A temperature control device for the forming of magnesium alloy die-castings

Abstract

The present invention discloses a temperature control device for the forming of magnesium alloy die-castings, which relates to the technical field of die-casting forming; it includes a base, on which a die-casting mold system is provided. The die-casting mold system includes a moving mold and a fixed mold. Cooling and heating pipelines are arranged inside the moving mold and the fixed mold, and interfaces are respectively arranged on both sides of the moving mold and the fixed mold, and the interfaces are communicated with the cooling and heating pipelines; a temperature control mechanism is arranged on the base. The temperature control mechanism includes a temperature control slide table slidably arranged thereon. A bracket is arranged on the temperature control slide table, and a cleaning mechanism is arranged on the bracket. Cleaning machines are arranged on both sides of the temperature control slide table; temperature control elements are also respectively arranged on both sides of the temperature control slide table. The temperature control elements include two cooling boxes and two hot boxes; the cooling boxes are used to transmit cooling liquid for cooling control; the hot boxes are used to transmit hot oil for heating control; the present invention can detect the mold temperature in real time, perform temperature control adjustment in real time, and the docking and disassembly are fast and convenient for subsequent maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of die-casting part forming, and particularly relates to a temperature control device for magnesium alloy die-casting part forming. Background Art

[0002] For magnesium alloy die-casting parts, the temperature control of the die-casting mold is an important link to ensure the quality and efficiency of the die-casting process. The temperature of the mold directly affects the fluidity of the molten metal, the cooling rate, the surface quality of the casting, and the dimensional accuracy. The importance of temperature control lies in: fluidity and filling property: an appropriate mold temperature can improve the fluidity of the molten metal, ensure that the metal fully fills the mold, and reduce defects such as porosity and cold shut; cooling rate: too high or too low mold temperature will affect the cooling rate. Too fast may cause the casting to deform, and too slow may increase the production cycle; casting quality: temperature control can improve the surface quality of the casting, reduce the risk of oxidation and discoloration, and thus improve the appearance and performance of the finished product.

[0003] When the existing temperature control equipment for casting molds is operating, it mainly adjusts the temperature through a transmission medium, but the connection method is relatively cumbersome and not convenient for subsequent maintenance. Based on the deficiencies of the existing temperature control equipment, the present invention proposes a temperature control device that can detect the mold temperature in real time, perform temperature control adjustment in real time, and has a fast docking and disassembly, which is convenient for subsequent maintenance. Summary of the Invention

[0004] Aiming at the above technical problems, the present invention can detect the mold temperature in real time, perform temperature control adjustment in real time, and has a fast docking and disassembly, which is convenient for subsequent maintenance.

[0005] The technical solution adopted by the present invention is as follows: A temperature control device for the forming of magnesium alloy die-castings, including a base, on which a die-casting mold system is provided. The die-casting mold system includes a moving mold and a fixed mold. Cooling and heating pipelines are arranged inside the moving mold and the fixed mold, and on both sides of the moving mold and the fixed mold, there are respectively docking ports, which are communicated with the cooling and heating pipelines; a temperature control mechanism is arranged on the base, and the temperature control mechanism includes a temperature control slide table slidably arranged thereon. A bracket is arranged on the temperature control slide table, and a cleaning mechanism is arranged on the bracket for cleaning impurities on the moving mold and the fixed mold; cleaning mechanisms are arranged on both sides of the temperature control slide table for cleaning the cooling and heating pipelines; temperature control components are also respectively arranged on both sides of the temperature control slide table, and the temperature control components include two cooling boxes and two heating boxes; the cooling boxes are used to transmit cooling liquid for cooling control; the heating boxes are used to transmit hot oil for heating control; the two cooling boxes respectively transmit cooling liquid to the moving mold and the fixed mold, and the two heating boxes respectively transmit hot oil to the moving mold and the fixed mold; the temperature control components on both sides of the temperature control slide table conduct cyclic transmission of the cooling liquid and the hot oil for temperature adjustment; communicating mechanisms are respectively arranged on the cooling boxes and the heating boxes, and the communicating mechanisms include docking moving pipes. One end of the docking moving pipe is provided with a docking part, and a sealing cylinder is arranged outside the docking part. Pressing mechanisms are arranged in an array on the inner side of the sealing cylinder, and pressing inclined parts are arranged in an array on the end face of the docking port. The docking part is docked and communicated with the docking port, and the pressing mechanisms are in pressing contact with the pressing inclined parts to fix the docking part and the docking port. A vacuum treatment device is arranged outside the sealing cylinder for vacuum treatment, and a pressure detector is arranged on the sealing cylinder for detecting the pressure inside the sealing cylinder.

[0006] As a preferred solution: An electric motor I and a lead screw I are arranged on the base. The electric motor I is used to drive the lead screw I, and the lead screw I and the temperature control slide table on the temperature control mechanism form a screw pair.

[0007] As a preferred solution: The cleaning mechanism includes an adsorption cleaning box arranged on the bracket, and a control electric cylinder arranged on the bracket. An adsorption part is arranged on the telescopic rod of the control electric cylinder, and the adsorption part is communicated with the adsorption cleaning box through a pipeline. Impurities on the cavities of the moving mold and the fixed mold are adsorbed through the adsorption part.

[0008] As a preferred solution: The cleaning mechanism includes a cleaning transmission box arranged on the temperature control slide table. A moving electric cylinder is arranged on the cleaning transmission box. A moving plate is arranged on the telescopic rod of the moving electric cylinder. A cleaning docking cylinder is arranged on the moving plate. The cleaning docking cylinder is communicated with the cleaning transmission box and is communicated and docked with the docking ports on the moving mold and the fixed mold for cleaning liquid transmission.

[0009] As a preferred solution: The temperature control device includes a transfer electric cylinder arranged on the temperature control slide table. A transfer frame is arranged on the telescopic rod of the transfer electric cylinder. Two sets of clamping mechanisms are slidably arranged on the transfer frame. The clamping mechanism includes two clamping plates. A mating port is arranged on the clamping plate. A second motor and a second lead screw are arranged on the transfer frame. The second lead screw is driven by the second motor; and the second lead screw and the clamping plate form a screw pair; the clamping plate is used to clamp the transfer and connection mechanism.

[0010] As a preferred solution: The connection mechanism includes a connecting pipe connected to the docking moving pipe. One end of the connecting pipe is connected to the cooling box and the heating box; mating parts are arranged on both circumferential sides of the docking moving pipe. The mating parts are fixed by cooperating with the mating ports.

[0011] As a preferred solution: A sealing end plate is arranged on the docking port. A sealing groove is arranged on the sealing end plate. The end face of the sealing cylinder cooperates with the sealing end plate to form a closed chamber, and vacuum treatment is carried out by a vacuum treatment device.

[0012] As a preferred solution: The pressing mechanism includes a pressing control motor arranged on the sealing cylinder, and a control gear ring rotatably installed inside the sealing cylinder. Deflection gears are rotatably arranged in an array inside the sealing cylinder. The deflection gears are meshed with the control gear ring. A deflection rod is arranged on the end face of the deflection gear. The deflection rod is L-shaped. One end of the deflection rod is telescopically provided with a pressing rod. A pressing spring for providing elastic force is connected between the pressing rod and the deflection rod. The docking part and the docking port are fixed by contacting and pressing the inclined part through the pressing spring; the pressing control motor drives one of the deflection gears arranged in an array.

[0013] The beneficial effects of the present invention compared with the prior art are as follows: (1) By docking the docking part with the docking port, and at the same time, docking the end face of the sealing cylinder with the sealing end plate to form a sealed chamber, vacuum treatment can be carried out through a vacuum treatment device, and the pressure inside the sealing cylinder can be detected by a pressure detector to monitor the leakage problem of the transmission medium in real time; (2) After the docking part is docked and connected with the docking port, by controlling the motor to work, that is, driving one of the deflection gears to rotate, under the gear transmission, controlling the ring gear to rotate, that is, other deflection gears rotate synchronously, and the deflection rod deflects, so that the pressing rod contacts the pressing inclined part, that is, the pressing rod presses the pressing inclined part to fix the docking part and the docking port. The end of the pressing rod facing the pressing inclined part is a spherical end. During pressing, the pressing spring expands and contracts to achieve quick fixation; (3) Move the clamping plate, and the mating port cooperates with the mating part to fix the docking moving pipe. Further, when the pressing mechanism releases the pressing state, through the movement of the transfer rack, the docking part is separated from the docking port. When reconnecting and connecting, docking is also carried out in the above manner to achieve quick separation and docking, eliminating manual operation; (4) Clean the docking cylinder at the position where the docking port is located. Control the moving plate to move through the moving electric cylinder, that is, the cleaning docking cylinder is docked with the docking port, and the cleaning transmission box transmits the cleaning liquid to clean the internal pipeline of the mold to prevent dirt accumulation and affect the subsequent temperature control effect; at the same time, when the moving mold and the fixed mold are in a separated state, control the height of the adsorption part through the control electric cylinder, that is, make the adsorption part located between the moving mold and the fixed mold, and through the operation of the adsorption cleaning box, the adsorption part cleans the cavity of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the installation structure of the die-casting mold system of the present invention;

[0016] Figure 3 It is a schematic diagram of the installation structure of the temperature control slide of the present invention;

[0017] Figure 4 It is a schematic diagram of the cleaning mechanism structure of the present invention;

[0018] Figure 5 It is a schematic diagram of the installation structure of the temperature control component of the present invention;

[0019] Figure 6 It is a schematic diagram of the installation structure of the clamping plate of the present invention;

[0020] Figure 7 It is a schematic diagram of the connection mechanism structure of the present invention;

[0021] Figure 8 It is a schematic diagram of the installation structure of the sealing cylinder of the present invention;

[0022] Figure 9 Schematic diagram of the internal structure of the sealing cylinder of the present invention;

[0023] Figure 10 For the present invention Figure 9 Schematic diagram of the structure at the A mark in;

[0024] Figure 11 Schematic diagram of the installation structure of the pressing mechanism of the present invention.

[0025] Reference numerals: 1 - base; 2 - die-casting mold system; 201 - docking port; 3 - first motor; 4 - first lead screw; 5 - temperature control slide; 6 - bracket; 7 - adsorption and cleaning box; 8 - control electric cylinder; 9 - adsorption part; 10 - cleaning transfer box; 11 - moving plate; 12 - cleaning docking cylinder; 13 - moving electric cylinder; 14 - cooling box; 15 - heating box; 16 - transfer electric cylinder; 17 - transfer rack; 18 - second motor; 19 - second lead screw; 20 - clamping plate; 21 - mating port; 22 - connecting pipe; 23 - docking moving pipe; 24 - mating part; 25 - vacuum treatment equipment; 26 - pressure detector; 27 - sealing cylinder; 28 - sealing end plate; 29 - pressing inclined part; 30 - docking part; 31 - control gear ring; 32 - deflecting gear; 33 - deflecting rod; 34 - pressing rod; 35 - pressing spring; 36 - pressing control motor. Detailed implementation manners

[0026] Example: As Figures 1 to 11 shown, a die-casting mold system 2 is arranged on the base 1. The die-casting mold system 2 includes a moving mold and a fixed mold. Cooling and heating pipelines are arranged inside the moving mold and the fixed mold, and docking ports 201 are respectively arranged on both sides of the moving mold and the fixed mold. The docking ports 201 are communicated with the cooling and heating pipelines; a temperature control mechanism is arranged on the base 1. The temperature control mechanism includes a temperature control slide 5 slidably arranged thereon, and a bracket 6 is arranged on the temperature control slide 5; a first motor 3 and a first lead screw 4 are arranged on the base 1. The first motor 3 is used to drive the first lead screw 4, and the first lead screw 4 and the temperature control slide 5 on the temperature control mechanism form a screw pair.

[0027] A cleaning mechanism is provided on the support 6 for removing impurities on the moving mold and the fixed mold; cleaning mechanisms are provided on both sides of the temperature control slide 5 for cleaning the cooling and heating pipelines; the cleaning mechanism includes an adsorption cleaning box 7 provided on the support 6 and a control electric cylinder 8 provided on the support 6. An adsorption part 9 is provided on the telescopic rod of the control electric cylinder 8. The adsorption part 9 is communicated with the adsorption cleaning box 7 through a pipeline. The cavities of the moving mold and the fixed mold are adsorbed with impurities through the adsorption part 9; the cleaning mechanism includes a cleaning transfer box 10 provided on the temperature control slide 5. A moving electric cylinder 13 is provided on the cleaning transfer box 10. A moving plate 11 is provided on the telescopic rod of the moving electric cylinder 13. A cleaning docking cylinder 12 is provided on the moving plate 11. The cleaning docking cylinder 12 is communicated with the cleaning transfer box 10. The cleaning docking cylinder 12 is communicated and docked with the docking ports 201 on the moving mold and the fixed mold to transfer the cleaning liquid.

[0028] Temperature control components are also respectively provided on both sides of the temperature control slide 5. The temperature control components include two cooling boxes 14 and two heating boxes 15; the cooling boxes 14 are used to transfer the cooling liquid for cooling control; the heating boxes 15 are used to transfer the hot oil for heating control; the two cooling boxes 14 respectively transfer the cooling liquid to the moving mold and the fixed mold, and the two heating boxes 15 respectively transfer the hot oil to the moving mold and the fixed mold; the temperature control components on both sides of the temperature control slide 5 perform the circulating transfer of the cooling liquid and the hot oil for temperature adjustment; communicating mechanisms are respectively provided on the cooling boxes 14 and the heating boxes 15. The communicating mechanism includes a docking moving pipe 23. One end of the docking moving pipe 23 is provided with a docking part 30. A sealing cylinder 27 is provided on the outside of the docking part 30. Pressing mechanisms are arranged in an array on the inner side of the sealing cylinder 27. Pressing inclined parts 29 are arranged in an array on the end face of the docking port 201. The docking part 30 is docked and communicated with the docking port 201. The pressing mechanisms are in pressing contact with the pressing inclined parts 29 to fix the docking part 30 and the docking port 201. A vacuum processing device 25 is provided on the outside of the sealing cylinder 27 for vacuum processing, and a pressure detector 26 is provided on the sealing cylinder 27 for detecting the pressure inside the sealing cylinder 27.

[0029] The temperature control device includes a transfer cylinder 16 arranged on the temperature control slide 5. A transfer rack 17 is arranged on the telescopic rod of the transfer cylinder 16. Two sets of clamping mechanisms are slidably arranged on the transfer rack 17. The clamping mechanism includes two clamping plates 20. A mating port 21 is arranged on the clamping plate 20. A second motor 18 and a second lead screw 19 are arranged on the transfer rack 17. The second lead screw 19 is driven by the second motor 18. And the second lead screw 19 and the clamping plate 20 form a screw pair. The clamping plate 20 is used to clamp the transfer and connection mechanism. The connection mechanism includes a connecting pipe 22 connected to the docking moving pipe 23. One end of the connecting pipe 22 is connected to the cooling box 14 and the heating box 15. Mating parts 24 are arranged on both circumferential sides of the docking moving pipe 23. The mating parts 24 are fixed by cooperating with the mating ports 21. A sealing end plate 28 is arranged on the docking port 201. A sealing groove is arranged on the sealing end plate 28. The end face of the sealing cylinder 27 cooperates with the sealing end plate 28 to form a closed chamber, and vacuum treatment is carried out by a vacuum treatment device 25. The pressing mechanism includes a pressing control motor 36 arranged on the sealing cylinder 27, and a control gear ring 31 rotatably installed inside the sealing cylinder 27. Deflection gears 32 are rotatably arranged in an array inside the sealing cylinder 27. The deflection gears 32 are engaged with the control gear ring 31. And a deflection rod 33 is arranged on the end face of the deflection gear 32. The deflection rod 33 is L-shaped. One end of the deflection rod 33 is telescopically provided with a pressing rod 34. And a pressing spring 35 for providing elastic force is connected between the pressing rod 34 and the deflection rod 33. The docking part 30 and the docking port 201 are fixed by pressing and contacting the pressing inclined part 29 through the pressing spring 35. The pressing control motor 36 drives one of the deflection gears 32 arranged in an array.

[0030] The working principle of implementing the present invention: During operation, molding is carried out through the die-casting mold system 2, that is, the molten liquid is injected into the cavities of the moving mold and the fixed mold to achieve shaping. Cooling and heating pipelines are arranged inside the moving mold and the fixed mold, and temperature sensors are arranged on the moving mold and the fixed mold to detect and feedback the mold temperature in real time, and then the temperature is controlled in real time to ensure the molding quality of the product.

[0031] Specifically, during temperature control adjustment in this embodiment, the docking part 30 is docked with the docking port 201. At the same time, the end face of the sealing cylinder 27 is docked with the sealing end plate 28 to form a sealed chamber. Vacuum treatment can be carried out by the vacuum treatment device 25. The pressure inside the sealing cylinder 27 is detected by a pressure detector 26 to monitor the leakage problem of the transmission medium in real time.

[0032] Further, after the docking portion 30 is docked and communicated with the docking port 201, the pressing control motor 36 is operated, that is, one of the deflection gears 32 is driven to rotate. Under the gear transmission, the toothed ring 31 is controlled to rotate, that is, the other deflection gears 32 rotate synchronously, and the deflection rod 33 deflects, so that the pressing rod 34 contacts the pressing inclined portion 29, that is, the pressing rod 34 presses the pressing inclined portion 29, realizing the fixation of the docking portion 30 and the docking port 201. The end of the pressing rod 34 facing the pressing inclined portion 29 is a spherical end, and the pressing spring 35 expands and contracts during pressing.

[0033] The temperature of the mold is monitored in real time by a temperature detector for real-time temperature control adjustment, that is, the cooling tank 14 and the heating tank 15 transfer coolant and hot oil, passing through the internal pipelines of the mold to achieve temperature adjustment, which can effectively improve the stability of die-casting production and product quality. In die-casting production, the implementation and maintenance of temperature control are key factors to ensure production efficiency and casting quality. A reasonable temperature control scheme can not only reduce the defective rate but also extend the service life of the mold, thereby reducing production costs.

[0034] When cleaning the internal pipelines of the mold subsequently, the transfer electric cylinder 16 can be used to control the movement of the transfer frame 17, that is, to make the clamping plate 20 located on the side of the docking moving pipe 23. By operating the second motor 18, the second lead screw 19 rotates, causing the clamping plate 20 to move, and the mating port 21 cooperates with the mating portion 24 to fix the docking moving pipe 23. Further, the pressing mechanism releases the pressing state, and through the movement of the transfer frame 17, the docking portion 30 is separated from the docking port 201. When reconnecting and communicating, the docking is also carried out in the above manner.

[0035] By operating the first motor 3, the first lead screw 4 rotates, causing the temperature control sliding table 5 to move, that is, to make the cleaning docking cylinder 12 located at the position of the docking port 201. The moving electric cylinder 13 is used to control the movement of the moving plate 11, that is, the cleaning docking cylinder 12 is docked with the docking port 201, and the cleaning transmission box 10 transmits the cleaning liquid to clean the internal pipelines of the mold to prevent dirt accumulation and affect the subsequent temperature control effect; at the same time, when the moving mold and the stationary mold are in a separated state, the height of the adsorption portion 9 is controlled by the control electric cylinder 8, that is, to make the adsorption portion 9 located between the moving mold and the stationary mold, and the cavity of the mold is cleaned by the adsorption cleaning box 7 through the work of the adsorption portion 9.

Claims

1. A temperature control device for magnesium alloy die casting, comprising a base (1), a die casting mold system (2) being arranged on the base (1), the die casting mold system (2) comprising a movable mold and a fixed mold, cooling and heating pipelines being arranged inside the movable mold and the fixed mold, and docking ports (201) being arranged on both sides of the movable mold and the fixed mold, respectively, the docking ports (201) being connected to the cooling and heating pipelines; characterized in that: A temperature control mechanism is arranged on the base (1), the temperature control mechanism comprises a temperature control slide (5) slidably arranged on the base (1), a bracket (6) is arranged on the temperature control slide (5), and a cleaning mechanism is arranged on the bracket (6) for cleaning impurities on the movable mold and the fixed mold; cleaning mechanisms are arranged on both sides of the temperature control slide (5) for cleaning cooling and heating pipelines; temperature control components are also arranged on both sides of the temperature control slide (5), the temperature control components comprise two cooling boxes (14) and two heating boxes (15); the cooling boxes (14) are used to transmit coolant for cooling control; the heating boxes (15) are used to transmit hot oil for heating control; the two cooling boxes (14) transmit coolant to the movable mold and the fixed mold respectively, and the two heating boxes (15) transmit hot oil to the movable mold and the fixed mold respectively; the temperature control components on both sides of the temperature control slide (5) perform circulation transmission of coolant and hot oil. transport to adjust the temperature; the cooling box (14) and the heating box (15) are respectively provided with a connecting mechanism, the connecting mechanism comprising a docking movable tube (23); a docking portion (30) is provided at one end of the docking movable tube (23); a sealing cylinder (27) is provided outside the docking portion (30); a pressing mechanism is arranged in an array inside the sealing cylinder (27); a pressing bevel (29) is arranged in an array on the end surface of the docking port (201); the docking portion (30) is used for docking and communicating with the docking port (201); the pressing mechanism is used for pressing and contacting with the pressing bevel (29) to fix the docking portion (30) and the docking port (201); a vacuum processing device (25) is provided outside the sealing cylinder (27) for vacuum processing; and a pressure detector (26) is provided on the sealing cylinder (27) for detecting the pressure inside the sealing cylinder (27).

2. A temperature control device for magnesium alloy die casting according to claim 1, characterized in that: The base (1) is provided with a motor (3) and a screw (4); the motor (3) is used to drive the screw (4); the screw (4) and the temperature control slide (5) on the temperature control mechanism form a spiral pair.

3. The temperature control device for magnesium alloy die casting according to claim 1, characterized in that: The cleaning mechanism comprises an adsorption cleaning box (7) arranged on a bracket (6), and a control electric cylinder (8) arranged on the bracket (6); an adsorption portion (9) is arranged on a telescopic rod of the control electric cylinder (8); the adsorption portion (9) is connected to the adsorption cleaning box (7) through a pipeline, and impurities are adsorbed on the cavities of the movable mold and the fixed mold through the adsorption portion (9).

4. The temperature control device for magnesium alloy die casting according to claim 1, characterized in that: The cleaning mechanism comprises a cleaning transmission box (10) arranged on a temperature-controlled slide table (5); a movable electric cylinder (13) is arranged on the cleaning transmission box (10); a movable plate (11) is arranged on a telescopic rod of the movable electric cylinder (13); a cleaning docking tube (12) is arranged on the movable plate (11); the cleaning docking tube (12) is connected to the cleaning transmission box (10); the cleaning docking tube (12) is used to connect and dock with docking ports (201) on a movable mold and a fixed mold to transfer a cleaning liquid.

5. The temperature control device for magnesium alloy die casting according to claim 1, characterized in that: The temperature control unit comprises a transfer electric cylinder (16) arranged on a temperature control slide (5); a transfer frame (17) is arranged on a telescopic rod of the transfer electric cylinder (16); two groups of clamping mechanisms are slidably arranged on the transfer frame (17); the clamping mechanisms comprise two clamping plates (20); a matching opening (21) is arranged on the clamping plates (20); a second motor (18) and a second screw rod (19) are arranged on the transfer frame (17); the second screw rod (19) is driven by the second motor (18); and the second screw rod (19) and the clamping plate (20) form a spiral pair; the clamping plate (20) is used to clamp the transfer connection mechanism.

6. A temperature control device for magnesium alloy die casting according to claim 5, characterized in that: The connecting mechanism comprises a connecting pipe (22) connected to the docking movable pipe (23), one end of the connecting pipe (22) being connected to the cooling box (14) and the heating box (15); matching parts (24) are provided on both sides of the circumference of the docking movable pipe (23), and the matching parts (24) are fixed by matching with the matching opening (21).

7. The temperature control device for magnesium alloy die casting according to claim 1, characterized in that: The docking port (201) is provided with a sealing end plate (28), the sealing end plate (28) being provided with a sealing groove, and the end surface of the sealing cylinder (27) cooperates with the sealing end plate (28) to form a closed chamber, which is vacuumed by the vacuum processing equipment (25).

8. The temperature control device for magnesium alloy die casting according to claim 1, characterized in that: The clamping mechanism comprises a clamping control motor (36) arranged on the sealing cylinder (27), and a control gear ring (31) rotatably mounted on the inner side of the sealing cylinder (27); a deflection gear (32) is rotatably arranged in an array on the inner side of the sealing cylinder (27); the deflection gear (32) is meshed with the control gear ring (31); and a deflection rod (33) is arranged on the end surface of the deflection gear (32); the deflection rod (33) is L-shaped; a clamping rod (34) is telescopically arranged at one end of the deflection rod (33); and a clamping spring (35) for providing elastic force is connected between the clamping rod (34) and the deflection rod (33); the clamping spring (35) contacts and clamps the clamping inclined portion (29) to fix the docking portion (30) and the docking port (201); the clamping control motor (36) drives one of the deflection gears (32) arranged in an array.

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