A rotational molding mold with a thermal energy storage function

Abstract

The present invention relates to the technical field of rotational molding, and specifically, to a rotational molding mold with a heat energy storage function, which includes a processing table. Above the processing table, a storage structure is provided. Above the processing table, an intermittent structure is provided. One side of the intermittent structure is provided with an adjustment structure. Through the convex column and the guide groove formed inside the heat preservation sleeve, the present invention enables it to rotate inside the heat preservation sleeve. When the first limiting ring rotates, the ventilation holes formed on the surfaces of the first limiting ring and the second limiting ring can intermittently coincide, so that the inside of the heat preservation sleeve is separated into two sealed areas. At this time, when cold air is injected into the heat preservation sleeve through the air inlet pipe, the hot air emitted by the shaping barrel can have sufficient time to mix with the cold air, and then the mixed hot air is extracted into the connecting pipe through the output shaft end of the air extractor, avoiding the situation that the shaping barrel cannot be fully cooled when storing hot air.

Description

Technical Field

[0001] The present invention relates to the technical field of rotational molding, and more specifically, to a rotational molding mold with a thermal energy storage function. Background Art

[0002] Rotational molding, also known as rotomolding, rotational forming, rotary forming, etc., is a method for blow molding hollow thermoplastic plastics. In this method, plastic raw materials are first added to the mold, and then the mold rotates continuously along two perpendicular axes and is heated. Under the action of gravity and thermal energy, the plastic raw materials in the mold gradually and evenly coat, melt and adhere to the entire surface of the mold cavity, forming the required shape, and then cooling and shaping to form the product.

[0003] When cooling the formed mold, it is usually cooled by cold air externally provided. However, when the mold is cooled, since the surface of the mold still has a too high temperature at this time, in order to cool it, it is usually necessary to increase the air flow rate, and the hot air emitted by the mold is carried away by the cold air. In this process, a large amount of hot air cannot be collected, which will lead to waste of energy.

[0004] At the same time, when extracting hot air, the existing devices usually install the air extractor outside the heat insulation sleeve and then extract the hot air. However, since the size of the heat insulation sleeve is slightly larger than the size of the mold, if only a single angle of extraction can be performed when extracting hot air, the extraction efficiency will be reduced. In view of this, we propose a rotational molding mold with a thermal energy storage function. Summary of the Invention

[0005] The purpose of the present invention is to provide a rotational molding mold with a thermal energy storage function to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides a rotational molding mold with a thermal energy storage function, including a processing table, a storage structure is arranged above the processing table, an intermittent structure is arranged above the processing table, and an adjustment structure is arranged on one side of the intermittent structure;

[0007] When the storage structure rotates, it drives the intermittent structure to reciprocate. When the intermittent structure reciprocates, it drives the adjustment structure to rotate above the storage structure. At the same time, when the intermittent structure moves, it drives the adjustment structure to rotate, changing the angle of the storage structure for extracting air.

[0008] As a further improvement of the technical solution, a first motor is installed above the processing table. The output shaft end of the first motor is fixedly connected with a first pulley. The outside of the first pulley is connected with a second pulley through a belt drive. The center of the second pulley is fixedly connected with a first rotating shaft. On the side of the first rotating shaft away from the second pulley, there is a shaping barrel. The shaping barrel is composed of two cavities with the same size up and down, and the upper and lower cavities are connected by threads. The lower cavity of the shaping barrel is fixedly connected with the first rotating shaft;

[0009] A heat preservation sleeve is sleeved outside the shaping barrel. The inside of the heat preservation sleeve is made of a magnetic material, and magnetic foam for heat preservation is installed between the inner side wall and the outer side wall;

[0010] Two groups of guide grooves are opened on the inner side wall of the heat preservation sleeve;

[0011] The lower cavity on the side of the shaping barrel away from the second pulley is fixedly connected with a second rotating shaft. An air inlet pipe is installed inside the second rotating shaft;

[0012] A round hole is opened in the part of the second rotating shaft inside the heat preservation sleeve. The air inlet pipe is connected with the heat preservation sleeve through the round hole;

[0013] The outer side walls of the first rotating shaft and the second rotating shaft are rotationally connected with a fixing frame, and the fixing frame is detachably connected with the processing table.

[0014] As a further improvement of the technical solution, the storage structure includes a second motor installed at the bottom of the processing table. The output shaft end of the second motor is fixedly connected with the output shaft end of an air extractor. The air inlet end of the air extractor is connected with the heat preservation sleeve through connection. The air outlet end of the air extractor is connected with a heat preservation tank through connection. The heat preservation tank is detachably connected with the processing table.

[0015] As a further improvement of the technical solution, a connecting pipe is connected through the inside of the heat preservation tank. A switch valve for controlling the connection between the connecting pipe and the air inlet pipe is installed between the connecting pipe and the air inlet pipe.

[0016] As a further improvement of the technical solution, the intermittent structure includes a cam fixedly connected with the output shaft end of the second motor. A chute is opened at the upper end of the cam, and a connecting plate is slidably connected inside the chute. The side of the connecting plate away from the cam is fixedly connected with a sliding plate. The upper and lower sides of the sliding plate are slidably connected with the processing table and the heat preservation sleeve respectively. The side of the sliding plate away from the processing table is magnetically connected with a first limiting ring.

[0017] As a further improvement of the technical solution, two convex columns are fixedly connected to the outer side wall of the first limiting ring, and the two convex columns are slidably connected with two groups of guide grooves opened on the inner side wall of the heat preservation sleeve;

[0018] On the side of the first limiting ring away from the first rotating shaft, a second limiting ring is rotatably connected. Ventilation holes are alternately arranged on the surfaces of the first limiting ring and the second limiting ring;

[0019] The first limiting ring and the second limiting ring are respectively slidably connected to the inner side wall of the heat preservation sleeve;

[0020] On the side of the first limiting ring close to the first rotating shaft, a spring assembly is fixedly connected.

[0021] As a further improvement of this technical solution, the adjusting structure includes a rotating plate rotatably connected to the heat preservation sleeve. The rotating plate is rotatably connected to the first rotating shaft, and the rotating plate is slidably connected to the spring assembly;

[0022] A connecting shaft is rotatably connected to the side of the rotating plate close to the plastic shaping barrel. A swinging plate is fixedly connected to the outer side wall of the connecting shaft away from the rotating plate.

[0023] As a further improvement of this technical solution, a first limiting plate is fixedly connected to the outer side wall of the spring assembly. The first limiting plate is inside the heat preservation sleeve. On the side of the first limiting plate close to the first rotating shaft, a second limiting plate fixedly connected to the spring assembly is provided. The second limiting plate is outside the heat preservation sleeve.

[0024] As a further improvement of this technical solution, a connecting block is fixedly connected to the outside of the spring assembly. A sliding sleeve is sleeved outside the connecting block. A fixing sleeve is fixedly connected to the side of the sliding sleeve close to the first rotating shaft. A wedge-shaped groove is opened on the inner side wall of the fixing sleeve, and a round column is slidably connected inside the wedge-shaped groove. One end of the round column away from the fixing sleeve is fixedly connected to the connecting shaft.

[0025] Compared with the prior art, the beneficial effects of the present invention:

[0026] 1. In this rotational molding mold with a heat energy storage function, when the intake pipe cools the inside of the heat preservation sleeve, the hot air inside the heat preservation sleeve is extracted by the output shaft end of the air extractor. When extracting the hot air, the first limiting ring slides in the heat preservation sleeve. The first limiting ring can rotate inside the heat preservation sleeve through the convex column and the guide groove opened inside the heat preservation sleeve. When the first limiting ring rotates, the ventilation holes opened on the surfaces of the first limiting ring and the second limiting ring can intermittently coincide, so that the inside of the heat preservation sleeve is separated into two sealed areas. Thus, when the intake pipe injects cold air into the heat preservation sleeve, the hot air emitted by the plastic shaping barrel has enough time to mix with the cold air, and then the mixed hot air is extracted into the connecting pipe by the air extractor, avoiding the situation that the plastic shaping barrel cannot be fully cooled when storing the hot air.

[0027] 2. In the rotational molding mold with a thermal energy storage function, when the first limiting ring drives the rotating plate to rotate during the rotation of the heat preservation sleeve, the rotating plate drives the swing plate and the heat preservation sleeve to rotate synchronously through the connecting shaft when rotating. Therefore, when the air extraction shaft of the air extractor extracts the hot air inside the heat preservation sleeve, the hot air at different positions inside the heat preservation sleeve can be extracted.

[0028] 3. In the rotational molding mold with a thermal energy storage function, at the same time, when the first limiting ring slides towards the side close to the first rotating shaft, the sliding sleeve is driven to move through the spring assembly and the connecting block. When the sliding sleeve moves, the swing plate is driven to rotate through the fixed sleeve. Since the swing plate is arranged above the end of the air extraction shaft of the air extractor, the angle of the hot air extracted by the end of the air extraction shaft of the air extractor can be changed when the swing plate rotates, increasing the flow rate of the hot air inside the heat preservation sleeve. Description of the Drawings

[0029] Figure 1 Schematic assembly diagram of the overall structure of the present invention;

[0030] Figure 2 Schematic diagram of the internal structure of the heat preservation sleeve of the present invention;

[0031] Figure 3 Stereogram of the connection relationship between the air extractor and the heat preservation tank of the present invention;

[0032] Figure 4 Stereogram of the storage structure of the present invention;

[0033] Figure 5 Stereogram of the intermittent structure of the present invention;

[0034] Figure 6 Stereogram of the adjustment structure of the present invention;

[0035] Figure 7 Stereogram of the structure of the swing plate and the spring assembly of the present invention;

[0036] Figure 8 Stereogram of the structure of the swing plate and the fixed sleeve of the present invention;

[0037] Figure 9 Stereogram of the positional relationship between the second limiting plate and the rotating plate of the present invention;

[0038] Figure 10 Magnified stereogram of the structural parts at position A of the present invention.

[0039] The meanings of the reference numerals in the figure are as follows:

[0040] Processing table; 11. First motor; 12. First pulley; 13. Second pulley; 1301. First rotating shaft; 14. Heat preservation sleeve; 15. Shaping barrel; 16. Second rotating shaft; 17. Intake pipe;

[0041] 2. Reserve structure; 21. Second motor; 22. Air extractor; 23. Heat preservation tank; 24. Connecting pipe;

[0042] 3. Intermittent structure; 31. Cam; 32. Connecting plate; 33. Sliding plate; 34. First limiting ring; 35. Second limiting ring; 36. Spring assembly;

[0043] 4. Adjusting structure; 41. Rotating plate; 42. Connecting shaft; 43. Oscillating plate; 44. First limiting plate; 45. Second limiting plate; 46. Connecting block; 47. Sliding sleeve; 48. Fixed sleeve. Detailed implementation manners

[0044] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the protection scope of the present invention.

[0045] Please refer to Figures 1 - 10 As shown in the figure, the present embodiment provides rotational molding, also known as rotational molding, rotational forming, rotary forming, etc., which is a method for forming hollow thermoplastic plastics. In this method, plastic raw materials are first added into a mold, and then the mold rotates continuously along two perpendicular axes and is heated. Under the action of gravity and heat energy, the plastic raw materials in the mold gradually and evenly coat, melt and adhere to the entire surface of the mold cavity, forming the required shape, and then being cooled and shaped into a product.

[0046] A rotational molding mold with a heat energy reserve function includes a processing table 1. A reserve structure 2 is arranged above the processing table 1. An intermittent structure 3 is arranged above the processing table 1. An adjusting structure 4 is arranged on one side of the intermittent structure 3;

[0047] When the reserve structure 2 rotates, it drives the intermittent structure 3 to reciprocate. When the intermittent structure 3 reciprocates, it drives the adjusting structure 4 to rotate above the reserve structure 2. At the same time, when the intermittent structure 3 moves, it drives the adjusting structure 4 to rotate, changing the angle at which the reserve structure 2 extracts air.

[0048] When cooling a formed mold, it is usually cooled by externally provided cold air. However, when the mold is cooled, since the surface of the mold still has a too high temperature at this time, increasing the air flow rate is usually required for cooling. The hot air emitted by the mold is carried away by the cold air. In this process, a large amount of hot air cannot be collected, which will cause waste of energy. In the present invention, the second motor 21 drives the output shaft end of the air extractor 22 to rotate. When the output shaft end of the air extractor 22 rotates, the hot air inside the heat preservation sleeve 14 is extracted. At the same time, when the reserve structure 2 rotates, it drives the first limiting ring 34 to rotate inside the heat preservation sleeve 14. When the first limiting ring 34 rotates, the ventilation holes formed on its surface will coincide with the ventilation holes formed on the surface of the second limiting ring 35, so as to intermittently extract the hot air inside the heat preservation sleeve 14, avoiding the uneven heat dissipation of the shaping barrel 15;

[0049] In the existing device, the air extractor is usually installed outside the heat preservation sleeve. When extracting the hot air inside the heat preservation sleeve 14, since the size of the heat preservation sleeve is slightly larger than that of the mold, if the hot air can only be extracted at a single angle during the extraction, the extraction efficiency will be reduced. In the present invention, when the spring assembly 36 slides toward the side close to the first rotating shaft 1301, the spring assembly 36 drives the connecting block 46 fixedly connected to its outer side wall to drive the sliding sleeve 47 to move toward the side close to the first rotating shaft 1301. The movement of the sliding sleeve 47 drives the fixed sleeve 48 to move toward the side close to the first rotating shaft 1301. At this time, the fixed sleeve 48 drives the connecting shaft 42 to rotate through the cooperation between the wedge-shaped groove formed in its inner part and the circular column. When the connecting shaft 42 rotates, it drives the swing plate 43 to rotate, thereby changing the inclination angle of the connecting shaft 42, so that the output shaft end of the air extractor 22 can extract hot air at different angles.

[0050] A first motor 11 is installed above the processing table 1. The output shaft end of the first motor 11 is fixedly connected with a first belt pulley 12. The first belt pulley 12 is externally connected with a second belt pulley 13 through a belt. The center of the second belt pulley 13 is fixedly connected with a first rotating shaft 1301. A shaping barrel 15 is arranged on the side of the first rotating shaft 1301 away from the second belt pulley 13. The shaping barrel 15 is composed of two cavities with the same size up and down, and the upper and lower cavities are connected by threads. The lower cavity of the shaping barrel 15 is fixedly connected with the first rotating shaft 1301. A heat preservation sleeve 14 is sleeved outside the shaping barrel 15. The inside of the heat preservation sleeve 14 is made of a magnetic material, and a magnetic foam for heat preservation is installed between the inner side wall and the outer side wall of the heat preservation sleeve 14;

[0051] Two groups of guide grooves are formed on the inner side wall of the heat preservation sleeve 14;

[0052] A second rotating shaft 16 is fixedly connected to the side of the lower cavity of the shaping barrel 15 away from the second belt pulley 13. An air inlet pipe 17 is installed inside the second rotating shaft 16;

[0053] A circular hole is provided in the part of the second rotating shaft 16 inside the heat preservation sleeve 14, and the air inlet pipe 17 is connected to the heat preservation sleeve 14 in a penetrating manner through the circular hole;

[0054] A fixing frame is rotatably connected to the outer side walls of the first rotating shaft 1301 and the second rotating shaft 16, and the fixing frame is detachably connected to the processing table 1;

[0055] Reference Figure 1 and Figure 2 Considering that when the plastic in the shaping barrel 15 is processed, the air inlet pipe 17 cannot inject hot air or cold air into the heat preservation sleeve 14 through externally arranged equipment, a circular hole is provided in the part of the second rotating shaft 16 inside the heat preservation sleeve 14. When the first motor 11 is started, the first pulley 12 fixedly connected to the output shaft end thereof rotates, the first pulley 12 drives the second pulley 13 to rotate through a belt, and when the second pulley 13 rotates, the shaping barrel 15 is driven to rotate through the first rotating shaft 1301. At this time, the rotation of the shaping barrel 15 drives the second rotating shaft 16 to rotate. Since the air inlet pipe 17 is inside the second rotating shaft 16, when the second rotating shaft 16 rotates, the air inlet pipe 17 can normally inject hot air or cold air into the heat preservation sleeve 14 through external equipment, so as to ensure that the plastic raw materials inside the shaping barrel 15 can be rotomolded;

[0056] After the processing and cooling of the plastic raw materials inside the shaping barrel 15 are completed, the upper cavity of the shaping barrel 15 is disassembled from the lower cavity by the staff, and then the rotomolded product processed by the shaping barrel 15 is taken out.

[0057] The storage structure 2 includes a second motor 21 installed at the bottom of the processing table 1. The output shaft end of the second motor 21 is fixedly connected to the output shaft end of the air extractor 22. The air inlet end of the air extractor 22 is connected to the heat preservation sleeve 14 in a penetrating manner, and the air outlet end of the air extractor 22 is connected to a heat preservation tank 23 in a penetrating manner. The heat preservation tank 23 is detachably connected to the processing table 1.

[0058] Reference Figure 2 and Figure 3 Considering that after the plastic raw materials in the shaping barrel 15 are rotomolded, when the shaping barrel 15 is cooled inside the heat preservation sleeve 14, when injecting cold air through an external device communicated with the air inlet pipe 17, the cold air needs to circulate rapidly inside the heat preservation sleeve 14 to dissipate heat quickly. At this time, the staff starts the second motor 21 to drive the output shaft end of the air extractor 22 to extract the hot air emitted by the shaping barrel 15 inside the heat preservation sleeve 14, and then injects the hot air into the inside of the heat preservation tank 23 communicated with the air outlet end of the air extractor 22 through the output shaft end of the air extractor 22, so as to store the hot air inside the heat preservation sleeve 14 and avoid waste of hot air.

[0059] The interior of the heat preservation tank 23 is connected through a connecting pipe 24, and a switch valve for controlling the connection between the connecting pipe 24 and the intake pipe 17 is installed.

[0060] Reference Figure 2 and Figure 3 In the present invention, considering that the hot air stored inside the heat preservation tank 23 can be reused, when the plastic shaping barrel 15 performs rotational molding on plastic raw materials again, the staff adjusts the switch valve between the heat preservation tank 23 and the heat preservation sleeve 14. At this time, when the intake pipe 17 injects hot air into the inside of the heat preservation sleeve 14, the hot air inside the heat preservation tank 23 will be injected into the inside of the heat preservation sleeve 14 again through the circulation of the air pressure inside itself and the hot air inside the intake pipe 17, so that the hot air inside the heat preservation tank 23 can be recycled.

[0061] The intermittent structure 3 includes a cam 31 fixedly connected to the output shaft end of the second motor 21. A chute is provided at the upper end of the cam 31, and a connecting plate 32 is slidably connected inside the chute. A sliding plate 33 is fixedly connected to the side of the connecting plate 32 away from the cam 31. The upper and lower sides of the sliding plate 33 are slidably connected to the processing table 1 and the heat preservation sleeve 14 respectively. A first limiting ring 34 is magnetically connected to the side of the sliding plate 33 away from the processing table 1;

[0062] After the second motor 21 is started, it drives the cam 31 fixedly connected to its output shaft end to rotate. When the cam 31 rotates, it drives the sliding plate 33 to reciprocate on the outer side wall of the heat preservation sleeve 14 through the chute provided at its upper end and the connecting plate 32. When the sliding plate 33 slides in the direction close to the first rotating shaft 1301, it synchronously drives the first limiting ring 34 magnetically connected to it to slide. When the first limiting ring 34 slides, the convex column fixedly connected to its outer side wall slides in the guide groove provided on the inner side wall of the heat preservation sleeve 14. When the first limiting ring 34 slides, it will rotate reciprocally around its center following the shape of the guide groove.

[0063] Two convex columns are fixedly connected to the outer side wall of the first limiting ring 34, and the two convex columns are slidably connected to two groups of guide grooves provided on the inner side wall of the heat preservation sleeve 14;

[0064] A second limiting ring 35 is rotatably connected to the side of the first limiting ring 34 away from the first rotating shaft 1301. Ventilation holes are alternately provided on the surfaces of the first limiting ring 34 and the second limiting ring 35;

[0065] The first limiting ring 34 and the second limiting ring 35 are respectively slidably connected to the inner side wall of the heat preservation sleeve 14;

[0066] A spring assembly 36 is fixedly connected to the side of the first limiting ring 34 close to the first rotating shaft 1301.

[0067] Reference Figure 4, In the present invention, considering that when the shaping barrel 15 dissipates heat, it is necessary to dissipate heat from the shaping barrel 15 by using cold air injected into the inner part of the heat preservation sleeve 14 through an external device communicating with the air inlet pipe 17. However, when the cold air is injected through the air inlet pipe 17, injecting a large amount of cold air into the inner part of the heat preservation sleeve 14 at one time will cause the cold air in the heat preservation sleeve 14 to not be fully mixed with the hot air dissipated by the shaping barrel 15, resulting in waste of cold air and insufficient cooling of the plastic mold;

[0068] Reference Figure 5 and Figure 6 , when the first limiting ring 34 rotates, the ventilation holes formed on its surface will coincide with the ventilation holes formed on the surface of the second limiting ring 35;

[0069] In the initial state, when the ventilation holes formed on the surface of the first limiting ring 34 do not coincide with the ventilation holes formed on the surface of the second limiting ring 35, the first limiting ring 34 and the second limiting ring 35 isolate the heat preservation sleeve 14 into two sections. At this time, when the cold air is injected into the inner part of the heat preservation sleeve 14 through the air inlet pipe 17, the cold air will be on the side of the second limiting ring 35 away from the first rotating shaft 1301. At this time, the cold air injected into the part of the heat preservation sleeve 14 away from the first rotating shaft 1301 will be fully mixed with the hot air dissipated by the shaping barrel 15. Then, when the ventilation holes formed on the surface of the first limiting ring 34 coincide with the ventilation holes formed on the surface of the second limiting ring 35, the mixed air on the side of the second limiting ring 35 away from the first rotating shaft 1301 will be drawn into the interior of the heat preservation tank 23 by the wind generated at the air inlet end of the air extractor 22, avoiding the situation that the cold air injected into the inner part of the heat preservation sleeve 14 through the air inlet pipe 17 cannot be fully mixed.

[0070] The adjusting structure 4 includes a rotating plate 41 rotatably connected to the heat preservation sleeve 14. The rotating plate 41 is rotatably connected to the first rotating shaft 1301, and the rotating plate 41 is slidably connected to the spring assembly 36;

[0071] A connecting shaft 42 rotatably connected to the side of the rotating plate 41 close to the shaping barrel 15. A swinging plate 43 is fixedly connected to the outer side wall of the connecting shaft 42 away from the rotating plate 41.

[0072] Reference Figure 6 and Figure 7 , in the present invention, considering that the output shaft end of the air extractor 22 is horizontally perpendicular to the heat preservation sleeve 14. When the output shaft end of the air extractor 22 extracts the hot air inside the heat preservation sleeve 14, the mixed hot air extracted by the output shaft end of the air extractor 22 is in the same area above it, thus affecting the efficiency of extracting the mixed hot air;

[0073] When the first limiting ring 34 reciprocates and rotates inside the heat preservation sleeve 14, it drives the rotating plate 41 to rotate synchronously inside the heat preservation sleeve 14 through the spring assembly 36. Since the spring assembly 36 is slidably connected to the rotating plate 41, when the first limiting ring 34 moves towards the side close to the first rotating shaft 1301, the rotating plate 41 will not slide towards the side close to the first rotating shaft 1301 along with the first limiting ring 34;

[0074] When the rotating plate 41 is rotatably connected inside the heat preservation sleeve 14, the rotating plate 41 drives the swing plate 43 to reciprocally rotate above the output shaft end of the air extractor 22 through the connecting shaft 42. The swing plate 43 is inclined in the initial state, which provides a guiding function when the output shaft end of the air extractor 22 extracts hot air. When the swing plate 43 swings, it can enable the output shaft end of the air extractor 22 to extract hot air at different positions inside the heat preservation sleeve 14.

[0075] The first limiting plate 44 fixedly connected to the outer side wall of the spring assembly 36 is inside the heat preservation sleeve 14. A second limiting plate 45 fixedly connected to the spring assembly 36 is provided on the side of the first limiting plate 44 close to the first rotating shaft 1301, and the second limiting plate 45 is outside the heat preservation sleeve 14.

[0076] A connecting block 46 is fixedly connected to the outer side wall of the spring assembly 36. A sliding sleeve 47 is sleeved outside the connecting block 46. A fixing sleeve 48 is fixedly connected to the side of the sliding sleeve 47 close to the first rotating shaft 1301. A wedge-shaped groove is formed in the inner side wall of the fixing sleeve 48, and a circular column is slidably connected inside the wedge-shaped groove. One end of the circular column far from the fixing sleeve 48 is fixedly connected to the connecting shaft 42.

[0077] Reference Figure 8 、 Figure 9 and Figure 10 Considering that when the output shaft end of the air extractor 22 extracts the mixed hot air inside the heat preservation sleeve 14, since the swing plate 43 is inclined in the initial state, if the swing plate 43 cannot be adjusted in time when the output shaft end of the air extractor 22 extracts the hot air inside the heat preservation sleeve 14, it will cause the output shaft end of the air extractor 22 to always extract the hot air in the same direction inside the heat preservation sleeve 14, affecting the mixing of the hot air inside the heat preservation sleeve 14;

[0078] The spring assembly 36 is in a stretched state on the side far from the first rotating shaft 1301, and the spring assembly 36 is in a normal state on the side close to the first rotating shaft 1301;

[0079] When the first limit ring 34 moves towards the side close to the first rotating shaft 1301, at this time, the elasticity of the spring assembly 36 is greater than the frictional force between it and the rotating plate 41. Thus, when the first limit ring 34 drives the spring assembly 36 to move towards the side close to the first rotating shaft 1301, the spring assembly 36 drives the first limit plate 44 fixedly connected to its outer wall to move towards the first rotating shaft 1301. Before the first limit plate 44 fits with the rotating plate 41, the spring assembly 36 drives the connecting block 46 fixedly connected to its outer wall to drive the sliding sleeve 47 to move towards the side close to the first rotating shaft 1301. The movement of the sliding sleeve 47 drives the fixed sleeve 48 to move towards the side close to the first rotating shaft 1301. At this time, the fixed sleeve 48 drives the connecting shaft 42 to rotate through the cooperation between the wedge-shaped groove formed in its inner part and the circular column. When the connecting shaft 42 rotates, it drives the swing plate 43 to rotate. When the swing plate 43 rotates around the connecting shaft 42, the inclination angle of the swing plate 43 will change, so that the end of the output shaft of the air extractor 22 extracts the hot air inside the heat preservation sleeve 14 at different inclination angles of the swing plate 43, increasing the extraction speed of the hot air inside the heat preservation sleeve 14;

[0080] When the first limit ring 34 moves away from the first rotating shaft 1301 through the reserve structure 2, at this time, the spring assembly 36 is in a normal state. Since the elasticity of the spring assembly 36 is greater than the frictional force between it and the rotating plate 41, at this time, the spring assembly 36 pulls the second limit plate 45 to move towards the side close to the first rotating shaft 1301. The spring assembly 36 drives the swing plate 43 to swing again through the cooperation of the above-mentioned connecting block 46 and sliding sleeve 47 and other structures. Thus, the swing plate 43 redirects the airflow extracted by the end of the output shaft of the air extractor 22 again, so as to extract the hot air inside the heat preservation sleeve 14 at different angles, enabling the hot air inside the heat preservation sleeve 14 to have sufficient time to mix.

[0081] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and do not limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotational molding mold with a thermal energy storage function, comprising a processing table (1), characterized in that: Above the processing table (1), a reserve structure (2) is provided. Above the processing table (1), an intermittent structure (3) is provided. On one side of the intermittent structure (3), an adjustment structure (4) is provided; When the reserve structure (2) rotates, it drives the intermittent structure (3) to reciprocate. When the intermittent structure (3) reciprocates, it drives the adjustment structure (4) to rotate above the reserve structure (2). At the same time, when the intermittent structure (3) moves, it drives the adjustment structure (4) to rotate, changing the angle at which the reserve structure (2) extracts air; Above the processing table (1), a first motor (11) is installed. The output shaft end of the first motor (11) is fixedly connected to a first pulley (12). The outside of the first pulley (12) is connected to a second pulley (13) through a belt drive. At the center of the second pulley (13), a first rotating shaft (1301) is fixedly connected. On the side of the first rotating shaft (1301) away from the second pulley (13), a shaping barrel (15) is provided. The shaping barrel (15) is composed of two cavities with the same size up and down, and the upper and lower cavities are connected by threads. The lower cavity of the shaping barrel (15) is fixedly connected to the first rotating shaft (1301); An insulating sleeve (14) is sleeved outside the shaping barrel (15). The inside of the insulating sleeve (14) is made of a magnetic material, and a magnetic foam for heat preservation is installed between the inner side wall and the outer side wall; Two groups of guide grooves are provided on the inner side wall of the insulating sleeve (14); On the lower cavity of the side of the shaping barrel (15) away from the second pulley (13), a second rotating shaft (16) is fixedly connected. An air inlet pipe (17) is installed inside the second rotating shaft (16); A round hole is provided in the part of the second rotating shaft (16) inside the insulating sleeve (14). The air inlet pipe (17) is connected to the insulating sleeve (14) through the round hole; The outer side walls of the first rotating shaft (1301) and the second rotating shaft (16) are rotationally connected to a fixed frame, and the fixed frame is detachably connected to the processing table (1); The reserve structure (2) includes a second motor (21) installed at the bottom of the processing table (1). The output shaft end of the second motor (21) is fixedly connected to the output shaft end of the air extractor (22). The air inlet end of the air extractor (22) is connected to the insulating sleeve (14) through penetration. The air outlet end of the air extractor (22) is connected to a heat preservation tank (23) through penetration. The heat preservation tank (23) is detachably connected to the processing table (1); A connecting pipe (24) is connected to the inside of the heat preservation tank (23) through penetration. A switch valve for controlling the penetration between the connecting pipe (24) and the air inlet pipe (17) is installed; The intermittent structure (3) includes a cam (31) fixedly connected to the end of the output shaft of the second motor (21). A chute is provided at the upper end of the cam (31), and a connecting plate (32) is slidably connected inside the chute. A sliding plate (33) is fixedly connected to the side of the connecting plate (32) away from the cam (31). The upper and lower sides of the sliding plate (33) are slidably connected to the processing table (1) and the heat preservation sleeve (14) respectively. A first limiting ring (34) is magnetically connected to the side of the sliding plate (33) away from the processing table (1). Two convex columns are fixedly connected to the outer side wall of the first limiting ring (34), and the two convex columns are slidably connected to two groups of guide grooves provided on the inner side wall of the heat preservation sleeve (14). A second limiting ring (35) is rotatably connected to the side of the first limiting ring (34) away from the first rotating shaft (1301). Vent holes are alternately provided on the surfaces of the first limiting ring (34) and the second limiting ring (35). The first limiting ring (34) and the second limiting ring (35) are respectively slidably connected to the inner side wall of the heat preservation sleeve (14). A spring assembly (36) is fixedly connected to the side of the first limiting ring (34) close to the first rotating shaft (1301). The adjusting structure (4) includes a rotating plate (41) rotatably connected to the heat preservation sleeve (14). The rotating plate (41) is rotatably connected to the first rotating shaft (1301), and the rotating plate (41) is slidably connected to the spring assembly (36). A connecting shaft (42) is rotatably connected to the side of the rotating plate (41) close to the shaping barrel (15). A swinging plate (43) is fixedly connected to the outer side wall of the connecting shaft (42) away from the rotating plate (41).

2. The rotational molding mold with a thermal energy storage function according to claim 1, characterized in that: A first limiting plate (44) is fixedly connected to the outer side wall of the spring assembly (36). The first limiting plate (44) is inside the heat preservation sleeve (14). A second limiting plate (45) fixedly connected to the spring assembly (36) is provided on the side of the first limiting plate (44) close to the first rotating shaft (1301). The second limiting plate (45) is outside the heat preservation sleeve (14).

3. The rotational molding mold with a thermal energy storage function according to claim 1, characterized in that: A connecting block (46) is fixedly connected to the outside of the spring assembly (36). A sliding sleeve (47) is sleeved outside the connecting block (46). A fixed sleeve (48) is fixedly connected to the side of the sliding sleeve (47) close to the first rotating shaft (1301). A wedge-shaped groove is provided on the inner side wall of the fixed sleeve (48), and a circular column is slidably connected inside the wedge-shaped groove. One end of the circular column away from the fixed sleeve (48) is fixedly connected to the connecting shaft (42).

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