Preheating multi-path automatic feeding system based on injection molding and control method of preheating multi-path automatic feeding system
By designing a negative pressure unit and heating straight pipe in a multi-channel automatic loading system, the raw materials inside the barrel are preheated with hot air, which solves the problems of temperature rise and heat waste caused by the hot air discharged from the vacuum loading machine, and efficient heating of raw materials and the reuse of hot air are achieved.
Patent Information
- Application Number
- CN202411904813.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-03-14
AI Technical Summary
During the continuous loading process of injection molding, the hot air discharged from the vacuum loader is directly discharged near the station, resulting in temperature rise and heat waste near the station.
A system including a negative pressure unit, a feeding mechanism, a heating straight pipe, a gas pipe and a feeding barrel is designed. The raw materials are heated during the loading process by heating the straight pipe, and the raw materials inside the barrel are preheated by using the hot air discharged from the negative pressure unit to reduce hot air emissions.
It effectively prevents the ambient temperature near the station caused by the hot air discharged from the negative pressure unit, and at the same time, the hot air is reused, improving the heating efficiency of the raw materials.
Smart Images
Figure CN119610547A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of injection molding, in particular to a preheatable multi-channel automatic feeding system based on injection molding and a control method thereof. Background Art
[0002] The preheatable multi-channel automatic feeding system based on injection molding is a kind of equipment specially designed to improve the efficiency and quality of plastic processing; The system integrates raw material supply, weighing measurement, conveying and mixing, automatic control and network interface modules to realize automatic supply and precise control of various raw materials. It can preheat the raw materials to ensure the fluidity and uniformity of the materials during the injection molding process, thereby improving the molding efficiency. The system has a friendly operation interface and supports multi-platform interaction, which is convenient for users to monitor and adjust production parameters in real time. In addition, the automatic feeding system is also highly flexible and scalable, and can adapt to production lines of different sizes and needs. It is an indispensable technical solution in modern manufacturing. The preheatable multi-channel automatic feeding system based on injection molding generally realizes feeding through a vacuum loader. During the continuous feeding process, the vacuum loader performs negative pressure extraction on the internal silo. During the negative pressure extraction process, the exhausted air is mostly hot air. This part of hot air is directly discharged near the workstation, which will cause the temperature near the workstation to rise and cause heat waste. Therefore, in order to solve the above problems, a preheatable multi-channel automatic feeding system based on injection molding and a control method thereof are proposed. Summary of the invention
[0003] The purpose of the present invention is to provide a preheatable multi-channel automatic feeding system based on injection molding and a control method thereof, so as to solve the problem that the preheatable multi-channel automatic feeding system based on injection molding generally realizes feeding through a vacuum loader. During the continuous feeding process, the vacuum loader performs negative pressure extraction on the internal silo. During the negative pressure extraction process, the exhausted air is mostly hot air. This part of the hot air is directly discharged near the workstation, which will cause the temperature near the workstation to rise and cause heat waste.
[0004] To achieve the above object, the present invention provides the following technical solutions: The preheatable multi-channel automatic feeding system based on injection molding and its control method include a negative pressure unit, the lower end of the negative pressure unit is fixedly connected to a feeding box with an automatic unloading valve installed at the bottom, the bottom of the feeding box is fixedly connected to a supporting leg, a feeding mechanism is installed in the middle of the feeding box, one side of the negative pressure unit is fixedly connected to a negative pressure exhaust pipe for exhaust, the other end of the negative pressure exhaust pipe is fixedly connected to an annular pipe, the outside of the annular pipe is fixedly connected to an air pipe, the other end of the air pipe is fixedly connected to a feeding barrel, the upper end of the feeding barrel is provided with a barrel upper cover, the middle of the barrel upper cover is provided with a feeding pipe, and the upper The other end of the material pipe is fixedly connected to a heating straight pipe, and an electric air valve is installed on the upper end of the air pipe; the loading box includes a column shell, a hollow section is provided in the middle of the column shell, a connecting rod is provided in the hollow section, and an annular groove is provided on the outer side of the column shell; the feeding mechanism includes a sealing ring plate, a positioning block is fixedly connected to the upper end of the sealing ring plate, a locking bolt is spirally connected inside the positioning block, a connecting pipe is fixedly connected in the middle of the sealing ring plate, a material valve is installed on one end of the connecting pipe exposed from the sealing ring plate, a connecting piece and a sealing ring are fixedly connected inside the sealing ring plate, and a ball is rotatably connected inside the connecting piece.
[0005] As a further optimization content of the present invention, the feeding barrel includes a barrel body, a bottom tube is fixedly connected to the bottom of the barrel body, a circular plate is fixedly connected to the middle of the bottom end of the barrel body, a conical hole is opened inside the circular plate, and a sponge block is fixedly connected to the inside of the conical hole.
[0006] As a further optimization of the present invention, there are multiple conical holes, the conical holes correspond one to one with the sponge blocks, the conical holes are through holes, the bottom tube is arranged at the lower end of the circular plate, and the bottom tube is connected to the lower end of the trachea.
[0007] As a further optimization of the present invention, the column shell is provided with two sections, the two sections of the column shell are welded and fixed by connecting rods, three connecting rods are provided, the connecting rods are distributed in a circular shape and equidistantly inside the hollow section, the connecting rods are parallel to each other, and the two sections of the column shell have the same axis.
[0008] As a further optimization of the present invention, there are two annular grooves, there is a one-to-one correspondence between the annular grooves and the connecting piece, the connecting piece is arranged in an annular shape, there are multiple balls installed inside the connecting piece, the balls are arranged in equal intervals inside the connecting piece, and the connecting piece and the balls are both arranged inside the annular grooves.
[0009] As a further optimization of the present invention, there are multiple positioning blocks and locking bolts, and there is a one-to-one correspondence between the positioning blocks and the locking bolts, and the bottom end of the locking bolt is in close contact with the outer wall of the column shell.
[0010] As a further optimization of the present invention, there are three material valves and three connecting pipes, and there is a one-to-one correspondence between the material valves and the connecting pipes, and one end of the connecting pipe is arranged inside the sealing ring plate.
[0011] As a further optimization of the present invention, there are two sealing rings, the sealing ring is arranged at an end of the connecting piece away from the center of the loading box, the sealing ring is arranged between the column shell and the sealing ring plate, and the column shell and the sealing ring plate have the same axis.
[0012] As a further optimization of the present invention, one end of the heating straight tube away from the feeding tube is fixedly connected to the connecting tube, and a spirally distributed electric heating wire is provided on the outside of the heating straight tube.
[0013] As a further optimized content of the present invention, the following steps are included: Step I: Loading materials inside the feed barrel: Loading raw materials into the corresponding feed barrel for later loading, and the angle of the feed mechanism can be adjusted according to the position of the feed barrel; Step II: Control the negative pressure inside the feeding box: The whole equipment is powered on. After the power is turned on, the negative pressure unit is controlled to pump negative pressure inside the column shell. After the negative pressure is pumped out, the corresponding material valve is opened according to the needs of feeding. Under the action of suction, the raw materials inside the corresponding feeding barrel enter the column shell through the feeding pipe. When the raw materials pass through the heating straight pipe, the heating straight pipe will preheat the raw materials passing through, and bring the hot air inside the heating straight pipe into the column shell to continuously heat the raw materials; Step III: Raw material heating: During the subsequent continuous operation of the negative pressure unit, the hot air inside the column shell will enter the annular pipe through the negative pressure exhaust pipe. The electric air valve of the corresponding feed barrel will be opened according to the needs of feeding, so that this part of the hot air can enter the lower end of the feed barrel through the air pipe. When this part of the hot air enters the lower end of the feed barrel, it can be discharged into the feed barrel from the conical hole opened inside the circular plate, thereby preheating the raw materials inside the feed barrel; Step IV: Unloading: The raw materials entering the column shell are discharged from the automatic unloading valve installed at the bottom of the loading box according to actual needs.
[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by providing a feeding mechanism, a negative pressure unit, a heating straight pipe, an air pipe and a feeding barrel, the heating straight pipe can complete the heating during the feeding process, and at the same time, hot air is brought into the interior of the column shell to continuously heat the raw materials, and in the process of negative pressure extraction, the hot air discharged from the negative pressure unit is used to heat the raw materials inside the barrel body, effectively preventing the problem of the ambient temperature near the workstation being increased by the hot air discharged from the negative pressure unit, and at the same time, the discharged hot air can be reused; 2. In the present invention, the feeding mechanism is provided, and the feeding angle can be adjusted according to the actual feeding requirements, thereby effectively improving the overall application range of the device. The adjustment can be achieved only by rotating the sealing ring plate and fixing the locking bolt, which is relatively convenient. 3. In the present invention, by setting up multiple electric gas valves and material valves, the feeding can be adjusted according to actual needs, and the feeding can be carried out through multiple positions, which is more in line with the needs of factory production, provides great convenience for feeding, and also provides more installation range for the installation of the entire feeding device; 4. In the present invention, by setting the sealing ring plate, ring groove and connecting parts, in the actual application process of the entire device, the stability of the connection and the sealing effect between the feeding mechanism and the loading box can be improved, and the structure is simpler, which can reduce the production cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the loading box of the present invention; Figure 3 It is a schematic diagram of the column shell structure of the present invention; Figure 4 For the present invention Figure 2 Schematic diagram of the structure at A in the middle; Figure 5 It is a schematic diagram of the structure of the feeding mechanism of the present invention; Figure 6 It is a schematic diagram of the structure of the feed barrel of the present invention; Figure 7 It is a schematic diagram of the structure of the tapered hole opening position of the present invention.
[0016] In the figure: 1, feeding box; 101, column shell; 102, hollow section; 103, connecting rod; 104, annular groove; 2. Feeding mechanism; 21. Sealing ring plate; 22. Positioning block; 23. Locking bolt; 24. Material valve; 25. Connecting pipe; 26. Connecting piece; 27. Sealing ring; 28. Ball; 3. Support legs; 4. Negative pressure unit; 5. Negative pressure exhaust pipe; 6. Annular pipe; 7. Air pipe; 8. Electric air valve; 9. Heating straight pipe; 10. Feeding pipe; 11. Feed barrel; 111. Barrel body; 112. Bottom tube; 113. Round plate; 114. Sponge block; 115. Conical hole; 12. Cover the barrel. DETAILED DESCRIPTION
[0017] See also Figure 1-7 , the present invention provides a technical solution: The preheatable multi-channel automatic feeding system based on injection molding and its control method include a negative pressure unit 4, the lower end of the negative pressure unit 4 is fixedly connected to a feeding box 1 with an automatic unloading valve installed at the bottom, the bottom of the feeding box 1 is fixedly connected to a supporting leg 3, a feeding mechanism 2 is installed in the middle of the feeding box 1, one side of the negative pressure unit 4 is fixedly connected to a negative pressure exhaust pipe 5 for exhaust, the other end of the negative pressure exhaust pipe 5 is fixedly connected to an annular pipe 6, the outer side of the annular pipe 6 is fixedly connected to an air pipe 7, the other end of the air pipe 7 is fixedly connected to a feeding barrel 11, the upper end of the feeding barrel 11 is provided with a barrel cover 12, a feeding pipe 10 is provided in the middle of the barrel cover 12, and the other end of the feeding pipe 10 is fixedly connected to a heating A straight pipe 9 and an electric air valve 8 are installed on the upper end of the air pipe 7; the loading box 1 includes a column shell 101, a hollow section 102 is provided in the middle of the column shell 101, a connecting rod 103 is provided in the hollow section 102, and an annular groove 104 is provided on the outer side of the column shell 101; the feeding mechanism 2 includes a sealing ring plate 21, a positioning block 22 is fixedly connected to the upper end of the sealing ring plate 21, a locking bolt 23 is spirally connected inside the positioning block 22, a connecting pipe 25 is fixedly connected in the middle of the sealing ring plate 21, a material valve 24 is installed on one end of the connecting pipe 25 exposed from the sealing ring plate 21, a connecting piece 26 and a sealing ring 27 are fixedly connected inside the sealing ring plate 21, and a ball 28 is rotatably connected inside the connecting piece 26.
[0018] As a technical solution further implemented in this scheme, the feed barrel 11 includes a barrel body 111, the barrel body 111 is fixedly connected to a bottom tube 112 at the bottom of the barrel body 111, a circular plate 113 is fixedly connected to the middle of the bottom end of the barrel body 111, a conical hole 115 is opened inside the circular plate 113, a sponge block 114 is fixedly connected inside the conical hole 115, a plurality of conical holes 115 are provided, and the conical holes 115 correspond to the sponge blocks 114 one by one, and the conical holes 115 are through holes, and the bottom tube 112 is arranged at the lower end of the circular plate 113, and the bottom tube 112 is connected to the lower end of the air pipe 7. Through the above arrangement, the exhaust of the negative pressure unit 4 can be used to preheat the raw materials placed inside the feed barrel 11 during the continuous feeding process; As a technical solution for further implementation of this scheme, the column shell 101 is provided with two sections, and the two sections of the column shell 101 are welded and fixed by connecting rods 103. There are three connecting rods 103, and the connecting rods 103 are distributed in an annular shape and equidistantly inside the hollow section 102. The connecting rods 103 are parallel to each other, and the two sections of the column shell 101 have the same axis. Through the above arrangement, the stability of the overall structure of the loading box 1 can be improved; As a technical solution for further implementation of this scheme, two annular grooves 104 are provided, and there is a one-to-one correspondence between the annular grooves 104 and the connecting member 26. The connecting member 26 is annularly arranged, and there are multiple balls 28 installed inside the connecting member 26. The balls 28 are arranged in equal intervals inside the connecting member 26. The connecting member 26 and the balls 28 are both arranged inside the annular grooves 104. Through the above arrangement, the stability of the connection between the feeding mechanism 2 and the loading box 1 can be further improved; As a technical solution for further implementation of this solution, a plurality of positioning blocks 22 and locking bolts 23 are provided, and the positioning blocks 22 and locking bolts 23 correspond to each other one by one, and the bottom end of the locking bolt 23 is in close contact with the outer wall of the column shell 101. Through the above arrangement, the angle of the feeding mechanism 2 can be adjusted as needed during the actual application process; As a technical solution for further implementation of this scheme, three material valves 24 and connecting pipes 25 are provided, and there is a one-to-one correspondence between the material valves 24 and the connecting pipes 25. One end of the connecting pipe 25 is arranged inside the sealing ring plate 21. Through the above arrangement, the required feed barrel 11 can be controlled to load the material; As a further technical solution for the implementation of this scheme, two sealing rings 27 are provided, and the sealing rings 27 are arranged at one end of the connecting member 26 away from the center of the loading box 1. The sealing ring 27 is arranged between the column shell 101 and the sealing ring plate 21. The column shell 101 and the sealing ring plate 21 have the same axis. Through the above arrangement, the sealing effect of the connection between the loading box 1 and the feeding mechanism 2 can be further improved; As a further technical solution for implementing this scheme, one end of the heating straight tube 9 away from the feeding tube 10 is fixedly connected to the connecting tube 25, and a spirally distributed electric heating wire is arranged outside the heating straight tube 9. Through the above arrangement, the raw material can be further heated during the feeding process; As a technical solution for further implementation of this scheme, the following steps are included: Step I: Loading materials inside the feed barrel 11: Loading raw materials into the corresponding feed barrel 11 for later loading, and at the same time, the angle of the feed mechanism 2 can be adjusted according to the position of the feed barrel 11; Step II: Control the negative pressure inside the feeding box 1: The whole equipment is powered on. After the power is turned on, the negative pressure unit 4 is controlled to pump negative pressure inside the column shell 101. After the negative pressure is pumped out, according to the need of feeding, the corresponding material valve 24 is opened. Under the action of suction, the raw materials inside the corresponding feeding barrel 11 enter the column shell 101 through the feeding pipe 10. When the raw materials pass through the heating straight pipe 9, the heating straight pipe 9 will preheat the raw materials passing through, and bring the hot air inside the heating straight pipe 9 into the column shell 101 to continuously heat the raw materials; Step III: Heating the raw materials: During the subsequent continuous operation of the negative pressure unit 4, the hot air inside the column shell 101 will enter the annular pipe 6 through the negative pressure exhaust pipe 5. The electric air valve 8 corresponding to the feed barrel 11 will be opened according to the need of feeding, so that this part of the hot air can enter the lower end of the feed barrel 11 through the air pipe 7. When this part of the hot air enters the lower end of the feed barrel 11, it can be discharged from the tapered hole 115 opened in the circular plate 113 into the feed barrel 11, thereby preheating the raw materials inside the feed barrel 11; Step IV: Unloading: The raw materials entering the column housing 101 are discharged from the automatic unloading valve installed at the bottom of the loading box 1 according to actual needs.
[0019] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.
Claims
1. A preheatable multi-channel automatic feeding system based on injection molding, comprising a negative pressure unit (4), characterized in that: The lower end of the negative pressure unit (4) is fixedly connected to a loading box (1) with an automatic unloading valve installed at the bottom, the lower end of the loading box (1) is fixedly connected to a supporting leg (3), a feeding mechanism (2) is installed in the middle of the loading box (1), one side of the negative pressure unit (4) is fixedly connected to a negative pressure exhaust pipe (5) for exhaust, the other end of the negative pressure exhaust pipe (5) is fixedly connected to an annular pipe (6), the outer side of the annular pipe (6) is fixedly connected to an air pipe (7), the other end of the air pipe (7) is fixedly connected to a feeding barrel (11), the upper end of the feeding barrel (11) is provided with a barrel upper cover (12), a loading pipe (10) is provided in the middle of the barrel upper cover (12), the other end of the loading pipe (10) is fixedly connected to a heating straight pipe (9), and the upper end of the air pipe (7) is installed with an electric air valve (8); The loading box (1) comprises a column shell (101), a hollow section (102) is provided in the middle of the column shell (101), a connecting rod (103) is provided in the hollow section (102), and an annular groove (104) is provided on the outer side of the column shell (101); The feeding mechanism (2) comprises a sealing ring plate (21), a positioning block (22) is fixedly connected to the upper end of the sealing ring plate (21), a locking bolt (23) is spirally connected inside the positioning block (22), a connecting pipe (25) is fixedly connected in the middle of the sealing ring plate (21), a material valve (24) is installed at one end of the connecting pipe (25) exposed from the sealing ring plate (21), a connecting piece (26) and a sealing ring (27) are fixedly connected inside the sealing ring plate (21), and a ball (28) is rotatably connected inside the connecting piece (26).
2. The preheatable multi-channel automatic feeding system based on injection molding according to claim 1 is characterized in that: The feed barrel (11) comprises a barrel body (111), the barrel body (111) having a bottom tube (112) fixedly connected to the bottom of the barrel body (111), a circular plate (113) fixedly connected to the middle of the bottom end of the barrel body (111), a conical hole (115) formed inside the circular plate (113), and a sponge block (114) fixedly connected inside the conical hole (115).
3. The preheatable multi-channel automatic feeding system based on injection molding according to claim 2 is characterized in that: A plurality of the conical holes (115) are provided, and the conical holes (115) correspond to the sponge blocks (114) one by one. The conical holes (115) are through holes. The bottom tube (112) is provided at the lower end of the circular plate (113), and the bottom tube (112) is connected to the lower end of the air pipe (7).
4. The preheatable multi-channel automatic feeding system based on injection molding according to claim 1 is characterized in that: The column shell (101) is provided with two sections, and the two sections of the column shell (101) are fixed by welding via connecting rods (103). Three connecting rods (103) are provided, and the connecting rods (103) are distributed in an annular shape at equal intervals inside the hollow section (102). The connecting rods (103) are parallel to each other, and the two sections of the column shell (101) share the same axis.
5. The preheatable multi-channel automatic feeding system based on injection molding according to claim 1 is characterized in that: Two annular grooves (104) are provided, and there is a one-to-one correspondence between the annular grooves (104) and the connecting member (26). The connecting member (26) is arranged in an annular shape, and a plurality of balls (28) are installed inside the connecting member (26). The balls (28) are arranged inside the connecting member (26) and are evenly distributed. The connecting member (26) and the balls (28) are both arranged inside the annular groove (104).
6. The preheatable multi-channel automatic feeding system based on injection molding according to claim 1 is characterized in that: A plurality of the positioning blocks (22) and locking bolts (23) are provided, and the positioning blocks (22) and locking bolts (23) correspond to each other one by one. The bottom ends of the locking bolts (23) are in close contact with the outer wall of the column housing (101).
7. The preheatable multi-channel automatic feeding system based on injection molding according to claim 1 is characterized in that: The material valves (24) and the connecting pipes (25) are each provided with three, and there is a one-to-one correspondence between the material valves (24) and the connecting pipes (25), and one end of the connecting pipe (25) is arranged inside the sealing ring plate (21).
8. The preheatable multi-channel automatic feeding system based on injection molding according to claim 1 is characterized in that: Two sealing rings (27) are provided. The sealing rings (27) are arranged at one end of the connecting piece (26) away from the center of the loading box (1). The sealing rings (27) are arranged between the column shell (101) and the sealing ring plate (21). The column shell (101) and the sealing ring plate (21) have the same axis.
9. The preheatable multi-channel automatic feeding system based on injection molding according to claim 1 is characterized in that: One end of the heating straight tube (9) away from the feeding tube (10) is fixedly connected to the connecting tube (25), and a spirally distributed electric heating wire is provided on the outside of the heating straight tube (9).
10. The control method of the preheatable multi-channel automatic feeding system based on injection molding according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: Step I: loading materials inside the feed barrel (11): loading raw materials into the corresponding feed barrel (11) for later loading, and at the same time, the angle of the feed mechanism (2) can be adjusted according to the position of the feed barrel (11); Step II: Controlling the generation of negative pressure inside the feeding box (1): The entire device is powered on. After the power is turned on, the negative pressure unit (4) is controlled to pump negative pressure inside the column shell (101). After the negative pressure is pumped out, the corresponding material valve (24) is opened according to the need for feeding. Under the action of suction, the raw materials inside the corresponding feeding barrel (11) enter the column shell (101) through the feeding pipe (10). When the raw materials pass through the heating straight pipe (9), the heating straight pipe (9) preheats the raw materials passing through, and brings the hot air inside the heating straight pipe (9) into the column shell (101), thereby continuously heating the raw materials. Step III: Heating the raw materials: During the subsequent continuous operation of the negative pressure unit (4), the hot air inside the column shell (101) will enter the inside of the annular pipe (6) through the negative pressure exhaust pipe (5). The electric air valve (8) corresponding to the feed barrel (11) will be opened according to the need for feeding, so that this part of the hot air can enter the lower end of the feed barrel (11) through the air pipe (7). When this part of the hot air enters the lower end of the feed barrel (11), it can be discharged into the inside of the feed barrel (11) through the tapered hole (115) opened inside the circular plate (113), thereby preheating the raw materials inside the feed barrel (11); Step IV: Unloading: The raw materials entering the column housing (101) are discharged from the automatic unloading valve installed at the bottom of the loading box (1) according to actual needs.