PLA straw cutting device

Abstract

The utility model relates to the field of straw cutting, in particular to a PLA straw cutting device which comprises a cutting box body, a rotary cutter and a straw guiding device used for guiding a PLA straw, the rotary cutter is arranged in the cutting box body, and the straw guiding device is arranged on the outer side of the cutting box body. A cutting supporting device is arranged on the cutting box body, the cutting supporting device and the suction pipe guiding device are located on the same straight line, and when the PLA suction pipe penetrates through the suction pipe guiding device and reaches the cutting supporting device, the rotary cutter cuts off the PLA suction pipe between the cutting supporting device and the suction pipe guiding device. According to the PLA straw cutting device disclosed by the utility model, when the rotary cutter is used for cutting the PLA straw, the cutting supporter can play a role in supporting the cutting of the rotary cutter, so that the PLA straw can be cut more accurately, and the phenomenon that the PLA straw is deformed due to the absence of support in the cutting process, or a notch is uneven is avoided.

Description

Technical Field

[0001] The utility model relates to the field of straw cutting, and more specifically, to a PLA straw cutting device. Background Art

[0002] With the increasing demand for the use of PLA straws, PLA straws are currently produced and cut using intelligent equipment, which can reduce the time required for production and speed up production.

[0003] However, with the deepening of application, people have found that in the current PLA straw cutting process, the cutting device often cuts the PLA straw every time the guide extends a section of the PLA straw. Since there are no force points on both sides of the PLA straw, the straw is prone to deformation or uneven cuts during cutting. In addition, the current rotary cutters generally have one knife holder corresponding to one cutting knife. Therefore, when the straw needs to be cut at an angle, two rotary cutters need to be placed at the same time, which increases the complexity of the equipment and increases the production cost of the equipment.

[0004] Therefore, it is necessary to propose a PLA straw cutting device that solves the above problems. Utility Model Content

[0005] The utility model provides a PLA straw cutting device to overcome at least one defect (shortcoming) of the prior art.

[0006] In order to solve the above technical problems, the technical solution of the utility model is as follows: a PLA straw cutting device, comprising a cutting box, a rotary cutter and a straw guiding device for guiding the PLA straw;

[0007] The rotary cutter is arranged in the cutting box, and the straw guide device is arranged outside the cutting box;

[0008] The cutting box is provided with a cutting support, and the cutting support and the straw guide device are in the same straight line. When the PLA straw passes through the straw guide device and reaches the cutting support, the rotary cutter cuts the PLA straw between the cutting support and the straw guide device. By arranging the cutting support on the cutting box and arranging the rotary cutter between the cutting support and the straw guide device, compared with the prior art, when the rotary cutter cuts the PLA straw, the cutting support can support the cutting of the rotary cutter, so that the PLA straw can be cut more accurately, avoiding deformation of the PLA straw or uneven incision due to lack of support during cutting.

[0009] Further, the rotary cutter comprises a rotary driver, a white steel cutter, a carbon steel cutter seat and a cutter tilt adjustment block sequentially arranged on the carbon steel cutter seat;

[0010] The rotary driver is connected to the carbon steel cutter seat;

[0011] The carbon steel cutter seat is provided with a positioning screw for positioning the white steel cutter, and the inner side of the white steel cutter is pressed against the tool tilt adjustment block. By arranging the tool tilt adjustment block on the carbon steel cutter seat and installing the white steel cutter on the tool tilt adjustment block of the carbon steel cutter seat through the positioning screw, the white steel cutter can be arranged on the tool tilt adjustment block with different inclinations as needed to realize the adjustment of the tool angle, which is simple and convenient.

[0012] Furthermore, the inclination angle of the tool inclination adjustment block is 0-45 degrees. In practical applications, the white steel cutter can be set on the tool inclination adjustment block with different inclination angles as needed to adjust the inclination angle of the white steel cutter.

[0013] Furthermore, there is at least one white steel cutter. In practical applications, the number of white steel cutters can be set according to the rotation speed and cutting needs, which is within the protection scope of the present utility model.

[0014] Furthermore, the thickness of the white steel cutter is 0.5-1.5 mm. Since the thickness of the white steel cutter is set to 0.5-1.5 mm, the thickness of the white steel cutter is thinner than that of the existing white steel cutter. Under the high-speed rotation of the rotary cutter, the PLA straw can be cut better.

[0015] Furthermore, the cutting support device includes a support seat, a support ring, a limit support pressing sheet and a wear-resistant pad;

[0016] The support ring is arranged on the support seat, and the position-limiting support pressing sheet is arranged on the top of the support ring;

[0017] The support ring and the straw guide device are in the same straight line;

[0018] The wear-resistant pad is arranged on the inner side of the support ring, and the PLA straw passes through the support ring after passing through the straw guide device. Through the arrangement of the support seat, the limiting support pressing sheet and the support ring, after the PLA straw passes through, when the rotary cutter cuts the PLA straw, the support ring and the limiting support pressing sheet can support the cutting of the PLA straw and provide a force point, thereby facilitating the rotary cutter to cut the PLA straw.

[0019] Furthermore, the support seat, the limiting support pressing plate and the support ring are an integrated structure, and the integrated support seat, the limiting support pressing plate and the support ring can effectively simplify the overall structure of the cutting support.

[0020] Further, the straw guide comprises a straw guide groove, a straw guide wheel, a guide roller shaft and a guide wheel drive motor;

[0021] The guide roller shaft is rotatably arranged on the straw guide groove, and the guide wheel driving motor is connected to the guide roller shaft;

[0022] The straw guide wheel is arranged in the middle of the guide roller shaft, and is used to guide the PLA straw. The guide roller shaft is driven to rotate by the guide wheel driving motor. Since the straw guide wheel is arranged on the guide roller shaft, the rotation of the straw guide wheel can drive the PLA straw to move forward.

[0023] Furthermore, a support guide tube is provided on the cutting box, and the support guide tube, the straw guide wheel and the support ring are all in a straight line. Through the setting of the support guide tube, the output of the PLA straw can be guided, and when the rotary cutter cuts the PLA straw, the PLA straw can also be supported and a force point can be provided, thereby facilitating the rotary cutter to cut the PLA straw.

[0024] Furthermore, a collecting hopper for collecting PLA straws is provided at the bottom of the rotary cutter. Through the setting of the collecting hopper, the cut PLA straws can be collected, which is simple and convenient.

[0025] Compared with the prior art, the beneficial effects of the technical solution of the utility model are:

[0026] The PLA straw cutting device disclosed by the utility model provides a cutting support on a cutting box body, and provides a rotary cutter between the cutting support and the straw guide device. Compared with the prior art, when the rotary cutter cuts the PLA straw, the cutting support can support the cutting of the rotary cutter, so that the PLA straw can be cut more accurately, avoiding deformation of the PLA straw or uneven cut due to lack of support during cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the first angle of the PLA straw cutting device in the utility model.

[0028] Figure 2 It is a structural schematic diagram of the second angle of the PLA straw cutting device in the utility model.

[0029] Figure 3It is a structural schematic diagram of the PLA straw cutting device in the utility model from the third angle.

[0030] Figure 4 It is a structural schematic diagram of a cutting box in the utility model.

[0031] Figure 5 It is an enlarged view of the structure in which the rotary cutter is arranged in the cutting box in the utility model.

[0032] Figure 6 It is a structural schematic diagram of the cutting support in the utility model.

[0033] Figure 7 It is a structural schematic diagram of the support guide tube in the utility model.

[0034] In the figure, 1 is a cutting box, 2 is a rotary cutter, 3 is a PLA straw, 4 is a straw guide device, 5 is a cutting support, 6 is a rotary driver, 7 is a white steel cutter, 8 is a carbon steel cutter seat, 9 is a tool tilt adjustment block, 10 is a positioning screw, 11 is a support seat, 12 is a support ring, 13 is a limit support pressing plate, 14 is a wear-resistant pad, 15 is a straw guide groove, 16 is a straw guide wheel, 17 is a guide roller shaft, 18 is a guide wheel drive motor, 19 is a support guide tube, and 20 is a collecting hopper. DETAILED DESCRIPTION

[0035] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" 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 a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, which can be said to be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The technical solution of the present invention is further explained below in conjunction with the accompanying drawings and embodiments.

[0037] like Figure 1-3As shown, a PLA straw cutting device comprises a cutting box 1, a rotary cutter 2 and a straw guiding device 4 for guiding a PLA straw 3; the rotary cutter 2 is arranged in the cutting box 1, and the straw guiding device 4 is arranged on the outside of the cutting box 1; a cutting support 5 is arranged on the cutting box 1, and the cutting support 5 and the straw guiding device 4 are on the same straight line. When the PLA straw 3 passes through the straw guiding device 4 and reaches the cutting support 5, the rotary cutter 2 cuts the PLA straw 3 between the cutting support 5 and the straw guiding device 4. By arranging the cutting support 5 on the cutting box 1 and arranging the rotary cutter 2 between the cutting support 5 and the straw guiding device 4, compared with the prior art, when the rotary cutter 2 cuts the PLA straw 3, the cutting support 5 can support the cutting of the rotary cutter 2, so that the PLA straw 3 can be cut more accurately, avoiding deformation of the PLA straw 3 due to lack of support during cutting, or uneven incision.

[0038] like Figure 4-5 As shown, the rotary cutter 2 includes a rotary driver 6, a white steel cutter 7, a carbon steel cutter seat 8 and a tool tilting adjustment block 9 arranged in sequence on the carbon steel cutter seat 8; the rotary driver 6 is connected to the carbon steel cutter seat 8; a positioning screw 10 for positioning the white steel cutter 7 is provided on the carbon steel cutter seat 8, and the inner side of the white steel cutter 7 is pressed against the tool tilting adjustment block 9. By arranging the tool tilting adjustment block 9 on the carbon steel cutter seat 8 and installing the white steel cutter 7 on the tool tilting adjustment block 9 of the carbon steel cutter seat 8 through the positioning screw 10, the white steel cutter 7 can be arranged on the tool tilting adjustment block 9 with different inclinations as needed to achieve the adjustment of the tool angle, which is simple and convenient. In the utility model, the inclination angle of the tool tilting adjustment block 9 is 0-45 degrees. In practical applications, the white steel cutter 7 can be arranged on the tool tilting adjustment block 9 with different inclination angles as needed to adjust the inclination angle of the white steel cutter 7.

[0039] In the utility model, there is at least one white steel cutter 7. In practical applications, the number of white steel cutters 7 can be set according to the rotation speed and cutting needs, which are all within the protection scope of the utility model. Among them, the thickness of the white steel cutter 7 is 0.5-1.5mm. Since the thickness of the white steel cutter 7 is set to 0.5-1.5mm, the thickness of the white steel cutter 7 is thinner than the existing white steel cutter 7. Under the high-speed rotation of the rotary cutter 2, the PLA straw 3 can be better cut.

[0040] like Figure 6-7As shown, the cutting support 5 includes a support seat 11, a support ring 12, a limit support pressing sheet 13 and a wear-resistant pad 14; the support ring 12 is arranged on the support seat 11, and the limit support pressing sheet 13 is arranged on the top of the support ring 12; the support ring 12 and the straw guide device 4 are in the same straight line; the wear-resistant pad 14 is arranged on the inner side of the support ring 12, and the PLA straw 3 passes through the support ring 12 after passing through the straw guide device 4. Through the arrangement of the support seat 11, the limit support pressing sheet 13 and the support ring 12, the PLA After the straw 3 passes through, when the rotary cutter 2 cuts the PLA straw 3, the support ring 12 and the limiting support pressing sheet 13 can support the cutting of the PLA straw 3 and provide a force point, which facilitates the rotary cutter 2 to cut the PLA straw 3. In the utility model, the support seat 11, the limiting support pressing sheet 13 and the support ring 12 are an integrated structure. The integrated support seat 11, the limiting support pressing sheet 13 and the support ring 12 can effectively simplify the overall structure of the cutting support 5.

[0041] In the present invention, the straw guide device 4 includes a straw guide groove 15, a straw guide wheel 16, a guide roller shaft 17 and a guide wheel driving motor 18; the guide roller shaft 17 is rotatably arranged on the straw guide groove 15, and the guide wheel driving motor 18 is connected to the guide roller shaft 17; the straw guide wheel 16 is arranged in the middle of the guide roller shaft 17, and is used to guide the PLA straw 3. The guide roller shaft 17 is driven to rotate by the guide wheel driving motor 18. Since the straw guide wheel 16 is arranged on the guide roller shaft 17, the rotation of the straw guide wheel 16 can drive the PLA straw 3 to move forward. In the present invention, A support guide tube 19 is provided on the cutting box 1. The support guide tube 19 is on the same straight line as the straw guide wheel 16 and the support ring 12. The support guide tube 19 can guide the output of the PLA straw 3. When the rotary cutter 2 cuts the PLA straw 3, the support guide tube 19 can also support and provide a force point for the PLA straw 3, which facilitates the rotary cutter 2 to cut the PLA straw 3. A collecting hopper 20 for collecting the PLA straw 3 is provided at the bottom of the rotary cutter 2. The cut PLA straw 3 can be collected simply and conveniently by setting the collecting hopper 20.

[0042] Example

[0043] In this embodiment, after the PLA straw is extruded from the extrusion die, it will be cooled in a cooling water tank under the guidance of the straw guide device to complete the shaping of the PLA straw. At this time, after being guided by the support guide tube, the PLA straw passes through the cutting box. When the PLA straw reaches the support ring, the rotary driver drives the carbon steel cutter seat to rotate. At this time, the white steel cutter on the carbon steel cutter seat cuts the PLA straw, and the cut PLA straw falls into the collection hopper for collection.

[0044] In practical applications, a plurality of tool inclination adjustment blocks with different inclination angles can be arranged on the carbon steel cutter seat as required.

[0045] When it is necessary to cut both ends of the PLA straw into flat ends, the white steel cutter can be vertically set on the carbon steel cutter seat. At this time, the white steel cutter is installed on the non-inclined tool tilt adjustment block. In this way, the two ends of the PLA straw can be cut into flat ends. In actual applications, multiple white steel cutters can be set on the carbon steel cutter seat at the same time to achieve fast cutting of PLA straws.

[0046] When one end of the PLA straw needs to be cut into a flat end and the other end into an oblique end, one of the white steel cutters only needs to be placed on a non-inclined tool tilt adjustment block, and the other white steel cutter is set on a tool tilt adjustment block symmetrical to the first white steel cutter. At this time, one end of the PLA straw can be cut into a flat end and the other end can be cut into an oblique end by cutting with the two white steel cutters.

[0047] In the figure, the description of the positional relationship is only for illustrative purposes and cannot be understood as a limitation of this patent; obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not limitations on the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. A PLA straw cutting device, comprising a cutting box, a rotary cutter and a straw guiding device for guiding the PLA straw, characterized in that: The rotary cutter is arranged in the cutting box, and the straw guide device is arranged outside the cutting box; The cutting box is provided with a cutting support, which is in the same straight line as the straw guide device. When the PLA straw passes through the straw guide device and reaches the cutting support, the rotary cutter cuts the PLA straw between the cutting support and the straw guide device.

2. The PLA straw cutting device according to claim 1, characterized in that: The rotary cutter comprises a rotary driver, a white steel cutter, a carbon steel cutter seat and a cutter tilt adjustment block arranged in sequence on the carbon steel cutter seat; The rotary driver is connected to the carbon steel cutter seat; The carbon steel cutter seat is provided with a positioning screw for positioning the white steel cutter, and the inner side of the white steel cutter is pressed against the tool tilt adjustment block.

3. The PLA straw cutting device according to claim 2, characterized in that: The inclination angle of the tool inclination adjustment block is 0-45 degrees.

4. The PLA straw cutting device according to claim 2, characterized in that: There is at least one white steel cutting knife.

5. The PLA straw cutting device according to claim 2, characterized in that: The thickness of the white steel cutter is 0.5-1.5 mm.

6. The PLA straw cutting device according to claim 1, characterized in that: The cutting support device comprises a support seat, a support ring, a limit support pressing sheet and a wear-resistant pad; The support ring is arranged on the support seat, and the position-limiting support pressing sheet is arranged on the top of the support ring; The support ring and the straw guide device are in the same straight line; The wear-resistant pad is arranged on the inner side of the support ring, and the PLA straw passes through the support ring after passing through the straw guide device.

7. The PLA straw cutting device according to claim 6, characterized in that: The support seat, the limiting support pressing sheet and the support ring are an integrated structure.

8. The PLA straw cutting device according to claim 6, characterized in that: The straw guide device comprises a straw guide groove, a straw guide wheel, a guide roller shaft and a guide wheel drive motor; The guide roller shaft is rotatably arranged on the straw guide groove, and the guide wheel driving motor is connected to the guide roller shaft; The straw guide wheel is arranged at the middle of the guide roller shaft and is used for guiding the PLA straw.

9. The PLA straw cutting device according to claim 8, characterized in that: A support guide tube is provided on the cutting box body, and the support guide tube, the straw guide wheel and the support ring are all in the same straight line.

10. The PLA straw cutting device according to claim 1, characterized in that: A collecting hopper for collecting PLA straws is provided at the bottom of the rotary cutter.

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