Eliminating mechanism and PLA suction pipe production line with eliminating mechanism

Abstract

The removing mechanism comprises a cutting mechanism, a material guiding channel and a conveying belt which are sequentially arranged in the vertical direction, and the cutting mechanism comprises a cutting knife used for cutting a long pipe and a first motor used for driving the cutting knife to rotate around a driving shaft of the cutting knife. The material guiding channel is formed by sequentially connecting a first plate body, a second plate body, a third plate body and a fourth plate body end to end in a surrounding mode, the second plate body and the fourth plate body are located on the two sides of the conveying belt correspondingly, a through groove is formed in the second plate body, and a material guiding plate matched with the through groove in size is rotationally installed on the groove wall of the bottom of the through groove; the second motor is in driving connection with the material guide plate to drive the material guide plate to be switched between the first state and the second state; according to the removing mechanism, removing is conducted in the process that the long pipe is cut to form the suction pipe, the removing mechanism is simple in structure, and cost can be effectively reduced.

Description

Technical Field

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

[0002] During the modification process by different raw material manufacturers, in order to improve the service performance of PLA straws, different ratios of additives and fillers are added. As a result, during the production process of PLA straws in an extruder, precipitates will appear on the inner and outer sides of the die head of the extruder. When the precipitates accumulate to a certain volume and capacity, they form an irregular mass or block. Before the straws leave the factory, the straws with the mass or block precipitates need to be removed to improve the yield rate of the straws leaving the factory.

[0003] The existing rejection devices usually reject the straws after cutting them, which not only increases the process flow and reduces the production efficiency but also raises the production cost. Summary of the Utility Model

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

[0005] A rejection mechanism proposed by the utility model includes a cutting mechanism, a material guiding channel, and a conveyor belt arranged vertically in sequence. The cutting mechanism includes a cutting knife for cutting a long tube and a first motor for driving the cutting knife to rotate around its driving shaft. The material guiding channel is formed by enclosing and connecting a first plate body, a second plate body, a third plate body, and a fourth plate body in sequence end to end. The second plate body and the fourth plate body are respectively located on both sides of the conveyor belt. A through slot is opened on the second plate body, and a material guiding plate adapted to the size of the through slot is rotatably installed on the bottom wall of the through slot. A second motor is also included, and the second motor is drivingly connected to the material guiding plate to drive the material guiding plate to switch between a first state and a second state.

[0006] Among them, the first state is specifically: the material guiding plate is arranged parallel to the second plate body to block the through slot.

[0007] The second state is specifically: the material guiding plate is located in the material guiding channel to block the material guiding channel, and the material guiding plate is inclined downward towards the second plate body.

[0008] Preferably, when the material guiding plate is in the second state, its top end and side wall can both be attached to the inner wall of the material guiding channel.

[0009] Preferably, the material guiding channel is in the shape of a horn with a flared opening facing upwards.

[0010] Preferably, a storage box is provided below the through slot.

[0011] The PLA straw production line with the above-mentioned rejection mechanism proposed by the present utility model further includes a control unit, an industrial camera installed on the base, and several sets of traction mechanisms for pulling the long tube towards the cutting mechanism. The industrial camera is located at the front end of the cutting mechanism. The control unit is communicatively connected to the industrial camera and is control-connected to the second motor.

[0012] The PLA straw production line with the above-mentioned rejection mechanism proposed by the present utility model further includes a lighting lamp installed on the base and arranged opposite to the industrial camera.

[0013] In the rejection mechanism proposed by the present utility model, when the cutting mechanism cuts the part of the long tube with massive or agglomerated precipitates, the second motor drives the guide plate to move to the second state, so that the cut straws with agglomerated or massive precipitates can be separately stored and conveyed through the through groove from the qualified straws. And this rejection mechanism performs rejection during the process of cutting the long tube into straws. The rejection mechanism has a simple structure and can effectively reduce costs. Description of the Drawings

[0014] Figure 1 is a structural sectional view of a rejection mechanism proposed by the present utility model when the guide plate is in the first state;

[0015] Figure 2 is a structural sectional view of a rejection mechanism proposed by the present utility model when the guide plate is in the second state;

[0016] Figure 3 is a schematic structural view of a PLA straw production line with a rejection mechanism proposed by the present utility model. Detailed Embodiment

[0017] Referring to Figure 1-2 , a rejection mechanism proposed by the present utility model includes a cutting mechanism 1, a guide channel 2, and a conveyor belt 3 arranged vertically in sequence. The cutting mechanism 1 includes a cutting knife for cutting the long tube and a first motor for driving the cutting knife to rotate around its driving shaft. The guide channel 2 is formed by enclosing and connecting a first plate body 21, a second plate body 22, a third plate body, and a fourth plate body 23 in sequence. The second plate body 22 and the fourth plate body 23 are respectively located on both sides of the conveyor belt 3. A through groove is formed on the second plate body 22. A guide plate 4 adapted to the size of the through groove is rotatably installed on the bottom groove wall of the through groove. A second motor is further included, and the second motor is drivingly connected to the guide plate 4 to drive the guide plate 4 to switch between the first state and the second state;

[0018] Among them, the first state is specifically: the guide plate 4 is arranged parallel to the second plate body 22 to block the through groove;

[0019] The second state is specifically as follows: The material guiding plate 4 is located in the material guiding channel 2 to block the material guiding channel 2, and the material guiding plate 4 is inclined downward toward the second plate body 22.

[0020] It should be further noted that the cutting blade extends along the radial direction of the driving shaft. The driving shaft is arranged parallel to the long pipe to be cut, and the long pipe to be cut is located on the rotation path of the cutting blade, so that the cutting blade can cut the long pipe during rotation.

[0021] The using process of the rejection mechanism proposed by the present utility model is specifically as follows: During normal use, the material guiding plate 4 is in the first state. The straws formed after the long pipes are cut by the cutting mechanism 1 fall through the material guiding channel 2 onto the conveyor belt 3 and are sent out. When the part of the long pipe with massive or agglomerated precipitates is conveyed to the side of the cutting mechanism 1 for cutting, the second motor drives the material guiding plate 4 to switch from the first state to the second state. At this time, the straws with massive or agglomerated precipitates are cut and slide down through the material guiding plate 4, and are removed by falling through the through groove.

[0022] In the above embodiment, when the material guiding plate 4 is in the second state, its top end and side wall can be attached to the inner wall of the material guiding channel 2, and the material guiding channel 2 is in the shape of a horn with a flared opening facing upward.

[0023] To facilitate receiving unqualified straws, a storage box 5 is provided below the through groove.

[0024] Refer to Figure 3 , A PLA straw production line with the above rejection mechanism proposed by the present utility model further includes a control unit, an industrial camera 6 installed on the base, and several groups of traction mechanisms 7 for pulling the long pipes toward the cutting mechanism 1. The industrial camera 6 is located at the front end of the cutting mechanism 1. The control unit is communicatively connected to the industrial camera 6 and is control-connected to the second motor.

[0025] The traction mechanism 7 includes traction rollers arranged oppositely in the vertical direction and a driving unit for driving the traction rollers to rotate toward the cutting mechanism 1. There is a traction channel for the long pipes to pass between the two traction rollers. When the driving unit drives the two traction rollers to rotate, the friction between the traction rollers and the long pipes drives the long pipes to move toward the cutting mechanism 1.

[0026] To facilitate detecting whether the long pipes have impurities, a lighting lamp 8 is installed on the base and arranged opposite to the industrial camera 6.

[0027] When the long tube passes through the lighting lamp 8, the industrial camera 6 takes pictures of the long tube to detect whether there are blocky or clumpy precipitates, and transmits the detection result to the control unit in real time. When there are no blocky or clumpy precipitates in the long tube, the control unit controls the second motor to drive the guide plate 4 to be in the first state. When it is detected that the long tube has blocky or clumpy precipitates, when the part of the long tube with blocky or clumpy precipitates moves to the side of the cutting mechanism 1, the control unit controls the second motor to drive the guide plate 4 to be in the second state. After cutting off the outer ring of the long tube with impurities, the control unit controls the second motor to drive the guide plate 4 to return to the first state.

[0028] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, with equivalent substitution or change, should be covered within the protection scope of the present invention.

Claims

1. A rejection mechanism, characterized in that: The invention comprises a cutting mechanism (1), a material guide channel (2), and a conveyor belt (3) which are arranged in sequence in a vertical direction. The cutting mechanism (1) comprises a cutting knife for cutting a long tube and a first motor for driving the cutting knife to rotate around its driving shaft. The material guide channel (2) is formed by a first plate body (21), a second plate body (22), a third plate body, and a fourth plate body (23) which are connected end to end in sequence and enclosed. The second plate body (22) and the fourth plate body (23) are respectively located on both sides of the conveyor belt (3). A through groove is formed on the second plate body (22). A material guide plate (4) which is adapted to the size of the through groove is rotatably mounted on the bottom groove wall of the through groove. The invention also comprises a second motor, which drives the material guide plate (4) to switch between a first state and a second state. The first state is specifically: the guide plate (4) and the second plate body (22) are arranged in parallel to form a blockage for the through groove; The second state is specifically: the material guide plate (4) is located in the material guide channel (2) to block the material guide channel (2), and the material guide plate (4) is inclined downward in the direction of the second plate body (22).

2. A rejection mechanism according to claim 1, characterized in that: When the material guide plate (4) is in the second state, its top end and side wall can be in contact with the inner wall of the material guide channel (2).

3. A rejection mechanism according to claim 2, characterized in that: The material guiding channel (2) is in the shape of a trumpet with its mouth expanded upward.

4. The rejection mechanism according to claim 1, characterized in that: A material storage box (5) is provided below the through slot.

5. A PLA straw production line having a rejection mechanism as claimed in any one of claims 1 to 4, characterized in that: It also includes a control unit installed on a base, an industrial camera (6), and a plurality of traction mechanisms (7) for traction of the long tube toward the cutting mechanism (1); the industrial camera (6) is located at the front end of the cutting mechanism (1); the control unit is connected to the industrial camera (6) for communication and control of the connection with the second motor.

6. The PLA straw production line according to claim 5, characterized in that: It also includes an illumination lamp (8) which is mounted on the base and arranged opposite to the industrial camera (6).

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