Double-sided laser printer

Abstract

The invention relates to the technical field of double-sided laser printing equipment, in particular to a double-sided laser printer. Comprising a main machine frame, a heat conduction bottom shell detachably connected with the main machine frame, a power unit arranged on the heat conduction bottom shell, a paper feeding disc slidably connected with the main machine frame, a paper filing shaft with one end rotationally connected with the heat conduction bottom shell and a paper filing wheel detachably fixed to the outer wall of the paper filing shaft. A temperature adjusting unit used for adjusting temperature is fixedly connected to the heat conduction bottom shell, and a heat conduction flow channel is formed in the heat conduction bottom shell. The temperature adjusting unit is additionally arranged on the heat conduction bottom shell, and the temperature of components connected with the heat conduction bottom shell is controlled through work of the temperature adjusting unit, so that structures such as the power unit are kept at the set working temperature, the operation stability of the power mechanism is guaranteed, and the defects of paper conveying blockage, fixing deviation and the like caused by too low temperature are overcome.

Description

Technical Field

[0001] The invention relates to the technical field of double-sided laser printing equipment, and in particular to a double-sided laser printer. Background Art

[0002] A double-sided laser printer is a device that uses physical and chemical principles such as light, electricity, and heat to form visible images on the front and back of a paper through steps such as charging, exposure, development, transfer, fixing, and cleaning.

[0003] At present, in medium and low speed laser printing equipment, the structure of the printing equipment is complex, and it usually has an independent power mechanism, which can provide driving force for charging, exposure, development, transfer, fixing, cleaning and other mechanisms. Due to the complex structure of this printing equipment, the power mechanism is greatly affected by the environment. When the temperature is lower than 15 degrees Celsius, the transmission of the power mechanism is affected, causing problems such as paper delivery jamming and fixing offset. Summary of the invention

[0004] In view of this, the purpose of the present invention is to propose a double-sided laser printer to solve the problem that the power mechanism of the printing equipment is greatly affected by the environment. When the temperature is lower than the set temperature, the transmission of the power mechanism is affected, causing paper transportation jams and fixing deviations.

[0005] Based on the above purpose, the present invention provides a double-sided laser printer, including a main frame, a heat-conductive bottom shell detachably connected to the main frame, a power unit installed on the heat-conductive bottom shell, a paper feed tray slidably connected to the main frame, a paper folding shaft rotatably connected to the heat-conductive bottom shell at one end, and a paper folding wheel detachably fixed to the outer wall of the paper folding shaft, the power unit has a power motor, a temperature adjustment unit for adjusting the temperature is fixedly connected to the heat-conductive bottom shell, a heat-conductive bottom shell has a heat-conductive flow channel, the heat-conductive flow channel is filled with a temperature transfer medium, the heat-conductive bottom shell is provided with a motor installation area for installing a power motor, a paper folding shaft installation area and a temperature adjustment installation area for installing a temperature adjustment unit, and the heat-conductive flow channel passes through the motor installation area, the paper folding installation area and the temperature adjustment installation area.

[0006] In an optional example, a plurality of bent connection portions are provided at one end of the heat-conductive bottom shell facing the main frame, a certain distance is provided between the heat-conductive bottom shell and the main frame, and the heat-conductive bottom shell is combined with the main frame to form an installation cavity for installing the power unit, and the power motor is installed at the end of the heat-conductive bottom shell facing away from the main frame.

[0007] In an optional example, the heat-conductive bottom shell includes a heat-conductive shell 1 and a heat-conductive shell 2 fixedly connected to each other, the bent connection portion and the heat-conductive shell 1 are formed in one piece, a heat-conductive groove 1 is provided at one end of the heat-conductive shell 1 facing the main frame, the heat-conductive shell 2 is fixed to the end of the heat-conductive shell 1 facing the main frame, the heat-conductive shell 2 is used to seal the heat-conductive groove 1, and is combined with the heat-conductive groove 1 to form a heat-conductive flow channel, and the motor installation area and the temperature control installation area are provided at the end of the heat-conductive shell 1 facing away from the main frame.

[0008] In an optional example, a first motor through hole penetrating through heat-conducting shell one is provided in the motor mounting area, a second motor through hole matching the first motor through hole is provided on heat-conducting shell two, and a connecting flange one is provided at one end of the second motor through hole facing heat-conducting groove one, and the connecting flange one is fixedly connected to heat-conducting groove one.

[0009] In an optional example, a heat conducting groove 2 is provided at one end of the heat conducting shell 2 facing the heat conducting shell 1. The heat conducting groove 2 is located in the motor installation area and is combined with the heat conducting groove 1 to form a storage cavity for storing temperature transfer medium.

[0010] In an optional example, a first paper through hole penetrating through the heat-conducting shell one is opened in the paper installation area, a second paper through hole matching the first paper through hole is opened on the heat-conducting shell two, and a connecting flange two is provided at one end of the heat-conducting shell two facing the heat-conducting shell one, and the connecting flange two is fixedly connected to the heat-conducting groove one.

[0011] In an optional example, the temperature control unit includes a semiconductor temperature control module, a heat exchange plate, a temperature control shell and a fan, one end of the semiconductor temperature control module is fixedly connected to an end of the heat conductive shell facing away from the main frame, the temperature control shell is fixedly connected to the heat conductive shell, the heat exchange plate is fixedly connected to the other end of the semiconductor temperature control module, a temperature control channel is provided in the temperature control shell, the fan is fixedly connected to the temperature control shell, and the temperature control channel passes through the heat exchange plate and the fan.

[0012] In an optional example, the heat exchange plate is provided with a guide groove arranged along the direction of the temperature regulating channel.

[0013] In an optional example, the temperature control unit also includes a paper heating bracket, a heat-conductive sliding female block and a heat-conductive sliding male block. The paper heating bracket is fixed in the paper feed tray, the heat-conductive sliding female block is fixedly connected to the paper feed tray, the heat-conductive sliding male block is fixedly connected to the heat-conductive shell, a sliding groove is provided on the heat-conductive sliding female block along the moving direction of the paper feed tray, and the heat-conductive sliding male block can be slidably inserted in the sliding groove.

[0014] In an optional example, an isolation flange is provided at one end of the heat-conducting housing 2 facing a direction of the heat-conducting groove, and the isolation flange is provided along the direction of the heat-conducting flow channel.

[0015] The beneficial effects of the present invention are as follows: by adding a temperature regulating unit to the heat-conducting bottom shell, the temperature of the components connected to the heat-conducting bottom shell is controlled through the operation of the temperature regulating unit, so that the power unit and other structures are maintained at the set working temperature, thereby ensuring the stability of the operation of the power mechanism and avoiding defects such as paper conveying jams and fixing offsets caused by too low temperature. At the same time, a heat-conducting flow channel is added in the heat-conducting bottom shell, and the heat transfer of the heat-conducting bottom shell is made more uniform through the flow of temperature transfer medium, thereby avoiding heat concentration, further improving the stability of the operation of the double-sided laser printer. In addition, this example can add structures such as the heat-conducting bottom shell without changing the overall structure of the existing double-sided laser printer, and has a lower manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of a double-sided laser printer;

[0018] Figure 2 Schematic diagram of the three-dimensional structure of an embodiment of the present invention Figure 1 ;

[0019] Figure 3 Schematic diagram of the three-dimensional structure in the embodiment of the present invention Figure 2 ;

[0020] Figure 4 It is a schematic diagram of the explosion structure in an embodiment of the present invention;

[0021] Figure 5 A schematic diagram of the three-dimensional structure of the heat-conducting bottom shell in an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the exploded structure of the heat-conducting bottom shell in an embodiment of the present invention;

[0023] Figure 7 This is a front view of the heat-conducting bottom shell in an embodiment of the present invention;

[0024] Figure 8 for Figure 7 Sectional view of AA in the middle;

[0025] Fig. 9 for Figure 7Cross-sectional view of the middle BB;

[0026] Fig.10 Schematic diagram of the three-dimensional structure of the heat-conducting housing 2 in the embodiment of the present invention.

[0027] The markings in the figure are: 1, main frame; 2, heat-conducting bottom shell; 201, heat-conducting flow channel; 202, motor installation area; 203, paper-folding installation area; 204, temperature adjustment installation area; 205, bending connection part; 21, heat-conducting shell 1; 211, heat-conducting groove 1; 212, first motor through hole; 213, first paper-folding through hole; 22, heat-conducting shell 2; 221, second motor through hole; 222, connecting flange 1; 223, Heat conduction groove 2; 224, second paper folding hole; 225, connecting flange 2; 226, isolation flange; 3, paper feed tray; 4, paper folding shaft; 5, paper folding wheel; 6, power motor; 7, temperature control unit; 71, semiconductor temperature control module; 72, heat exchange plate; 721, guide groove; 73, temperature control shell; 731, temperature control channel; 74, fan; 75, paper heating bracket; 76, heat conduction sliding female block; 77, heat conduction sliding male block. DETAILED DESCRIPTION

[0028] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0029] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0030] In one embodiment, see Figures 1 to 4As shown, a double-sided laser printer provided by the present invention comprises a main frame 1, a heat-conducting bottom shell 2 detachably connected to the main frame 1, a power unit mounted on the heat-conducting bottom shell 2, a paper feed tray 3 slidably connected to the main frame 1, a paper-folding shaft 4 rotatably connected to the heat-conducting bottom shell 2 at one end, and a paper-folding wheel 5 detachably fixed to the outer wall of the paper-folding shaft 4, and the power unit has a power motor 6. Among them, a laser scanning unit, a toner drum unit, a transfer unit, a paper feeding unit and a fixing unit are also mounted on the main frame 1; the power unit also has a transmission gear set and a clutch assembly; the heat-conducting bottom shell 2 and the paper-folding shaft 4 are both made of metal materials with good thermal conductivity, such as iron alloy, copper alloy, aluminum alloy, etc.

[0031] The heat-conducting bottom shell 2 is fixedly connected with a temperature-adjusting unit 7 for adjusting the temperature. The heat-conducting bottom shell 2 has a heat-conducting flow channel 201 filled with a temperature transfer medium. The heat-conducting bottom shell 2 is provided with a motor installation area 202 for installing the power motor 6, a paper-folding installation area 203 for installing the paper-folding shaft 4, and a temperature-adjusting installation area 204 for installing the temperature-adjusting unit 7. The heat-conducting flow channel 201 passes through the motor installation area 202, the paper-folding installation area 203, and the temperature-adjusting installation area 204. Among them, the temperature-transferring medium adopts a liquid heat transfer medium, such as a mixed liquid, cooling oil, etc.; the temperature-adjusting unit 7 changes its own temperature according to the actual temperature, and the heat is transferred to the temperature transfer medium through the temperature-adjusting installation area 204. The temperature transfer medium flows to the motor installation area 202 and the paper-folding installation area 203 through the heat-conducting flow channel 201, and transfers the heat to the motor installation area 202 and the paper-folding installation area 203.

[0032] Specifically, this example adds a temperature control unit 7 to the heat-conducting bottom shell 2. Through the operation of the temperature control unit 7, the temperature of the components connected to the heat-conducting bottom shell 2 is controlled, so that the power unit and other structures are maintained at the set working temperature, thereby ensuring the stability of the operation of the power mechanism and avoiding defects such as paper conveying jams and fixing offsets caused by too low temperature. At the same time, a heat-conducting flow channel 201 is added to the heat-conducting bottom shell 2. Through the flow of temperature transfer medium, the heat transfer of the heat-conducting bottom shell 2 is made more uniform, avoiding heat concentration, and further improving the stability of the operation of the double-sided laser printer. In addition, this example can add structures such as the heat-conducting bottom shell 2 without changing the overall structure of the existing double-sided laser printer, and has a lower manufacturing cost.

[0033] In an alternative example, see Figures 1 to 4 As shown, a plurality of bent connection portions 205 are provided at one end of the heat-conducting bottom shell 2 facing the main frame 1. There is a certain distance between the heat-conducting bottom shell 2 and the main frame 1, and the heat-conducting bottom shell 2 is combined with the main frame 1 to form an installation cavity for installing the power unit. The power motor 6 is installed on the end of the heat-conducting bottom shell 2 facing away from the main frame 1 by bolt connection.

[0034] Specifically, in this example, by adding the bent connection portion 205 , a certain distance is created between the heat-conducting bottom shell 2 and the main frame 1 , which facilitates the installation of other structures such as the power unit.

[0035] In an alternative example, see Figures 1 to 6 As shown, the heat-conducting bottom shell 2 includes a heat-conducting shell 1 21 and a heat-conducting shell 2 22 that are fixedly connected to each other, the bending connection part 205 and the heat-conducting shell 1 21 are formed by an integrated molding process, the end of the heat-conducting shell 1 21 facing the direction close to the main frame 1 is provided with a heat-conducting groove 1 211, the heat-conducting shell 2 22 is fixed to the end of the heat-conducting shell 1 21 facing the direction close to the main frame 1, the heat-conducting shell 2 22 is used to seal the heat-conducting groove 1 211, and is combined with the heat-conducting groove 1 211 to form a heat-conducting flow channel 201, and the motor installation area 202 and the temperature adjustment installation area 204 are provided at the end of the heat-conducting shell 1 21 facing the direction away from the main frame 1. Among them, a process hole is opened on the heat-conducting shell 2 22, and the temperature transfer medium is injected into the heat-conducting flow channel 201 through the process hole, and the process hole can be sealed by welding or gluing; the bending connection part 205 and the heat-conducting shell 1 21 can be formed by stamping; the heat-conducting shell 1 21 and the heat-conducting shell 2 22 can be fixed to each other by welding.

[0036] Specifically, this example can effectively reduce the manufacturing difficulty and cost of the heat-conducting shell by integrating the bent connection part 205, the heat-conducting shell 21 and the heat-conducting groove 211 into an integrated structure, and the heat-conducting groove 211 can have a certain volume to facilitate the flow of the temperature transfer medium, thereby ensuring uniform heat transfer on the heat-conducting bottom shell 2.

[0037] In an alternative example, see Figures 1 to 10 As shown, a first motor through hole 212 penetrating the heat-conducting housing 1 21 is provided in the motor installation area 202, a second motor through hole 221 matching the first motor through hole 212 is provided on the heat-conducting housing 22, and a connecting flange 1 222 is provided at one end of the second motor through hole 221 facing the heat-conducting groove 1 211, and the connecting flange 1 222 is fixedly connected to the heat-conducting groove 1 211. The output shaft of the power motor 6 passes through the first motor through hole 212 and the second motor through hole 221, and the connecting flange 1 222 is connected to the heat-conducting groove 1 211 by welding.

[0038] Specifically, this example maintains a sealed connection between the first motor through hole 212 and the second motor through hole 221 by fixedly connecting the connecting flange 222 and the heat conducting groove 211, thereby ensuring the airtightness of the heat conducting channel 201 and reducing the manufacturing difficulty of the heat conducting bottom shell 2.

[0039] In an alternative example, see Figures 1 to 10As shown, a second heat-conducting groove 223 is provided at one end of the second heat-conducting housing 22 facing the first heat-conducting housing 21 . The second heat-conducting groove 223 is located in the motor mounting area 202 and is combined with the first heat-conducting groove 211 to form a storage cavity for storing a temperature transfer medium.

[0040] Specifically, this example increases the volume of the temperature transfer medium by adding a storage cavity, which can absorb and transfer more heat, so that the double-sided laser printer can maintain a stable operating temperature, thereby ensuring the stability of the double-sided laser printer during operation.

[0041] In an alternative example, see Figures 1 to 10 As shown, a first paper-wrapped through hole 213 penetrating through the heat-conducting housing 1 21 is provided in the paper-wrapped installation area 203, a second paper-wrapped through hole 224 matching the first paper-wrapped through hole 213 is provided on the heat-conducting housing 22, and a second connecting flange 225 is provided at one end of the heat-conducting housing 22 facing the heat-conducting housing 1 21, and the second connecting flange 225 is fixedly connected to the heat-conducting groove 1 211. Among them, the first paper-wrapped through hole 213 and the second paper-wrapped through hole 224 can be installed with a bearing sleeve, and the paper-wrapped shaft 4 can be directly inserted into the bearing sleeve by rotating; the second connecting flange 225 and the heat-conducting groove 1 211 can be fixed to each other by welding.

[0042] Specifically, this example ensures the sealing of the connection between the first paper folding hole 213 and the second paper folding hole 224 by fixedly connecting the second connecting flange 225 to the heat conducting groove. At the same time, heat is transferred through the first paper folding hole 213 and the second paper folding hole 224. The heat is transferred to the paper folding wheel 5 through the bearing sleeve and the paper folding shaft 4, so that the paper folding wheel 5 is maintained at a suitable working temperature, thereby improving the working stability of the double-sided laser printer in high and low temperature environments.

[0043] In an alternative example, see Figures 1 to 10 As shown, the temperature control unit 7 includes a semiconductor temperature control module 71, a heat exchanger 72, a temperature control housing 73 and a fan 74. One end of the semiconductor temperature control module 71 is fixedly connected to the end of the heat-conducting housing 21 facing away from the main frame 1 by bolt connection. The temperature control housing 73 is fixedly connected to the heat-conducting housing 21 by bolt connection. The heat exchanger 72 is fixedly connected to the other end of the semiconductor temperature control module 71 by bolt connection. A temperature control channel 731 is provided in the temperature control housing 73. The fan 74 is fixedly connected to the temperature control housing 73 by bolt connection. The temperature control channel 731 passes through the heat exchanger 72 and the fan 74. Among them, the semiconductor temperature control module 71 adopts a thermoelectric semiconductor. When current passes through, one working end face generates heat and the other working end face absorbs heat. Moreover, the working state of the working end face can be changed by changing the current flow direction. Among them, the semiconductor temperature control module 71 is fixed in the temperature control installation area 204.

[0044] Specifically, this example can accurately adjust the temperature through the semiconductor temperature control module 71 to keep the power unit at the set operating temperature, further improving the stability of the double-sided laser printer during operation, and the fan 74 and the heat exchanger 72 can discharge the temperature of the other working end of the semiconductor temperature control module 71 in time to avoid adverse effects on the power unit.

[0045] In an alternative example, see Figures 1 to 10 As shown, the heat exchange plate 72 is provided with a guide groove 721 arranged along the direction of the temperature adjustment channel 731 .

[0046] Specifically, this example improves the heat exchange efficiency of the heat exchange fins 72 by increasing the guide grooves 721 and the contact area between the heat exchange fins 72 and the air.

[0047] In an alternative example, see Figures 1 to 10 As shown, the temperature control unit 7 also includes a paper heating bracket 75, a heat-conducting sliding female block 76 and a heat-conducting sliding male block 77. The paper heating bracket 75 is fixed in the paper feed tray 3 by a snap-fitting manner, the heat-conducting sliding female block 76 is fixedly connected to the paper feed tray 3 by a bolt connection manner, and the heat-conducting sliding male block 77 is fixedly connected to the heat-conducting shell 21 by a bolt connection manner. A sliding groove is provided on the heat-conducting sliding female block 76 along the moving direction of the paper feed tray 3, and the heat-conducting sliding male block 77 can be slidably inserted in the sliding groove.

[0048] Specifically, this example adds a paper heating bracket 75, a heat-conducting sliding female block 76 and a heat-conducting sliding male block 77, so that heat can be transferred through the heat-conducting sliding female block 76, the heat-conducting sliding male block 77 and the paper heating bracket 75, and then extended to the paper feed tray 3, thereby adjusting the temperature of the printing paper so that it can be maintained at a stable operating temperature, thereby ensuring the printing quality and stability of the double-sided laser printer.

[0049] In an alternative example, see Figures 1 to 10 As shown, the end of the heat-conducting housing 22 facing the heat-conducting groove 1 211 is provided with an isolation flange 226, and the isolation flange 226 is provided along the heat-conducting channel 201. The heat-conducting housing 22 extends into the heat-conducting groove 1 211 to separate the heat-conducting groove 1 211 into two components.

[0050] Specifically, this example increases the contact area between the heat-conducting housing 22 and the temperature transfer medium by adding an isolation flange 226 in the heat-conducting groove 1 211, and the isolation flange 226 can separate the heat-conducting groove 1 211 into two components, utilizing the temperature difference of the heat-conducting flow channel 201 to facilitate the flow of the temperature transfer medium.

[0051] In general, this example adds a temperature regulating unit 7 to the heat-conducting bottom shell 2. Through the operation of the temperature regulating unit 7, the temperature of the components connected to the heat-conducting bottom shell 2 is controlled, so that the power unit and other structures are maintained at the set working temperature, thereby ensuring the stability of the operation of the power mechanism and avoiding defects such as paper conveying jams and fixing offsets caused by too low temperature. At the same time, a heat-conducting flow channel 201 is added to the heat-conducting bottom shell 2. Through the flow of temperature transfer medium, the heat transfer of the heat-conducting bottom shell 2 is made more uniform, avoiding heat concentration, and further improving the stability of the operation of the double-sided laser printer. In addition, by adding a paper heating bracket 75, a heat-conducting sliding female block 76 and a heat-conducting sliding male block 77, heat can be transferred through the heat-conducting sliding female block 76, the heat-conducting sliding male block 77 and the paper heating bracket 75, and then extended to the paper feed tray 3, thereby adjusting the temperature of the printing paper so that it can be maintained at a stable working temperature, thereby ensuring the printing quality and stability of the double-sided laser printer.

[0052] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0053] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A double-sided laser printer, comprising a main frame (1), a heat-conducting bottom shell (2) detachably connected to the main frame (1), a power unit mounted on the heat-conducting bottom shell (2), a paper feed tray (3) slidably connected to the main frame (1), a paper-folding shaft (4) one end of which is rotatably connected to the heat-conducting bottom shell (2), and a paper-folding wheel (5) detachably fixed to the outer wall of the paper-folding shaft (4), wherein the power unit has a power motor (6), characterized in that: A temperature regulating unit (7) for regulating temperature is fixedly connected to the heat-conducting bottom shell (2); a heat-conducting flow channel (201) is provided in the heat-conducting bottom shell (2); a temperature transfer medium is filled in the heat-conducting flow channel (201); a motor installation area (202) for installing a power motor (6), a paper-folding installation area (203) for installing a paper-folding shaft (4), and a temperature-regulating installation area (204) for installing the temperature-regulating unit (7) are provided on the heat-conducting bottom shell (2); and the heat-conducting flow channel (201) passes through the motor installation area (202), the paper-folding installation area (203), and the temperature-regulating installation area (204).

2. The double-sided laser printer according to claim 1, characterized in that: A plurality of bent connection portions (205) are provided at one end of the heat-conducting bottom shell (2) facing the main frame (1); a certain distance is provided between the heat-conducting bottom shell (2) and the main frame (1); and the heat-conducting bottom shell (2) and the main frame (1) are combined to form an installation cavity for installing a power unit; and the power motor (6) is installed at one end of the heat-conducting bottom shell (2) facing away from the main frame (1).

3. The double-sided laser printer according to claim 2, characterized in that: The heat-conducting bottom shell (2) comprises a heat-conducting shell 1 (21) and a heat-conducting shell 2 (22) which are fixedly connected to each other; the bent connection portion (205) and the heat-conducting shell 1 (21) are formed by an integral molding process; a heat-conducting groove 1 (211) is provided at one end of the heat-conducting shell 1 (21) facing the main frame (1); the heat-conducting shell 2 (22) is fixed to one end of the heat-conducting shell 1 (21) facing the main frame (1); the heat-conducting shell 2 (22) is used to seal the heat-conducting groove 1 (211) and is combined with the heat-conducting groove 1 (211) to form a heat-conducting flow channel (201); the motor installation area (202) and the temperature adjustment installation area (204) are provided at one end of the heat-conducting shell 1 (21) facing away from the main frame (1).

4. The double-sided laser printer according to claim 3, characterized in that: A first motor through hole (212) penetrating the heat-conducting housing (21) is provided in the motor installation area (202); a second motor through hole (221) matching the first motor through hole (212) is provided on the heat-conducting housing (22); a connecting flange (222) is provided at one end of the second motor through hole (221) facing the heat-conducting groove (211); and the connecting flange (222) is fixedly connected to the heat-conducting groove (211).

5. The double-sided laser printer according to claim 4, characterized in that: The second heat-conducting housing (22) is provided with a second heat-conducting groove (223) at one end facing the first heat-conducting housing (21); the second heat-conducting groove (223) is located in the motor installation area (202) and is combined with the first heat-conducting groove (211) to form a storage cavity for storing a temperature transfer medium.

6. The double-sided laser printer according to claim 5, characterized in that: A first paper through hole (213) penetrating the heat-conducting shell one (21) is provided in the paper installation area (203); a second paper through hole (224) matching the first paper through hole (213) is provided on the heat-conducting shell two (22); a connecting flange two (225) is provided at one end of the heat-conducting shell two (22) facing the heat-conducting shell one (21); and the connecting flange two (225) is fixedly connected to the heat-conducting groove one (211).

7. The double-sided laser printer according to claim 6, characterized in that: The temperature control unit (7) comprises a semiconductor temperature control module (71), a heat exchange plate (72), a temperature control housing (73) and a fan (74); one end of the semiconductor temperature control module (71) is fixedly connected to one end of a heat conductive housing (21) facing away from the main frame (1); the temperature control housing (73) is fixedly connected to the heat conductive housing (21); the heat exchange plate (72) is fixedly connected to the other end of the semiconductor temperature control module (71); a temperature control channel (731) is provided in the temperature control housing (73); the fan (74) is fixedly connected to the temperature control housing (73); and the temperature control channel (731) passes through the heat exchange plate (72) and the fan (74).

8. The double-sided laser printer according to claim 7, characterized in that: The heat exchange plate (72) is provided with a guide groove (721) arranged along the direction of the temperature adjustment channel (731).

9. The double-sided laser printer according to claim 7, characterized in that: The temperature control unit (7) further comprises a paper heating support (75), a heat-conducting sliding female block (76) and a heat-conducting sliding male block (77); the paper heating support (75) is fixed in the paper feed tray (3); the heat-conducting sliding female block (76) is fixedly connected to the paper feed tray (3); the heat-conducting sliding male block (77) is fixedly connected to a heat-conducting housing (21); a sliding groove is provided on the heat-conducting sliding female block (76) along the moving direction of the paper feed tray (3); and the heat-conducting sliding male block (77) can be slidably inserted in the sliding groove.

10. The double-sided laser printer according to claim 8, characterized in that: An isolation flange (226) is provided at one end of the heat-conducting housing (22) facing the heat-conducting groove (211), and the isolation flange (226) is provided along the direction of the heat-conducting channel (201).

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