A material storage switch mechanism for a large injection volume injection molding machine shooting platform
By designing the injection material storage switch mechanism of the injection platform of the injection molding machine with a large injection volume, the taper mating surface and seal mating surface of the needle valve can achieve precise control of the melt adhesive and injection adhesive, solving the problem of injection reflux and inconsistent temperature, ensuring that The injection accuracy and quantity stability extend the service life of the equipment.
Patent Information
- Application Number
- CN202210277172.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-03-21
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2042-03-21
AI Technical Summary
The existing injection molding system of the injection molding machine cannot inject large-volume and heavy modified plastic products at one time, and multiple injection moldings lead to inconsistent cooling temperatures, making it difficult to achieve unified accuracy, and there is injection reflux and inversion, which affects the injection accuracy.
A large injection volume injection material storage switch mechanism is designed, including a melting glue cylinder, an extrusion screw, a needle valve and a storage barrel. The tapered fitting surface and sealing fitting surface of the needle valve are realized. Accurate control of glue prevents backflow and ensures injection volume and accuracy.
It realizes control of the completion of one-time injection molding, prevents injection reflux and injects, ensures the stability of injection accuracy and quantity, and extends the service life of the equipment.
Smart Images
Figure CN114734596B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of injection molding machines, in particular to a material storage switch mechanism for a shooting platform of a large injection volume injection molding machine. Background Art
[0002] With the increase in the strength of modified plastics and the increase in the variety of modified plastics, there are more and more plastic substitute products for marine aquaculture and urban construction. These products have a common attribute of large volume and heavy gram weight. The existing injection molding machine injection system cannot meet the demand for one-time injection volume, or it takes multiple injections to complete a product, and multiple injections lead to different cooling and it is difficult to reach a uniform temperature. Therefore, a mechanism is needed to control the amount of plasticized glue and injection to complete the injection molding product in one time. In order to prevent injection backflow and back suction during injection, this mechanism needs to accurately control the accuracy of the melt and injection amount to ensure that the gram weight of each injection product is within a reasonable fluctuation range. Therefore, those skilled in the art provide a large injection volume injection molding machine shooting table storage material switch mechanism to solve the problems raised in the above background technology. Summary of the invention
[0003] The object of the present invention is to provide a material storage switch mechanism for a shooting platform of a large injection molding machine to solve the problems raised in the above-mentioned background technology.
[0004] To achieve the above object, the present invention provides the following technical solutions:
[0005] A material storage switch mechanism for a shooting platform of a large injection volume injection molding machine comprises a melt glue barrel and an extrusion screw, wherein the extrusion screw is arranged inside the melt glue barrel, a melt glue shooting seat is arranged at one end of the melt glue barrel, an L-shaped channel one is integrally formed inside the melt glue shooting seat, a needle valve one is arranged below the melt glue shooting seat, a melt glue connection seat is arranged at the bottom of the melt glue shooting seat, a shooting seat is arranged below the melt glue connection seat, a nozzle connection seat two is arranged at one end of the shooting seat, a nozzle connection seat one is arranged on one side of the nozzle connection seat two, a nozzle is mounted on the nozzle connection seat one, a material storage barrel is arranged at the other end of the shooting seat, a plunger is arranged inside the material storage barrel, a channel three is opened inside the shooting seat, a channel two is opened inside the melt glue connection seat, and a channel four is opened inside the nozzle connection seat two.
[0006] As a further solution of the present invention: the needle valve 1 includes a material passing groove opened at the bottom end of the outer wall of the needle valve 1 and a tapered mating surface integrally formed with the upper periphery of the needle valve 1 and matched with the internal channel 1 of the melt injection seat; the needle valve 2 includes a sealing mating surface integrally formed on one side of the needle valve 2 and matched with the channel 3 inside the injection seat.
[0007] As a further solution of the present invention: the extrusion screw is rotatably connected to the melt glue cylinder, and the melt glue injection seat is connected to the melt glue cylinder via screws.
[0008] As a further solution of the present invention: the melt glue joint is connected to the melt glue injection seat and the injection seat by screws, and the channel 2 inside the melt glue joint is connected to the channel 1 and the channel 3.
[0009] As a further solution of the present invention: the nozzle is connected to the nozzle seat 1 through a threaded seal, the nozzle seat 1 is connected to the nozzle seat 2 through a screw, and the channel 4 is concentric with the channel 3.
[0010] As a further solution of the present invention: the needle valve 1 is movably arranged at the intersection of channel 1 of the melt injection seat and channel 2 of the melt injection seat, and the needle valve 2 is movably installed at the intersection of channel 4 of the nozzle seat 2 and channel 3 of the injection seat.
[0011] As a further solution of the present invention: the shooting seat is connected to the second nozzle seat by screws, the shooting seat is connected to the storage barrel by screws, and the plunger is connected to the inner hole of the storage barrel in a sliding and sealing manner.
[0012] As a further solution of the present invention: the shooting seat is provided with pilot holes located on the periphery of the channel three, and there are seven pilot holes. The nozzle receiving seat two is located at one end of the shooting seat and is provided with a pressure-bearing groove located on the periphery of the channel four. The inner cavity of the storage barrel is connected with the pressure-bearing groove through the pilot holes.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] 1. In the present invention, needle valve 1 is installed in the channels of the melt glue injection seat and the melt glue connection seat; needle valve 2 is installed in the channels of the injection seat and the nozzle connection seat 2. The opening and closing of needle valve 1 and needle valve 2 are related to each other, so that the molten glue in the storage barrel will not flow back into the melt glue barrel, resulting in insufficient injection volume and injection accuracy deviation, thereby ensuring that the melt glue and injection accuracy of the injection molding machine are more accurate;
[0015] 2. In the present invention, by processing the pressure groove and the pilot hole on the two end faces of the melt-adhesive seat, the injection seat and the nozzle seat, the structure is simple and the cost is low. The opening of the needle valve 1 and the needle valve 2 is based on the pilot principle of the hydraulic oil valve, which is efficient, and the opening and closing process of the needle valve 1 and the needle valve 2 is stable, thereby extending the service life of the mechanism. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of the present invention;
[0017] Figure 2 For the present invention Figure 1 Right sectional view of the middle II part;
[0018] Figure 3 For the present invention Figure 2 Right sectional view of the middle JJ area;
[0019] Figure 4 For the present invention Figure 2 Partial enlarged view of the second part of the middle needle valve
[0020] Figure 5 For the present invention Figure 2 A partial enlarged view of a part of the middle needle valve.
[0021] In the figure: 1. melt glue cylinder; 2. extrusion screw; 3. melt glue injection seat; 4. channel one; 5. needle valve one; 501. taper matching surface; 502. material trough; 6. melt glue connection seat; 601. channel two; 7. nozzle; 8. storage cylinder; 9. nozzle connection seat one; 10. needle valve two; 1001. sealing matching surface; 11. nozzle connection seat two; 1101. channel four; 1102. pressure groove; 12. injection seat; 1201. pilot hole; 1202. channel three; 13. plunger. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.
[0023] See also Figures 1 to 5 In an embodiment of the present invention, a material storage switch mechanism for a large injection volume injection molding machine shooting platform includes a melt barrel 1 and an extrusion screw 2, wherein the extrusion screw 2 is arranged inside the melt barrel 1, and a melt barrel 1 is provided with a melt shooting seat 3 at one end thereof, and an L-shaped channel 4 is integrally formed inside the melt shooting seat 3, a needle valve 5 is arranged below the melt shooting seat 3, a melt connection seat 6 is arranged at the bottom of the melt shooting seat 3, and a shooting seat 12 is arranged below the melt connection seat 6, a nozzle connection seat 2 11 is arranged at one end of the shooting seat 12, a nozzle connection seat 1 9 is arranged on one side of the nozzle connection seat 2 11, and a nozzle 7 is installed on the nozzle connection seat 1 9, a material storage barrel 8 is arranged at the other end of the shooting seat 12, a plunger 13 is arranged inside the material storage barrel 8, a channel 3 1202 is opened inside the shooting seat 12, a channel 2 601 is opened inside the melt connection seat 6, and a channel 4 1101 is opened inside the nozzle connection seat 2 11.
[0024] Among them, the needle valve 15 includes a material flow groove 502 opened at the bottom end of the outer wall of the needle valve 15 and a tapered mating surface 501 integrally formed with the outer periphery above the needle valve 15 and matched with the internal channel 14 of the melt injection seat 3. The needle valve 2 10 includes a sealing mating surface 1001 integrally formed on one side of the needle valve 2 10 and matched with the channel 3 1202 inside the injection seat 12. The tapered mating surface 501 on the needle valve 15 is tightly attached to and separated from the inner wall of the channel 1 4, so as to realize the opening and closing of the channel 1 4. The two sealing mating surfaces 1001 on the needle valve 2 10 are tightly attached to and separated from the inner wall of the channel 3 1202 or the channel 4 1101, so as to realize the closing and opening of the channel 3 1202 and the channel 4 1101 respectively.
[0025] The extrusion screw 2 is rotatably connected to the melt glue cylinder 1 , and the melt glue injection seat 3 is connected to the melt glue cylinder 1 via screws. The extrusion screw 2 rotates to extrude the molten glue inside the melt glue cylinder 1 .
[0026] The melt glue joint 6 is connected to the melt glue injection seat 3 and the injection seat 12 by screws, and the channel 2 601 inside the melt glue joint 6 is connected to the channel 1 4 and the channel 3 1202 to ensure the circulation of the molten glue.
[0027] Among them, the nozzle 7 is connected to the nozzle seat 1 9 through a threaded seal, the nozzle seat 1 9 is connected to the nozzle seat 2 11 through screws, and the channel 4 1101 is concentric with the channel 3 1202, the needle valve 1 5 is movably arranged at the intersection of the channel 1 4 of the melt injection seat 3 and the channel 2 601 of the melt injection seat 6, and the needle valve 2 10 is movably installed at the intersection of the channel 4 1101 of the nozzle seat 2 11 and the channel 3 1202 of the injection seat 12, which can ensure the needle valve 1 5 to move up and down and the needle valve 2 10 to move left and right.
[0028] Among them, the shooting seat 12 is connected to the nozzle seat 11 by screws, the shooting seat 12 is connected to the storage barrel 8 by screws, and the plunger 13 is slidingly and sealingly connected to the inner hole of the storage barrel 8, which can ensure that the plunger 13 slides flexibly in the inner wall of the storage barrel 8.
[0029] Among them, the shooting seat 12 is provided with pilot holes 1201 located on the periphery of channel three 1202, and there are seven pilot holes 1201. The nozzle receiving seat 2 11 is located at one end of the shooting seat 12 and is provided with a pressure groove 1102 on the periphery of channel four 1101. The inner cavity of the storage barrel 8 is connected with the pressure groove 1102 through the pilot holes 1201. The pilot holes 1201 can achieve avoidance of channel two 601.
[0030] The working principle of the present invention is as follows: when storing materials into the storage barrel 8, the molten rubber opens the needle valve 15 under the rotation of the extrusion screw 2, and the channel 14 of the melt glue shooting seat 3 is connected with the channel 2 601 of the melt glue connection seat 6 through the material groove 502. Under the action of the molten rubber, the needle valve 10 is pushed to move left, and the sealing mating surface 1001 of the needle valve 10 is tightly attached to the inner wall of the internal channel 4 1101 of the nozzle connection seat 2 11, and the channel 4 1101 of the nozzle connection seat 2 11 is closed, and the rubber cannot overflow. The molten rubber reaches the storage barrel 8 through the internal channel 3 1202 of the shooting seat 12, pushing the plunger 13 to move backward, and the storage of materials in the storage barrel 8 is completed; when shooting, the plunger 13 moves left, and the pressure in the storage barrel 8 is gradually built up. When it reaches a certain value, the needle valve 15 moves up, and the tapered mating surface 501 of the needle valve 15 is in contact with the internal channel 1101 of the melt glue shooting seat 3. The inner wall of the injection seat 12 is tightly attached to the channel 1201, and the channel 1202 of the melt injection seat 3 is closed. The molten rubber in the storage barrel 8 will not flow back into the melt rubber barrel 1, forming a backflow and causing insufficient injection volume and injection accuracy deviation; at the same time, the molten rubber in the storage barrel 8, when reaching a certain pressure, first reaches the pressure-bearing groove 1102 on the nozzle seat 11 through the pilot hole 1201 on the injection seat 12 to establish pressure. Under this pressure, the pressure in the lamination groove pushes the sealing mating surface 1001 of the needle valve 10 to be tightly attached to the inner wall of the internal channel 1202 of the injection seat 12. Because the sealing mating surfaces 1001 on both sides of the needle valve 10 reach a dynamic balance under the pressure of the same storage barrel 8 and the plunger 13, the needle valve 10 is suspended in the middle position of the left and right, so that the channel of the injection seat 12 and the channel of the nozzle 7 seat are connected, thereby completing the injection.
[0031] In the above invention scheme, the needle valve 1 5 in the channel of the melt glue injection seat 3 and the melt glue connection seat 6; the needle valve 2 10 in the channel of the injection seat 12 and the nozzle 7 connection seat, when the material is stored in the storage barrel 8 and the material in the storage barrel 8 is ejected under the action of the plunger 13, the needle valve 1 5 and the needle valve 2 10 respectively complete the opening and closing control of the storage of the storage barrel 8 and the ejection of the plunger 13 under the action of the pilot hole 1201, the material passing groove 502, and the pressure groove 1102, so as to In order to achieve accurate control of material storage and injection, the needle valve 1 5 is installed in the channels of the melt injection seat 3 and the melt connection seat 6; the needle valve 2 10 is installed in the channels of the injection seat 12 and the nozzle connection seat 2 11. The needle valve 1 5 and the needle valve 2 10 are mutually related in opening and closing, so that the molten rubber in the storage barrel 8 will not flow back into the melt barrel 1, resulting in insufficient injection volume and injection accuracy deviation, thereby ensuring that the melt and injection accuracy of the injection molding machine are more accurate;
[0032] By processing the pressure groove 1102 and the pilot hole 1201 on the end faces of the melt seat 6, the injection seat 12 and the nozzle seat 2 11, the structure is simple and the cost is low. The opening of the needle valve 1 5 and the needle valve 2 10 is based on the pilot principle of the hydraulic oil valve, which is efficient, and the opening and closing process of the needle valve 1 5 and the needle valve 2 10 is stable, thereby extending the service life of the mechanism.
[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A material storage switch mechanism for a large injection molding machine, comprising a melt cylinder (1) and an extrusion screw (2), characterized in that: The extrusion screw (2) is arranged inside the melt glue cylinder (1); a melt glue injection seat (3) is arranged at one end of the melt glue cylinder (1); an L-shaped channel (4) is integrally formed inside the melt glue injection seat (3); a needle valve (5) is arranged at the lower part of the melt glue injection seat (3); a melt glue connection seat (6) is arranged at the bottom of the melt glue injection seat (3); a material injection seat (12) is arranged below the melt glue connection seat (6); a nozzle connection seat (11) is arranged at one end of the material injection seat (12); ), a nozzle seat 1 (9) is provided on one side of the nozzle seat 2 (11), a nozzle (7) is mounted on the nozzle seat 1 (9), a material storage barrel (8) is provided at the other end of the material shooting seat (12), a plunger (13) is provided inside the material storage barrel (8), a channel 3 (1202) is provided inside the material shooting seat (12), a channel 2 (601) is provided inside the melt glue seat (6), and a channel 4 (1101) is provided inside the nozzle seat 2 (11); The needle valve one (5) comprises a material passing groove (502) provided at the bottom end of the outer wall of the needle valve one (5) and a tapered mating surface (501) integrally formed with the upper periphery of the needle valve one (5) and mating with the internal channel one (4) of the melt injection seat (3); the needle valve two (10) comprises a sealing mating surface (1001) integrally formed on one side of the needle valve two (10) and mating with the internal channel three (1202) of the injection seat (12); The material shooting seat (12) is connected to the second nozzle seat (11) by screws, the material shooting seat (12) is connected to the material storage barrel (8) by screws, and the plunger (13) is connected to the inner hole of the material storage barrel (8) in a sliding and sealing manner; The shooting seat (12) is provided with a pilot hole (1201) located on the periphery of the channel three (1202), and there are seven pilot holes (1201). The nozzle seat (11) is located at one end of the shooting seat (12) and is provided with a pressure groove (1102) located on the periphery of the channel four (1101). The inner cavity of the storage barrel (8) is connected to the pressure groove (1102) through the pilot hole (1201), and the channel four (1101) is concentric with the channel three (1202), and the melt adhesive seat (6 ) is connected with the channel one (4) and the channel three (1202), and the needle valve two (10) is movably installed at the intersection of the channel four (1101) of the nozzle seat two (11) and the channel three (1202) of the injection seat (12), and the two sealing mating surfaces (1001) on the needle valve two (10) are in close contact with and separated from the inner wall of the channel three (1202) or the channel four (1101), respectively realizing the closing and opening of the channel three (1202) and the channel four (1101).
2. The material storage switch mechanism for a large injection volume injection molding machine according to claim 1, characterized in that: The extrusion screw (2) is rotatably connected to the melt glue cylinder (1), and the melt glue injection seat (3) is connected to the melt glue cylinder (1) via screws.
3. The material storage switch mechanism for a large injection volume injection molding machine according to claim 1, characterized in that: The melt glue connection seat (6) is connected to the melt glue injection seat (3) and the injection seat (12) by means of screws.
4. The material storage switch mechanism for a large injection volume injection molding machine according to claim 1, characterized in that: The nozzle (7) is connected to the nozzle seat 1 (9) by threaded sealing, and the nozzle seat 1 (9) is connected to the nozzle seat 2 (11) by screws.
5. The material storage switch mechanism for a large injection volume injection molding machine according to claim 1, characterized in that: The needle valve 1 (5) is movably arranged at the intersection of the channel 1 (4) of the melt glue injection seat (3) and the channel 2 (601) of the melt glue connection seat (6).