CN116214978A - Processing method of plant fiber composite material pipe body - Google Patents

Abstract

The invention relates to the technical field of composite materials, and discloses a pipe body processing method of a plant fiber composite material; comprises the following steps: 1) Processing the composite material to form a sheet; 2) Winding the sheet material on the periphery of a cylindrical die pipe to form an inner spiral cylinder; 3) Heating and fusing the inner winding intervals by using a heating die, and connecting adjacent inner winding sections into a whole to form a tube barrel; 4) Cutting the pipe barrel according to a set length to form a pipe body of the plant fiber composite material; the sheet material formed by processing is wound on the periphery of the cylindrical die pipe to form an inner spiral cylinder, and then the inner winding interval is fused by heating through a heating die, so that adjacent inner winding sections are connected into a whole to form a cylinder, and the cylinder is cut off according to a set length; the processing method is simple, the shape and the size of the formed pipe body are easy to control, and the problem that the pipe body of the plant fiber composite material cannot be formed into the pipe body by blowing and stretching after continuous processing of the pipe body of the plant fiber composite material is solved.

Description

Pipe body processing method of plant fiber composite material

technical field

The invention relates to the technical field of composite materials, in particular to a pipe body processing method of plant fiber composite materials.

Background technique

At present, there are many mixed plastics (degradable or non-degradable) with plant fiber additives on the market for pipe products, such as straws.

In the prior art, the process of continuous processing of the pipe body of the plant fiber composite material is blown and stretched, and the ductility of the plastic is used to complete the shape control and production.

However, once the proportion of plant fiber material is increased, it cannot be completed through this process, and it will also cause failure to extend and material breakage.

Contents of the invention

The object of the present invention is to provide a pipe body processing method of plant fiber composite material, aiming at solving the problem that in the prior art, the addition ratio of plant fiber material is increased, and the continuous processing of the pipe body of plant fiber composite material cannot be blown and stretched into a pipe body The problem.

The present invention is achieved in this way, the pipe body processing method of plant fiber composite material, comprises the following steps:

1), mixing the plant fiber material with fluid plastics to form a composite material, and processing the composite material to form a flaky sheet;

2), the sheet is wound around the outer circumference of the cylindrical mold tube to form a plurality of inner winding sections, and there is an inner winding interval between adjacent inner winding sections; The axial spiral of the inner spiral cylinder is formed;

3) Use the heating mold to heat and fuse the inner winding interval, and connect the adjacent inner winding sections into one to form a tube;

4) Cutting the tube according to a set length to form a tube body of the plant fiber composite material.

Further, in the step 1), the plant fiber material and the fluid plastic are stirred and fused by a mixing drum to form the composite material.

Further, in the step 3), the heating molds are arranged in an arc shape, and the adjacent heating molds are respectively located on both sides of the outer circumference of the cylindrical mold tube; The heating abutment surface of the heating abutment abuts on the inner winding section.

Further, the heating abutting surface is spaced apart from the cylindrical mold tube.

Further, the heated abutting surface abuts against the inner winding space, and heats and fuses the adjacent inner winding sections into one body to form the tube tube.

Further, in the step 2), the sheet is wound around the outer circumference of the cylindrical mold tube to form a plurality of outer winding sections, and there are outer winding intervals between adjacent outer winding sections; The outer winding section spirals along the direction of the inner winding interval to form an outer spiral cylinder, and the outer spiral cylinder abuts on the outer circumference of the inner spiral cylinder; the outer winding section abuts on the inner winding interval;

In the step 3), the heating mold heats and fuses the outer spiral tube by heating the abutment surface, so that a plurality of the outer winding sections and the inner winding intervals are connected as a whole to form the tube tube.

Further, the outer winding interval and the inner winding interval are arranged in a misaligned manner.

Further, the plant fiber material is a plant fiber material made from one or more of rice husks, straws, corn cobs and nut shells.

Further, there is a longitudinal stirring chamber in the mixing drum, and a longitudinally arranged stirring shaft is arranged in the stirring chamber, and the stirring shaft includes a clockwise rotating shaft and a counterclockwise rotating shaft. The bottom is located above the top of the counter-rotating shaft, and the top of the counter-rotating shaft abuts against the top of the stirring chamber; the bottom of the counter-rotating shaft presses against the bottom of the stirring chamber and is connected to a drive mechanism that drives the counter-rotating shaft to rotate;

The outer circumferences of the clockwise shaft and the reverse shaft are respectively provided with a plurality of blades, and the plurality of blades are respectively arranged along the circumferential direction and the axial direction of the clockwise shaft and the reverse shaft; The driving gear; the bottom of the reverse shaft is provided with a driven gear extending toward the driving gear, and the driven gear is meshed with the driving gear;

In the step 1), the plant fiber material and the fluid plastic are placed in the mixing chamber, the driving mechanism drives the clockwise rotation shaft to drive the driving gear to rotate clockwise, and the driving gear drives the reverse shaft to rotate counterclockwise through the driven gear. Clockwise rotation; the clockwise rotation axis and the counter rotation axis respectively bring the blades to stir the plant fiber material and the fluid plastic for a predetermined time through the opposite rotation directions to form the composite material.

Further, an abutment ring is provided between the forward rotation shaft and the reverse rotation shaft, and the abutment ring has an inner cavity that penetrates up and down, and an upper bearing is provided on the top of the inner cavity for the rotation of the reverse rotation shaft to abut against. The upper bearing is arranged in a ring shape; the bottom of the reverse shaft is inserted into the inner cavity and pressed against the upper bearing;

The bottom of the internal cavity is provided with a lower bearing for the rotation of the shaft, the lower bearing is arranged in a ring shape, and the lower bearing and the upper bearing are vertically opposite to each other; the driving gear and the driven gear are located in the internal cavity the middle part; the top of the clockwise rotating shaft is inserted into the inner cavity and abuts on the lower bearing.

Compared with the prior art _, in the pipe body processing method of plant fiber composite material provided by the present invention, the sheet formed by processing is wound on the outer periphery of the cylindrical mold pipe to form an inner spiral cylinder, and then the heating mold is used to heat and fuse the inner winding space, The adjacent inner winding sections are connected as a whole to form a tube, and the tube is cut according to the set length to form a tube body of plant fiber composite material; the processing method is simple and it is easier to control the shape and size of the tube body. In addition to the increase in the proportion of plant fiber materials, the continuous processing of the plant fiber composite material pipe body cannot be blown and stretched into a pipe body.

Description of drawings

Fig. 1 is the three-dimensional schematic diagram one of the pipe body processing method of the plant fiber composite material provided by the present invention;

Fig. 2 is the perspective view II of the pipe body processing method of the plant fiber composite material provided by the present invention;

Fig. 3 is the structural representation of mixing drum provided by the present invention;

Fig. 4 is a schematic diagram of the enlarged structure of A in Fig. 3 of the present invention.

In the figure: sheet material 100, cylindrical mold tube 200, heating mold 300, mixing drum 400, inner winding section 101, inner winding interval 102, inner circling cylinder 103, outer winding section 104, outer winding interval 105, outer circling cylinder 106, Stirring chamber 401 , stirring shaft 402 , forward rotating shaft 403 , counter rotating shaft 404 , blade 405 , driving gear 406 , driven gear 407 , abutting ring 408 , upper bearing 409 , lower bearing 410 .

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

The implementation of the present invention will be described in detail below in conjunction with specific embodiments.

In the drawings of this embodiment, the same or similar symbols correspond to the same or similar components; The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. Construction and operation, so the words describing the positional relationship in the drawings are only for illustrative purposes, and should not be construed as limitations on the present invention. For those skilled in the art, the specific meanings of the above terms can be understood according to specific situations.

Referring to Figures 1-4, it is a preferred embodiment of the present invention.

A method for processing a pipe body of a plant fiber composite material, comprising the following steps:

1), mixing the plant fiber material and fluid plastic to form a composite material, and processing the composite material to form a sheet 100;

2), the sheet 100 is wound around the outer circumference of the cylindrical mold tube 200 to form a plurality of inner winding sections 101, and there is an inner winding interval 102 between adjacent inner winding sections 101; a plurality of inner winding sections 101 along Rotate along the axial direction of the cylindrical mold tube 200 to form an inner spiral cylinder 103;

3) Using the heating mold 300 to heat and fuse the inner winding space 102, and connect the adjacent inner winding sections 101 into one body to form a tube;

4) Cutting the tube tube according to the set length to form a tube body of the plant fiber composite material.

In the pipe body processing method of the plant fiber composite material provided above, the sheet 100 formed by processing is wound on the outer periphery of the cylindrical mold tube 200 to form the inner spiral tube 103, and then the heating mold 300 is used to heat and fuse the inner winding space 102, so that adjacent The inner winding section 101 is connected as a whole to form a tube, and the tube is cut according to the set length to form a tube body of plant fiber composite material; this processing method is simple and it is relatively easy to control the shape and size of the tube body, which solves the problem of plant The proportion of added fiber material increases, and the continuous processing of the pipe body of plant fiber composite material cannot be blown and stretched into a pipe body.

In step 1), the plant fiber material and the fluid plastic are stirred and fused through the mixing drum 400 to form a composite material. In this way, the mixing of the plant fiber material and the fluid plastic will be more uniform, making the structure of the composite material more stable when it is molded.

In this embodiment, in step 3), the heating mold 300 is arranged in an arc shape, and the adjacent heating molds 300 are respectively located on both sides of the outer circumference of the cylindrical mold tube 200; The abutment surface is heated, and the abutment surface is abutted against the inner winding section 101 .

Utilizing the arc-shaped arrangement of the heating mold 300, the heating mold 300 is heated on the adjacent inner winding section 101 through the heating abutment surface in an arc shape, so that the adjacent inner winding section 101 is more easily formed into one body; the cylindrical mold tube The heating molds 300 arranged on both sides of the 200 can contact and heat multiple times when the multiple inner winding sections 101 pass by, so as to avoid insufficient uniformity or omission of heating, resulting in unqualified tube molding.

The heating abutting surface and the cylindrical mold tube 200 are spaced apart. In this way, the purpose is to allow the plurality of inner winding segments 101 on the cylindrical mold tube 200 to contact the heating abutment surface through the spaced arrangement, so that the heating abutment surface can be contacted and heated more comprehensively.

The heated abutment surface is abutted against the inner winding space 102, and the adjacent inner winding sections 101 are heated and fused together to form a tube. In this way, the heating and abutting surface is used to fuse the inner winding space 102 under heat and pressure, so that the adjacent inner winding sections 101 are heated and fused together to form a tube; avoiding the incomplete formed tube.

In this embodiment, in step 2), the sheet 100 is wound around the outer periphery of the cylindrical mold tube 200 in a cylindrical shape to form a plurality of outer winding sections 104, and there are outer winding intervals 105 between adjacent outer winding sections 104; A plurality of outer winding sections 104 spiral along the direction of the inner winding interval 102 to form an outer spiral cylinder 106, and the outer spiral cylinder 106 abuts on the outer circumference of the inner spiral cylinder 103; the outer winding section 104 abuts on the inner winding interval 102;

In step 3), the heating mold 300 heats and fuses the outer spiral tube 106 by heating the abutment surface, so that the plurality of outer winding sections 104 are connected with the inner winding space 102 as a whole to form a tube.

After the heating mold 300 heats and molds the inner spiral cylinder 103, the inner winding space 102 is covered by the outer winding section 104 for secondary heating and molding, and the entire outer spiral cylinder 106 is fused and filled on the inner winding space 102, so that the outer winding Section 104 is integrally connected with inner winding space 102 to form a tube.

It is also possible to wrap the inner spiral cylinder 103 around the outer circumference of the cylindrical mold tube 200, and then spiral the outer winding section 104 along the direction of the inner winding space 102 to form the outer spiral cylinder 106; The spiral cylinder 106 and the inner spiral cylinder 103 are heated and pressure-connected multiple times to form a tube.

The outer winding space 105 and the inner winding space 102 are arranged in a misaligned manner. In this way, the outer winding space 105 and the inner winding space 102 will not communicate, and the heating and filling of the outer winding section 104 into the inner winding space 102 can also be improved, so that the outer winding section 104 and the inner winding space 102 are connected as one to form a tube.

The plant fiber material is a plant fiber material made from one or more of rice husks, straws, corn cobs and nut shells. In this way, the plant fiber material can be used to reduce the plastic cost and achieve the purpose of environmental protection.

In this embodiment, the mixing drum 400 has a longitudinal stirring chamber 401, and the stirring chamber 401 is provided with a longitudinally arranged stirring shaft 402. The stirring shaft 402 includes a clockwise rotating shaft 403 and a counterclockwise rotating shaft 404. The bottom of the shaft 404 is located above the top of the clockwise shaft 403, and the top of the counterclockwise shaft 404 abuts against the top of the stirring chamber 401; the bottom of the clockwise shaft 403 is pressed against the bottom of the stirring chamber 401 and is connected with the driving mechanism that drives the clockwise shaft 403 to rotate ;

A plurality of blades 405 are respectively provided on the outer circumference of the forward rotation shaft 403 and the reverse rotation shaft 404, and the plurality of blades 405 are respectively arranged along the circumferential direction and the axial direction of the forward rotation shaft 403 and the reverse rotation shaft 404; the top of the forward rotation shaft 403 is provided with a The driving gear 406 protruding from 404; the bottom of the reverse shaft 404 is provided with a driven gear 407 extending toward the driving gear 406, and the driven gear 407 is meshed with the driving gear 406;

In step 1), the plant fiber material and fluid plastic are placed in the mixing chamber 401, the driving mechanism drives the clockwise rotation shaft 403 to drive the driving gear 406 to rotate clockwise, and the driving gear 406 drives the reverse shaft 404 to rotate counterclockwise through the driven gear 407 The forward rotation shaft 403 and the counter rotation shaft 404 respectively take the blades 405 to stir the plant fiber material and the fluid plastic for a predetermined period of time through the opposite rotation directions to form a composite material.

The driving mechanism drives the clockwise rotation shaft 403 to drive the driving gear 406 to rotate clockwise, and the driving gear 406 drives the reverse rotation shaft 404 to rotate counterclockwise through the driven gear 407; while the clock rotation shaft 403 and the counter rotation shaft 404 rotate simultaneously and in opposite directions, which can be more efficient and Evenly mixing and stirring the plant fiber material and the fluid plastic improves the mixed molding structure of the plant fiber material and the fluid plastic.

In this embodiment, an abutment ring 408 is provided between the forward rotation shaft 403 and the reverse rotation shaft 404. The abutment ring 408 has an internal cavity that penetrates up and down. The upper bearing 409 is arranged in a ring shape; the bottom of the reverse shaft 404 is inserted into the inner cavity and pressed against the upper bearing 409;

The bottom of the internal cavity is provided with a lower bearing 410 for the rotation of the clockwise shaft 403 to abut against. The lower bearing 410 is arranged in a ring shape, and the lower bearing 410 and the upper bearing 409 are vertically opposite to each other; the driving gear 406 and the driven gear 407 are located in the inner cavity. The middle part; the top of the clockwise rotating shaft 403 is inserted into the inner cavity and abuts against the lower bearing 410 .

The forward rotation shaft 403 and the reverse rotation shaft 404 are butt-mounted by the abutment ring 408, so that the forward rotation shaft 403 and the reverse rotation shaft 404 are more stable during transmission, and the abutment ring 408 uses the balls in the upper bearing 409 to reduce the bottom rotation of the reverse rotation shaft 404 Frictional resistance, the balls in the upper bearing 409 also provide part of the support point for the reverse shaft 404; and the abutment ring 408 reduces the frictional resistance for the top rotation of the forward shaft 403 through the balls in the lower bearing 410;

The driving gear 406 and the driven gear 407 can be protected by the abutment ring 408 to prevent plant fiber material or fluid plastic from penetrating into the driving gear 406 and the driven gear 407 .

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (10)

1. The pipe body processing method of the plant fiber composite material is characterized by comprising the following steps of:

1) Mixing plant fiber material with fluid plastic to form composite material, and processing the composite material to form sheet;

2) Winding the sheet material on the periphery of a cylindrical mould pipe in a cylindrical shape to form a plurality of inner winding sections, wherein inner winding intervals are arranged between adjacent inner winding sections; the inner winding sections spiral along the axial direction of the cylindrical die pipe to form an inner spiral cylinder;

3) Heating and fusing the inner winding intervals by using a heating die, and connecting adjacent inner winding sections into a whole to form a tube barrel;

4) Cutting the pipe barrel according to a set length to form a pipe body of the plant fiber composite material.

2. The method for manufacturing a tube body of a plant fiber composite material according to claim 1, wherein in the step 1), the plant fiber material and the fluid plastic are mixed and fused by a mixing drum to form the composite material.

3. The method for processing a tube body of a plant fiber composite material according to claim 1, wherein in the step 3), the heating dies are arranged in an arc shape, and adjacent heating dies are respectively positioned at two sides of the outer periphery of the cylindrical die tube; the heating die has a heating abutment surface facing the cylindrical die tube and arranged in an arc shape, the heating abutment surface abutting on the inner winding section.

4. A method of processing a tube of plant fiber composite material according to claim 3, wherein the heated abutment surface is spaced from the cylindrical die tube.

5. A method of manufacturing a tube of plant fiber composite material according to claim 3, wherein the heating abutment surface abuts against the inner winding space and the adjacent inner winding sections are heat fused together to form the tube.

6. A method of manufacturing a tube body of a plant fiber composite material according to claim 3, wherein in the step 2), the sheet is wound around the outer periphery of a cylindrical mold tube having a cylindrical shape to form a plurality of outer winding sections with outer winding intervals between adjacent outer winding sections; the outer winding sections spiral along the direction of the inner winding interval to form an outer spiral cylinder, and the outer spiral cylinder is abutted against the periphery of the inner spiral cylinder; the outer winding section is abutted on the inner winding interval;

in the step 3), the heating die heats and fuses the outer spiral tube through the heating abutting surface, so that a plurality of outer winding sections and inner winding intervals are connected into a whole to form the tube.

7. The method for manufacturing a tube of a plant fiber composite material according to claim 6, wherein the outer winding interval and the inner winding interval are arranged in a staggered manner.

8. The method of processing a tube of a plant fiber composite material according to any one of claims 1 to 7, wherein the plant fiber material is one or more of rice hulls, straw, corn cobs, and nut shells.

9. The method for processing the pipe body of the plant fiber composite material according to claim 2, wherein the stirring cylinder is provided with a longitudinal stirring cavity, a stirring shaft which is longitudinally arranged is arranged in the stirring cavity, the stirring shaft comprises a clockwise rotating shaft which rotates clockwise and a counter rotating shaft which rotates anticlockwise, the bottom of the counter rotating shaft is positioned above the top of the clockwise rotating shaft, and the top of the counter rotating shaft is abutted against the top of the stirring cavity; the bottom of the forward rotating shaft is propped against the bottom of the stirring cavity and is connected with a driving mechanism for driving the forward rotating shaft to rotate;

the outer circumferences of the forward rotating shaft and the reverse rotating shaft are respectively provided with a plurality of blades, and the blades are respectively arranged in a staggered manner along the circumferential directions and the axial directions of the forward rotating shaft and the reverse rotating shaft; the top of the clockwise rotation shaft is provided with a driving gear protruding towards the anticlockwise rotation shaft; the bottom of the reversing shaft is provided with a driven gear which extends towards the driving gear, and the driven gear is meshed with the driving gear;

in the step 1), the plant fiber material and the fluid plastic are placed in a stirring cavity, the driving mechanism drives the clockwise rotation shaft to drive the driving gear to rotate clockwise, and the driving gear drives the counter rotation shaft to rotate anticlockwise through the driven gear; and the plant fiber material and the fluid plastic are stirred for a preset time by the blades respectively carried by the rotating shaft and the reversing shaft in opposite rotating directions, so that the composite material is formed.

10. The method for processing a pipe body of a plant fiber composite material according to claim 9, wherein an abutting ring is arranged between the forward rotating shaft and the reverse rotating shaft, the abutting ring is provided with an inner cavity penetrating up and down, an upper bearing for the rotation and abutting of the reverse rotating shaft is arranged at the top of the inner cavity, and the upper bearing is in a ring shape; the bottom of the reversing shaft is inserted into the inner cavity to be pressed against the upper bearing;

the bottom of the inner cavity is provided with a lower bearing for the rotating and abutting of the clockwise rotation shaft, the lower bearing is arranged in an annular shape, and the lower bearing and the upper bearing are longitudinally and oppositely arranged; the driving gear and the driven gear are positioned in the middle of the inner cavity; the top of the forward rotation shaft is inserted into the inner cavity and is abutted on the lower bearing.

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