Sintering device and sintering method thereof

Abstract

The present invention discloses a sintering device and a sintering method thereof, comprising a sintering box body, a compartment box body, and a main rod, wherein the compartment box body is located in the sintering box body, a flow channel 1 is formed between the compartment box body and the sintering box body, the main rod is inserted into the compartment box body, a module is installed on the main rod, the module can install a workpiece body, a flow channel 2 is formed between the outer wall of the module and the inner wall of the compartment box body, a vent hole is provided on the circumferential outer wall of the compartment box body, and the vent hole is connected to the flow channel 1 and the flow channel 2 at both ends of the axial direction, when the gas flow rate in the flow channel 1 is less than the gas flow rate in the flow channel 2, the gas in the flow channel 1 flows into the flow channel 2 along the vent hole, and when the gas flow rate in the flow channel 1 is greater than the gas flow rate in the flow channel 2, the gas in the flow channel 2 flows into the flow channel 1 along the vent hole. The present invention provides a sintering device and a sintering method thereof, which have high tar volatilization efficiency and high sintering temperature control accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of crystalline silicon manufacturing, and in particular to a sintering device and a sintering method thereof. Background Art

[0002] In the manufacturing process of solar crystalline silicon panels, a metal slurry layer is brushed on the surface of the crystalline silicon wafer. The metal slurry layer can be silver or aluminum. Then the crystalline silicon wafer is placed in a sintering box for heating and sintering. During sintering, the metal layer on the surface of the crystalline silicon wafer fuses with the crystalline silicon wafer at high temperature, and finally the two form ohmic contact. The sintering process includes a drying and de-coking process, the purpose of which is to volatilize the tar in the slurry through high temperature. Since the drying and de-coking process is carried out in the sintering furnace box, an airflow in a specified direction is formed in the sintering furnace box to discharge the volatilized tar in time. However, since the crystalline silicon wafers are arranged in a long strip along the sintering furnace box, when the crystalline silicon wafer is at the end of the airflow direction, the content of tar volatiles carried in the airflow is greatly increased, which increases the concentration of tar volatiles near this part of the crystalline silicon wafer, resulting in a slowdown in the tar volatilization rate, affecting the oil discharge efficiency. Summary of the invention

[0003] The object of the present invention is to overcome the above-mentioned deficiencies of the prior art and to provide a sintering device and a sintering method thereof, which have high tar volatilization efficiency and high sintering temperature control accuracy.

[0004] The present invention discloses a sintering device, comprising a sintering box body, a partition box main body, and a main rod. The partition box main body is located in the sintering box body. The sintering box body and the partition box main body are axially penetrated. A flow channel is formed between the outer wall of the partition box main body and the inner wall of the sintering box body. The sintering box body has air intake at one axial end and air outlet at the other end. After gas is introduced into the flow channel, the gas flows along the axial direction of the sintering box body. The main rod is inserted into the partition box main body. A module is installed on the main rod. The module can be installed with a workpiece body. Between the outer wall of the module and the inner wall of the partition box main body A second flow channel is formed, with air inlet at one axial end of the compartment body and air outlet at the other end. After gas is introduced into flow channel two, the gas flow direction is the same as the gas flow direction in flow channel one. An air vent is provided on the circumferential outer wall of the compartment body, and the axial ends of the air vent are respectively connected to flow channel one and flow channel two. When the gas flow rate in flow channel one is less than the gas flow rate in flow channel two, the gas in flow channel one flows into flow channel two along the air vent. When the gas flow rate in flow channel one is greater than the gas flow rate in flow channel two, the gas in flow channel two flows into flow channel one along the air vent.

[0005] Furthermore, a groove body is provided on one side of the module, and the groove body runs through the side wall of one side of the module. The main rod can be inserted into the groove body, and the outer wall of the main rod part is in contact with the inner wall of the groove body. The main rod is cylindrical.

[0006] Furthermore, a circumferential outer wall of the partition box body is provided with a channel one, the partition box body includes a cover plate located at the top, the cover plate is provided with a channel two, and the vent hole includes channel one and channel two.

[0007] Furthermore, it also includes a sliding rod, which is coaxially arranged with the main rod. The sliding rod can move axially along the main rod so that the sliding rod can approach and abut the main rod or move away from the main rod. The sliding rod is equipped with a cover. When the sliding rod abuts the main rod, the cover blocks the axial end face of the partition box body. The cover is provided with an air inlet and an air pipe 2 is installed at the air inlet.

[0008] Furthermore, an end cover 1 is installed on the end face of one axial end of the sintering box body, a main rod is installed on the end cover 1, one end of the main rod is inserted into the end cover 1 and fixed, a support frame 2 is installed at the bottom of the main rod, and the bottom of the support frame 2 is fixed to the bottom inner wall of the sintering box body.

[0009] Furthermore, an end cover 2 is installed on an axial end surface of the sintering box body, and an air pipe 1 is installed on the end cover 2.

[0010] Furthermore, a top cover is detachably mounted on the top of the sintering box body.

[0011] Furthermore, the main rod is equipped with a pressure plate 1, the inner wall of the pressure plate 1 is connected to the main rod through a bearing 1, the sliding rod is equipped with a pressure plate 2, the inner wall of the pressure plate 2 is connected to the sliding rod through a bearing 2, and the module is located between the pressure plate 1 and the pressure plate 2. When the sliding rod abuts against the main rod, the pressure plate 1 and the pressure plate 2 respectively press the module, so that when the pressure plate 1 rotates, it can drive the pressure plate 2 and the module to rotate synchronously.

[0012] The present invention also discloses a sintering method, using a sintering device, comprising the following steps:

[0013] S1 feeding:

[0014] Mounting the workpiece body to the module;

[0015] The module is installed on the main pole, and the module is located in the main body of the compartment;

[0016] S2 drying and de-coking:

[0017] Hot air is introduced into the flow channel 1 and the flow channel 2 to dry the slurry layer coated on the surface of the workpiece body, and the gas flow rate in the flow channel 1 is controlled to be greater than the gas flow rate in the flow channel 2, so that the gas pressure in the flow channel 1 is less than the gas pressure in the flow channel 2, and part of the gas in the flow channel 2 flows into the flow channel 1 along the vent hole;

[0018] S3 Sintering:

[0019] Hot air is introduced into flow channel 1 and flow channel 2 to produce a sintering effect on the slurry layer of the workpiece. The gas flow rate in flow channel 1 is controlled to be lower than the gas flow rate in flow channel 2, so that the gas pressure in flow channel 1 is higher than the gas pressure in flow channel 2, and part of the gas in flow channel 1 flows into flow channel 2 along the vent hole.

[0020] Beneficial effects of the present invention:

[0021] 1. In the drying and de-coking stage, the gas flow rate in flow channel 1 is controlled to be greater than the gas flow rate in flow channel 2, so that the gas pressure in flow channel 1 is less than the gas pressure in flow channel 2. Part of the gas in flow channel 2 flows into flow channel 1 along channel 1 and channel 2, and part of the volatilized tar gas flows to flow channel 1, thereby reducing the tar gas concentration in flow channel 2 to improve the tar volatilization efficiency of the slurry layer.

[0022] 2. During the sintering stage, the gas flow rate in channel 1 is controlled to be lower than that in channel 2, so that the gas pressure in channel 1 is greater than that in channel 2. Part of the gas in channel 1 flows into channel 2 along channel 1 and channel 2 to supplement the heat lost after the air in channel 2 sinters the slurry layer of the workpiece, which is beneficial to maintain the temperature stability in channel 2 and improve the quality of the finished product.

[0023] 3. By providing flow channel 1, flow channel 2 and hole channel 1 and hole channel 2 provided between flow channel 1 and flow channel 2, tar generated during drying and coking can be quickly discharged, so as to avoid the influence of tar volatilized during sintering on the sintering process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a cross-sectional view of an embodiment;

[0025] Figure 2 for Figure 1 Sectional view along the MM direction;

[0026] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0027] Figure 4 for Figure 2 Sectional view along the NN axis;

[0028] Figure 5 for Figure 2 View of the workpiece in the P direction.

[0029] Figure numerals: sintering box body 1, top cover 11, support frame 1 12, support frame 2 13, support frame 3 14, cushion block 141, cylinder 15, end cover 1 16, through hole 161, main rod 17, slide bar 18, end cover 2 19, air pipe 1 191, compartment body 2, channel 1 21, cover plate 22, channel 2 221, pressure plate 1 3, bearing 1 31, gear ring 32, gear 33, motor 34, pressure plate 2 4, bearing 2 41, cover 42, air pipe 2 43, module 5, trough body 51, limit block 52, limit groove 521, stopper 53, slot 531, slide bar 54, spring 55, workpiece body 6, slurry layer 61, flow channel 1 7, flow channel 2 8. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in this embodiment to clearly and completely describe the technical solution in this embodiment. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] like Figure 1 As shown, a sintering device comprises a sintering box body 1 and a compartment body 2. The compartment body 2 is located in the sintering box body 1. A support frame 12 is installed at the bottom of the compartment body 2. The support frame 12 is located on both sides of the compartment body 2. The bottom of the support frame 12 is fixedly connected to the inner bottom surface of the compartment body 2. The sintering box body 1 and the compartment body 2 are coaxially arranged.

[0032] like Figure 1 As shown, the sintering box body 1 and the compartment box body 2 are axially penetrated ( Figure 1 A flow channel 7 is formed between the outer wall of the partition box body 2 and the inner wall of the sintering box body 1. The sintering box body 1 takes in air at the right end axially and exhausts air at the left end, that is, the air flow in the flow channel 7 flows from right to left.

[0033] like Figure 1 As shown, an end cover 19 is installed on the axial right end of the sintering box body 1, and the end cover 19 closes the right end of the sintering box body 1. The end cover 19 is installed with an air pipe 191, which is a metal hose and is connected to a hot air source.

[0034] like Figure 1 , 2 As shown, a top cover 11 is detachably mounted on the top of the sintering box body 1 , and the inside of the sintering box body 1 can be operated after the top cover 11 is opened.

[0035] like Figure 1 As shown, an end cover 16 is installed on the axial left end face of the sintering box body 1, and the end cover 16 closes the left end face of the sintering box body 1. The end cover 16 is provided with a plurality of axially penetrating through holes 161 for the gas in the flow channel 7 to be discharged.

[0036] like Figure 1 As shown, the end cap 16 is equipped with a main rod 17, one end of the left side of the main rod 17 is inserted into the end cap 16 for fixing, the main rod 17 extends to the right side of the end cap 16 to form a cantilever state, and the part of the main rod 17 extending from the end cap 16 is equipped with a support frame 2 13, the upper end of the support frame 2 13 holds the main rod 17 to keep the main rod 17 stable, and the bottom of the support frame 2 13 is fixed to the bottom inner wall of the sintering box body 1. The right end of the main rod 17 away from the end cap 16 is inserted into the compartment body 2, and the compartment body 2 and the main rod 17 are coaxially arranged.

[0037] like Figure 1 As shown, a support frame 3 14 is installed on the inner bottom surface of the sintering box body 1, a cushion block 141 is fixed on the upper end of the support frame 3 14, a cylinder 15 is installed on the upper end of the cushion block 141, and a slide bar 18 is connected to the output end of the cylinder 15. The slide bar 18 is coaxially arranged with the main rod 17, and the slide bar 18 can move left and right along the axial direction of the main rod 17, so that the slide bar 18 can approach and abut the main rod 17 or move away from the main rod 17. A cover 42 is fixedly installed on the slide bar 18, and the cover 42 is sleeved on the outer wall of the slide bar 18. When the slide bar 18 moves to abut the main rod 17, the cover 42 blocks the axial right end face of the partition box body 2, so that the air inlet end of the partition box body 2 is separated from the flow channel 17. The cover 42 is provided with an air inlet and an air pipe 2 43 is installed at the air inlet. The air pipe 2 43 is a metal hose, and the right side of the air pipe 2 43 passes through the end cover 2 19 and is connected to the hot air source.

[0038] like Figure 1 , Figure 2 As shown, the main rod 17 is installed with a module 5, the module 5 is in the shape of a rectangular parallelepiped and an elongated strip, a groove body 51 is provided on one side of the module 5, the groove body 51 passes through the side wall of one side of the module 5, the main rod 17 can be inserted into the groove body 51, part of the outer wall of the main rod 17 is in contact with the inner wall of the groove body 51, the main rod 17 is cylindrical, and the module 5 can rotate along the outer wall of the main rod 17.

[0039] like Figure 1 , Figure 2 As shown, the module 5 can be mounted on the workpiece body 6, specifically, in combination with Figure 3 , the module 5 is installed with a limit block 52 and a stopper 53 on the side, and the limit block 52 and the stopper 53 are respectively located on both sides of the workpiece body 6, Figure 4 The limiting block 52 is provided with a limiting groove 521, and the stopper 53 is provided with a slot 531. Both sides of the workpiece body 6 are respectively located in the limiting groove 521 and the slot 531 to form a limit. Figure 3 In the embodiment, the stopper 53 is provided with a slide bar 54 , which can abut against the workpiece body 6 to limit the workpiece body 6 , and the slide bar 54 elastically presses the workpiece body 6 through a spring 55 .

[0040] like Figure 2 As shown, the workpiece body 6 is mounted on the left and right sides of the module 5, combined with Figure 1 There are multiple workpiece bodies 6 distributed along the axial direction of the module 5.

[0041] like Figure 1 As shown, a flow channel 28 is formed between the outer wall of the module 5 and the inner wall of the compartment body 2. After the gas is introduced into the flow channel 28 through the air pipe 243, the gas flow direction is the same as the gas flow direction in the flow channel 17. The circumferential outer wall of the compartment body 2 is provided with air vents. Specifically, the circumferential outer wall of the compartment body 2 is provided with a channel 1 21. The compartment body 2 includes a cover plate 22 located at the top, and the cover plate 22 is provided with a channel 221. The air vents include channel 1 21 and channel 2 221.

[0042] Both axial ends of the channel 1 21 and the axial ends of the channel 2 221 are connected to the flow channel 1 7 and the flow channel 2 8 respectively, and hot air is introduced into the air pipe 1 191 and the air pipe 2 43 respectively. According to the Bernoulli principle, the greater the gas flow rate, the lower the pressure. In the sintering stage, the gas flow rate in the flow channel 1 7 is controlled to be smaller than the gas flow rate in the flow channel 2 8, and the gas pressure in the flow channel 1 7 is greater than the gas pressure in the flow channel 2 8. Part of the gas in the flow channel 1 7 flows into the flow channel 2 8 along the channel 1 21 and the channel 2 221. At this time, when the air used for sintering flows along the flow channel 1 7, the workpiece body 6 absorbs heat and uses the heat for the fusion between the crystalline silicon wafer and the slurry layer 61 in the workpiece body 6. At the end of the gas flow direction in the flow channel 2 8, the gas temperature drops, so that there is a linear difference in the sintering temperature. During the sintering process, the required control range of the sintering temperature is relatively narrow (the temperature difference is controlled within 1°C). Once the temperature range is exceeded, it is easy to produce scrap. During sintering, the workpiece body 6 and the slurry layer 61 melt and combine with each other. In this process, heat will be absorbed, causing the gas temperature in the second runner 8 to change. Therefore, precise temperature control is a key factor in ensuring molding quality. The air temperature in the runner 1 7 is consistent with the air temperature in the runner 2 8. Part of the gas in the runner 1 7 flows into the runner 2 8 along the channel 1 21 and the channel 2 221 to supplement the heat lost in the runner 2 8, which is conducive to maintaining the stability of the temperature in the runner 2 8 and improving the quality of the finished product.

[0043] During the drying and decoking stage, the tar in the slurry layer 61 of the workpiece body 6 is volatilized at the drying temperature (the drying temperature is lower than the sintering temperature), and the gas flow rate in flow channel 1 7 is controlled to be greater than the gas flow rate in flow channel 2 8, so that the gas pressure in flow channel 1 7 is less than the gas pressure in flow channel 2 8, and part of the gas in flow channel 2 8 flows into flow channel 1 7 along channel 1 21 and channel 2 221, and part of the volatilized tar gas flows to flow channel 1 7, thereby reducing the tar gas concentration in flow channel 2 8, so as to improve the tar volatilization efficiency of the slurry layer 61, and improve the uniformity of tar volatilization of multiple workpiece bodies 6 distributed along the flow direction of flow channel 2 8, to prevent the tar volatilization gas concentration near the workpiece body 6 located at the end of the flow direction of flow channel 2 8 (i.e., the position close to the left end of the module 5) from being too low, resulting in too low volatilization efficiency.

[0044] like Figure 1 As shown, the main rod 17 is installed with a pressure plate 3, the inner wall of the pressure plate 3 is connected to the main rod 17 through a bearing 31, the outer wall of the pressure plate 3 is fixedly connected with a gear ring 32, the pressure plate 3 is inserted into the gear ring 32, the outer periphery of the gear ring 32 is meshed with a gear 33, the gear 33 is driven to rotate by a motor 34, and finally the pressure plate 3 is rotated.

[0045] The slide bar 18 is equipped with a pressing plate 2 4, the inner wall of the pressing plate 2 4 is connected to the slide bar 18 through a bearing 2 41, and the module 5 is located between the pressing plate 1 3 and the pressing plate 2 4. When the slide bar 18 slides to the left and abuts the main rod 17, the pressing plate 1 3 and the pressing plate 2 4 respectively press the module 5, so that when the pressing plate 1 3 rotates, it can drive the pressing plate 2 4 and the module 5 to rotate synchronously. The rotation speed of the module 5 is controlled at 12r / min-20r / min, and the rotation speed of the module 5 is relatively slow to prevent the module 5 from rotating too fast and causing more additional wind force to affect the air circulation environment in the flow channel 2 8, bringing additional influencing factors to the temperature control. At the same time, through the rotation of the module 5, the slurry layer 61 of each workpiece body 6 on the module 5 is heated evenly, which is conducive to quality control.

[0046] A sintering method, using the above sintering device, the specific steps of the sintering method are:

[0047] S1 feeding:

[0048] The workpiece body 6 is mounted on the module 5, and the Figure 3 , Figure 4 The workpiece body 6 passes through the limiting groove 521 and is inserted into the slot 531. When the workpiece body 6 is inserted into the slot 531, the slide bar 54 is pushed open. The slide bar 54 presses the workpiece body 6 under the action of the spring 55 to prevent the workpiece body 6 from slipping off.

[0049] like Figure 2 As shown, open the top cover 11 and the cover plate 22, hang the slot body 51 of the module 5 downward on the main rod 17, and the cylinder 15 drives the slide bar 18 to slide to the left so that the pressing plate 2 4 and the pressing plate 1 3 press the two ends of the module 5 axially;

[0050] Close the top cover 11 and the cover plate 22.

[0051] S2 drying and de-coking:

[0052] Dry hot air of the same temperature is respectively introduced into air pipe one 191 and air pipe two 43 to form air circulation in flow channel one 7 and flow channel two 8 and dry the slurry layer 61 of the workpiece body 6. The hot air flow quickly volatilizes the tar in the slurry layer 61. The air circulation direction of flow channel one 7 and flow channel two 8 is from right to left. By controlling the gas flow rate in flow channel one 7 to be greater than the gas flow rate in flow channel two 8, the gas pressure in flow channel one 7 is made lower than the gas pressure in flow channel two 8. Part of the gas in flow channel two 8 flows into flow channel one 7 along hole one 21 and hole two 221, and part of the volatilized tar gas flows to flow channel one 7, thereby reducing the tar gas concentration in flow channel two 8 to improve the tar volatilization efficiency of the slurry layer 61.

[0053] S3 Sintering:

[0054] The air pipe 1 191 and the air pipe 2 43 are respectively introduced with dry hot air of the same temperature (the air temperature introduced at this time is higher than that in step S2), so that air circulation is formed in the flow channel 1 7 and the flow channel 2 8 and the slurry layer 61 of the workpiece body 6 is sintered. The air circulation direction of the flow channel 1 7 and the flow channel 2 8 is from right to left. By controlling the gas flow rate in the flow channel 1 7 to be smaller than the gas flow rate in the flow channel 2 8, and the gas pressure in the flow channel 1 7 to be greater than the gas pressure in the flow channel 2 8, part of the gas in the flow channel 1 7 flows into the flow channel 2 8 along the hole 1 21 and the hole 2 221, so as to supplement the heat lost after the air in the flow channel 2 8 produces the sintering effect on the slurry layer 61 of the workpiece body 6, which is conducive to maintaining the temperature stability in the flow channel 2 8 and improving the quality of the finished product.

[0055] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A sintering device, characterized in that: It comprises a sintering box body (1), a compartment body (2), and a main rod (17); the compartment body (2) is located inside the sintering box body (1); the sintering box body (1) and the compartment body (2) are axially connected; a flow channel (7) is formed between the outer wall of the compartment body (2) and the inner wall of the sintering box body (1); the sintering box body (1) has air intake at one axial end and air outlet at the other end; after gas is introduced into the flow channel (7), the gas flows axially along the sintering box body (1); The main rod (17) is inserted into the compartment body (2), the main rod (17) is installed with a module (5), the module (5) can be installed with a workpiece body (6), a second flow channel (8) is formed between the outer wall of the module (5) and the inner wall of the compartment body (2), the compartment body (2) has air intake at one end and air outlet at the other end, and after gas is introduced into the second flow channel (8), the gas flow direction is the same as the gas flow direction in the first flow channel (7), and the compartment body (2) ) A vent hole is provided on the circumferential outer wall, and the axial ends of the vent hole are respectively connected to the flow channel one (7) and the flow channel two (8). When the gas flow rate in the flow channel one (7) is less than the gas flow rate in the flow channel two (8), the gas in the flow channel one (7) flows into the flow channel two (8) along the vent hole. When the gas flow rate in the flow channel one (7) is greater than the gas flow rate in the flow channel two (8), the gas in the flow channel two (8) flows into the flow channel one (7) along the vent hole.

2. A sintering device according to claim 1, characterized in that: A groove body (51) is provided on one side of the module (5), and the groove body (51) passes through the side wall of one side of the module (5); the main rod (17) can be inserted into the groove body (51), and a part of the outer wall of the main rod (17) is in contact with the inner wall of the groove body (51); the main rod (17) is cylindrical.

3. A sintering device according to claim 1, characterized in that: The circumferential outer wall of the compartment body (2) is provided with a channel one (21), the compartment body (2) includes a cover plate (22) located at the top, the cover plate (22) is provided with a channel two (221), and the vent hole includes the channel one (21) and the channel two (221).

4. A sintering device according to claim 1, characterized in that: It also includes a sliding rod (18), which is coaxially arranged with the main rod (17). The sliding rod (18) can move axially along the main rod (17) so that the sliding rod (18) can approach and abut against the main rod (17) or move away from the main rod (17). The sliding rod (18) is installed with a cover (42). When the sliding rod (18) abuts against the main rod (17), the cover (42) blocks an axial end face of the compartment body (2). The cover (42) is provided with an air inlet and an air pipe 2 (43) is installed at the air inlet.

5. A sintering device according to claim 1, characterized in that: An end cover (16) is installed on the end face of one axial end of the sintering box body (1), and the end cover (16) is installed with the main rod (17). One end of the main rod (17) is inserted into the end cover (16) for fixation. A support frame (13) is installed at the bottom of the main rod (17), and the bottom of the support frame (13) is fixed to the bottom inner wall of the sintering box body (1).

6. A sintering device according to claim 1, characterized in that: An end cover 2 (19) is installed on an axial end surface of the sintering box body (1), and an air pipe 1 (191) is installed on the end cover 2 (19).

7. The sintering device according to claim 1, characterized in that: A top cover (11) is detachably mounted on the top of the sintering box body (1).

8. A sintering device according to claim 4, characterized in that: The main rod (17) is provided with a pressure plate (3), the inner wall of which is connected to the main rod (17) via a bearing (31), the sliding rod (18) is provided with a pressure plate (4), the inner wall of which is connected to the sliding rod (18) via a bearing (41), the module (5) is located between the pressure plate (3) and the pressure plate (4), and when the sliding rod (18) abuts against the main rod (17), the pressure plate (3) and the pressure plate (4) respectively press the module (5), so that when the pressure plate (3) rotates, it can drive the pressure plate (4) and the module (5) to rotate synchronously.

9. A sintering method, using the sintering device according to any one of claims 1 to 8, characterized in that: The steps include: S1 feeding: Mounting the workpiece body (6) to the module (5); The module (5) is installed on the main rod (17), and the module (5) is located inside the compartment body (2); S2 drying and de-coking: Hot air is introduced into the flow channel 1 (7) and the flow channel 2 (8) to dry the slurry layer (61) coated on the surface of the workpiece body (6), and the gas flow rate in the flow channel 1 (7) is controlled to be greater than the gas flow rate in the flow channel 2 (8), so that the gas pressure in the flow channel 1 (7) is less than the gas pressure in the flow channel 2 (8), and part of the gas in the flow channel 2 (8) flows into the flow channel 1 (7) along the vent hole; S3 Sintering: Hot air is introduced into the flow channel 1 (7) and the flow channel 2 (8) to produce a sintering effect on the slurry layer (61) of the workpiece body (6), and the gas flow rate in the flow channel 1 (7) is controlled to be lower than the gas flow rate in the flow channel 2 (8), so that the gas pressure in the flow channel 1 (7) is higher than the gas pressure in the flow channel 2 (8), and part of the gas in the flow channel 1 (7) flows into the flow channel 2 (8) along the air vent.

Images