Cooking machine for weighing food

1. A cooking machine for weighing food, which comprises a housing, a heating tray assembly configured to support and heat a cooking cup, a transmission wheel configured to drive a blender structure of the cooking cup to rotate, a motor configured to drive the transmission wheel to rotate and a transmission mechanism configured to connect the transmission wheel with the motor; wherein the cooking machine for weighing food further comprises a holder configured to support the transmission mechanism and a weighing mechanism configured to weigh food inside the cooking cup; the holder has a first end and a second end; the first end protrudes into and is underneath the heating tray assembly; the transmission wheel is mounted on the first end of the holder; the second end is fixed to the housing; the motor is fixed to the second end; the weighing mechanism is arranged below the first end of the holder; the heating tray assembly is supported on the weighing mechanism;

wherein the weighing mechanism includes a sensor configured to weigh, an upper holder configured to abut against and press one end of the sensor, and a lower holder configured to support the other end of the sensor;

wherein the lower holder has a U shape; two ends of the lower holder are fixedly connected to the holder; the sensor is fixed to the bottom of the lower holder, and

wherein the bottom of the lower holder extends in the directions of two sides of the lower holder to form a supporting plate.

2. The cooking machine for weighing food of claim 1 , wherein the cooking machine for weighing food further includes multiple groups of elastic assemblies configured to elastically support the heating tray assembly; each of the elastic assemblies is connected to the weighing mechanism.

3. The cooking machine for weighing food of claim 2 , wherein each of the elastic assemblies is connected to the upper holder.

4. The cooking machine for weighing food of claim 3 , wherein the upper holder includes an abutting and pressing plate configured to abut against and press the sensor, and four connecting poles respectively arranged at four corners of the abutting and pressing plate; the elastic assemblies are divided into four groups arranged at the bottom of the heating tray assembly; the four groups of elastic assemblies are respectively connected to the four connecting poles.

5. The cooking machine for weighing food of claim 4 , wherein a central portion of the abutting and pressing plate abuts against and presses the sensor; and a width of the central portion of the abutting and pressing plate is narrower than a width of two ends of the abutting and pressing plate.

6. The cooking machine for weighing food of claim 5 , wherein each group of the elastic assemblies include a bolt fixedly connected to the heating tray assembly and a spring sheathed around the bolt; each of the connecting poles is provided with a through hole; the bolt is inserted into a corresponding through hole in a sliding way; two ends of the spring respectively abut against and push the heating tray assembly and one of the four connecting poles that corresponds to the spring.

7. The cooking machine for weighing food of claim 6 , wherein each group of the elastic assemblies further include a gasket which is arranged between the spring and one of the four connecting poles that corresponds to the spring.

8. The cooking machine for weighing food of claim 1 , wherein the transmission mechanism includes a driven wheel connected to the transmission wheel, a driving wheel connected to the motor, and a belt configured to connect the driven wheel to the driving wheel; the driven wheel and the driving wheel are both mounted in the holder in a rotating way.

9. The cooking machine for weighing food of claim 2 , wherein the transmission mechanism includes a driven wheel connected to the transmission wheel, a driving wheel connected to the motor, and a belt configured to connect the driven wheel to the driving wheel; the driven wheel and the driving wheel are both mounted in the holder in a rotating way.

10. The cooking machine for weighing food of claim 3 , wherein the transmission mechanism includes a driven wheel connected to the transmission wheel, a driving wheel connected to the motor, and a belt configured to connect the driven wheel to the driving wheel; the driven wheel and the driving wheel are both mounted in the holder in a rotating way.

11. The cooking machine for weighing food of claim 4 , wherein the transmission mechanism includes a driven wheel connected to the transmission wheel, a driving wheel connected to the motor, and a belt configured to connect the driven wheel to the driving wheel; the driven wheel and the driving wheel are both mounted in the holder in a rotating way.

12. The cooking machine for weighing food of claim 5 , wherein the transmission mechanism includes a driven wheel connected to the transmission wheel, a driving wheel connected to the motor, and a belt configured to connect the driven wheel to the driving wheel; the driven wheel and the driving wheel are both mounted in the holder in a rotating way.

13. The cooking machine for weighing food of claim 6 , wherein the transmission mechanism includes a driven wheel connected to the transmission wheel, a driving wheel connected to the motor, and a belt configured to connect the driven wheel to the driving wheel; the driven wheel and the driving wheel are both mounted in the holder in a rotating way.