Flaky natural rubber continuous drying method and production line layout

Abstract

The invention discloses a method for continuously drying flaky natural rubber and a production line layout. The method comprises the following steps: S1, creping; produced rubber blocks are subjected to multi-stage creping, and a large amount of moisture is removed through extrusion; s2, removing surface water; removing residual moisture on the surface of the sheet-shaped rubber sheet subjected to multi-stage creping; s3, cutting is carried out; performing fixed-length cutting on the film with the surface water removed; s4, film grouping, pre-pressing and film hanging are carried out, the cut films are combined through film grouping, and subsequent film hanging is facilitated; the pre-pressing can be used for pre-pressing creases on the films before the films are hung, so that the films on the two sides of the hanging rod are vertically downward; hanging the cut fixed-length film; s5, caching is carried out; conveying the hanging rods subjected to piece hanging; s6, drying; and transferring the sequentially arranged films to a drying warehouse for drying. Before the rubber sheets are hung, the rubber sheets are pressed into creases through the rubber sheet pre-pressing device, the distance between the hung rubber sheets and the adjacent rubber sheets is kept uniform from top to bottom, and the processing quality of the rubber sheets is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rubber primary processing, and particularly to a method for continuously drying sheet-shaped natural rubber and a layout of a production line. Background Art

[0002] Natural rubber is classified into smoked sheet rubber, standard rubber, crepe rubber, latex, etc. according to different manufacturing processes and shapes. Smoked sheet rubber is the most representative variety of natural rubber and was once the variety with the largest consumption and the widest application. Its main uses are in the production of rubber tires, cables, and conveyor belts. Its production process mainly involves filtration, acid coagulation, sheet pressing, drying, and smoking to produce smoked sheet rubber. Crepe rubber mainly uses latex coagulum or mixed rubber as raw materials, and is made into rubber through washing, rolling into a surface with wrinkles, and natural air drying or hot air drying. Crepe rubber is evaluated for its quality according to appearance, chemical composition, physical and mechanical properties, etc., and is divided into three types: white crepe, brown crepe, and black crepe. Each type is further divided into several grades, and there are differences between thin sheets and thick sheets.

[0003] Currently, in the drying process section of sheet-shaped rubber, due to uneven skills of workers, problems such as inadequate supervision during the baking process and poor fire control lead to undercooked products, and residual moisture causes the film to blister, be undercooked, and then mildew. Production practice shows that; for example, in the traditional production process, the pass rate of the finished product of smoked sheet rubber is about 75%, and the pass rate of grades above RSS3 is about 50%. At the same time, due to the low degree of automation in the natural rubber production process, a large amount of manual labor is required to transfer and control materials throughout the production process.

[0004] Therefore, in order to solve the problems of low automation degree and low yield rate in the existing production process of sheet-shaped natural rubber; the state of each production device cannot be monitored and controlled in a timely manner during the production process, and the manual operation intensity is large and the production efficiency is low, etc., it is necessary to develop a method for continuously drying sheet-shaped natural rubber and a layout of a production line. Summary of the Invention

[0005] To solve the problems of the existing technology, the purpose of the present invention is to provide a method for continuously drying sheet-shaped natural rubber and a layout of a production line, which uses a creping machine, a surface water removal device, a cutting machine, a sheet assembling device, a sheet hanging device, a buffer device, and a shuttle car to realize the automatic hanging and warehousing actions of the film after creping; uses a shuttle car and a heat pump drying warehouse to realize the outbound and drying actions of the hanging rods; the specific content is as follows:

[0006] A method for continuously drying sheet-shaped natural rubber includes the following steps:

[0007] S1, creping; performing multi-stage creping on the produced rubber blocks to remove a large amount of water by extrusion;

[0008] S2, Dewater the surface; remove the moisture remaining on the surface of the sheet-shaped film after multi-stage creping.

[0009] S3, Cut; cut the film with removed surface moisture to a fixed length.

[0010] S4, Hang the film; hang the film with a fixed length after cutting.

[0011] S5, Buffer; convey the hanging rods after hanging the film and arrange them in sequence.

[0012] S6, Dry; transfer the films arranged in sequence to a drying warehouse for drying.

[0013] The step S4 includes film grouping and pre-pressing. The cut films are combined through film grouping to facilitate subsequent film hanging. Pre-pressing can pre-press creases on the film before hanging, making the films on both sides of the hanging rod perpendicular downward when hanging the film.

[0014] Further, after multi-stage creping in the step S1, the moisture content of the film is ≤ 35%, and the film thickness is 4 - 10 mm; after dewatering the surface in the step S2, the moisture content of the film is ≤ 15%; after drying in the step S6, the moisture content of the film is ≤ 1%; when drying in the step S6, the drying temperature range is 80 - 90 °C.

[0015] The layout of the production line for a method of continuously drying sheet-shaped natural rubber includes: a creping machine, a surface dewatering device, a cutting machine, a film hanging section, a buffer device, a shuttle car, a heat pump drying warehouse, and a conveying device; the rubber block forms a film through multi-stage creping by the creping machine, the film is sent to the cutting machine to be cut into a size suitable for hanging the film, then it is hung through the film hanging section, after hanging, it enters the buffer device to adjust the interval between the hung films, and finally it is sent to the heat pump drying warehouse through the shuttle car for drying the film; the film is conveyed between the creping machine, the surface dewatering device, the cutting machine, and the film hanging section through the conveying device.

[0016] Further, the film hanging section includes a film grouping device, a film pre-pressing device, and a film hanging device; the film grouping device is installed on the conveying device; the conveying device includes a bracket, multiple sections of conveyor belts, several conveying rollers, and several motors; the film grouping device includes a rubber pushing plate, a reciprocating rod, a smooth rod, and a cylinder; the reciprocating rod is installed on the bracket on one side of the conveying device, one end of it horizontally extends towards the bracket on the other side of the conveyor belt and is fixedly connected to the rubber pushing plate; the other end of the reciprocating device is connected to the cylinder; the rubber pushing plate is installed above the conveyor belt, and its plate surface is parallel to the side surfaces of the brackets on both sides of the conveyor belt; the lower edge of the plate surface of the rubber pushing plate is close to but does not contact the upper surface of the conveyor belt; the smooth rod is fixedly installed on the bracket of the conveying device parallel to the reciprocating rod, a through hole is opened on the rubber pushing plate, and the smooth rod passes through the through hole opened on the rubber pushing plate; the reciprocating rod can drive the rubber pushing plate to move by stretching under the drive of the cylinder.

[0017] Further, the film pre-pressing device is installed on the conveying device and includes a cylinder, a pressing knife, a pressing seat and a frame; the frame straddles the conveyor belt and is installed on the bracket of the conveying device, the pressing seat is movably installed inside the frame, and the upper surface of the pressing seat is connected to the cylinder; a pressing groove is opened upward on the lower surface of the pressing seat, the length of the pressing groove is the same as the width of the conveyor belt of the conveying device, and both ends of the pressing groove are flush with both ends of the conveyor belt; the top of the pressing groove is arc-shaped, and its diameter is the same as that of the hanging rod used for hanging the film; the pressing knife is installed between two sections of the conveyor belt and is located directly below the pressing seat; the knife head of the pressing knife is arc-shaped and can be in clearance fit with the pressing groove, and the direction of the knife head is upward; one end of the pressing knife without the knife head is connected to the cylinder; the pressing knife and the pressing seat can be relatively extended under the drive of the cylinder to pre-press the film located on the conveying device.

[0018] Further, the film hanging device includes a hanging rod conveyor, a motor, and a rod storage box; the end of the conveying device is connected to the middle of the hanging rod conveyor, and the hanging rod conveyor forms a certain angle with the bottom surface; several hanging rods are arranged in the rod storage box and are fixedly connected to the lower part of the hanging rod conveyor; the hanging rod conveyor drives the hanging rods in the rod storage box to be conveyed upward by the motor, hangs the film hanging down from the end of the conveying device on the hanging rods and conveys it upward.

[0019] Further, the cutting machine includes a cutter holder, a cutter, and a cylinder. The cutter holder straddles the conveyor belt and is installed on the bracket of the conveying device. An installation hole is provided on the cutter for installing the cylinder, and the cylinder rod of the cylinder is fixedly connected to the cutter, enabling the cutter to cut vertically downward the film conveyed on the conveying device.

[0020] Further, the heat pump drying warehouse includes a heat pump device, a pipeline system, a box body and a fan; the pipeline system is respectively connected to the heat pump device and the box body; the fan is arranged inside the box body.

[0021] Further, the shuttle car includes a transverse track and a longitudinal track. A hanging rod support is arranged on the longitudinal track, and a groove matching the diameter of the hanging rod is opened on the upper surface of the hanging rod support.

[0022] Further, the surface water removal device includes an air knife device and a hot air device, and uses the air knife and hot air to remove the surface water of the film.

[0023] After the rubber blocks are processed through multiple creping processes, sheet rubber with a small amount of water is formed; then it is conveyed by a conveyor belt. When passing through the surface water removal device 5, the residual water on the surface of the rubber sheet 15 is blown off by the air knife device and the hot air device inside the surface water removal device 5; then it passes through the cutting machine 6, and the cutter 62 is driven by the cylinder 14 on the cutting machine 6 to press down to cut the rubber sheet 15 into a length suitable for hanging; when the rubber sheet 15 is conveyed to the sheet combining device 1, the conveyor belt changes from a single one to two side-by-side ones. The rubber sheet 15 conveyed is pushed to the other side-by-side conveyor belt by the rubber sheet pushing plate 11 of the sheet combining device 1. Then this conveyor belt stops conveying. After waiting for the rubber sheet 15 on the first conveyor belt to be conveyed again, two rubber sheets 15 are combined into a group. Then the rubber sheet pre-pressing device 2 pre-presses the rubber sheet 15 on the conveyor belt. While the cutter head of the pressing cutter 21 pushes upward, the pressing seat 22 presses downward to press a groove on the lower surface of the rubber sheet 15; the conveyor belt continues to convey. When passing through the end of the conveyor belt, one end of the rubber sheet 15 extends out of the end of the conveyor belt and naturally hangs downward. At this time, the hanging rod conveyor 31 conveys the hanging rod obliquely upward, and the hanging rod is inserted into the groove pressed on the lower surface of the rubber sheet 15 from below and hangs the rubber sheet 15 upward and sends it into the buffer device 7. Then the shuttle car 8 sends the rubber sheet 15 hung in the buffer device 7 into each heat pump drying warehouse 9 for drying. In the heat pump drying warehouse 9, the rubber sheet 15 is dried by hot air.

[0024] The present invention has the following beneficial effects compared with the prior art:

[0025] The present invention utilizes the automatic control of the sheet rubber production and processing equipment to improve the production efficiency of products; on the other hand, through the full control of the production process, the states of various production equipment are monitored and controlled in a timely manner, while improving the product quality, reducing the labor intensity of employees.

[0026] In this solution, before hanging the sheet, the rubber sheet is pressed out of creases by the rubber sheet pre-pressing device, so that the end of the rubber sheet can be kept vertically downward when hanging, and the distance between the hung rubber sheets from top to bottom and the adjacent rubber sheets is unified, further making the uniformity of the entire drying process better and improving the processing quality of the rubber sheet. Description of the Drawings

[0027] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the production line described in the present invention;

[0028] Figure 2 It is a top view of the overall structure of the production line described in the present invention;

[0029] Figure 3 It is a three-dimensional schematic diagram of the structure of the sheet combining device described in the present invention

[0030] Figure 4 It is a three-dimensional schematic diagram of the bottom structure of the sheet combining device described in the present invention;

[0031] Figure 5Schematic diagram of the installation structure of the sheet assembling device and the film pre-pressing device according to the present invention;

[0032] Figure 6 Front view sectional view of the film pre-pressing device according to the present invention;

[0033] Figure 7 Schematic diagram of the usage state of the film pre-pressing device according to the present invention;

[0034] Figure 8 Schematic diagram of the usage state of the film pre-pressing device according to the present invention;

[0035] Figure 9 Schematic diagram of the usage state of the sheet assembling device and the film pre-pressing device according to the present invention;

[0036] Figure 10 Schematic diagram of the usage state of the film hanging device according to the present invention;

[0037] Figure 11 Sectional view of the usage state of the film hanging device according to the present invention;

[0038] Figure 12 Front view sectional view of the cutting machine according to the present invention.

[0039] In the figure:

[0040] 1 - Sheet assembling device, 11 - Glue pushing plate, 12 - Reciprocating rod, 13 - Optical rod, 14 - Cylinder, 15 - Film;

[0042] 2 - Film pre-pressing device, 21 - Pressing knife, 22 - Pressing seat, 23 - Frame;

[0043] 3 - Film hanging device, 31 - Hanging rod conveyor, 32 - Motor, 33 - Rod storage box;

[0044] 4 - Creping machine; 5 - Dewatering device; 6 - Cutting machine, 61 - Knife rest, 62 - Cutting knife;

[0045] 7 - Buffer device; 8 - Shuttle car, 81 - Transverse track, 82 - Longitudinal track; 9 - Heat pump drying warehouse, 91 - Heat pump device, 92 - Pipeline system, 93 - Box body; 10 - Conveying device; Specific embodiments

[0046] In order to make the technical means, creative features, and achievements of the present invention easy to understand, the following further describes the technical solutions of the invention in combination with one of the embodiments and specific implementation manners of a method for continuous drying of sheet-shaped natural rubber and the layout of the production line given by the present invention.

[0047] As Figures 1-12 shown, the specific embodiments given for the invention are as follows:

[0048] The layout of the production line used for the continuous drying method of sheet natural rubber includes: a creping machine 4, a surface water removal device 5, a cutting machine 6, a sheet hanging part, a buffer device 7, a shuttle car 8, a heat pump drying warehouse 9, and a conveying device 10; the rubber block is subjected to multi-stage creping by the creping machine 4 to form a film 15, the film 15 is sent to the cutting machine 6 to be cut into a size suitable for hanging, and then is hung through the sheet hanging part. After hanging, the interval between the hung films 15 is adjusted through the buffer device 7, and finally the film 15 is sent to the heat pump drying warehouse 9 through the shuttle car 8 for drying; the film 15 is conveyed between the creping machine 4, the surface water removal device 5, the cutting machine 6, and the sheet hanging part through the conveying device 10.

[0049] The sheet hanging part includes a sheet grouping device 1, a film pre-pressing device 2, and a sheet hanging device 3 that are connected in sequence; the conveyor belt of the conveying device 10 has a width of a single film 15 before the sheet hanging part and becomes a width of a double film 15 when entering the sheet hanging part. Among them, in the part of the sheet grouping device 1, two conveyor belts with a width of a single film 15 form a width of a double film 15. The sheet grouping device 1 is installed on the conveying device 10; the conveying device 10 includes a bracket, multiple sections of conveyor belts, several conveying rollers, and several motors 32; the sheet grouping device 1 includes a rubber pushing plate 11, a reciprocating rod 12, a smooth rod 13, and a cylinder 14; the reciprocating rod 12 is installed on the bracket on one side of the conveying device 10, and one end of it horizontally extends to the bracket on the other side of the conveyor belt and is fixedly connected to the rubber pushing plate 11; the other end of the reciprocating device is connected to the cylinder 14; the rubber pushing plate 11 is installed above the conveyor belt, and its plate surface is parallel to the side surfaces of the brackets on both sides of the conveyor belt; the lower edge of the plate surface of the rubber pushing plate 11 is close to but does not contact the upper surface of the conveyor belt; the smooth rod 13 is fixedly installed on the bracket of the conveying device 10 parallel to the reciprocating rod 12, and the rubber pushing plate 11 is provided with a through hole, and the smooth rod 13 passes through the through hole opened on the rubber pushing plate 11; the reciprocating rod 12 can drive the rubber pushing plate 11 to move by stretching under the drive of the cylinder 14.

[0050] The film pre-pressing device 2 is installed on the conveying device 10 and includes a cylinder 14, a pressing knife 21, a pressing seat 22, and a frame 23; the frame 23 straddles the conveyor belt and is installed on the bracket of the conveying device 10, the pressing seat 22 is movably installed inside the frame 23, and the upper surface of the pressing seat 22 is connected to the cylinder 14; a pressing groove is opened upward on the lower surface of the pressing seat 22, the pressing groove has the same width as the conveyor belt of the conveying device 10, and both ends of the pressing groove are flush with both ends of the conveyor belt; the top of the pressing groove is arc-shaped, and its diameter is the same as that of the hanging rod used for hanging; the pressing knife 21 is installed between two sections of conveyor belts and is located directly below the pressing seat 22; the knife head of the pressing knife 21 is arc-shaped and can be in clearance fit with the pressing groove, and the direction of the knife head is upward; the end of the pressing knife 21 without a knife head is connected to the cylinder 14; the pressing knife 21 and the pressing seat 22 can relatively extend under the drive of the cylinder 14 to pre-press the film 15 located on the conveying device 10.

[0051] The hanging piece device 3 includes a hanging rod conveyor 31, a motor 32, and a rod storage box 33; the end of the conveying device 10 is connected to the middle of the hanging rod conveyor 31, and the hanging rod conveyor 31 forms a certain angle with the bottom surface; several hanging rods are arranged in the rod storage box 33 and are fixedly connected to the lower part of the hanging rod conveyor 31; the hanging rod conveyor 31 drives through the motor 32 to convey the hanging rods in the rod storage box 33 upward, hang the film 15 hanging down from the end of the conveying device 10 on the hanging rods and convey it upward.

[0052] The cutting machine 6 includes a cutter holder 61, a cutter 62, and a cylinder 14. The cutter holder 61 spans across the conveyor belt and is installed on the bracket of the conveying device 10. An installation hole is provided on the cutter 62 for installing the cylinder 14. The cylinder rod of the cylinder 14 is fixedly connected to the cutter 62, enabling the cutter 62 to vertically cut downward the film 15 conveyed on the conveying device 10. The heat pump drying chamber 9 includes a heat pump device 91, a pipeline system 92, a box body 93, and a blower; the pipeline system 92 is respectively connected to the heat pump device 91 and the box body 93; the blower is arranged inside the box body 93. The shuttle car 8 includes a transverse track 81 and a longitudinal track 82. A hanging rod support is provided on the longitudinal track 82, and a groove matching the diameter of the hanging rod is provided on the upper surface of the hanging rod support. The surface water removal device 5 includes an air knife device and a hot air device, and uses the air knife and hot air to remove the surface water of the film 15.

[0053] A method for continuously drying sheet-shaped natural rubber includes the following steps:

[0054] S1, creping; performing multi-stage creping on the produced rubber blocks to remove a large amount of water through extrusion; after multi-stage creping in step S1, the moisture content of the film 15 is ≤ 35%, and the sheet thickness is 4 - 10 mm;

[0055] S2, surface water removal; removing the residual water on the surface of the sheet-shaped film 15 after multi-stage creping;

[0056] S3, cutting; performing fixed-length cutting on the film 15 after removing the surface water; after surface water removal in step S2, the moisture content of the film 15 is ≤ 15%;.

[0057] S4, hanging pieces; hanging the fixed-length film 15 after cutting; when hanging pieces, it includes film 15 grouping and pre-pressing. The cut film 15 is combined through film 15 grouping to facilitate subsequent hanging of pieces; pre-pressing can pre-press creases on the film 15 before hanging pieces, making the film 15 on both sides of the hanging rod vertically downward when hanging pieces;

[0058] S5, buffering; conveying the hanging rods after hanging pieces and arranging them in sequence;

[0059] S6, drying; transporting the film 15 arranged in sequence to the drying chamber for drying; after drying in step S6, the moisture content of the film 15 is ≤ 1%; when drying in step S6, the drying temperature range is 80 - 90 °C.

[0060] After the rubber block is processed by multi-stage creping, a small amount of sheet rubber containing water is formed; then it is transported by the conveyor belt, and when it passes through the surface water removal device 5, the wind knife device and the hot air device in the surface water removal device 5 blow away the residual water on the surface of the film 15; then it passes through the cutter 6, and the cylinder 14 on the cutter 6 drives the cutter 62 to press down to cut the film 15 into a length suitable for hanging film; when the film 15 is transported to the sheet assembly device 1, the conveyor belt changes from a single strip to a double strip arranged in parallel, and the rubber pusher 11 of the sheet assembly device 1 pushes the conveyed film 15 to another parallel conveyor belt, and then the conveyor belt stops conveying and waits for the rubber on the first conveyor belt to be removed. After the film 15 is transported again, two films 15 are combined into a group, and then the film pre-pressing device 2 pre-presses the film 15 on the conveyor belt, and the pressure knife 21 pushes the knife head upward while the pressure seat 22 presses downward, pressing a groove on the lower surface of the film 15; the conveyor belt continues to convey, and when passing the end of the conveyor belt, one end of the film 15 extends out of the end of the conveyor belt and naturally hangs down. At this time, the hanging rod conveyor 31 conveys the hanging rod obliquely upward, and the hanging rod is stuck in the groove pressed on the lower surface of the film 15 and hangs the film 15 upward and sends it into the buffer device 7, and then the shuttle car 8 sends the hung film 15 in the buffer device 7 to each heat pump drying warehouse 9 for drying. The heat pump drying warehouse 9 uses hot air to dry the film 15.

[0061] It should be understood that the above specific embodiments are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. The claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A method for continuously drying sheet-like natural rubber, characterized in that: The following steps are involved: S1, crepe; the produced rubber block is subjected to multi-stage crepe to remove a large amount of water by squeezing; S2, removing surface water; removing the water remaining on the surface of the sheet film (15) after the multi-stage crepe sheet; S3, cutting; cutting the film (15) from which the surface water has been removed to a fixed length; S4, hanging film; hanging the cut fixed-length film (15); S5, caching; transporting the hanging rods after hanging the sheets and arranging them in sequence; S6, drying; transporting the sequentially arranged films (15) to a drying warehouse for drying; The step S4 includes film (15) grouping and pre-pressing. The cut films (15) are combined by the film (15) grouping to facilitate subsequent hanging. The pre-pressing can pre-press folds on the films (15) before hanging, so that the hanging makes the films (15) on both sides of the hanging rod vertically downward.

2. The method for continuous drying of sheet-like natural rubber according to claim 1, characterized in that: After the multi-stage creping in step S1, the moisture content of the film (15) is ≤35%, and the film thickness is 4-10 mm; after the surface water is removed in step S2, the moisture content of the film (15) is ≤15%; after the drying in step S6, the moisture content of the film (15) is ≤1%; the drying temperature range of the drying in step S6 is 80-90°C.

3. The production line layout used in the method for continuous drying of sheet-like natural rubber according to claim 1, characterized in that: include: A sheet creping machine (4), a surface water removal device (5), a cutting machine (6), a sheet hanging section, a buffer device (7), a shuttle vehicle (8), a heat pump drying storehouse (9) and a conveying device (10); the rubber block is subjected to multi-stage creping by the sheet creping machine (4) to form a sheet (15); the sheet (15) is sent to the cutting machine (6) to be cut into a suitable sheet size for hanging, and then is hung by the sheet hanging section, and then enters the buffer device (7) to adjust the interval between the hung sheets (15), and finally is sent to the heat pump drying storehouse (9) by the shuttle vehicle (8) to dry the sheet (15); the sheet (15) is transported between the sheet creping machine (4), the surface water removal device (5), the cutting machine (6) and the sheet hanging section by the conveying device (10).

4. The production line layout used in the method for continuous drying of sheet-like natural rubber as claimed in claim 3, characterized in that: The sheet hanging part comprises a sheet assembling device (1), a sheet pre-pressing device (2) and a sheet hanging device (3); the sheet assembling device (1) is installed on a conveying device (10); the conveying device (10) comprises a bracket, a plurality of conveying belts, a plurality of conveying rollers and a plurality of motors (32); the sheet assembling device (1) comprises a rubber pushing plate (11), a reciprocating rod (12), a light rod (13) and a cylinder (14); the reciprocating rod (12) is arranged on a bracket on one side of the conveying device (10), and one end thereof extends horizontally to the bracket on the other side of the conveying belt and is fixedly connected to the rubber pushing plate (1 ... the reciprocating rod (12) is arranged on a bracket on one side of the conveying device (10). The other end of the reciprocating device is connected to the cylinder (14); the rubber pushing plate (11) is arranged and installed above the conveyor belt, and its plate surface is parallel to the side surfaces of the brackets on both sides of the conveyor belt; the lower edge of the rubber pushing plate (11) is close to but not in contact with the upper surface of the conveyor belt; the light rod (13) is fixedly arranged and installed on the bracket of the conveying device (10) parallel to the reciprocating rod (12), and a through hole is provided on the rubber pushing plate (11), and the light rod (13) passes through the through hole provided on the rubber pushing plate (11); the reciprocating rod (12) can be extended and retracted under the drive of the cylinder (14) to drive the rubber pushing plate (11) to move.

5. The production line layout used in the method for continuous drying of sheet-like natural rubber according to claim 4, characterized in that: The film pre-pressing device (2) is arranged and installed on the conveying device (10), and comprises a cylinder (14), a pressing knife (21), a pressing seat (22) and a frame (23); the frame (23) is erected on a bracket of the conveying device (10) across the conveying belt, the pressing seat (22) is movably installed inside the frame (23), and the upper surface of the pressing seat (22) is connected to the cylinder (14); the lower surface of the pressing seat (22) is provided with a pressing groove upward, the length of the pressing groove is the same as the width of the conveying belt of the conveying device (10), and the pressing groove The two ends are flush with the two ends of the conveyor belt; the top of the pressing groove is arc-shaped, and its diameter is the same as the hanging rod used for hanging films; the pressing knife (21) is arranged and installed between two sections of the conveyor belt, and is located directly below the pressing seat (22); the knife head of the pressing knife (21) is arc-shaped and can fit in the gap of the pressing groove, and the knife head is directed upward; the end of the pressing knife (21) without the knife head is connected to the cylinder (14); the pressing knife (21) and the pressing seat (22) can be extended relative to each other under the drive of the cylinder (14) to pre-press the film (15) located on the conveying device (10).

6. The production line layout used in the method for continuous drying of sheet-like natural rubber according to claim 4, characterized in that: The film hanging device (3) comprises a hanging rod conveyor (31), a motor (32), and a rod storage box (33); the end of the conveying device (10) is connected to the middle of the hanging rod conveyor (31), and the hanging rod conveyor (31) forms a certain angle with the bottom surface; a plurality of hanging rods are arranged in the rod storage box (33), and are fixedly connected to the lower part of the hanging rod conveyor (31); the hanging rod conveyor (31) is driven by the motor (32) to transport the hanging rods in the rod storage box (33) upward, and the film (15) hanging from the end of the conveying device (10) is hung on the hanging rods and transported upward.

7. The production line layout used in the method for continuous drying of sheet-like natural rubber as claimed in claim 3, characterized in that: The cutting machine (6) comprises a cutting frame (61), a cutting knife (62), and a cylinder (14). The cutting frame (61) is mounted on a bracket of the conveying device (10) across the conveying belt. The cutting knife (62) is provided with a mounting hole for mounting the cylinder (14). The cylinder (14) rod of the cylinder (14) is fixedly connected to the cutting knife (62), so that the cutting knife (62) can vertically downwardly cut the film (15) conveyed on the conveying device (10).

8. The production line layout used in the method for continuous drying of sheet-like natural rubber as claimed in claim 3, characterized in that: The heat pump drying store (9) comprises a heat pump device (91), a pipeline system (92), a box (93) and a fan; the pipeline system (92) is connected to the heat pump device (91) and the box (93) respectively; and the fan is arranged inside the box (93).

9. The production line layout used in the method for continuous drying of sheet-like natural rubber according to claim 3, characterized in that: The shuttle vehicle (8) comprises a transverse track (81) and a longitudinal track (82). A hanging rod support is arranged on the longitudinal track (82). A groove matching the diameter of the hanging rod is formed on the upper surface of the hanging rod support.

10. The production line layout used in the method for continuous drying of sheet-like natural rubber according to claim 3, characterized in that: The surface water removal device (5) comprises an air knife device and a hot air device, and uses the air knife and hot air to remove the surface water of the film (15).

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