An injection molding machine having a common positioning reference

Abstract

The application relates to the field of injection molding machines, and discloses an injection molding machine with the same positioning reference, which comprises a base frame, an extrusion module, a fixed mold plate, a movable mold plate and a driving assembly. A guide rail assembly is fixedly connected to the tabletop of the base frame. The fixed mold plate is fixedly connected to the middle part of the guide rail assembly. The movable mold plate is slidably connected to the guide rail assembly and located at one side of the fixed mold plate. The driving assembly is fixedly connected to the guide rail assembly and located at one side of the fixed mold plate, used for pushing the movable mold plate and the fixed mold plate to open and close. The extrusion module is slidably connected to the guide rail assembly and located at the other side of the fixed mold plate. The extrusion module, the fixed mold plate, the movable mold plate and the driving assembly are all arranged on the guide rail assembly, so that the main component modules have the same positioning reference, the calibration and debugging during installation are facilitated, the misalignment caused by different positioning references during use is avoided, and the main component modules can better and continuously maintain the cooperation precision during use.

Description

Technical Field

[0001] This invention relates to the field of injection molding machines, and more specifically, to an injection molding machine having a common positioning reference. Background Technology

[0002] The basic structure of existing injection molding machines includes a molding module and an extrusion module. The molding module mainly includes a fixed platen, a moving platen, and a drive assembly for opening and closing the moving platen and the fixed platen. In existing injection molding machines, the fixed platen is fixed on the base frame, and the moving platen and the fixed platen are often only connected by guide pillars. The drive assembly and the extrusion module are fixed at different positions on the base frame and the fixed platen. In some injection molding machines, the extrusion module is even fixed on a different base frame than the molding module. As a result, each major component module of the existing injection molding machine has its own positioning reference, which makes calibration and adjustment during installation more troublesome. At the same time, during use, the continuous movement and vibration of each component can easily cause misalignment between the different positioning references, resulting in a decrease in the fitting accuracy between the component modules. Summary of the Invention

[0003] To address the shortcomings of the prior art, this invention provides an injection molding machine with a common positioning reference that can better maintain the matching accuracy of the main component modules.

[0004] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0005] An injection molding machine with a common positioning reference includes a base frame, an extrusion module, a fixed template, a moving template, and a drive assembly. A guide rail assembly is fixedly connected to the platform of the base frame. The fixed template is fixedly connected to the middle of the guide rail assembly. The moving template is slidably connected to the guide rail assembly and located on one side of the fixed template. The drive assembly is fixedly connected to the guide rail assembly and located on one side of the fixed template, and is used to push the moving template to open and close with the fixed template. The extrusion module is lockably slidably connected to the guide rail assembly and located on the other side of the fixed template.

[0006] Furthermore, the guide rail assembly has multiple threaded holes evenly arranged along its own length at the location of the extrusion module, and the extrusion module is detachably locked to the guide rail assembly by screws.

[0007] Furthermore, the bottom of the platform of the base frame is fixedly connected to two longitudinal beams arranged parallel to each other along the length of the base frame, and the guide rail assembly includes two guide rails arranged parallel to each other along the length of the base frame, with the two guide rails coinciding with the two longitudinal beams respectively in a direction perpendicular to the platform of the base frame.

[0008] Furthermore, the extrusion module includes a base that can be locked and slidably connected to the guide rail assembly, a barrel disposed on the base, a heating element wrapped around the barrel, a spiral blade disposed inside the barrel, a driving element for driving the spiral blade to rotate, and a hopper for feeding material. Multiple heat pipes are fixedly connected to the spiral blade and are evenly arranged along the spiral blade to transfer the heat of the heating element to the spiral blade shaft.

[0009] Furthermore, the heat pipe body is attached to the helical blade, with the hot end of the heat pipe close to the outer edge of the helical blade and the cold end close to the axis of rotation of the helical blade.

[0010] Furthermore, each of the spiral blades is fixedly connected to a metal fixing strip with a high thermal conductivity on both sides of each heat pipe to form a clamp for the heat pipe.

[0011] Furthermore, the fixing strip is attached to the helical blade, and the inner end of the fixing strip is fixedly connected to the rotating shaft of the helical blade.

[0012] Furthermore, a metal fixing block with a high thermal conductivity is fixedly connected to the outer edge of the spiral blade to press the heat pipe and the fixing strip together.

[0013] Furthermore, the heat pipe, fixing strip and fixing block are provided on both sides of the spiral blade along the thickness direction at the location of the fixing block, and the two corresponding fixing blocks located on both sides of the spiral blade are fixed to the spiral blade by screw locking.

[0014] In summary, the present invention has the following advantages: The present invention sets a guide rail assembly on the base frame and places the extrusion module, fixed template, moving template and drive assembly on the guide rail assembly, so that each major component module is set with the guide rail assembly as the reference. Since they have the same positioning reference, it is convenient to calibrate and debug during installation, and at the same time avoids the problem of misalignment that is easy to occur when different positioning references are used. Thus, each major component module can maintain good and continuous fitting accuracy during use. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the bottom surface of the base frame of the present invention;

[0017] Figure 3 This is a cross-sectional perspective view of the extrusion module of the present invention.

[0018] Figure 4 This is a three-dimensional structural diagram of the helical blade of the present invention.

[0019] Reference numerals: 1. Base frame; 11. Longitudinal beam; 2. Extrusion module; 21. Base; 22. Barrel; 23. Heating element; 24. Spiral blade; 25. Drive element; 26. Hopper; 3. Fixed template; 4. Moving template; 5. Drive assembly; 6. Guide rail assembly; 61. Threaded hole; 7. Heat pipe; 8. Fixing strip; 9. Fixing block. Detailed Implementation

[0020] To make the technical problems, solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to that other component.

[0022] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] like Figures 1 to 4 The injection molding machine shown has the following main structure: a base frame 1, an extrusion die 2, a fixed die 3, a moving die 4, a drive assembly 5, and a guide rail assembly 6. The guide rail assembly 6 includes two guide rails, which are fixedly connected to the platform of the base frame 1 in a parallel direction along its length. The two guide rails are made of high-strength materials such as stainless steel or carbon steel to ensure that they are not easily deformed.

[0025] like Figure 2As described above, two longitudinal beams 11 are fixedly connected to the bottom of the platform of the base frame 1. These two longitudinal beams 11 are arranged parallel to each other along the length of the base frame 1. In the vertical direction of the platform of the base frame 1, the two guide rails and the two longitudinal beams 11 overlap. The length of the longitudinal beams 11 is basically the same as the length of the guide rails, so that the entire guide rail can be well and evenly supported by the longitudinal beams 11, and the overall strength is further improved to prevent the guide rails from deforming.

[0026] Two guide rails provide sufficient support to serve as a continuous and effective reference. The base frame 1, extrusion module 2, fixed template 3, moving template 4, and drive assembly 5 are all mounted on these two guide rails, ensuring that these main component modules are set based on the same reference. Specifically, the fixed template 3 is fixedly connected to the middle of the guide rail. The moving template 4 is slidably connected to the guide rail and located on one side of the fixed template 3. The drive assembly 5 is a cylinder, fixedly connected to the guide rail and located on one side of the fixed template 3. The moving template 4 is located between the fixed template 3 and the drive assembly 5, and is driven by the drive assembly 5 to open and close with the fixed template 3. Multiple threaded holes 61 are evenly distributed along the length of the guide rail on the other side of the fixed template 3. The extrusion module 2 is detachably and lockably slidably connected to the guide rail assembly 6 by screws and is located on the other side of the fixed template 3.

[0027] like Figure 3 and Figure 4 As shown, the extrusion module 2 includes a base 21, a barrel 22 mounted on the base 21, a heating element 23 surrounding the barrel 22, a spiral blade 24 disposed inside the barrel 22, a drive element 25 for rotating the spiral blade 24, and a hopper 26 for feeding material. The base 21 is slidably connected to a guide rail by screws. The drive element 25 is preferably a motor. Multiple heat pipes 7 are fixedly connected to the spiral blade 24 and evenly arranged along the spiral blade 24, such as... Figure 4 As shown, three heat pipes 7 are evenly arranged within one lead of the spiral blade 24. Of course, the number can be more, depending on actual needs. The body of the heat pipe 7 is attached to the spiral blade 24, with the hot end of the heat pipe 7 close to the outer edge of the spiral blade 24 and the cold end close to the axis of rotation of the spiral blade 24.

[0028] Heat pipe 7 is a mature existing technology. It has a vacuum-sealed metal shell filled with a liquid working fluid. When the hot end of heat pipe 7 is heated, the liquid working fluid inside evaporates, carrying away heat. This heat is the latent heat of vaporization of the liquid working fluid. The vapor flows from the central channel to the cold end of heat pipe 7, condenses into liquid, and releases latent heat. Under the action of capillary force, the liquid flows back to the hot end. Heat pipe 7 has strong thermal conductivity. By setting heat pipe 7, the heat from heating element 23 can be quickly transferred to the shaft of spiral blade 24.

[0029] The existing injection molding machine's barrel 22 and spiral blades 24 are generally small in diameter and long in length, forming a slender shape, mainly to ensure that the powder inside can be fully heated by the heating element 23. However, the excessively slender barrel 22 experiences increased swaying during operation, which can easily affect the fitting accuracy of components over time. For example... Figure 3 and Figure 4 In this embodiment, by providing a heat pipe 7 on the spiral blade 24, the heat from the heating element 23 is quickly transferred to the rotation axis of the spiral blade 24, thereby rapidly heating the powder inside the barrel 22. Therefore, in this embodiment, the overall diameter of the barrel 22 and the spiral blade 24 can be set to be larger and the length shorter, while still achieving the purpose of heating the powder. At the same time, the overall strength of the barrel 22 can be increased, the shaking amplitude during operation can be reduced, and the fitting accuracy of the components can be maintained continuously.

[0030] Each spiral blade 24 has a high thermal conductivity metal fixing strip 8 fixedly connected to both sides of each heat pipe 7 to clamp the heat pipe 7. The fixing strip 8 is attached to the spiral blade 24, and its inner end is fixedly connected to the rotating shaft of the spiral blade 24. By setting the fixing strip 8, the heat on the heat pipe 7 can be conducted away more quickly and transferred to the spiral blade 24 and the powder, improving the overall thermal conductivity and better fixing the heat pipe 7 to prevent it from falling off. When the spiral blade 24 rotates, due to the thermal conductivity of the heat pipe 7 and the spiral blade 24, the powder near the surface of the spiral blade 24 has a higher temperature and melts faster. The fixing strip 8 can stir the powder near the surface to mix it with the powder in other areas, making the overall powder melting more uniform and faster.

[0031] Additionally, refer to Figure 4 The spiral blade 24 has a high thermal conductivity metal fixing block 9 fixedly connected to its outer edge. The spiral blade 24 has heat pipes 7, fixing strips 8, and fixing blocks 9 on both sides along its thickness direction where the fixing blocks 9 are located. Two corresponding fixing blocks 9 on each side of the spiral blade 24 are clamped and fixed to the spiral blade 24 by screws. The fixing blocks 9 better compress the heat pipes 7 and fixing strips 8, making the fixation more secure. The area of ​​the fixing block 9 close to the inner surface of the barrel 22 is much larger than the area of ​​the outer edge of the spiral blade 24 at that location, greatly enhancing its ability to absorb heat transferred from the heating element 23 to the barrel 22. Furthermore, since the inner surface temperature of the barrel 22 is higher, the powder near the inner surface has a higher temperature and melts faster. The fixing block 9 agitates the powder near the inner surface, mixing it with the powder from other areas, resulting in more uniform and faster overall powder melting.

[0032] The above embodiments are merely explanations of the present invention and are not intended to limit the present invention. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. An injection molding machine having a common positioning reference, comprising a base frame, an extrusion module, a fixed template, a moving template, and a drive assembly, characterized in that: A guide rail assembly is fixedly connected to the platform of the base frame. The fixed template is fixedly connected to the middle of the guide rail assembly. The moving template is slidably connected to the guide rail assembly and located on one side of the fixed template. The drive assembly is fixedly connected to the guide rail assembly and located on one side of the fixed template, used to push the moving template to open and close with the fixed template. The extrusion module is lockably slidably connected to the guide rail assembly and located on the other side of the fixed template. The extrusion module includes a base lockably slidably connected to the guide rail assembly, a barrel disposed on the base, a heating element wrapped around the barrel, a spiral blade disposed inside the barrel, a drive element for driving the spiral blade to rotate, and a hopper for feeding material. The spiral blade is fixed with... Multiple heat pipes, evenly arranged along the spiral blades, are connected to transfer heat from the heating element to the axis of rotation of the spiral blades. The body of each heat pipe is attached to the spiral blades, with the hot end of the heat pipe close to the outer edge of the spiral blades and the cold end close to the axis of rotation. A metal fixing strip with high thermal conductivity is fixedly connected to both sides of each heat pipe on the spiral blades to clamp the heat pipes. The metal fixing strip is attached to the spiral blades, and the inner end of the metal fixing strip is fixedly connected to the axis of rotation of the spiral blades. A metal fixing block with high thermal conductivity is fixedly connected to the outer edge of the spiral blades to press the heat pipes and the metal fixing strips together.

2. The injection molding machine with the same positioning reference according to claim 1, characterized in that: The guide rail assembly has multiple threaded holes evenly arranged along its own length at the location of the extrusion module, and the extrusion module is detachably locked to the guide rail assembly by screws.

3. An injection molding machine with the same positioning reference as described in claim 1, characterized in that: The bottom of the platform of the base frame is fixedly connected to two longitudinal beams arranged parallel to the length of the base frame. The guide rail assembly includes two guide rails arranged parallel to the length of the base frame. The two guide rails coincide with the two longitudinal beams respectively in a direction perpendicular to the platform of the base frame.

4. An injection molding machine with the same positioning reference according to claim 1, characterized in that: The spiral blade is provided with heat pipes, metal fixing strips and metal fixing blocks on both sides along the thickness direction at the location of the metal fixing blocks, and the two corresponding metal fixing blocks on both sides of the spiral blade are fixed to the spiral blade by screws.

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