spring (154) installed inside the limiting hole (141) is provided on the outer side of the connecting shaft (152).

3. The yellowing resistance testing machine for whitening agents according to claim 1, characterized in that: The front end of the guide shaft (22) is fixedly connected to a mounting shaft (221), the front end of the rotating plate (23) is fixedly connected to a fixing block (24), a fixing hole (241) is formed on the fixing block (24), the mounting shaft (221) is slidably connected to the inside of the mounting hole (241), and a second spring (242) is provided at the front end of the mounting shaft (221) and is mounted on the inside of the mounting hole (241).

4. The yellowing resistance testing machine for whitening agents according to claim 1, characterized in that: The front end of the screw rod (21) is fixedly connected to a turning handle (211).

5. The yellowing resistance testing machine for whitening agents according to claim 1, characterized in that: A sealing ring (12) is installed on the inner side of the door frame (11).

6. The yellowing resistance testing machine for whitening agents according to claim 1, characterized in that: A positioning block (13) is fixedly connected to the right side of the front end of the box body (1).

7. The yellowing resistance testing machine for whitening agents according to claim 2, characterized in that: A handle (153) is fixedly connected to the upper end of the connecting shaft (152).

8. The yellowing resistance testing machine for whitening agents according to claim 1, characterized in that: A motor (184) is installed inside the box body (1), the upper end of the motor (184) is connected to a rotating shaft (18), the rotating shaft (18) is rotatably connected to the inner side of the box body (1), the upper end of the rotating shaft (18) is connected to an adjusting shaft (17), and the upper end of the adjusting shaft (17) is fixedly connected to a mounting plate (16).

9. The yellowing resistance testing machine for whitening agents according to claim 8, characterized in that: The installation plate (16) is provided with a through hole (161).

10. The yellowing resistance testing machine for whitening agents according to claim 8, characterized in that: The rotating shaft (18) has a sliding hole (181) at the upper end, the adjusting shaft (17) is slidably connected to the inner side of the sliding hole (181), a clamping groove (182) opened on the rotating shaft (18) is provided on the outer side of the sliding hole (181), a clamping strip (171) is fixedly connected to the outer side of the adjusting shaft (17), the clamping strip (171) is slidably connected to the inner side of the clamping groove (182), a positioning hole (172) is formed on the adjusting shaft (17), a positioning pin (19) is slidably connected to the inner side of the positioning hole (172), a plurality of adjusting holes (183) matched with the positioning holes (172) are formed on the rotating shaft (18), and the positioning pin (19) is slidably connected to the inner side of the adjusting hole (183).

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