Nucleic acid protein quantitation instrument with cleaning function

Abstract

The utility model discloses a nucleic acid protein quantometer with a cleaning function, which belongs to the technical field of nucleic acid detection and comprises a detection device, a cleaning device is mounted on the detection device, and a paper changing device is mounted on the cleaning device. The cleaning device comprises a driving assembly, a cleaning assembly and a cleaning liquid assembly, the driving assembly is connected with the detection device, the cleaning assembly and the paper changing device, and the cleaning assembly is connected with the cleaning liquid assembly. By means of the mode, the detection machine base in the detection device is automatically cleaned through the cleaning liquid assembly and the cleaning assembly driven by the driving assembly, and the repeated workload of workers is reduced; and through the arrangement of the sliding table electric cylinder, different parts of the dust-free paper can be used when the suction cup air cylinder adsorbs the dust-free paper to clean the multiple detection machine bases, the detection machine bases are prevented from being polluted, and the utilization rate of the dust-free paper is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of nucleic acid detection, and particularly relates to a nucleic acid and protein quantifier with a cleaning function. Background Art

[0002] In order to understand the abundance of target molecules in biological samples, nucleic acid and protein quantitative detection can be carried out on biological samples, and nucleic acid and protein quantifiers are commonly used detection instruments at present.

[0003] For example, Chinese Patent Application CN217605876U discloses a nucleic acid and protein quantifier, which includes a shaft rod rotatably connected between a flip cover and a main body. One end of the shaft rod away from the flip cover is fixed with a movable rod, and the movable rod passes through the main body and is movably connected with the main body; a limiting component for restricting the movement of the movable rod is also arranged in the main body. By driving the movable rod to move on the main body, the shaft rod is driven to move, so as to realize that the shaft rod moves away from the flip cover or is rotatably connected to the flip cover. When the shaft rod is rotatably connected to the flip cover, the limiting component ensures the stability of the shaft rod. When the shaft rod moves away from the flip cover, the flip cover can be freely removed.

[0004] However, when this nucleic acid and protein quantifier is in use, after each detection, the staff needs to rotate the shaft rod to clean the detection component. When collecting and detecting multiple samples, a large number of repetitive cleaning steps are required, and the repetitive workload of the staff is large.

[0005] Based on this, the utility model designs a nucleic acid and protein quantifier with a cleaning function to solve the above problems. Content of the Utility Model

[0006] Aiming at the above-mentioned disadvantages of the prior art, the utility model provides a nucleic acid and protein quantifier with a cleaning function.

[0007] To achieve the above object, the utility model is realized through the following technical solutions:

[0008] A nucleic acid and protein quantifier with a cleaning function includes a detection device,

[0009] A cleaning device is installed on the detection device, and a paper changing device is installed on the cleaning device;

[0010] The cleaning device includes a driving component, a cleaning component and a cleaning liquid component. The driving component is connected to the detection device, the cleaning component and the paper changing device, and the cleaning component is connected to the cleaning liquid component.

[0011] Further, the detection device includes a detection main body, a detection base, a detection arm, two sample bases, two optical fiber bases, a first motor bracket and a first motor. The detection base is fixedly installed at the upper end of the detection main body. One end of the detection arm is rotatably connected to the detection base. The two sample bases are fixedly installed on the detection base. The two optical fiber bases are fixedly installed on the detection arm. The first motor bracket is fixedly installed on the detection main body. The first motor is fixedly installed at the left end of the first motor bracket. The output end of the first motor is fixedly connected to one end of the detection arm. After the detection arm rotates, the sample bases and the optical fiber bases are arranged in one-to-one correspondence.

[0012] Further, the driving assembly includes two driving brackets, a slide rail, a slider, a threaded rod, a second motor bracket and a second motor. The two driving brackets are fixedly installed at the upper end of the detection main body. The two ends of the slide rail are fixedly connected to the two driving brackets. The two ends of the threaded rod are rotatably connected to the two driving brackets. The slider is slidably connected to the slide rail in a limited manner. The slider is threadedly connected to the threaded rod. One end of the slider is connected to the cleaning assembly. The second motor bracket is fixedly installed at the rear end of the rear driving bracket. The second motor is fixedly installed at the rear end of the second motor bracket. The output end of the second motor is fixedly connected to one end of the threaded rod.

[0013] Further, the cleaning assembly includes a third motor bracket, a third motor, a slide table electric cylinder, a suction cup cylinder and a pneumatic slip ring. The third motor bracket is fixedly connected to the left end of the slider. The upper end of the third motor bracket is fixedly connected to the third motor. The main body part of the slide table electric cylinder is rotatably connected to the lower end of the third motor bracket through a conductive slip ring. The output end of the third motor is fixedly connected to the main body part of the slide table electric cylinder. The lower end of the slide of the slide table electric cylinder is fixedly connected to the suction cup cylinder. The output end of the suction cup cylinder is vertically downward. The pneumatic slip ring is rotatably connected to the outside of the suction cup cylinder. The front end of the third motor bracket is connected to the cleaning liquid assembly.

[0014] Further, the cleaning liquid assembly includes a fixed block, an air inlet pipe, an air pump, a cleaning liquid tank and a liquid outlet nozzle. The fixed block is fixedly installed at the front end of the third motor bracket. The air inlet pipe passes through the fixed block and is fixedly connected to the air inlet of the air pump in a communicating manner. The air inlet pipe is fixedly connected to the fixed block. The lower end of the air pump is fixedly connected to the cleaning liquid tank. The lower end of the cleaning liquid tank is fixedly connected to the liquid outlet nozzle.

[0015] Further, the paper changing device includes a paper collecting assembly and a sealing assembly. The paper collecting assembly is connected to the left end of the rear driving bracket. The sealing assembly is installed at the upper end of the paper collecting assembly.

[0016] Further, the paper collecting assembly includes a paper collecting rack, a cylinder, two pressing plates, springs, and a waste paper slot. The paper collecting rack is fixedly connected to the left end of the rear driving bracket. A circular slot for placing dust-free paper is provided on the paper collecting rack. The two pressing plates are installed in the circular slot in a limited sliding manner. The two ends of the spring are fixedly connected to the two pressing plates. The cylinder is fixedly installed at the lower end of the paper collecting rack. The output end of the cylinder is fixedly connected to the lower pressing plate. The waste paper slot is provided at the upper end of the paper collecting rack. The waste paper slot is located in front of the circular slot of the paper collecting rack. The upper end of the paper collecting rack is connected to the sealing assembly.

[0017] Further, the sealing assembly includes a sealing cover, a sealing ring, a pressing block, a fourth motor bracket, and a fourth motor. One end of the sealing cover is rotatably connected to the fourth motor bracket. A sealing ring is fixedly installed at the lower end of the sealing cover. The lower end of the sealing ring is in contact and sealing connection with the paper collecting rack. The fourth motor bracket is fixedly installed at the upper end of the paper collecting rack. The fourth motor is fixedly installed at the rear end of the fourth motor bracket. The output end of the fourth motor is fixedly connected to the sealing cover. The pressing block is fixedly installed at the lower end of the sealing cover.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] The present utility model automatically cleans the detection base in the detection device through the cleaning liquid assembly and the cleaning assembly driven by the driving assembly, reducing the repetitive workload of the staff;

[0020] Through the setting of the sliding table electric cylinder, when the suction cup cylinder adsorbs the dust-free paper to clean multiple detection bases, different parts of the dust-free paper will be used, avoiding the contamination of the detection bases and improving the utilization rate of the dust-free paper. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 Three-dimensional view of a nucleic acid and protein quantifier with a cleaning function according to the present utility model Figure 1 ;

[0023] Figure 2 Front view of a nucleic acid and protein quantifier with a cleaning function according to the present utility model;

[0024] Figure 3 Left view of a nucleic acid and protein quantifier with a cleaning function according to the present utility model;

[0025] Figure 4Three-dimensional view of a nucleic acid and protein quantifier with a cleaning function according to the present utility model Figure 2 ;

[0026] Figure 5 is a sectional view taken along the A-A direction of Figure 2 ;

[0027] Figure 6 is an enlarged view of part B in Figure 4 ;

[0028] Figure 7 is an enlarged view of part C in Figure 5 ;

[0029] The reference numerals in the figure respectively represent:

[0030] 1. Detection device 11. Detection main body 12. Detection base 13. Detection arm 14. Sample base 15. Optical fiber base 16. First motor bracket 17. First motor 2. Cleaning device 21. Driving assembly 211. Driving bracket 212. Slide rail 213. Slide block 214. Threaded rod 215. Second motor bracket 216. Second motor 22. Cleaning assembly 221. Third motor bracket 222. Third motor 223. Slide table electric cylinder 224. Suction cup cylinder 225. Pneumatic slip ring 23. Cleaning liquid assembly 231. Fixed block 232. Air inlet pipe 233. Air pump 234. Cleaning liquid tank 235. Liquid outlet nozzle 3. Paper changing device 31. Paper collecting assembly 311. Paper collecting rack 312. Cylinder 313. Pressing plate 314. Spring 315. Waste paper slot 32. Sealing assembly 321. Sealing cover 322. Sealing ring 323. Pressing block 324. Fourth motor bracket 325. Fourth motor. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0032] The "left", "right", "front", "rear", "upper" and "lower" mentioned in the following description are oriented in the perspective direction of the front view.

[0033] In some embodiments, please refer to the accompanying drawings of the specification Figures 1-7 , a nucleic acid and protein quantifier with a cleaning function, includes a detection device 1,

[0034] a cleaning device 2 is installed on the detection device 1, and a paper changing device 3 is installed on the cleaning device 2;

[0035] The cleaning device 2 includes a driving component 21, a cleaning component 22, and a cleaning liquid component 23. The driving component 21 is connected to the detection device 1, the cleaning component 22, and the paper changing device 3, and the cleaning component 22 is connected to the cleaning liquid component 23.

[0036] When the nucleic acid and protein quantifier with a cleaning function is in normal use, the cleaning component 22 is started, the dust-free paper is taken out and fixed from the paper changing device 3, the driving component 21 is started, the driving component 21 drives the cleaning component 22 and the cleaning liquid component 23 to move above the detection device 1, and the automatic cleaning of the detection device 1 by the cleaning liquid component 23 and the cleaning component 22 reduces the repetitive workload of the staff.

[0037] The detection device 1 includes a detection main body 11, a detection base 12, a detection arm 13, two sample bases 14, two optical fiber bases 15, a first motor bracket 16, and a first motor 17. The detection base 12 is fixedly installed at the upper end of the detection main body 11. One end of the detection arm 13 is rotatably connected to the detection base 12. The two sample bases 14 are fixedly installed on the detection base 12. The two optical fiber bases 15 are fixedly installed on the detection arm 13. The first motor bracket 16 is fixedly installed on the detection main body 11. The first motor 17 is fixedly installed at the left end of the first motor bracket 16. The output end of the first motor 17 is fixedly connected to one end of the detection arm 13. After the detection arm 13 rotates, the sample bases 14 and the optical fiber bases 15 are arranged in one-to-one correspondence.

[0038] The driving component 21 includes two driving brackets 211, a slide rail 212, a slider 213, a threaded rod 214, a second motor bracket 215, and a second motor 216. The two driving brackets 211 are fixedly installed at the upper end of the detection main body 11. The two ends of the slide rail 212 are fixedly connected to the two driving brackets 211. The two ends of the threaded rod 214 are rotatably connected to the two driving brackets 211. The slider 213 is in limit sliding connection with the slide rail 212. The slider 213 is threadedly connected to the threaded rod 214. One end of the slider 213 is connected to the cleaning component 22. The second motor bracket 215 is fixedly installed at the rear end of the rear driving bracket 211. The second motor 216 is fixedly installed at the rear end of the second motor bracket 215. The output end of the second motor 216 is fixedly connected to one end of the threaded rod 214.

[0039] The cleaning component 22 includes a third motor mount 221, a third motor 222, a slide electric cylinder 223, a suction cup cylinder 224, and a pneumatic slip ring 225. The third motor mount 221 is fixedly connected to the left end of the slider 213. The upper end of the third motor mount 221 is fixedly connected to the third motor 222. The main body part of the slide electric cylinder 223 is rotatably connected to the lower end of the third motor mount 221 through a conductive slip ring. The output end of the third motor 222 is fixedly connected to the main body part of the slide electric cylinder 223. The lower end of the slide of the slide electric cylinder 223 is fixedly connected to the suction cup cylinder 224. The output end of the suction cup cylinder 224 is vertically downward. The pneumatic slip ring 225 is rotatably connected to the outside of the suction cup cylinder 224. The front end of the third motor mount 221 is connected to the cleaning liquid component 23.

[0040] The cleaning liquid component 23 includes a fixed block 231, an air inlet pipe 232, an air pump 233, a cleaning liquid tank 234, and a liquid outlet nozzle 235. The fixed block 231 is fixedly installed at the front end of the third motor mount 221. The air inlet pipe 232 passes through the fixed block 231 and is fixedly connected to the air inlet of the air pump 233 in a communicating manner. The air inlet pipe 232 is fixedly connected to the fixed block 231. The lower end of the air pump 233 is fixedly connected to the cleaning liquid tank 234. The lower end of the cleaning liquid tank 234 is fixedly connected to the liquid outlet nozzle 235.

[0041] When the nucleic acid and protein quantifier with a cleaning function is in normal use, the suction cup cylinder 224 is started. The suction cup cylinder 224 adsorbs the dust-free paper. The second motor 216 is started. The second motor 216 drives the threaded rod 214 to rotate. The threaded rod 214 drives the slider 213 to move forward along the slide rail 212. The slider 213 drives the third motor bracket 221 to move. The third motor bracket 221 drives the fixed block 231 to move, so that the liquid outlet nozzle 235 moves above the first optical fiber base 15. The air pump 233 is started. The air pump 233 inhales air and outputs the cleaning liquid from the liquid outlet nozzle 235 to the surface of the optical fiber base 15. The second motor 216 is started again. The second motor 216 drives the suction cup cylinder 224 to move. When the suction cup cylinder 224 moves above the first optical fiber base 15, the suction cup cylinder 224 is started to make the dust-free paper fit the optical fiber base 15. The third motor 222 is started. The third motor 222 drives the slide table electric cylinder 223 to rotate. The slide table electric cylinder 223 drives the suction cup cylinder 224 to rotate. The suction cup cylinder 224 drives the central part of the dust-free paper to wipe the optical fiber base 15. After the wiping is completed, the second motor 216 is started to make the liquid outlet nozzle 235 move above the second optical fiber base 15. The slide table electric cylinder 223 is started. The slide table electric cylinder 223 drives the suction cup cylinder 224 to move outward, so that the center of the dust-free paper is offset from the second optical fiber base 15, avoiding the contact between the contaminated part of the dust-free paper wiping the first optical fiber base 15 and the second optical fiber base 15. The above steps are repeated to clean the two sample bases 14, and the slide table electric cylinder 223 is started in turn to make full use of the dust-free paper. After the cleaning is completed, the second motor 216 rotates in the reverse direction to drive the third motor bracket 221 to move backward and return; the dust-free paper is adsorbed by the suction cup cylinder 224 and the cleaning liquid in the cleaning liquid tank 234 is sprayed through the liquid outlet nozzle 235 to automatically clean the two sample bases 14 and the two optical fiber bases 15, reducing the repetitive workload of the staff.

[0042] The paper changing device 3 includes a paper collecting component 31 and a sealing component 32. The paper collecting component 31 is connected to the left end of the rear driving bracket 211, and the sealing component 32 is installed at the upper end of the paper collecting component 31.

[0043] The paper collecting component 31 includes a paper collecting frame 311, a cylinder 312, two pressing plates 313, a spring 314 and a waste paper slot 315. The paper collecting frame 311 is fixedly connected to the left end of the rear driving bracket 211. A circular groove for placing the dust-free paper is opened on the paper collecting frame 311. The two pressing plates 313 are installed in the circular groove in a limited sliding manner. The two ends of the spring 314 are fixedly connected to the two pressing plates 313. The cylinder 312 is fixedly installed at the lower end of the paper collecting frame 311. The output end of the cylinder 312 is fixedly connected to the lower pressing plate 313. The waste paper slot 315 is opened at the upper end of the paper collecting frame 311. The upper end of the paper collecting frame 311 is connected to the sealing component 32.

[0044] The sealing assembly 32 includes a sealing cover 321, a sealing ring 322, a pressing block 323, a fourth motor bracket 324, and a fourth motor 325. One end of the sealing cover 321 is rotatably connected to the fourth motor bracket 324. A sealing ring 322 is fixedly installed at the lower end of the sealing cover 321. The lower end of the sealing ring 322 is in contact and sealed connection with the paper collecting rack 311. The fourth motor bracket 324 is fixedly installed at the upper end of the paper collecting rack 311. The fourth motor 325 is fixedly installed at the rear end of the fourth motor bracket 324. The output end of the fourth motor 325 is fixedly connected to the sealing cover 321. The pressing block 323 is fixedly installed at the lower end of the sealing cover 321.

[0045] When the nucleic acid and protein quantifier with cleaning function is in normal use, before the cleaning starts, the fourth motor 325 is started. The fourth motor 325 drives the sealing cover 321 to rotate, and the pressure of the pressing block 323 on the dust-free paper disappears. Then the cylinder 312 is started, and the cylinder 312 drives the lower pressing plate 313 to move upward. When the dust-free paper contacts the suction cup of the suction cup cylinder 224, the pressing plate 313 compresses the spring 314, so that the dust-free paper is closely attached to the suction cup of the suction cup cylinder 224. After the suction cup cylinder 224 is started, the cylinder 312 drives the pressing plate 313 to move downward and reset. Then the fourth motor 325 is started, and the fourth motor 325 drives the sealing cover 321 to rotate. The pressing block 323 contacts the dust-free paper and pushes the dust-free paper downward to compress the spring 314, preventing the dust-free paper from being misaligned and causing the sealing cover 321 to press the dust-free paper when it is closed, resulting in incomplete sealing. After the cleaning is completed, when the suction cup cylinder 224 moves above the waste paper slot 315, it stops running, and the waste dust-free paper falls into the waste paper slot 315 for collection.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A nucleic acid and protein quantifier with a cleaning function, comprising a detection device (1), characterized in that: A cleaning device (2) is installed on the detection device (1), and a paper changing device (3) is installed on the cleaning device (2). The cleaning device (2) includes a driving component (21), a cleaning component (22) and a cleaning liquid component (23). The driving component (21) is connected to the detection device (1), the cleaning component (22) and the paper changing device (3), and the cleaning component (22) is connected to the cleaning liquid component (23).

2. The nucleic acid and protein quantifier with a cleaning function according to claim 1, characterized in that The detection device (1) includes a detection main body (11), a detection base (12), a detection arm (13), two sample bases (14), two optical fiber bases (15), a first motor bracket (16) and a first motor (17). The detection base (12) is fixedly installed at the upper end of the detection main body (11). One end of the detection arm (13) is rotatably connected to the detection base (12). The two sample bases (14) are fixedly installed on the detection base (12). The two optical fiber bases (15) are fixedly installed on the detection arm (13). The first motor bracket (16) is fixedly installed on the detection main body (11). The first motor (17) is fixedly installed at the left end of the first motor bracket (16). The output end of the first motor (17) is fixedly connected to one end of the detection arm (13). After the detection arm (13) rotates, the sample bases (14) and the optical fiber bases (15) are arranged in one-to-one correspondence.

3. The nucleic acid and protein quantifier with a cleaning function according to claim 2, characterized in that, The driving component (21) includes two driving brackets (211), a slide rail (212), a slider (213), a threaded rod (214), a second motor bracket (215) and a second motor (216). The two driving brackets (211) are fixedly installed at the upper end of the detection main body (11). The two ends of the slide rail (212) are fixedly connected to the two driving brackets (211). The two ends of the threaded rod (214) are rotatably connected to the two driving brackets (211). The slider (213) is in limit sliding connection with the slide rail (212). The slider (213) is threadedly connected to the threaded rod (214). One end of the slider (213) is connected to the cleaning component (22). The second motor bracket (215) is fixedly installed at the rear end of the rear driving bracket (211). The second motor (216) is fixedly installed at the rear end of the second motor bracket (215). The output end of the second motor (216) is fixedly connected to one end of the threaded rod (214).

4. The nucleic acid and protein quantifier with a cleaning function according to claim 3, characterized in that, The cleaning component (22) includes a third motor bracket (221), a third motor (222), a slide electric cylinder (223), a suction cup cylinder (224), and a pneumatic slip ring (225). The third motor bracket (221) is fixedly connected to the left end of the slider (213). The upper end of the third motor bracket (221) is fixedly connected to the third motor (222). The main body of the slide electric cylinder (223) is rotatably connected to the lower end of the third motor bracket (221) through a conductive slip ring. The output end of the third motor (222) is fixedly connected to the main body of the slide electric cylinder (223). The lower end of the slide of the slide electric cylinder (223) is fixedly connected to the suction cup cylinder (224). The output end of the suction cup cylinder (224) is vertically downward. The pneumatic slip ring (225) is rotatably connected to the outside of the suction cup cylinder (224). The front end of the third motor bracket (221) is connected to the cleaning liquid component (23).

5. The nucleic acid and protein quantifier with a cleaning function according to claim 4, wherein The cleaning liquid component (23) includes a fixing block (231), an air inlet pipe (232), an air pump (233), a cleaning liquid tank (234), and a liquid outlet nozzle (235). The fixing block (231) is fixedly installed at the front end of the third motor bracket (221). The air inlet pipe (232) passes through the fixing block (231) and is fixedly connected to the air inlet of the air pump (233). The air inlet pipe (232) is fixedly connected to the fixing block (231). The lower end of the air pump (233) is fixedly connected to the cleaning liquid tank (234). The lower end of the cleaning liquid tank (234) is fixedly connected to the liquid outlet nozzle (235).

6. The nucleic acid and protein quantifier with a cleaning function according to claim 5, wherein The paper changing device (3) includes a paper collecting component (31) and a sealing component (32). The paper collecting component (31) is connected to the left end of the rear driving bracket (211). The sealing component (32) is installed at the upper end of the paper collecting component (31).

7. The nucleic acid and protein quantifier with a cleaning function according to claim 6, wherein The paper collecting component (31) includes a paper collecting frame (311), a cylinder (312), two pressing plates (313), a spring (314), and a waste paper slot (315). The paper collecting frame (311) is fixedly connected to the left end of the rear driving bracket (211). A circular groove for placing dust-free paper is formed on the paper collecting frame (311). The two pressing plates (313) are installed in the circular groove in a limited sliding manner. The two ends of the spring (314) are fixedly connected to the two pressing plates (313). The cylinder (312) is fixedly installed at the lower end of the paper collecting frame (311). The output end of the cylinder (312) is fixedly connected to the lower pressing plate (313). The waste paper slot (315) is formed at the upper end of the paper collecting frame (311). The waste paper slot (315) is located in front of the circular groove of the paper collecting frame (311). The upper end of the paper collecting frame (311) is connected to the sealing component (32).

8. The nucleic acid and protein quantifier with a cleaning function according to claim 7, characterized in that, The sealing assembly (32) includes a sealing cover (321), a sealing ring (322), a pressing block (323), a fourth motor bracket (324) and a fourth motor (325). One end of the sealing cover (321) is rotatably connected to the fourth motor bracket (324). A sealing ring (322) is fixedly installed at the lower end of the sealing cover (321). The lower end of the sealing ring (322) is in contact and sealing connection with the paper collecting frame (311). The fourth motor bracket (324) is fixedly installed at the upper end of the paper collecting frame (311). The fourth motor (325) is fixedly installed at the rear end of the fourth motor bracket (324). The output end of the fourth motor (325) is fixedly connected to the sealing cover (321). The pressing block (323) is fixedly installed at the lower end of the sealing cover (321).

Images