Compression roller for preparing breathable film and casting machine

Abstract

The invention relates to a compression roller for preparing a breathable film and a casting machine, the compression roller comprises a working roller and an auxiliary roller which are oppositely arranged at a fixed point, and a circulating belt matched with the working roller and the auxiliary roller, the first surface of the circulating belt is in contact with a material and is in contact with the surface of the auxiliary roller to pass through; and the auxiliary roller surface part is provided with a scraping end acting on the circulating belt, and the scraping end keeps moving relative to the circulating belt. According to the whole set of equipment provided by the invention, through the cooperation of the working rollers and the circulating belt, attachments can reach the circulating belt in the process of rolling materials, the face of the circulating belt is automatically cleaned through the cooperation of the auxiliary rollers, and compared with a working mode of equipment in the prior art, the working efficiency is greatly improved. And the labor complexity of continuously managing the equipment when the equipment works can be effectively relieved, and meanwhile, the cooling effect on the forming material can be further promoted.

Description

Technical Field

[0001] The invention relates to a material processing device, in particular to a pressure roller and a casting machine for preparing a breathable film. Background Art

[0002] Breathable film materials are usually widely used in some special fields. For example, for personal hygiene products, such as sanitary napkins, diapers and panty liners, the surface layer is usually made of film materials and knitted fabrics, woven fabrics, non-woven fabrics, etc., which are bonded and laminated to give the fabrics special properties. Especially for the field of personal care products, this material combination can ensure safety and non-toxicity to the human body and easy processing.

[0003] As mentioned above, the current processing technology for breathable membranes involves processes such as calendering and stretching of a cast-film machine. The pressure roller of the cast-film machine is in contact with the material at all times during operation. According to the properties of the breathable membrane material, during the gradual cooling process, the material that is not fully melted contacts the pressure roller due to friction, and may form adhesion due to shear force, which may cause material residue on the surface of the pressure roller. When the accumulation is too much, it will affect the flatness of the pressure roller surface, thereby affecting the normal contact with the material, and thus affecting the rolling of the material. At present, this phenomenon is usually cleaned by manually holding a scraping tool (scraper), but this method is inefficient and labor-intensive. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In order to solve the problems reflected in the above background technology, the present invention provides the following technical solutions:

[0006] A pressure roller for preparing a breathable film comprises a working roller and an auxiliary roller arranged at relatively fixed points, and a circulating belt matched therewith, and:

[0007] The first surface of the circulating belt contacts the material and contacts the surface of the auxiliary roller;

[0008] The auxiliary roller surface is provided with a scraping end acting on the circulating belt, and the auxiliary roller surface keeps relative movement with the circulating belt.

[0009] As a preferred technical solution for preparing a pressure roller for a breathable film, it also includes a first positioning roller and a second positioning roller, and the circulating belt passes through the first circulating roller, the auxiliary roller and the second positioning roller in sequence.

[0010] As an optimal technical solution for preparing a pressure roller for breathable membranes, the auxiliary roller is elastically provided with a pressure portion flush with the auxiliary surface portion, and the auxiliary roller is configured to rotate relative to its location, and the pressure portion keeps the auxiliary roller fixed during the force application process.

[0011] As a preferred technical solution for preparing a pressure roller for a breathable film, the scraping ends are distributed in an array around the auxiliary roller surface, and the pressure receiving parts are evenly distributed in the scraping end intervals.

[0012] As an optimal technical solution for a pressure roller for preparing a breathable membrane, it also includes a base, which is fixedly arranged relative to the position of the working roller, the auxiliary roller is rotatably arranged on the base, the pressure-bearing part is slidably arranged on the auxiliary roller toward the axis of the auxiliary roller, and the base is provided with limiting grooves distributed in an array around the axis of the auxiliary roller, and the limiting grooves are plugged into and matched with the pressure-bearing part.

[0013] As a preferred technical solution for preparing a pressure roller for a breathable film, a guide plate is constructed on the auxiliary roller, the pressure receiving portion is slidably matched with the guide plate, and an elastic block is abutted against the guide plate.

[0014] As a preferred technical solution for preparing a pressure roller for a breathable membrane, the auxiliary roller is provided with an inner cavity, and the scraping end slit is connected to the inner cavity.

[0015] As a preferred technical solution for preparing a pressure roller for a breathable membrane, a suction port is arranged on the base, which is communicated with the inner cavity.

[0016] A casting machine for preparing a breathable film, comprising the pressing roller described in the above scheme, and:

[0017] A first flow path, wherein the cooling medium passes through the cooling roller and the first flow path in sequence;

[0018] The second flow path is in thermal contact with the first flow path and is communicated with the suction port.

[0019] As a preferred technical solution for a casting machine for preparing a breathable membrane, the first flow path surrounds the second flow path and shares a common wall with the second flow path.

[0020] The pressure roller and casting machine for preparing the breathable film provided by the present invention have the following beneficial effects:

[0021] 1 The pressure roller provided by the present invention cooperates with the circulating belt through the working roller, so that during the process of rolling the material, the attached materials can reach the circulating belt, and the surface of the circulating belt can be automatically cleaned through the cooperation of the auxiliary roller. Compared with the working mode of the equipment in the prior art, it can effectively reduce the tedious labor of personnel to constantly take care of the equipment when the equipment is working.

[0022] 2 The present invention provides a casting machine equipped with the pressure roller of the present invention, so that the pressure rollers cooperate with each other during operation, thereby utilizing the working process of the pressure rollers to assist in heat dissipation of the cooling liquid, thereby improving the cooling and molding efficiency of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0024] Figure 1 It is a three-dimensional diagram of the first embodiment of the present invention.

[0025] Figure 2 For about Figure 1 Another perspective view of .

[0026] Figure 3 for Figure 1 Schematic diagram of the position distribution of multiple roller structures.

[0027] Figure 4 for Figure 1 Schematic diagram of the split between the middle parts of the structure.

[0028] Figure 5 for Figure 1 Schematic diagram of the three-dimensional cross-section of the middle part structure.

[0029] Figure 6 for Figure 1 Schematic diagram of the coordination between the auxiliary roller and the circulating belt shown in FIG.

[0030] Figure 7 for Figure 6 Enlarged schematic diagram at point A in the middle.

[0031] Figure 8 for Figure 1 A three-dimensional cutaway diagram of the structure shown in the middle part.

[0032] Fig. 9 It is a partial structural perspective view of the second embodiment of the present invention.

[0033] Fig.10 for Fig. 9 Schematic diagram of three-dimensional cutout.

[0034] Reference numerals:

[0035] 1. Base; 101. Frame; 102. Connecting shaft; 2. Auxiliary roller; 3. Working roller; 4. First positioning roller; 5. Second positioning roller; 6. Take-up roller; 7. Circulating belt; 8. Inner cavity; 9. Scraping end; 10. Grille hole; 11. Guide plate; 12. Pressure-bearing part; 13. Elastic block; 14. Limiting groove; 15. Suction port; 16. Air guide cover; 17. Second flow path; 18. Exhaust fan; 19. First flow path. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0039] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0040] Reference Figure 1-8 , which is the first embodiment of the present invention, provides a pressure roller for preparing a breathable film, which at least includes a base 1 (frame), and an auxiliary roller 2, a working roller 3, a first positioning roller 4 and a second positioning roller 5 rotatably arranged on the base 1, and also includes a circulating belt 7 matched with multiple roller bodies, and the positional relationship between the whole is as follows Figure 3 As shown, the first surface (outer surface) of the circulating belt 7 contacts the auxiliary roller 2, and the second surface (inner surface) contacts the first positioning roller 4, the second positioning roller 5 and the working roller 3. The base 1 is also provided with a tightening roller 6, which forms a resistance to the circulating belt 7, so as to tighten the circulating belt 7 to keep it as shown in FIG. Figure 3 The status shown;

[0041] Regarding the structure of the auxiliary roller 2, Figure 5-8As shown, the interior of the auxiliary roller 2 is a hollow structure, and the interior is defined as an inner cavity 8. Specifically, as shown in FIG. Figure 4 As shown, the base 1 includes two symmetrically arranged frames 101 and a connecting shaft 102 fixedly connected between the two frames 101. The connecting shaft 102 passes through the inner cavity 8 to keep the auxiliary roller 2 and the connecting shaft 102 rotating together. The face of the auxiliary roller 2 is constructed with an array of scraping ends 9 (blade structures), and grid holes 10 are formed between adjacent scraping ends 9. The grid holes 10 are connected to the inner cavity 8. A guide plate 11 is constructed in the grid holes 10. A pressure-bearing portion 12 is movably sleeved on the guide plate 11. The pressure-bearing portion 12 can slide on the guide plate 11 along the radial direction of the auxiliary roller 2. An elastic block 13 (sponge block or silicone block) is also abutted between the inner side of the pressure-bearing portion 12 and the guide plate 11. Regarding the shape of the pressure-bearing portion 12, as shown in FIG. Figure 7 As shown, the side facing the outside of the auxiliary roller 2 is flush with the outer peripheral surface of the auxiliary roller 2, and the limiting grooves 14 are arranged in an array on the connecting shaft 102, which are used to accommodate the other side of the pressure-bearing part 12;

[0042] like Figure 3 As shown, in the process of realizing the calendering of the breathable film, the power of the casting machine is input to the working roller 3, so that the material is calendered by the circulating belt 7 located at the bottom of the working roller 3. The movement direction of the circulating belt 7 is as shown in FIG. Figure 3 As shown by the middle arrow; under normal circumstances, through the movement of the circulating belt 7, the auxiliary roller 2 will form a synchronous rotation on the connecting shaft 102; when there is material adhering to the first surface of the circulating belt 7, when it moves with the circulating belt 7 to the auxiliary roller 2, the adhesion of the material makes the first surface of the circulating belt 7 uneven, thereby forming a convexity, and the convexity (sticky material) will squeeze the pressure-bearing part 12, so that the pressure-bearing part 12 breaks free from the elastic resistance of the elastic block 13, and moves toward the axis of the auxiliary roller 2, so that one side of the pressure-bearing part 12 will be stuck in the limiting groove 14, thereby limiting the rotation of the auxiliary roller 2, that is, the circulating belt 7 is While continuing to move, the scraping end 9 remains stationary, so that the two are relatively movable, so that the first surface of the circulating belt 7 is scraped by the scraping end 9 to scrape off the convex parts (sticky materials) on the circulating belt 7, until the sticky materials on the surface of the circulating belt 7 are fully scraped off, so that no convexity is formed on the surface of the circulating belt 7 (it will not affect the normal rolling process of the material). At this time, the pressure-bearing part 12 is not squeezed by the surface of the circulating belt 7, and it leaves the limiting groove 14 under the elastic force of the elastic block 13, so that the auxiliary roller 2 can rotate normally, thereby not causing resistance to the movement of the circulating belt 7;

[0043] As mentioned above, the advantage of the present invention is that, in addition to being able to automatically clean the materials adhered to the equipment, it can automatically work when adhesion occurs, and stop the scraping work when the adhered materials are cleaned off, thereby not affecting the normal operation of the equipment and reducing the energy consumption of the equipment operation.

[0044] Further, see Figure 2-4 as well as Figure 8 A suction port 15 is constructed at one end of the connecting shaft 102. The suction port 15 is connected to the inner cavity 8 at the peripheral side of the connecting shaft 102. The suction port 15 is used to connect a suction device (exhaust fan 18, dust collection equipment, etc.), so that the adhesion scraped off the circulating belt 7 falls into the inner cavity 8 and is sucked through the suction port 15 to achieve the effect of removing debris.

[0045] Reference Fig. 9 and Fig.10 Based on the first embodiment, the second embodiment of the present invention will be introduced. Specifically, this embodiment provides a casting machine for preparing a breathable membrane. Compared with the prior art, the casting machine is equipped with the pressure roller described in the first embodiment and also includes a guide cover 16. Specifically:

[0046] The shape of the air guide cover 16 is as follows: Fig. 9 As shown, it is funnel-shaped, and its inner axial area is defined as a second flow path 17, the second flow path 17 is used to communicate with the suction port 15, and a suction fan 18 is installed in the second flow path 17;

[0047] A hollow area is also constructed in the wall thickness of the flow guide cover 16, which is defined as a first flow path 19. The first flow path 19 is used to communicate with a circulating coolant pipeline passing through a cooling roller on the casting machine;

[0048] During operation of the casting machine of the present invention, when the exhaust fan 18 is working, an air suction effect is formed in the second flow path 17 to suction the inner cavity 8 and complete the cleaning of debris. At the same time, when the coolant passes through the first flow path 19, the airflow in the second flow path 17 can dissipate heat to the wall shell of the guide cover 16, thereby indirectly assisting the heat dissipation of the coolant in the first flow path 19 through heat transfer.

[0049] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A pressure roller for preparing a breathable film, characterized in that: It includes working rolls and auxiliary rolls set at relatively fixed points, and circulating belts matched therewith, and: The first surface of the circulating belt contacts the material and contacts the surface of the auxiliary roller; The auxiliary roller surface is provided with a scraping end acting on the circulating belt, and the auxiliary roller surface keeps relative movement with the circulating belt.

2. The pressure roller for preparing a breathable film according to claim 1, characterized in that: It also includes a first positioning roller and a second positioning roller, and the circulating belt passes through the first circulating roller, the auxiliary roller and the second positioning roller in sequence.

3. The pressure roller for preparing a breathable film according to claim 1, characterized in that: The auxiliary roller is elastically provided with a pressure receiving portion flush with the auxiliary surface portion. The auxiliary roller is configured to be rotatable relative to the position where it is located, and the pressure receiving portion keeps the auxiliary roller fixed during the process of receiving force.

4. The pressure roller for preparing a breathable film according to claim 3, characterized in that: The scraping ends are distributed in an array around the auxiliary roller surface, and the pressed portions are evenly distributed within the scraping end intervals.

5. The pressure roller for preparing a breathable film according to claim 3, characterized in that: It also includes a base, which is fixedly arranged relative to the position of the working roller, the auxiliary roller is rotatably arranged on the base, the pressure-bearing part is slidably arranged on the auxiliary roller toward the axis of the auxiliary roller, and the base is provided with limiting grooves distributed in an array around the axis of the auxiliary roller, and the limiting grooves are plug-fitted with the pressure-bearing part.

6. The pressure roller for preparing a breathable film according to claim 5, characterized in that: The auxiliary roller is provided with a guide plate, the pressure receiving portion is in sliding cooperation with the guide plate, and an elastic block is in contact with the guide plate.

7. The pressure roller for preparing a breathable film according to claim 1, characterized in that: The auxiliary roller is provided with an inner cavity, and the scraping end gap is communicated with the inner cavity.

8. The pressure roller for preparing a breathable film according to claim 7, characterized in that: The base is provided with a suction port which is communicated with the inner cavity.

9. A casting machine for preparing a breathable film, comprising a cooling roller, characterized in that: It also includes a pressure roller for preparing a breathable film according to any one of claims 1 to 8, and: A first flow path, wherein the cooling medium passes through the cooling roller and the first flow path in sequence; The second flow path is in thermal contact with the first flow path and is communicated with the suction port.

10. The casting machine for preparing a breathable film according to claim 9, characterized in that: The first flow path surrounds the second flow path and shares a common wall with the second flow path.

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