Spiral discharging device for injection molding machining

Abstract

The utility model relates to the technical field of spiral conveying, and discloses a spiral discharging device for injection molding processing, which comprises two sliding blocks, a heating rod, a hollow shaft and an auger blade, the two ends of the hollow shaft are respectively and rotatably connected with the two sliding blocks, the heating rod is arranged inside the hollow shaft, the auger blade is fixedly connected with the outer side of the hollow shaft, and the auger blade is fixedly connected with the outer side of the hollow shaft. The heating rod is arranged on the inner side of the hollow shaft, raw materials such as plastic particles conveyed by the auger blade in the conveying cylinder can be heated and dried, generated high-temperature humid airflow can be discharged from the ventilation iron wire net, and therefore the raw materials can be heated and dried. Therefore, the spiral feeding device has the damp-proof and drying effects on the plastic particles for injection molding.

Description

Technical Field

[0001] The utility model relates to the technical field of screw conveying, in particular to a screw discharging device for injection molding. Background Art

[0002] During the injection molding process, the raw materials are melted in the high temperature and high pressure environment of the injection molding machine. If the raw materials contain water, they will vaporize at high temperatures, resulting in defects such as bubbles, thus affecting the quality of the injection molded products. In addition, the water-absorbing materials will become brittle and prone to cracking after drying. Therefore, drying the raw materials before injection molding is a very important step and one of the keys to product quality assurance. Many plastic raw materials have a certain degree of water absorption, especially polymer materials such as ABS, PC, PA, etc., which are particularly sensitive to humid environments.

[0003] However, the existing spiral discharging device for injection molding only has a single conveying function, that is, the mixed plastic particles, pigments and additives are fed into the injection molding machine through the spiral conveying device. This may cause the raw materials to become damp again during the conveying process. Based on this, a spiral discharging device for injection molding is proposed. Utility Model Content

[0004] In order to solve the technical problems of an injection molding screw conveying device, the utility model provides a screw discharging device for injection molding.

[0005] The utility model is implemented by the following technical scheme: a spiral discharging device for injection molding, comprising two sliders, a heating rod, a hollow shaft and an auger blade, the two ends of the hollow shaft are respectively rotatably connected to the two sliders, the heating rod is arranged inside the hollow shaft, the auger blade is fixedly connected to the outside of the hollow shaft, support plate mechanisms for limiting the sliders are arranged on both sides of the two sliders, and a conveying cylinder mechanism for conveying plastic particles from one end of the auger blade to the other end is arranged above the auger blade.

[0006] As a further improvement of the above scheme, the support plate mechanism includes a mounting platform, a first bracket and a second bracket. The upper side of the mounting platform is fixedly connected to the lower sides of the first bracket and the second bracket. A card slot is provided on the first bracket and the second bracket. The two sliders are respectively slidably connected to the inner sides of the card slots on the same side. The first bracket and the second bracket are both provided with elastic mechanisms for elastically supporting the sliders.

[0007] As a further improvement of the above scheme, the elastic mechanism includes multiple elastic units, and the internal spaces of the two card slots are divided into two spaces by the sliders respectively. Each of the elastic units is respectively arranged inside the multiple spaces, and one end of each elastic unit is fixedly connected to the slider and the other end is fixedly connected to the inner side of the card slot. A vibration rod mechanism is provided on one side of one of the sliders to enable the slider to elastically reciprocate up and down along the card slot.

[0008] As a further improvement of the above scheme, the vibration rod mechanism includes a servo motor and multiple counterweights. The servo motor is fixedly connected to one side of the slider located on the same side. The output end of the servo motor passes through the slider and is fixedly connected to one end of the hollow shaft. The multiple counterweights are fixedly connected to the hollow shaft. The multiple counterweights are symmetrically distributed at both ends of the hollow shaft to maintain the overall mechanical balance of the hollow shaft.

[0009] As a further improvement of the above scheme, the conveying cylinder mechanism includes a hopper, a docking tube, a conveying cylinder, a ventilation wire mesh and a feed pipe. The hopper is fixedly connected to the upper side of the first bracket, the lower port of the hopper is fixedly connected to the docking tube, the hollow shaft is rotatably connected to the conveying cylinder, the ventilation wire mesh is arranged on the upper side of the conveying cylinder, the upper side of the conveying cylinder is fixedly connected to the feed pipe, the outer cylindrical surface of the lower end of the docking tube is movably connected to the inner cylindrical surface of the feed pipe, and the lower side of the conveying cylinder is provided with a discharge mechanism for discharging raw materials such as plastic particles conveyed to one end.

[0010] As a further improvement of the above scheme, the unloading mechanism includes a connecting plate, a guide pipe and a discharge pipe. The lower side of the conveying cylinder is connected to the upper end of the discharge pipe. One side of the connecting plate is fixedly connected to one side of the second bracket. The guide pipe is fixedly connected to the connecting plate. The upper end of the guide pipe is movably connected to the inner side of the discharge pipe.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The utility model heats and dries the raw materials such as plastic particles conveyed by the auger blades in the conveying cylinder by arranging a heating rod on the inner side of the hollow shaft. The generated high-temperature and humid air flow can be discharged from the ventilation wire mesh, thereby achieving the effect of moisture-proofing and drying the plastic particles for injection molding by the spiral feeding device.

[0013] 2. The utility model cooperates with the elastic mechanism and the vibration rod mechanism. In the process of plastic particles and other raw materials transported by the auger blades in the conveying cylinder migrating from one end to the other, the counterweight block can use its own inertia and, under the support of the elastic unit, drive the hollow shaft and the conveying cylinder to do up and down reciprocating bouncing motion, so that the internal plastic particles are fully exposed to the high-temperature air inside, expanding the contact area of ​​the plastic particles and making the drying effect more complete. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view of a spiral discharging device for injection molding provided by the utility model;

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Figure 3 for Figure 2 side view.

[0017] Description of main symbols:

[0018] 1. Mounting table; 2. First bracket; 3. Elastic unit; 4. Servo motor; 5. Slider; 6. Counterweight; 7. Hopper; 8. Butt joint; 9. Feed pipe; 10. Ventilation wire mesh; 11. Hollow shaft; 12. Heating rod; 13. Second bracket; 14. Connecting plate; 15. Guide pipe; 16. Discharge pipe; 17. Conveying cylinder; 18. Auger blade; 19. Slot. DETAILED DESCRIPTION

[0019] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0020] Example:

[0021] Please combine Figure 1-Figure 3 , a spiral discharging device for injection molding processing in this embodiment includes two sliders 5, a heating rod 12, a hollow shaft 11 and an auger blade 18. The two ends of the hollow shaft 11 are rotatably connected to the two sliders 5 respectively, and clamping plates are provided on both sides of the sliders 5. The heating rod 12 is provided inside the hollow shaft 11. The auger blade 18 is fixedly connected to the outer side of the hollow shaft 11. Support plate mechanisms for limiting the sliders 5 are provided on both sides of the two sliders 5. A conveying cylinder mechanism for conveying plastic particles from one end of the auger blade 18 to the other end is provided above the auger blade 18.

[0022] Please combine Figure 2 As shown, the support plate mechanism includes a mounting platform 1, a first bracket 2 and a second bracket 13. The upper side of the mounting platform 1 is fixedly connected to the lower sides of the first bracket 2 and the second bracket 13. A card slot 19 is provided on the first bracket 2 and the second bracket 13. The two sliders 5 are respectively slidably connected to the inner sides of the card slots 19 on the same side. The first bracket 2 and the second bracket 13 are both provided with an elastic mechanism for elastically supporting the slider 5.

[0023] Please combine Figure 3As shown, the elastic mechanism includes four elastic units 3. The elastic units 3 can be selected from gas springs, hydraulic springs, etc. In this embodiment, springs are used as representatives for display, but the elastic units 3 are in the form of gas springs, hydraulic springs, etc., which are also within the protection scope of the present utility model. The internal space of the two slots 19 is divided into two spaces by the sliders 5 respectively. Each elastic unit 3 is respectively arranged inside the four spaces, and one end of each elastic unit 3 is fixedly connected to the slider 5 and the other end is fixedly connected to the inner side of the slot 19. A vibration rod mechanism is provided on one side of one of the sliders 5 to enable the slider 5 to elastically reciprocate up and down along the slot 19. By providing the elastic unit 3, elastic support can be provided for the movement of the slider 5.

[0024] Please combine Figure 2 As shown, the vibration rod mechanism includes a servo motor 4 and two counterweights 6. The two counterweights 6 are respectively located at both ends of the hollow shaft 11. The servo motor 4 is fixedly connected to one side of the slider 5 located on the same side. The output end of the servo motor 4 passes through the slider 5 and is fixedly connected to one end of the hollow shaft 11. The two counterweights 6 are fixedly connected to the hollow shaft 11. The two counterweights 6 are symmetrically distributed at both ends of the hollow shaft 11 to maintain the overall mechanical balance of the hollow shaft 11.

[0025] Please combine Figure 2 As shown, the conveying cylinder mechanism includes a hopper 7, a docking tube 8, a conveying cylinder 17, a ventilation wire mesh 10 and a feed pipe 9. The hopper 7 is fixedly connected to the upper side of the first bracket 2, the lower port of the hopper 7 is fixedly connected to the docking tube 8, the hollow shaft 11 is rotatably connected to the conveying cylinder 17, the ventilation wire mesh 10 is arranged on the upper side of the conveying cylinder 17, the upper side of the conveying cylinder 17 is fixedly connected to the feed pipe 9, the cylindrical outer surface of the lower end of the docking tube 8 is movably connected to the cylindrical inner surface of the feed pipe 9, and the lower side of the conveying cylinder 17 is provided with a discharge mechanism for discharging raw materials such as plastic particles conveyed to one end.

[0026] Please combine Figure 2 As shown, the unloading mechanism includes a connecting plate 14, a guide pipe 15 and a discharge pipe 16. The lower side of the conveying cylinder 17 is connected to the upper end of the discharge pipe 16. One side of the connecting plate 14 is fixedly connected to one side of the second bracket 13. The guide pipe 15 is fixedly connected to the connecting plate 14. The upper end of the guide pipe 15 is movably connected to the inner side of the discharge pipe 16. The conveyed plastic particles can be directly connected and drained into the injection molding machine through the guide pipe 15.

[0027] The implementation principle of a spiral discharging device for injection molding in the embodiment of the present application is as follows: the user adds the mixed plastic particles, pigments and various injection molding additives into the hopper 7, and the plastic particles enter the conveying cylinder 17 along the docking pipe 8 and the feed pipe 9. The servo motor 4 is started to drive the hollow shaft 11 to rotate, thereby driving the auger blade 18 to rotate. According to the principle of spiral conveying, it can be seen that at this time, the plastic particles can be continuously migrated from one end of the conveying cylinder 17 to the other end. Since the counterweight block 6 is fixedly connected to the hollow shaft 11, and the elastic units 3 are provided on both sides of the slider 5, the counterweight block 6 can use its own elasticity to drive the conveying cylinder 17, the hollow shaft 11 and the plastic particles and other materials inside to jump up and down as a whole. In addition, a heating rod 12 is provided inside the hollow shaft 11 to heat the plastic particles inside the conveying cylinder 17. While the auger blade 18 is conveying and the conveying cylinder 17 is jumping up and down, the plastic particles can finally be discharged from the guide pipe 15 and the discharge pipe 16.

[0028] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A spiral discharging device for injection molding, comprising two sliders (5), a heating rod (12), a hollow shaft (11) and an auger blade (18), characterized in that: The two ends of the hollow shaft (11) are rotatably connected to the two sliders (5), respectively. The heating rod (12) is arranged inside the hollow shaft (11). The auger blade (18) is fixedly connected to the outer side of the hollow shaft (11). Support plate mechanisms for limiting the sliders (5) are arranged on both sides of the two sliders (5). A conveying cylinder mechanism for conveying plastic particles from one end of the auger blade (18) to the other end is arranged above the auger blade (18).

2. A spiral discharging device for injection molding according to claim 1, characterized in that: The support plate mechanism comprises a mounting platform (1), a first bracket (2) and a second bracket (13); the upper side of the mounting platform (1) is fixedly connected to the lower sides of the first bracket (2) and the second bracket (13); a card slot (19) is provided on the first bracket (2) and the second bracket (13); the two sliders (5) are respectively slidably connected to the inner sides of the card slots (19) on the same side; and the first bracket (2) and the second bracket (13) are both provided with elastic mechanisms for elastically supporting the sliders (5).

3. A spiral discharging device for injection molding according to claim 2, characterized in that: The elastic mechanism comprises a plurality of elastic units (3), the internal spaces of the two card slots (19) are respectively divided into two spaces by the sliders (5), each of the elastic units (3) is respectively arranged inside the plurality of spaces, one end of each elastic unit (3) is fixedly connected to the slider (5) and the other end is fixedly connected to the inner side of the card slot (19), and a vibration rod mechanism is provided on one side of one of the sliders (5) for causing the slider (5) to elastically reciprocate up and down along the card slot (19).

4. A spiral discharging device for injection molding according to claim 3, characterized in that: The vibration rod mechanism includes a servo motor (4) and a plurality of counterweights (6); the servo motor (4) is fixedly connected to one side of the slider (5) located on the same side; the output end of the servo motor (4) passes through the slider (5) and is fixedly connected to one end of the hollow shaft (11); the plurality of counterweights (6) are fixedly connected to the hollow shaft (11); and the plurality of counterweights (6) are symmetrically distributed at both ends of the hollow shaft (11) to maintain the overall mechanical balance of the hollow shaft (11).

5. The spiral discharging device for injection molding according to claim 2, characterized in that: The conveying cylinder mechanism comprises a hopper (7), a butt joint (8), a conveying cylinder (17), a ventilation wire mesh (10) and a feed pipe (9); the hopper (7) is fixedly connected to the upper side of the first bracket (2); the lower port of the hopper (7) is fixedly connected to the butt joint (8); the hollow shaft (11) is rotatably connected to the conveying cylinder (17); the ventilation wire mesh (10) is arranged on the upper side of the conveying cylinder (17); the upper side of the conveying cylinder (17) is fixedly connected to the feed pipe (9); the outer surface of the lower end cylinder of the butt joint (8) is movably connected to the inner surface of the cylinder of the feed pipe (9); and the lower side of the conveying cylinder (17) is provided with a discharge mechanism for discharging the plastic granule raw materials conveyed to one end.

6. A spiral discharging device for injection molding according to claim 5, characterized in that: The unloading mechanism includes a connecting plate (14), a guide tube (15) and a discharge tube (16); the lower side of the conveying cylinder (17) is communicated with the upper end of the discharge tube (16); one side of the connecting plate (14) is fixedly connected to one side of the second bracket (13); the guide tube (15) is fixedly connected to the connecting plate (14); and the upper end of the guide tube (15) is movably connected to the inner side of the discharge tube (16).

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