Energy-saving heating equipment for rotational molding product production

Abstract

The invention relates to the technical field of rotational molding, in particular to energy-saving heating equipment for rotational molding product production, which comprises a base, a rotational molding mechanism used for rotational molding of materials is arranged on the base, a sealing mechanism matched with the rotational molding mechanism for rotational molding is arranged on the base, and a preheating mechanism for preheating the rotational molding mechanism is arranged on the base. According to the energy-saving heating equipment for rotational molding product production, on one hand, the preheating area of a rotational molding mold can be accurately controlled according to the preheating mechanism, and a flame projector is more energy-saving; and on the other hand, the size of the space in the rotational molding mold sealed by the sealing cover can be flexibly adjusted through the sealing mechanism according to the size of the rotational molding product.

Description

Technical Field

[0001] The invention relates to the technical field of rotational molding, in particular to energy-saving heating equipment for the production of rotational molding products. Background Art

[0002] The basic process of rotational molding is very simple. Powdered or liquid polymer is placed in a mold and heated. At the same time, the mold rotates and revolves around an axis, and then cooled to form. During the rotational molding process, the mold needs to be continuously heated. However, after the previous product is rotationally molded, the mold is cooled, the product is demoulded, and then the mold is heated to the temperature required for rotational molding. The process is long. At the same time, the heating equipment consumes a lot of energy during the continuous heating to the specified temperature. Summary of the invention

[0003] The object of the present invention is to provide an energy-saving heating device for the production of roto-molded products. On the one hand, it can accurately control the preheating area of ​​the roto-molding mold to make the flamethrower more energy-efficient; on the other hand, by preheating the roto-molding mold before roto-molding the roto-molded product, the time required for the external heating device to heat the roto-molding mold to a certain temperature during the roto-molding process can be reduced, as well as the energy consumption of the external heating device.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: an energy-saving heating device for the production of roto-molded products, comprising a base, a roto-molding mechanism for roto-molding materials is arranged on the base, a closing mechanism cooperating with the roto-molding mechanism is arranged on the base, a preheating mechanism for preheating the roto-molding mechanism is arranged on the base, and a feeding mechanism for automatic feeding is arranged on the preheating mechanism; The sealing mechanism comprises a first driving mechanism and a material storage tank, wherein the first driving mechanism drives the material storage tank to enter and exit the rotational molding mechanism, and a sealing cap is provided at one end of the material storage tank facing the rotational molding mechanism; The preheating mechanism includes a second driving mechanism, a storage cylinder arranged inside the storage tank, and a flamethrower arranged inside the storage cylinder, wherein the second driving mechanism drives the flamethrower to move back and forth between the storage cylinder and the rotational molding mechanism, and the flamethrower is used to be moved by the second driving mechanism to the rotational molding mechanism to heat the rotational molding mechanism; The feeding mechanism includes a third driving mechanism, a feeding device and a feeding box, and the third driving mechanism drives the feeding device to input materials into the feeding box; a retractable cover body is provided at one end of the feeding box facing the rotational molding mechanism, and the retractable cover body matches the preset through hole on the sealing cover, and the cover body and the sealing cover are used to seal the rotational molding mechanism, and the retractable cover body can be sucked and connected with the inner end face of the rotational molding mechanism.

[0005] Furthermore, the first driving mechanism includes a first motor located on a base, a first power shaft is provided at an output end of the first motor, and the first power shaft is provided with the storage tank which moves along the first power shaft when the first power shaft rotates.

[0006] Furthermore, the second driving mechanism includes a second motor mounted on the storage tank and a second power shaft connected to an output end of the second motor; The storage cylinder is located outside the second power shaft; The flame-spraying end of the flame-sprayer is in contact with the inner wall of the storage tube, and the flame-sprayer moves along the second power shaft when the second power shaft rotates.

[0007] Further, the third driving mechanism includes a first synchronous shaft and a second synchronous shaft, and the feeding device includes a feeding roller and a feeding cylinder; When the first synchronous shaft moves with the storage tank, it rubs against the base and then rotates; The second synchronous shaft is inserted into the storage tank, the upper end of the second synchronous shaft rotates synchronously with the first synchronous shaft, and the lower end of the second synchronous shaft is meshed and connected with the feed roller; The feed cylinder is arranged on the outer side of the feed roller, and the feed cylinder is provided with a feed opening.

[0008] Furthermore, a push rod is fixed at one end of the flamethrower, and the loading box is mounted on the push rod; The retractable cover body comprises a telescopic cylinder and an inner cover which are retractable along the moving direction of the flamethrower, one end of the telescopic cylinder is fixed inside the loading box, and the other end of the telescopic cylinder is fixedly connected to the inner cover; One end of the loading box is plugged into the feeding cylinder, and the telescopic cylinder is in a stretched state in the initial state so that the inner cover is pressed tightly against the other end of the loading box; A circle of the inner cover is connected to a circle of through holes of the sealing cover.

[0009] Furthermore, the roto-molding mechanism includes a third motor and a roto-molding mold connected to the output end of the third motor. A magnetic block is fixed inside the roto-molding mold. The magnetic block can be magnetically connected to the inner cover, and the magnetic force of the magnetic adsorption is greater than the pulling force of the telescopic tube in the initial state.

[0010] Furthermore, a friction wheel that rubs against the base is arranged on the first synchronous shaft. When the first synchronous shaft moves following the storage tank, the friction wheel rotates due to friction with the base, and then the friction wheel drives the first synchronous shaft to rotate.

[0011] Furthermore, the second motor is fixedly mounted on one side of the storage tank, and an output end of the second motor extends to the interior of the storage cylinder and is connected to the second power shaft.

[0012] Further, a synchronous belt is installed at one end of the first synchronous shaft, one end of the synchronous belt is connected to the second synchronous shaft, and a stirring blade is arranged on the second synchronous shaft; The second synchronous shaft and one end of the feed roller are both equipped with bevel gears, and the two bevel gears are meshed with each other.

[0013] Furthermore, an outer cover is fixedly installed inside the storage tank, one side of the outer cover is connected to the feed cylinder, and one end of the second synchronization shaft and the feed roller both extend to the inside of the outer cover.

[0014] Compared with the prior art, the present invention has the following beneficial effects: According to the present invention, only a part of the flamethrower end of the flamethrower extends into the interior of the rotational molding mold, and the other part is always in the interior of the storage tube. Moreover, due to the design of the inner wall of the storage tube and the flamethrower end being fitted together, the part of the flamethrower end that is not fitted together with the inner wall of the storage tube can work normally, and the part of the flamethrower end that is fitted together with the inner wall of the storage tube cannot work. On the one hand, the preheating area of ​​the rotational molding mold can be accurately controlled to make the flamethrower more energy-efficient. On the other hand, by preheating the rotational molding mold before the rotational molding of the rotational molding product, the rotational molding mold can be preheated before the rotational molding product is rotationally molded, which can reduce the time required for the external heating of the rotational molding mold to a certain temperature during the rotational molding process, and at the same time reduce the energy consumption of the external heating equipment of the rotational molding mold.

[0015] The present invention can perform rotational molding on the material inside the rotational molding mold. By adopting a cover that automatically extends into the interior of the rotational molding mold and closes the rotational molding mold, on the one hand, the rotational molding mold can be automatically closed for rotational molding, which saves the operator's closing and disassembly operations and improves work efficiency; on the other hand, the position of the cover inside the rotational molding mold can be adjusted according to actual conditions, and the size of the space inside the rotational molding mold closed by the cover can be flexibly adjusted according to the size of the rotational molding product, and the flexibility is relatively strong.

[0016] The present invention can automatically feed and load materials, save manpower and improve work efficiency; at the same time, because the time when the feed roller rotates to feed is synchronized with the movement time of the cover, the required amount of roto-molding raw materials can be automatically controlled according to the size of the roto-molded product, thereby further improving the quality of roto-molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a partial structural schematic diagram of the present invention; Figure 3 This is a partial cross-sectional view of the preheating mechanism of the present invention; Figure 4 The second is a partial cross-sectional view of the preheating mechanism of the present invention; Figure 5This is a partial cross-sectional view of the connection portion between the preheating mechanism and the feeding mechanism of the present invention; Figure 6 The second partial cross-sectional view of the connection portion between the preheating mechanism and the feeding mechanism of the present invention; Figure 7 It is a partial cross-sectional view of the feeding mechanism of the present invention; Figure 8 is a cross-sectional view of a rotational molding mold of the present invention; Fig. 9 The third partial cross-sectional view of the connection portion between the preheating mechanism and the feeding mechanism of the present invention.

[0018] In the figure: 1. base; 2. closing mechanism; 21. first motor; 22. first power shaft; 23. first bearing seat; 24. first connecting seat; 25. storage tank; 26. sealing cover; 3. preheating mechanism; 31. second motor; 32. storage tube; 33. second power shaft; 34. flamethrower; 4. feeding mechanism; 41. second connecting seat; 42. first synchronous shaft; 43. synchronous belt; 44. second synchronous shaft; 45. feeding tube; 46. outer cover; 47. inner cover; 48. feeding roller; 49. feeding box; 410. telescopic tube; 411. ejector rod; 412. partition; 413. magnetic block; 5. rotational molding mechanism; 51. third motor; 52. rotational molding mold. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. 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.

[0020] Embodiment 1, as Figure 1-Figure 9 As shown, the present invention provides an energy-saving heating device for the production of roto-molded products, comprising a base 1, on which a roto-molding mechanism 5 for roto-molding materials is arranged, on which a closing mechanism 2 cooperating with the roto-molding mechanism 5 for roto-molding is arranged, on which a preheating mechanism 3 for preheating the roto-molding mechanism 5 is arranged, on which a feeding mechanism 4 for automatic feeding is arranged; The closing mechanism 2 includes a first driving mechanism and a material storage tank 25. The first driving mechanism drives the material storage tank 25 to enter and exit the rotational molding mechanism 5. The material storage tank 25 is provided with a sealing cap 26 at one end facing the rotational molding mechanism 5. The preheating mechanism 3 includes a second driving mechanism, a storage cylinder 32 disposed inside the storage tank 25, and a flamethrower 34 disposed inside the storage cylinder 32. The second driving mechanism drives the flamethrower 34 to move back and forth between the storage cylinder 32 and the rotational molding mechanism 5. The flamethrower 34 is used to be moved to the rotational molding mechanism 5 by the second driving mechanism to heat the rotational molding mechanism 5. The feeding mechanism 4 includes a third driving mechanism, a feeding device and a feeding box 49. The third driving mechanism drives the feeding device to input materials into the feeding box 49. The feeding box 49 is provided with a retractable cover at one end facing the rotational molding mechanism 5, and the retractable cover matches the preset through hole on the sealing cover 26. The cover and the sealing cover 26 are used to seal the rotational molding mechanism 5. The retractable cover can be sucked together with the inner end face of the rotational molding mechanism 5.

[0021] The present invention provides an energy-saving heating device for the production of rotationally molded products. On the one hand, the second driving mechanism can be used to accurately control the preheating area of ​​the rotationally molded mold, making the flamethrower more energy-efficient; on the other hand, the size of the space inside the rotationally molded mold can be flexibly adjusted according to the size of the rotationally molded product through the cooperation of the first driving mechanism of the closing mechanism, the cover and the retractable cover body.

[0022] The first driving mechanism includes a first motor 21 located on the base 1, and a first power shaft 22 is provided at the output end of the first motor 21. The first power shaft 22 is provided with the material storage tank 25 that moves along the first power shaft 22 when the first power shaft 22 rotates. The first motor 21 drives the first power shaft 22, and then the first power shaft 22 drives the material storage tank 25 to move, which can ensure a more accurate control process.

[0023] The second driving mechanism includes a second motor 31 mounted on the storage tank 25, a second power shaft 33 connected to the output end of the second motor 31; the storage tube 32 is located outside the second power shaft 33; the flamethrower 34 is in contact with the inner wall of the storage tube 32, and the flamethrower 34 moves along the second power shaft 33 when the second power shaft 33 rotates. The second power shaft 33 is controlled by the second motor 31, and then the second power shaft 33 passes through the storage tube 32 to control the flamethrower 34, which can ensure a more accurate control process.

[0024] The third driving mechanism includes a first synchronous shaft 42 and a second synchronous shaft 44, and the feeding device includes a feeding roller 48 and a feeding barrel 45; the first synchronous shaft 42 rubs against the base 1 and rotates when following the movement of the storage tank 25; the second synchronous shaft 44 is inserted into the storage tank 25, the upper end of the second synchronous shaft 44 rotates synchronously with the first synchronous shaft 42, and the lower end of the second synchronous shaft 44 is meshed and connected with the feeding roller 48; the feeding barrel 45 is arranged on the outer side of the feeding roller 48, and the feeding barrel 45 is provided with a feeding port. The third driving mechanism is associated with the first driving mechanism, so that the size adjustment of the rotational molding mold 52 and the feeding preparation can be carried out at the same time. After the size adjustment, the feeding preparation is completed, which saves time and improves production efficiency.

[0025] A push rod 411 is fixed at one end of the flamethrower 34, and the loading box 49 is installed on the push rod 411; the telescopic cover body includes a telescopic cylinder 410 and an inner cover 47 that are telescopic along the moving direction of the flamethrower 34, one end of the telescopic cylinder 410 is fixed inside the loading box 49, and the other end of the telescopic cylinder 410 is fixedly connected to the inner cover 47; one end of the loading box 49 is plugged with the feeding cylinder 45, and the telescopic cylinder 410 is in a stretched state in the initial state so that the inner cover 47 is pressed against the other end of the loading box 49; one circle of the inner cover 47 is connected to one circle of the through hole of the cover 26. The rotomolding mechanism 5 includes a third motor 51 and a rotomolding mold 52 connected to the output end of the third motor 51, and a magnetic block 413 is fixed inside the rotomolding mold 52, and the magnetic block 413 can be connected to the inner cover 47 by magnetic attraction, and the magnetic force of the magnetic attraction is greater than the pulling force of the telescopic cylinder 410 in the initial state. According to the moving distance of the cover 26 and the size of the rotomolded product, the part of the rotomolding mold 52 that needs to be preheated is automatically adjusted. On the one hand, the preheating area of ​​the rotomolding mold 52 can be accurately controlled to make the flamethrower 34 more energy-efficient; on the other hand, preheating the rotomolding mold 52 before rotomolding the rotomolded product can reduce the time required to heat the rotomolding mold 52 to a certain temperature during the rotomolding process of the rotomolding mold 52, and at the same time reduce the energy consumption of the external heating equipment of the rotomolding mold 52. The telescopic cylinder and magnetic adsorption can improve the convenience of discharging.

[0026] The first synchronous shaft 42 is provided with a friction wheel that rubs against the base 1. When the first synchronous shaft 42 moves with the storage tank 25, the friction wheel rotates by friction with the base 1, and then the friction wheel drives the first synchronous shaft 42 to rotate. The second motor 31 is fixedly installed on one side of the storage tank 25, and the output end of the second motor 31 extends to the inside of the storage cylinder 32 and is connected to the second power shaft 33. A synchronous belt 43 is installed at one end of the first synchronous shaft 42, and one end of the synchronous belt 43 is connected to the second synchronous shaft 44, and a stirring blade is provided on the second synchronous shaft 44; one end of the second synchronous shaft 44 and the feed roller 48 are both installed with bevel gears, and the two bevel gears are meshed with each other. An outer cover 46 is fixedly installed inside the storage tank 25, and one side of the outer cover 46 is connected to the feed cylinder 45, and one end of the second synchronous shaft 44 and the feed roller 48 are both extended to the inside of the outer cover 46. The stirring blade can rotate along with the second synchronous shaft 44 to stir the rotational molding raw material, thereby preventing the rotational molding raw material from piling up and causing poor feeding effect of the feed roller 48.

[0027] Embodiment 2, the present invention provides an energy-saving heating device for the production of roto-molded products, comprising a base 1, a roto-molding mechanism 5 is arranged on the base 1, a closing mechanism 2 for roto-molding in cooperation with the roto-molding mechanism 5 is arranged on the base 1, a preheating mechanism 3 for preheating the roto-molding mechanism 5 is arranged on the base 1, and a feeding mechanism 4 for automatic feeding is arranged on the preheating mechanism 3; The closing mechanism 2 includes a first motor 21 located on the base 1, and a first power shaft 22 is provided at the output end of the first motor 21. A storage tank 25 is provided on the first power shaft 22 to move along the first power shaft 22 when the first power shaft 22 rotates, and a cover 26 is installed at one end of the storage tank 25; the outer sides of the first power shaft 22 and the second power shaft 33 are both provided with threads, and a first connecting seat 24 is fixed to one side of the storage tank 25, and a first bearing seat 23 is installed at one end of the first connecting seat 24, and the first bearing seat 23 is connected to the first power shaft 22 through a ball nut pair; the rotational molding mechanism 5 includes a third motor 51, and a rotational molding mold 52 is installed at the output end of the third motor 51; See also Figures 1 to 4As shown, the first motor 21 is started, and the output end of the first motor 21 drives the first power shaft 22 to rotate. The outer side of the first power shaft 22 is provided with threads, and because the first bearing seat 23 is connected to the first power shaft 22 through a ball nut pair, when the first power shaft 22 rotates, the first bearing seat 23 moves along the first power shaft 22, and at the same time, the first bearing seat 23 drives the first connecting seat 24 to move, and the first connecting seat 24 drives the storage tank 25 to move, and the storage tank 25 drives the cover 26 to move, so that the cover 26 moves to the inside of the rotational molding mold 52, thereby closing the rotational molding mold 52, and then starting the first motor 21. There are three motors 51, and the output end of the third motor 51 drives the rotomolding mold 52 to rotate, so that the internal material of the rotomolding mold 52 can be rotomolded. The cover 26 is automatically inserted into the interior of the rotomolding mold 52 to close the rotomolding mold 52. On the one hand, the rotomolding mold 52 can be automatically closed for rotomolding, which saves the operator's closing and disassembly operations and improves work efficiency. On the other hand, the position of the cover 26 inside the rotomolding mold 52 can be adjusted according to actual conditions, and the size of the space inside the rotomolding mold 52 closed by the cover 26 can be flexibly adjusted according to the size of the rotomolded product, which has strong flexibility.

[0028] The preheating mechanism 3 includes a second motor 31 installed on the storage tank 25, a second power shaft 33 is provided at the output end of the second motor 31, a storage cylinder 32 located outside the second power shaft 33 is provided inside the storage tank 25, a flamethrower 34 is provided inside the storage cylinder 32, the flamethrower 34 has a flamethrower end in contact with the inner wall of the storage cylinder 32, and the flamethrower 34 moves along the second power shaft 33 when the second power shaft 33 rotates; the second motor 31 is fixedly installed on one side of the storage tank 25, the output end of the second motor 31 extends to the inside of the storage cylinder 32 and is connected to the second power shaft 33, a second bearing seat is installed on the flamethrower 34, and the second bearing seat is connected to the second power shaft 33 through a ball nut pair; the storage cylinder 32 can be made of heat-insulating material or non-heat-insulating material according to actual conditions; A push rod 411 is fixed to one end of the flamethrower 34, and a feeding box 49 is installed on the push rod 411. One side of the feeding box 49 is plugged into the feeding barrel 45, and one side of the feeding box 49 is abutted against an inner cover 47, and the circumference of the inner cover 47 is abutted against the circumference of the through hole set in the cover 26; a partition 412 is fixed to the inside of the rotational molding mold 52, and a magnetic suction block 413 is installed on the partition 412; in order to improve the efficiency of material entering the rotational molding mold 52 during feeding, the feeding box 49 is set to a truncated cone shape with a small left side and a large right side and open at both ends. The end plugged into the feeding barrel 45 is a small circular surface, and the side connected to the inner cover 47 is a large circular surface. When the inner cover 47 is separated from the large circular surface, the material can slide into the rotational molding mold 52 according to gravity.

[0029] See also Figures 4 to 7As shown, the rotomolding mold 52 needs to be preheated before the product is rotomolded. After adjusting the position of the cover 26, the second motor 31 is started, and the output end of the second motor 31 drives the second power shaft 33 to rotate. Since a second bearing seat is installed on the flamethrower 34, the second bearing seat and the second power shaft 33 are connected by a ball nut pair. Therefore, when the second power shaft 33 rotates, the flamethrower 34 drives the flamethrower 34 to move along the second power shaft 33 through the second bearing seat, and the flamethrower 34 drives the flamethrower end to gradually move out of the storage tube 32. At the same time, the flamethrower end of the flamethrower 34 drives the ejector rod 411 to move, and the ejector rod 411 drives the loading box 49 to move, and the loading box 49 drives the inner cover 47 to move. At this time, since the position of the cover 26 is adjusted and remains stationary inside the rotomolding mold 52, the loading box 49 and the inner cover 47 will be separated from the cover 26. Fig. 9 As shown, at this time, the flamethrower 34 continues to drive the loading box 49 to move, and the flamethrower gradually moves to the inside of the rotational molding mold 52 until the inner cover 47 contacts and is magnetically connected to the partition 412 inside the rotational molding mold 52; then the flamethrower 34 is started to spray fire to preheat the inside of the rotational molding mold 52; the automated preheating method can improve work efficiency while saving manpower operation; In addition, at this time, since only a part of the flamethrower end of the flamethrower 34 extends into the interior of the rotational molding mold 52, and the other part is always in the interior of the storage tube 32, and since the inner wall of the storage tube 32 is fitted with the flamethrower end, the part of the flamethrower end of the flamethrower 34 that is not fitted with the inner wall of the storage tube 32 can work normally, and the part of the flamethrower end of the flamethrower 34 that is fitted with the inner wall of the storage tube 32 cannot work; in addition, when adjusting the position of the cover 26, the storage tube 32 moves with the cover 26. After the cover 26 is adjusted, the storage tube 32 is adjusted. The flamethrower 34 extends into the flamethrower portion of the rotomolding mold 52, thereby automatically adjusting the portion of the rotomolding mold 52 that needs to be preheated according to the moving distance of the cover 26 and the size of the rotomolded product. On the one hand, the preheating area of ​​the rotomolding mold 52 can be accurately controlled, making the flamethrower 34 more energy-efficient; on the other hand, preheating the rotomolding mold 52 before rotomolding the rotomolding product can reduce the duration of external heating of the rotomolding mold 52 during the rotomolding process of the rotomolding mold 52, and at the same time reduce the energy consumption of the external heating equipment of the rotomolding mold 52; In addition, the rotational molding mold 52 can be directly brought to the working temperature through the flamethrower end of the flamethrower 34, and then the rotational molding can be carried out; the moving distance of the cover 26 and the size of the rotationally molded product can be used to automatically adjust the design of the part of the rotational molding mold 52 that needs to be heated, thereby reducing losses and achieving energy-saving effects.

[0030] The feeding mechanism 4 includes a first synchronous shaft 42 that moves with the storage tank 25. When the first synchronous shaft 42 moves, it rubs against the base 1 and then rotates. A second synchronous shaft 44 that rotates synchronously with the first synchronous shaft 42 rotates on the storage tank 25. One end of the second synchronous shaft 44 drives a feed roller 48 that rotates with the second synchronous shaft 44 when the second synchronous shaft 44 rotates. A feed barrel 45 is arranged on the outside of the feed roller 48. A magnetic block 413 is fixed inside the rotational molding mold 52, and the magnetic block 413 is magnetically connected to the inner cover 47. The first synchronous shaft A friction wheel rubbing against the base 1 is arranged on 42. When the first synchronous shaft 42 moves with the storage tank 25, the friction wheel rotates with the base 1, and then the friction wheel drives the first synchronous shaft 42 to rotate. A synchronous belt 43 is installed at one end of the first synchronous shaft 42. One end of the synchronous belt 43 is connected to the second synchronous shaft 44. A stirring blade is arranged on the second synchronous shaft 44. The stirring blade can rotate with the second synchronous shaft 44 to stir the rotational molding raw materials. On the one hand, the accumulation of the rotational molding raw materials is avoided, which makes the feeding effect of the feed roller 48 poor. The second synchronous shaft 44 and the feed roller 4 One end of each of the first and second second synchronous shafts 44 and the feed roller 48 is extended to the inside of the outer cover 46, and one end of each of the second synchronous shaft 44 and the feed roller 48 is installed with a bevel gear, and the two bevel gears are meshed with each other. A sealing plate is fixed inside one end of the storage tank 25, and one side of the loading box 49 is embedded in the sealing plate. When the flamethrower 34 moves along the second power shaft 33, the flamethrower 34 drives the loading box 49 to move through the push rod 411. A telescopic cylinder 410 with a telescopic function is arranged inside the loading box 49, and the telescopic cylinder 410 is a damping telescopic design. The storage tank 25 is fixedly installed with an outer cover. The cover 46, one side of the outer cover 46 is connected to the feed barrel 45, a feed port is provided on the feed barrel 45, and the feed barrel 45 is fixed inside the storage tank 25; in order to fix the push rod 411 and the telescopic cylinder 410 in the loading box 49, a connecting rod can be respectively set at the two ends of the loading box 49 to fix the push rod 411 and the telescopic cylinder 410, and at the same time, it does not affect the feeding from the feed barrel 45 and can also play a fixing role. Of course, there can be other fixing methods, such as setting a connecting rod in the middle of the loading box 49 or using a cross-shaped connecting rod.

[0031] In addition, in the process of adjusting the position of the cover 26 inside the rotational molding mold 52, the storage tank 25 drives the second connecting seat 41 to move, and the second connecting seat 41 drives the first synchronous shaft 42 to move on the base 1, and the friction wheel on the first synchronous shaft 42 rotates with the base 1 by friction, and then the friction wheel drives the first synchronous shaft 42 to rotate, and the first synchronous shaft 42 drives the second synchronous shaft 44 to rotate through the synchronous belt 43. The second synchronous shaft 44 and one end of the feed roller 48 are both equipped with bevel gears, and the two bevel gears are meshed with each other. Therefore, when the second synchronous shaft 44 rotates, the feed roller 48 is driven to rotate through the bevel gear, and the feed roller 48 rotates inside the feed barrel 45, and through the feed port opened on the feed barrel 45, the rotational molding raw materials inside the storage tank 25 can be transported to the inside of the loading box 49; when the position adjustment of the cover 26 is completed, the feed roller 48 stops rotating, so that a certain amount of rotational molding raw materials are stored inside the loading box 49; Then, as the flamethrower 34 extends into the rotational molding mold 52, the flamethrower 34 drives the loading box 49 to move into the rotational molding mold 52. After the inner cover 47 on one side of the loading box 49 contacts and is magnetically connected to the partition 412 inside the rotational molding mold 52, the flamethrower 34 preheats the inside of the rotational molding mold 52. After the flamethrower 34 completes the preheating treatment of the inside of the rotational molding mold 52, the second motor 31 reverses, and then the flamethrower end of the flamethrower 34 drives the loading box 49 to move in the direction through the ejector rod 411. At this time, the inner cover 47 contacts and is magnetically connected to the partition 412 inside the rotational molding mold 52. Therefore, when the loading box 49 starts to move in the opposite direction, the inner cover 47 continues to be magnetically attracted to the partition 412. Since the magnetic attraction force between the inner cover 47 and the partition 412 is greater than the telescopic force of the telescopic cylinder 410 itself The damping force is increased, so a gap is generated between the inner cover 47 and the loading box 49 through the telescopic cylinder 410. During the continuous reverse movement of the loading box 49, after the gap between the inner cover 47 and the loading box 49 reaches the maximum value, the loading box 49 pulls the inner cover 47 through the telescopic cylinder 410, so that the magnetic attraction of the partition 412 of the inner cover 47 cancels the magnetic attraction and moves in the direction of the loading box 49. At this time, the rotational molding material inside the loading box 49 will be sprinkled into the interior of the rotational molding mold 52 through the gap between the inner cover 47 and the loading box 49, thereby achieving the effect of automatic feeding and automatic loading, saving manpower and improving work efficiency; at the same time, since the time for the feed roller 48 to rotate and feed is synchronized with the movement time of the cover 26, the required amount of rotational molding material can be automatically controlled according to the size of the rotational molding product, thereby further improving the quality of rotational molding; In addition, when the loading box 49 moves in the reverse direction to the cover 26, the inner cover 47 is pressed manually to restore the inner cover 47 to the closed state with the loading box 49. At the same time, the inner cover 47 and the cover 26 are inlaid, and the two cooperate to close the rotational molding mold 52 and cooperate with the rotational molding of the rotational molding mold 52.

[0032] This method can flexibly adjust the moving distance of the cover 26 according to the size of the rotomolded product to control the preheating area inside the rotomolding mold 52, thereby achieving energy saving effects; at the same time, according to the moving distance of the cover 26, the amount of rotomolding raw materials is automatically controlled to further improve the quality of the rotomolded product; the method has high automation and extremely high efficiency.

[0033] Working principle: start the first motor 21, the output end of the first motor 21 drives the first power shaft 22 to rotate, the outer side of the first power shaft 22 is provided with threads, and since the first bearing seat 23 is connected to the first power shaft 22 by a ball nut pair, when the first power shaft 22 rotates, the first bearing seat 23 moves along the first power shaft 22, and at the same time, the first bearing seat 23 drives the first connecting seat 24 to move, the first connecting seat 24 drives the storage tank 25 to move, and the storage tank 25 drives the cover 26 to move, so that the cover 26 moves to the inside of the rotational molding mold 52, thereby closing the rotational molding mold 52, and then start the third motor 51, the output end of the third motor 51 drives the rotational molding mold 52 to rotate, thereby the internal material of the rotational molding mold 52 can be rotationally molded.

[0034] Preheating: After adjusting the position of the cover 26, start the second motor 31, and the output end of the second motor 31 drives the second power shaft 33 to rotate. Since the flamethrower 34 is equipped with a second bearing seat, the second bearing seat and the second power shaft 33 are connected by a ball nut pair. Therefore, when the second power shaft 33 rotates, the flamethrower 34 drives the flamethrower 34 to move along the second power shaft 33 through the second bearing seat, and the flamethrower 34 drives the flamethrower end to gradually move out of the storage tube 32. At the same time, the flamethrower end of the flamethrower 34 drives the ejector rod 411 to move, and the ejector rod 411 drives the loading box 49 to move, and the loading box 49 drives the inner cover 47 to move. At this time, since the position of the cover 26 is adjusted and remains stationary inside the rotational mold 52, the loading box 49 and the inner cover 47 will be separated from the cover 26. Fig. 9 As shown, at this time, the flamethrower 34 continues to drive the loading box 49 to move, and the flamethrower end gradually moves to the inside of the rotational molding mold 52 until the inner cover 47 contacts the partition 412 inside the rotational molding mold 52 and is magnetically connected; then the flamethrower 34 is started to spray fire to preheat the inside of the rotational molding mold 52.

[0035] Loading: In the process of adjusting the position of the cover 26 inside the rotational molding mold 52, the storage tank 25 drives the second connecting seat 41 to move, and the second connecting seat 41 drives the first synchronous shaft 42 to move on the base 1. The friction wheel on the first synchronous shaft 42 rotates with the base 1 by friction, and then the friction wheel drives the first synchronous shaft 42 to rotate, and the first synchronous shaft 42 drives the second synchronous shaft 44 to rotate through the synchronous belt 43. The second synchronous shaft 44 and one end of the feed roller 48 are both equipped with bevel gears, and the two bevel gears are meshed with each other. Therefore, when the second synchronous shaft 44 rotates, the feed roller 48 is driven to rotate through the bevel gear. The feed roller 48 rotates inside the feed barrel 45 and can transport the rotational molding raw materials inside the storage tank 25 to the inside of the loading box 49 through the feed port opened on the feed barrel 45; when the position adjustment of the cover 26 is completed, the feed roller 48 stops rotating, so that a certain amount of rotational molding raw materials are stored inside the loading box 49; Then, as the flamethrower 34 extends into the rotational molding mold 52, the flamethrower 34 drives the loading box 49 to move into the rotational molding mold 52. After the inner cover 47 on one side of the loading box 49 contacts and is magnetically connected to the partition 412 inside the rotational molding mold 52, the flamethrower 34 preheats the inside of the rotational molding mold 52. After the flamethrower 34 completes the preheating treatment of the inside of the rotational molding mold 52, the second motor 31 reverses, and then the flamethrower end of the flamethrower 34 drives the loading box 49 to move in the direction through the ejector rod 411. Since the inner cover 47 contacts and is magnetically connected to the partition 412 inside the rotational molding mold 52 at this time, when the loading box 49 starts to move in the opposite direction, the inner cover 47 continues to be magnetically attracted to the partition 412, so the inner cover 47 is connected to the loading box 49 through the telescopic cylinder 410. In the process of continuous reverse movement of the feeding box 49, after the gap between the inner cover 47 and the feeding box 49 reaches the maximum value, the feeding box 49 pulls the inner cover 47 through the telescopic cylinder 410, so that the magnetic attraction of the partition 412 of the inner cover 47 cancels the magnetic attraction and moves in the direction of the feeding box 49. At this time, the rotationally molded raw materials inside the feeding box 49 will be sprinkled into the interior of the rotationally molding mold 52 through the gap between the inner cover 47 and the feeding box 49, so as to achieve the effect of automatic feeding and automatic loading. In addition, when the feeding box 49 moves in the reverse direction to the sealing cover 26, the inner cover 47 is pressed by manpower to restore the inner cover 47 to the closed state with the feeding box 49. At the same time, the design of the inner cover 47 and the sealing cover 26 being embedded can be used to close the rotationally molding mold 52 and cooperate with the rotational molding of the rotational molding mold 52.

[0036] 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. An energy-saving heating device for the production of rotational molded products, characterized in that: The invention comprises a base (1), the base (1) being provided with a roto-molding mechanism (5) for roto-molding a material, the base (1) being provided with a closing mechanism (2) for cooperating with the roto-molding mechanism (5) for roto-molding, the base (1) being provided with a preheating mechanism (3) for preheating the roto-molding mechanism (5), and the preheating mechanism (3) being provided with a feeding mechanism (4) for automatically feeding the material; The sealing mechanism (2) comprises a first driving mechanism and a material storage tank (25), wherein the first driving mechanism drives the material storage tank (25) to enter and exit the rotational molding mechanism (5), and a sealing cover (26) is provided at one end of the material storage tank (25) facing the rotational molding mechanism (5); The preheating mechanism (3) comprises a second driving mechanism, a storage cylinder (32) arranged inside the material storage tank (25), and a flamethrower (34) arranged inside the storage cylinder (32), the second driving mechanism driving the flamethrower (34) to move back and forth between the storage cylinder (32) and the rotational molding mechanism (5), and the flamethrower (34) is used to be moved by the second driving mechanism into the rotational molding mechanism (5) to heat the rotational molding mechanism (5); The feeding mechanism (4) comprises a third driving mechanism, a feeding device and a feeding box (49), wherein the third driving mechanism drives the feeding device to input materials into the feeding box (49); a retractable cover is provided at one end of the feeding box (49) facing the rotational molding mechanism (5), and the retractable cover matches a through hole preset on the sealing cover (26), the cover cooperates with the sealing cover (26) to seal the rotational molding mechanism (5), and the retractable cover can be sucked together with the inner end surface of the rotational molding mechanism (5).

2. The energy-saving heating equipment for rotomolding product production according to claim 1 is characterized in that: The first driving mechanism comprises a first motor (21) located on the base (1); a first power shaft (22) is provided at an output end of the first motor (21); and the first power shaft (22) is provided with the material storage tank (25) which moves along the first power shaft (22) when the first power shaft (22) rotates.

3. The energy-saving heating equipment for rotomolding product production according to claim 1 is characterized in that: The second driving mechanism comprises a second motor (31) mounted on the material storage tank (25), and a second power shaft (33) connected to an output end of the second motor (31); The storage cylinder (32) is located outside the second power shaft (33); The flame-spraying end of the flamethrower (34) is in contact with the inner wall of the storage tube (32), and when the second power shaft (33) rotates, the flamethrower (34) moves along the second power shaft (33).

4. The energy-saving heating equipment for rotomolding product production according to claim 1 is characterized in that: The third driving mechanism comprises a first synchronous shaft (42) and a second synchronous shaft (44), and the feeding device comprises a feeding roller (48) and a feeding cylinder (45); When the first synchronization shaft (42) moves with the material storage tank (25), friction occurs with the base (1) and the base (1) causes the base to rotate; The second synchronous shaft (44) is inserted into the material storage tank (25), the upper end of the second synchronous shaft (44) rotates synchronously with the first synchronous shaft (42), and the lower end of the second synchronous shaft (44) is meshedly connected with the feed roller (48); The feed cylinder (45) is arranged outside the feed roller (48), and the feed cylinder (45) is provided with a feed opening.

5. The energy-saving heating equipment for rotomolding product production according to claim 1 is characterized in that: A push rod (411) is fixed to one end of the flamethrower (34), and the loading box (49) is mounted on the push rod (411); The telescopic cover body comprises a telescopic cylinder (410) that is telescopic along the moving direction of the flamethrower (34) and an inner cover (47); one end of the telescopic cylinder (410) is fixed inside the loading box (49), and the other end of the telescopic cylinder (410) is fixedly connected to the inner cover (47); One end of the loading box (49) is plugged into the feeding cylinder (45), and the telescopic cylinder (410) is in a stretched state in an initial state so that the inner cover (47) is pressed tightly against the other end of the loading box (49); A circle of the inner cover (47) is connected to a circle of through holes of the sealing cover (26).

6. The energy-saving heating device for rotomolding product production according to claim 5, characterized in that: The roto-molding mechanism (5) comprises a third motor (51) and a roto-molding mold (52) connected to the output end of the third motor (51); a magnetic block (413) is fixed inside the roto-molding mold (52); the magnetic block (413) can be connected to the inner cover (47) by magnetic attraction, and the magnetic force of the magnetic attraction is greater than the pulling force of the telescopic cylinder (410) in the initial state.

7. The energy-saving heating device for rotomolding product production according to claim 2, characterized in that: The first synchronous shaft (42) is provided with a friction wheel that rubs against the base (1); when the first synchronous shaft (42) moves following the material storage tank (25), the friction wheel rotates due to friction with the base (1), and the friction wheel drives the first synchronous shaft (42) to rotate.

8. The energy-saving heating device for rotomolding product production according to claim 3 is characterized in that: The second motor (31) is fixedly mounted on one side of the material storage tank (25), and an output end of the second motor (31) extends to the interior of the storage cylinder (32) and is connected to the second power shaft (33).

9. The energy-saving heating device for rotomolding product production according to claim 4, characterized in that: A synchronous belt (43) is installed at one end of the first synchronous shaft (42), one end of the synchronous belt (43) is connected to a second synchronous shaft (44), and a stirring blade is arranged on the second synchronous shaft (44); One end of the second synchronous shaft (44) and the feed roller (48) are both equipped with a bevel gear, and the two bevel gears are meshed with each other.

10. An energy-saving heating device for the production of rotational molded products according to claim 9, characterized in that: An outer cover (46) is fixedly installed inside the storage tank (25), one side of the outer cover (46) is connected to the feed cylinder (45), and one end of the second synchronous shaft (44) and the feed roller (48) both extend into the interior of the outer cover (46).

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