Injection molding machine heating device convenient to maintain

Abstract

The utility model provides an injection molding machine heating device convenient to maintain, which belongs to the technical field of injection molding machine heating components and comprises a material pipe, the upper end of the material pipe is a first heating section, the lower end of the material pipe is a second heating section, and a chemical material heating component is sleeved outside the first heating section. A heating cavity is formed in the second heating section, a temperature rising and heating assembly is installed in the heating cavity, the material melting and heating assembly comprises installation clamping plates on the upper side and the lower side and an internal heating wire, and a spiral heat conduction layer used for making contact with the heating wire is arranged on the outer wall of the first heating section. The heating assembly comprises a mounting seat and a plurality of electric heating tubes, a plurality of groups of mounting grooves are formed in the mounting seat, heat insulation layers are arranged on the inner walls of the mounting grooves, and the electric heating tubes are arranged in the mounting grooves; according to the utility model, the problems that the heating element is inconvenient to replace and the heating efficiency is reduced due to fatigue loss of the heating element can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molding machine heating components, and in particular relates to a maintenance-friendly heating device for injection molding machines. Background Art

[0002] Injection molding, as an important plastics processing method, is widely used in the manufacturing industry. The performance and efficiency of injection molding machines directly impact the quality and production efficiency of plastic products. The heating device of an injection molding machine is a key component, primarily used to heat plastic pellets to a molten state and ensure proper fluidity and temperature uniformity during the injection molding process.

[0003] In current injection molding machine heating systems, a single heating section or simple heating structure is typically used. However, this traditional design presents numerous technical challenges. Firstly, the single heating section makes it difficult to precisely control the plastic's melting process and flow rate, which can lead to uneven melting and compromise product quality. For example, some plastic may not fully melt, resulting in defects in the molded product, such as bubbles, voids, or uneven wall thickness. Secondly, the heating elements of traditional heating systems are often difficult to remove and replace. Once a malfunction or damage occurs, maintenance becomes tedious, time-consuming, and labor-intensive. Furthermore, over time, the performance of the heating elements gradually degrades, and the inability to easily and promptly replace them reduces heating efficiency and increases energy consumption. Utility Model Content

[0004] In view of this, the utility model provides an injection molding machine heating device that is easy to maintain and can solve the problem that it is inconvenient to replace the heating element and the fatigue loss of the heating element will lead to reduced heating efficiency.

[0005] The utility model is achieved in this way:

[0006] The utility model provides a heating device for an injection molding machine which is easy to maintain, comprising a material pipe, wherein the upper end of the material pipe is a first heating section, and the lower end is a second heating section, the outer sleeve of the first heating section is installed with a chemical material heating component, the interior of the second heating section is provided with a heating chamber, a temperature rising heating component is installed inside the heating chamber, the chemical material heating component comprises mounting splints on upper and lower sides and an internal heating wire, the outer wall of the first heating section is provided with a spiral heat-conducting layer for contacting the heating wire, the temperature rising heating component comprises a mounting seat and a plurality of electric heating tubes, the mounting seat is provided with a plurality of groups of mounting grooves, the inner wall of the mounting groove is provided with a heat insulating layer, the electric heating tube is arranged inside the mounting groove, the inner wall of the heating chamber is provided with a strip-shaped heat-conducting layer for contacting the electric heating tube corresponding to the position of the mounting groove, and the mounting seat is detachably connected to the heating chamber.

[0007] The utility model provides a heating device for an injection molding machine that is easy to maintain, and has the following technical effects: a material pipe is provided as a channel for the flow and heating of plastic granule raw materials; a first heating section is provided in combination with a material heating component to preliminarily heat and melt the plastic granules, in preparation for subsequent further heating and flow; a second heating section is provided in combination with a temperature-raising heating component to increase the heating power through the electric heating tube, reduce the viscosity of the melted plastic granules, and increase the flow rate to meet the requirements of the injection molding process.

[0008] On the basis of the above technical solution, the following improvements can be made to the heating device of an injection molding machine that is easy to maintain in the present invention:

[0009] In which, the interior of the mounting splint is provided with a spiral groove adapted to the spiral heat-conducting layer, and the heating wire includes a first heating wire and a second heating wire, which are respectively arranged in the spiral groove in the mounting splint on the upper and lower sides, and an insulation layer is also provided on the inner wall of the spiral groove away from the spiral heat-conducting layer.

[0010] The beneficial effects of adopting the above-mentioned improvement scheme are: by setting up a mounting splint to fix and protect the internal heating wire, it is ensured that the heating wire is in stable contact with the spiral heat-conducting layer of the material tube, and the heating efficiency is improved by increasing the contact area.

[0011] Furthermore, a group of mounting grooves are respectively provided at both ends of the mounting clamping plate, and a clamping protrusion is provided on the outer wall of the first heating section corresponding to the position of the mounting groove, and the clamping protrusion is used to fix the position of the mounting clamping plate.

[0012] The beneficial effect of adopting the above-mentioned improvement scheme is: by providing the installation groove and the corresponding latching protrusion, it is convenient to install or disassemble, thereby facilitating the maintenance and replacement of the heating wire.

[0013] Furthermore, the mounting plate includes an upper mounting plate and a lower mounting plate, and both ends of the upper mounting plate and the lower mounting plate are detachably connected by bolts.

[0014] Furthermore, a hemispherical heat-conducting block is provided at the top of the heating chamber, the heating chamber and the hemispherical heat-conducting block are an integrated structure, and the bottom end of the hemispherical heat-conducting block contacts the top end of the electric heating tube.

[0015] The beneficial effects of adopting the above-mentioned improvement scheme are: by setting up a hemispherical heat-conducting block and utilizing the bottom end to contact one end of the electric heating tube for heat conduction, the thermoplastic at the junction of the first heating section and the second heating section is quickly softened, its viscosity is reduced, and its flow rate is increased.

[0016] Furthermore, an internal thread is provided on the inner wall of the bottom end of the heating chamber, the bottom end of the mounting seat is movably connected to a fastening chassis, and an external thread is provided on the outer wall of the fastening chassis.

[0017] Furthermore, the mounting base is fixedly mounted to the heating chamber via corresponding threads of the fastening chassis at the bottom end.

[0018] Furthermore, the bottom end of the temperature-raising heating component is fixedly connected to a fixed shaft, and a rotation groove is provided on the fastening chassis.

[0019] Furthermore, the bottom end of the fixed shaft is rotatably connected to the rotating groove through a bearing.

[0020] The beneficial effect of adopting the above-mentioned improvement scheme is that by designing the rotation connection of the fixed shaft, the fastening chassis is allowed to rotate relatively when the mounting seat is disassembled and installed, which facilitates operation.

[0021] Furthermore, a raised handle is provided at the bottom end of the fastening chassis for facilitating twisting of the fastening chassis.

[0022] The beneficial effect of adopting the above-mentioned improvement scheme is that by providing the raised handle, it is convenient for the knob to be fastened to the chassis, making installation and disassembly easier.

[0023] Compared with the prior art, the beneficial effects of the injection molding machine heating device provided by the utility model, which is easy to maintain, are as follows: by setting a material pipe as a channel for the flow and heating of plastic particle raw materials; by setting a first heating section in conjunction with a material heating component, the plastic particles are preliminarily heated and melted to prepare for subsequent further heating and flow; by setting a second heating section in conjunction with a temperature rising heating component, the heating power is increased through the electric heating tube, the viscosity of the melted plastic particles is reduced, and the flow rate is increased to meet the requirements of the injection molding process; by setting an installation splint for fixing and protecting the internal heating wire, ensuring that the heating wire is in stable contact with the spiral heat-conducting layer of the material pipe, and improving the heating efficiency by increasing the contact area; by setting an installation splint for fixing and protecting the internal heating wire, ensuring that the heating wire is in stable contact with the spiral heat-conducting layer of the material pipe, and improving the heating efficiency by increasing the contact area; by setting an installation groove and a corresponding cam for easy installation or disassembly, it is convenient to maintain and replace the heating wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 This is a schematic diagram of the structure of a heating device for an injection molding machine that is easy to maintain;

[0026] Figure 2 A schematic diagram of a fastening chassis for a heating device of an injection molding machine for easy maintenance;

[0027] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0028] 10. Material pipe; 11. First heating section; 12. Second heating section; 13. Chemical material heating assembly; 14. Heating chamber; 15. Temperature rising heating assembly; 16. Mounting splint; 17. Heating wire; 18. Spiral heat conducting layer; 19. Mounting seat; 20. Electric heating tube; 21. Mounting groove; 22. Heat insulation layer; 23. Strip heat conducting layer; 24. Hemispherical heat conducting block; 25. Fastening chassis; 26. Fixed shaft. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0030] like Figure 1 2 is an embodiment of a heating device for an injection molding machine that is easy to maintain provided by the present invention. In this embodiment, the device comprises a material pipe 10, wherein the upper end of the material pipe 10 is a first heating section 11, and the lower end is a second heating section 12. A material heating component 13 is installed on the outer sleeve of the first heating section 11, and a heating cavity 14 is provided inside the second heating section 12. A temperature-raising heating component 15 is installed inside the heating cavity 14. The material heating component 13 comprises mounting clamps 16 on the upper and lower sides and an internal heating Wire 17, the outer wall of the first heating section 11 is provided with a spiral heat-conducting layer 18 for contacting the heating wire 17, the temperature rising heating component 15 includes a mounting seat 19 and a plurality of electric heating tubes 20, the mounting seat 19 is provided with a plurality of mounting grooves 21, the inner wall of the mounting groove 21 is provided with a heat-insulating layer 22, the electric heating tube 20 is arranged inside the mounting groove 21, and the inner wall of the heating chamber 14 is provided with a strip-shaped heat-conducting layer 23 for contacting the electric heating tube 20 corresponding to the mounting groove 21. The mounting seat 19 is detachably connected to the heating chamber 14.

[0031] The upper end of the first heating section 11 of the material pipe 10 is connected to the plastic particle feeding mechanism, and the lower end of the second heating section 12 is connected to the discharge head.

[0032] Among them, contact temperature measuring probes are provided on both the spiral heat-conducting layer 18 and the strip heat-conducting layer 23 for detecting the heating temperature, so that the operator can promptly inspect and maintain the equipment according to the temperature changes.

[0033] During use, the heating wire 17 is spirally fixed to the outer wall of the first heating section 11 through the mounting clamps 16 on both sides, and contacts the spiral heat-conducting layer 18, so as to preliminarily heat and melt the plastic particles in the material tube 10; the thermoplastic after the preliminary melting contacts the hemispherical heat-conducting block 24 of the second heating section 12, and is further provided with high-power heating through the electric heating tube 20, thereby reducing the viscosity of the soft plastic, increasing its flow rate in the material tube 10, and outputting it through the channel beside the second heating section 12; when the discharge speed slows down, or the heating temperature is detected to be lower than normal, the chemical heating assembly 13 and the heating chamber 14 need to be inspected and maintained, and the heating wire 17 can be replaced by disassembling the mounting clamp 16, and the mounting seat 19 can be removed by rotating the fastening chassis 25, and the electric heating tube 20 can be replaced accordingly, which is convenient for inspection and maintenance.

[0034] Among them, in the above technical solution, a spiral groove adapted to the spiral heat-conducting layer 18 is provided inside the mounting splint 16, and the heating wire 17 includes a first heating wire and a second heating wire, which are respectively arranged in the spiral grooves in the mounting splint 16 on the upper and lower sides. An insulating layer 22 is also provided on the inner wall of the spiral groove away from the spiral heat-conducting layer 18.

[0035] Furthermore, in the above technical solution, a group of mounting grooves are respectively provided at both ends of the mounting clamp 16 , and a latch is provided on the outer wall of the first heating section 11 corresponding to the mounting groove position, and the latch is used to fix the position of the mounting clamp 16 .

[0036] Furthermore, in the above technical solution, the mounting plate 16 includes an upper mounting plate and a lower mounting plate, and both ends of the upper mounting plate and the lower mounting plate are detachably connected by bolts.

[0037] Furthermore, in the above technical solution, a hemispherical heat conductive block 24 is provided at the top of the heating chamber 14 , the heating chamber 14 and the hemispherical heat conductive block 24 are an integrated structure, and the bottom end of the hemispherical heat conductive block 24 contacts the top end of the electric heating tube 20 .

[0038] Furthermore, in the above technical solution, an internal thread is provided on the inner wall of the bottom end of the heating chamber 14 , the bottom end of the mounting seat 19 is movably connected to a fastening chassis 25 , and an external thread is provided on the outer wall of the fastening chassis 25 .

[0039] Furthermore, in the above technical solution, the mounting seat 19 is fixedly mounted to the heating chamber 14 via the corresponding threads of the fastening chassis 25 at the bottom end.

[0040] Furthermore, in the above technical solution, the bottom end of the temperature-raising heating component 15 is fixedly connected to a fixed shaft 26 , and a rotation groove is provided on the fastening chassis 25 .

[0041] Furthermore, in the above technical solution, the bottom end of the fixed shaft 26 is rotatably connected to the rotating groove through a bearing.

[0042] Furthermore, in the above technical solution, a protruding handle is provided at the bottom end of the fastening chassis 25 for facilitating twisting of the fastening chassis 25 .

[0043] Specifically, the principle of the present invention is: when in use, the heating wire 17 is spirally fixed to the outer wall of the first heating section 11 through the mounting clamps 16 on both sides, and contacts the spiral heat-conducting layer 18, which is used to preliminarily heat and melt the plastic particles in the material tube 10; the thermoplastic after the preliminary melt is in contact with the hemispherical heat-conducting block 24 of the second heating section 12, and further provides high-power heating through the electric heating tube 20, thereby reducing the viscosity of the soft plastic, increasing its flow rate in the material tube 10, and outputting it through the channel beside the second heating section 12; when the discharge speed slows down, or the heating temperature is detected to be lower than normal, the chemical heating assembly 13 and the heating chamber 14 need to be inspected and maintained, and the heating wire 17 can be replaced by disassembling the mounting clamp 16, and the mounting seat 19 can be removed by rotating the fastening chassis 25, and the electric heating tube 20 can be replaced accordingly, which is convenient for inspection and maintenance.

Claims

1. A heating device for an injection molding machine that is easy to maintain, comprising a material pipe (10), characterized in that: The upper end of the material tube (10) is a first heating section (11), and the lower end is a second heating section (12). The outer sleeve of the first heating section (11) is provided with a chemical material heating component (13). The interior of the second heating section (12) is provided with a heating chamber (14). The interior of the heating chamber (14) is provided with a temperature-raising heating component (15). The chemical material heating component (13) includes mounting clamps (16) on the upper and lower sides and an internal heating wire (17). The outer wall of the first heating section (11) is provided with a spiral screw for contacting the heating wire (17). The heating component (15) comprises a mounting seat (19) and a plurality of electric heating tubes (20), the mounting seat (19) is provided with a plurality of mounting grooves (21), the inner wall of the mounting groove (21) is provided with a heat insulating layer (22), the electric heating tubes (20) are arranged inside the mounting groove (21), the inner wall of the heating chamber (14) is provided with a strip-shaped heat conducting layer (23) for contacting the electric heating tubes (20) at a position corresponding to the mounting groove (21), and the mounting seat (19) is detachably connected to the heating chamber (14).

2. The maintenance-friendly heating device for an injection molding machine according to claim 1, characterized in that: The interior of the mounting splint (16) is provided with a spiral groove adapted to the spiral heat-conducting layer (18); the heating wire (17) includes a first heating wire and a second heating wire, which are respectively arranged in the spiral groove in the mounting splint (16) on the upper and lower sides; and a heat-insulating layer (22) is also provided on the inner wall of the spiral groove away from the spiral heat-conducting layer (18).

3. The maintenance-friendly heating device for an injection molding machine according to claim 2, characterized in that: A group of mounting grooves are respectively provided at both ends of the mounting clamping plate (16), and a clamping protrusion is provided on the outer wall of the first heating section (11) at a position corresponding to the mounting groove, and the clamping protrusion is used to fix the position of the mounting clamping plate (16).

4. The maintenance-friendly heating device for an injection molding machine according to claim 3, characterized in that: The mounting clamping plate (16) comprises an upper mounting clamping plate and a lower mounting clamping plate, and both ends of the upper mounting clamping plate and the lower mounting clamping plate are detachably connected via bolts.

5. The maintenance-friendly heating device for an injection molding machine according to claim 4, characterized in that: A hemispherical heat-conducting block (24) is provided at the top end of the heating chamber (14); the heating chamber (14) and the hemispherical heat-conducting block (24) are an integrated structure; and the bottom end of the hemispherical heat-conducting block (24) contacts the top end of the electric heating tube (20).

6. The maintenance-friendly heating device for an injection molding machine according to claim 5, characterized in that: An internal thread is provided on the inner wall of the bottom end of the heating chamber (14); a fastening chassis (25) is movably connected to the bottom end of the mounting seat (19); and an external thread is provided on the outer wall of the fastening chassis (25).

7. The maintenance-friendly heating device for an injection molding machine according to claim 6, characterized in that: The mounting seat (19) is fixedly mounted to the heating chamber (14) via corresponding threads of the fastening chassis (25) at the bottom end.

8. The maintenance-friendly heating device for an injection molding machine according to claim 7, characterized in that: The bottom end of the temperature-raising heating component (15) is fixedly connected to a fixed shaft (26), and a rotation groove is provided on the fastening chassis (25).

9. The maintenance-friendly heating device for an injection molding machine according to claim 8, characterized in that: The bottom end of the fixed shaft (26) is rotatably connected to the rotating groove via a bearing.

10. The maintenance-friendly heating device for an injection molding machine according to claim 9, characterized in that: The bottom end of the fastening chassis (25) is provided with a raised handle for facilitating twisting of the fastening chassis (25).

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