Plastic extruder

Abstract

The utility model relates to the technical field of plastic production, in particular to a plastic extruder which comprises an extruder body and a cushion block arranged at the bottom of the extruder body, the extruder body is fixedly connected with a feeding pipe, the feeding pipe is fixedly connected with a feeding hopper, and the feeding hopper is fixedly connected with a discharging pipe. The utility model discloses a plastic crushing device, which comprises a feed hopper and a feed pipe, a crushing mechanism for crushing plastic with larger volume is arranged in the feed hopper, the crushing mechanism comprises two crushing rollers, and the feed pipe is provided with a spiral blade used for feeding, so that the plastic with larger volume is crushed by adopting the crushing mechanism, and the crushed plastic falls into the feed pipe; according to the plastic extruder, the first motor drives the spiral blade to rotate, then plastic in the feeding pipe is conveyed into the extruder body, the extruder body can rapidly melt the plastic with the large size through the smashing mechanism, then the plastic is conveyed through the rotating spiral blade, and the situation that the plastic is blocked in the feeding pipe is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic production, in particular to a plastic extruder. Background Art

[0002] In plastic extrusion molding equipment, plastic extruder is usually called the main machine, and its supporting subsequent equipment plastic extrusion molding machine is called auxiliary machine. Plastic extruder can be matched with various plastic molding auxiliary machines such as pipes, films, holding materials, monofilaments, flat wires, strapping tapes, extruded nets, plates, profiles, granulation, cable coating, etc. to form various plastic extrusion molding production lines and produce various plastic products.

[0003] When using an existing plastic extruder, plastic is usually added into the plastic extruder through a feed hopper, the plastic is melted by a heater in the plastic extruder, and then the screw is driven by a drive motor to rotate to push out the melted plastic. However, this feeding method can only feed smaller granular plastics so that the plastic can be melted quickly. However, it has too many limitations. At the same time, adding too many plastic particles at one time may cause the feed port to be blocked.

[0004] For this purpose, we designed a plastic extruder. Utility Model Content

[0005] The utility model aims to solve the problems that the plastic extruder in the prior art can only extrude and process granular plastics with a small volume and that adding too many plastic particles at one time will cause the feed port to be blocked, and proposes a plastic extruder.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A plastic extruder comprises an extruder body and a cushion block arranged at the bottom of the extruder body, wherein a feed pipe is fixedly connected to the extruder body, a feed hopper is fixedly connected to the feed pipe, a crushing mechanism for crushing larger plastics is arranged in the feed hopper, the crushing mechanism comprises two crushing rollers, and the feed pipe is provided with a spiral blade for feeding.

[0008] Preferably, a crushing box is fixedly connected inside the feed hopper, and the two crushing rollers are rotatably connected inside the crushing box.

[0009] Preferably, the pulverizing mechanism further comprises:

[0010] Two first gears, the two first gears are arranged between the feed hopper and the crushing box and are rotatably connected to the crushing box, and the two first gears are coaxially fixed to the two crushing rollers respectively;

[0011] Two second gears are arranged between the feed hopper and the crushing box and are rotatably connected to the crushing box. The two second gears are meshed with each other, and the second gears are meshed with the first gear.

[0012] Preferably, a second motor is fixedly connected to one side of the crushing box, and an output end of the second motor extends into the crushing box and is coaxially fixed with the crushing roller.

[0013] Preferably, two guide plates are symmetrically fixed on the crushing box, and a guide cover is provided at the bottom of the crushing box, and the guide cover is fixedly connected to the crushing box through a plurality of connecting rods.

[0014] Preferably, a first motor is fixedly connected inside the guide cover, and an output end of the first motor is coaxially fixed with the spiral blade.

[0015] The beneficial effects of the utility model are:

[0016] The utility model adopts a crushing mechanism to crush large-volume plastics, and the crushed plastics fall into a feed pipe. The first motor drives the spiral blade to rotate, and then the plastics in the feed pipe are transported into the extruder body. The crushing mechanism enables the extruder body to quickly melt the large-volume plastics, and then the plastics are transported through the rotating spiral blades to avoid the plastics being blocked in the feed pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a plastic extruder proposed by the utility model;

[0018] Figure 2 This is a structural cross-sectional view of a plastic extruder proposed by the utility model;

[0019] Figure 3 It is a partial cross-sectional view of a plastic extruder proposed by the utility model;

[0020] Figure 4 The utility model is a left side cross-sectional view of a plastic extruder proposed by the utility model.

[0021] In the figure: 1. extruder body; 2. cushion block; 3. feed pipe; 4. feed hopper; 5. crushing box; 6. guide plate; 7. crushing roller; 8. spiral blade; 9. connecting rod; 10. guide cover; 11. first motor; 12. first gear; 13. second gear; 14. second motor. DETAILED DESCRIPTION

[0022] Reference Figure 1-Figure 4A plastic extruder includes an extruder body 1 and a pad 2 arranged at the bottom of the extruder body 1. It should be noted that the extruder body 1 melts the plastic through a heater in the extruder, and then drives the screw to rotate through a driving motor to push out the melted plastic. The extruder body 1 is a prior art and will not be elaborated on in detail herein.

[0023] A feed pipe 3 is fixedly connected to the extruder body 1, and a feed hopper 4 is fixedly connected to the feed pipe 3. A crushing mechanism for crushing larger plastics is arranged in the feed hopper 4. The crushing mechanism includes two crushing rollers 7. The feed pipe 3 is provided with a spiral blade 8 for feeding.

[0024] Reference Figure 3 and Figure 4 As shown, a crushing box 5 is fixedly connected to the feed hopper 4, and two crushing rollers 7 are rotatably connected to the crushing box 5; the crushing mechanism also includes two first gears 12, which are arranged between the feed hopper 4 and the crushing box 5 and are rotatably connected to the crushing box 5, and the two first gears 12 are coaxially fixed to the two crushing rollers 7 respectively; the crushing mechanism also includes two second gears 13, which are arranged between the feed hopper 4 and the crushing box 5 and are rotatably connected to the crushing box 5, the two second gears 13 are meshed with each other, and the second gear 13 is meshed with the first gear 12; a second motor 14 is fixedly connected to one side of the crushing box 5, and the output end of the second motor 14 extends into the crushing box 5 and is coaxially fixed to the crushing roller 7.

[0025] When in use, the second motor 14 is started to drive a crushing roller 7 to rotate, and the rotating crushing roller 7 drives the coaxially fixed first gear 12 to rotate, and the rotating first gear 12 drives another first gear 12 to rotate through the meshing second gear 13, thereby driving the other crushing roller 7 to rotate in the opposite direction. The larger plastic is crushed by the two crushing rollers 7 rotating in opposite directions, and the extruder body 1 can quickly melt the larger plastic through the crushing mechanism. It should be noted that the specific model and specifications of the second motor 14 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0026] Reference Figure 2 and Figure 4 As shown, two guide plates 6 are symmetrically fixed on the crushing box 5. The guide plates 6 are arranged so that the plastic put into the feed hopper 4 will slide between the two crushing rollers 7 so that the crushing rollers 7 can crush it; a guide cover 10 is provided at the bottom of the crushing box 5, and the guide cover 10 is fixedly connected to the crushing box 5 through a plurality of connecting rods 9. The guide cover 10 is arranged to prevent the crushed plastic from falling onto the first motor 11 and being unable to be transported into the extruder body 1.

[0027] Reference Figure 3As shown, a first motor 11 is fixedly connected inside the guide cover 10, and an output end of the first motor 11 is coaxially fixed with the spiral blade 8; when in use, the crushed plastic falls into the feed pipe 3 through the guide cover 10, and the first motor 11 is started to drive the spiral blade 8 to rotate, and the rotating spiral blade 8 transports the plastic into the extruder body 1, and the plastic is transported by the rotating spiral blade 8 to avoid the plastic being blocked in the feed pipe 3; it should be noted that the specific model and specifications of the first motor 11 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0028] The working principle of the utility model is as follows:

[0029] The second motor 14 is started to drive one crushing roller 7 to rotate, and the rotating crushing roller 7 drives the coaxially fixed first gear 12 to rotate, and the rotating first gear 12 drives another first gear 12 to rotate through the meshing second gear 13, thereby driving the other crushing roller 7 to rotate in the opposite direction, and the large plastic is crushed by the two crushing rollers 7 rotating in opposite directions;

[0030] The crushed plastic falls into the feed pipe 3 through the guide cover 10 , and the first motor 11 is started to drive the spiral blade 8 to rotate, and the rotating spiral blade 8 transports the plastic into the extruder body 1 .

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A plastic extruder, comprising an extruder body (1) and a cushion block (2) arranged at the bottom of the extruder body (1), characterized in that: A feed pipe (3) is fixedly connected to the extruder body (1), a feed hopper (4) is fixedly connected to the feed pipe (3), a pulverizing mechanism for pulverizing relatively large plastics is provided in the feed hopper (4), the pulverizing mechanism comprises two pulverizing rollers (7), and the feed pipe (3) is provided with a spiral blade (8) for feeding.

2. A plastic extruder according to claim 1, characterized in that: A crushing box (5) is fixedly connected to the feed hopper (4), and the two crushing rollers (7) are rotatably connected to the crushing box (5).

3. A plastic extruder according to claim 2, characterized in that: The pulverizing mechanism also includes: Two first gears (12), the two first gears (12) being arranged between the feed hopper (4) and the crushing box (5) and being rotatably connected to the crushing box (5), and the two first gears (12) being coaxially fixed to the two crushing rollers (7) respectively; Two second gears (13), the two second gears (13) are arranged between the feed hopper (4) and the crushing box (5), and are rotatably connected to the crushing box (5), the two second gears (13) are meshed with each other, and the second gears (13) are meshed with the first gear (12).

4. A plastic extruder according to claim 2, characterized in that: A second motor (14) is fixedly connected to one side of the crushing box (5), and an output end of the second motor (14) extends into the crushing box (5) and is coaxially fixed with the crushing roller (7).

5. A plastic extruder according to claim 2, characterized in that: Two guide plates (6) are symmetrically fixed on the pulverizing box (5), a guide cover (10) is provided at the bottom of the pulverizing box (5), and the guide cover (10) is fixedly connected to the pulverizing box (5) via a plurality of connecting rods (9).

6. A plastic extruder according to claim 5, characterized in that: A first motor (11) is fixedly connected inside the guide cover (10), and an output end of the first motor (11) is coaxially fixed to the spiral blade (8).

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