Testing device for heating assembly of laser printer

Abstract

The utility model discloses a device for testing a heating assembly of a laser printer, relates to the technical field of printers, and aims to solve the technical problems that a fuser is mounted in a printer to test the fuser, so that the test is troublesome and not convenient enough, and the working state of the fuser is difficult to observe visually. Comprising a fixing device body, a circulation assembly and a feeding and discharging assembly, the circulation assembly comprises a base and a tray, the bottom face of the tray is connected with a fixing column, a first motor is arranged on the side wall of the base, and the feeding and discharging assembly comprises a testing table, a feeding frame, a discharging frame and a second motor; the circumferential side wall of the test board is connected with a plurality of arc-shaped frame plates, and circulation channels are formed in the arc-shaped frame plates. The fixing device has the advantages that the operation process and effect of the fixing device can be visually observed, the convenience and effectiveness of testing the fixing device are improved, and repeated testing is facilitated.

Description

TECHNICAL FIELD

[0001] The present new type relates to the technical field of printers, more particularly, to a laser printer heating assembly testing device. BACKGROUND

[0002] The heating assembly of a laser printer, also known as a fuser, mainly includes a heating roller and a pressure roller. Its function is to pass the already transferred printing medium through the gap between the heating assembly heating roller and the pressure roller, and under high temperature and pressure, the toner that has been transferred to the paper is melted and pressed into the paper fibers, thus forming clear and durable images and text.

[0003] The heating roller is responsible for providing high temperature to melt the toner, and the pressure roller applies certain pressure to ensure that the toner is evenly embedded in the paper. The working performance of the fuser directly affects the printing quality and the stability of the printer. If the fuser fails, it may cause problems such as blurred printing images, toner falling off, and paper curling. In daily use, attention should be paid to selecting appropriate paper types to avoid using paper that is too thick or too thin, or paper with a too smooth or rough surface, in order to reduce damage to the fuser. At the same time, regular cleaning of the toner and debris left on the fuser also helps to extend its service life.

[0004] During the production of a laser printer, it is necessary to test the heating assembly, as its performance directly affects the fusing effect and printing quality of the printer. Through testing, it can be ensured that the heating assembly can reach the predetermined temperature and the temperature distribution is uniform, so that the toner can be fully melted and fixed on the paper, avoiding problems such as blurred printing images and toner falling off. Testing can also detect the heating assembly's temperature rise speed, temperature stability, and performance under different working conditions. This helps to identify potential faults or performance defects in advance, improves the overall quality and reliability of the printer, and reduces after-sales maintenance costs.

[0005] The existing laser printer heating assembly testing device, in order to test the use performance and use effect of the fuser, usually installs the fuser in the printer, then starts the printer to test, and during the testing process, the printed paper needs to be manually placed in the paper feeding channel, and the fuser needs to be tested for many times, so the staff needs to continuously place the printed paper in the paper feeding channel of the printer, which makes the testing process more troublesome and inconvenient, wastes printed paper, and it is difficult to directly observe the working state of the fuser. In view of this, we propose a laser printer heating assembly testing device. CONTENT OF THE INVENTION

[0006] The laser printer heating assembly testing device aims to solve the technical problem that it is inconvenient and difficult to observe the working state of the fixing device when the fixing device is installed in the printer.

[0007] To solve the above technical problems, the laser printer heating assembly testing device comprises a fixing device main body, a circulating assembly and an up and down feeding assembly.

[0008] The circulating assembly comprises a base, the top surface of the base is connected with a tray, the bottom surface of the tray is connected with a fixed column, the side wall of the base is provided with a motor one, the output end of the motor one penetrates through the bottom surface of the tray and is connected with a gear one, the output end of the gear one is engaged with a gear two, the shaft center position of the gear two is connected with a rotating bearing, and the gear two is rotationally connected with the fixed column through the rotating bearing.

[0009] The top surface of the rotating bearing is connected with a rotating support, the side wall of the rotating support is provided with a plurality of paper receiving discs, the bottom surface of the paper receiving disc is connected with a rotating disc, and the bottom surface of the rotating disc is rotationally connected with the top surface of the tray.

[0010] The up and down feeding assembly comprises a test table connected to the top surface of the fixed column, the top surface of the test table is provided with an up feeding frame, a down feeding frame and a motor two, the output end of the motor two is connected with a chain wheel one, the output end of the chain wheel one is engaged with a chain one, the output end of the chain one is engaged with a chain wheel two and a chain wheel three.

[0011] The chain wheel one is coaxially connected with a chain wheel four, the output end of the chain wheel four is engaged with a chain two, the output end of the chain two is engaged with a plurality of chain wheel fives, the chain wheel four and the plurality of chain wheel fives are rotationally connected to the side wall of the down feeding frame through a rotating shaft, and the rotating shafts of the chain wheel four and the plurality of chain wheel fives are provided with a transmission belt one.

[0012] The chain wheel three is coaxially connected with a chain wheel six, the output end of the chain wheel six is engaged with a chain three, the output end of the chain three is engaged with a plurality of chain wheel sevens, the chain wheel six and the plurality of chain wheel sevens are rotationally connected to the side wall of the up feeding frame through a rotating shaft, and the rotating shafts of the chain wheel six and the plurality of chain wheel sevens are provided with a transmission belt two.

[0013] The side wall of the down feeding frame is provided with an upper guide plate and a lower guide plate, a down feeding channel is formed between the upper guide plate and the lower guide plate, and the outlet of the down feeding channel is aligned with the top surface of the transmission belt one.

[0014] The side wall of the up feeding frame is provided with the same structural assembly as the side wall of the down feeding frame, forming an up feeding channel, and the inlet of the up feeding channel is aligned with the top surface of the transmission belt two.

[0015] The test bench circumferential side wall is connected with a plurality of arc-shaped frame plates, the lower side wall of the arc-shaped frame plate is connected with the tray circumferential outer wall, and the arc-shaped frame plate is internally formed with a circulating channel;

[0016] The top surface of the arc-shaped frame plate is provided with a motor three, the output end of the motor three is connected with a rotating column, the circumferential side wall of the rotating column is sleeved with a feeding column, the circumferential side wall of the feeding column is provided with a plurality of rotating plates, and every two rotating plates are rotationally connected with a rolling column one;

[0017] The top surface of the receiving disc is provided with a paper placing groove, a plurality of rolling columns two are arranged in the paper placing groove, and the top surface of the paper placing groove is connected with a guide plate.

[0018] Preferably, the fixing device body comprises a heating roller and a pressure roller, and a printing paper channel is formed between the heating roller and the pressure roller.

[0019] Preferably, the rotating disc is a circular ring structure matched with the shape of the top surface of the tray, and the top surface of the rotating disc is tightly welded with the bottom surface of the receiving disc.

[0020] Preferably, the top surface of the test bench is provided with a fixing frame one and a fixing frame two, and the fixing frame one and the fixing frame two are provided with the fixing device body.

[0021] Preferably, the feeding channel of the feeding frame is aligned with the printing paper channel, and the printing paper channel is aligned with the discharging channel of the discharging frame.

[0022] Preferably, the bottom surface of the upper guide plate is inclined, the top surface of the lower guide plate is inclined, and the upper guide plate and the lower guide plate are distributed in a scissor-shaped structure.

[0023] Preferably, the outer side wall of the arc-shaped frame plate is a semicircular arc structure, and a plurality of the circulating channels are combined to form a circular structure channel.

[0024] Preferably, the top surface of the arc-shaped frame plate is provided with a fixed side plate one, the top surface of another arc-shaped frame plate is provided with a fixed side plate two corresponding to the fixed side plate one, the fixed side plate one and the fixed side plate two are rotationally provided with the rotating column, and the rotating column is provided below the receiving disc.

[0025] Preferably, the top surface of the guide plate is a circular arc surface structure, and the upper side wall of the guide plate is aligned with the side wall of the feeding frame.

[0026] Preferably, the use method of the laser printer heating assembly test device comprises the following steps:

[0027] S1, fixing device installation opening, the fixing device main body to be detected is installed between fixed frame one and fixed frame two, powered by external power supply, the fixing device main body starts to work, the heating roller and the pressure roller in the inside heat and pressurize work;

[0028] S2, paper, the printing paper is placed in the paper slot of the paper tray;

[0029] S3, feeding, through the work of motor three, drive the rotating column to rotate, make the feeding column rotate, the rotating plate of the feeding column side wall drives the roller one to contact and rotate on the top surface of the printing paper in the paper slot, cooperate with the plurality of roller two in the paper slot, move the printing paper to the direction of the guide plate, be affected by the arc surface structure of the top surface of the guide plate, make the printing paper move along the top surface of the guide plate to the top surface of the conveying belt two in the feeding frame, at this time, through the rotation of the sprocket one and the sprocket four driven by the motor two, further through the sprocket four to drive the conveying belt two to transmit, move the printing paper to the feeding channel of the feeding frame, finally enter the printing paper channel of the fixing device main body, and carry out test work;

[0030] S4, discharging, after the printing paper is tested by the fixing device main body, it is transmitted into the discharging channel of the discharging frame from the printing paper channel, at this time, the motor two drives the sprocket one, the sprocket three and the sprocket six to rotate, further drives the transmission belt one in the discharging frame to transmit, transmits the printing paper in the discharging channel to the paper slot of the paper tray;

[0031] S5, cycle test, through the work of motor one, drive the gear one and the gear two to rotate, further drive the rotating support to rotate, at this time, the paper tray rotates along the circulation channel inside the arc frame plate, the new paper tray rotates to the lower of the feeding frame, and through the feeding operation, the new printing paper is transmitted to the feeding channel of the feeding frame, finally enters the printing paper channel of the fixing device main body, and carries out new test work, through the rotation of the four paper trays in the circulation channel, the tested printing paper can be continuously transmitted to the feeding frame for repeated test.

[0032] Compared with the prior art, the beneficial effects of the present application are:

[0033] 1、The novel is through the motor three work, drive the feeding column rotation, the rotating plate of the feeding column side wall drives the printing paper top surface in the roller one in the paper slot to contact and rotate, cooperate with the multiple roller two in the paper slot, move the printing paper to the guide plate direction, be affected by the arc surface structure of the top surface of the guide plate, make the printing paper move along the top surface of the guide plate to the top surface of the transmission belt two in the feeding frame, at this time, through the motor two drive the sprocket one and the sprocket four rotation, further through the sprocket four drive the transmission belt two to carry out transmission work, move the printing paper to the feeding channel of the feeding frame, finally enter the printing paper channel of the fixing device main body, carry out test work, after the printing paper passes the test of the fixing device main body, is transmitted into the discharging channel of the discharging frame from the printing paper channel, at this time, the motor two drives the sprocket one, the sprocket three and the sprocket six rotation, further drive the transmission belt one in the discharging frame to carry out transmission work, transmit the printing paper in the discharging channel to the paper receiving disc paper slot, through the automatic feeding and discharging of the printing paper, test the fixing device main body of the printer heating assembly, without installing the fixing device main body in the printer to test, through the device, the running process and effect of the fixing device can be observed directly, improve the convenience and effectiveness of the fixing device test, solve the problem that the fixing device is installed in the printer to test the fixing device, which leads to more troublesome test, is not convenient, and the working state of the fixing device is difficult to observe directly.

[0034] 2、The novel is also through the motor one work, drive the gear one and the gear two rotation, further drive the rotating support rotation, at this time, the paper receiving disc rotates along the circulating channel inside the arc frame plate, the new paper receiving disc rotates to below the feeding frame, and through the feeding operation, the new printing paper is transmitted to the feeding channel of the feeding frame, finally enters the printing paper channel of the fixing device main body, carries out new test work, through the rotation of the four paper receiving discs in the circulating channel, the tested printing paper can be continuously transmitted to the feeding frame for repeated test, which can improve the test effect of the fixing device and save paper.

[0035] 3、The novel is also through the design of the arc frame plate, when the paper receiving disc rotates along the circulating channel inside the arc frame plate, the top surface in the arc frame plate can be tightly above the paper receiving disc, which can ensure that the printing paper in the paper receiving disc of the paper receiving disc can be stably and firmly transmitted, avoid the wind generated during the rotation of the paper receiving disc, blow away the printing paper, thereby interrupting the test work of the fixing device main body, further improve the stability of the printing paper in the test process. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is the overall structure schematic diagram of the novel;

[0037] Figure 2 It is the overall structure split schematic diagram of the novel;

[0038] Figure 3 Structure diagram of part of the circulating assembly of the new type Figure 1 ;

[0039] Figure 4 Structure diagram of the feeding column of the new type

[0040] Figure 5 Structure diagram of part of the circulating assembly of the new type Figure 2 ;

[0041] Figure 6 Structure diagram of the paper receiving tray of the new type

[0042] Figure 7 Structure diagram of the feeding and discharging assembly of the new type

[0043] Figure 8 Structure diagram of the discharging frame of the new type

[0044] Explanation of the reference numerals in the drawings:

[0045] 1, fixing device main body; 2, circulating assembly; 3, feeding and discharging assembly

[0046] 101, fixed frame one; 102, fixed frame two

[0047] 201, base; 202, motor one; 203, gear one; 204, gear two; 205, rotating bearing; 206, fixed column; 207, tray; 208, rotating disc; 209, paper receiving tray; 2091, paper placing groove; 2092, roller two; 2093, guide plate; 210, rotating support

[0048] 301, test table; 302, feeding frame; 303, discharging frame; 304, motor two; 305, chain wheel one; 306, chain one; 307, chain wheel two; 308, chain wheel three; 309, chain wheel four; 310, chain two; 311, chain wheel five; 312, transmission belt one; 313, chain wheel six; 314, chain three; 315, chain wheel seven; 316, transmission belt two; 317, upper guide plate; 318, lower guide plate; 319, motor three; 320, rotating column; 321, feeding column; 322, rotating plate; 323, roller one; 324, fixed side plate one; 325, fixed side plate two

[0049] 401, arc-shaped frame plate; 402, circulating channel DETAILED DESCRIPTION

[0050] As shown in Figures 1 to 8 the accompanying drawings, the laser printer heating assembly testing device of the new type comprises a fixing device main body 1, a circulating assembly 2, and a feeding and discharging assembly 3

[0051] In the embodiment of the present application, the fixing device main body 1 comprises a heating roller and a pressure roller, a printing paper channel is formed between the heating roller and the pressure roller, the circulating assembly 2 comprises a plurality of paper receiving plates 209, the top surface of each paper receiving plate 209 is provided with a paper placing groove 2091, a plurality of rollers 2092 are arranged in the paper placing groove 2091, a guide plate 2093 is connected to the top surface of the paper placing groove 2091, the top surface of the guide plate 2093 is a circular arc surface structure, and the upper side wall of the guide plate 2093 is aligned with the side wall of the feeding frame 302;

[0052] The feeding and discharging assembly 3 comprises a test table 301, the top surface of the test table 301 is provided with a feeding frame 302, a discharging frame 303 and a second motor 304, the output end of the second motor 304 is connected with a chain wheel one 305, the output end of the chain wheel one 305 is engaged with a chain one 306, the output end of the chain one 306 is engaged with a chain wheel two 307 and a chain wheel three 308, the chain wheel one 305 is coaxially connected with a chain wheel four 309, the output end of the chain wheel four 309 is engaged with a chain two 310, the output end of the chain two 310 is engaged with a plurality of chain wheel fives 311, the chain wheel four 309 and the plurality of chain wheel fives 311 are rotatably connected to the side wall of the discharging frame 303 through shafts, the shafts of the chain wheel four 309 and the plurality of chain wheel fives 311 are provided with a conveying belt one 312, the chain wheel three 308 is coaxially connected with a chain wheel six 313, the output end of the chain wheel six 313 is engaged with a chain three 314, the output end of the chain three 314 is engaged with a plurality of chain wheel sevens 315, the chain wheel six 313 and the plurality of chain wheel sevens 315 are rotatably connected to the side wall of the feeding frame 302 through shafts, the shafts of the chain wheel six 313 and the plurality of chain wheel sevens 315 are provided with a conveying belt two 316, the side wall of the discharging frame 303 is provided with an upper guide plate 317 and a lower guide plate 318, a discharging channel is formed between the upper guide plate 317 and the lower guide plate 318, the outlet of the discharging channel is aligned with the top surface of the conveying belt one 312, the side wall of the feeding frame 302 is provided with the same structural assembly as the side wall of the discharging frame 303, forming a feeding channel, the inlet of the feeding channel is aligned with the top surface of the conveying belt two 316, the circumferential side wall of the test table 301 is connected with a plurality of arc-shaped frame plates 401, the lower side wall of each arc-shaped frame plate 401 is connected with the circumferential outer wall of the tray 207, a circulating channel 402 is formed in each arc-shaped frame plate 401, the top surface of each arc-shaped frame plate 401 is provided with a third motor 319, the output end of the third motor 319 is connected with a rotating column 320, the circumferential side wall of the rotating column 320 is sleeved with a feeding column 321, the circumferential side wall of the feeding column 321 is provided with a plurality of rotating plates 322, a roller one 323 is rotatably connected between every two rotating plates 322, the top surface of each arc-shaped frame plate 401 is provided with a fixed side plate one 324, the top surface of the other arc-shaped frame plate 401 is provided with a fixed side plate two 325 corresponding to the fixed side plate one 324, the rotating column 320 is rotatably arranged between the fixed side plate one 324 and the fixed side plate two 325, and the rotating column 320 is provided below the paper receiving plate 209;

[0053] The novel type is through the work of motor three 319, drives the feeding column 321 to rotate, the rotating plate 322 of the side wall of the feeding column 321 drives the roller one 323 to contact and rotate in the top surface of the printing paper in the paper discharge groove 2091, cooperates with a plurality of roller two 2092 in the paper discharge groove 2091, moves the printing paper to the direction of the guide plate 2093, is influenced by the arc surface structure of the top surface of the guide plate 2093, makes the printing paper move along the top surface of the guide plate 2093 to the top surface of the conveying belt two 316 in the feeding frame 302, at this time, through the motor two 304 drives the sprocket one 305 and the sprocket four 309 to rotate, further through the sprocket four 309 drives the conveying belt two 316 to carry out transmission work, moves the printing paper to the feeding channel of the feeding frame 302, finally enters the printing paper channel in the fuser main body 1, carries out test work, after the printing paper passes through the test of the fuser main body 1, is transmitted into the discharging channel of the discharging frame 303 from the printing paper channel, at this time, the motor two 304 drives the sprocket one 305, the sprocket three 308 and the sprocket six 313 to rotate, further drives the conveying belt one 312 in the discharging frame 303 to carry out transmission work, transmits the printing paper in the discharging channel to the paper discharge groove 2091 of the paper receiving disc 209, through the automatic feeding and discharging of the printing paper, the fuser main body 1 of the heating assembly of the printer is tested, without installing the fuser main body 1 in the printer to test, through the device, the running process and effect of the fuser main body 1 can be directly observed, the convenience and effectiveness of the test of the fuser main body 1 are improved.

[0054] In the embodiment of the present application, the circulating assembly 2 comprises a base 201, a tray 207 is connected to the top surface of the base 201, a fixed column 206 is connected to the bottom surface of the tray 207, a motor one 202 is arranged on the side wall of the base 201, the output end of the motor one 202 penetrates through the bottom surface of the tray 207 and is connected with a gear one 203, the output end of the gear one 203 is engaged with a gear two 204, a rotating bearing 205 is connected to the shaft center position of the gear two 204, the gear two 204 is rotatably connected with the fixed column 206 through the rotating bearing 205, and a rotating support 210 is connected to the top surface of the rotating bearing 205.

[0055] The novel type is through the work of motor one 202, drives the gear one 203 and the gear two 204 to rotate, further drives the rotating support 210 to rotate, at this time, the paper receiving disc 209 rotates along the circulating channel 402 inside the arc frame plate 401, the new paper receiving disc 209 rotates to below the feeding frame 302, and through the feeding operation, the new printing paper is transmitted to the feeding channel of the feeding frame 302, finally enters the printing paper channel of the fuser main body 1, carries out new test work, through the rotation of the four paper receiving discs 209 in the circulating channel 402, the tested printing paper can be continuously and continuously transmitted to the feeding frame 302 for repeated testing, which can improve the test effect of the fuser main body 1 and save paper.

[0056] As another embodiment of the present new type, the bottom surface of the paper receiving tray 209 is connected with the rotating disc 208, the top surface of the tray 207 is rotationally connected with the bottom surface of the rotating disc 208, the rotating disc 208 is a circular ring structure matched with the shape of the top surface of the tray 207, and the top surface of the rotating disc 208 is tightly welded with the bottom surface of the paper receiving tray 209. When the paper receiving tray 209 rotates along the circulating channel 402 inside the arc-shaped frame plate 401, the rotating disc 208 at the bottom of the paper receiving tray 209 rotates on the top surface of the tray 207, thereby ensuring the stability of the rotation of the paper receiving tray 209.

[0057] As another embodiment of the present new type, the top surface of the test table 301 is provided with the fixing frame one 101 and the fixing frame two 102, and the fixing frame one 101 and the fixing frame two 102 are provided with the fuser main body 1, so that the installation structure is more stable during the test.

[0058] As another embodiment of the present new type, the feeding channel of the feeding frame 302 is aligned with the printing paper channel, the printing paper channel is aligned with the discharging channel of the discharging frame 303, the bottom surface of the upper guide plate 317 is inclined, the top surface of the lower guide plate 318 is inclined, the upper guide plate 317 and the lower guide plate 318 are distributed in a scissor-shaped structure, and the printing paper can be more easily fed into the discharging channel through the scissor-shaped structure.

[0059] As another embodiment of the present new type, the outer side wall of the arc-shaped frame plate 401 is a semicircular arc structure, and a plurality of circulating channels 402 are combined to form a circular structure channel. The present new type further designs the arc-shaped frame plate 401, so that when the paper receiving tray 209 rotates along the circulating channel 402 inside the arc-shaped frame plate 401, the inner top surface of the arc-shaped frame plate 401 can tightly abut above the paper receiving tray 209, thereby ensuring that the printing paper in the paper discharge slot 2091 of the paper receiving tray 209 can be stably and firmly transmitted, avoiding the generation of wind force during the rotation of the paper receiving tray 209, blowing away the printing paper, thereby interrupting the test work on the fuser main body 1, and further improving the stability of the printing paper during the test.

[0060] Working Principle: This embodiment provides a laser printer heating component testing device. In use, the fuser body 1 to be tested is installed between the first fixing frame 101 and the second fixing frame 102. Powered by an external power supply, the fuser body 1 begins operation. The internal heating rollers and pressure rollers heat and pressurize the fuser body 1. Printing paper is placed in the paper tray 2091 of the paper receiving tray 209. Motor 319 drives the rotating column 320 to rotate, causing the feeding column 321 to rotate. The rotating plate 322 on the side wall of the feeding column 321 drives the roller 323 to rotate in the paper tray 2091. The top surface of the printing paper in the paper tray 2091 contacts and rotates, cooperating with multiple rollers 2092 in the paper tray 2091 to move the printing paper towards the guide plate 2093. Influenced by the arc-shaped surface structure of the top surface of the guide plate 2093, the printing paper moves along the top surface of the guide plate 2093 towards the top surface of the conveyor belt 316 in the feeding frame 302. At this time, the motor 304 drives the sprocket 305 and sprocket 309 to rotate, and the sprocket 309 further drives the conveyor belt 316 to carry out the conveying work, putting the printing paper into the feeding channel of the feeding frame 302. The paper moves inward and eventually enters the paper channel of the fuser body 1 for testing. After the paper passes through the fuser body 1 for testing, it is transferred from the paper channel into the feeding channel of the feeding frame 303. At this time, motor 2 304 drives sprocket 1 305, sprocket 308, and sprocket 6 313 to rotate, further driving the conveyor belt 1 312 in the feeding frame 303 to transfer the paper in the feeding channel to the paper tray 2091 of the receiving tray 209. Motor 1 202 drives gear 1 203 and gear 2 204 to rotate. The rotation further drives the rotating bracket 210 to rotate. At this time, the paper receiving tray 209 rotates along the circulation channel 402 inside the arc frame plate 401. The new paper receiving tray 209 rotates to the bottom of the feeding frame 302 and, through the feeding operation, transfers the new printing paper to the feeding channel of the feeding frame 302, and finally enters the printing paper channel of the fuser body 1 for new testing. By rotating the four paper receiving trays 209 in the circulation channel 402, the tested printing paper can be continuously transferred to the feeding frame 302 for repeated testing.

[0061] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this invention based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A laser printer heating assembly testing device, characterized by, Including fixing body (1), circulating assembly (2), loading and unloading assembly (3); The circulating assembly (2) comprises a base (201), the top surface of the base (201) is connected with a tray (207), the bottom surface of the tray (207) is connected with a fixed column (206), the side wall of the base (201) is provided with a motor one (202), the output end of the motor one (202) penetrates the bottom surface of the tray (207) and is connected with a gear one (203), the output end of the gear one (203) is engaged with a gear two (204), the axial position of the gear two (204) is connected with a rotating bearing (205), and the gear two (204) is rotationally connected with the fixed column (206) through the rotating bearing (205); The rotating bearing (205) is connected with a rotating support (210), a plurality of paper receiving discs (209) are arranged on the side wall of the rotating support (210), the bottom surface of the paper receiving disc (209) is connected with a rotating disc (208), and the top surface of the rotating disc (208) is rotationally connected with the bottom surface of the tray (207); The loading and unloading assembly (3) comprises a test table (301) connected to the top surface of the fixed column (206), the top surface of the test table (301) is provided with a loading frame (302), a discharging frame (303) and a motor two (304), the output end of the motor two (304) is connected with a chain wheel one (305), the output end of the chain wheel one (305) is engaged with a chain one (306), the output end of the chain one (306) is engaged with a chain wheel two (307) and a chain wheel three (308); The chain wheel one (305) is coaxially connected with a chain wheel four (309), the output end of the chain wheel four (309) is engaged with a chain two (310), the output end of the chain two (310) is engaged with a plurality of chain wheel fives (311), the chain wheel four (309) and the plurality of chain wheel fives (311) are rotationally connected to the side wall of the discharging frame (303) through rotating shafts, and the rotating shafts of the chain wheel four (309) and the plurality of chain wheel fives (311) are provided with a conveying belt one (312); The chain wheel three (308) is coaxially connected with a chain wheel six (313), the output end of the chain wheel six (313) is engaged with a chain three (314), the output end of the chain three (314) is engaged with a plurality of chain wheel sevens (315), the chain wheel six (313) and the plurality of chain wheel sevens (315) are rotationally connected to the side wall of the loading frame (302) through rotating shafts, and the rotating shafts of the chain wheel six (313) and the plurality of chain wheel sevens (315) are provided with a conveying belt two (316); The side wall of the discharging frame (303) is provided with an upper guide plate (317) and a lower guide plate (318), a discharging channel is formed between the upper guide plate (317) and the lower guide plate (318), and the outlet of the discharging channel is aligned with the top surface of the conveying belt one (312); The side wall of the loading frame (302) is provided with the same structural assembly as the side wall of the discharging frame (303), forming a loading channel, and the inlet of the loading channel is aligned with the top surface of the conveying belt two (316); The test platform (301) is connected with a plurality of arc-shaped frame plates (401) on the circumferential side wall, the lower side wall of the arc-shaped frame plate (401) is connected with the circumferential outer wall of the tray (207), and the arc-shaped frame plate (401) forms a circulating channel (402) inside. The top surface of the arc-shaped frame plate (401) is provided with a motor three (319), the output end of the motor three (319) is connected with a rotating column (320), the circumferential side wall of the rotating column (320) is sleeved with a feeding column (321), the circumferential side wall of the feeding column (321) is provided with a plurality of rotating plates (322), and every two rotating plates (322) are rotatably connected with a rolling column one (323). The top surface of the receiving tray (209) is provided with a paper placing groove (2091), a plurality of rolling column two (2092) are arranged in the paper placing groove (2091), and the top surface of the paper placing groove (2091) is connected with a guide plate (2093).

2. The laser printer heating assembly testing device of claim 1, wherein, The inside of the fixing device main body (1) comprises a heating roller and a pressure roller, and a printing paper channel is formed between the heating roller and the pressure roller.

3. The laser printer heating assembly testing device of claim 2, wherein, The rotating disc (208) is a circular ring structure matched with the top surface shape of the tray (207), and the top surface of the rotating disc (208) is tightly welded with the bottom surface of the receiving tray (209).

4. The laser printer heating assembly testing device of claim 3, wherein, The top surface of the test platform (301) is provided with a fixed frame one (101) and a fixed frame two (102), and the fixed frame one (101) and the fixed frame two (102) are provided with the fixing device main body (1) therebetween.

5. The laser printer heating assembly testing device of claim 4, wherein, The feeding channel of the feeding frame (302) is aligned with the printing paper channel, and the printing paper channel is aligned with the discharging channel of the discharging frame (303).

6. The laser printer heating assembly testing device of claim 5, wherein, The bottom surface of the upper guide plate (317) is inclined, the top surface of the lower guide plate (318) is inclined, and the upper guide plate (317) and the lower guide plate (318) are distributed in a scissor-shaped structure.

7. The laser printer heating assembly testing device of claim 6, wherein, The outer side wall of the arc-shaped frame plate (401) is a semicircular arc structure, and a plurality of circulating channels (402) are combined to form a circular structure channel.

8. The laser printer heating assembly testing device of claim 7, wherein, The top surface of the arc-shaped frame plate (401) is provided with a fixed side plate one (324), and the top surface of the other arc-shaped frame plate (401) is provided with a fixed side plate two (325) corresponding to the fixed side plate one (324), the rotating column (320) is rotatably arranged between the fixed side plate one (324) and the fixed side plate two (325), and the receiving tray (209) is arranged below the rotating column (320).

9. The laser printer heating assembly testing device of claim 8, wherein, The top surface of the guide plate (2093) is a circular arc surface structure, and the upper side wall of the guide plate (2093) is aligned with the side wall of the feeding frame (302).

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