Device for automatic production line of plant fiber disc-shaped product and working method therefor

Abstract

A device for an automatic production line of a plant fiber disc-shaped product and a working method therefor. The device comprises a pre-cutting apparatus (1) and a mold pressing apparatus (2), wherein the pre-cutting apparatus is used for pre-cutting a pulp board body (61) into a prefabricated pulp board (6), the mold pressing apparatus is used for carrying out compression molding on the prefabricated pulp board, the pulp board body is pulled into the pre-cutting apparatus for pre-cutting, a plurality of through holes (7) and initially rolled blanks (62) located in the through holes for forming a product are formed on a plane of the pulp board body, a plurality of connecting parts (8) distributed at intervals are connected between the outer edge of each initially rolled blank and the edge of the corresponding through hole, and each connecting part is of a structure capable of being unfolded and deformed under tension. In the compression molding process of the initially rolled blanks, the connecting parts arranged on the periphery of each initially rolled blank can be pulled, so that the connecting parts play a role in deformation and extension, the prefabricated pulp board cannot move in the horizontal direction when being formed in a press mold, the yield is greatly improved, and thus high production efficiency of the automatic production line of the plant fiber disc-shaped product is achieved.

Description

Equipment and working method of automated production line for plant fiber disc-shaped products Technical Field

[0001] The present invention relates to the technical field of production equipment for plant fiber products, and in particular to equipment for an automated production line for plant fiber disc-shaped products and a working method thereof. Background Art

[0002] The pulp molding process is divided into wet pressing and dry pressing. The dry pressing process is to directly unwind or loosen the roll-shaped or flat-plate pulp sheet without crushing and beating, and without adding water medium. According to product needs, latex resin or appropriate additives are sprayed during the transportation process, and then the pulp sheet coated with additives is sent to the hot press for hot pressing and drying. The pulp sheet after hot pressing and drying is then cut off by a trimming machine to finally obtain the finished product of the plant fiber disc product.

[0003] The pulp board coated with additives is hot pressed and dried in the hot pressing mold of the hot pressing machine. In order to improve production efficiency, the hot pressing mold is usually designed as a one-mold multi-cavity structure, and then hot pressed and dried in the following two ways.

[0004] 1. First, the pulp sheet is cut into multiple blanks for forming products according to the shape of the plant fiber disc-shaped product. The number of blanks is the same as the number of mold cavities. Then, multiple blanks are transferred to the hot pressing lower mold at the same time. Each blank corresponds to the position of the corresponding mold cavity. Then, all the blanks are hot-pressed and dried at once by the hot pressing mold to form a forming paper mold. Usually, the pulp sheet is in a roll shape and needs to be unwound by an uncoiler first. The blanks cut from the pulp sheet after unwinding have serious warping. The warped blanks are difficult to align with the mold cavity, which may eventually lead to incomplete forming of the forming paper mold.

[0005] 2. The whole pulp board is directly sent to the hot pressing mold for hot pressing, drying and molding. During the molding process, multiple molding parts of the pulp board are simultaneously compressed and deformed. Each molding part pulls the pulp board separately, and the whole pulp board is easy to move in the horizontal direction. The final molding paper mold has a high defective rate.

[0006] Since the qualified rate of the formed paper mold cannot be guaranteed, it is difficult to improve the production efficiency of the automated production line for the plant fiber disc-shaped products in the prior art.

[0007] Summary of the Invention

[0008] The object of the present invention is to provide an equipment and a working method for an automated production line of plant fiber disc-shaped products, so as to increase the production efficiency of the automated production line of plant fiber disc-shaped products.

[0009] In order to solve the above technical problems, the present invention provides an equipment and working method for an automated production line of plant fiber disc-shaped products, the equipment including a pre-cutting device and a molding device, the pre-cutting device is used to pre-cut a pulp board body into a prefabricated pulp board, and the molding device is used to mold the prefabricated pulp board, the prefabricated pulp board including a pulp board body, a plane of the pulp board body is formed with a plurality of through holes and a preliminary blank plate located in the through holes for molding products, the outer edge of the preliminary blank plate and the edge of the through hole are connected with a plurality of spaced connection parts, the connection part is a structure that is deformed by tension, and during the molding process of the preliminary blank plate, the connection parts arranged around it will be pulled to deform and elongate the connection parts.

[0010] Furthermore, it is characterized in that an uncoiler is provided on the feeding side of the pre-cutting device, which is used to unwind the rolled pulp board body, and a first traction mechanism is provided on the discharge side of the pre-cutting device, and a second traction mechanism is provided on the discharge side of the molding device. The pulp board body unwound by the uncoiler is first pulled into the pre-cutting device by the first traction mechanism for pre-cutting, and the pre-cut prefabricated pulp board is then pulled into the molding device by the second traction mechanism for molding.

[0011] Furthermore, it is characterized in that a coating machine is provided between the uncoiler and the pre-cutting device, the pulp sheet body unwound by the uncoiler first enters the coating machine for additive coating, and the coated pulp sheet body then enters the pre-cutting device for pre-cutting.

[0012] Furthermore, it is characterized in that a trimming machine and a side material slitting device are provided on the discharge side of the molding device, a third traction mechanism is provided on the discharge side of the trimming machine, and a fourth traction mechanism is provided on the feed side of the side material slitting device. The prefabricated pulp board after molding is pulled into the trimming machine by the third traction mechanism for trimming, and the side material generated by the trimming machine is pulled into the side material slitting device by the fourth traction mechanism for slitting.

[0013] Furthermore, a conveying device and a stacking machine are arranged in sequence on one side of the trimming machine, and the conveying device conveys the plant fiber disc-shaped products punched by the trimming machine to the stacking machine for stacking.

[0014] Furthermore, the pre-cutting device is a die-cutting machine, and the molding device is a hot press, and the molding device is used to perform hot pressing, forming and drying on the prefabricated pulp board.

[0015] Furthermore, the connecting portion is a continuous plane structure, which is a linear plate that meanders multiple times in the continuous plane.

[0016] Furthermore, the automated production line of the plant fiber disc-shaped product and its working method include the following steps: S1, the uncoiler first unwinds the roll-shaped pulp board body, and under the traction action of the first traction mechanism, the unwound pulp board body first enters the coating machine for additive coating, and the coated pulp board body then enters the pre-cutting device for pre-cutting; S2, the pre-cut pulp board body is pulled into the molding device by the second traction mechanism for molding; S3, the molded pulp board body is pulled into the trimming machine by the third traction mechanism for trimming, wherein the edge material generated by the trimming machine is pulled into the edge material slitting device by the fourth traction mechanism for slitting, and the plant fiber disc-shaped product punched by the trimming machine is transported to the stacking machine by the conveying device for stacking.

[0017] During the molding process of the pre-blank plate by the molding device, the connecting parts pre-cut by the pre-cutting device on its four sides will be pulled, so that the connecting parts can play a role of deformation and elongation, so that the pre-pulped plate will not cause movement in the horizontal direction when it is molded in the die. Therefore, each pre-blank plate can be completely molded in the molding device, and the yield rate is greatly improved. Since the pre-blank plate in the present invention will not cause the pre-pulped plate to move in the horizontal direction when it is molded, that is, each pre-blank plate does not interfere with each other during molding, the molding device can mold all the pre-blank plates on the pre-pulped plate at one time, and the production efficiency is relatively high. Therefore, the automated production line of the plant fiber disc-shaped products of the present invention has high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a schematic diagram of equipment for an automated production line of plant fiber disc-shaped products according to the present invention.

[0019] FIG2 is a top view of FIG1 .

[0020] FIG3 is a perspective view of the pre-cutting device.

[0021] FIG4 is a perspective view of a prefabricated pulp plate.

[0022] FIG5 is a top view of FIG4 .

[0023] FIG6 is a top view of the connecting portion.

[0024] FIG7 is a comparison diagram of the first connecting element before and after deformation.

[0025] FIG8 is a perspective view of the first connecting element after deformation and elongation.

[0026] FIG9 is a perspective view of another pre-pulped plate.

[0027] FIG10 is a top view of FIG9 .

[0028] FIG11 is a three-dimensional view of the prefabricated pulp board of FIG4 after being formed.

[0029] Explanation of the accompanying reference numerals: 1 pre-cutting device; 11 first traction mechanism; 111 active roller; 112 fixed shaft; 113 motor; 114 driven roller; 2 molding device; 21 second traction mechanism; 31 uncoiler; 32 coating machine; 41 trimmer; 411 third traction mechanism; 42 edge material slitting device; 421 fourth traction mechanism; 5 conveying device; 51 stacking machine; 6 prefabricated pulp board; 61 pulp board body; 62 blank board; 7 through hole; 70 vacant space; 8 connecting part; 801 first end; 802 second end; 81 first connecting element; 811 central strip board; 812 first strip board; 813 first connecting plate; 814 second strip board; 815 second connecting plate; 9 second connecting element; 91 central separation longitudinal line; deformation elongation A.

[0030] DETAILED DESCRIPTION

[0031] Please refer to Figures 1-2. The present invention provides an equipment and working method for an automated production line of plant fiber products. The equipment includes a pre-cutting device 1 and a molding device 2. The pre-cutting device 1 is used to pre-cut a pulp board body 61 into a prefabricated pulp board 6. The pre-cutting device 1 can be a die-cutting machine or a laser cutting machine, and the molding device 2 is used to mold the prefabricated pulp board 6. The molding device 2 can be a hot press. The prefabricated pulp board 6 is hot-pressed and dried by the molding device 2. The molding device 2 can also be a cold press.

[0032] The feeding side of the pre-cutting device 1 is provided with an uncoiler 31, and a coating machine 32 is further provided between the uncoiler 31 and the pre-cutting device 1. The uncoiler 31 is used to unwind the roll-shaped pulp sheet body 61, and the discharge side of the pre-cutting device 1 is provided with a first traction mechanism 11, and the discharge side of the molding device 2 is provided with a second traction mechanism 21, a trimmer 41 and a side material slitting device 42 arranged in sequence, the discharge side of the trimmer 41 is provided with a third traction mechanism 411, and the feed side of the side material slitting device 42 is provided with a fourth traction mechanism 421.

[0033] When the equipment of the automated production line is in operation, the pulp board body 61 unwound by the uncoiler 31 enters the coating machine 32 for additive coating under the traction action of the first traction mechanism 11. The coating machine 32 coats the functional additive on the pulp board body 61 by spraying, brushing, roller coating, or direct dipping. The functional additive is a waterproof agent or an oil-proof agent. In this embodiment, the coating machine 32 preferably adopts a roller coating method for coating. The coated pulp board body 61 then enters the pre-cutting device 1 for pre-cutting. The pre-cut prefabricated pulp board 6 is then pulled to the molding device 2 by the second traction mechanism 21 for molding. After molding, the prefabricated pulp board 6 is pulled to the cutting edge by the third traction mechanism 411. The trimming is performed in the machine 41, and the edge material produced by the trimming machine 41 is pulled to the edge material slitting device 42 by the fourth traction mechanism 421 for slitting. The edge material slitting device 42 cuts the edge material into segments, and the edge material cut into segments is convenient for transportation and placement. A conveying device 5 and a stacking machine 51 arranged in sequence are provided on one side of the trimming machine 41; preferably, the conveying device 5 is a conveyor belt, and the feeding end of the conveying device 5 extends under the trimming die of the trimming machine 41, and the plant fiber disc-shaped product punched by the trimming die of the trimming machine 41 falls directly on the conveying device 5, and the conveying device 5 conveys the plant fiber disc-shaped product punched by the trimming machine 41 to the stacking machine 51 for stacking, so that continuous automatic production can be achieved and production efficiency is higher.

[0034] Please refer to FIG. 1 , the first traction mechanism 11 , the second traction mechanism 21 , the third traction mechanism 411 and the fourth traction mechanism 421 have the same structure but are installed in different positions.

[0035] Please refer to Figure 3. The discharge side of the pre-cutting device 1 is rotatably provided with the aforementioned first traction mechanism 11. The first traction mechanism 11 includes an active rod 111 and a fixed shaft 112. The fixed shaft 112 is located above the active rod 111. One end of the active rod 111 is transmission-connected to a motor 113. The motor 113 is provided on the discharge side of the aforementioned pre-cutting device 1. A pair of spaced-apart driven rollers 114 are pivotally sleeved on the fixed shaft 112. The pulp board body 61 is inserted between the active rod 111 and the driven rollers 114. The spaced-apart driven rollers 114 are respectively pressed against the top surfaces of the two side edges of the prefabricated pulp board 6. The active rod 111 is driven to rotate by the motor 113, thereby driving the prefabricated pulp board 6 to translate.

[0036] Please refer to Figures 4-5. The prefabricated pulp board 6 includes a pulp board body 61. The pulp board body 61 is pulled into the aforementioned pre-cutting device 1 for pre-cutting, so that a plurality of through holes 7 and a blank plate 62 for forming products are formed on the plane of the pulp board body 61. The outer edge of the blank plate 62 is connected to the edge of the through hole 7 by a plurality of spaced-apart connecting parts 8. The connecting part 8 is a structure that can be deformed by tension. During the molding process, the blank plate 62 will pull the connecting parts 8 arranged around it, so that the connecting parts 8 play a role of deformation and elongation, so that the blank plate 62 of the prefabricated pulp board 6 of the present invention will not cause movement in the horizontal direction when being molded in the mold. Therefore, each blank plate 62 can be completely molded in the mold.

[0037] A relatively large separation space 70 is formed between the outer edge of the preform plate 62 and the edge of the through hole 7, so that the preform plate 62 can remain flat and not warp under the elastic action of the connecting parts 8 provided around it before molding. In addition, due to the relatively large separation space 70, if relative displacement occurs between the preform plate 62 and the pulp plate body 61 during the molding process, the prefabricated pulp plate 6 will not move in the horizontal direction.

[0038] Please refer to the schematic diagram of the connecting portion 8 shown in Figures 4-6. The connecting portion 8 is a continuous plane structure, which is a linear plate that meanders multiple times in the continuous plane. The connecting portion 8 includes a first connecting element 81. The first connecting element 81 includes an odd number of strip plates, which are linearly arranged side by side at intervals. Three strip plates are linearly arranged side by side at intervals for illustration. Among them, with the central strip plate 811 located in the center as a reference, the first strip plate 812 and the second strip plate 814 are arranged on both sides of the central strip plate 811. One end of the first strip plate 812 is connected to the pre-blank plate 62. In this embodiment, one end of the first strip plate 812 is the first end 801. The first strip plate 812 is connected to the pre-blank plate 62. The other end of 12 is connected to one end of the central strip plate 811 by means of the first connecting plate 813, and one end of the second strip plate 814 is connected to the pulp board body 61. In this embodiment, one end of the second strip plate 814 is the second end 802, and the other end of the second strip plate 814 is connected to the other end of the central strip plate 811 by means of the second connecting plate 815, that is, the first strip plate 812, the first connecting plate 813, the central strip plate 811, the second connecting plate 815 and the second strip plate 814 are combined into a first connecting element 81. Before the preformed pulp board 6 is molded, the green plate 62 can remain flat and not warped under the elastic action of the first connecting elements 81 around it.

[0039] The first end 801 of the connecting portion 8 is connected to the preformed plate 62, and the second end 802 is connected to the pulp board body 61. The connecting portion 8 is at least a pair of first connecting elements 81 that are arranged diagonally opposite to each other and extend in opposite directions. In this embodiment, two pairs of first connecting elements 81 are connected between the pulp board body 61 and the preformed plate 62. It is best for the two pairs of first connecting elements 81 to be located at two symmetrical edges of the preformed plate 62 and connected to the pulp board body 61. This can enable the prefabricated pulp board 6 to achieve a more stable pulling state when being formed in the die, so that each preformed plate 62 can be completely formed in the die.

[0040] 7-8 , in the initial state, the first connecting element 81 is a planar structure, which becomes a Z-shaped three-dimensional structure after deformation and elongation, and the deformation and elongation amount is A.

[0041] Please refer to another embodiment of the connecting portion shown in Figures 9-10. The connecting portion is a second connecting element 9, which is composed of a pair of adjacently arranged and symmetrically positioned first connecting elements 81. A central separating longitudinal line 91 is provided between the two adjacently arranged and symmetrically positioned first connecting elements 81. Before being molded, the rough board 62 of the prefabricated pulp board 6 can remain flat and not warped under the elastic action of the second connecting elements 9 around it.

[0042] Please refer to Figure 11. During the molding process, the green sheet 62 of the prefabricated pulp board 6 will pull the connecting parts 8 around it. The connecting parts 8 are deformed and elongated under the pulling action. The elastic compensation of the connecting parts 8 is used. When the green sheet 62 and the pulp board body 61 are relatively displaced, the prefabricated pulp board 6 will not cause movement in the horizontal direction. Therefore, the green sheet 62 can be completely molded in the mold. The dry pressing pulp molding prefabricated pulp board 6 of the present invention will not cause movement in the horizontal direction when being molded in the mold.

[0043] A working method of an automated production line for plant fiber disc-shaped products includes the following steps.

[0044] S1: The uncoiler 31 first unwinds the roll-shaped pulp sheet body 61. Under the traction action of the first traction mechanism 11, the unrolled pulp sheet body 61 first enters the coating machine 32 for additive coating, and then enters the pre-cutting device 1 for pre-cutting.

[0045] S2: The pre-cut pulp board body 61 is pulled into the molding device 2 by the second pulling mechanism 21 for molding.

[0046] S3: The pulp board body 61 after molding is pulled into the trimming machine 41 by the third traction mechanism 411 for trimming, wherein the edge material produced by the trimming machine 41 is pulled into the edge material slitting device 42 by the fourth traction mechanism 421 for slitting, and the plant fiber disc-shaped product obtained by punching by the trimming machine 41 is conveyed to the stacking machine 51 by the conveying device 5 for stacking.

[0047] Before the molding, the green sheet 62 can be kept flat and not warped under the elastic action of the connecting parts 8 around it; during the molding process, the green sheet 62 will pull the connecting parts 8 around it, so that the connecting parts 8 can play a role of deformation and elongation. The elastic compensation of the connecting parts 8 can compensate for the relative displacement between the green sheet 62 and the pulp board body 61. The prefabricated pulp board 6 will not cause horizontal movement. Therefore, each green sheet 62 can be completely molded in the molding device 2, and the yield rate is greatly improved. Different from the prior art, which directly sends the entire pulp board to the hot pressing mold Hot pressing and drying are carried out to form the pulp board. During the forming process, multiple forming parts of the pulp board are simultaneously pressurized and concavely deformed. Each forming part pulls the pulp board respectively, and the entire pulp board is easy to move in the horizontal direction. The final formed paper mold has a high defective rate. In the present invention, the blank board 62 will not cause the prefabricated pulp board 6 to move in the horizontal direction when forming, that is, each blank board 62 does not interfere with each other during forming. Therefore, the molding device 2 can mold all the blank boards 62 on the prefabricated pulp board 6 at one time, and the production efficiency is relatively high. The automated production line of the plant fiber disc-shaped products in this embodiment has high production efficiency.

[0048] In summary, the present invention provides an equipment and working method for an automated production line of plant fiber disc-shaped products, the equipment comprising a pre-cutting device 1 and a molding device 2, the pre-cutting device 1 being used to pre-cut the pulp board body 61 into a prefabricated pulp board 6, the molding device 2 being used to mold the prefabricated pulp board 6, the pulp board body 61 being pulled into the aforementioned pre-cutting device 1 for pre-cutting, so that a plane of the pulp board body 61 is formed with a plurality of through holes 7 and a preliminary blank 62 located in the through holes 7 for molding products, the outer edge of the preliminary blank 62 is connected to the edge of the through hole 7 by a plurality of spaced connection parts 8, the connection part 8 being a structure that can be subjected to tension and deformed to expand, the preliminary blank 62 will pull the connection parts 8 arranged around it during the molding process, so that the connection parts 8 play a role of deformation and elongation, so that the prefabricated pulp board 6 will not cause movement in the horizontal direction when being molded in the die.

Claims

1. [Corrected 18.10.2024 in accordance with Rule 91] An automated production line for vegetable fiber disc-shaped products, characterized in that: The equipment includes a pre-cutting device and a molding device. The pre-cutting device is used to pre-cut a pulp board body into a prefabricated pulp board, and the molding device is used to mold the prefabricated pulp board. The prefabricated pulp board includes a pulp board body. A plane of the pulp board body is formed with a plurality of through holes and a blank plate for molding products located in the through holes. The outer edge of the blank plate is connected to the edge of the through hole with a plurality of spaced connection parts. The connection part is a structure that is deformed by tension. During the molding process, the blank plate will pull the connection parts arranged around it to deform and elongate the connection parts.

2. [Corrected 18.10.2024 according to Rule 91] Equipment for an automated production line for vegetable fiber disc-shaped products according to claim 1, characterized in that: The feeding side of the pre-cutting device is provided with an uncoiler, which is used to unwind the roll-shaped pulp board body, and the discharging side of the pre-cutting device is provided with a first traction mechanism, and the discharging side of the molding device is provided with a second traction mechanism. The pulp board body unrolled by the uncoiler is first pulled into the pre-cutting device by the first traction mechanism for pre-cutting, and the pre-cut prefabricated pulp board is then pulled into the molding device by the second traction mechanism for molding.

3. [Corrected 18.10.2024 according to Rule 91] Equipment for an automated production line for vegetable fiber disc-shaped products according to claim 2, characterized in that: A coating machine is arranged between the unwinding machine and the pre-cutting device. The pulp sheet body unwinding from the unwinding machine first enters the coating machine for additive coating, and then enters the pre-cutting device for pre-cutting.

4. [Corrected 18.10.2024 according to Rule 91] Equipment for an automated production line for vegetable fiber disc-shaped products according to claim 3, characterized in that: The discharge side of the molding device is provided with a trimming machine and a side material slitting device, the discharge side of the trimming machine is provided with a third traction mechanism, and the feed side of the side material slitting device is provided with a fourth traction mechanism. The prefabricated pulp board after molding is pulled into the trimming machine by the third traction mechanism for trimming, and the side material generated by the trimming machine is pulled into the side material slitting device by the fourth traction mechanism for slitting.

5. [Corrected 18.10.2024 according to Rule 91] Equipment for an automated production line for vegetable fiber disc-shaped products according to claim 4, characterized in that: A conveying device and a stacking machine are arranged in sequence on one side of the trimming machine. The conveying device conveys the plant fiber disc-shaped products punched by the trimming machine to the stacking machine for stacking.

6. [Corrected 18.10.2024 according to Rule 91] Equipment for an automated production line for vegetable fiber disc-shaped products according to any one of claims 1 to 5, characterized in that: The pre-cutting device is a die-cutting machine, and the molding device is a hot press machine, and the molding device is used for hot-pressing, molding and drying the prefabricated pulp board.

7. [Corrected 18.10.2024 according to Rule 91] Equipment for an automated production line for vegetable fiber disc-shaped products according to claim 1, characterized in that: The connecting portion is in a continuous plane structure, which is a linear plate that meanders multiple times in the continuous plane.

8. [Corrected 18.10.2024 in accordance with Rule 91] A working method of equipment for an automated production line of plant fiber disc-shaped products, characterized in that: The equipment of the automated production line of the plant fiber disc-shaped product according to claim 5 comprises the following steps: S1: The unwinder first unwinds the roll-shaped pulp sheet body. Under the traction of the first traction mechanism, the unwinding pulp sheet body first enters the coating machine for additive coating, and then enters the pre-cutting device for pre-cutting. S2 The pre-cut pulp board body is pulled into the molding device by the second pulling mechanism for molding; The pulp board body after S3 compression molding is towed by the third traction mechanism to the trimming machine for trimming, wherein the edge material produced by the trimming machine is towed by the fourth traction mechanism to the edge material slitting device for slitting, and the plant fiber disc-shaped product punched by the trimming machine is conveyed to the stacking machine by the conveying device for stacking.

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