Miniature double-screw extruder

Abstract

The utility model relates to the technical field of screw extruders, in particular to a miniature double-screw extruder which comprises a shell, a baffle, an extrusion screw and a restraining assembly, the baffle is in bolted connection with the inner wall of the shell, the extrusion screw is arranged on the inner wall of the shell and rotationally connected with the inner wall of the baffle, a protective cover is installed on the side surface of the shell, and the restraining assembly is arranged on the baffle. A motor is fixedly connected to the side surface of the protective cover, the driving end of the motor is in bolted connection with the extrusion screw rod, an auxiliary assembly is arranged on the surface of the shell and comprises a supporting foot, the restraining assembly is arranged on the side surface of the supporting foot, the restraining assembly comprises an assembling plate, and the assembling plate is fixedly connected with the side surface of the supporting foot. According to the utility model, the auxiliary assembly and the restraining assembly are arranged, so that the equipment can be limited on a table top, the problems that the equipment needs to be held by an operator and is difficult to operate normally due to the fact that the equipment is easy to shake in use when being used are reduced, and the stability and the use effect of the equipment are further improved.

Description

Technical Field

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

[0002] A twin-screw extruder is a device used for processing plasticized materials. During the material processing process, it is often necessary to use a twin-screw extruder to extrude the material in order to improve the production efficiency of the product processing.

[0003] Prior art such as the utility model with publication number CN211868574U discloses a miniature twin-screw extruder, which adopts a device main body, the upper end of the outer side wall of the device main body is fixedly connected with a feed port, a first gear and a second gear are arranged on the right side of the device main body, the first gear is meshed with the second gear, the centers of the first gear and the second gear are penetrated with a rotating shaft, a rotating motor is installed at the right end of the rotating shaft located below, mounting blocks are installed at the left ends of the two rotating shafts, screws are fixedly connected to the left sides of the two mounting blocks, and industrial heating pads are movably connected to the front and rear sides of the outer wall of the device main body; the material is put into the device main body through the feed port, the rotating motor is started to make the first gear drive the second gear to rotate, and then drive the two screws to rotate, and the material is rotated and pushed to the left side of the device main body, the industrial heating pad heats the material to melt and extrude it into the mold, after the experiment is completed, the mounting block and the rotating shaft are disassembled, and the inside of the device main body is cleaned, so as to solve the problem that the existing equipment is large in size and complex in structure, and is therefore not convenient for use in the laboratory.

[0004] The inventors have discovered in their daily work that in the process of using a twin-screw extruder to process materials, there is a problem that the existing micro twin-screw extruder, such as the above-mentioned, is cylindrical in shape. When in use, it is difficult to place it stably on the desktop, so that when the equipment is in use, the operator needs to support the equipment. Since the equipment runs for a long time during processing, the support personnel's arms will become tired, which reduces the support personnel's support strength for the equipment, easily causing the equipment to shake, thereby interfering with the normal use of the equipment. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art that the equipment has a long operating time during processing, which causes fatigue in the arms of the support personnel, reduces the support strength of the support personnel on the equipment, easily causes the equipment to shake, and then interferes with the normal use of the equipment, and proposes a micro twin-screw extruder.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a micro twin-screw extruder, comprising a shell, a baffle, an extrusion screw and a constraint component, the baffle is bolted to the inner wall of the shell, the inner wall of the shell is provided with an extrusion screw, the extrusion screw is rotatably connected to the inner wall of the baffle, a protective cover is installed on the side surface of the shell, the side surface of the protective cover is fixedly connected to a motor, the driving end of the motor is bolted to the extrusion screw, the surface of the shell is provided with an auxiliary component, the auxiliary component comprises a support foot, the constraint component is arranged on the side surface of the support foot, the constraint component comprises an assembly plate, the assembly plate is fixedly connected to the side surface of the support foot, the upper surface of the assembly plate is fixedly connected with a nut, the inner wall of the nut is threadedly connected with an adjusting screw, the lower surface of the adjusting screw is rotatably connected with the extrusion plate, and the lower surface of the extrusion plate is fixedly connected with a suction cup.

[0007] Preferably, a guide column is fixedly connected to the upper surface of the extrusion plate, and the position of the extrusion plate can be constrained by the guide column to ensure that the extrusion plate can be pushed by the adjusting screw.

[0008] Preferably, the adjusting screw passes through the lower surface of the assembly plate, and there are multiple suction cups, which are horizontally arranged with respect to the extrusion plate. By cooperating with the adjusting screw and the nut, the extrusion plate and the suction cup can be pushed downward so that the suction cup is adsorbed on the desktop.

[0009] Preferably, the number of the guide posts is two, and the two guide posts are disposed symmetrically with respect to the adjusting screw.

[0010] Preferably, the auxiliary component also includes a positioning ring, which is bolted to the surface of the outer shell, and the support leg is fixedly connected to the outer arc surface of the positioning ring, and the side surface of the positioning ring is fixedly connected with a connecting plate, and the side surface of the support leg is provided with a slot, and the support leg is located on the inner wall of the slot and is fixedly connected with a connecting frame, and the upper surface of the connecting frame is fixedly connected with a guide sleeve, and the positioning rings on both sides can be connected by the connecting plate, thereby ensuring the stability of the positioning rings on both sides.

[0011] Preferably, there are two positioning rings, which are symmetrically arranged with respect to the connecting plate. The guide sleeve is socketed with the surface of the guide column, and the guide sleeve is fixedly connected to the lower surface of the assembly plate. The guide sleeve can guide the moving direction of the guide column to ensure the stability of the guide column during the movement.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] In the utility model, by setting the auxiliary components and the constraint components, when processing, the material is put into the processing chamber from the feeding port of the shell, the motor switch is turned on, the motor is energized to drive the extrusion screw, the extrusion screw rotates under the drive of the motor, and cooperates with each other to extrude the material to the discharge port, and the material can be discharged from the discharge port under the action of the extrusion screw; when using the equipment, the support foot is placed on the desktop, after the placement is stable, the adjusting screw is rotated clockwise, the adjusting screw and the nut are meshed, and the extrusion plate is pushed downward, and the extrusion plate pushes the suction cup under the action of the adjusting screw, and the suction cup is pushed to the desktop, and after the gas inside the chamber is discharged, it is adsorbed on the desktop, and when the suction cups on both sides are adsorbed on the desktop, the extrusion plate, the adjusting screw, the nut, the assembly plate and the support foot can be cooperated to limit the position of the equipment body, and by setting the auxiliary components and the constraint components, the equipment can be restricted on the desktop, thereby reducing the need for operator support when the equipment is used, and the problem that the equipment is easy to shake during use and is difficult to operate normally, and further improves the stability and use effect of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional structural schematic diagram of a micro twin-screw extruder is proposed for the utility model;

[0015] Figure 2 The utility model provides a schematic diagram of the structure of a micro twin-screw extruder viewed from above;

[0016] Figure 3 A partial structural schematic diagram of a micro twin-screw extruder is proposed for the utility model;

[0017] Figure 4 The utility model proposes a micro twin-screw extruder Figure 3 Schematic diagram of the structure at point A in the middle.

[0018] Legend:

[0019] 1. Shell; 2. Baffle; 3. Extrusion screw; 4. Protective cover; 5. Motor; 6. Auxiliary components; 61. Positioning ring; 62. Support foot; 63. Connecting plate; 64. Connecting frame; 65. Guide sleeve; 7. Constraint component; 71. Assembly plate; 72. Nut; 73. Adjusting screw; 74. Extrusion plate; 75. Suction cup; 76. Guide column. DETAILED DESCRIPTION

[0020] See also Figure 1-4The utility model provides a technical solution: a micro twin-screw extruder, including a shell 1, a baffle 2, an extrusion screw 3 and a constraint component 7, the baffle 2 is bolted to the inner wall of the shell 1, the inner wall of the shell 1 is provided with an extrusion screw 3, the extrusion screw 3 is rotatably connected to the inner wall of the baffle 2, a protective cover 4 is installed on the side surface of the shell 1, a motor 5 is fixedly connected to the side surface of the protective cover 4, the driving end of the motor 5 is bolted to the extrusion screw 3, an auxiliary component 6 is provided on the surface of the shell 1, the auxiliary component 6 includes a support foot 62, and the constraint component 7 is arranged on the side surface of the support foot 62.

[0021] The specific settings and functions of the auxiliary component 6 and the constraint component 7 are described in detail below.

[0022] In this embodiment: the constraint component 7 includes an assembly plate 71, the assembly plate 71 is fixedly connected to the side surface of the support foot 62, the upper surface of the assembly plate 71 is fixedly connected with a nut 72, the inner wall of the nut 72 is threadedly connected with an adjusting screw 73, the lower surface of the adjusting screw 73 is rotatably connected with an extrusion plate 74, and the lower surface of the extrusion plate 74 is fixedly connected with a suction cup 75.

[0023] Specifically, a guide column 76 is fixedly connected to the upper surface of the extrusion plate 74 , and the position of the extrusion plate 74 can be constrained by the guide column to ensure that the extrusion plate 74 can be pushed by the adjusting screw 73 .

[0024] Specifically, the adjusting screw 73 passes through the lower surface of the assembly plate 71 , and there are multiple suction cups 75 , which are arranged horizontally with respect to the pressing plate 74 .

[0025] In this embodiment, by adjusting the cooperation between the screw rod 73 and the nut 72, the extrusion plate 74 and the suction cup 75 can be pushed downward, so that the suction cup 75 is adsorbed on the desktop.

[0026] Specifically, there are two guide posts 76 , and the two guide posts 76 are disposed symmetrically with respect to the adjusting screw 73 .

[0027] In this embodiment: the auxiliary component 6 also includes a positioning ring 61, the positioning ring 61 is bolted to the surface of the outer shell 1, the support leg 62 is fixedly connected to the outer arc surface of the positioning ring 61, the side surface of the positioning ring 61 is fixedly connected with a connecting plate 63, the side surface of the support leg 62 is provided with a slot, the support leg 62 is located on the inner wall of the slot and is fixedly connected with a connecting frame 64, and the upper surface of the connecting frame 64 is fixedly connected with a guide sleeve 65.

[0028] In this embodiment, the positioning rings 61 on both sides can be connected by the connecting plate 63, so as to ensure the stability of the positioning rings 61 on both sides.

[0029] Specifically, there are two positioning rings 61, and the two positioning rings 61 are symmetrically arranged with respect to the connecting plate 63. The guide sleeve 65 is socketed with the surface of the guide column 76, and the guide sleeve 65 is fixedly connected to the lower surface of the assembly plate 71. The guide sleeve 65 can guide the moving direction of the guide column 76 to ensure the stability of the guide column 76 during the movement.

[0030] Working principle: When processing, put the material into the processing chamber from the feeding port of the housing 1, turn on the switch of the motor 5, energize the motor 5 to drive the extrusion screw 3, the extrusion screw 3 rotates under the drive of the motor 5, and cooperates with each other to extrude the material to the discharge port, and the material can be discharged from the discharge port under the action of the extrusion screw 3; when using the equipment, place the support foot 62 on the table, and after it is placed stably, rotate the adjusting screw 73 clockwise, the adjusting screw 73 engages with the nut 72, and pushes the extrusion plate 74 downward, and the extrusion plate 74 is pushed under the action of the adjusting screw 73. The suction cup 75 is pushed against the desktop and is adsorbed on the desktop after the gas inside the chamber is exhausted. When the suction cups 75 on both sides are adsorbed on the desktop, the extrusion plate 74, the adjustment screw 73, the nut 72, the assembly plate 71 and the support foot 62 can be used to limit the position of the device body. By setting the auxiliary component 6 and the constraint component 7, the device can be restricted on the desktop, thereby reducing the need for operator support when the device is in use, and the problem of shaking during use making it difficult for the device to operate normally is reduced, and the stability and use effect of the device are further improved.

Claims

1. A micro twin-screw extruder, comprising a housing (1), a baffle (2), an extrusion screw (3) and a constraint assembly (7), characterized in that: The baffle (2) is bolted to the inner wall of the outer shell (1); the inner wall of the outer shell (1) is provided with an extrusion screw (3); the extrusion screw (3) is rotatably connected to the inner wall of the baffle (2); a protective cover (4) is installed on the side surface of the outer shell (1); a motor (5) is fixedly connected to the side surface of the protective cover (4); the driving end of the motor (5) is bolted to the extrusion screw (3); an auxiliary component (6) is provided on the surface of the outer shell (1); the auxiliary component (6) includes a support foot (62) The constraint component (7) is arranged on the side surface of the support foot (62), and the constraint component (7) includes an assembly plate (71), the assembly plate (71) is fixedly connected to the side surface of the support foot (62), the upper surface of the assembly plate (71) is fixedly connected with a nut (72), the inner wall of the nut (72) is threadedly connected with an adjusting screw (73), the lower surface of the adjusting screw (73) is rotatably connected with an extrusion plate (74), and the lower surface of the extrusion plate (74) is fixedly connected with a suction cup (75).

2. A miniature twin-screw extruder according to claim 1, characterized in that: A guide column (76) is fixedly connected to the upper surface of the extrusion plate (74).

3. A miniature twin-screw extruder according to claim 1, characterized in that: The adjusting screw (73) passes through the lower surface of the assembly plate (71), and the number of the suction cups (75) is multiple, and the multiple suction cups (75) are arranged horizontally with respect to the extrusion plate (74).

4. A miniature twin-screw extruder according to claim 2, characterized in that: The number of the guide posts (76) is two, and the two guide posts (76) are arranged in a left-right symmetrical manner with respect to the adjusting screw rod (73).

5. A miniature twin-screw extruder according to claim 1, characterized in that: The auxiliary component (6) further comprises a positioning ring (61), wherein the positioning ring (61) is bolted to the surface of the housing (1), the support leg (62) is fixedly connected to the outer arc surface of the positioning ring (61), the side surface of the positioning ring (61) is fixedly connected to a connecting plate (63), the side surface of the support leg (62) is provided with a slot, the support leg (62) is located on the inner wall of the slot and is fixedly connected to a connecting frame (64), and the upper surface of the connecting frame (64) is fixedly connected to a guide sleeve (65).

6. A miniature twin-screw extruder according to claim 5, characterized in that: There are two positioning rings (61), which are symmetrically arranged with respect to the connecting plate (63). The guide sleeve (65) is sleeved with the surface of the guide column (76), and the guide sleeve (65) is fixedly connected with the lower surface of the assembly plate (71).

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