Suction device for injection molding production of crushed plastics

Abstract

The utility model discloses a material suction device for injection molding production of crushed plastics in the technical field of plastic processing, the material suction device comprises a material suction pipe and a vibration mechanism, and the discharging end of the material suction pipe communicates with an air inlet of a material suction machine; the vibration mechanism comprises fan blades and an eccentric wheel, the eccentric wheel is rotationally connected to the outer wall of the material suction pipe, a containing box is fixed to the outer wall of the material suction pipe, the eccentric wheel is located in the containing box, and the containing box is used for preventing the eccentric wheel from being blocked by the plastic particles during rotation; the fan blades are rotationally connected into the suction pipe, a transmission shaft is fixedly connected to the centers of the fan blades, the end, away from the fan blades, of the transmission shaft penetrates through the suction pipe to be fixedly connected with a shaft hole of the eccentric wheel, and the transmission shaft is rotationally connected with the suction pipe. According to the scheme, the problem that when an existing material suction pipe sucks plastic particles, normal material suction can not be achieved due to pits is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic processing, in particular to a material suction device for crushed plastic injection molding production. Background Art

[0002] During the injection molding process, some parts are deemed defective due to quality defects and cannot be used. Directly discarding them would cause environmental pollution and waste resources. However, crushing the defective parts into plastic pellets using a crusher can be reused in production, which not only protects the environment but also avoids resource waste and achieves ecologically healthy development. During the automated injection molding process, the crushed plastic pellets are collected in a container and sucked into the drying machine of the plastic injection molding machine using a suction machine. When the suction machine sucks the crushed plastic pellets, the crushed plastic pellets are irregular and flat in shape, and the slope angle at which they slide downward in the container increases. The suction pipe is inserted into the crushed plastic pellet container, and after the nearby crushed plastic pellets are sucked up, a pit is formed. The slope angle of the pit does not reach the slope angle for the crushed plastic pellets to slide downward, so the crushed plastic pellets cannot slide into the suction pipe mouth, causing the suction pipe mouth to remain open and unable to suck the crushed plastic pellets into the drying machine. Insufficient material supply to the drying machine causes the plastic injection molding machine screw to be short of material, resulting in production stoppages and defective injection molded parts.

[0003] To prevent the dryer from being underfed, workers have to manually feed the material every quarter of an hour, which increases their workload. Therefore, there is an urgent need for an automatic suction device that can vibrate the surrounding plastic particles during the suction process to avoid pits that would prevent suction failure. Utility Model Content

[0004] The utility model aims to provide a suction device for crushed plastic injection molding production, so as to solve the problem that when the existing suction pipe sucks plastic particles, it may not be able to suck the material normally due to the pits.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a suction device for crushed plastic injection molding production, comprising a suction pipe and a vibration mechanism, wherein the discharge end of the suction pipe is connected to the air inlet of the suction machine;

[0006] The vibration mechanism includes fan blades and an eccentric wheel, the eccentric wheel is rotatably connected to the outer wall of the suction pipe, a receiving box is fixed on the outer wall of the suction pipe, the eccentric wheel is located in the receiving box, and the receiving box is used to prevent the eccentric wheel from being blocked by plastic particles when rotating; the fan blades are rotatably connected in the suction pipe, a transmission shaft is fixedly connected at the center of the fan blades, the end of the transmission shaft away from the fan blades passes through the suction pipe and is fixedly connected to the shaft hole of the eccentric wheel, and the transmission shaft is rotatably connected to the suction pipe.

[0007] The working principle of the utility model is as follows: when in use, the suction machine is started first, and negative pressure is generated when the suction machine is running. Since the discharge end of the suction pipe is connected to the air inlet of the suction machine, negative pressure will also be formed in the suction pipe when the suction machine is running. At this time, the suction pipe draws outside air into the pipe through the action of negative pressure. When the suction pipe draws in outside air, the air flows in the suction pipe, and then drives the fan blades to rotate through the airflow. When the fan blades rotate, the eccentric wheel is driven to rotate through the transmission shaft. When the eccentric wheel rotates, the suction pipe is driven to vibrate. Therefore, when the suction pipe absorbs plastic particles through negative pressure, the suction pipe vibrates and then performs high-frequency collision on the plastic particles in the container, so that the plastic particles flow to the pits after the plastic particles are absorbed in the container, and fill this part of the pits. At this time, the suction pipe can continue to absorb the plastic particles under the action of negative pressure.

[0008] Beneficial effects of the utility model:

[0009] This solution uses the negative pressure generated by the suction machine to drive the fan blades in the suction pipe to rotate. The rotation of the fan blades drives the eccentric wheel to rotate, causing the suction pipe to vibrate. This vibration causes the plastic particles to slide and fill the pits formed by the sucked plastic particles during the suction process. This achieves the technical effect of automatic suction and eliminates the need for manual feeding, which also saves manpower.

[0010] Furthermore, the suction pipe is provided with an escape hole, into which the fan blade is rotatably connected, with half the fan blade located inside the suction pipe and half outside. A protective shell is fixedly connected to the outer wall of the suction pipe, covering the fan blade. This arrangement allows the fan blade to rotate in a single direction due to the suction force of negative pressure, thereby better ensuring the fan blade's rotation on the suction pipe.

[0011] Furthermore, a protective shell is fixedly connected to the suction pipe and covers the fan blades. The protective shell is used to prevent plastic particles from being sucked into the suction pipe and getting stuck in the fan blades. The purpose is that when the suction pipe absorbs plastic particles, air can pass through the protective shell and thus drive the fan blades to rotate, while plastic particles cannot pass through the protective shell, preventing plastic particles from getting stuck in the fan blades and affecting their rotation.

[0012] Furthermore, the protective housing includes two parallel connecting rods fixedly connected to the suction pipe and located on either side of the fan blades. Multiple curved rods are evenly spaced between the two connecting rods, with the spacing between the curved rods being less than the particle size of the plastic particles. During operation, wind can flow through the gaps between the curved rods, driving the fan blades to rotate. The curved rods can also reduce interference with the wind flow, minimizing the impact on the wind force or the flow rate of the inhaled plastic particles.

[0013] Furthermore, the protective shell is made of transparent plastic, so that the rotation of the fan blades can be directly observed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a cross-sectional view of the front view of a suction device for crushed plastic injection molding production according to the present invention;

[0015] Figure 2 for Figure 1 Cross-sectional view at AA in the middle;

[0016] Figure 3 for Figure 1 Schematic diagram of the structure of the middle protective shell. DETAILED DESCRIPTION

[0017] The following is further described in detail through specific implementation methods:

[0018] The reference numerals in the drawings of the specification include: suction pipe 1, protective shell 2, connecting rod 201, arc rod 202, fan blade 3, avoidance hole 4, transmission shaft 5, protective shell 6, accommodating box 7, eccentric wheel 8.

[0019] The embodiment is basically as shown in the attached Figure 1 , Attachment Figure 2 and attached Figure 3 As shown:

[0020] A suction device for crushed plastic injection molding production, comprising a suction pipe 1 and a vibration mechanism, wherein the discharge end of the suction pipe 1 is connected to the air inlet of the suction machine;

[0021] The vibration mechanism includes fan blades 3 and eccentric wheels 8. The eccentric wheels 8 are rotatably connected to the outer wall of the suction pipe 1. A accommodating box 7 is fixed on the outer wall of the suction pipe. The eccentric wheels 8 are located in the accommodating box 7. The accommodating box 7 is used to prevent the eccentric wheels 8 from being blocked by plastic particles when rotating; an avoidance hole 4 is provided on the suction pipe 1, and the fan blades 3 are rotatably connected in the avoidance hole 4. Half of the fan blades 3 are located inside the suction pipe 1 and half are located outside the suction pipe 1. A transmission shaft 5 is fixedly connected to the center of the fan blades 3, and the end of the transmission shaft 5 away from the fan blades 3 is fixedly connected to the shaft hole of the eccentric wheel 8. A protective shell 6 made of transparent plastic is fixedly connected to the outer wall of the suction pipe 1, and the protective shell 6 covers the fan blades 3. A protective shell 2 is fixedly connected to the suction pipe 1, and the protective shell 2 covers the fan blades 3. The protective shell 2 includes two parallel connecting rods 201. The two connecting rods 201 are fixedly connected to the suction pipe 1 and are located on both sides of the fan blades. A plurality of arc rods 202 are evenly spaced and fixed between the two connecting rods 201. The distance between the arc rods 202 is smaller than the particle size of the plastic particles.

[0022] The specific implementation process is as follows:

[0023] When in use, start the suction machine first. Negative pressure is generated when the suction machine is running. Since the discharge end of the suction pipe 1 is connected to the air inlet of the suction machine, negative pressure is also formed in the suction pipe 1 when the suction machine is running. At this time, the suction pipe 1 draws outside air into the pipe through the action of negative pressure. When the suction pipe 1 draws in outside air, the air flows in the suction pipe 1, and then drives the fan blades 3 to rotate through the airflow. When the fan blades 3 rotate, the eccentric wheel 8 is driven to rotate through the transmission shaft 5. When the eccentric wheel 8 rotates, the suction pipe 1 is driven to vibrate. Therefore, when the suction pipe 1 absorbs plastic particles through negative pressure, the suction pipe 1 vibrates and then performs high-frequency collision on the plastic particles in the container, so that the plastic particles flow to the pits after the plastic particles are absorbed in the container, filling these pits. At this time, the suction pipe 1 can continue to absorb the plastic particles under the action of negative pressure.

Claims

1. A suction device for crushed plastic injection molding, characterized by: It includes a suction pipe and a vibration mechanism, wherein the discharge end of the suction pipe is connected to the air inlet of the suction machine; The vibration mechanism includes fan blades and an eccentric wheel, the eccentric wheel is rotatably connected to the outer wall of the suction pipe, a receiving box is fixed on the outer wall of the suction pipe, the eccentric wheel is located in the receiving box, and the receiving box is used to prevent the eccentric wheel from being blocked by plastic particles when rotating; the fan blades are rotatably connected in the suction pipe, a transmission shaft is fixedly connected at the center of the fan blades, the end of the transmission shaft away from the fan blades passes through the suction pipe and is fixedly connected to the shaft hole of the eccentric wheel, and the transmission shaft is rotatably connected to the suction pipe.

2. A suction device for crushed plastic injection molding according to claim 1, characterized in that: The suction pipe is provided with an avoidance hole, and the fan blade is rotatably connected in the avoidance hole. Half of the fan blade is located in the suction pipe and the other half is located outside the suction pipe. A protective shell is fixedly connected to the outer wall of the suction pipe, and the protective shell covers the fan blade.

3. A suction device for crushed plastic injection molding according to claim 2, characterized in that: A protective shell is fixedly connected to the suction pipe, and the protective shell covers the fan blades. The protective shell is used to prevent the fan blades from being stuck when plastic particles are sucked into the suction pipe.

4. A suction device for crushed plastic injection molding according to claim 3, characterized in that: The protective shell includes two parallel connecting rods, which are fixedly connected in the suction pipe and located on both sides of the fan blade. A plurality of arc rods are evenly spaced and fixed between the two connecting rods, and the distance between the arc rods is smaller than the particle size of the plastic particles.

5. The suction device for crushed plastic injection molding according to claim 4, characterized in that: The protective shell is made of transparent plastic.

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