CN110450212B - Process method for bending and cutting oblique opening of paper straw - Google Patents
Process method for bending and cutting oblique opening of paper straw Download PDFInfo
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- CN110450212B CN110450212B CN201910751376.9A CN201910751376A CN110450212B CN 110450212 B CN110450212 B CN 110450212B CN 201910751376 A CN201910751376 A CN 201910751376A CN 110450212 B CN110450212 B CN 110450212B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/0006—Cutting members therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
- B26D3/08—Making a superficial cut in the surface of the work without removal of material, e.g. scoring, incising
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Abstract
The invention discloses a process method for bending and cutting an oblique opening of a paper straw, which comprises the following steps: step 1: conveying by a paper straw; step 2: the paper suction pipe is indented, the indentation method is that an indentation knife and a circular groove block fixedly connected with the indentation knife are matched with indentation by an indentation component; the number of the indentation assemblies is multiple, and every two indentation assemblies are in seamless connection and fixed; and step 3: cutting an oblique opening of the paper suction pipe, and obliquely cutting the tail end of the paper suction pipe through an obliquely arranged indentation knife to form an oblique cut; and 4, step 4: and (6) receiving materials. The invention has the following beneficial effects: the technical method for bending and cutting the oblique opening of the paper suction pipe can reduce the bending difficulty of the paper suction pipe, and the bent part is not easy to break.
Description
Technical Field
The invention relates to a paper straw process flow, in particular to a process method for bending and cutting an oblique opening of a paper straw.
Background
The straw is used as a common article for drinking beverages in cups in daily life, is generally made of plastics in industrial production, and is formed by injecting liquid obtained by melting the plastics into a mold, shaping and cooling. Nowadays, people pay more and more attention to the concept of health and environmental protection, and the paper straw is produced in order to solve the needs of people.
Chinese patent publication No. CN109463964A discloses a paper drinking straw, which comprises a first paper layer and an adhesive attached to the first paper layer, wherein the first paper layer is adhered to a second paper layer, and the first paper layer is spirally wound to form a tube. The paper straw has the characteristics of better water repellency, oil repellency and acid resistance.
Chinese patent publication No. CN109130328A discloses a bending machine for paper straws. The paper straw bending machine is provided with a rack, wherein a conveyor belt is arranged on the rack and used for conveying paper straws. A trough used for stacking the paper straws is arranged above the conveyor belt. The bottom of the trough is provided with a material supporting shaft. The material supporting shaft can control the paper suction pipes to fall on the conveying belt one by one to form a sequence difference. The bottom is provided with a plurality of indentation knives which are continuously arranged, and the cutting edges of the indentation knives are perpendicular to the stripping shaft.
The paper straw and the paper straw bending technology belong to the primary production technology. The quality of the produced oblique-mouth bent paper straw is poor, the difficulty of bending the paper straw by a user is high due to the indentation of the bent part, and the bent part is easy to break or damage.
Disclosure of Invention
The invention aims to provide a process method for bending and cutting oblique openings of a paper straw. The technical method for bending and cutting the oblique opening of the paper suction pipe can reduce the bending difficulty of the paper suction pipe, and the bent part is not easy to break.
The invention aims to be realized by the following technical scheme:
1. a process method for bending and cutting oblique openings of a paper straw comprises the following steps:
step 1: conveying by a paper straw;
step 2: the paper suction pipe is indented, the indentation method is that an indentation knife and a circular groove block fixedly connected with the indentation knife are matched with indentation by an indentation component; the number of the indentation assemblies is multiple, and every two indentation assemblies are in seamless connection and fixed;
and step 3: cutting an oblique opening of the paper suction pipe, and obliquely cutting the tail end of the paper suction pipe through an obliquely arranged indentation knife to form an oblique cut;
and 4, step 4: and (6) receiving materials.
The manufactured paper straws are conveyed by a conveying belt or a vibration table, and if the paper straws are conveyed by the vibration table, the conveying rails are matched with each other, so that the paper straws enter the conveying rails one by one to be conveyed.
The next step is paper suction pipe indentation, which mainly utilizes an indentation knife and a circular groove block fixedly connected with the indentation knife to match with the indentation knife, and changes the shape of an indentation part in the indentation process. The arrangement of the plurality of groups of indentation components ensures that the indentations are dense and the paper suction pipe is convenient to bend.
The oblique incision of the paper suction pipe in the step 3 belongs to direct oblique incision in the prior art, so that an oblique incision is formed at the tail end of the paper suction pipe. And finally, receiving the material.
In actual production work, the paper straw is found to have high strength, difficult indentation process and unobvious indentation effect when being manufactured. When the indentation force is higher than 300-400N, the paper straw is easy to deform integrally, so that the quality of the paper straw is poor; when the indentation force is lower than 100N, the indentation on the surface of the paper straw is not obvious, so that the paper straw is poor in bending difficulty and effect. In order to solve the problems, the paper straw is treated by the following process:
a step 2.1 is arranged between the step 2 and the step 3, wherein the step 2.1 is to preheat the paper suction pipe, the heating pipe is used for preheating the bending area of the paper suction pipe, the preheating temperature is 100-.
And a step 2.2 is arranged between the step 2 and the step 3, wherein the step 2.2 is to cool and harden the paper suction pipe, and the bent area of the paper suction pipe is cooled by using an air injection pipe, the cooling temperature is 20-25 ℃, and the cooling time is 3.2-3.6 s.
The paper suction pipe is preheated because the ignition point of the paper suction pipe is 130-250 ℃, and the fiber structure in the paper suction pipe is broken at a temperature higher than a certain temperature, so that the softening degree of the paper suction pipe is increased, and indentation is conveniently carried out. When the paper suction pipe and the heating pipe are in a relative moving state, the temperature of the heating pipe can reach 400 ℃ at most, and the preheating temperature is only the preheating temperature when the paper suction pipe and the heating pipe are in a relative static state.
The heating pipe is used for preheating the bending area of the paper suction pipe, and the preheating temperature is 100-120 ℃. When the preheating temperature is higher, the softening speed is high, the efficiency is improved, and when the preheating temperature is lower, the softening speed is low, the efficiency is lower, but the softening degree is lower, and the indentation effect is better.
The preheating temperature is 113 ℃, and tests show that the softening degree and the softening speed are proper when the preheating temperature is 113 ℃, so that the working efficiency and the indentation effect are not influenced.
The preheating time is 7.4s, and tests show that the physical property and the chemical property of the paper suction pipe cannot be influenced too much when the preheating time is 7.4 s. The preheating temperature is prolonged, so that the paper suction pipe is denatured, and the quality of the paper suction pipe is poor.
After preheating, the paper straw is usually cooled to room temperature, and after a short period of preheating, the temperature of the bent portion of the paper straw is typically 75-82 ℃. The technical problem in this case is to cool the paper straw.
The cooling of the paper straw is generally carried out by adopting a cooling method at normal temperature, the cooling at normal temperature has lower bending efficiency of the paper straw, the paper straw can be ensured to enter the next process without processing denaturation only by ensuring that the temperature of the paper straw is reduced to the room temperature, and the efficiency is lower. Meanwhile, in the process of gradually cooling the paper suction pipe, the fiber layer in the paper suction pipe still keeps the denatured structure after cooling, so that the paper suction pipe is low in hardness, easy to damage and low in service life.
In order to solve the problems, the bent area of the paper suction pipe is cooled by using an air injection pipe, and the cooling temperature is 20-25 ℃. The paper suction pipe is cooled in a short time by utilizing the rapid air flow, so that the fiber layer inside the paper suction pipe retracts at a lower temperature, further fracture of the fiber layer is reduced, the hardness of the paper suction pipe is ensured to a certain extent, and the paper suction pipe is prevented from being fractured and deformed in subsequent processing.
Through tests, when the cooling temperature is 23.6 ℃ and the cooling time is 3.3s, the cooling effect is optimal, and the efficiency is high. The reason is that the cooling temperature is 23.6 degrees, which is slightly lower than the room temperature of 25 ℃, so that the fibers have a tendency to retract, and the tendency is more obvious compared with the room temperature, thereby ensuring the hardness of the paper straw. Above 23.6 ℃, the retraction effect is slightly poor and the efficiency is reduced. At a temperature lower than 23.6 ℃, the retraction speed is high, so that the tendency of the fiber to retract is too large, and the fiber layer is easy to break. The fiber layer breakage directly affects the hardness of the fiber layer, and the fiber layer is easy to deform in subsequent processing.
Compared with the preheating method, another new process method is provided as follows, which is characterized in that:
and a step 2.1 is arranged between the step 2 and the step 3, wherein the step 2.1 is step drawing of the paper suction pipe, and after the paper suction pipe is indented by a group of indentation components, pulling force is applied to two ends of the paper suction pipe through a stepping motor.
The pulling force is 107.5N-184.2N, the force application time is 0.2-0.6s, the steps are repeated, and one indentation corresponds to one stepping stretching.
Compared with a preheating method, the method has the characteristics that the method is not required to be heated, and the good bending effect can be realized without controlling the temperature and the time. The two ends of the paper suction pipe are fixed, and meanwhile, pulling force is applied to the two ends of the paper suction pipe through the stepping motor. When the paper straw was by the indentation, the stress of paper straw depressed part is comparatively concentrated, and too big stress leads to the processing degree of difficulty increase of paper straw depressed part easily, and leads to paper straw inner structure to be destroyed easily, influences the intensity of paper straw. Therefore, in view of the above problems, a solution is achieved that effectively changes the stress concentration.
After the paper suction pipe is subjected to first indentation through the group of indentation assemblies, the stepping motor applies small pulling force to the two ends of the paper suction pipe, the step length of the stepping motor is small, and the force application time is short time which is shorter than 1 s. After the indentation is carried out for one time, the problem of stress concentration can appear in the depressed part, and at the moment, the stepping motor exerts pulling force for the internal fiber is stretched in the microcosmic, and the surface change is less. Meanwhile, the distance between the inner fiber molecules is increased, and the stress concentration is reduced. And then repeating the steps to prevent the stress from being excessively concentrated, thereby preventing the collapse and the damage of the internal structure of the paper straw and ensuring the strength of the paper straw. Meanwhile, the molecular distance of the bending part of the paper suction pipe can be kept appropriate, so that the bending difficulty of the paper suction pipe is reduced, and the using effect of the paper suction pipe is ensured.
Through tests, the effect is best when the pulling force is 107.5N-184.2N and the force application time is 0.2-0.6 s. In the tension range, the paper suction pipe cannot be directly broken due to overlarge tension, and meanwhile, the effect that internal stress cannot be dispersed due to the overlarge tension can be prevented. The application of force time is short for the inside fibrous layer of paper straw can not be cracked under the exogenic action, prevents to influence the intensity and the effect of paper straw.
The problem that the work efficiency is low when the stepping motor pulls is solved. The main reasons for this problem are: the indentation needs to be pulled by the stepping motor once every time, and only one paper straw can be processed every time, so that the production efficiency of the paper straw is greatly influenced, and the production of the paper straw is influenced. Therefore, in order to solve the above problems, the present invention provides the following technical solutions:
and a step 2.1 is arranged between the step 2 and the step 3, the step 2.1 is paper straw die indentation, a circular die set is arranged, the circular die set comprises a plurality of indentation components, the indentation components are arranged in the circular die set, and after the paper straws enter the circular die set, the circular die set is folded to directly form the indentations of the bent parts of the paper straws.
A plurality of indentation subassemblies that circular mould group included can carry out the indentation to the paper straw in the same time for a plurality of indentations are accomplished simultaneously, guarantee work efficiency. In general, a plurality of sets of stepping motors are used for solving the technical problem of insufficient working efficiency, and thus the production cost is high and the problem of low production efficiency is not substantially solved. Therefore, the invention can realize higher production efficiency of the bending indentation of the single paper straw by adopting the circular die set, and substantially realizes the improvement of the production efficiency of the paper straw. For the production mode, the possibility of misoperation is reduced due to the fact that the circular mold set is used for carrying out indentation in a folding mode, meanwhile, stress concentration can be effectively prevented by carrying out indentation, and a good indentation effect is achieved.
And replacing the step 3 with a step 3.1, wherein the step 3.1 is to cut the bevel opening of the circular mould set of the paper straw, and the bevel opening is directly cut in the indentation process by arranging a bevel cutter at the tail end of the circular mould set, and the bevel opening cutting and the indentation bending are carried out simultaneously.
The problem of follow-up indentation sword that needs increase to cut the bevel connection is solved. The inclined cutter is arranged in the circular die set, and the inclined cut is directly formed in the indentation process, so that the production efficiency is further improved, and the production efficiency of a single paper straw is higher.
Compared with the conventional indentation process of the bent part in the prior art, the production efficiency is slightly reduced, the quality of the bent part is improved, the bent part is not easy to break or damage, the quality of the paper straw is ensured, and the production efficiency cannot be greatly reduced.
In conclusion, the invention has the following beneficial effects:
1. the first innovation point of the invention is that in the prior art, the general indentation process directly utilizes an indentation knife to directly indentation on a paper suction pipe in a rolling state, the production efficiency is higher, but after actual use, the bending difficulty is higher, the quality of a bent part is poorer, and the bent part is easier to be damaged. In order to solve the technical problem, the invention discloses a production process of pre-heating indentation. The production process makes full use of the property of preheating and softening the fiber part in the paper straw before ignition, so that the paper straw reaches a more proper preheating temperature, the hardness of the paper straw is not greatly influenced, and the indentation difficulty can be reduced. Meanwhile, after preheating, the conventional production process generally waits for natural cooling, and the present invention uses a rapid cooling method for cooling the paper suction pipe using a gas slightly lower than the normal temperature. Too low temperature can cause the paper straw to retract too much, so that the bent part is damaged, and too high temperature can influence the cooling effect. Through sufficient tests, the invention provides the most optimized cooling temperature and cooling time, so that the cooling effect of the paper suction pipe is optimal, the physical and chemical properties of the paper suction pipe are not influenced, the production efficiency of the paper suction pipe is improved, and the new problem caused by preheating is solved.
2. The second innovation point of the invention is to solve the problem of stress concentration in the production process and prevent the increase of the processing difficulty of the paper straw and the subsequent strength problem of the paper straw caused by the stress concentration. Those skilled in the art, faced with the above problems, generally adopt a basic method of solving stress concentration: and a certain gap is ensured between the two indentations, so that the stress is not excessively concentrated, and the indentations are ensured to be separated from each other. The invention provides a more excellent solution corresponding to the solution in the prior art, and the paper suction pipe is pulled by the stepping motor, so that the paper suction pipe is correspondingly stretched once per indentation, thereby reducing stress concentration and ensuring that the physical property of the paper suction pipe is not greatly changed. After certain tests, the effect is best when the tension and the force application time are fixed. Within this range, the strength and effectiveness of the paper drinking straw is optimal and best.
3. The third innovation point of the invention is that in order to solve the problem of low efficiency caused in the production process of the paper straw, the technical personnel in the field provide a rolling indentation mode, the paper straw is transported forwards in a rolling movement mode by directly utilizing an indentation knife, so that the purpose of indentation is achieved in the transportation process, and the indentation pressed by the mode has poor quality, so that the paper straw is difficult to bend, and the paper straw is easy to damage. The invention provides a better method, and designs a circular die set, so that when a paper straw enters the circular die set, a mode of intensive indentation and bevel cutting can be achieved simultaneously, the circular die set can improve the production efficiency of the paper straw, and the indentation effect and the bevel cutting effect are better.
Description of the drawings:
FIG. 1 is a schematic structural view of an indentation assembly;
FIG. 2 is a schematic diagram of a plurality of indentation assemblies;
fig. 3 is a schematic structural view of a circular die set.
Reference numerals: 1. an indentation knife; 2. a circular groove block; 3. a groove; 4. and (4) an oblique cutter.
Detailed Description
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
A process method for bending and cutting oblique openings of a paper straw comprises the following steps:
step 1: conveying by a paper straw;
step 2: the paper suction pipe is indented, the indentation method is that an indentation knife and a circular groove block fixedly connected with the indentation knife are matched with indentation by an indentation component; the number of the indentation assemblies is multiple, and every two indentation assemblies are in seamless connection and fixed;
and step 3: cutting an oblique opening of the paper suction pipe, and obliquely cutting the tail end of the paper suction pipe through an obliquely arranged indentation knife to form an oblique cut;
and 4, step 4: and (6) receiving materials.
The above is the basic process. The basic process provided by the invention has the core that the indentation of the paper straw is carried out by using the indentation component, and the pressed indentations are dense, so that the bent part of the paper straw can be freely bent, the strength of the paper straw cannot be influenced, and the paper straw is not easy to break.
To demonstrate the performance of the paper straw, the following experiments were set up in particular:
table 1: paper straw experimental environment table
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Preheating temperature/. degree.C | 100 | 103.5 | 111.3 | 113 | 118.4 | - | 113 | - |
| Preheating time/s | 5 | 6.8 | 7.0 | 7.4 | 9.5 | - | 7.4 | - |
| Cooling temperature/. degree.C | 20 | 23.6 | 24.2 | 24.8 | 25.5 | 24.8 | - | - |
| Cooling time/s | 3.2 | 3.2 | 3.3 | 3.5 | 3.6 | 3.5 | - | - |
| Magnitude of tensile force/N | 107.5 | 120.3 | 140.6 | 150.8 | 180.6 | 140.6 | 140.6 | - |
| Time of application of force/s | 0.25 | 0.32 | 0.45 | 0.57 | 0.6 | 0.45 | 0.45 | - |
The paper straws were treated according to the above process conditions under laboratory conditions.
Example 1:
the experiment was carried out according to Table 1 with the data of example 1.
Example 2:
the experiment was performed according to table 1, corresponding to the data of example 2.
Example 3:
the experiment was performed according to table 1 with the data of example 3.
Example 4:
the experiment was performed according to the data of example 4 in table 1.
Example 5:
the experiment was carried out according to Table 1 with the data of example 5.
Comparative example 1:
the experiment was performed according to the data of comparative example 1 in table 1.
Comparative example 2:
the experiment was performed according to table 1 corresponding to the data of comparative example 2. The cooling method is to cool naturally to room temperature.
Comparative example 3:
the experiment was performed according to the data of comparative example 3 in table 1.
The preheating process requires the first four process conditions for the paper straw to be used for the experiment, and the subsequent two process conditions are not used for the moment.
1. Preheating process
Test example 1:
testing paper straw performance to obtain experimental data of paper straw
Table 2: paper suction tube performance test meter
| Compressive strength/Mpa | Bending tensile strength/Mpa | Flexural tensile modulus of elasticity/MPa | |
| Example 1 | 0.22 | 0.28 | 15 |
| Example 2 | 0.24 | 0.29 | 15 |
| Example 3 | 0.27 | 0.34 | 16 |
| Example 4 | 0.31 | 0.36 | 17 |
| Example 5 | 0.25 | 0.26 | 15 |
| Comparative example 1 | 0.30 | 0.38 | 18 |
| Comparative example 2 | 0.18 | 0.25 | 15 |
| Comparative example 3 | 0.30 | 0.38 | 18 |
Wherein, the compression strength is measured by GB/T50081-2020, and the stretch bending strength is measured by GB/T9341-2000.
After the above experiment, the following conclusions were made:
when the preheating temperature is at 100-113 ℃ and the preheating time is within 5-7.4s, and when compared with comparative example 1, it is found that the compressive strength and the stretch bending strength gradually increase, while the preheating temperature is greater than 113 ℃ and the preheating time is greater than 7.4s, the compressive strength and the stretch bending strength gradually decrease. In comparison with comparative example 2, the preheated paper straw has a larger reduction range of the compression resistance and the bending resistance. Therefore, it is concluded that:
tests show that when the preheating temperature is 113 ℃ and the preheating time is 7.4s, the softening degree and the softening speed are appropriate, and the working efficiency and the indentation effect are not influenced. When the cooling temperature is 23.6 ℃ and the cooling time is 3.3s, the cooling effect is optimal and the efficiency is high. The reason is that the cooling temperature is 23.6 degrees, which is slightly lower than the room temperature of 25 ℃, so that the fibers have a tendency to retract, and the tendency is more obvious compared with the room temperature, thereby ensuring the hardness of the paper straw. Above 23.6 ℃, the retraction effect is slightly poor and the efficiency is reduced. At a temperature lower than 23.6 ℃, the retraction speed is high, so that the tendency of the fiber to retract is too large, and the fiber layer is easy to break. The fiber layer breakage directly affects the hardness of the fiber layer, and the fiber layer is easy to deform in subsequent processing.
2. Stretching process
The stretching process requires the experiment under two process conditions after the paper straw is used, and the first four process conditions are not used for the time being.
Test example 2:
TABLE 3 paper suction tube performance test table
| Bending tensile strength/Mpa | Flexural tensile modulus of elasticity/MPa | |
| Example 1 | 0.19 | 13 |
| Example 2 | 0.27 | 13 |
| Example 3 | 0.30 | 14 |
| Example 4 | 0.36 | 16 |
| Example 5 | 0.27 | 14 |
| Comparative example 1 | 0.30 | 14 |
| Comparative example 2 | 0.29 | 14 |
| Comparative example 3 | 0.15 | 12 |
Through the above experiments, the following conclusions were reached:
when the tensile force is gradually increased within the range of 107.5-150.8N and the force application time is gradually increased within the range of 0.25-0.57s, the bending strength is gradually increased, and when the tensile force exceeds the value, the bending strength is gradually reduced. Therefore, the effect is best when the pulling force is 150.8N and the force application time is 0.57 s. Under the pulling force, the paper suction pipe cannot be directly broken due to overlarge pulling force, and meanwhile, the effect that the internal stress cannot be dispersed due to the overlarge pulling force can be prevented. The application of force time is short for the inside fibrous layer of paper straw can not be cracked under the exogenic action, prevents to influence the intensity and the effect of paper straw. Neither exceeding nor falling below this value leads to optimum results.
3. Circular die technology
Through experiments, the original groups of the examples 1 to 5 which are not subjected to the process flow are respectively used for indentation and bevel cutting in a circular die set. Comparative example 1-comparative example 3 without any treatment, the following data were obtained after the experiment:
table 4 paper straw performance test meter
| Compressive strength/Mpa | Bending tensile strength/Mpa | Flexural tensile modulus of elasticity/MPa | |
| Example 1 | 0.27 | 0.34 | 16 |
| Example 2 | 0.27 | 0.34 | 16 |
| Example 3 | 0.27 | 0.34 | 16 |
| Example 4 | 0.27 | 0.34 | 16 |
| Example 5 | 0.27 | 0.34 | 16 |
| Comparative example 1 | 0.30 | 0.38 | 18 |
| Comparative example 2 | 0.30 | 0.38 | 18 |
| Comparative example 3 | 0.30 | 0.38 | 18 |
After the above experiment, the following conclusions were made:
compared with the paper straw data with the best effect in the preheating and stretching processes, the paper straw processed by the circular die set has smaller difference, so that the quality of the paper straw obtained by the process is lower than the best quality, but the paper straw also meets the production and use conditions and has higher production efficiency. The following conclusions were reached:
the circular mould group enables the paper suction pipe to simultaneously achieve the dense indentation and the bevel cutting mode when entering the circular mould group, so that the circular mould group can improve the production efficiency of the paper suction pipe, and the indentation effect and the bevel cutting effect are good.
A plurality of indentation subassemblies that circular mould group included can carry out the indentation to the paper straw in the same time for a plurality of indentations are accomplished simultaneously, guarantee work efficiency. The production efficiency of the paper straw is improved substantially. For the production mode, the possibility of misoperation is reduced due to the fact that the circular mold set is used for carrying out indentation in a folding mode, meanwhile, stress concentration can be effectively prevented by carrying out indentation, and a good indentation effect is achieved.
The simple structure of the creasing assembly is shown in fig. 1, wherein a creasing blade 1 is fixedly connected with a circular groove block 2.
The connecting structure of the plurality of indentation assemblies is shown in fig. 2.
The structure of the circular mould group is shown in figure 3, a plurality of indentation components are arranged in the circular mould group, wherein when the paper suction pipe enters the groove 3, the indentation components perform indentation simultaneously, and the oblique cutter 4 performs oblique cutting.
Claims (2)
1. A process method for bending and cutting oblique openings of a paper straw comprises the following steps: step 1: conveying by a paper straw; the method is characterized in that:
step 2, preheating the paper suction pipe, namely preheating the bending area of the paper suction pipe by using a heating pipe, wherein the preheating temperature is 100-;
and step 3: cooling and hardening the paper suction pipe, and cooling the bending area of the paper suction pipe by using an air injection pipe, wherein the cooling temperature is 20-25 ℃, and the cooling time is 3.2-3.6 s;
and 4, step 4: the paper suction pipe is indented, the indentation method is that an indentation knife and a circular groove block fixedly connected with the indentation knife are matched with indentation by an indentation component; the number of the indentation assemblies is multiple, and every two indentation assemblies are in seamless connection and fixed;
and 5: cutting an oblique opening of the paper suction pipe, and obliquely cutting the tail end of the paper suction pipe through an obliquely arranged indentation knife to form an oblique cut;
step 6: and (6) receiving materials.
2. The process method for bending and cutting the oblique opening of the paper straw as claimed in claim 1, which is characterized in that: the preheating temperature is 113 ℃, the preheating time is 7.4s, the cooling temperature is 23.6 ℃, and the cooling time is 3.3 s.
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| CN112297514A (en) * | 2020-09-29 | 2021-02-02 | 中船重工鹏力（南京）塑造科技有限公司 | Large-scale production method of oblique-mouth U-shaped paper straw |
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| CN1057810A (en) * | 1990-07-04 | 1992-01-15 | 郑清祥 | The heat smelting crimp connection equipment of plasticity sheet shaped materials |
| US5476630A (en) * | 1991-05-06 | 1995-12-19 | Orsing; Ernst | Method for manufacturing dental aspirators |
| CN101683762A (en) * | 2009-08-20 | 2010-03-31 | 苏州达信科技电子有限公司 | Cutting and bending device and membrane cutting and bending method |
| CN202045865U (en) * | 2011-03-16 | 2011-11-23 | 吴忠市嘉信塑料制品制造有限公司 | Beverage sucker corrugation pressing equipment |
| CN206297135U (en) * | 2016-12-21 | 2017-07-04 | 温州风神硅胶制品有限公司 | A kind of corrugated pipe forming machine |
| CN108311568A (en) * | 2018-01-25 | 2018-07-24 | 刘春燕 | A kind of workpiece high efficiency bending technique |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205097517U (en) * | 2015-10-27 | 2016-03-23 | 泉州市满江红机械制造有限公司 | Cooling shaping device of full -automatic production machine is taken in packing |
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| CN1057810A (en) * | 1990-07-04 | 1992-01-15 | 郑清祥 | The heat smelting crimp connection equipment of plasticity sheet shaped materials |
| US5476630A (en) * | 1991-05-06 | 1995-12-19 | Orsing; Ernst | Method for manufacturing dental aspirators |
| CN101683762A (en) * | 2009-08-20 | 2010-03-31 | 苏州达信科技电子有限公司 | Cutting and bending device and membrane cutting and bending method |
| CN202045865U (en) * | 2011-03-16 | 2011-11-23 | 吴忠市嘉信塑料制品制造有限公司 | Beverage sucker corrugation pressing equipment |
| CN206297135U (en) * | 2016-12-21 | 2017-07-04 | 温州风神硅胶制品有限公司 | A kind of corrugated pipe forming machine |
| CN108311568A (en) * | 2018-01-25 | 2018-07-24 | 刘春燕 | A kind of workpiece high efficiency bending technique |
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