Single-screw extruder

Abstract

The utility model discloses a single screw extruder, which relates to the field of extruders, and adopts the technical scheme that the single screw extruder comprises a machine barrel and a feed hopper, the feed hopper is fixedly connected to the machine barrel, a sliding chute is formed in the outer wall of the feed hopper, a vibration block is connected in the sliding chute in a sliding manner, a communicating groove is formed in the top surface of the vibration block, and a reciprocating mechanism is arranged on the machine barrel; the reciprocating mechanism is used for driving the vibration block to slide back and forth in the sliding groove and can be separated from the vibration block, and a limiting piece is arranged on the feeding hopper. Through the arrangement of the reciprocating mechanism, the vibration block moves back and forth in the feeding hopper, so that plastic particles in the feeding hopper can collide with one another, slide or be rearranged, the adhesive force or friction force between the plastic particles is reduced, the plastic particles are helped to be loosened, the plastic particles can flow more smoothly, and the situation that the plastic particles are blocked is reduced; and the extrusion efficiency of the extruder is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to extruder field, more specifically, it relates to a single screw extruder. BACKGROUND

[0002] Single screw extruder is mainly used for heating, melting plastic particles or other raw materials, and extruding into a specific shape product through a die, its working principle is that a single screw rotates in the cylinder, pushing the raw material along the length direction of the extruder, heating and plasticizing the raw material in the process, and finally extruding through the die head to form the required product.

[0003] The feeding hopper is fixedly connected to the cylinder, and after people pour plastic particles into the feeding hopper, the plastic particles can enter the cylinder and be pushed by the screw, in the process of being pushed by the screw, the height of the plastic particles in the hopper will slowly decrease, but the volume of the existing plastic particles is relatively small, when the plastic particles are poured into the hopper, the plastic particles are relatively tightly stacked between them, which causes the plastic particles to easily block in the hopper.

[0004] Therefore, a new scheme needs to be proposed to solve this problem. UTILITY MODEL CONTENT

[0005] In view of the deficiencies in the prior art, the utility model aims at providing a single screw extruder.

[0006] The above technical purpose of the utility model is realized by the following technical scheme: a single screw extruder, comprising a cylinder and a feeding hopper, the feeding hopper is fixedly connected to the cylinder, a chute is formed in the outer wall of the feeding hopper and communicates with the inside of the feeding hopper, a vibration block is slidably connected in the chute, the vibration block is close to the lower end of the feeding hopper, a communication groove is formed in the top surface of the vibration block, the communication groove is used for the plastic particles to pass through, a reciprocating mechanism is arranged on the cylinder, the reciprocating mechanism is used for driving the vibration block to slide back and forth in the sliding groove, the reciprocating mechanism can be separated from the vibration block, a limiting piece for limiting the movement of the vibration block is arranged on the feeding hopper.

[0007] The utility model is further provided as follows: the reciprocating mechanism comprises a mounting frame, a sliding cavity is formed in the mounting frame, one end of the sliding cavity communicates with the side of the mounting frame facing the feeding hopper, a driving block is arranged in the sliding cavity, a driving groove is formed in the center of the driving block, upper driving teeth and lower driving teeth are respectively arranged on the upper inner wall and the lower inner wall of the driving groove, a gear wheel is further arranged in the sliding cavity, and the gear wheel only meshes with the upper driving teeth or only meshes with the lower driving teeth in the rotating process.

[0008] The utility model is further provided as follows: a driving motor is fixedly installed on one side of the mounting frame, the output shaft of the driving motor extends into the sliding cavity and is connected with the gear wheel by a key.

[0009] The utility model further sets up: still integrative on the drive block has the connecting strip, the connecting strip always exposes outside the sliding chamber with one end of drive block back, the connecting strip is fixedly connected with the vibration block through the screw.

[0010] The utility model further sets up: the side wall of feeding hopper is equipped with the threaded hole that communicates with the chute, the restriction piece is the resistance to touch post that is screwed in the threaded hole, one end of resistance to touch post is used for the outer wall of resistance to touch post of vibration block.

[0011] The utility model further sets up: resistance to touch post back vibration block one end fixedly connected with the rotary knob.

[0012] Summarized above, the utility model has following beneficial effect:

[0013] The setting of reciprocating mechanism makes vibration block move back and forth in the feeding hopper, thereby make the plastic particles in the feeding hopper collide, slide or rearrange, reduce the adhesion or friction between them, help plastic particles to loosen, make it flow more smoothly, reduce the situation of plastic particle blockage;

[0014] When the feeding hopper needs to be cleaned, people first drive the restriction piece to make vibration block and chute not relatively move, then remove the connecting structure of vibration block and reciprocating mechanism, the setting of restriction piece makes the position of subsequent vibration block in the chute not change, so that subsequent vibration block does not need to adjust the position in the chute, convenient vibration block and reciprocating mechanism connection. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structural schematic diagram of the utility model;

[0016] Figure 2 It is Figure 1 The enlarged view of A part in middle;

[0017] Figure 3 It is the partial sectional view of the utility model;

[0018] Figure 4 It is Figure 3 The enlarged view of B part in middle.

[0019] In the drawing: 1, machine cylinder;2, feeding hopper;3, chute;4, vibration block;5, mounting frame;6, drive block;7, upper drive tooth;8, lower drive tooth;9, drive motor;10, connecting strip;11, resistance to touch post;12, rotary knob. DETAILED DESCRIPTION

[0020] The utility model is described in detail below in combination with the drawings and examples.

[0021] Single screw extruder, such as Figure 1 , Figure 2 and Figure 4 shown, comprising a barrel 1 and a feeding hopper 2, the feeding hopper 2 is fixedly connected on the barrel 1, the feeding hopper 2 and the barrel 1 are connected through flanges, a chute 3 is opened on the outer wall of the feeding hopper 2 and communicates with the inside of the feeding hopper 2, a vibrating block 4 is slidably connected in the chute 3, the vibrating block 4 is close to the lower end of the feeding hopper 2, a communication groove is opened on the top surface of the vibrating block 4, the communication groove is used for the plastic particles to pass through, the communication groove will not always be exposed, a reciprocating mechanism is arranged on the barrel 1, the reciprocating mechanism is used to drive the vibrating block 4 to slide forward and backward in the sliding groove, the reciprocating mechanism can be separated from the vibrating block 4, a limiting piece is arranged on the feeding hopper 2 and used to limit the movement of the vibrating block 4, after people pour the plastic particles into the feeding hopper 2, people can drive the reciprocating mechanism to move, at this time the reciprocating mechanism can drive the vibrating block 4 to move forward and backward, the plastic particles will collide, slide or rearrange each other due to the movement of the vibrating block 4, reduce the adhesion or friction between them, help the plastic particles to loosen and make them flow more smoothly, ensure that the plastic particles in the feeding hopper 2 can smoothly fall into the barrel 1, when people need to disassemble the feeding hopper 2 and the barrel 1, people first drive the limiting piece to make the vibrating block 4 not relatively move with the chute 3, then disassemble the connecting structure of the vibrating block 4 and the reciprocating mechanism, the limiting piece is arranged to make the position of the vibrating block 4 in the chute 3 not change in the future, so that the position of the vibrating block 4 in the chute 3 does not need to be adjusted in the future, facilitate the connection of the vibrating block 4 and the reciprocating mechanism.

[0022] As Figure 3 and Figure 4As shown, the reciprocating mechanism includes a mounting frame 5, a sliding cavity is formed in the mounting frame 5, one end of the sliding cavity is communicated with the side of the mounting frame 5 facing the feeding hopper 2, a driving block 6 is arranged in the sliding cavity, a driving groove is formed in the center of the driving block 6, the shape of the driving groove is in the shape of a waist, upper driving teeth 7 and lower driving teeth 8 are respectively arranged on the upper inner wall and the lower inner wall of the driving groove, a gear is also arranged in the sliding cavity, the gear only meshes with the upper driving teeth 7 or only meshes with the lower driving teeth 8 during rotation, the meshing teeth on the gear are concentrated on 1 / 4 of the gear, during clockwise rotation of the gear, the gear first meshes with the upper driving teeth 7, then drives the driving block 6 to move towards the feeding hopper 2, after the gear disengages from the upper driving teeth 7, the vibration block 4 does not move, until the gear rotates to mesh with the lower gear, the gear drives the driving block 6 to move away from the feeding hopper 2, the reciprocating mechanism can always move back and forth, thereby driving the forward and backward movement of the vibration block 4, realizing the driving function of the reciprocating mechanism, a driving motor 9 is fixedly arranged on one side of the mounting frame 5, the output shaft of the driving motor 9 extends into the sliding cavity and is connected with the gear, the driving motor 9 drives the rotation of the gear, which can ensure that the reciprocating mechanism can continuously reciprocate, ensuring the falling efficiency of the plastic particles, and the moving frequency of the vibration block 4 can be controlled by changing the power of the driving motor 9.

[0023] As shown in Figure 1 and Figure 2 , a connecting strip 10 is also integrally formed on the driving block 6, one end of the connecting strip 10 away from the driving block 6 is always exposed outside the sliding cavity, the connecting strip 10 is fixedly connected with the vibration block 4 through a screw, this arrangement makes the connecting strip 10 always exposed outside the sliding cavity no matter how far the driving motor 9 rotates, which is convenient for people to install and fix, and in addition, the screw fixing method not only facilitates the disassembly of the connecting strip 10 and the vibration block 4, but also can ensure the connection strength between the two, the distance from the driving block 6 to the opening of the sliding cavity is less than the length of the connecting strip 10, a threaded hole is formed in one side wall of the feeding hopper 2 and communicated with the chute 3, the limiting piece is a resisting column 11 screwed in the threaded hole, one end of the resisting column 11 is used to abut against the outer wall of the vibration block 4, by tightening the resisting column 11, the resisting column 11 can push the vibration block 4 to abut against one inner wall of the chute 3, so that the vibration block 4 is not easy to move, the end of the resisting column 11 away from the vibration block 4 is fixedly connected with a rotating knob 12, the rotating knob 12 is arranged to facilitate people to hold, making the rotation of the resisting column 11 more convenient.

[0024] The above merely is preferred implementation manner of the present application, the protection scope of the present application is not only limited to the above examples, and belongs to the technical scheme under the idea of the present application all belongs to the protection scope of the present application. It should be pointed out that, for ordinary skilled person in the art, under the premise of not departing from the principle of the present application, some improvements and decorations, these improvements and decorations should also be considered as the protection scope of the present application.

Claims

1. A single screw extruder comprising a barrel (1) and a feeding hopper (2) fixedly connected to the barrel (1), characterized in that: The outer wall of the feeding hopper (2) is provided with a chute (3) communicated with the inside of the feeding hopper (2), the chute (3) is slidably connected with a vibrating block (4), the vibrating block (4) is close to the lower end of the feeding hopper (2), the top surface of the vibrating block (4) is provided with a communicating groove, the communicating groove is used for the plastic particles to pass through, the machine barrel (1) is provided with a reciprocating mechanism, the reciprocating mechanism is used for driving the vibrating block (4) to slide forward and backward in the sliding groove, the reciprocating mechanism can be separated from the vibrating block (4), the feeding hopper (2) is provided with a limiting piece used for limiting the movement of the vibrating block (4).

2. Single screw extruder according to claim 1, characterized in that: The reciprocating mechanism comprises a mounting frame (5), the mounting frame (5) is provided with a sliding cavity, one end of the sliding cavity is communicated with the side of the mounting frame (5) facing the feeding hopper (2), the sliding cavity is provided with a driving block (6), the center of the driving block (6) is provided with a driving groove, the upper inner wall and the lower inner wall of the driving groove are respectively provided with an upper driving tooth (7) and a lower driving tooth (8), the sliding cavity is further provided with a gear, the gear is only engaged with the upper driving tooth (7) or only engaged with the lower driving tooth (8) during rotation.

3. Single screw extruder according to claim 2, characterized in that: One side of the mounting frame (5) is fixedly provided with a driving motor (9), the output shaft of the driving motor (9) extends into the sliding cavity and is key-connected with the gear.

4. The single screw extruder of claim 2, wherein: The driving block (6) is further integrally formed with a connecting strip (10), one end of the connecting strip (10) away from the driving block (6) is always exposed outside the sliding cavity, the connecting strip (10) is fixedly connected with the vibrating block (4) through a screw.

5. The single screw extruder of claim 1, wherein: One side wall of the feeding hopper (2) is provided with a threaded hole communicated with the chute (3), the limiting piece is a resisting column (11) screwed in the threaded hole, one end of the resisting column (11) is used for abutting against the outer wall of the vibrating block (4).

6. Single screw extruder according to claim 5, characterized in that: The end of the resisting column (11) away from the vibrating block (4) is fixedly connected with a rotating knob (12).

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