Double-cylinder extruder

Abstract

The utility model relates to the technical field of extruders, in particular to a double-cylinder extruder, which is provided with a sliding frame, a transmission seat and an injection seat, the transmission seat drives a screw in the injection seat to rotate, and the screw rotates to generate pressure and shear force to plasticize and mix materials so as to produce various plastic products. A pushing cylinder is further arranged, when the screw rod and the material pipe need to be cleaned and maintained, the pushing cylinder drives the transmission base to slide on the sliding frame, then the screw rod extends out of the material pipe, cleaning is convenient, machine disassembling is not needed, and the maintenance difficulty is low; meanwhile, the two pushing cylinders are adopted and symmetrically arranged on the two sides of the transmission base, and it is guaranteed that the screw is pushed out through enough pushing force.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, in particular to a double-cylinder extruder. Background Art

[0002] Extruder is a type of plastic machinery. It mainly relies on the pressure and shear force generated by the rotation of the screw to fully plasticize and evenly mix the material. People use extruders to produce various plastic products.

[0003] Since residual materials will remain on the barrel and the screw, affecting the normal operation of the extruder, the extruder needs to be cleaned regularly and disassembled, which is difficult and increases maintenance costs. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a twin-cylinder extruder that is easy to clean and maintain later.

[0005] The utility model adopts the following technical solutions:

[0006] A twin-cylinder extruder comprises a sliding frame, a transmission seat slidably connected to the sliding frame, and an injection seat slidably connected to the sliding frame; a transmission element is fixedly provided on the transmission seat, a screw is provided on the injection seat, the tail end of the screw is drivingly connected to the transmission element, and the transmission element drives the screw to rotate; two symmetrically arranged push cylinders are provided on the injection seat, the push ends of the push cylinders are fixedly connected to the transmission seat, and the push cylinders drive the transmission seat to slide to drive the screw to extend or retract.

[0007] Preferably, the sliding frame includes a base frame and a slide rail fixed to the upper end of the base frame, and a slide block is fixed to the lower end of the transmission seat and the injection seat, and the slide block is slidably connected to the slide rail.

[0008] Preferably, the transmission seat includes a support seat and connecting parts arranged on both sides of the support seat, the transmission element is assembled on the support seat, and the pushing end of the pushing cylinder is fixedly connected to the connecting parts.

[0009] Preferably, the transmission element is fixed to a side of the support seat away from the injection seat, and a transmission shaft is extended from the transmission element, and the transmission shaft passes through the support seat and is drivingly connected to the tail end of the screw.

[0010] Preferably, a rotating bearing is sleeved on the outer side of the transmission shaft, and the rotating bearing is fixedly connected to the support seat.

[0011] Preferably, an electronic ruler is provided on the side of the transmission seat, and the electronic ruler is used to detect the distance between the injection seat and the transmission seat.

[0012] Preferably, the injection seat includes a base and a material tube assembled on the base; the screw is arranged in the material tube and one end thereof passes through.

[0013] Preferably, a first feed hole is formed on the base, a second feed hole is formed on the outer wall of the feed pipe, and the first feed hole is aligned with the second feed hole.

[0014] Preferably, an injection head is provided at one end of the material pipe away from the transmission seat.

[0015] Preferably, a front end cover is provided at one end of the push cylinder close to the transmission seat, and a rear end cover is provided at one end of the push cylinder away from the transmission seat, and the rear end cover is fixedly connected to the injection seat.

[0016] The beneficial effects of the utility model are:

[0017] The double-cylinder extruder involved in the utility model is provided with a sliding frame, a transmission seat and an injection seat. The transmission seat drives the screw in the injection seat to rotate. The rotation of the screw generates pressure and shear force to plasticize and mix the material, so as to produce various plastic products. A pushing cylinder is also provided. When the screw and the material pipe need to be cleaned and maintained, the pushing cylinder drives the transmission seat to slide on the sliding frame, so that the screw is extended from the material pipe, which is convenient for cleaning without disassembly and has low maintenance difficulty. At the same time, two pushing cylinders are used, which are symmetrically arranged on both sides of the transmission seat to ensure that there is enough thrust to push the screw out. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a first overall structural schematic diagram of the double-cylinder extruder of the utility model;

[0019] Figure 2 This is a second overall structural schematic diagram of the double-cylinder extruder of the utility model;

[0020] Figure 3 for Figure 1 Schematic diagram of the structural explosion of the twin-cylinder extruder.

[0021] Numbers in the figure:

[0022] 10-sliding frame; 11-bottom frame; 12-slide rail; 13-sliding block;

[0023] 20-transmission seat; 21-support seat; 22-connecting part;

[0024] 30-injection seat; 31-base; 311-first feed hole; 32-feed pipe; 321-second feed hole; 322-injection head;

[0025] 40-transmission element; 41-transmission shaft; 42-rotation bearing; 43-electronic ruler;

[0026] 50-screw;

[0027] 60-push cylinder; 61-front end cover; 62-rear end cover. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be noted that the terms "vertical direction", "upper", "lower", "horizontal" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figures 1 to 3As shown, the double-cylinder extruder of the utility model comprises a sliding frame 10, a transmission seat 20 slidably connected to the sliding frame 10, and an injection seat 30 slidably connected to the sliding frame 10; a transmission element 40 is fixedly provided on the transmission seat 20, and a screw 50 is provided on the injection seat 30, and the tail end of the screw 50 is drivingly connected to the transmission element 40. In this embodiment, the transmission element 40 adopts a hydraulic motor, and the transmission element 40 drives the screw 50 to rotate, so that the material in the injection seat 30 is plasticized and mixed, and finally sent out from the injection seat 30. Two symmetrically arranged push cylinders 60 are provided on the injection seat 30, and the push ends of the push cylinders 60 are fixedly connected to the transmission seat 20. The push cylinders 60 drive the transmission seat 20 to slide on the sliding frame 10. Since the transmission seat 20 is drivingly connected to the tail end of the screw 50, when the transmission seat 20 slides, it will drive the screw 50 to extend or retract from the injection seat 30, so that the screw 50 can be cleaned easily.

[0032] Specifically, the sliding frame 10 includes a base frame 11 and a slide rail 12 fixed to the upper end of the base frame 11. The lower ends of the transmission seat 20 and the injection seat 30 are fixed with a slider 13, and the slider 13 is slidably connected to the slide rail 12. The use of the slider 13 can reduce the sliding friction between the transmission seat 20 and the injection seat 30.

[0033] Specifically, the transmission seat 20 includes a support seat 21 and a connecting portion 22 arranged on both sides of the support seat 21. The transmission element 40 is assembled on the support seat 21, and the pushing end of the push cylinder 60 is fixedly connected to the connecting portion 22; the transmission element 40 is fixed to the side of the support seat 21 away from the injection seat 30, and the transmission element 40 extends a transmission shaft 41, which penetrates the support seat 21 and is driven and connected to the tail end of the screw 50. Further, a rotating bearing 42 is sleeved on the outer side of the transmission shaft 41, and the rotating bearing 42 is fixedly connected to the support seat 21. The rotating bearing 42 can reduce the rotation resistance of the transmission shaft 41 and improve the transmission efficiency. An electronic ruler 43 is provided on the side of the transmission seat 20, and the electronic ruler 43 is used to detect the distance between the injection seat 30 and the transmission seat 20.

[0034] Specifically, the injection seat 30 includes a base 31 and a material tube 32 assembled on the base 31; the screw 50 is arranged in the material tube 32 and one end thereof passes through. A first feed hole 311 is provided on the base 31, and a second feed hole 321 is provided on the outer wall of the material tube 32. The first feed hole 311 and the second feed hole 321 are arranged in alignment, and raw materials are added into the material tube 32 through the first feed hole 311 and the second feed hole 321. An injection head 322 is provided at one end of the material tube 32 away from the transmission seat 20. The raw materials in the material tube 32 are discharged from the injection head 322 after plasticization and mixing under the rotation of the screw 50.

[0035] Specifically, a front end cover 61 is provided at one end of the push cylinder 60 close to the transmission seat 20 , and a rear end cover 62 is provided at one end of the push cylinder 60 away from the transmission seat 20 . The push cylinder 60 is fixedly connected to the injection seat 30 via the rear end cover 62 .

[0036] Compared with the prior art, the twin-cylinder extruder involved in the utility model is provided with a sliding frame 10, a transmission seat 20 and an injection seat 30. The transmission seat 20 drives the screw 50 in the injection seat 30 to rotate. The rotation of the screw 50 generates pressure and shear force to plasticize and mix the material, so as to produce various plastic products; a pushing cylinder 60 is also provided. When the screw 50 and the material pipe 32 need to be cleaned and maintained, the pushing cylinder 60 drives the transmission seat 20 to slide on the sliding frame 10, so that the screw 50 extends out from the material pipe 32, which is convenient for cleaning without disassembly and has low maintenance difficulty; at the same time, two pushing cylinders 60 are used, which are symmetrically arranged on both sides of the transmission seat 20 to ensure that there is sufficient thrust to push the screw 50 out.

[0037] The above only expresses the preferred technical solution of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and the utility model is also intended to include these modifications and modifications.

Claims

1. A twin-cylinder extruder, characterized in that: It includes a sliding frame, a transmission seat slidably connected to the sliding frame, and an injection seat slidably connected to the sliding frame; a transmission element is fixedly provided on the transmission seat, a screw is provided on the injection seat, the tail end of the screw is drivingly connected to the transmission element, and the transmission element drives the screw to rotate; two symmetrically arranged pushing cylinders are provided on the injection seat, the pushing ends of the pushing cylinders are fixedly connected to the transmission seat, and the pushing cylinders drive the transmission seat to slide to drive the screw to extend or retract.

2. The twin-cylinder extruder according to claim 1, characterized in that: The sliding frame includes a base frame and a slide rail fixed to the upper end of the base frame. The lower ends of the transmission seat and the injection seat are fixed with a slider, and the slider is slidably connected to the slide rail.

3. The twin-cylinder extruder according to claim 1, characterized in that: The transmission seat comprises a support seat and connecting parts arranged on both sides of the support seat, the transmission element is assembled on the support seat, and the pushing end of the pushing cylinder is fixedly connected to the connecting parts.

4. The twin-cylinder extruder according to claim 3, characterized in that: The transmission element is fixed to a side of the support seat away from the injection seat, and a transmission shaft is extended from the transmission element. The transmission shaft passes through the support seat and is drivingly connected to the tail end of the screw.

5. The twin-cylinder extruder according to claim 4, characterized in that: The outer side of the transmission shaft is sleeved with a rotating bearing, and the rotating bearing is fixedly connected to the support seat.

6. The twin-cylinder extruder according to claim 1, characterized in that: An electronic ruler is provided on the side of the transmission seat, and the electronic ruler is used to detect the distance between the injection seat and the transmission seat.

7. The twin-cylinder extruder according to claim 1, characterized in that: The injection seat comprises a base and a material tube assembled on the base; the screw is arranged in the material tube and one end thereof passes through.

8. The twin-cylinder extruder according to claim 7, characterized in that: A first feed hole is formed on the base, a second feed hole is formed on the outer wall of the feed pipe, and the first feed hole is aligned with the second feed hole.

9. The twin-cylinder extruder according to claim 7, characterized in that: An injection head is arranged at one end of the material pipe away from the transmission seat.

10. The twin-cylinder extruder according to claim 1, characterized in that: A front end cover is provided at one end of the push cylinder close to the transmission seat, and a rear end cover is provided at one end of the push cylinder away from the transmission seat. The rear end cover is fixedly connected to the injection seat.

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