Plastic pelletizer

Abstract

The present disclosure relates to a plastic pelletizer, and relates to the technical field of plastic pelletizing. The present disclosure includes a machine base, a double-shaft reducer, a cutter, a cutting table and a conveying mechanism; the conveying mechanism includes a transmission shaft, an eccentric pressure wheel, a coil spring and a connecting shaft connecting the eccentric pressure wheel and the coil spring, the connecting shaft is rotatably arranged on the machine base, and is connected to the central end of the coil spring, and the free end of the coil spring is fixed on the machine base; the cutter is connected to an output end of the double-shaft reducer; the transmission shaft is rotatably arranged on the machine base, and the end is transmission-connected to the other output end of the double-shaft reducer; the transmission shaft and the eccentric pressure wheel are arranged oppositely, and a feeding channel for plastic strips to pass through is formed between the two; the cutting table is arranged at one end of the feeding channel close to the cutter, and is used to support the plastic strips; the cutting table and the double-shaft reducer are both installed on the machine base. When plastic strips of different thicknesses pass through the feeding channel, the eccentric pressure wheel makes adaptive adjustments according to the size of the plastic strips under the action of the coil spring, ensuring that the plastic strips can pass through the feeding channel, thereby achieving the effect of improving the cutting efficiency of the pelletizer on the plastic strips.

Description

Technical Field

[0001] The present disclosure relates to the technical field of plastic pelletizing, and in particular to a plastic pelletizing machine. Background Art

[0002] In the plastic extrusion granulation production line, the raw materials for plastic granulation are first melted and extruded into strips from the plastic extruder. The long strips of plastic are cooled by water in a water tank to increase the hardness of the strips, and then enter the pelletizer to be cut by a cutter to form the final plastic particles.

[0003] The existing plastic pelletizer usually uses a conveying mechanism to convey strip plastics of a specific width, so as to convey the strip plastics to the position of the cutter, and the cutter cuts the strip plastics to obtain the final granular product. In the actual processing process, since the existing conveying mechanism cannot clamp and convey strip plastics of different thicknesses, it usually needs to be manually adjusted or replaced to adapt to the size of the strip plastics to be processed, which reduces the pelletizing efficiency of the plastic pelletizer. In view of this, the inventor proposes a plastic pelletizer. Utility Model Content

[0004] The purpose of the present invention is to provide a plastic pelletizer, which can ensure that plastic strips of different thicknesses (sizes) pass through a feeding channel without human intervention, thereby achieving continuous and uninterrupted feeding and improving the pelletizing efficiency of the plastic pelletizer.

[0005] In order to achieve the above-mentioned purpose, the present disclosure provides a plastic pelletizer, which includes a machine base, a double-axis reducer, a cutter, a cutting table and a conveying mechanism; the conveying mechanism includes a transmission shaft, an eccentric pressure wheel, a coil spring and a connecting shaft connecting the eccentric pressure wheel and the coil spring, the connecting shaft is rotatably arranged on the machine base and connected to the center end of the coil spring, and the free end of the coil spring is fixed on the machine base; the cutter is connected to an output end of the double-axis reducer; the transmission shaft is rotatably arranged on the machine base, and the end is transmission-connected to the other output end of the double-axis reducer; the transmission shaft and the eccentric pressure wheel are arranged opposite to each other, and a feeding channel for plastic strips to pass through is formed therebetween; the cutting table is arranged at one end of the feeding channel close to the cutter, and is used to support the plastic strips; the cutting table and the double-axis reducer are both installed on the machine base.

[0006] Optionally, the conveying mechanism also includes a gear transmission group installed on the machine base, and the transmission shaft includes a first transmission shaft and a second transmission shaft, the first transmission shaft and the second transmission shaft are connected through the gear transmission group, and one end of the first transmission shaft away from the gear transmission group passes through the machine base to form a free end; one end of the second transmission shaft away from the gear transmission group is transmission-connected to the dual-axis reducer.

[0007] Optionally, the gear transmission group includes a first transmission gear, a second transmission gear and a third transmission gear connecting the first transmission gear and the second transmission gear, one end of the first transmission shaft is connected to the first transmission gear, and one end of the second transmission shaft is connected to the second transmission gear.

[0008] Optionally, the machine base includes a support plate and a base, the first transmission shaft and the connecting shaft both pass through the support plate and are rotatably arranged with the support plate; the cutter and the dual-axis reducer are respectively located on both sides of the support plate.

[0009] Optionally, it further comprises a collecting hopper provided with a cutting opening and a dropping opening, wherein a collecting hopper cover is arranged on the cutting knife and connected to the supporting plate; the cutting opening is arranged on one side close to the cutting table.

[0010] Through the above technical scheme, during the cutting process of the plastic pelletizer, the plastic strips extruded by the extruder can use the conveying mechanism to convey plastic strips of different thicknesses (sizes), and the eccentric pressure wheel, under the action of the coil spring, keeps the plastic strips in a continuous conveying state to convey the plastic strips to the position of the cutter, and then the cutter cuts the plastic strips to obtain the final granular product, thereby improving the cutting efficiency of the plastic strips by the pelletizer.

[0011] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0013] Figure 1 It is a schematic diagram of the overall structure of a plastic pelletizer in one embodiment of the present disclosure;

[0014] Figure 2 A partial side cross-sectional view of a plastic pelletizer in one embodiment of the present disclosure;

[0015] Figure 3 A front view of a plastic pelletizer in one embodiment of the present disclosure;

[0016] Figure 4 It is a schematic diagram of the internal structure of a gear transmission group in one embodiment of the present disclosure;

[0017] Figure 5 It is a rear view of a plastic pelletizer according to one embodiment of the present disclosure.

[0018] Description of Reference Numerals

[0019] 100. Machine base; 101. Base; 102. Support plate; 110. Double-axis reducer; 120. Cutter; 130. Cutting table; 140. Transmission shaft; 141. First transmission shaft; 142. Second transmission shaft; 150. Eccentric pressure wheel; 160. Coil spring; 170. Connecting shaft; 180. Gear transmission group; 181. First transmission gear; 182. Second transmission gear; 183. Third transmission gear; 190. Collecting hopper; 191. Cutting port; 192. Dropping port; 200. Plastic strip; 210. Feed channel. DETAILED DESCRIPTION

[0020] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0021] In the present disclosure, unless otherwise stated, directional words such as "upper, lower, left, right" are usually defined in terms of the directions of the drawings, and "inner and outer" refer to the inside and outside of the relevant parts. In addition, the terms "first", "second", "third", etc. are only used to distinguish descriptions and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present disclosure, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0023] The present disclosure provides a plastic pelletizer, please refer to Figure 1-Figure 5 The invention comprises a machine base 100, a double-axis reducer 110, a cutter 120, a cutting table 130 and a conveying mechanism; the conveying mechanism comprises a transmission shaft 140, an eccentric pressure wheel 150, a coil spring 160 and a connecting shaft 170 connecting the eccentric pressure wheel 150 and the coil spring 160, the connecting shaft 170 is rotatably arranged on the machine base 100 and connected to the central end of the coil spring 160, and the free end of the coil spring 160 is fixed on the machine base 100; the cutter 120 and the double-axis reducer 110 are connected to each other. An output end is connected; the transmission shaft 140 is rotatably set on the machine base 100, and the end is transmission-connected to the other output end of the dual-axis reducer 110; the transmission shaft 140 and the eccentric pressure wheel 150 are arranged opposite to each other, and a feeding channel 210 for the plastic strip 200 to pass through is formed therebetween; the cutting table 130 is arranged at one end of the feeding channel 210 close to the cutter 120, and is used to support the plastic strip 200; the cutting table 130 and the dual-axis reducer 110 are both installed on the machine base 100.

[0024] In the above technical solution, the cutting table 130 and the conveying shaft 140 jointly provide two fulcrums for the plastic strip 200. At the same time, the conveying shaft 140, driven by the double-axis reducer 110, conveys the plastic strip 200 toward the cutter 120. Since the eccentric pressure wheel 150 is connected to the coil spring 160 fixed on the machine base 100 through the connecting shaft 170, and the conveying shaft 140 and the eccentric pressure wheel 150 are arranged opposite to each other, a feeding channel 210 is formed between the two. When plastic strips 200 of different thicknesses (sizes) are to pass through the feeding channel 210, 10, the thickness (size) of the plastic strip 200 itself will force the eccentric pressing wheel 150 to produce a certain rotation angle to adapt to the thickness (size) of the plastic strip 200; at the same time, the eccentric pressing wheel 150 is always in contact with the plastic strip 200 under the action of the coil spring 160, so that the conveying shaft 140 and the eccentric pressing wheel 150 jointly clamp the plastic strip 200. When the plastic strip 200 passes through the feeding channel 210, the eccentric pressing wheel 150 can press the plastic strip 200 to prevent the plastic strip 200 from shaking when the cutter 120 is working.

[0025] In actual use, after the double-axis reducer 110 starts working, the cutter 120 and the conveying shaft 140 both start to rotate, and the plastic strip 200 enters the feeding channel 210 under the conveying of the conveying shaft 140. At the same time, the eccentric pressure wheel 150 is in constant contact with the plastic strip 200 under the action of the coil spring 160, so that the plastic strip 200 is pressed on the conveying shaft 140 to prevent the plastic strip 200 from slipping with the conveying shaft 140, so that the plastic strip 200 is in a conveying state of constantly moving toward the cutting table 130. After the plastic strip 200 is conveyed to the position of the cutter 120 below the cutting table 130, the cutter 120 cuts the plastic strip 200 to obtain the final granular product. Due to the design of the eccentric pressure wheel 150, the plastic pelletizer can adapt to plastic strips 200 of different thicknesses (sizes), thereby improving the pelletizer's cutting efficiency of the plastic strip 200.

[0026] Optionally, in one embodiment of the present disclosure, please refer to Figure 1 and Figure 2 The conveying mechanism also includes a gear transmission group 180 installed on the machine base 100, and the transmission shaft 140 includes a first transmission shaft 141 and a second transmission shaft 142. The first transmission shaft 141 and the second transmission shaft 142 are connected through the gear transmission group 180. The end of the first transmission shaft 141 away from the gear transmission group 180 passes through the machine base 100 to form a free end; the end of the second transmission shaft 142 away from the gear transmission group 180 is transmission-connected to the dual-axis reducer 110.

[0027] In the above technical solution, since the output shafts of the dual-axis reducer 110 rotate in the same direction when working, the rotation direction of one of the output ends can be changed by setting the gear transmission group 180, so as to ensure that the plastic strip 200 is transmitted to the position of the cutter 120 on the upper surface of the cutting table 130, and then the cutter 120 cuts the plastic strip 200 to obtain the final granular product. In addition, by adjusting the transmission ratio of the gear transmission group 180, it can better adapt to the cutting feed speed of different plastics (general plastics, engineering plastics, special plastics), so that the application range of the entire plastic pelletizer is wider.

[0028] The present disclosure does not specifically limit the specific structure of the gear transmission group 180. As an exemplary embodiment, please refer to Figure 4 The gear transmission group 180 includes a first transmission gear 181, a second transmission gear 182 and a third transmission gear 183 connecting the first transmission gear 181 and the second transmission gear 182. One end of the first transmission shaft 141 is connected to the first transmission gear 181, one end of the second transmission shaft 142 is connected to the second transmission gear 182, and the other end of the second transmission shaft 142 is connected to one end of the dual-axis reducer 110 through a belt.

[0029] As an implementation of the base 100, please refer to Figure 1 and Figure 2 The machine base 100 includes a support plate 102 and a base 101, both of which are arranged in an inverted T-shaped structure. The first transmission shaft 141 and the connecting shaft 170 both pass through the support plate 102 and are rotatably arranged with the support plate 102; the cutter 120 and the dual-axis reducer 110 are respectively located on both sides of the support plate 102, which can reduce the manufacturing cost of the machine base 100 and make the entire plastic pelletizer miniaturized, lightweight and integrated.

[0030] In order to improve the rotation smoothness of the first transmission shaft 141 and the connecting shaft 170, bearings may be optionally provided on the first transmission shaft 141 and the connecting shaft 170. Bearings are an important component in contemporary mechanical equipment, and their main function is to support the mechanical rotating body and reduce the friction coefficient during its movement.

[0031] Optionally, in one embodiment of the present disclosure, please refer to Figure 1 and Figure 2 , and also includes a collecting hopper 190 with a cutting opening 191 and a dropping opening 192. The collecting hopper 190 is covered on the cutter 120 and connected to the support plate 102, so as to play a protective role and prevent the cutter 120 from hurting people; the cutting opening 191 is set on the side close to the cutting table 130. In addition, the collecting hopper 190 can also facilitate workers to collect plastic particles, and it is more convenient and reliable to use.

[0032] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0033] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0034] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A plastic pelletizer, characterized in that: It includes a machine base, a double-axis reducer, a cutter, a cutting table and a conveying mechanism; the conveying mechanism includes a transmission shaft, an eccentric pressure wheel, a coil spring and a connecting shaft connecting the eccentric pressure wheel and the coil spring, the connecting shaft is rotatably arranged on the machine base and connected to the central end of the coil spring, and the free end of the coil spring is fixed on the machine base; the cutter is connected to an output end of the double-axis reducer; the transmission shaft is rotatably arranged on the machine base, and the end is transmission-connected to the other output end of the double-axis reducer; the transmission shaft and the eccentric pressure wheel are arranged opposite to each other, and a feeding channel for plastic strips to pass through is formed therebetween; the cutting table is arranged at one end of the feeding channel close to the cutter, and is used to support the plastic strips; the cutting table and the double-axis reducer are both installed on the machine base.

2. The plastic pelletizer according to claim 1, characterized in that: The conveying mechanism also includes a gear transmission group installed on the machine base, the transmission shaft includes a first transmission shaft and a second transmission shaft, the first transmission shaft and the second transmission shaft are connected through the gear transmission group, and one end of the first transmission shaft away from the gear transmission group passes through the machine base to form a free end; one end of the second transmission shaft away from the gear transmission group is transmission-connected to the dual-axis reducer.

3. The plastic pelletizer according to claim 2, characterized in that: The gear transmission group includes a first transmission gear, a second transmission gear and a third transmission gear connecting the first transmission gear and the second transmission gear. One end of the first transmission shaft is connected to the first transmission gear, and one end of the second transmission shaft is connected to the second transmission gear.

4. The plastic pelletizer according to claim 2 or 3, characterized in that: The machine base includes a support plate and a base. The first transmission shaft and the connecting shaft both pass through the support plate and are rotatably arranged with the support plate. The cutter and the dual-axis reducer are respectively located on both sides of the support plate.

5. The plastic pelletizer according to claim 4, characterized in that: It also includes a collecting hopper with a cutting opening and a dropping opening. The collecting hopper cover is arranged on the cutting knife and connected to the supporting plate. The cutting opening is arranged on one side close to the cutting table.

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