An injection molding machine with barrel heating temperature feedback

Abstract

This utility model discloses an injection molding machine with barrel heating temperature feedback, including a support base and a temperature monitoring instrument. A support plate is fixedly connected to the support base, and a fixing block is fixedly connected to the support plate. This utility model uses the shear heat generated by an external heater and screw rotation to gradually melt plastic granules. The screw advances rapidly under the push of a cylinder, injecting the melt into a closed mold cavity through a nozzle. The temperature monitoring instrument monitors the injection barrel temperature in real time. The system can automatically adjust the heating power to compensate for the effects of changes in ambient temperature and differences in material properties. Based on the temperature data, the injection molding process is adjusted in a timely manner to avoid problems such as uneven plasticization of raw materials and unstable product molding quality, significantly improving product quality. Pressing the activation block pushes the locking block to slide, thereby disassembling the hopper for easy cleaning and avoiding equipment failure or product defects caused by incomplete cleaning, significantly reducing maintenance costs and downtime risks.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, and in particular to an injection molding machine with barrel heating temperature feedback. Background Technology

[0002] Injection molding machines, with their high efficiency, high precision, high automation, high consistency, and powerful molding capabilities, have become the preferred equipment for plastic product manufacturing. The injection molding process is highly automated, with the entire process from raw material drying, melting, injection, pressure holding, cooling to mold opening and ejection completed automatically by the machine. The cycle time is short, making it particularly suitable for mass production, enabling continuous and high-speed production operations and significantly reducing the production time per unit product. Injection molding can produce parts with complex structures, rich details, fine textures, or internal cavities, which is difficult to achieve with many other molding methods. The injection molding process is basically closed, with almost all the raw material entering the mold cavity, and the waste material generated by the runner and gate (sprue material) can usually be recycled and reused.

[0003] However, commonly available injection molding machines have several significant drawbacks: First, the hopper system lacks real-time temperature monitoring and feedback, making it difficult for operators to accurately monitor temperature fluctuations within the hopper and adjust the injection molding process accordingly. This can lead to uneven plasticization of raw materials and unstable product molding quality. Second, the hopper's disassembly design is extremely inconvenient, involving complex and time-consuming steps. Furthermore, it's difficult to thoroughly remove residual materials during cleaning, and the accumulated residue can affect the purity of raw materials in subsequent production. Incomplete cleaning can also cause equipment malfunctions or product defects, significantly increasing maintenance costs and downtime risks. Therefore, designing an injection molding machine with barrel heating temperature feedback is essential. Utility Model Content

[0004] The purpose of this invention is to provide an injection molding machine with barrel heating temperature feedback, in order to solve the defects of existing injection molding machines where the hopper cannot provide feedback based on temperature and the hopper is difficult to disassemble.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an injection molding machine with barrel heating temperature feedback, including a support base, a drive shaft, an injection barrel, and a temperature monitor. A support plate is fixedly connected to the support base, a fixing block is fixedly connected to the support plate, an injection barrel is fixedly connected to the fixing block, a heater is fixedly connected to the injection barrel, a temperature monitor is installed on the heater, a connecting block is fixedly connected to the fixing block, one end of a spring is fixedly connected to the groove of the connecting block, the other end of the spring is fixedly connected to a snap-fit ​​block, the snap-fit ​​block is slidably connected to the groove of the connecting block, the snap-fit ​​block is snapped into a snap-fit ​​groove opened at the bottom of the hopper, an excitation block is slidably connected to the groove of the connecting block, the excitation block is tightly attached to the snap-fit ​​block, and the hopper is sleeved on the connecting block.

[0006] As a further technical solution of this utility model, a side plate is fixedly connected to the support base, and an operating platform is fixedly connected to the side plate.

[0007] As a further technical solution of this utility model, a sliding plate is slidably connected to the side plate, a mold is tightly attached to the sliding plate, the mold is fixedly connected to the fixed plate, and the fixed plate is fixedly connected to the support base.

[0008] As a further technical solution of this utility model, an injection cylinder is fixedly connected to the fixing plate, and a screw is provided inside the injection cylinder.

[0009] As a further technical solution of this utility model, a fixed seat is fixedly connected to the support base, and a sliding groove is provided on the fixed seat, in which a sliding block is slidably connected.

[0010] As a further technical solution of this utility model, a fixing device is fixedly connected to the sliding block, a motor is fixedly connected to the fixing device, a transmission shaft is fixedly connected to the output end of the motor, and the transmission shaft is fixedly connected to the screw.

[0011] As a further technical solution of this utility model, a second fixing flange is fixedly connected to the fixing device, a cylinder is fixedly connected to the second fixing flange, a first fixing flange is fixedly connected to the cylinder, and the first fixing flange is fixedly connected to the support plate.

[0012] This utility model provides an injection molding machine with barrel heating temperature feedback. Its advantages are as follows: After plastic granules enter from the hopper, they enter the injection barrel through a pipe inside the fixed block. The plastic granules gradually melt due to the shear heat generated by the external heater and screw rotation. The temperature gradually increases from the feed end to the nozzle end. The motor output drives the transmission shaft to rotate, which in turn drives the screw to rotate. The cylinder operates, causing the sliding block to slide in the sliding groove, which in turn drives the screw to push the molten plastic to the front end. Simultaneously, back pressure (typically 5-10 MPa) ensures uniform plasticization and avoids bubble formation. The melt is injected into the closed mold cavity through the nozzle. A temperature monitor tracks the injection barrel temperature in real time. The system can automatically adjust the heating power to compensate for the effects of ambient temperature changes and material property differences. Based on temperature data, the injection molding process is adjusted in a timely manner to avoid problems such as uneven raw material plasticization and unstable product molding quality, significantly improving product quality. Pressing the activation block pushes the locking block to slide, allowing the hopper to be disassembled for easy cleaning, avoiding equipment failure or product defects caused by incomplete cleaning, and significantly reducing maintenance costs and downtime risks. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a three-dimensional schematic diagram of the entire utility model; Figure 3 This is a three-dimensional schematic diagram of the screw of this utility model; Figure 4 This is a three-dimensional schematic diagram of the connecting block of this utility model.

[0015] In the diagram: 1. Support base; 2. Fixed seat; 3. Sliding block; 4. Sliding groove; 5. Fixing device; 6. Motor; 7. First fixed flange; 8. Drive shaft; 9. Support plate; 10. Operating platform; 11. Sliding plate; 12. Side plate; 13. Fixed plate; 14. Injection cylinder; 15. Temperature monitor; 16. Heater; 17. Hopper; 18. Mold; 19. Connecting block; 20. Cylinder; 21. Second fixed flange; 22. Screw; 23. Actuating block; 24. Spring; 25. Snap-fit ​​block; 26. Fixed block. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] Please see the appendix Figure 1 - Appendix Figure 4This utility model provides an embodiment of an injection molding machine with barrel heating temperature feedback, including a support base 1, a drive shaft 8, an injection barrel 14, and a temperature monitor 15. A support plate 9 is fixedly connected to the support base 1, a fixing block 26 is fixedly connected to the support plate 9, the injection barrel 14 is fixedly connected to the fixing block 26, a heater 16 is fixedly connected to the injection barrel 14, and the temperature monitor 15 is installed on the heater 16. A connecting block 19 is fixedly connected to the fixing block 26, one end of a spring 24 is fixedly connected to the groove of the connecting block 19, and the other end of the spring 24 is fixedly connected to a snap-fit ​​block 25. The snap-fit ​​block 25 is slidably connected to the groove of the connecting block 19 and snaps into a snap-fit ​​groove opened at the bottom of the hopper 17. An excitation block 23 is slidably connected to the groove of the connecting block 19, and the excitation block 23 is tightly attached to the snap-fit ​​block 25. The connecting block 19 is sleeved onto the hopper 17. A side plate 12 is fixedly connected to the support base 1. 2. An operating platform 10 is fixedly connected to the side plate 12; a sliding plate 11 is slidably connected to the side plate 12, and a mold 18 is tightly attached to the sliding plate 11. The mold 18 is fixedly connected to the fixed plate 13, and the fixed plate 13 is fixedly connected to the support base 1; an injection cylinder 14 is fixedly connected to the fixed plate 13, and a screw 22 is provided inside the injection cylinder 14; a fixed seat 2 is fixedly connected to the support base 1, and a sliding groove 4 is opened on the fixed seat 2. A sliding block 3 is slidably connected in the sliding groove 4; a fixed device 5 is fixedly connected to the sliding block 3, and a motor 6 is fixedly connected to the fixed device 5. A drive shaft 8 is fixedly connected to the output end of the motor 6, and the drive shaft 8 is fixedly connected to the screw 22. The shearing heat generated by the rotation of the screw 22 melts the plastic particles; a second fixed flange 21 is fixedly connected to the fixed device 5, and a cylinder 20 is fixedly connected to the second fixed flange 21. A first fixed flange 7 is fixedly connected to the cylinder 20, and the first fixed flange 7 is fixedly connected to the support plate 9.

[0018] Specifically, in use, plastic granules first enter from the hopper 17 and then enter the injection cylinder 14 through the pipe inside the fixing block 26. The plastic granules gradually melt due to the shear heat generated by the external heater 16 and the rotation of the screw 22. The temperature gradually increases from the feed end to the nozzle end. The output end of the motor 6 drives the transmission shaft 8 to rotate, which in turn drives the screw 22 to rotate. The cylinder 20 works, causing the sliding block 3 to slide in the sliding groove 4, which in turn drives the screw 22 to push the molten plastic to the front end. At the same time, back pressure (usually 5-10 MPa) ensures uniform plasticization and avoids the generation of bubbles. The melt is injected into the closed cavity of the mold 18 through the nozzle. The temperature monitor 15 monitors the temperature of the injection barrel 14 in real time. The system can automatically adjust the heating power to compensate for the effects of changes in ambient temperature and differences in material properties. Based on the temperature data, the injection molding process is adjusted in a timely manner to avoid problems such as uneven plasticization of raw materials and unstable product molding quality, thereby greatly improving product quality. Pressing the activation block 23 pushes the locking block 25 to slide, thereby disassembling the material hopper 17 for easy cleaning. This avoids equipment failure or product defects caused by incomplete cleaning, and greatly reduces maintenance costs and downtime risks.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An injection molding machine with barrel heating temperature feedback, comprising a support base (1), a transmission shaft (8), an injection cylinder (14) and a temperature monitor (15), characterized in that: A support plate (9) is fixedly connected to the support base (1), a fixing block (26) is fixedly connected to the support plate (9), an injection cylinder (14) is fixedly connected to the fixing block (26), a heater (16) is fixedly connected to the injection cylinder (14), a temperature monitor (15) is installed on the heater (16), a connecting block (19) is fixedly connected to the fixing block (26), one end of a spring (24) is fixedly connected to the groove of the connecting block (19), the other end of the spring (24) is fixedly connected to the snap-fit ​​block (25), the snap-fit ​​block (25) is slidably connected to the groove of the connecting block (19), the snap-fit ​​block (25) is snapped into the snap-fit ​​groove opened at the bottom of the hopper (17), an excitation block (23) is slidably connected to the groove of the connecting block (19), the excitation block (23) is tightly attached to the snap-fit ​​block (25), and the hopper (17) is sleeved on the connecting block (19).

2. An injection molding machine having barrel heating temperature feedback according to claim 1, wherein: A side plate (12) is fixedly connected to the support base (1), and an operating platform (10) is fixedly connected to the side plate (12).

3. An injection molding machine having barrel heating temperature feedback according to claim 2, wherein: A sliding plate (11) is slidably connected to the side plate (12), and a mold (18) is tightly attached to the sliding plate (11). The mold (18) is fixedly connected to the fixed plate (13), and the fixed plate (13) is fixedly connected to the support base (1).

4. An injection molding machine having barrel heating temperature feedback according to claim 3, wherein: An injection cylinder (14) is fixedly connected to the fixing plate (13), and a screw (22) is provided inside the injection cylinder (14).

5. An injection molding machine having barrel heating temperature feedback according to claim 3 wherein: A fixed seat (2) is fixedly connected to the support base (1), and a sliding groove (4) is provided on the fixed seat (2). A sliding block (3) is slidably connected in the sliding groove (4).

6. An injection molding machine having barrel heating temperature feedback according to claim 5 wherein: A fixing device (5) is fixedly connected to the sliding block (3), a motor (6) is fixedly connected to the fixing device (5), a transmission shaft (8) is fixedly connected to the output end of the motor (6), and the transmission shaft (8) is fixedly connected to the screw (22).

7. An injection molding machine having barrel heating temperature feedback according to claim 6 wherein: The fixing device (5) is fixedly connected to a second fixing flange (21), the second fixing flange (21) is fixedly connected to a cylinder (20), the cylinder (20) is fixedly connected to a first fixing flange (7), and the first fixing flange (7) is fixedly connected to a support plate (9).

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