Anti-residual curing injection molding head and biodegradable meal box injection molding machine

Abstract

The utility model discloses an anti-residual curing injection molding head and a biodegradable lunch box injection molding machine, relates to the technical field of injection molding heads, and aims to solve the problems that after injection molding of an existing injection molding machine is completed, part of excess materials are left in the injection molding head, and the excess materials are solidified in the injection molding head after being cooled, so that the injection molding efficiency is improved. Air inlet grooves are symmetrically formed in the upper end and the lower end of one side of the injection molding head, baffles are rotationally installed in the air inlet grooves, one sides of the air inlet grooves are connected with air conveying pipes in a sealed mode, and limiting blocks are fixedly installed on the sides, close to the air inlet grooves, of the baffles. The limiting block is attached to the baffle, an iron block is fixedly installed in one end of the baffle, an electromagnet block is installed in the limiting block, and the iron block is connected with the electromagnet block in a magnetic attraction mode.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding heads, in particular to an injection molding head capable of preventing residual solidification and a biodegradable lunch box injection molding machine. Background Art

[0002] Biodegradable lunch boxes are lunch boxes that can be completely degraded into carbon dioxide and water through biochemical reactions under the action of microorganisms and enzymes in the natural environment. This degradation process does not pollute the environment and is an ideal environmentally friendly tableware. The main materials are paper, starch-based and PLA and other bio-based materials. Among them, starch-based and PLA and other bio-based materials require injection molding by injection molding machines. Lunch box injection molding machine is a plastic processing machine that uses injection molding technology to inject molten plastic into the mold, and obtains the desired shape of lunch box products after cooling and solidification. Its working principle mainly includes the steps of heating and melting plastic raw materials, high-pressure injection into the mold, cooling and solidification, and demolding. Lunch box injection molding machines usually use high-speed injection molding technology, which can complete the production of a large number of lunch boxes in a short time. Injection molded lunch box products have the characteristics of precise size and stable structure, which can meet the needs of different customers. The injection head is mainly used in the injection molding process to inject molten plastic into the mold to obtain plastic products of the desired shape. It is an important component on the injection molding machine and is directly related to the quality and efficiency of injection molding.

[0003] The Chinese patent announcement number is CN207128199U, which discloses an injection molding machine nozzle alignment device, including a mold head plate, an injection molding machine head plate and an injection molding nozzle. The injection molding nozzle is provided with a first flow channel, and the injection molding machine head plate is provided with a first positioning portion. The mold head plate is provided with a second flow channel and a recessed portion that cooperates with the head of the injection molding nozzle, the second flow channel is connected to the recessed portion, and a second positioning portion and a positioning space surrounded by the second positioning portion are provided on one side of the mold head plate close to the injection molding machine head plate, and the first positioning portion can slide relative to the second positioning portion to connect the first flow channel with the second flow channel. The utility model provides an injection molding machine, including a driving device and an injection molding machine nozzle alignment device. The injection molding machine nozzle alignment device and the injection molding machine provided by the utility model have simple structures and are easy to use. At the same time, it can quickly complete the alignment process and improve the efficiency of mold replacement.

[0004] The above-mentioned prior art solution has the following defects: after the injection molding is completed, some residual material will remain in the injection head. When the residual material cools down, it will solidify inside the injection head, affecting the smooth passage of the raw material through the injection head when the next injection molding work starts. Therefore, we propose an injection molding head that prevents residual solidification and a biodegradable lunch box injection molding machine to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide an injection molding head and a biodegradable lunch box injection molding machine that prevent residual solidification, so as to solve the problem in the above-mentioned background technology that after the injection molding of the existing injection molding machine is completed, some residual materials will remain in the injection molding head, and when the residual materials are cooled, they will solidify inside the injection molding head, affecting the smooth passage of the raw materials through the injection molding head when the next injection molding work starts.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an injection molding head for preventing residual solidification, comprising an injection molding head, wherein air inlet grooves are symmetrically provided at the upper and lower ends of one side of the injection molding head, a baffle is rotatably installed inside the air inlet groove, an air supply pipe is sealed and connected to one side of the air inlet groove, a limit block is fixedly installed on the side of the baffle close to the air inlet groove, the limit block is fitted with the baffle, an iron block is fixedly installed inside one end of the baffle, an electromagnet block is installed inside the limit block, and the iron block is magnetically connected to the electromagnet block.

[0007] A biodegradable lunch box injection molding machine comprises an injection molding machine and an injection molding head, wherein a fixed mold is fixedly installed at a middle position above the injection molding machine, a movable mold is slidably installed on one side of the fixed mold, a plasticizing component is installed on the other side of the fixed mold, an injection molding head is fixedly installed on one end of the plasticizing component, a cleaning mechanism is installed on one side of the injection molding head, a gate valve is fixedly installed between the plasticizing component and the injection molding head, a fixed seat is fixedly installed on one side of the upper end of the injection molding machine, a hydraulic oil cylinder is fixedly installed on one side of the fixed seat, a material ejecting mechanism is fixedly installed on one side of the fixed seat, and the material ejecting mechanism is slidably connected to the movable mold.

[0008] Preferably, the cleaning mechanism includes an electric telescopic cylinder, a motor box, a first motor, a mounting block, a fixing ring, a mounting seat, a connecting rod, a mounting ring, a driven gear, an injection head cleaning slot, an injection head slot cleaning block, a cleaning brush, a second motor and a driving gear. A fixing ring is provided at one end of the cleaning mechanism, a mounting block is fixedly installed above the fixing ring, a motor box is provided on one side of the mounting block, a first motor is installed inside the motor box, an output end of the first motor is transmission-connected to the mounting block, and the motor box is fixedly connected to the plasticizing component via an electric telescopic cylinder.

[0009] Preferably, a mounting seat is installed at the middle position inside the fixing ring, the outer side of the mounting seat is rotatably connected with a mounting ring through a bearing, the mounting ring and the fixing ring are fixedly connected through a connecting rod, the outer fixing sleeve at the middle position of the mounting seat is provided with a driven gear, a second motor is fixedly installed on one side below the fixing ring, a driving gear is installed on the output end of the second motor, and the driving gear is meshingly connected with the driven gear.

[0010] Preferably, an injection head slot cleaning block is fixedly mounted on one end of the mounting seat close to the fixed mold, the injection head slot cleaning block is in contact with the fixed mold, and an injection head cleaning slot is provided on one end of the mounting seat close to the injection head.

[0011] Preferably, the injection head cleaning groove is fitted with the injection head, a cleaning brush is fixedly installed at the middle position of the injection head cleaning groove, an injection groove is opened inside the injection head, and the cleaning brush is fitted with the injection groove.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model cleans the injection molding head through the cleaning mechanism, extends the electric telescopic cylinder to move the motor box toward the fixed mold, and when the fixed ring moves to the position misaligned with the injection molding head, starts the first motor, and the output end of the first motor drives the mounting block to rotate, so that the fixed ring rotates to the bottom of the mounting block, so that the center of the injection molding head cleaning groove coincides with the center of the injection molding head, and then extends the electric telescopic cylinder to make the injection molding head groove cleaning block fit with the feeding port of the fixed mold, and then starts the second motor, and the second motor drives the driving gear to rotate, and the driving gear drives the driven gear to rotate through meshing, and the driven gear The gear drives the mounting seat to rotate synchronously inside the mounting ring through the bearing connection. The injection head slot cleaning block cleans the feeding port of the fixed mold, and then the electric telescopic cylinder is retracted to allow the cleaning brush to enter the inside of the injection slot. The rotating cleaning brush can clean the inside of the injection slot. At the same time, the injection head cleaning slot fits the injection head, so as to clean the surface of the injection head. This solves the problem that some residual materials will remain in the injection head after the injection molding of the existing injection molding machine is completed. When the residual materials are cooled, they will solidify inside the injection head, affecting the smooth passage of the raw materials through the injection head when the next injection molding work starts.

[0014] 2. When the utility model is unblocked, the gate valve is closed, and the air supply pipe is sealed and connected with the air inlet groove. The air supply pipe injects air into the interior of the air inlet groove, and the power supply of the electromagnet block is disconnected. At this time, the magnetic adsorption between the electromagnet block and the iron block is released, and the air blows the baffle open and enters the interior of the injection molding head. The push of the air causes the material blocked inside the injection molding head to be blown out. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the cleaning mechanism in the utility model;

[0017] Figure 3 It is a side view of the cleaning mechanism in the utility model;

[0018] Figure 4 It is a connection diagram of the plasticizing component and the injection molding head in the utility model;

[0019] Figure 5 For the utility model Figure 4 A partial enlarged view of area A.

[0020] In the figure: 1. injection molding machine; 2. fixed mold; 3. movable mold; 4. fixed seat; 5. hydraulic cylinder; 6. ejector mechanism; 7. plasticizing component; 8. injection head; 9. cleaning mechanism; 10. electric telescopic cylinder; 11. motor box; 12. first motor; 13. mounting block; 14. fixing ring; 15. mounting seat; 16. connecting rod; 17. mounting ring; 18. driven gear; 19. injection head cleaning slot; 20. injection head slot cleaning block; 21. cleaning brush; 22. second motor; 23. driving gear; 24. gate valve; 25. air inlet slot; 26. air pipe; 27. injection slot; 28. limit block; 29. ​​baffle; 30. iron block; 31. electromagnet block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] See also Figure 1 and Figure 5 The utility model provides an embodiment: an injection molding head for preventing residual curing, including an injection molding head 8, wherein an air inlet groove 25 is symmetrically provided at the upper and lower ends of one side of the injection molding head 8, a baffle 29 is rotatably installed inside the air inlet groove 25, an air delivery pipe 26 is sealed and connected to one side of the air inlet groove 25, a limit block 28 is fixedly installed on one side of the baffle 29 close to the air inlet groove 25, the limit block 28 is fitted with the baffle 29, an iron block 30 is fixedly installed inside one end of the baffle 29, an electromagnet block 31 is installed inside the limit block 28, and the iron block 30 is magnetically connected to the electromagnet block 31.

[0023] See also Figure 1 A biodegradable lunch box injection molding machine comprises an injection molding machine 1 and an injection molding head 8. A fixed mold 2 is fixedly installed at the middle position above the injection molding machine 1, a movable mold 3 is slidably installed on one side of the fixed mold 2, a plasticizing component 7 is installed on the other side of the fixed mold 2, an injection molding head 8 is fixedly installed on one end of the plasticizing component 7, a cleaning mechanism 9 is installed on one side of the injection molding head 8, a gate valve 24 is fixedly installed between the plasticizing component 7 and the injection molding head 8, a fixed seat 4 is fixedly installed on one side of the upper end of the injection molding machine 1, a hydraulic cylinder 5 is fixedly installed on one side of the fixed seat 4, a ejecting mechanism 6 is fixedly installed on one side of the fixed seat 4, and the ejecting mechanism 6 is slidably connected to the movable mold 3.

[0024] The injection molding head 8 is cleaned by the cleaning mechanism 9, and the electric telescopic cylinder 10 is extended to move the motor box 11 toward the fixed mold 2. When the fixed ring 14 moves to be misaligned with the injection molding head 8, the first motor 12 is started, and the output end of the first motor 12 drives the mounting block 13 to rotate, so that the fixed ring 14 rotates to the bottom of the mounting block 13, so that the center of the injection molding head cleaning groove 19 coincides with the center of the injection molding head 8. At this time, the electric telescopic cylinder 10 is extended to make the injection molding head groove cleaning block 20 fit the feeding port of the fixed mold 2, and the second motor 22 is started at this time. The second motor 22 drives the driving gear 23 to rotate, and the driving gear 23 drives the driven gear 18 to rotate through meshing, and the driven gear 18 drives the mounting seat 15 to rotate synchronously inside the mounting ring 17 through the bearing connection, and the injection head groove cleaning block 20 cleans the feeding port of the fixed mold 2, and then the electric telescopic cylinder 10 is retracted to allow the cleaning brush 21 to enter the inside of the injection groove 27. The rotating cleaning brush 21 can clean the inside of the injection groove 27, and at the same time, the injection head cleaning groove 19 is in contact with the injection head 8, thereby cleaning the surface of the injection head 8.

[0025] See also Figure 1-Figure 4 The cleaning mechanism 9 includes an electric telescopic cylinder 10, a motor box 11, a first motor 12, a mounting block 13, a fixing ring 14, a mounting seat 15, a connecting rod 16, a mounting ring 17, a driven gear 18, an injection head cleaning slot 19, an injection head slot cleaning block 20, a cleaning brush 21, a second motor 22 and a driving gear 23. A fixing ring 14 is provided at one end of the cleaning mechanism 9, a mounting block 13 is fixedly installed above the fixing ring 14, a motor box 11 is provided on one side of the mounting block 13, a first motor 12 is installed inside the motor box 11, an output end of the first motor 12 is transmission-connected to the mounting block 13, and the motor box 11 is fixedly connected to the plasticizing component 7 through the electric telescopic cylinder 10. A mounting seat 15 is installed at the middle position inside the fixed ring 14, and a mounting ring 17 is rotatably connected to the outside of the mounting seat 15 through a bearing, and the mounting ring 17 is fixedly connected to the fixed ring 14 through a connecting rod 16. A driven gear 18 is fixedly installed on the external fixed sleeve at the middle position of the mounting seat 15, and a second motor 22 is fixedly installed on one side below the fixed ring 14. A driving gear 23 is installed on the output end of the second motor 22, and the driving gear 23 is meshed and connected with the driven gear 18. An injection head groove cleaning block 20 is fixedly installed at one end of the mounting seat 15 close to the fixed mold 2, and the injection head groove cleaning block 20 is fitted with the fixed mold 2. An injection head cleaning groove 19 is provided at one end of the mounting seat 15 close to the injection head 8. The injection head cleaning groove 19 is fitted with the injection head 8, and a cleaning brush 21 is fixedly installed at the middle position of the injection head cleaning groove 19. An injection molding groove 27 is provided inside the injection molding head 8, and the cleaning brush 21 is fitted with the injection molding groove 27.

[0026] Working principle: When in use, the fixed mold 2 and the movable mold 3 of the injection molding machine 1 are in a closed state, the screw of the injection molding machine 1 starts to rotate and retreat, sucking the raw material from the hopper, and the raw material is melted into a molten state under the shear force of the screw and the heating action of the barrel. The screw retreats to the set position to form a certain material storage space to complete the pre-plasticization process. The screw is driven by the injection cylinder to inject the molten material into the injection head 8 at high speed and high pressure. The injection head 8 injects the material into the cavity to ensure that the plastic can fill the entire cavity. After the injection is completed, the screw will continue to maintain a certain pressure to ensure that the material is in the mold cavity. The inner surface of the mold is fully compacted and cooled. When the product is completely solidified, the hydraulic cylinder 5 is contracted to drive the movable mold 3 to move the fixed seat 4 in the direction of the fixed mold 2, so that the fixed mold 2 is separated from the movable mold 3. The ejection mechanism 6 fixedly installed on the fixed seat 4 ejects the material in the movable mold 3. At this time, the injection head 8 is separated from the fixed mold 2. When unblocking, the gate valve 24 is closed, and the air supply pipe 26 is sealed and connected to the air inlet groove 25. The air supply pipe 26 injects air into the air inlet groove 25, and the power supply of the electromagnet block 31 is disconnected. At this time, the magnetic attraction between the electromagnet block 31 and the iron block 30 is released, and the air blows the baffle 29 open to enter. Inside the injection head 8, the air pushes the blocked material inside the injection head 8 to be blown out, and the injection head 8 is cleaned by the cleaning mechanism 9. The electric telescopic cylinder 10 is extended to move the motor box 11 toward the fixed mold 2. When the fixed ring 14 moves to the position misaligned with the injection head 8, the first motor 12 is started, and the output end of the first motor 12 drives the mounting block 13 to rotate, so that the fixed ring 14 rotates to the bottom of the mounting block 13, so that the center of the injection head cleaning slot 19 coincides with the center of the injection head 8. At this time, the electric telescopic cylinder 10 is extended to allow the injection head slot cleaning block 20 to coincide with the feeding port of the fixed mold 2. The second motor 22 is started at this time, and the second motor 22 drives the driving gear 23 to rotate. The driving gear 23 drives the driven gear 18 to rotate through meshing. The driven gear 18 drives the mounting seat 15 to rotate synchronously inside the mounting ring 17 through the bearing connection. The injection head groove cleaning block 20 cleans the feeding port of the fixed mold 2, and then the electric telescopic cylinder 10 is retracted to allow the cleaning brush 21 to enter the inside of the injection groove 27. The rotating cleaning brush 21 can clean the inside of the injection groove 27. At the same time, the injection head cleaning groove 19 is in contact with the injection head 8, thereby cleaning the surface of the injection head 8.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An injection molding head for preventing residual solidification, comprising an injection molding head (8), characterized in that: An air inlet groove (25) is symmetrically provided at the upper and lower ends of one side of the injection head (8), a baffle (29) is rotatably mounted inside the air inlet groove (25), one side of the air inlet groove (25) is sealedly connected to an air delivery pipe (26), a limit block (28) is fixedly mounted on a side of the baffle (29) close to the air inlet groove (25), the limit block (28) is fitted with the baffle (29), an iron block (30) is fixedly mounted inside one end of the baffle (29), an electromagnet block (31) is mounted inside the limit block (28), and the iron block (30) is magnetically connected to the electromagnet block (31).

2. A biodegradable lunch box injection molding machine, comprising an injection molding machine (1) and the injection molding head (8) according to claim 1, characterized in that: A fixed mold (2) is fixedly installed at the middle position above the injection molding machine (1), a movable mold (3) is slidably installed on one side of the fixed mold (2), a plasticizing component (7) is installed on the other side of the fixed mold (2), an injection head (8) is fixedly installed on one end of the plasticizing component (7), a cleaning mechanism (9) is installed on one side of the injection head (8), a gate valve (24) is fixedly installed between the plasticizing component (7) and the injection head (8), a fixed seat (4) is fixedly installed on one side of the upper end of the injection molding machine (1), a hydraulic cylinder (5) is fixedly installed on one side of the fixed seat (4), a material ejection mechanism (6) is fixedly installed on one side of the fixed seat (4), and the material ejection mechanism (6) is slidably connected to the movable mold (3).

3. The biodegradable lunch box injection molding machine according to claim 2, characterized in that: The cleaning mechanism (9) comprises an electric telescopic cylinder (10), a motor box (11), a first motor (12), a mounting block (13), a fixing ring (14), a mounting seat (15), a connecting rod (16), a fixing ring (17), a driven gear (18), an injection head cleaning slot (19), an injection head slot cleaning block (20), a cleaning brush (21), a second motor (22) and a driving gear (23). A fixing ring (14) is provided at one end of the cleaning mechanism (9), a mounting block (13) is fixedly mounted above the fixing ring (14), a motor box (11) is provided at one side of the mounting block (13), a first motor (12) is mounted inside the motor box (11), an output end of the first motor (12) is transmission-connected to the mounting block (13), and the motor box (11) is fixedly connected to the plasticizing component (7) via the electric telescopic cylinder (10).

4. The biodegradable lunch box injection molding machine according to claim 3, characterized in that: A mounting seat (15) is installed at a middle position inside the fixing ring (14); a mounting ring (17) is rotatably connected to the outside of the mounting seat (15) via a bearing; the mounting ring (17) is fixedly connected to the fixing ring (14) via a connecting rod (16); a driven gear (18) is fixedly sleeved on the outside of the mounting seat (15) at a middle position; a second motor (22) is fixedly installed on one side below the fixing ring (14); a driving gear (23) is transmission-mounted on the output end of the second motor (22); the driving gear (23) is meshingly connected to the driven gear (18).

5. The biodegradable lunch box injection molding machine according to claim 4, characterized in that: An injection head slot cleaning block (20) is fixedly mounted on one end of the mounting seat (15) close to the fixed mold (2), the injection head slot cleaning block (20) is in close contact with the fixed mold (2), and an injection head cleaning slot (19) is formed on one end of the mounting seat (15) close to the injection head (8).

6. The biodegradable lunch box injection molding machine according to claim 5, characterized in that: The injection head cleaning groove (19) fits with the injection head (8), a cleaning brush (21) is fixedly installed at the middle position of the injection head cleaning groove (19), an injection groove (27) is provided inside the injection head (8), and the cleaning brush (21) fits with the injection groove (27).

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