A hot melting device for plastic pipe production
By combining internal and external double-layer heating and stirring mechanisms, the problems of uneven material feeding and temperature in plastic pipe production are solved, achieving uniform heating and precise feeding of materials, and improving the production quality of plastic pipes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINAN FIRST CONSTR GRP GREEN BUILDING IND
- Filing Date
- 2025-07-16
- Publication Date
- 2026-06-19
AI Technical Summary
Existing hot-melt equipment for plastic pipe production lacks a batching function, making it difficult to accurately control the weight of materials fed in, resulting in uneven heating and affecting the hot-melt effect of raw materials.
It adopts a double-layer heating structure, combined with a stirring mechanism and a weighing mechanism, to ensure uniform heating and accurate feeding of materials, and prevents gas leakage through a sealing mechanism.
It achieves uniform heating and precise feeding of materials, improves the melting rate of materials, and ensures the quality stability of plastic pipes.
Smart Images
Figure CN224374536U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of plastic pipe production, and in particular to a hot melt device for plastic pipe production. Background Technology
[0002] The molding process of plastic profiles generally includes the following steps: the plastic raw material is plasticized into a melt in the extruder barrel, the melt passes through the extruder die head to form a melt preform of a certain shape, the melt preform enters the sizing mold to be cooled and basically shaped, and then is continuously cooled by the cooling water tank to form the final shape.
[0003] Existing hot-melt devices for plastic pipe production, such as the novel raw material melting device for plastic pipe production disclosed in utility model patent application number 202323414649.1, mainly include a fixed plate, a melting shell connected through the upper end of the fixed plate, a hopper connected to the lower end of the melting shell, a discharge pipe connected to the lower end of the hopper, a discharge valve installed on the outer wall of the discharge pipe, and a feed inlet connected to the upper end of the melting shell. In use, the granular raw material to be melted is added into the melting shell through the feed inlet. Then, the heating plate is connected to the power supply, and the heating plate heats the granular raw material in the melting shell. The motor is turned on, and the motor drives the stirring shaft to rotate, and multiple stirring blades stir the granular raw material.
[0004] However, most existing hot melt equipment does not have a batching function, making it difficult to accurately control the weight of the material being fed, which affects the quality of the plastic pipes. Moreover, the uneven heating temperature inside the equipment can easily affect the hot melt effect of the raw materials. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides a hot melt device for the production of plastic pipes that not only makes the material more evenly heated and improves the melting rate by heating with inner and outer double layers, but also facilitates the weighing of the fed material and ensures the accuracy of the material feeding weight.
[0006] This utility model discloses a hot-melt device for the production of plastic pipes, including a storage mechanism; it also includes a stirring mechanism, a driving mechanism, a heating mechanism, a weighing mechanism, and a sealing mechanism. The stirring mechanism is installed on the storage mechanism to stir the material, the driving mechanism is installed on the stirring mechanism to drive the stirring mechanism to rotate, the heating mechanism is installed on the storage mechanism to heat the material, the weighing mechanism is installed on the driving mechanism to weigh the material, and the sealing mechanism is installed on the weighing mechanism to prevent gas leakage. The operator feeds the material into the weighing mechanism for weighing and measurement, the weighing mechanism feeds the material into the storage mechanism for heating, and then closes the sealing mechanism to prevent gas leakage during the heating process. The heating mechanism works with the storage mechanism to heat the material, while the driving mechanism drives the stirring mechanism to rotate and stir the material, making the material heated more evenly.
[0007] Preferably, the material storage mechanism includes a heating cylinder, a first control panel, a connecting pipe, and a discharge valve. The heating cylinder is installed on the working surface and has a cavity inside. The first control panel is installed on the heating cylinder. The top end of the connecting pipe is connected to the bottom end of the heating cylinder. The discharge valve is installed on the connecting pipe. After the material is fed into the cavity of the heating cylinder, the heating cylinder is controlled by the first control panel to heat the material. After the material is heated to a molten state, the discharge valve is opened, and the material is transported to the extrusion device through the connecting pipe.
[0008] Preferably, the stirring mechanism includes a sleeve, a first gear, a connecting plate, two sets of connecting shafts, two sets of threaded blades, and a scraper. The sleeve is rotatably mounted on the heating cylinder, the first gear is mounted on the sleeve, the top end of the connecting plate is connected to the bottom end of the sleeve, both sets of connecting shafts are mounted on the connecting plate, the two sets of threaded blades are respectively mounted on the two sets of connecting shafts, and the top end of the scraper is connected to the bottom end of the two sets of connecting shafts. The drive mechanism meshes with the first gear, the first gear drives the sleeve and the connecting plate to rotate, and the connecting plate drives the two sets of connecting shafts and the two sets of threaded blades to rotate, thus stirring the material. At the same time, the scraper follows the rotation to stir the material at the bottom and scrapes off the material adhering to the inner wall of the heating cylinder.
[0009] Preferably, the drive mechanism includes a servo motor, a dual-output shaft reducer, a first transmission shaft, and a second gear. The bottom end of the servo motor is connected to the top end of the heating cylinder, the output end of the servo motor is connected to the input end of the dual-output shaft reducer, the output end of the dual-output shaft reducer is connected to the input end of the first transmission shaft, and the output end of the first transmission shaft is connected to the input end of the second gear. The second gear and the first gear mesh and transmit power. When the servo motor is started, the servo motor drives the first transmission shaft to rotate through the dual-output shaft reducer. The first transmission shaft drives the second gear to rotate, and the second gear drives the first gear to rotate.
[0010] Preferably, the heating mechanism includes a support, a second control panel, and a heating rod. The bottom end of the support is connected to the top end of the heating cylinder. The second control panel is mounted on the support, and the heating rod is mounted on the support and extends into the cavity of the heating cylinder. The operator starts the heating rod to heat the material through the second control panel. The heating rod works in conjunction with the heating cylinder to provide double heating for the material, ensuring uniform heating and increasing the melting rate of the material.
[0011] Preferably, the weighing mechanism includes a weighing box, a feeding hopper, a second drive shaft, a weighing plate, and a weight sensor. The bottom end of the weighing box is connected to the top end of the heating cylinder, and the bottom end of the weighing box communicates with the interior of the top end of the heating cylinder. The bottom end of the feeding hopper communicates with the interior of the top end of the weighing box. The second drive shaft is rotatably mounted on the weighing box, and the output end of the dual-output shaft reducer is connected to the input end of the second drive shaft. The weighing plate is mounted on the second drive shaft, and the weight sensor is mounted on the weighing plate. The operator feeds the material into the weighing box through the feeding hopper. The material falls onto the weighing plate, and the weight sensor weighs the material. Once the required weight is reached, the dual-output shaft reducer drives the second drive shaft to rotate. The second drive shaft drives the weighing plate to flip and feed the material into the cavity of the heating cylinder.
[0012] Preferably, the sealing mechanism includes a limiting frame, a sliding cover, and a handle. The limiting frame is installed on the weighing box, the sliding cover is slidably installed on the limiting frame, and the handle is installed on the sliding cover. After the material is fed, the operator operates the handle to push the sliding cover, and the limiting frame cooperates with the sliding cover to seal the feeding port and prevent gas from escaping during the heating process.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the staff puts the material into the weighing mechanism to weigh and measure the material, the weighing mechanism puts the material into the storage mechanism for heating, and then closes the sealing mechanism to prevent the gas generated during the heating process from overflowing. The heating mechanism works with the storage mechanism to heat the material, and at the same time the driving mechanism drives the stirring mechanism to rotate to stir the material, so that the material is heated more evenly. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the isometric structure of this utility model;
[0015] Figure 2 This is a front view structural diagram of the material storage mechanism of this utility model;
[0016] Figure 3 This is a cross-sectional isometric structural diagram of the stirring mechanism and heating mechanism of this utility model;
[0017] Figure 4 This is a partially enlarged cross-sectional isometric structural diagram of the drive mechanism and weighing mechanism of this utility model;
[0018] Figure 5This is a partially enlarged cross-sectional isometric structural diagram of the weighing mechanism and sealing mechanism of this utility model.
[0019] The attached diagram is labeled as follows: 01, storage mechanism; 11, heating cylinder; 12, first control panel; 13, connecting pipe; 14, discharge valve; 02, stirring mechanism; 21, sleeve; 22, first gear; 23, connecting plate; 24, connecting shaft; 25, spiral blade; 26, scraper; 03, drive mechanism; 31, servo motor; 32, dual output shaft reducer; 33, first transmission shaft; 34, second gear; 04, heating mechanism; 41, bracket; 42, second control panel; 43, heating rod; 05, weighing mechanism; 51, weighing box; 52, feeding hopper; 53, second transmission shaft; 54, weighing plate; 55, weight sensor; 06, sealing mechanism; 61, limit frame; 62, sliding cover; 63, handle. Detailed Implementation
[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example 1
[0021] This utility model discloses a hot-melt device for the production of plastic pipes, including a material storage mechanism 01; it also includes a stirring mechanism 02, a driving mechanism 03, a heating mechanism 04, a weighing mechanism 05, and a sealing mechanism 06. The stirring mechanism 02 is installed on the material storage mechanism 01 and stirs the material; the driving mechanism 03 is installed on the stirring mechanism 02 and drives the stirring mechanism 02 to rotate; the heating mechanism 04 is installed on the material storage mechanism 01 and heats the material; the weighing mechanism 05 is installed on the driving mechanism 03 and weighs the material; and the sealing mechanism 06 is installed on the material storage mechanism 01. The weighing mechanism 05 is mounted on the weighing mechanism 05 to prevent gas leakage; the storage mechanism 01 includes a heating cylinder 11, a first control panel 12, a connecting pipe 13, and a discharge valve 14. The heating cylinder 11 is mounted on the working surface and has an internal cavity. The first control panel 12 is mounted on the heating cylinder 11. The top end of the connecting pipe 13 is connected to the bottom end of the heating cylinder 11. The discharge valve 14 is mounted on the connecting pipe 13; the stirring mechanism 02 includes a sleeve 21, a first gear 22, a connecting plate 23, two sets of connecting shafts 24, two sets of threaded blades 25, and a scraper 26. Sleeve 21 is rotatably mounted on heating cylinder 11. First gear 22 is mounted on sleeve 21. Top end of connecting plate 23 is connected to bottom end of sleeve 21. Two sets of connecting shafts 24 are mounted on connecting plate 23. Two sets of threaded blades 25 are respectively mounted on two sets of connecting shafts 24. Top end of scraper 26 is connected to bottom end of two sets of connecting shafts 24. Drive mechanism 03 includes servo motor 31, dual output shaft reducer 32, first transmission shaft 33, and second gear 34. Bottom end of servo motor 31 is connected to top end of heating cylinder 11. The output end is connected to the input end of the dual output shaft reducer 32, the output end of the dual output shaft reducer 32 is connected to the input end of the first transmission shaft 33, the output end of the first transmission shaft 33 is connected to the input end of the second gear 34, and the second gear 34 and the first gear 22 mesh and drive each other; the heating mechanism 04 includes a bracket 41, a second control panel 42 and a heating rod 43, the bottom end of the bracket 41 is connected to the top end of the heating cylinder 11, the second control panel 42 is mounted on the bracket 41, and the heating rod 43 is mounted on the bracket 41 and extends into the cavity of the heating cylinder 11;During operation, the material is first fed into the cavity of the heating cylinder 11. Then, the servo motor 31 is started. The servo motor 31 drives the first transmission shaft 33 to rotate via the dual-output shaft reducer 32. The first transmission shaft 33 drives the second gear 34 to rotate, which in turn drives the first gear 22. The first gear 22 drives the sleeve 21 and connecting plate 23 to rotate. The connecting plate 23 drives two sets of connecting shafts 24 and two sets of threaded blades 25 to rotate, thus stirring the material. Simultaneously, the scraper 26 follows the rotation, scraping the material at the bottom and removing material adhering to the inner wall of the heating cylinder 11. The operator controls the heating cylinder 11 to heat the material via the first control panel 12 and activates the heating rod 43 via the second control panel 42. The heating rod 43, in conjunction with the heating cylinder 11, provides dual heating to ensure uniform heating and increase the melting rate. After the material reaches a molten state, the discharge valve 14 is opened, and the material is conveyed to the extrusion device through the connecting pipe 13. Example 2
[0022] like Figures 1 to 5As shown, this utility model discloses a hot-melt device for plastic pipe production, based on Embodiment 1. The weighing mechanism 05 includes a weighing box 51, a feeding hopper 52, a second drive shaft 53, a weighing plate 54, and a weight sensor 55. The bottom end of the weighing box 51 is connected to the top end of the heating cylinder 11, and the bottom end of the weighing box 51 communicates with the interior of the top end of the heating cylinder 11. The bottom end of the feeding hopper 52 communicates with the interior of the top end of the weighing box 51. The second drive shaft 53 is rotatably mounted on the weighing box 51, and the output end of the dual-output shaft reducer 32 is connected to the input end of the second drive shaft 53. Weighing plate 54 is mounted on the second drive shaft 53, and weight sensor 55 is mounted on weighing plate 54; sealing mechanism 06 includes a limit frame 61, a sliding cover 62, and a handle 63. Limit frame 61 is mounted on weighing box 51, sliding cover 62 is slidably mounted on limit frame 61, and handle 63 is mounted on sliding cover 62; during operation, firstly, the worker feeds material into weighing box 51 through hopper 52, the material falls onto weighing plate 54, and weight sensor 55 weighs the material. After reaching the required weight, dual-output shaft reducer 32 drives the second drive shaft 53 to rotate. The second drive shaft 53 drives the weighing plate 54 to flip, feeding the material into the cavity of the heating cylinder 11. After the material is fed, the operator operates the handle 63 to push the sliding cover 62. The limit frame 61 cooperates with the sliding cover 62 to block the feeding port, preventing gas from escaping during heating. The servo motor 31 is started. The servo motor 31 drives the first drive shaft 33 to rotate through the dual output shaft reducer 32. The first drive shaft 33 drives the second gear 34 to rotate. The second gear 34 drives the first gear 22 to rotate. The first gear 22 drives the sleeve 21 and the connecting plate 23 to rotate. The connecting plate 23 drives the two sets of connecting shafts. 24 and two sets of threaded blades 25 rotate to stir the material. At the same time, scraper 26 rotates to scrape the material at the bottom and scrape off the material adhering to the inner wall of heating cylinder 11. The operator controls heating cylinder 11 to heat the material through first control panel 12 and starts heating rod 43 to heat the material through second control panel 42. Heating rod 43 works with heating cylinder 11 to provide double heating of the material to ensure uniform heating and increase the melting rate of the material. After the material is heated to the molten state, discharge valve 14 is opened and the material is transported to extrusion device through connecting pipe 13.
[0023] The servo motor 31 and the dual-output shaft reducer 32 of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.
[0024] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A hot-melt device for producing plastic pipes, comprising a material storage mechanism (01); characterized in that, It also includes a stirring mechanism (02), a driving mechanism (03), a heating mechanism (04), a weighing mechanism (05), and a sealing mechanism (06). The stirring mechanism (02) is installed on the storage mechanism (01) and stirs the material. The driving mechanism (03) is installed on the stirring mechanism (02) and drives the stirring mechanism (02) to rotate. The heating mechanism (04) is installed on the storage mechanism (01) and heats the material. The weighing mechanism (05) is installed on the driving mechanism (03) and weighs the material. The sealing mechanism (06) is installed on the weighing mechanism (05) and prevents gas from overflowing.
2. The hot melt apparatus for producing plastic pipes as described in claim 1, characterized in that, The material storage mechanism (01) includes a heating cylinder (11), a first control panel (12), a connecting pipe (13), and a discharge valve (14). The heating cylinder (11) is installed on the working surface and has a cavity inside. The first control panel (12) is installed on the heating cylinder (11). The top end of the connecting pipe (13) is connected to the bottom end of the heating cylinder (11). The discharge valve (14) is installed on the connecting pipe (13).
3. A hot melt apparatus for producing plastic pipes as described in claim 2, characterized in that, The stirring mechanism (02) includes a sleeve (21), a first gear (22), a connecting plate (23), two sets of connecting shafts (24), two sets of threaded blades (25), and a scraper (26). The sleeve (21) is rotatably mounted on the heating cylinder (11). The first gear (22) is mounted on the sleeve (21). The top end of the connecting plate (23) is connected to the bottom end of the sleeve (21). Both sets of connecting shafts (24) are mounted on the connecting plate (23). The two sets of threaded blades (25) are respectively mounted on the two sets of connecting shafts (24). The top end of the scraper (26) is connected to the bottom end of the two sets of connecting shafts (24).
4. A hot melt apparatus for producing plastic pipes as described in claim 3, characterized in that, The drive mechanism (03) includes a servo motor (31), a dual-output shaft reducer (32), a first transmission shaft (33), and a second gear (34). The bottom end of the servo motor (31) is connected to the top end of the heating cylinder (11). The output end of the servo motor (31) is connected to the input end of the dual-output shaft reducer (32). The output end of the dual-output shaft reducer (32) is connected to the input end of the first transmission shaft (33). The output end of the first transmission shaft (33) is connected to the input end of the second gear (34). The second gear (34) and the first gear (22) mesh and transmit power.
5. A hot melt apparatus for producing plastic pipes as described in claim 2, characterized in that, The heating mechanism (04) includes a bracket (41), a second control panel (42) and a heating rod (43). The bottom end of the bracket (41) is connected to the top end of the heating cylinder (11). The second control panel (42) is mounted on the bracket (41). The heating rod (43) is mounted on the bracket (41) and extends into the cavity of the heating cylinder (11).
6. A hot melt apparatus for producing plastic pipes as described in claim 4, characterized in that, The weighing mechanism (05) includes a weighing box (51), a feeding hopper (52), a second drive shaft (53), a weighing plate (54), and a weight sensor (55). The bottom end of the weighing box (51) is connected to the top end of the heating cylinder (11), and the bottom end of the weighing box (51) is connected to the inside of the top end of the heating cylinder (11). The bottom end of the feeding hopper (52) is connected to the inside of the top end of the weighing box (51). The second drive shaft (53) is rotatably mounted on the weighing box (51), and the output end of the dual output shaft reducer (32) is connected to the input end of the second drive shaft (53). The weighing plate (54) is mounted on the second drive shaft (53), and the weight sensor (55) is mounted on the weighing plate (54).
7. A hot melt apparatus for producing plastic pipes as described in claim 6, characterized in that, The sealing mechanism (06) includes a limiting frame (61), a sliding cover (62) and a handle (63). The limiting frame (61) is mounted on the weighing box (51), the sliding cover (62) is slidably mounted on the limiting frame (61), and the handle (63) is mounted on the sliding cover (62).