Straw rounding mechanism

Abstract

The utility model discloses a straw rounding mechanism which comprises a lower plate body, an upper plate body, a conveying belt and an air supply pipe, the upper plate body is installed on the lower plate body through two oppositely-arranged side plates, and a rounding channel is defined by the two side plates of the upper plate body and the lower plate body. The conveying belt horizontally penetrates through the rounding channel, the top end belt wall of the conveying belt is attached to the top wall of the lower plate body so that the conveying belt can drive the straw to enter and exit from the rounding channel when acting, and the distance between the bottom wall of the upper plate body and the top conveying face of the conveying belt is equal to the outer diameter of the straw passing through the rounding channel. The air supply pipe is installed on the upper plate body and communicates with the air heater so as to convey hot air into the rounding channel. According to the straw rounding mechanism provided by the utility model, the straw sent out by the crystallizer is sent into the rounding channel through the conveyor belt, and the first air supply pipe sends hot air to the front end of the rounding channel, so that the setting time of the straw is shortened, and the straw is rounded and shaped when passing through the front half section of the rounding channel.

Description

Technical Field

[0001] The utility model relates to the technical field of straw shaping, in particular to a straw rounding mechanism. Background Art

[0002] The Chinese utility model patent with the application number CN202221748177.6 discloses a shaping device for a PLA straw crystallizer, including a lower shaping and cooling plate and an upper shaping and cooling plate. The lower shaping and cooling plate is arranged at the straw outlet of the PLA straw crystallizer, and the PLA straw can fall onto the lower shaping and cooling plate; the shaping belt is installed on the side plate through a tensioning roller and a shaping driving roller, the upper shaping and cooling plate is installed on the side plate, the side plate is installed at the output end of the lifting mechanism, the lifting mechanism is installed on the frame, and the lifting mechanism drives the upper shaping and cooling plate and the shaping belt to lift through the side plate. It can quickly cool down and shape the PLA straw coming out of the PLA straw crystallizer, and is convenient to adjust the gap between the lower shaping and cooling plate and the upper shaping and cooling plate. It can shape PLA straws with different diameters, the speed is adjustable, it can improve the shaping effect of PLA straws, improve the shaping efficiency, roundness and straightness of PLA straws, and has a good cooling effect. The structure design is simple and reasonable, easy to use and assemble, and has strong practicability.

[0003] However, the above patent has the following disadvantages. When the straw sent out from the crystallizer outlet falls on the lower shaping and cooling plate, it has already started to cool through the cooling plate, and the cooled straw has been shaped. When the shaped straw passes through the shaping device again, it is already being reshaped, resulting in a poor shaping effect. Summary of the Utility Model

[0004] To solve the technical problems in the background art, the utility model proposes a straw rounding mechanism.

[0005] A straw rounding mechanism proposed by the utility model includes: a lower plate body, an upper plate body, a conveyor belt, and an air supply pipe. The upper plate body is installed on the lower plate body through two oppositely arranged side plates. The two side plates of the upper plate body and the lower plate body enclose a rounding channel. The conveyor belt horizontally penetrates through the rounding channel, and the top belt wall of the conveyor belt is attached to the top wall of the lower plate body so that the conveyor belt can drive the straw in and out of the rounding channel when it moves. The distance between the bottom wall of the upper plate body and the top conveying surface of the conveyor belt is equal to the outer diameter of the straw passing through the rounding channel. The air supply pipe is installed on the upper plate body and is communicated with the heating mechanism in the crystallizer to convey hot air into the rounding channel.

[0006] Preferably, a first cavity is opened in the upper plate body, and a plurality of first diversion holes communicating the first cavity with the rounding channel are uniformly opened on the cavity wall of the first cavity. The air supply pipe is communicated with the first cavity.

[0007] Preferably, the distance between the bottom wall of the upper plate body and the top conveying surface of the conveyor belt is adjustable.

[0008] Preferably, the first air supply duct is specifically a corrugated pipe.

[0009] A straw rounding mechanism proposed by the present utility model further includes a second air supply duct installed on the upper plate body. There is also a second cavity inside the upper plate body. Second diversion holes communicating the second cavity with the rounding channel are provided on the cavity wall of the second cavity. The second air supply duct communicates with the second cavity and is connected to an external air cooler, and the second cavity is located at the front end of the first cavity in the conveying direction of the conveyor belt.

[0010] Preferably, a third cavity is also provided inside the lower plate body.

[0011] For the straw rounding mechanism proposed by the present utility model, the straws sent out by the crystallizer are fed into the rounding channel through the conveyor belt. The first air supply duct sends hot air to the front end of the rounding channel, slowing down the straw shaping time, so that the straws are rounded and shaped when passing through the first half of the rounding channel. When the straws enter the second half of the rounding channel, the setting of the second air supply duct speeds up the cooling efficiency of the straws and enables them to be quickly shaped. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a front sectional view of the overall structure of a straw rounding mechanism proposed by the present utility model;

[0013] Figure 2 is a side view of the overall structure of a straw rounding mechanism proposed by the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] Referring to Figure 1-2 , a straw rounding mechanism proposed by the present utility model includes: a lower plate body 1, an upper plate body 2, a conveyor belt 3, and a first air supply duct 4. The upper plate body 2 is installed on the lower plate body 1 through two oppositely arranged side plates. The two side plates of the upper plate body 2 and the lower plate body 1 enclose a rounding channel. The conveyor belt 3 horizontally penetrates through the rounding channel, and the top belt wall of the conveyor belt 3 is attached to the top wall of the lower plate body 1 so that when the conveyor belt 3 operates, it can drive the straws in and out of the rounding channel. The distance between the bottom wall of the upper plate body 2 and the top conveying surface of the conveyor belt 3 is equal to the outer diameter of the straws passing through the rounding channel. The first air supply duct 4 is installed on the upper plate body 2 and is connected to the heating mechanism in the crystallizer to convey hot air into the rounding channel.

[0015] The straw rounding mechanism proposed by the present utility model is installed at the discharge end of the straw crystallizer, and the feeding end of the conveyor belt 3 is connected to the outlet of the straw crystallizer to receive the straws sent out by the straw crystallizer.

[0016] The usage process of the straw rounding mechanism is as follows: The conveyor belt 3 feeds the straws into the rounding channel. The first air supply pipe 4 conveys hot air into the rounding channel to slow down the straw shaping time. The conveyor belt 3 and the upper plate body 2 rub the straws into a round shape together. The lower plate body 2 supports the conveyor belt 3 to prevent excessive elasticity of the conveyor belt 3 from affecting the straw rounding process.

[0017] In the above embodiment, the width of the rounding channel is greater than the length of the straw.

[0018] It should be further noted that, in order to enable the hot air to enter the rounding channel evenly, a first cavity 21 is formed in the upper plate body 2. A plurality of first diversion holes 211 communicating the first cavity 21 with the rounding channel are evenly formed on the cavity wall of the first cavity 21. The first air supply pipe 4 is communicated with the first cavity 21.

[0019] To meet the usage requirements of straws with different diameters, the distance between the bottom wall of the upper plate body 2 and the top conveying surface of the conveyor belt 3 is adjustable.

[0020] The upper plate body 2 can be installed on the side plate through adjusting bolts, and the distance between the bottom wall of the upper plate body 2 and the top conveying surface of the conveyor belt 3 is adjusted by the adjusting bolts.

[0021] To prevent the installation of the first air supply pipe 4 from being affected when adjusting the height of the upper plate body 2, the first air supply pipe 4 is specifically a corrugated pipe.

[0022] To improve the cooling efficiency of the rounded straws, the straw rounding mechanism proposed by the present utility model further includes a second air supply pipe 5 installed on the upper plate body 2. The upper plate body 2 further has a second cavity 22. Second diversion holes 221 communicating the second cavity 22 with the rounding channel are formed on the cavity wall of the second cavity 22. The second air supply pipe 5 is communicated with the second cavity 22 and is connected to an external cold air blower, and the second cavity 22 is located at the front end of the first cavity 21 in the conveying direction of the conveyor belt 3.

[0023] A third cavity is further formed in the lower plate body 1.

[0024] In the above embodiment, the upper plate body 2 is made of a transparent material.

[0025] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent replacements or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A straw rounding mechanism, characterized in that: include: The invention relates to a lower plate body (1), an upper plate body (2), a conveyor belt (3), and a first air supply pipe (4). The upper plate body (2) is mounted on the lower plate body (1) through two oppositely arranged side plates. The two side plates of the upper plate body (2) and the lower plate body (1) enclose a full circular channel. The conveyor belt (3) runs horizontally through the full circular channel. The top belt wall of the conveyor belt (3) fits with the top wall of the lower plate body (1) so that the conveyor belt (3) can drive the suction pipe to enter and exit the full circular channel when it moves. The distance between the bottom wall of the upper plate body (2) and the top conveying surface of the conveyor belt (3) is equal to the outer diameter of the suction pipe passing through the full circular channel. The first air supply pipe (4) is mounted on the upper plate body (2) and is connected to the heating mechanism in the crystallizer to transport hot air into the full circular channel.

2. The straw rounding mechanism according to claim 1, characterized in that: A first cavity (21) is provided in the upper plate body (2), a plurality of first flow guide holes (211) connecting the first cavity (21) and the full-circle channel are evenly provided on the cavity wall of the first cavity (21), and the air supply pipe (4) is connected to the first cavity (21).

3. The straw rounding mechanism according to claim 1, characterized in that: The distance between the bottom wall of the upper plate body (2) and the top conveying surface of the conveyor belt (3) is adjustable.

4. The straw rounding mechanism according to claim 3, characterized in that: The first air supply pipe (4) is specifically a corrugated pipe.

5. The straw rounding mechanism according to claim 2, characterized in that: It also includes a second air supply pipe (5) installed on the upper plate body (2), the upper plate body (2) also has a second cavity (22), the cavity wall of the second cavity (22) is provided with a second guide hole (221) connecting the second cavity (22) and the full-circular channel, the second air supply pipe (5) is connected to the second cavity (22) and is connected to an external air cooler, and the second cavity (22) is located at the front end of the first cavity (21) in the conveying direction of the conveyor belt (3).

6. The straw rounding mechanism according to claim 5, characterized in that: A third cavity is also provided in the lower plate body (1).

Images