Hot melting mechanism for injection molding machine

Abstract

The utility model is suitable for the technical field of hot melting mechanisms of injection molding machines, and provides a hot melting mechanism for an injection molding machine. The electric heating pipe is embedded into the hot melting barrel; the hot melting barrel cover is fixed at the top of the hot melting barrel through a bolt; the motor is fixed at the central position of the top of the hot melting barrel cover through a bolt; the feeding hopper is fixed to the position, close to one side of the motor, of the top of the hot melting barrel cover through bolts; the hollow rotating rod is fixed at the output end of the motor; plastic in the center of the interior of the hot melting barrel can be centrifugally thrown out through an impeller structure formed by combining a top plate, a blade plate and a bottom plate, hot melting plastic moves from bottom to top along the inner side wall of the hot melting barrel through thrust brought by centrifugal force, and the contact time of the hot melting plastic and the inner side wall of the hot melting barrel is prolonged; and the hot-melted plastic moves from inside to outside and from bottom to top in the hot melting barrel, so that the plastic is fully and uniformly heated and hot-melted, and the overall hot melting effect is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of hot-melt mechanisms of injection molding machines, in particular to a hot-melt mechanism for injection molding machines. Background Art

[0002] Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it ejected and fill the mold cavity.

[0003] Plastic products need to be hot-melt treated before injection molding, but the existing injection molding machines have low hot-melt efficiency, and it often takes a lot of time to heat-dissolve the plastic material, reducing the efficiency of product manufacturing and processing. Although there are some equipment on the market that assists injection molding machines in hot-melting, the hot-melt mechanisms currently on the market still have the following shortcomings.

[0004] The overall heating uniformity of the hot melt mechanisms currently on the market is poor, and the location of the heating units of most hot melt mechanisms is mostly fixed at a certain position in the heating space. Therefore, the entire heating space cannot be covered, and comprehensive heating of the entire heating space cannot be achieved, resulting in temperature differences during the hot melting process of the injection molding raw materials, which will affect the overall hot melting effect.

[0005] Therefore, a hot melt mechanism for an injection molding machine is proposed. Utility Model Content

[0006] The utility model provides a hot melt mechanism for an injection molding machine, aiming to solve the above problems.

[0007] The utility model is implemented as follows: a hot melt mechanism for an injection molding machine comprises: a hot melt barrel; an electric heating tube embedded in the hot melt barrel; a hot melt barrel cover fixed to the top of the hot melt barrel by bolts; a motor fixed to the center of the top of the hot melt barrel cover by bolts; a feed hopper fixed to the top of the hot melt barrel cover by bolts near the motor; a hollow rotating rod fixed to the output end of the motor; a first flow guide cover welded to the bottom end of the hollow rotating rod; and a flow guide groove opened on the outer wall of the hollow rotating rod near the inner side of the first flow guide cover ; a top plate fixed to the bottom of the first air guide cover by bolts; a blade plate welded to the bottom of the top plate; a bottom plate welded to the bottom of the blade plate; a discharge pipe fixed to the central position of the bottom of the bottom plate by bolts; a pipe cover hinged to the bottom end of the discharge pipe; an inner cylinder welded to the bottom of the hot melt barrel; a partition plate welded between the outer wall of the inner cylinder and the inner wall of the hot melt barrel; a through groove opened on the outer wall of the inner cylinder near the blade plate; and a second material guide cover fixed to the top of the inner cylinder by bolts; a support leg fixed to the bottom of the hot melt barrel by bolts.

[0008] Preferably, a total of several electric heating tubes are provided, and the several electric heating tubes are coaxial with the center of the hot melt barrel and are evenly arranged in the inner interlayer of the hot melt barrel in the axial circumferential direction.

[0009] Preferably, the guide groove is communicated with the hollow rotating rod, and the hollow rotating rod is communicated with the space formed by the top plate, the blade plate and the bottom plate.

[0010] Preferably, the inner space cross-sections of the first flow guide shield and the second material guide shield are isosceles trapezoidal structures.

[0011] Preferably, the discharge pipe passes through the bottom of the hot melt barrel, and the outer side wall of the discharge pipe is precisely fitted with the hot melt barrel.

[0012] Preferably, there are four partitions in total, and the four partitions are symmetrically arranged on the outer side wall of the inner tube.

[0013] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0014] The impeller structure formed by the top plate, the blade plate and the bottom plate can centrifugally throw out the plastic in the central position inside the hot melt barrel, and use the thrust brought by the centrifugal force to move the hot melt plastic from bottom to top along the inner wall of the hot melt barrel, thereby increasing the contact time between the hot melt plastic and the inner wall of the hot melt barrel. The hot-melted plastic moves from the inside to the outside and from the bottom to the top inside the hot melt barrel, thereby achieving sufficient and uniform heating and hot melting of the plastic, realizing comprehensive heating of the entire heating space, ensuring the overall hot melting effect, and avoiding the problem that the plastic in the middle position inside the hot melt barrel is difficult to be effectively heated. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the hot melt barrel cover structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the inner cylinder structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the blade structure of the utility model.

[0019] In the figure: 1. hot melt barrel; 2. electric heating tube; 3. hot melt barrel cover; 4. motor; 5. feed hopper; 6. hollow rotating rod; 7. first guide cover; 8. guide groove; 9. top plate; 10. blade plate; 11. bottom plate; 12. discharge pipe; 13. pipe cover; 14. inner tube; 15. partition; 16. through groove; 17. second guide cover; 18. supporting legs. DETAILED DESCRIPTION

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] The utility model embodiment provides a hot melt mechanism for an injection molding machine, such as Figure 1-4 As shown, it includes a hot melt barrel 1, an electric heating tube 2 is embedded in the hot melt barrel 1, and the top of the hot melt barrel 1 is fixedly connected to the hot melt barrel cover 3 by bolts, the hot melt barrel cover 3 is fixedly connected to the motor 4 by bolts at the top center, and the top of the hot melt barrel cover 3 is fixedly connected to the feed hopper 5 by bolts at a side position close to the motor 4, the motor 4 is fixedly connected to a hollow rotating rod 6 through an output end on one side thereof, a first flow guide cover 7 is welded to the bottom end of the hollow rotating rod 6, a flow guide groove 8 is opened on the outer wall of one side of the hollow rotating rod 6 at an inner side position close to the first flow guide cover 7, a top plate 9 is fixedly connected to the bottom of the first flow guide cover 7 by bolts, a blade plate 10 is welded to the bottom of the blade plate 10, a bottom plate 11 is welded to the bottom of the bottom of the bottom plate 11 by bolts at the center of the bottom A discharge pipe 12 is fixedly connected, and the discharge pipe 12 passes through the bottom of the hot melt barrel 1, and the outer wall of the discharge pipe 12 is precisely fitted with the hot melt barrel 1, and a pipe cover 13 is hinged at the bottom of the discharge pipe 12, and an inner cylinder 14 is welded to the inner bottom of the hot melt barrel 1, and a partition 15 is welded between the outer wall of the inner cylinder 14 and the inner wall of the hot melt barrel 1, and there are four partitions 15 in total, and the four partitions 15 are symmetrically arranged on the outer wall of the inner cylinder 14, and a through groove 16 is opened on the outer wall of one side of the inner cylinder 14 near the outer side of the blade 10, and the top of the inner cylinder 14 is fixedly connected to the second material guide cover 17 by bolts, and the inner space cross-section of the first guide cover 7 and the second guide cover 17 is an isosceles trapezoidal structure, and three support legs 18 are fixed to the bottom of the hot melt barrel 1 by bolts at equal intervals.

[0023] It should be noted that, since the overall heating uniformity of the hot melt mechanism of the existing injection molding machine is not good, and the position of the heating unit of most hot melt mechanisms is mostly fixed at a certain position in the heating space, the entire heating space cannot be covered, and the overall heating space cannot be heated, resulting in a temperature difference in the process of hot melting the injection molding raw materials, which will affect the overall hot melting effect. The impeller structure formed by the top plate 9, the blade plate 10 and the bottom plate 11 in this embodiment can centrifugally throw out the plastic at the central position inside the hot melt barrel 1, and use the thrust brought by the centrifugal force to make the hot melt plastic move from bottom to top along the inner wall of the hot melt barrel 1, thereby increasing the contact time between the hot melt plastic and the inner wall of the hot melt barrel 1. The hot-melted plastic moves from the inside to the outside and from the bottom to the top inside the hot melt barrel 1, thereby achieving full and uniform heating and hot melting of the plastic, achieving comprehensive heating of the entire heating space, ensuring the overall hot melting effect, and avoiding the problem that the plastic at the middle position inside the hot melt barrel 1 is difficult to be effectively heated.

[0024] Specifically, in the present embodiment, the scheme mainly comprises a hot melt barrel 1, an inner barrel 14, a hollow rotating rod 6 and a blade 10. When the plastic required by the injection molding machine is hot-melted, the plastic is poured into the hot melt barrel 1 through the feed hopper 5, the electric heating tube 2 is powered on, and the heat in the hot melt barrel 1 heats and melts the plastic, and the plastic falls into the interior of the second material guide cover 17. Under the guidance of the second material guide cover 17, the plastic tilts downward to the interior of the first guide cover 7. At this time, the plastic is on the inner side of the inner barrel 14. Under the guidance of the first guide cover 7, the plastic tilts downward and passes through the guide groove 8 and enters the hollow rotating rod 6. The plastic falls into the space formed by the top plate 9, the blade 10 and the bottom plate 11. The motor 4 drives the hollow rotating rod 6 to rotate at a high speed through the output end on one side thereof. The top plate 9, the blade 10 and the bottom plate 11 on the hollow rotating rod 6 rotate synchronously at a high speed. The plastic is thrown out at high speed along the blade 10 under the action of centrifugal force, and the hot-melt plastic is brushed out through the through groove 16 under the action of centrifugal force, and the hot-melt plastic enters between the outer wall of the inner cylinder 14 and the inner wall of the hot-melt barrel 1, and the hot-melt plastic is fully in contact with the inner wall of the hot-melt barrel 1 to achieve further heating and hot-melting of the hot-melt plastic. The hot-melt plastic between the outer wall of the inner cylinder 14 and the inner wall of the hot-melt barrel 1 is squeezed by the hot-melt plastic that continuously enters subsequently, and the hot-melt plastic moves from bottom to top along the inner wall of the hot-melt barrel 1 to increase the contact time between the hot-melt plastic and the inner wall of the hot-melt barrel 1. The hot-melt plastic moves upward and enters the second material guide cover 17. The hot-melt plastic moves from the inside to the outside and from the bottom to the top in the hot-melt barrel 1 to achieve full and uniform heating and hot-melting of the plastic and ensure the overall hot-melt effect. After the plastic is fully hot-melted, the pipe cover 13 is opened, and the hot-melt plastic in the hot-melt barrel 1 is discharged through the discharge pipe 12.

[0025] In a further preferred embodiment of the present invention, Figure 1As shown, a total of several electric heating tubes 2 are provided, and the several electric heating tubes 2 are coaxial with the center of the hot melt barrel 1 and are evenly arranged in the inner interlayer of the hot melt barrel 1 in the axial circumferential direction.

[0026] In this embodiment, the plastic inside the hot melt barrel 1 can be evenly heated by the evenly distributed electric heating tubes 2, so that the heating heat is fully distributed on the inner wall of the hot melt barrel 1, thereby making the plastic evenly heated and melted.

[0027] In a further preferred embodiment of the present invention, Figure 2 and Figure 4 As shown, the guide groove 8 is connected to the hollow rotating rod 6, and the hollow rotating rod 6 is connected to the space formed by the top plate 9, the blade plate 10 and the bottom plate 11.

[0028] In this embodiment, the interconnected structure allows the plastic to pass through the guide groove 8 and then enter the hollow rotating rod 6 , and the plastic falls into the space formed by the top plate 9 , the blade plate 10 and the bottom plate 11 .

[0029] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0030] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0031] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0032] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A hot melt mechanism for an injection molding machine, characterized in that: include: Hot melt barrel (1); An electric heating tube (2) embedded in the hot melt barrel (1); and A hot melt barrel cover (3) fixed to the top of the hot melt barrel (1) by bolts; A motor (4) fixed at the center of the top of the hot melt barrel cover (3) by bolts; and A feed hopper (5) fixed by bolts to the top of the hot melt barrel cover (3) at a position close to the motor (4); A hollow rotating rod (6) fixed to the output end of the motor (4); a first air guide cover (7) welded to the bottom end of the hollow rotating rod (6); and A guide groove (8) is provided on the outer wall of the hollow rotating rod (6) near the inner side of the first guide cover (7); A top plate (9) fixed to the bottom of the first air deflector (7) by bolts; A blade plate (10) welded to the bottom of the top plate (9); A bottom plate (11) welded to the bottom of the blade (10); A discharge pipe (12) fixed at the central position of the bottom of the bottom plate (11) by bolts; A pipe cover (13) hinged to the bottom end of the discharge pipe (12); An inner cylinder (14) welded to the inner bottom of the hot melt barrel (1); A partition plate (15) welded between the outer wall of the inner cylinder (14) and the inner wall of the hot melt barrel (1); A through groove (16) is formed on the outer wall of the inner cylinder (14) at a position close to one side of the blade plate (10); and A second material guide cover (17) fixed to the top of the inner cylinder (14) by bolts; A support leg (18) is fixed to the bottom of the hot melt barrel (1) by bolts.

2. A hot melt mechanism for an injection molding machine as claimed in claim 1, characterized in that: A total of a plurality of electric heating tubes (2) are provided, and the plurality of electric heating tubes (2) are coaxial with the center of the hot melt barrel (1) and are evenly arranged in the inner interlayer of the hot melt barrel (1) in the axial circumferential direction.

3. A hot melt mechanism for an injection molding machine as claimed in claim 1, characterized in that: The guide groove (8) is connected to the hollow rotating rod (6), and the hollow rotating rod (6) is connected to a space formed by the top plate (9), the blade plate (10) and the bottom plate (11).

4. A hot melt mechanism for an injection molding machine as claimed in claim 1, characterized in that: The cross-section of the inner space of the first flow guide cover (7) and the second material guide cover (17) is an isosceles trapezoidal structure.

5. A hot melt mechanism for an injection molding machine as claimed in claim 1, characterized in that: The discharge pipe (12) passes through the bottom of the hot melt barrel (1), and the outer wall of the discharge pipe (12) is precisely fitted with the hot melt barrel (1).

6. A hot melt mechanism for an injection molding machine as claimed in claim 1, characterized in that: A total of four partitions (15) are provided, and the four partitions (15) are symmetrically arranged on the outer side wall of the inner tube (14).

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