Integrated glue melting structure of injection molding equipment and injection molding equipment comprising same

Abstract

The utility model discloses an integrated glue melting structure of injection molding equipment and the injection molding equipment comprising the integrated glue melting structure. The integrated glue melting structure comprises a glue melting power mechanism and a reduction gearbox, the reduction gearbox is integrally arranged on the second glue injection plate; an output shaft is arranged at the output end of the second glue injection plate, an integrally-formed transmission shaft is arranged at the end, penetrating through the second glue injection plate, of the output shaft, and the output shaft is in transmission connection with a screw located in the glue melting barrel through the transmission shaft to drive the screw to rotate. The glue melting barrel and the screw rod are arranged on the glue injection head plate in a penetrating manner; the glue melting power mechanism is installed on the reduction gearbox and located above the second glue injection plate. According to the utility model, the reduction gearbox is integrally designed on the second injection plate, so that a spline connection structure between the transmission shaft and the melt glue driving mechanism is omitted, gaps, abrasion and errors among multi-stage connection parts are reduced, the floor area of the machine is effectively reduced, the weight of the equipment is obviously reduced, the overall design is lighter, and the cost is reduced. And the operation flexibility of the equipment is correspondingly improved.

Description

Technical Field

[0001] This utility model relates to the field of injection molding equipment technology, and in particular to an integrated melt structure for injection molding equipment and an injection molding equipment including the same. Background Technology

[0002] The main function of injection molding equipment is to heat and melt plastic granules or powdered raw materials, and then fill them into a mold through high-pressure injection, thereby manufacturing plastic products of various complex shapes. Injection molding machines are widely used in the automotive, home appliance, medical device, and consumer electronics industries, and are characterized by high molding precision, high production efficiency, and high degree of automation. Its core working principle includes the melting, injection, cooling, and demolding processes of the raw material, which are accomplished by the rotation of the screw and the injection action.

[0003] Currently, the power sources for injection molding machines are mainly divided into hydraulic systems and electric drive systems. Hydraulic systems are driven by hydraulic oil motors, possessing a large torque output capacity, but they have high energy consumption and significant noise and pollution problems. Electric drive systems, on the other hand, use efficient motors to drive the screw, offering advantages such as fast response speed, high control precision, and energy saving, thus gradually becoming the mainstream. In the melting stage of an electric-driven injection molding machine, the motor's output shaft typically transmits power to the screw through multiple transmission mechanisms such as synchronous belts, drive wheels, and drive shafts to drive the screw's rotation. The output shaft and drive shaft generally use a spline connection, which involves a large number of components and requires high-precision machining to ensure efficient power transmission; this requires significant manpower and resources in production, assembly, and debugging. Furthermore, after prolonged use, component maintenance and readjustment are necessary, and it is difficult to ensure the reliable connection of each component during high-load injection molding operations.

[0004] Therefore, further research and development are needed to solve the problems existing in the above-mentioned technologies. Utility Model Content

[0005] Therefore, in order to solve the problems existing in the prior art, one of the objectives of this utility model is to provide an integrated melt structure for injection molding equipment.

[0006] The second objective of this utility model is to provide an injection molding device that includes the above-mentioned integrated melt structure.

[0007] One of the objectives of this utility model is achieved through the following technical solution:

[0008] An integrated melting structure for an injection molding machine includes an injection head plate, an injection second plate, a melting cylinder, and a screw. The melting structure includes a melting power mechanism and a reduction gearbox. The reduction gearbox is integrated onto the injection second plate. The reduction gearbox includes an input end and an output end. Its output end is provided with an output shaft, and one end of the output shaft passing through the injection second plate is provided with an integrally formed transmission shaft, which is connected to the screw located inside the melting cylinder to drive the screw to rotate. The melting cylinder and the screw pass through the injection head plate. The melting power mechanism is mounted on the reduction gearbox and located above the injection second plate.

[0009] As a further explanation of the above solution, the inner part of the injection plate is provided with a transversely penetrating transmission assembly cavity, and the outer periphery of the transmission shaft is rotatably disposed in the assembly cavity through a bearing.

[0010] As a further explanation of the above solution, the drive shaft is provided with an axial mounting hole at one end near the screw, and the end of the screw is fitted into the mounting hole.

[0011] As a further explanation of the above solution, the melting power mechanism is a servo motor, which is mounted on the input end of the gearbox via a mounting bracket.

[0012] As a further explanation of the above solution, the gearbox includes a housing and a base located at the bottom of the housing; the horizontal width of the base is greater than the horizontal width of the housing, and the base is integrally formed with the injection molding plate.

[0013] As a further explanation of the above scheme, the outer wall of the second injection plate near the injection head plate is provided with several first weight reduction ports horizontally recessed on both sides of the transmission assembly cavity.

[0014] As a further explanation of the above solution, the injection head plate is provided with a horizontally penetrating molten glue cylinder assembly cavity, and the two side walls of the molten glue cylinder assembly cavity are respectively provided with a number of second weight reduction ports horizontally recessed.

[0015] As a further explanation of the above solution, the bearing is either a ball bearing or a thrust ball bearing.

[0016] The second objective of this utility model is achieved by the following technical solution:

[0017] An injection molding machine includes the above-mentioned integrated structure of two injection plates; the injection head plate is provided with injection cylinders on both sides of the melting cylinder; the injection head plate is provided with cylinder assembly cavities for mounting the injection cylinders on both sides; the cylinder body of the injection cylinder is fixed in the cylinder assembly cavity, and the piston rod of the injection cylinder extends from the cylinder assembly cavity toward the injection head plate to the outside of the injection head plate and is fastened to the injection head plate.

[0018] Compared with the prior art, the beneficial effects of this utility model are at least in the following aspects:

[0019] 1. This utility model integrates the gearbox into the injection platen, eliminating the spline connection structure between the drive shaft and the melt drive mechanism, reducing the gaps, wear, and errors between multi-stage connecting parts, especially under high load and high speed conditions, ensuring transmission accuracy during injection molding; at the same time, the connection between the drive shaft and the screw becomes more direct and compact.

[0020] Furthermore, the design reduces the number of components such as spline connections, gears, and couplings found in traditional designs. By simplifying the mechanical structure, it reduces potential failure points, making the maintenance of injection molding equipment simpler and lowering maintenance costs. In addition, the integrated design reduces unnecessary connecting parts and transmission errors, ensuring high-precision operation of the injection molding equipment and enhancing its stability.

[0021] 2. This utility model integrates the gearbox into the injection molding plate, making the gearbox and injection molding plate a single unit. This avoids the space occupation required for the additional installation of the gearbox in traditional designs, simplifies the equipment layout, and reduces production costs. This compact design can effectively reduce the machine's footprint, and is especially suitable for production environments with limited space or where equipment requires a high-density layout, thereby improving space utilization.

[0022] 3. This utility model adopts an integrated design of the gearbox and the injection platen, which significantly reduces the weight of the equipment. The reduction of redundant parts not only makes the equipment lighter and more flexible, but also simplifies the assembly and debugging process and improves production efficiency. The overall manufacturing cost is also reduced accordingly, optimizing resource utilization and controlling production costs. Several weight-reducing ports are designed on the injection platen and injection head plate, which further reduces transportation and operating costs. The overall design is lighter and the flexibility of equipment operation is also improved, achieving multiple benefits. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the integrated melt structure of the injection molding equipment according to a preferred embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the assembly state of the integrated melt structure of the injection molding equipment according to a preferred embodiment of the present invention;

[0025] Figure 3 This is a partial cross-sectional view of the integrated melt structure of the injection molding equipment in the assembly state, which is a preferred embodiment of this utility model.

[0026] Figure 4 for Figure 3 Enlarged schematic diagram of a local structure at point A;

[0027] Figure 5 This is a schematic diagram of the overall structure of the injection head plate of the integrated melt structure of the injection molding equipment, which is a preferred embodiment of this utility model.

[0028] In the picture:

[0029] 1. Melting power mechanism; 2. Gearbox; 21. Output shaft; 22. Drive shaft; 221. Assembly hole; 23. Housing; 24. Base; 3. Bearing; 4. Fixing bracket;

[0030] 10. Injection head plate; 101. Melt cylinder assembly cavity; 102. Second weight reduction port; 103. Hydraulic cylinder assembly cavity; 20. Injection second plate; 201. Transmission assembly cavity; 202. First weight reduction port; 30. Melt cylinder; 40. Screw; 50. Injection cylinder. Detailed Implementation

[0031] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings and embodiments. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0032] Example 1

[0033] like Figure 1-5 As shown, this utility model provides an integrated melting structure for an injection molding equipment. The injection molding equipment includes an injection head plate 10, an injection second plate 20, a melting cylinder 30, and a screw 40. The melting structure includes a melting power mechanism 1 and a reduction gearbox 2. The reduction gearbox 2 is integrated onto the injection second plate 20. The reduction gearbox 2 includes an input end and an output end. Its output end is provided with an output shaft 21. One end of the output shaft 21, which passes through the injection second plate 20, is provided with an integrally formed transmission shaft 22. The transmission shaft 22 is connected to the screw 40 located inside the melting cylinder 30, driving the screw 40 to rotate. The melting cylinder 30 and the screw 40 pass through the injection head plate 10. The melting power mechanism 1 is mounted on the reduction gearbox 2 and is located above the injection second plate 20.

[0034] To further refine the design, the melt-bonding power mechanism 1 is a servo motor, which is mounted on the input end of the gearbox 2 via a mounting bracket 4. The structure and working principle of the servo motor can be referenced from existing technologies. In this embodiment, the advantage of this design is that the melt-bonding power mechanism is integrated with the gearbox, eliminating the need for a separate installation location for the melt-bonding power mechanism, thereby reducing the overall equipment footprint. Furthermore, the melt-bonding power mechanism is located above the second injection plate, effectively saving equipment space.

[0035] In this embodiment, by integrating the gearbox into the injection molding plate, the gearbox and injection molding plate are combined into one unit, avoiding the space occupation required for the separate installation of the gearbox in traditional designs. This simplifies the equipment layout and reduces production costs. This compact design effectively reduces the machine's footprint, making it particularly suitable for production environments with limited space or where high-density equipment layout is required, thus improving space utilization.

[0036] In this embodiment, the melt-forming power mechanism is powered by a reduction gearbox, which converts the high-speed rotation of the motor into low-speed, high-torque power. The output shaft drives the integrally molded transmission shaft to rotate, which in turn drives the screw located inside the melt cylinder to rotate. Therefore, under the rotation of the screw, the plastic particles are heated, melted, and uniformly mixed, ultimately forming a melt flow. After the melt reaches the appropriate temperature and fluidity, it is injected into the mold through the injection head plate to achieve injection molding.

[0037] As an optional implementation, the injection plate 20 has a transversely penetrating transmission assembly cavity 201 inside, and the outer periphery of the transmission shaft 22 is rotatably mounted in the assembly cavity via a bearing 3. Specifically, the bearing 3 is either a ball bearing 3 or a thrust ball bearing 3. Both ball bearings and thrust ball bearings can effectively reduce friction, provide smooth rotation, improve transmission efficiency, and avoid energy loss caused by friction. In addition, the bearing design can effectively distribute the load, reduce wear, extend the service life of the equipment, and maintain stable performance under high loads and long-term operation.

[0038] Furthermore, the drive shaft 22 has an axial mounting hole 221 at one end near the screw 40, and the end of the screw 40 is fitted into the mounting hole 221. Installing the screw end into this mounting hole provides a precise and stable connection, reduces transmission errors, and improves transmission accuracy and overall system stability.

[0039] As an optional implementation, the gearbox 2 includes a housing 23 and a base 24 located at the bottom of the housing 23; the horizontal width of the base 24 is greater than the horizontal width of the housing 23, and the base 24 is integrally formed with the injection molding plate 20.

[0040] As an optional implementation, the outer wall of the second injection plate 20 near the injection head plate 10 is provided with a plurality of first weight-reducing ports 202 respectively, which are horizontally recessed on both sides of the transmission assembly cavity 201. Additionally, the injection head plate 10 is provided with a transversely penetrating assembly cavity 101 for the melt cylinder 30, and the side walls of the assembly cavity 101 for the melt cylinder 30 are provided with a plurality of second weight-reducing ports 102 respectively.

[0041] In this embodiment, the overall weight of the equipment is reduced by setting weight-reducing ports on the second injection plate and the injection head plate. The design of the weight-reducing ports not only reduces the weight, but also improves the reasonable distribution of materials by optimizing the structure of the plates. This allows the second injection plate and the injection head plate to effectively disperse stress while maintaining sufficient strength, thereby enhancing the stability of the overall structure.

[0042] Example 2

[0043] like Figure 2 As shown, this embodiment 2 provides an injection molding equipment, including the above-mentioned integrated structure of the two injection plates 20; the injection head plate 10 is provided with injection cylinders 50 on both sides of the melting cylinder 30; the two sides of the injection head plate 10 are respectively provided with cylinder assembly cavities 103 for installing the injection cylinders 50; the cylinder body of the injection cylinder 50 is fixed in the cylinder assembly cavity 103, and the piston rod of the injection cylinder 50 extends from the cylinder assembly cavity 103 toward the injection head plate 20 to the outside of the injection head plate 10 and is fastened to the injection head plate 20.

[0044] Generally, the injection molding equipment of this utility model also includes functional components such as a clamping assembly and a mold (not shown in the attached drawings), as well as a frame for placing the various functional components (not shown in the attached drawings). The clamping assembly includes a moving platen and a fixed platen. Usually, the injection head plate is connected to the fixed platen in the clamping assembly by an injection cylinder, which drives the injection head plate and the injection platen to move back and forth as a whole. This utility model does not involve any improvement to the above-mentioned components or modules, so it will not be described in detail.

[0045] The above embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of protection of the present utility model. For those skilled in the art, it will be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An integrated melt structure of an injection molding apparatus, the injection molding apparatus comprising a melt head plate, a melt two plate and a melt cylinder, a screw; characterized in that, The glue melting structure comprises a glue melting power mechanism and a speed reducer; the speed reducer is integrally arranged on the glue injection two-plate; the speed reducer comprises an input end and an output end; the output end is provided with an output shaft, one end of the output shaft arranged on the glue injection two-plate is provided with an integrally formed transmission shaft, and the transmission shaft is in transmission connection with the screw rod arranged in the glue melting cylinder, so as to drive the screw rod to rotate; the glue melting cylinder and the screw rod are arranged on the glue injection head plate; the glue melting power mechanism is arranged on the speed reducer and above the glue injection two-plate.

2. The integrated glue structure of the injection molding apparatus according to claim 1, wherein, The transmission shaft is arranged in the transmission assembly cavity through rotation by a bearing.

3. The integrated glue structure of the injection molding apparatus according to claim 2, wherein, The end of the transmission shaft close to the screw rod is provided with an axial assembly hole, and the end of the screw rod is matched and arranged in the assembly hole.

4. The integrated glue structure of the injection molding apparatus according to claim 2, wherein, The glue melting power mechanism is a servo motor, and the servo motor is arranged on the input end of the speed reducer through a fixing frame.

5. The integrated glue structure of the injection molding apparatus according to claim 4, wherein, The speed reducer comprises a box body and a base arranged at the bottom of the box body; the horizontal width of the base is greater than that of the box body, and the base is integrally formed with the glue injection two-plate.

6. The integrated glue structure of the injection molding apparatus according to claim 1, wherein, The outer wall of the side of the glue injection two-plate close to the glue injection head plate is provided with a plurality of first weight reduction openings horizontally and inwardly arranged at two sides of the transmission assembly cavity.

7. The integrated glue structure of the injection molding apparatus according to claim 6, wherein, The glue injection head plate is provided with a glue melting cylinder assembly cavity which is horizontally and penetratively arranged, and the side walls of two sides of the glue melting cylinder assembly cavity are respectively provided with a plurality of second weight reduction openings which are horizontally and inwardly arranged.

8. The integrated glue structure of the injection molding apparatus according to claim 2, wherein, The bearing is one of a ball bearing and a thrust ball bearing.

9. An injection molding apparatus comprising the integrated structure of the two plates of the injection nozzle as claimed in any one of claims 1 to 6; characterized in that, The glue injection head plate is provided with a glue injection oil cylinder arranged at two sides of the glue melting cylinder; the two sides of the glue injection head plate are respectively provided with an oil cylinder assembly cavity for arranging the glue injection oil cylinder; the cylinder body of the glue injection oil cylinder is fixed in the oil cylinder assembly cavity, and the piston rod of the glue injection oil cylinder extends to the outside of the glue injection head plate through the oil cylinder assembly cavity towards the glue injection two-plate, and is fastened with the glue injection two-plate.

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