Novel three-screw extrusion tabletting device

Abstract

The utility model discloses a novel three-screw extruding and tabletting device, which belongs to the technical field of extruding and tabletting devices, and solves the problem that the edge of a discharged rubber sheet is not tidy due to the fact that rubber overflows towards two sides of a tabletting roller when the existing device is used for tabletting, the novel three-screw extruding and tabletting device comprises a material barrel, and a tabletting component is arranged on the side surface of the material barrel. The tablet pressing assembly comprises a tablet pressing plate fixedly installed on the side face of the material barrel, a tablet pressing groove communicated with the discharging hole is formed in the side face of the tablet pressing plate, a lower tablet pressing roller and an upper tablet pressing roller are arranged in the tablet pressing groove, and a lower material blocking disc and an upper material blocking disc are fixedly installed at the two ends of the lower tablet pressing roller and the two ends of the upper tablet pressing roller respectively. A clamping groove is formed in the arc face of the lower material blocking disc, the upper material blocking disc is movably arranged in the clamping groove in a sleeved mode, and due to the fact that the upper material blocking disc is arranged in the clamping groove in a sleeved mode, the purpose of preventing rubber from overflowing from the two sides of the lower sheet pressing roller and the two sides of the upper sheet pressing roller is achieved, and the edges of discharged rubber sheets are more orderly.

Description

Technical Field

[0001] The utility model relates to the technical field of extrusion tableting devices, in particular to a novel three-screw extrusion tableting device. Background Art

[0002] In the process of making rubber into film, an open mixing mill is needed to prepare plasticized rubber, mixed rubber or hot-mixed rubber and produce sheets. When producing sheets, the rubber needs to be pressed into films of specific specifications.

[0003] After searching, the application with patent number CN202121796240.9 discloses a novel three-screw extruder tableting device, including a frame, a hopper is arranged on the frame, a mixing chamber is arranged between the hopper and the frame, a screw group is rotatably installed in the mixing chamber, the rear end of the screw group extends out of the mixing chamber and is connected to a driving device, a discharge port is opened at the front end of the mixing chamber, the front end of the screw group extends into the discharge port, and a tableting device is arranged at the front end of the discharge port of the mixing chamber;

[0004] Although the new three-screw extrusion tableting device mixes the materials evenly through the screw group and improves the mixing efficiency, the rubber will overflow to both sides of the tableting roller when the new three-screw extrusion tableting device is tableting, resulting in uneven edges of the film after the film is produced.

[0005] Therefore, we proposed a novel three-screw extruder tableting device. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a novel three-screw extrusion sheeting device, which solves the problem that when the prior device is sheeting, rubber overflows to both sides of the sheeting roller, resulting in uneven edges of the film after the film is produced.

[0007] To achieve the above purpose, the utility model is implemented by the following technical solutions: a novel three-screw extrusion tableting device, comprising a barrel, a feeding hopper is fixedly installed on one side of the top surface of the barrel, and a discharge hole is opened on the side of the barrel;

[0008] A stirring assembly is arranged in the barrel, and a tablet pressing assembly is arranged on the side of the barrel;

[0009] The tablet pressing assembly includes a tablet pressing plate fixedly mounted on the side of the barrel, a tablet pressing groove connected to the discharge hole is provided on the side of the tablet pressing plate, a lower tablet pressing roller and an upper tablet pressing roller are arranged inside the tablet pressing groove, a lower material stop plate and an upper material stop plate are fixedly mounted at both ends of the lower and upper tablet pressing rollers, a clamping groove is provided on the arc surface of the lower material stop plate, and the upper material stop plate is movably sleeved inside the clamping groove.

[0010] Preferably, the lower pressing roller is rotatably mounted on the side wall of the pressing groove through a bearing ring, and two upper pressing rollers and two lower pressing rollers are provided, and the upper pressing roller is located directly above the lower pressing roller. By providing two upper pressing rollers and two lower pressing rollers, the film can be rolled twice to make its surface smoother.

[0011] Preferably, a cylinder is fixedly installed on the top surface of the pressing plate, and a U-shaped plate is fixedly installed on the output end of the cylinder passing through the top surface of the pressing plate, and an upper pressing roller is rotatably mounted on the side wall of the U-shaped plate through a bearing ring, wherein the U-shaped plate and the upper pressing roller are driven up and down by the cylinder, and then the distance between the upper pressing roller and the lower pressing roller is adjusted to match the thickness of the film.

[0012] Preferably, the stirring assembly includes a first motor fixedly mounted on the side of the barrel, the output end of the first motor passes through the side wall of the barrel and is fixedly connected to an active conical screw, a driven conical screw is arranged above the active conical screw, the sides of the active conical screw and the driven conical screw are fixedly mounted with gear plates, the gear plates on the side of the active conical screw are meshed with the gear plates on the side of the driven conical screw, the ends of the active conical screw and the driven conical screw away from the first motor are located inside the discharge hole, wherein the active conical screw is driven to rotate by the first motor, and the gear plates on the side of the driven conical screw are meshed with the gear plates on the side of the active conical screw, when the active conical screw rotates, the driven conical screw can be driven to rotate together, thereby stirring the rubber raw materials inside the barrel, and then allowing the rubber raw materials to enter the interior of the tableting groove through the discharge hole.

[0013] Preferably, the stirring assembly also includes a second motor fixedly mounted in the middle of the top surface of the barrel, a turntable is fixedly mounted on the output end of the second motor passing through the top surface of the barrel, and a U-shaped rod is fixedly mounted on the bottom surface of the turntable, wherein the turntable and the U-shaped rod on the bottom surface are driven by the second motor to rotate synchronously, so that the rubber raw material inside the barrel can be fully stirred.

[0014] The utility model provides a novel three-screw extrusion tableting device. It has the following beneficial effects:

[0015] 1. The novel three-screw extrusion tableting device squeezes the rubber raw material entering the tableting groove into a film through the lower tableting roller and the upper tableting roller. Since the upper blocking plate is set inside the clamping groove, the lower blocking plate and the upper blocking plate can block the rubber on both sides of the lower tableting roller and the upper tableting roller, thereby preventing the rubber from overflowing from both sides of the lower tableting roller and the upper tableting roller, which is conducive to making the edge of the film after the film is more neat. The upper blocking plate on the U-shaped plate and its side wall is driven up and down by the cylinder to adjust the spacing between the upper tableting roller and the lower tableting roller, so as to produce films of different thicknesses, thereby solving the problem that the rubber overflows to both sides of the tableting roller during tableting in the existing device, resulting in uneven edges of the film after the film is produced.

[0016] 2. The novel three-screw extrusion tableting device drives the turntable and the U-shaped rod on the bottom to rotate through the second motor, and then preliminarily stirs the rubber raw materials put into the barrel, and then drives the active conical screw to rotate through the first motor. Through the structure in which the gear plate on the side of the active conical screw and the gear plate on the side of the driven conical screw are meshed, when the active conical screw rotates, the driven conical screw can be driven to rotate at the same time, and then the rubber raw materials inside the barrel are further stirred, thereby achieving the purpose of fully and evenly stirring the rubber raw materials in the barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the tablet pressing assembly of the utility model;

[0020] Figure 4 This is a schematic diagram of the U-shaped plate structure of the utility model.

[0021] In the figure: 1. material barrel; 11. discharge hole; 2. feeding hopper; 3. stirring assembly; 31. first motor; 32. active conical screw; 33. gear plate; 34. driven conical screw; 35. second motor; 36. turntable; 37. U-shaped rod; 4. tabletting assembly; 41. tabletting plate; 42. tabletting groove; 43. lower tabletting roller; 44. upper tabletting roller; 45. cylinder; 46. U-shaped plate; 47. upper material stop plate; 48. lower material stop plate; 49. clamping groove. DETAILED DESCRIPTION

[0022] 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.

[0023] Embodiment 1:

[0024] like Figure 1-4 As shown: it includes a material barrel 1, a feeding hopper 2 is fixedly installed on one side of the top surface of the material barrel 1, a discharge hole 11 is opened on the side of the material barrel 1, a stirring component 3 is arranged in the middle of the material barrel 1, and a tabletting component 4 is arranged on the side of the material barrel 1. The tabletting component 4 includes a tabletting plate 41 fixedly installed on the side of the material barrel 1, and a tabletting groove 42 connected to the discharge hole 11 is opened on the side of the tabletting plate 41. A lower tabletting roller 43 and an upper tabletting roller 44 are arranged inside the tabletting groove 42, and a lower material blocking disk 48 and an upper material blocking disk 47 are fixedly installed at both ends of the lower tabletting roller 43 and the upper tabletting roller 44 respectively. The arc surface of the lower material blocking disk 48 is provided with a clamping groove 49, and the upper material blocking disk 47 is movably sleeved in the inside of the clamping groove 49. The lower tabletting roller 43 is rotatably sleeved on the side wall of the tabletting groove 42 through a bearing ring. Two upper tabletting rollers 44 and two lower tabletting rollers 43 are provided, and the upper tabletting roller 44 is located at the positive side of the lower tabletting roller 43. The upper stopper 47 is mounted on the upper surface of the lower and upper pressing grooves 42, and the rubber material entering the lower and upper pressing grooves 42 is squeezed into a film. Since the upper stopper 47 is mounted on the inner surface of the clamping groove 49, the lower and upper stopper 48 and the upper stopper 47 can block the rubber on both sides of the lower and upper pressing grooves 43 and 44, thereby preventing the rubber from overflowing from both sides of the lower and upper pressing grooves 43 and 44, which is conducive to making the edge of the film after the film is discharged more neat. The upper stopper 47 on the U-shaped plate 46 and its side wall is driven up and down by the cylinder 45 to adjust the spacing between the upper and lower pressing rollers 44 and 43, so as to produce films of different thicknesses.

[0025] Embodiment 2:

[0026] like Figure 1-3As shown: the stirring assembly 3 includes a first motor 31 fixedly mounted on the side of the barrel 1, the output end of the first motor 31 passes through the side wall of the barrel 1 and is fixedly connected to an active conical screw 32, a driven conical screw 34 is arranged above the active conical screw 32, and gear plates 33 are fixedly mounted on the sides of the active conical screw 32 and the driven conical screw 34, the gear plates 33 on the side of the active conical screw 32 are meshed with the gear plates 33 on the side of the driven conical screw 34, and the ends of the active conical screw 32 and the driven conical screw 34 away from the first motor 31 are located inside the discharge hole 11, and the stirring assembly 3 also includes a second motor 35 fixedly mounted on the middle of the top surface of the barrel 1, and the second motor The output end 35 passes through the top surface of the barrel 1 and is fixedly installed with a turntable 36, and the bottom surface of the turntable 36 is fixedly installed with a U-shaped rod 37. The turntable 36 and the U-shaped rod 37 on the bottom surface are driven by the second motor 35 to rotate, and then the rubber raw material put into the barrel 1 is preliminarily stirred, and then the active conical screw 32 is driven to rotate by the first motor 31. The gear plate 33 on the side of the active conical screw 32 is meshed with the gear plate 33 on the side of the driven conical screw 34. When the active conical screw 32 rotates, the driven conical screw 34 can be driven to rotate at the same time, and then the rubber raw material inside the barrel 1 is further stirred, so as to achieve the purpose of fully and evenly stirring the rubber raw material in the barrel 1.

[0027] Working principle and use process of the utility model: When the three-screw extrusion tableting device of the utility model is used, the rubber raw material is put into the inside of the barrel 1 through the feeding hopper 2, and then the second motor 35 is started to drive the turntable 36 and the U-shaped rod 37 on the bottom surface thereof to rotate, and then the rubber raw material put into the barrel 1 is preliminarily stirred, and then the first motor 31 is started to drive the active conical screw 32 to rotate, and the driven conical screw 34 and the active conical screw 32 can be driven to rotate simultaneously through the structure in which the gear plate 33 on the side of the active conical screw 32 is meshed with the gear plate 33 on the side of the driven conical screw 34, so as to further stir the rubber raw material inside the barrel 1, and then make the barrel 1 The internal rubber raw material enters the interior of the pressing groove 42 through the discharge hole 11, and then is squeezed into film by the lower pressing roller 43 and the upper pressing roller 44. Since the upper blocking plate 47 is sleeved inside the clamping groove 49, the lower blocking plate 48 and the upper blocking plate 47 can block the rubber on both sides of the lower pressing roller 43 and the upper pressing roller 44 to prevent the rubber from overflowing from both sides of the lower pressing roller 43 and the upper pressing roller 44. The upper blocking plate 47 on the U-shaped plate 46 and its side wall is driven up and down by the cylinder 45, and the spacing between the upper pressing roller 44 and the lower pressing roller 43 can be adjusted to facilitate the production of films of different thicknesses.

[0028] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A novel three-screw extruder tableting device, comprising a barrel (1), a feeding hopper (2) is fixedly mounted on one side of the top surface of the barrel (1), and a discharge hole (11) is opened on the side of the barrel (1); Features: A stirring assembly (3) is arranged in the barrel (1), and a tablet pressing assembly (4) is arranged on the side of the barrel (1); The tablet pressing assembly (4) comprises a tablet pressing plate (41) fixedly mounted on the side of the barrel (1); a tablet pressing groove (42) connected to the discharge hole (11) is provided on the side of the tablet pressing plate (41); a lower tablet pressing roller (43) and an upper tablet pressing roller (44) are arranged inside the tablet pressing groove (42); a lower material stop plate (48) and an upper material stop plate (47) are fixedly mounted at both ends of the lower tablet pressing roller (43) and the upper material stop plate (44), respectively; a clamping groove (49) is provided on the arc surface of the lower material stop plate (48), and the upper material stop plate (47) is movably sleeved inside the clamping groove (49).

2. A novel three-screw extruder tableting device according to claim 1, characterized in that: The lower sheet pressing roller (43) is rotatably mounted on the side wall of the sheet pressing groove (42) via a bearing ring. Two upper sheet pressing rollers (44) and two lower sheet pressing rollers (43) are provided, and the upper sheet pressing roller (44) is located directly above the lower sheet pressing roller (43).

3. A novel three-screw extruder tableting device according to claim 1, characterized in that: A cylinder (45) is fixedly mounted on the top surface of the tablet pressing plate (41); a U-shaped plate (46) is fixedly mounted on the output end of the cylinder (45) penetrating through the top surface of the tablet pressing plate (41); and an upper tablet pressing roller (44) is rotatably mounted on the side wall of the U-shaped plate (46) via a bearing ring.

4. A novel three-screw extruder tableting device according to claim 1, characterized in that: The stirring assembly (3) comprises a first motor (31) fixedly mounted on the side of the barrel (1); the output end of the first motor (31) penetrates the side wall of the barrel (1) and is fixedly connected to an active conical screw (32); a driven conical screw (34) is arranged above the active conical screw (32); gear plates (33) are fixedly mounted on the sides of the active conical screw (32) and the driven conical screw (34); the gear plates (33) on the side of the active conical screw (32) are meshed with the gear plates (33) on the side of the driven conical screw (34); and the ends of the active conical screw (32) and the driven conical screw (34) away from the first motor (31) are located inside the discharge hole (11).

5. A novel three-screw extruder tableting device according to claim 1, characterized in that: The stirring assembly (3) further comprises a second motor (35) fixedly mounted on the middle of the top surface of the barrel (1); a turntable (36) is fixedly mounted on the output end of the second motor (35) passing through the top surface of the barrel (1); a U-shaped rod (37) is fixedly mounted on the bottom surface of the turntable (36).

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