Mould for eliminating craze whitening prefabricated blade root and heating arrangement method

Abstract

The invention relates to the technical field of molds, and provides a mold for eliminating craze whitening of a prefabricated blade root and a heating arrangement method.A temperature control system is additionally arranged on the mold, the temperature of different subareas of a product is monitored and controlled in real time, in the resin curing process, the area with the too high temperature is cooled or not heated, and the area with the too low temperature is heated, so that the temperature of the prefabricated blade root is lowered; the temperature difference between different partitions is eliminated, so that the temperature of a product can be stably increased along with a curing curve in the curing process, the mold comprises a mold assembly and further comprises a temperature control system, a mold body comprises an upper mold and a lower mold, and the upper mold and the lower mold are provided with an upper mold cavity and a lower mold cavity correspondingly. The upper mold cavity and the lower mold cavity are matched with each other to form a blade root storage and manufacturing space, a mold opening and closing structure is arranged between the upper mold and the lower mold, the temperature control system comprises a plurality of first upper outer pipes, a plurality of second upper outer pipes, a plurality of first lower outer pipes and a plurality of second lower outer pipes, and the first upper outer pipes and the second upper outer pipes are arranged in the upper mold.

Description

Technical Field

[0001] The invention relates to the technical field of molds, and in particular to a mold for eliminating silver streaks and whitening of prefabricated blade roots and a heating arrangement method. Background Art

[0002] As we all know, in order to better capture more wind energy, the swept area of ​​the fan is one of the important parameters. Therefore, the length of the blades in the fan is designed to be longer and longer, and the cloth layer in the root area of ​​the blade is getting thicker and thicker. The corresponding infusion system, heating curve and temperature control are becoming more and more difficult. The silver streak and whitening phenomenon in the root area of ​​the blade has gradually attracted the attention of engineers. In order to reduce the occurrence of silver streak and whitening in the root area of ​​the blade, we propose a mold and heating arrangement method for eliminating the silver streak and whitening prefabricated blade root.

[0003] In order to ensure the uniformity of specifications and repeatability of blade root preparation during blade root preparation, molds for prefabricated blade roots were manufactured and widely used. In the blade root prefabrication process, during the resin curing process, different exothermic peak temperatures will appear in different areas, resulting in different temperatures in local areas of the blade root, which in turn causes temperature differences between various areas on the blade root, and ultimately causes silver streaks to turn white. Currently, most mold products only have temperature measurement functions. Engineers use the temperature feedback from the mold temperature control probe to lower the temperature of the curing curve to control the silver streaks. Therefore, the temperature control during the blade root preparation process is relatively passive, which makes it difficult to actively control the silver streaks on the blade roots, and its practicality needs to be further improved. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a mold and heating arrangement method for eliminating silver streaks and whitening of prefabricated blade roots. The method installs a temperature control system in the mold to monitor and control the temperatures of different partitions of the product in real time. During the resin curing process, the areas with excessively high temperatures are cooled or not heated, and the areas with excessively low temperatures are heated, thereby eliminating the temperature difference between different partitions. This allows the product to be stably heated along the curing curve during the curing process.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mold for eliminating silver streaks and whitening of prefabricated blade roots, comprising a mold assembly and a temperature control system, wherein the mold body comprises an upper mold and a lower mold, wherein the upper mold and the lower mold are respectively provided with an upper mold cavity and a lower mold cavity, wherein the upper mold cavity and the lower mold cavity cooperate with each other to form a storage and manufacturing space for the blade roots, and an opening and closing mold structure is provided between the upper mold and the lower mold, wherein the temperature control system comprises a plurality of first upper outer tubes, a plurality of second upper outer tubes, a plurality of first lower outer tubes and a plurality of second lower outer tubes, wherein the plurality of first upper outer tubes and the plurality of second upper outer tubes are all provided in the upper mold, and the plurality of first upper outer tubes are all provided with first upper inner tubes, A second upper inner tube is arranged in each of the multiple second upper outer tubes, a plurality of the first lower outer tubes and a plurality of the second lower outer tubes are arranged in the lower mold, a first lower inner tube is arranged in each of the multiple first lower outer tubes, a second lower inner tube is arranged in each of the multiple second lower outer tubes, a plurality of the first upper inner tubes and a plurality of the first lower inner tubes are connected with inner and outer connecting tubes, a plurality of the second upper inner tubes and a plurality of the second lower inner tubes are connected with outer and inner connecting tubes, a plurality of the first upper outer tubes and a plurality of the first lower outer tubes are respectively connected with a plurality of the outer and inner connecting tubes, a plurality of the second upper outer tubes and a plurality of the second lower outer tubes are respectively connected with a plurality of the inner and outer connecting tubes, and a plurality of the upper mold and a plurality of the lower mold are respectively connected with a plurality of the inner and outer connecting tubes, and a plurality of the temperature sensors are arranged in each of the upper mold and the lower mold.

[0006] Preferably, the adjacent first upper outer tube and the second upper outer tube are fixedly connected with an upper double-pass frame, an upper conversion part is rotatably connected in the upper double-pass frame, the adjacent first lower outer tube and the second lower outer tube are fixedly connected with a lower double-pass frame, a lower conversion part is rotatably connected in the lower double-pass frame, an upper servo motor and a lower servo motor are respectively installed on the upper double-pass frame and the lower double-pass frame, the upper servo motor is used for rotational adjustment of the upper conversion part relative to the upper double-pass frame, and the lower servo motor is used for rotational adjustment of the lower conversion part relative to the lower double-pass frame.

[0007] Preferably, the upper conversion member and the lower conversion member are both fixedly connected with a first straight tube, a second straight tube, a first cross tube and a second cross tube.

[0008] Preferably, the upper double-through frame and the lower double-through frame are both provided with a first water inlet and a second water inlet, the two first water inlets are both fixedly connected with a first straight quick-connect pipe, the two first straight quick-connect pipes are fixedly connected with a first bent quick-connect pipe, the two first bent quick-connect pipes are respectively inserted into the two first water inlets, the two second water inlets are both fixedly connected with a second straight quick-connect pipe, the two second straight quick-connect pipes are fixedly connected with a second bent quick-connect pipe, and the two second bent quick-connect pipes are respectively inserted into the two second water inlets.

[0009] Preferably, the rotating shafts of the upper servo motor and the lower servo motor are both equipped with driving gears, the upper conversion member and the lower conversion member are both fixedly connected with driven gear rings, and the driving gear is meshed with the driven gear rings.

[0010] Preferably, the mold opening and closing structure includes two external mounting frames, two lifting electric telescopic rods and two rotating electric telescopic rods, the two external mounting frames are fixedly connected to the outside of the lower mold, the two lifting electric telescopic rods are respectively installed in the two external mounting frames, the two external mounting frames are slidably connected with lifting frames, the telescopic rods of the two lifting electric telescopic rods are respectively connected to the two lifting frames, the two rotating electric telescopic rods are respectively installed on the two lifting frames, the two lifting frames are connected to the upper mold, and the telescopic rods of the two rotating electric telescopic rods are connected to the upper mold.

[0011] Preferably, two hinged seats and two hinged ears are fixedly connected to the upper mold, the two hinged seats are respectively hinged to the telescopic rods of the two rotating electric telescopic rods, and the two hinged ears are respectively hinged to the two lifting frames.

[0012] Preferably, two front biased brackets are fixedly connected to the bottom end of the lower mold.

[0013] Preferably, a plurality of lifting ears are fixedly connected to the upper mold.

[0014] A heating arrangement method for eliminating silver streaks and whitening in a prefabricated blade root mold comprises the following steps:

[0015] S1. When in use, first equip multiple temperature sensors with a control computer terminal to form temperature collection and control, and connect the first upper outer tube, the second upper outer tube, the first lower outer tube and the second lower outer tube to the external liquid tube one, connect the first upper inner tube, the second upper inner tube, the first lower inner tube and the second lower inner tube to the external liquid tube two, and connect the opening and closing mold structure to the control circuit.

[0016] S2, the mold opening and closing structure is energized to realize the mold opening and closing operation of the upper mold relative to the lower mold, the upper mold lays the material of the prefabricated blade root relative to the lower mold cavity in the mold opening state relative to the lower mold, and then the upper mold is controlled to close the mold relative to the lower mold. After the mold closing is completed, circulating liquid is sent into the first upper outer tube, the second upper outer tube, the first lower outer tube and the second lower outer tube through the liquid pipe 1, and the circulating liquid is guided by the inner-outer connecting tube and the outer-inner connecting tube and then led out through the first upper inner tube, the second upper inner tube, the first lower inner tube and the second lower inner tube, thereby realizing the temperature control of the upper mold and the lower mold;

[0017] S3. During the operation of the upper mold and the lower mold, multiple temperature sensors detect the temperature of their corresponding detection positions in real time, and transmit the detected values ​​to the control computer terminal. Combined with the display data of the control computer terminal, the flow rate of the circulating liquid sent into the liquid pipe is controlled to achieve the actual adjustment of the temperature of the upper mold and the lower mold.

[0018] Compared with the prior art, the present invention provides a mold and heating arrangement method for eliminating silver streaks and whitening of prefabricated blade roots, which has the following beneficial effects:

[0019] (1) In the present invention, the mold assembly and the mold opening and closing structure are coordinated to form a mold structure that eliminates the silver streaks and whitening of the prefabricated blade root, thereby ensuring the molding preparation of the prefabricated blade root while facilitating the corresponding mold closing and mold opening operations.

[0020] (2) In the present invention, the temperature of different partitions of the product is monitored and controlled in real time by the temperature control system. During the resin curing process, the area with too high temperature is cooled or not heated, and the area with too low temperature is heated to eliminate the temperature difference between different partitions, so that the product can be stably heated along the curing curve during the curing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the upper mold, the upper double-through frame and the hinged ears of the present invention;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the present invention as a whole from another angle;

[0025] Figure 5 For the present invention Figure 4 A schematic diagram of the local enlarged structure at B in the middle;

[0026] Figure 6 For the present invention Figure 4 A schematic diagram of the local enlarged structure at C in the middle;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the lower mold, the lower conversion member and the external mounting frame of the present invention;

[0028] Figure 8 It is a schematic diagram of the exploded three-dimensional structure of the external mounting frame, the lifting electric telescopic rod and the lifting frame of the present invention;

[0029] Fig. 9It is a partially cutaway three-dimensional structural schematic diagram of the cooperation of the first upper outer tube, the second upper outer tube, the first lower outer tube and the second lower outer tube of the present invention;

[0030] Fig.10 It is a schematic diagram of a three-dimensional structure of a cross-section of the upper conversion member, the first straight pipe, the second straight pipe, etc. in cooperation with each other according to the present invention;

[0031] Fig.11 It is a schematic diagram of the three-dimensional structure of the first upper outer tube, the upper double-through frame and the upper conversion member of the present invention;

[0032] Fig.12 It is a schematic diagram of the exploded three-dimensional structure of the inner and outer connecting pipes and the outer and inner connecting pipes matching each other in the present invention;

[0033] Fig.13 It is a schematic diagram of a three-dimensional structure in which the inner and outer connecting pipes and the outer and inner connecting pipes are relatively connected to each other according to the present invention;

[0034] Fig.14 It is a bottom-up three-dimensional structural schematic diagram of the upper mold, the first upper outer tube and the upper double-through frame cooperating with each other in the present invention;

[0035] Fig.15 It is a schematic diagram of the three-dimensional structure of the present invention as a whole, viewed from the top and side.

[0036] In the figure: 1, upper mold; 2, lower mold; 3, first upper outer tube; 4, second upper outer tube; 5, first lower outer tube; 6, second lower outer tube; 7, first upper inner tube; 8, second upper inner tube; 9, first lower inner tube; 10, second lower inner tube; 11, inner and outer connecting tube; 12, outer and inner connecting tube; 13, upper double-through frame; 14, upper conversion member; 15, lower double-through frame; 16, lower conversion member; 17, upper servo motor; 18, lower servo motor; 19, first straight tube; 20, second Straight pipe; 21. First cross pipe; 22. Second cross pipe; 23. First water inlet; 24. Second water inlet; 25. First straight quick-release pipe; 26. First curved quick-release pipe; 27. Second straight quick-release pipe; 28. Second curved quick-release pipe; 29. ​​Driving gear; 30. Driven gear ring; 31. External mounting bracket; 32. Lifting electric telescopic rod; 33. Rotating electric telescopic rod; 34. Lifting bracket; 35. Articulated seat; 36. Articulated ear; 37. Front bias bracket; 38. Lifting ear. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example

[0039] See also Figure 1-15 A mold for eliminating silver streaks and whitening prefabricated blade roots, including a mold assembly and a temperature control system. The mold body includes an upper mold 1 and a lower mold 2. The upper mold 1 and the lower mold 2 are respectively provided with an upper mold cavity and a lower mold cavity. The upper mold cavity and the lower mold cavity cooperate with each other to form a storage and manufacturing space for the blade root. An opening and closing mold structure is provided between the upper mold 1 and the lower mold 2. The opening and closing mold structure includes two external mounting frames 31, two lifting electric telescopic rods 32 and two rotating electric telescopic rods 33. The two external mounting frames 31 are fixedly connected to the outside of the lower mold 2, and the two lifting electric telescopic rods 32 are respectively installed in the two external mounting frames 31. The two external mounting frames 31 are both slidably connected with a lifting frame 34, and the two The telescopic rods of the lifting electric telescopic rod 32 are respectively connected to the two lifting frames 34, the two rotating electric telescopic rods 33 are respectively installed on the two lifting frames 34, the two lifting frames 34 are both connected to the upper mold 1, the telescopic rods of the two rotating electric telescopic rods 33 are both connected to the upper mold 1, and the upper mold 1 is fixedly connected with two hinged seats 35 and two hinged ears 36, the two hinged seats 35 are respectively hinged to the telescopic rods of the two rotating electric telescopic rods 33, and the two hinged ears 36 are respectively hinged to the two lifting frames 34. Through the cooperation of the mold assembly and the opening and closing mold structure, a mold structure for eliminating the silver streaks and whitening of the prefabricated blade roots is formed, which ensures the molding preparation of the prefabricated blade roots while facilitating the corresponding mold closing and opening operations.

[0040] It should be further explained that the temperature control system includes a plurality of first upper outer tubes 3, a plurality of second upper outer tubes 4, a plurality of first lower outer tubes 5 and a plurality of second lower outer tubes 6. The plurality of first upper outer tubes 3 and the plurality of second upper outer tubes 4 are all arranged in the upper mold 1. The plurality of first upper outer tubes 3 are each provided with a first upper inner tube 7. The plurality of second upper outer tubes 4 are each provided with a second upper inner tube 8. The plurality of first lower outer tubes 5 and the plurality of second lower outer tubes 6 are each arranged in the lower mold 2. The plurality of first lower outer tubes 5 are each provided with a first lower inner tube 9. The plurality of second lower outer tubes 6 are each provided with a second lower inner tube 10. The plurality of first upper inner tubes 7 and the plurality of first lower inner tubes 9 are each connected with an inner and outer connecting tube 11. The second upper inner tubes 8 and the plurality of second lower inner tubes 10 are all connected with the outer-inner connecting tube 12, the plurality of first upper outer tubes 3 and the plurality of first lower outer tubes 5 are respectively connected with the plurality of outer-inner connecting tubes 12, the plurality of second upper outer tubes 4 and the plurality of second lower outer tubes 6 are respectively connected with the plurality of inner-outer connecting tubes 11, and the upper mold 1 and the lower mold 2 are both provided with a plurality of temperature sensors. Through the configuration of the temperature control system, the temperature of different partitions of the product is monitored and controlled in real time. During the resin curing process, the area with too high temperature is cooled down or not heated, and the area with too low temperature is heated up, so as to eliminate the temperature difference between different partitions, so that the product can be stably heated up along the curing curve during the curing process.

[0041] It should be further explained that the adjacent first upper outer tube 3 and the second upper outer tube 4 are fixedly connected to an upper double-pass frame 13, and an upper conversion member 14 is rotatably connected in the upper double-pass frame 13. The adjacent first lower outer tube 5 and the second lower outer tube 6 are fixedly connected to a lower double-pass frame 15, and a lower conversion member 16 is rotatably connected in the lower double-pass frame 15. An upper servo motor 17 and a lower servo motor 18 are respectively installed on the upper double-pass frame 13 and the lower double-pass frame 15. The upper servo motor 17 is used for rotation adjustment of the upper conversion member 14 relative to the upper double-pass frame 13, and the lower servo motor 18 is used for rotation adjustment of the lower conversion member 16 relative to the lower double-pass frame 15. The upper conversion member 14 and the lower conversion member 16 are both fixedly connected with the first straight pipe 19, the second straight pipe 20, the first cross pipe 21 and the second cross pipe 22, so as to switch the flow direction of the circulating liquid between the first upper outer pipe 3, the second upper outer pipe 4, the first lower outer pipe 5 and the second lower outer pipe 6 and the first upper inner pipe 7, the second upper inner pipe 8, the first lower inner pipe 9 and the second lower inner pipe 10 respectively. The upper double-through frame 13 and the lower double-through frame 15 are both provided with the first water inlet 23 and the second water inlet 24, and the first straight pipe 21 and the second cross pipe 22 are both fixedly connected with the first straight pipe 21 and the second cross pipe 22. 5, the two first straight quick pipes 25 are fixedly connected with the first curved quick pipes 26, the two first curved quick pipes 26 are respectively inserted into the two first water inlets 23, the two second water inlets 24 are fixedly connected with the second straight quick pipes 27, the two second straight quick pipes 27 are fixedly connected with the second curved quick pipes 28, the two second curved quick pipes 28 are respectively inserted into the two second water inlets 24, so as to facilitate the communication of the first upper outer pipe 3, the second upper outer pipe 4, the first lower outer pipe 5 and the second lower outer pipe 6 with respect to the external liquid pipe 1, as well as the first upper inner pipe 7, the second upper inner pipe 8, the first lower inner pipe 9 and The second lower inner tube 10 is connected to the external liquid tube 2, and the rotating shafts of the upper servo motor 17 and the lower servo motor 18 are both equipped with a driving gear 29. The upper conversion member 14 and the lower conversion member 16 are both fixedly connected with a driven gear ring 30. The driving gear 29 is meshed with the driven gear ring 30 to realize the respective rotation drive and control of the upper conversion member 14 and the lower conversion member 16. The bottom end of the lower mold 2 is fixedly connected with two front bias brackets 37, which form corresponding supports for the matching lower mold 2. A plurality of lifting ears 38 are fixedly connected to the upper mold 1 to provide auxiliary force points for the lifting of the upper mold 1.

[0042] In summary, the working process of the mold for eliminating silver streaks and whitening of prefabricated blade roots is as follows: when in use, firstly, a plurality of temperature sensors are equipped with a control computer terminal to form temperature collection and control, and the first upper outer tube 3, the second upper outer tube 4, the first lower outer tube 5 and the second lower outer tube 6 are connected to the external liquid tube 1, and the first upper inner tube 7, the second upper inner tube 8, the first lower inner tube 9 and the second lower inner tube 10 are connected to the external liquid tube 2, that is, the first straight fast tube 25 and the second straight fast tube 27 are connected to the external liquid tube 1, and the first curved fast tube 26 and the second curved fast tube 2 8 is connected to the external liquid pipe 2, and the control circuit is connected to the mold opening and closing structure, that is, the control power supply is connected to the lifting electric telescopic rod 32 and the rotating electric telescopic rod 33. The mold opening and closing structure is energized to realize the mold opening and mold closing operation of the upper mold 1 relative to the lower mold 2. When the upper mold 1 is opened relative to the lower mold 2, the lifting electric telescopic rod 32 is energized first to realize the synchronous lifting of the two lifting frames 34, and then the rotating electric telescopic rod 33 is operated to realize the rotation drive of the upper mold 1 relative to the lifting frame 34, and then the rotation adjustment of the upper mold 1 relative to the lower mold 2 is achieved, so that the upper mold 1 is opened relative to the lower mold 2. There is a larger working space between the upper mold 1 and the lower mold 2. The upper mold 1 is relative to the lower mold 2 in the open state to lay the material of the prefabricated blade root relative to the lower mold cavity, and then the upper mold 1 is controlled to form a mold relative to the lower mold 2. During the mold closing process, the rotating electric telescopic rod 33 first works to control the upper mold 1 to form a relative rotation relative to the lower mold 2, and then the lifting electric telescopic rod 32 works to control the upper mold 1 to fall relative to the lower mold 2 and reset. After the mold closing is completed, the liquid is sent into the first upper outer tube 3, the second upper outer tube 4, the first lower outer tube 5 and the second lower outer tube 6 through the liquid pipe. The circulating liquid is guided by the inner-outer connecting tube 11 and the outer-inner connecting tube 12 and then led out through the first upper inner tube 7, the second upper inner tube 8, the first lower inner tube 9 and the second lower inner tube 10, so as to realize the temperature control of the upper mold 1 and the lower mold 2. During the operation of the upper mold 1 and the lower mold 2, multiple temperature sensors detect the temperature of their corresponding detection positions in real time, and transmit the detected values ​​to the control computer terminal. Combined with the display data of the control computer terminal, the flow rate of the circulating liquid sent into the liquid tube 1 is controlled to achieve the actual adjustment of the temperature of the upper mold 1 and the lower mold 2.

[0043] Furthermore, combined with actual operation experience, when multiple first upper outer tubes 3, multiple second upper outer tubes 4, multiple first lower outer tubes 5 and multiple second lower outer tubes 6 are arranged, the heating zones of the upper mold 1 and the lower mold 2 need to be refined, and the axial area of ​​the blade root at 0mm-2000mm is determined as the high-frequency generation area of ​​silver streaks and whitening. The upper mold cavity and the lower mold cavity are distributed into multiple axial and chordal partitions of 600mm*600mm, and the multiple partitions are numbered, and multiple temperature sensors are evenly arranged in the multiple partitions. The temperature sensors need to be installed on the inner surfaces of the upper mold cavity and the lower mold cavity, which can more directly detect the curing temperature during the curing process of the product. By observing Observe the temperature difference of different partitions and adjust the temperature. The temperature difference between adjacent partitions is maintained at 1-2°C. During the temperature control process, the temperature difference between multiple partitions is controlled so that when the resin releases high heat during the product heating process, the overheated partition can be effectively cooled down. The root product temperature is actively controlled to follow the preparation curve to effectively control the temperature deviation. Multiple first upper outer tubes 3 are respectively arranged in multiple partitions of the upper mold 1, multiple second upper outer tubes 4 are respectively arranged in multiple partitions of the upper mold 1, multiple first lower outer tubes 5 are respectively arranged in multiple partitions of the lower mold 2, and multiple second lower outer tubes 6 are respectively arranged in multiple partitions of the lower mold 2.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mold for eliminating silver streaks and whitening of prefabricated blade roots, comprising a mold assembly, characterized in that: The mold body also includes a temperature control system. The mold body includes an upper mold (1) and a lower mold (2). The upper mold (1) and the lower mold (2) are respectively provided with an upper mold cavity and a lower mold cavity. The upper mold cavity and the lower mold cavity cooperate with each other to form a storage and manufacturing space for the blade root. An opening and closing mold structure is provided between the upper mold (1) and the lower mold (2). The temperature control system includes a plurality of first upper outer tubes (3), a plurality of second upper outer tubes (4), a plurality of first lower outer tubes (5) and a plurality of second lower outer tubes (6). The plurality of first upper outer tubes (3) and the plurality of second upper outer tubes (4) are all provided in the upper mold (1). The plurality of first upper outer tubes (3) are each provided with a first upper inner tube (7). The plurality of second upper outer tubes (4) are each provided with a second upper inner tube (8). The plurality of first lower outer tubes (5) are each provided with a first upper inner tube (9). and a plurality of second lower outer tubes (6) are arranged in the lower mold (2); a first lower inner tube (9) is arranged in each of the plurality of first lower outer tubes (5); a second lower inner tube (10) is arranged in each of the plurality of second lower outer tubes (6); a plurality of the first upper inner tubes (7) and a plurality of the first lower inner tubes (9) are connected to an inner and outer connecting tube (11); a plurality of the second upper inner tubes (8) and a plurality of the second lower inner tubes (10) are connected to an outer and inner connecting tube (12); a plurality of the first upper outer tubes (3) and a plurality of the first lower outer tubes (5) are respectively connected to a plurality of the outer and inner connecting tubes (12); a plurality of the second upper outer tubes (4) and a plurality of the second lower outer tubes (6) are respectively connected to a plurality of the inner and outer connecting tubes (11); and a plurality of temperature sensors are arranged in the upper mold (1) and the lower mold (2).

2. A mold for eliminating silver streaks and whitening of prefabricated blade roots according to claim 1, characterized in that: The first upper outer tube (3) and the second upper outer tube (4) are fixedly connected to an upper double-pass frame (13), and an upper conversion member (14) is rotatably connected inside the upper double-pass frame (13). The first lower outer tube (5) and the second lower outer tube (6) are fixedly connected to a lower double-pass frame (15), and a lower conversion member (16) is rotatably connected inside the lower double-pass frame (15). An upper servo motor (17) and a lower servo motor (18) are respectively installed on the upper double-pass frame (13) and the lower double-pass frame (15). The upper servo motor (17) is used for rotational adjustment of the upper conversion member (14) relative to the upper double-pass frame (13), and the lower servo motor (18) is used for rotational adjustment of the lower conversion member (16) relative to the lower double-pass frame (15).

3. The mold for eliminating silver streaks and whitening of prefabricated blade roots according to claim 2, characterized in that: A first straight pipe (19), a second straight pipe (20), a first cross pipe (21) and a second cross pipe (22) are fixedly connected inside the upper conversion member (14) and the lower conversion member (16).

4. The mold for eliminating silver streaks and whitening of prefabricated blade roots according to claim 3, characterized in that: The upper double-through frame (13) and the lower double-through frame (15) are both provided with a first water inlet (23) and a second water inlet (24); the two first water inlets (23) are both fixedly connected with a first straight quick-connect pipe (25); the two first straight quick-connect pipes (25) are fixedly connected with a first bent quick-connect pipe (26); the two first bent quick-connect pipes (26) are respectively inserted into the two first water inlets (23); the two second water inlets (24) are both fixedly connected with a second straight quick-connect pipe (27); the two second second straight quick-connect pipes (27) are fixedly connected with a second bent quick-connect pipe (28); the two second bent quick-connect pipes (28) are respectively inserted into the two second water inlets (24).

5. The mold for eliminating silver streaks and whitening of prefabricated blade roots according to claim 4, characterized in that: The rotating shafts of the upper servo motor (17) and the lower servo motor (18) are both equipped with driving gears (29), and the upper conversion member (14) and the lower conversion member (16) are both fixedly connected with driven gear rings (30), and the driving gear (29) is meshed with the driven gear rings (30).

6. The mold for eliminating silver streaks and whitening of prefabricated blade roots according to claim 5, characterized in that: The mold opening and closing structure comprises two external mounting frames (31), two lifting electric telescopic rods (32) and two rotating electric telescopic rods (33); the two external mounting frames (31) are fixedly connected to the outside of the lower mold (2); the two lifting electric telescopic rods (32) are respectively mounted in the two external mounting frames (31); the two external mounting frames (31) are slidably connected with a lifting frame (34); the telescopic rods of the two lifting electric telescopic rods (32) are respectively connected to the two lifting frames (34); the two rotating electric telescopic rods (33) are respectively mounted on the two lifting frames (34); the two lifting frames (34) are connected to the upper mold (1); and the telescopic rods of the two rotating electric telescopic rods (33) are connected to the upper mold (1).

7. The mold for eliminating silver streaks and whitening of prefabricated blade roots according to claim 6, characterized in that: Two hinged seats (35) and two hinged ears (36) are fixedly connected to the upper mold (1); the two hinged seats (35) are respectively hinged to the telescopic rods of the two rotating electric telescopic rods (33); and the two hinged ears (36) are respectively hinged to the two lifting frames (34).

8. The mold for eliminating silver streaks and whitening of prefabricated blade roots according to claim 7, characterized in that: The bottom end of the lower mold (2) is fixedly connected to two front biased brackets (37).

9. The mold for eliminating silver streaks and whitening of prefabricated blade roots according to claim 8, characterized in that: A plurality of lifting ears (38) are fixedly connected to the upper mold (1).

10. A heating arrangement method for eliminating silver streaks and whitening of a prefabricated blade root mold, characterized in that: A mold for eliminating silver streaks and whitening of prefabricated blade roots according to any one of claims 1 to 9 is used, comprising the following steps: S1. When in use, firstly, a plurality of temperature sensors are equipped with a control computer terminal to form temperature collection and control, and the first upper outer tube (3), the second upper outer tube (4), the first lower outer tube (5) and the second lower outer tube (6) are connected to the external liquid tube 1, the first upper inner tube (7), the second upper inner tube (8), the first lower inner tube (9) and the second lower inner tube (10) are connected to the external liquid tube 2, and the opening and closing mold structure is connected to the control circuit. S2, the mold opening and closing structure is energized to realize the mold opening and closing operation of the upper mold (1) relative to the lower mold (2); the upper mold (1) lays the material of the prefabricated blade root relative to the lower mold cavity in the mold opening state relative to the lower mold (2); then, the upper mold (1) is controlled to form a mold closing relative to the lower mold (2); after the mold closing is completed, circulating liquid is sent into the first upper outer tube (3), the second upper outer tube (4), the first lower outer tube (5) and the second lower outer tube (6) through the liquid pipe; the circulating liquid is guided by the inner and outer connecting tubes (11) and the outer and inner connecting tubes (12) and then led out through the first upper inner tube (7), the second upper inner tube (8), the first lower inner tube (9) and the second lower inner tube (10), thereby realizing the temperature control of the upper mold (1) and the lower mold (2); S3, during the operation of the upper mold (1) and the lower mold (2), multiple temperature sensors detect the temperatures of their corresponding detection positions in real time, and transmit the detected values ​​to the control computer terminal. Combined with the display data of the control computer terminal, the flow rate of the circulating liquid sent into the liquid pipe is controlled to achieve actual adjustment of the temperature of the upper mold (1) and the lower mold (2).

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