Rotary feeding structure and sintering equipment

Abstract

The utility model belongs to the field of semiconductor sintering equipment, and particularly relates to a rotary feeding structure and sintering equipment. The rotary feeding structure is used for conveying a charging tray at a preset position to a hot pressing station, and is characterized by comprising a rotating assembly, a feeding assembly and a discharging assembly, the rotating assembly comprises a rotating material plate arranged in a rotating mode and a rotating driving mechanism used for driving the rotating material plate to rotate, and the hot pressing station is located on a rotating path of the rotating material plate; and the conveying assembly comprises a first clamping mechanism, a transferring mechanism and a second clamping mechanism arranged at an interval relative to the first clamping mechanism, the first clamping mechanism grabs the trays at the preset position, the second clamping mechanism is arranged on the rotating path of the rotating material plate, and the transferring mechanism is arranged between the first clamping mechanism and the second clamping mechanism in a sliding mode. According to the utility model, the charging tray can be automatically conveyed from a preset position to a hot-pressing station, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of semiconductor sintering equipment, and particularly relates to a rotary feeding structure and a sintering equipment. Background Art

[0002] At present, power semiconductor devices need to withstand high current, high voltage and high energy density, which requires packaging interconnect materials to have excellent electrical conductivity, thermal conductivity and mechanical properties. With the improvement of device integration and the gradual commercialization of the third-generation semiconductors represented by silicon carbide, traditional connection methods can no longer meet the requirements of power devices in terms of heat dissipation, electrical conductivity and mechanical properties. Against this background, new packaging methods represented by the sintered silver process have gradually become the mainstream technology for power device packaging.

[0003] In the currently applied pressure sintering technology, a hot press sintering device is essential. Usually during sintering, a worker places a tray on a sintering mold, and then the semiconductor device on the tray is sintered through the sintering mold. However, this manual feeding method not only has low transfer efficiency of the tray, easily causes worker fatigue, but also is not suitable for automated continuous production. Summary of the Utility Model

[0004] The purpose of the embodiment of the present application is to provide a rotary feeding structure, aiming to solve the problem of how to convey a tray to a hot press station.

[0005] To achieve the above purpose, the technical solution adopted by the present application is:

[0006] In a first aspect, a rotary feeding structure is provided for conveying a tray at a predetermined position to a hot press station, and the rotary feeding structure includes:

[0007] A rotary assembly, including a rotatable rotary tray and a rotary drive mechanism for driving the rotary tray to rotate, and the hot press station is located on the rotation path of the rotary tray; and

[0008] A conveying assembly, including a first clamping mechanism, a transfer mechanism and a second clamping mechanism spaced relative to the first clamping mechanism, the first clamping mechanism grabs the tray at the predetermined position, the second clamping mechanism is arranged on the rotation path of the rotary tray, and the transfer mechanism is slidably arranged between the first clamping mechanism and the second clamping mechanism;

[0009] Wherein, the transfer mechanism receives the tray from the first clamping mechanism and transfers the tray to the second clamping mechanism, the second clamping mechanism grabs the tray and releases the tray onto the rotary tray, and the rotary tray rotates a predetermined angle and moves the tray to the hot press station.

[0010] In some embodiments, the rotary feeding structure further includes a feeding table having a feeding groove, and two ends of the feeding table respectively extend toward the first clamping mechanism and the second clamping mechanism, and the transfer mechanism is slidably disposed in the feeding groove.

[0011] In some embodiments, the transfer mechanism includes two oppositely disposed support frames, and the two support frames are respectively slidably connected to two side walls of the feeding groove, and the two support frames are respectively used to support two ends of the tray.

[0012] In some embodiments, the rotary feeding structure further includes a synchronous belt rotatably disposed in the feeding groove, a transmission shaft rotatably arranged along the width direction of the feeding groove, and a synchronous driver for driving the synchronous belt to rotate. There are two synchronous belts, and the two support frames are respectively connected to the two synchronous belts, and two ends of the transmission shaft are respectively drivingly connected to the two synchronous belts.

[0013] In some embodiments, the first clamping mechanism includes a fixed support seat, a lifter disposed on the support seat, a first finger cylinder connected to the lifter, and a first jaw connected to the first finger cylinder. The first finger cylinder is provided with the first jaws at both ends, and the first finger cylinder is used to drive the two first jaws to clamp the tray.

[0014] In some embodiments, the first jaw includes a first clamping plate connected to the first finger cylinder and first clamping heads arranged on the first clamping plate. There are two first clamping heads arranged at intervals.

[0015] In some embodiments, the second clamping mechanism includes a preheating template located above the rotary plate, a second finger cylinder disposed on the preheating template, and a second jaw connected to the second finger cylinder. The second finger cylinder is provided with the second jaws at both ends, and the second finger cylinder is used to drive the two second jaws to clamp the tray; the second jaw includes a second clamping plate connected to the second finger cylinder and second clamping heads arranged on the second clamping plate. There are two second clamping heads arranged at intervals.

[0016] In some embodiments, the rotary plate is provided with a feeding groove for placing the tray. There are a plurality of feeding grooves, and the feeding grooves are arranged at intervals around the rotation center of the rotary plate, and the rotary plate rotates so that each feeding groove passes through the hot pressing station in sequence.

[0017] In some embodiments, the rotary feeding structure further includes an electrical slip ring disposed at the rotation center of the rotary plate, and the electrical slip ring rotates synchronously with the rotary plate.

[0018] In a second aspect, a sintering device is provided, which includes the rotary feeding structure, and the sintering device further includes a hot pressing die disposed at the hot pressing station.

[0019] The beneficial effects of the present application are as follows: The rotary feeding structure includes a rotary component and a conveying component, which can realize the automatic conveying of the tray from a predetermined position to the hot pressing station, improving production efficiency. The rotation of the rotary plate can accurately send the tray to the hot pressing station, reducing the cumbersome steps and errors of manual operation. The automatic conveying method reduces the labor intensity of workers' operations, reduces potential safety hazards caused by human factors, is applicable to large-scale automated production processes, and improves the continuity and stability of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or exemplary technical descriptions. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 is a three-dimensional structural schematic diagram of the rotary feeding structure provided by an embodiment of the present application;

[0022] Figure 2 is Figure 1 the three-dimensional structural schematic diagram of the conveying component in

[0023] Figure 3 is Figure 1 the three-dimensional structural schematic diagram of the first clamping mechanism in

[0024] Figure 4 is Figure 1 the three-dimensional structural schematic diagram of the second clamping mechanism in

[0025] Figure 5 is Figure 1 the three-dimensional structural schematic diagram of the rotary component in

[0026] Figure 6 is a three-dimensional structural schematic diagram of the sintering device provided by another embodiment of the present application.

[0027] Among them, the reference numerals in the drawings are as follows:

[0028] 300. Rotary feeding structure; 30. Conveyor assembly; 31. First clamping mechanism; 32. Second clamping mechanism; 33. Transfer mechanism; 200. Tray; 50. Sintering die; 44. Hot pressing station; 40. Rotary assembly; 41. Rotary plate; 42. Rotary drive mechanism; 311. First clamping jaw; 312. First finger cylinder; 313. Lifter; 314. Support base; 34. Feeding table; 341. Feeding groove; 342. Synchronous belt; 343. Synchronous drive; 344. Transmission shaft; 331. Support frame; 3111. First clamping plate; 3112. First clamping head; 208. Limiting groove; 321. Preheating template; 322. Second finger cylinder; 323. Second clamping jaw; 3231. Second clamping plate; 3232. Second clamping head; 411. Loading groove; 35. Unloading structure; 203. Magazine; 412. Electrical slip ring; Detailed implementation manners

[0029] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0030] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to the other component. The orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present application. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances. The terms "first" and "second" are only used for the purpose of convenient description and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of technical features. The meaning of "a plurality" is two or more unless otherwise specifically defined.

[0031] Please refer to Figures 1 to 3 FIG., an embodiment of the present application provides a rotary feeding structure 300 and a sintering device having the same. The rotary feeding structure 300 is used to convey a tray 200 carrying semiconductor devices to be sintered to a hot pressing station 44, so that the sintering die 50 located at the hot pressing station 44 can sinter the semiconductor devices on the tray 200.

[0032] Please refer to Figures 1 to 3, a rotary feeding structure 300, which is used to convey a tray 200 at a predetermined position to a hot pressing station 44. The rotary feeding structure 300 includes a rotary assembly 40 and a conveying assembly 30.

[0033] Please refer to Figures 1 to 3 , the rotary assembly 40 includes a rotatable rotary plate 41 and a rotary driving mechanism 42 for driving the rotary plate 41 to rotate. The hot pressing station 44 is located on the rotation path of the rotary plate 41; it can be understood that the rotary plate 41 is used for placing the tray 200. When the driving mechanism 42 drives the rotary plate 41 to rotate, the tray 200 located on the rotary plate 41 can be rotationally conveyed to the hot pressing station 44, and the sintering mold 50 is arranged at the hot pressing station 44.

[0034] Please refer to Figures 2 to 4 , the conveying assembly 30 includes a first clamping mechanism 31, a transfer mechanism 33, and a second clamping mechanism 32 spaced apart from the first clamping mechanism 31. The first clamping mechanism 31 grabs the tray 200 at a predetermined position. The second clamping mechanism 32 is arranged on the rotation path of the rotary plate 41. The transfer mechanism 33 is slidably arranged between the first clamping mechanism 31 and the second clamping mechanism 32; the transfer mechanism 33 can reciprocate horizontally, so as to continuously move the tray 200 from the first clamping mechanism 31 to the second clamping mechanism 32.

[0035] Please refer to Figures 2 to 4 , wherein, the transfer mechanism 33 receives the tray 200 from the first clamping mechanism 31, transfers the tray 200 to the second clamping mechanism 32. The second clamping mechanism 32 grabs the tray 200 and releases the tray 200 onto the rotary plate 41. The rotary plate 41 rotates a predetermined angle and moves the tray 200 to the hot pressing station 44. The predetermined angle can be 30 degrees, 45 degrees or 90 degrees, which is not limited here and can be selected according to actual situations. In this embodiment, the tray 200 is located on a loading rack, and the first clamping mechanism 31 clamps the tray 200 to be sintered from the loading rack.

[0036] The rotary feeding structure 300 of the embodiment of the present application includes a rotary assembly 40 and a conveying assembly 30, which can realize the automatic conveying of the tray 200 from a predetermined position to the hot pressing station 44, improving production efficiency. The rotation of the rotary plate 41 can accurately send the tray 200 to the hot pressing station 44, reducing the cumbersome steps and errors of manual operation. The automatic conveying method reduces the labor intensity of workers' operation, reduces the potential safety hazards caused by human factors, is suitable for large-scale automatic production processes, and improves the continuity and stability of production.

[0037] Optionally, the rotary driving mechanism 42 can be the cooperation of a motor and a gear assembly, and the gear assembly can transmit the rotational power of the motor to the rotary plate 41.

[0038] Please refer to Figures 2 to 4 , in some embodiments, the rotary feeding structure 300 further includes a feeding table 34 having a feeding groove 341. Both ends of the feeding table 34 extend towards the first clamping mechanism 31 and the second clamping mechanism 32 respectively. The transfer mechanism 33 is slidably disposed in the feeding groove 341.

[0039] Optionally, the first clamping mechanism 31 is fixed on the feeding table 34, and the predetermined position is disposed in the feeding groove 341. By providing the feeding table 34 with the feeding groove 341, both ends of the feeding table 34 extend towards the first clamping mechanism 31 and the second clamping mechanism 32 respectively, so that the tray 200 can remain stable in the feeding groove 341 during the transfer process. The transfer mechanism 33 is slidably disposed in the feeding groove 341, which can effectively avoid the shaking and tilting of the tray 200 during the movement process, and improve the smoothness and reliability of the transfer of the tray 200.

[0040] Optionally, a bottom template is provided on the transfer mechanism 33, and the tray 200 can be placed on the bottom template, so that the transfer of the tray 200 can be realized through the support of the bottom template.

[0041] Please refer to Figures 2 to 4 , in some embodiments, the transfer mechanism includes two relatively arranged support frames 331. The two support frames 331 are respectively slidably connected to the two side walls of the feeding groove 341, and the two support frames 331 are respectively used to support both ends of the tray 200.

[0042] Optionally, a guide rail slider mechanism can be provided on the side wall of the feeding groove 341 to guide the sliding of the support frame 331 through the guide rail slider mechanism. The two support frames 331 are respectively slidably connected to the two side walls of the feeding groove 341, ensuring the smoothness and support force of the tray 200 during the transfer process. The two support frames 331 can respectively support both ends of the bottom template, and the tray 200 is placed on the bottom template, so that the tray 200 is not easily tilted or dropped during the conveying process, improving the safety of the operation.

[0043] Please refer to Figures 2 to 4 , in some embodiments, the rotary feeding structure 300 further includes a synchronous belt 342 rotatably disposed in the feeding groove 341, a transmission shaft 344 rotatably arranged along the groove width direction of the feeding groove 341, and a synchronous driver 343 for driving the synchronous belt 342 to rotate. Two synchronous belts 342 are provided, and the two support frames 331 are respectively connected to the two synchronous belts 342, and both ends of the transmission shaft 344 are respectively drivingly connected to the two synchronous belts 342. The synchronous driver 343 can be a servo motor.

[0044] Optionally, by setting two synchronous belts 342, and the two synchronous belts 342 are drivingly connected through a transmission shaft 344. When the synchronous drive 343 drives one of the synchronous belts 342 to rotate, the other synchronous belt 342 can also rotate synchronously through the transmission of the transmission shaft 344. The two synchronously rotating synchronous belts 342 can respectively drive the two support frames 331 to slide synchronously, ensuring the synchronous movement of the two support frames 331 and avoiding the problems of tilting and offset of the tray 200 caused by non-synchronization. The arrangement of the transmission shaft 344 further enhances the transmission efficiency of the synchronous belt 342, enabling the tray 200 to move smoothly on a predetermined path and improving the working efficiency and accuracy of the entire feeding structure.

[0045] Please refer to Figures 2 to 4 , in some embodiments, the first clamping mechanism 31 includes a fixedly arranged support base 314, a lifter 313 arranged on the support base 314, a first finger cylinder 312 connected to the lifter 313, and a first jaw 311 connected to the first finger cylinder 312. First jaws 311 are provided at both ends of the first finger cylinder 312, and the first finger cylinder 312 is used to drive the two first jaws 311 to clamp the tray 200. The lifter 313 can drive the first finger cylinder 312 to rise or fall in the vertical direction. After the two first jaws 311 clamp the tray 200, the lifter 313 drives the first finger cylinder 312 to rise, and the tray 200 rises synchronously. The transfer mechanism 33 moves to the lower side of the tray 200, and then the lifter 313 drives the first finger cylinder 312 to fall until the tray 200 is released onto the transfer mechanism 33.

[0046] The first finger cylinder 312 can drive the two first jaws 311 to move closer or farther away from each other in the horizontal direction.

[0047] Optionally, the height of the two first jaws 311 can be adjusted by the lifter 313 so that they can adapt to trays 200 of different heights, realizing precise positioning and clamping of the trays 200. The first finger cylinder 312 drives the first jaws 311 to clamp the tray 200, ensuring stability and safety during the clamping process, effectively reducing human operation errors, and improving the reliability and production efficiency of automated operations.

[0048] Optionally, the lifter 313 can be a cylinder or a synchronous belt 342 structure, which is prior art and will not be elaborated here.

[0049] Please refer to Figures 2 to 4 , in some embodiments, the first jaw 311 includes a first clamping plate 3111 connected to the first finger cylinder 312 and first clamping heads 3112 arranged on the first clamping plate 3111. Two first clamping heads 3112 are arranged at intervals.

[0050] Optionally, at positions corresponding to the first clamping heads 3112 on the tray 200, there are limiting grooves 208. Each first clamping head 3112 is respectively clamped in each limiting groove 208, thereby stably clamping the tray 200 and being able to provide a more stable clamping force. The spaced arrangement of the first clamping heads 3112 ensures multi-point support and clamping of the tray 200, avoiding tilting and sliding of the tray 200 caused by single-point clamping. The first clamping plate 3111 is connected to the first finger cylinder 312, enabling the first clamping head 3112 to flexibly adjust its position to adapt to trays 200 of different sizes, improving the stability and safety of the clamping process and preventing the tray 200 from slipping or shifting.

[0051] Please refer to Figures 2 to 4 , in some embodiments, the second clamping mechanism 32 includes a preheating template 321 located above the rotating plate 41, a second finger cylinder 322 provided on the preheating template 321, and a second clamping jaw 323 connected to the second finger cylinder 322. Second clamping jaws 323 are provided at both ends of the second finger cylinder 322, and the second finger cylinder 322 is used to drive the two second clamping jaws 323 to clamp the tray 200.

[0052] Optionally, the preheating template 321 can slide vertically under the drive of an external force, facilitating the second finger cylinder 322 to drive the two second clamping jaws 323 to clamp the tray 200 from the transfer mechanism 33, and after the transfer mechanism 33 leaves, releasing the tray 200 onto the rotating plate 41. A preheating mold is provided below the preheating template 321, which can preheat the tray 200 before it is transferred to the hot pressing station 44, ensuring the temperature uniformity of the tray 200 at the hot pressing station 44 and improving the sintering quality.

[0053] Please refer to Figures 2 to 4 , in some embodiments, the second clamping jaw 323 includes a second clamping plate 3231 connected to the second finger cylinder 322 and second clamping heads 3232 arranged on the second clamping plate 3231, and two second clamping heads 3232 are arranged at intervals.

[0054] Optionally, at positions corresponding to the second clamping heads 3232 on the tray 200, there are limiting grooves 208. Each second clamping head 3232 is respectively clamped in each limiting groove 208, thereby stably clamping the tray 200 and being able to provide a more stable clamping force. The spaced arrangement of the second clamping heads 3232 ensures multi-point support and clamping of the tray 200, avoiding tilting and sliding of the tray 200 caused by single-point clamping. The second clamping plate 3231 is connected to the second finger cylinder 322, enabling the second clamping head 3232 to flexibly adjust its position to adapt to trays 200 of different sizes, improving the stability and safety of the clamping process and preventing the tray 200 from slipping or shifting.

[0055] Optionally, the clamping directions of the two first clamping jaws 311 are perpendicular to the clamping directions of the two second clamping jaws 323.

[0056] Please refer to Figure 5 , in some embodiments, the rotating material plate 41 is provided with a loading groove 411 for placing the feeding tray 200. There are multiple loading grooves 411, and each loading groove 411 is arranged at intervals around the rotation center of the rotating material plate 41. The rotating material plate 41 rotates so that each loading groove 411 passes through the hot pressing station in sequence.

[0057] Please refer to Figure 5 , optionally, in this embodiment, there are four loading grooves 411, and the four loading grooves 411 are arranged at equal arcs.

[0058] Please refer to Figure 5 , optionally, by arranging multiple loading grooves 411 on the rotating material plate 41, and each loading groove 411 is arranged at intervals around the rotation center of the rotating material plate 41, multiple feeding trays 200 can be accommodated and conveyed simultaneously. The interval arrangement of the loading grooves 411 enables the rotating material plate 41 to perform loading, hot pressing, and unloading operations simultaneously during rotation, that is, one loading groove 411 is in the loading and preheating state, one loading groove 411 is in the hot pressing state, one loading groove 411 is in the unloading state, and the other loading groove 411 is in the state of waiting for loading, so that the feeding tray 200 can be continuously processed, improving the sintering efficiency.

[0059] In some embodiments, the rotary feeding structure 300 further includes an electrical slip ring 412 disposed at the rotation center of the rotating material plate 41, and the electrical slip ring 412 rotates synchronously with the rotating material plate 41.

[0060] It can be understood that the electrical slip ring 412 is an electrical component that can communicate the outer tube gas path, transmit electric energy and signals to the rotating material plate 41. By providing the electrical slip ring 412, the wires connected to the rotary feeding structure 300 can be prevented from being wound and knotted. The electrical slip ring 412 includes a rotor installed at the rotation center of the material selection plate and a stator connected to the rotor. Multiple gas path pipelines and multiple circuit pipelines are arranged on the stator. The gas path pipelines can convey nitrogen or inert gas to each loading groove 411 so that each loading groove 411 is in an inert gas environment, or the gas path pipelines can absorb gas from each loading groove 411 so that each loading groove 411 is in a vacuum environment. The gas path pipelines can also convey formic acid atomized gas with a reduction function to each loading groove 411. The circuit pipelines can provide electric energy for each electrical component of the rotary feeding structure 300, such as sensors and controllers.

[0061] Please refer to Figure 6, the present utility model also proposes a sintering device, which includes a rotary feeding structure 300. The specific structure of the rotary feeding structure 300 refers to the above-mentioned embodiments. Since this sintering device adopts all the technical solutions of the above-mentioned embodiments, it also has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated here one by one.

[0062] In some embodiments, the sintering device further includes a hot pressing die disposed at the hot pressing station 44. The sintering device further includes a blanking structure 35, and the blanking structure 35 is used to blank the sintered tray 200.

[0063] Please refer to Figure 6 , the blanking structure 35 includes a conveying component 30 and a bin 203. The second clamping mechanism 32 in the conveying component 30 can clamp the sintered tray 200 located at one of the loading slots 411. The transfer mechanism 33 moves the tray 200 to the first clamping mechanism 31, and the first clamping mechanism 31 clamps the sintered tray 200 and releases it to a predetermined position, so as to collect the sintered tray 200 into the bin 203.

[0064] Optionally, two bins 203 are provided. One bin 203 stores the trays 200 to be sintered, and the other bin 203 is used to store the sintered trays 200.

[0065] The above are only optional embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A rotary feeding structure for conveying a tray at a predetermined position to a hot pressing station, characterized in that The rotating feeding structure includes: A rotating assembly, including a rotatable rotating material plate and a rotating driving mechanism for driving the rotation of the rotating material plate, and the hot pressing station is located on the rotation path of the rotating material plate; and A conveying assembly, including a first clamping mechanism, a transfer mechanism, and a second clamping mechanism spaced apart from the first clamping mechanism. The first clamping mechanism grabs the tray at the predetermined position, the second clamping mechanism is arranged on the rotation path of the rotating material plate, and the transfer mechanism is slidably arranged between the first clamping mechanism and the second clamping mechanism; Wherein, the transfer mechanism receives the tray from the first clamping mechanism and transfers the tray to the second clamping mechanism. The second clamping mechanism grabs the tray and releases the tray onto the rotating material plate. The rotating material plate rotates a predetermined angle and moves the tray to the hot pressing station.

2. The rotary feeding structure according to claim 1, wherein: The rotating feeding structure further includes a feeding table having a feeding groove, and both ends of the feeding table extend towards the first clamping mechanism and the second clamping mechanism respectively, and the transfer mechanism is slidably arranged in the feeding groove.

3. The rotary feeding structure according to claim 2, characterized in that: The transfer mechanism includes two oppositely arranged support frames, and the two support frames are respectively slidably connected to the two side walls of the feeding groove, and the two support frames are respectively used to support both ends of the tray.

4. The rotary feeding structure according to claim 3, wherein: The rotating feeding structure further includes a synchronous belt rotatably arranged in the feeding groove, a transmission shaft rotatably arranged along the width direction of the feeding groove, and a synchronous driver for driving the rotation of the synchronous belt. There are two synchronous belts, and the two support frames are respectively connected to the two synchronous belts, and both ends of the transmission shaft are respectively drivingly connected to the two synchronous belts.

5. The rotary feeding structure according to any one of claims 1-4, characterized in that: The first clamping mechanism includes a fixedly arranged support seat, a lifter arranged on the support seat, a first finger cylinder connected to the lifter, and a first clamping jaw connected to the first finger cylinder. The first finger cylinder is provided with the first clamping jaws at both ends, and the first finger cylinder is used to drive the two first clamping jaws to clamp the tray.

6. The rotary feeding structure according to claim 5, wherein: The first clamping jaw includes a first clamping plate connected to the first finger cylinder and a first clamping head arranged on the first clamping plate. The first clamping heads are arranged at intervals of two.

7. The rotary feeding structure according to any one of claims 1-4, characterized in that: The second clamping mechanism includes a preheating template located above the rotating material plate, a second finger cylinder arranged on the preheating template, and a second clamping jaw connected to the second finger cylinder. The second finger cylinder is provided with the second clamping jaws at both ends, and the second finger cylinder is used to drive the two second clamping jaws to clamp the tray; the second clamping jaw includes a second clamping plate connected to the second finger cylinder and a second clamping head arranged on the second clamping plate. The second clamping heads are arranged at intervals of two.

8. The rotary feeding structure according to any one of claims 1-4, characterized in that: The rotating material plate is provided with a feeding groove for placing the tray. A plurality of feeding grooves are provided, and each feeding groove is arranged at intervals around the rotation center of the rotating material plate, and the rotating material plate rotates so that each feeding groove passes through the hot pressing station in sequence.

9. The rotating feeding structure according to claim 8, wherein: The rotary feeding structure further includes an electrical slip ring disposed at the rotation center of the rotary material plate, and the electrical slip ring rotates synchronously with the rotary material plate.

10. A sintering device, characterized in that: The sintering equipment includes the rotary feeding structure according to any one of claims 1-9, and the sintering equipment further includes a hot pressing die disposed at the hot pressing station.

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