Improved structure of loose gridding cloth gluing device of wood pulp gridding paper production line

Abstract

The utility model relates to the technical field of wood pulp gridding paper production and manufacturing, in particular to an improved structure of a loose gridding cloth gluing device of a wood pulp gridding paper production line. Comprising a glue spreading roller, a glue pressing roller arranged above the glue spreading roller, a glue spreading pool arranged below the glue spreading roller, a first transfer roller of which the lower side of the roller surface is immersed in the glue spreading pool, and a second transfer roller which is arranged between the glue spreading roller and the first transfer roller and is in contact with the glue spreading roller and the first transfer roller, wherein a layer of cylindrical moisture absorption film is sleeved on the outer circle of the glue spreading roller. According to the utility model, the stable control of the gluing thickness of the loose gridding cloth for online lapping is realized, the gluing uniformity of the loose gridding cloth is improved, and the production quality of wood pulp gridding paper is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wood pulp grid paper production and manufacturing, in particular to an improved structure of a sparse grid cloth gluing device of a wood pulp grid paper production line. Background Art

[0002] Wood pulp grid paper is a cleaning product commonly used in industry for absorbing liquids, removing stains and wiping surfaces. Typical wood pulp grid paper is usually a three-layer composite structure, the middle layer is a sparse grid material layer made of fiber material (also known as sparse grid cloth), the bottom layer and the surface layer are wood pulp raw material paper, which is composited through a special process.

[0003] Wood pulp grid paper has a wide range of applications and usage scenarios. It can be used in mechanical processing, automobile manufacturing, electronic production, aviation and other industrial fields, and is often used in automobile maintenance and servicing, hospitals, laboratories and other places and the sanitation and cleaning of instruments and meters.

[0004] Wood pulp grid paper can form a specific wrinkle foaming effect through bidirectional shrinkage, enhance flexibility, comfort, high absorption and stretchability, and have the characteristics of high strength, strong absorption, safety and environmental protection, non-toxicity, and no linting. It can replace the rags currently used to maintain the safety of the production environment, products, and personnel. In addition, based on the good water absorption, chemical resistance, tensile strength, anti-static, not easy to break, no linting, and reusability of wood pulp grid paper, it is an important cleaning material for industrial applications, greatly improving cleaning efficiency and quality.

[0005] In the prior art, the preparation of wood pulp grid paper is made by a two-step forming process, which separates the preparation of the scrim and the compounding of the scrim with raw paper: the first step is to use a special scrim production line to make the scrim (or directly purchase the scrim), and the second step is to use a special compound production line to compound the scrim with raw paper. However, since there are few manufacturers in China that can produce high-quality scrim, in high-end application fields (such as medical paper for surgical operations), it is only possible to import scrim finished cloth that meets strict quality requirements from abroad at a high cost, resulting in a high production cost for high-end wood pulp grid paper. For this reason, our company has now specially developed a wood pulp grid paper production equipment that does not require the use of scrim finished cloth. The equipment adopts the online laying and forming technology of the loose grid material layer. The loose grid material layer is formed as the loose grid cloth by the online laying of the yarn weft and warp. The equipment also adopts the specially designed pressing and compounding roller to press and compound the upper and lower layers of raw paper and the loose grid material layer coated with glue in the middle layer. After drying, the wood pulp grid paper is formed.

[0006] The above-mentioned wood pulp grid paper production process involves a process of gluing the online laid loose grid cloth. In this gluing process, water-based glue needs to be applied to the online laid loose grid cloth, and then overlapped with the upper and lower layers of raw paper after gluing, and then made into wood pulp grid paper after pressing, compounding and drying.

[0007] However, due to the large spacing between the warp and weft of the sparse mesh cloth, and the poor moisture absorption performance of the material itself, if traditional gluing equipment is used for gluing, uneven excess glue will easily accumulate on the sparse mesh cloth, resulting in unstable film thickness control and uneven gluing, which in turn leads to the phenomenon of excessive thickness uniformity of the produced wood pulp mesh paper. Utility Model Content

[0008] In order to solve the above problems, the utility model proposes an improved structure of a scrim gluing device for a wood pulp grid paper production line, aiming to achieve stable control of the glue thickness of the scrim during online laying and improve the uniformity of the scrim gluing, thereby improving the production quality of wood pulp grid paper. The specific technical solution is as follows:

[0009] An improved structure of a loose mesh cloth gluing device for a wood pulp mesh paper production line includes a gluing roller, a glue pressing roller arranged above the gluing roller, a glue pool arranged below the gluing roller, a first transfer roller whose lower side of the roller surface is immersed in the glue pool, and a second transfer roller arranged between the gluing roller and the first transfer roller and in contact with the gluing roller and the first transfer roller respectively; wherein a cylindrical hygroscopic film is coated on the outer circumference of the gluing roller.

[0010] Preferably, the cylindrical moisture-absorbing film is a seamless cylindrical knitted fabric or a cylindrical non-woven fabric.

[0011] In the utility model, the glue coating roller is driven to rotate by the first servo variable frequency motor.

[0012] Preferably, the second transfer roller is a rigid roller, and the second transfer roller is driven to rotate by a second servo frequency conversion motor. A film thickness gauge for measuring the thickness of the film on the surface of the second transfer roller is arranged on one side of the second transfer roller, and the first servo frequency conversion motor, the second servo frequency conversion motor and the film thickness gauge are respectively connected to the control system of the wood pulp grid paper production line.

[0013] In the utility model, the rubber pressing roller is a rigid rubber pressing roller, the rubber coating roller is a composite rubber coating roller, the composite rubber coating roller comprises a rigid roller body and an elastic rubber layer arranged on the outer circle of the rigid roller body, and the cylindrical moisture absorbing film is sheathed on the outer circle of the elastic rubber layer.

[0014] In the utility model, a lifting mechanism is arranged above the rubber pressing roller, and the rubber pressing roller is arranged on the lifting mechanism so as to realize the up and down movement of the rubber pressing roller.

[0015] Preferably, the lifting mechanism is connected to a control system of a wood pulp grid paper production line.

[0016] The utility model discloses an improved structure of a sparse mesh cloth gluing device for a wood pulp mesh paper production line. The improved structure also includes a frame, the upper part of the lifting mechanism is fixed on the frame, and the gluing roller and the second transfer roller are rotatably arranged on the frame.

[0017] In the utility model, the first transfer roller is rotatably arranged on the glue coating pool.

[0018] Preferably, the first transfer roller is a brush roller.

[0019] Preferably, a feeding pipe is provided on the glue coating pool, and the feeding pipe is connected to a feeding pump.

[0020] When applying glue, the control system controls the glue pressing roller to move downward through the lifting mechanism to press the online paved loose mesh cloth against the glue coating roller, and then starts the first servo frequency conversion motor and the second servo frequency conversion motor to make the glue coating roller and the second transfer roller rotate respectively. When the glue coating roller rotates, it drives the online paved loose mesh cloth to move forward, and when the second transfer roller rotates, it drives the first transfer roller to rotate synchronously. When the first transfer roller rotates, it absorbs the aqueous liquid glue in the glue coating pool onto the outer circle of its own roller body, and then transfers the aqueous liquid glue to the outer circle of the second transfer roller through rotational contact with the second transfer roller. The second transfer roller then transfers the aqueous liquid glue on its outer circle to the glue coating roller. Under the counterpressure of the glue pressing roller and the glue coating roller, the glue is coated on the online paved loose mesh cloth; as the online paved loose mesh cloth moves forward, continuous coating of the glue on the loose mesh cloth is achieved.

[0021] In order to control the amount of glue applied, the control system dynamically monitors the thickness of the glue film on the second transfer roller through a glue film thickness gauge, controls the moving speed of the scrim through the first servo frequency conversion motor, and controls the rotation speed of the second transfer roller through the second servo frequency conversion motor, thereby achieving precise control of the amount of glue applied.

[0022] As a further improvement of the utility model, a liquid level monitor for monitoring the liquid level of the glue in the glue coating pool is also provided on the glue coating pool. The liquid level monitor includes a bridge plate arranged on one side of the upper end of the glue coating pool and a liquid level meter arranged on the bridge plate. The liquid level monitoring probe of the liquid level meter points downward to the glue coating pool. The liquid level meter is connected to the control system of the wood pulp grid paper production line.

[0023] As a further improvement, the utility model provides an improved structure of a loose mesh cloth gluing device for a wood pulp grid paper production line, which is also provided with a liquid level dynamic stabilizer for reducing the liquid level of the glue in the glue coating pool. The liquid level dynamic stabilizer includes a servo electric push rod fixed on the bridge plate, and a fully enclosed volume buoyancy box which is arranged at the lower end of the telescopic rod of the servo electric push rod and whose shape occupies a certain volume. The fully enclosed volume buoyancy box is partially immersed in the glue coating pool, and the servo electric push rod is connected to the control system of the wood pulp grid paper production line.

[0024] Preferably, the volume of the fully enclosed volume sinking and floating box is 1 / 10 to 1 / 5 of the volume of the glue in the glue coating pool.

[0025] The working principle of the above-mentioned liquid level dynamic stabilizer is: the control system monitors whether the liquid level of the glue in the glue coating pool fluctuates through the liquid level monitor. When the liquid level fluctuates and exceeds a predetermined threshold, the control system drives the telescopic rod of the servo electric push rod to move, so that the fully enclosed volume sinking and floating box rises or falls, thereby achieving the purpose of maintaining and stabilizing the liquid level in the glue coating pool. For example, when the liquid level of the glue in the glue coating pool is lower than the set value, the fully enclosed volume sinking and floating box moves down, so that the fully enclosed volume sinking and floating box occupies more of the space of the glue in the glue coating pool, thereby raising the liquid level of the glue in the glue coating pool to the set value; when the liquid level of the glue in the glue coating pool is higher than the set value, the fully enclosed volume sinking and floating box rises, so that the fully enclosed volume sinking and floating box occupies less of the space of the glue in the glue coating pool, thereby lowering the liquid level of the glue in the glue coating pool to the set value.

[0026] The beneficial effects of the utility model are:

[0027] First, the utility model provides an improved structure of a sparse mesh cloth gluing device of a wood pulp mesh paper production line. A specially designed gluing roller is coated with a layer of cylindrical moisture-absorbing film on its outer circumference, so that the gluing roller has better glue absorbing and releasing capabilities. Therefore, when the gluing of the sparse mesh cloth is uneven, the glue thickness of the thinner and thicker glue coatings at local points can be compensated, thereby improving the uniformity of the glue thickness on the sparse mesh cloth, which is conducive to achieving stable control of the glue thickness of the online laid sparse mesh cloth, thereby improving the production quality of wood pulp grid paper.

[0028] Second, the utility model has an improved structure of a sparse mesh cloth gluing device of a wood pulp mesh paper production line. Through a transfer roller and a matching glue film thickness gauge, the sparse mesh cloth gluing thickness can be precisely controlled, thereby further improving the sparse mesh cloth gluing uniformity and the production quality of wood pulp grid paper.

[0029] Third, the utility model discloses an improved structure of a sparse mesh cloth gluing device for a wood pulp mesh paper production line, which is provided with a liquid level dynamic stabilizer, and can dynamically maintain the constant liquid level in the glue coating pool during the gluing process, thereby effectively reducing the fluctuation of the amount of glue on the roller surface caused by the change of liquid level when the first transfer roller rotates, thereby further improving the stability and reliability of the entire gluing system, thereby further improving the uniformity of the sparse mesh cloth gluing and the production quality of wood pulp grid paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The utility model is a structural schematic diagram of an improved structure of a sparse mesh cloth gluing device of a wood pulp mesh paper production line.

[0031] In the figure: 1. Glue coating roller, 2. Glue pressing roller, 3. Glue coating pool, 4. First transfer roller, 5. Second transfer roller, 6. Cylindrical hygroscopic film, 7. First servo frequency conversion motor, 8. Second servo frequency conversion motor, 9. Film thickness gauge, 10. Control system, 11. Rigid roller body, 12. Elastic rubber layer, 13. Lifting mechanism, 14. Frame, 15. Feeding pipe, 16. Online loose mesh cloth, 17. Liquid level monitor, 18. Bridge plate, 19. Liquid level meter, 20. Liquid level dynamic stabilizer, 21. Servo electric push rod, 22. Fully enclosed volume sinking and floating box. DETAILED DESCRIPTION

[0032] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0033] like Figure 1 The figure shows an embodiment of the improved structure of the loose mesh cloth gluing device of a wood pulp mesh paper production line of the utility model, comprising a gluing roller 1, a glue pressing roller 2 arranged above the gluing roller 1, a glue pool 3 arranged below the gluing roller 1, a first transfer roller 4 with the lower side of the roller surface immersed in the glue pool 3, and a second transfer roller 5 arranged between the gluing roller 1 and the first transfer roller 4 and in contact with the gluing roller 1 and the first transfer roller 4 respectively; wherein, a cylindrical moisture-absorbing film 6 is coated on the outer circle of the gluing roller 1.

[0034] Preferably, the cylindrical moisture-absorbing film 6 is a seamless cylindrical knitted fabric or a cylindrical non-woven fabric.

[0035] In this embodiment, the glue coating roller 1 is driven to rotate by a first servo variable frequency motor 7 .

[0036] Preferably, the second transfer roller 5 is a rigid roller, and the second transfer roller 5 is driven to rotate by a second servo frequency conversion motor 8. A film thickness gauge 9 for measuring the thickness of the film on the surface of the second transfer roller 5 is provided on one side of the second transfer roller 5. The first servo frequency conversion motor 7, the second servo frequency conversion motor 8 and the film thickness gauge 9 are respectively connected to the control system 10 of the wood pulp grid paper production line.

[0037] In this embodiment, the rubber pressing roller 2 is a rigid rubber pressing roller, the rubber coating roller 1 is a composite rubber coating roller, the composite rubber coating roller includes a rigid roller body 11 and an elastic rubber layer 12 arranged on the outer circle of the rigid roller body 11, and the cylindrical hygroscopic film 6 is covered on the outer circle of the elastic rubber layer 12.

[0038] In this embodiment, a lifting mechanism 13 is disposed above the rubber pressing roller 2 , and the rubber pressing roller 2 is disposed on the lifting mechanism 13 so as to achieve the up and down movement of the rubber pressing roller 2 .

[0039] Preferably, the lifting mechanism 13 is connected to the control system 10 of the wood pulp grid paper production line.

[0040] The improved structure of the loose mesh cloth gluing device of a wood pulp mesh paper production line of this embodiment is also provided with a frame 14, the upper part of the lifting mechanism 13 is fixed on the frame 14, and the gluing roller 1 and the second transfer roller 5 are rotatably arranged on the frame 14 respectively.

[0041] In this embodiment, the first transfer roller 4 is rotatably disposed on the glue coating pool 3 .

[0042] Preferably, the first transfer roller 4 is a brush roller.

[0043] Preferably, a feeding pipe 15 is provided on the glue coating pool 3, and the feeding pipe 15 is connected to a feeding pump (not shown in the figure).

[0044] When applying glue, the control system 10 controls the glue pressing roller 2 to move downward through the lifting mechanism 13 to press the online paved loose mesh cloth 16 against the glue coating roller 1, and then starts the first servo frequency conversion motor 7 and the second servo frequency conversion motor 8, so that the glue coating roller 1 and the second transfer roller 5 rotate respectively. When the glue coating roller 1 rotates, it drives the online paved loose mesh cloth 16 to move forward, and when the second transfer roller 5 rotates, it drives the first transfer roller 4 to rotate synchronously. When the first transfer roller 4 rotates, it adsorbs the aqueous liquid glue in the glue coating pool 3 onto the outer circle of its own roller body, and then transfers the aqueous liquid glue to the outer circle of the second transfer roller 5 through rotational contact with the second transfer roller 5. The second transfer roller 5 then transfers the aqueous liquid glue on its outer circle to the glue coating roller 1. Under the counterpressure of the glue pressing roller 2 and the glue coating roller 1, the glue is coated on the online paved loose mesh cloth 16; as the online paved loose mesh cloth 16 moves forward, continuous coating of the glue on the paved loose mesh cloth is achieved.

[0045] In order to control the amount of glue applied, the control system 10 dynamically monitors the thickness of the glue film on the second transfer roller 5 through the glue film thickness gauge 9, and controls the moving speed of the loose mesh cloth through the first servo frequency conversion motor 7 and the rotation speed of the second transfer roller 5 through the second servo frequency conversion motor 8, so as to achieve precise control of the amount of glue applied.

[0046] As a further improvement of this embodiment, the glue coating pool 3 is also provided with a liquid level monitor 17 for monitoring the liquid level of the glue in the glue coating pool 3. The liquid level monitor 17 includes a bridge plate 18 arranged on one side of the upper end of the glue coating pool 3 and a liquid level meter 19 arranged on the bridge plate 18. The liquid level monitoring probe of the liquid level meter 19 points downward to the glue coating pool 3. The liquid level meter 19 is connected to the control system 10 of the wood pulp grid paper production line.

[0047] As a further improvement, the improved structure of the loose mesh cloth gluing device of a wood pulp grid paper production line of the present embodiment is also provided with a liquid level dynamic stabilizer 20 for reducing the liquid level of the glue in the glue coating pool 3. The liquid level dynamic stabilizer 20 includes a servo electric push rod 21 fixed on the bridge plate 19, and a fully enclosed volume buoyancy box 22 which is arranged at the lower end of the telescopic rod of the servo electric push rod 21 and whose shape occupies a certain volume. The fully enclosed volume buoyancy box 22 is partially immersed in the glue coating pool 3, and the servo electric push rod 21 is connected to the control system 10 of the wood pulp grid paper production line.

[0048] Preferably, the volume of the fully enclosed volume sinking and floating box 22 is 1 / 10 to 1 / 5 of the volume of the glue liquid in the glue coating pool 3 .

[0049] The working principle of the above-mentioned liquid level dynamic stabilizer 20 is: the control system 10 monitors whether the liquid level of the glue liquid in the glue pool 3 fluctuates through the liquid level monitor 17. When the liquid level fluctuates and exceeds a predetermined threshold, the control system drives the telescopic rod of the servo electric push rod 21 to move, so that the fully enclosed volume sinking and floating box 22 rises or falls, thereby achieving the purpose of maintaining and stabilizing the liquid level in the glue pool 3. For example, when the liquid level of the glue liquid in the glue pool 3 is lower than the set value, the fully enclosed volume sinking and floating box 22 moves down, so that the fully enclosed volume sinking and floating box 22 occupies more of the space of the glue liquid in the glue pool 3, so that the liquid level of the glue liquid in the glue pool 3 rises to the set value; when the liquid level of the glue liquid in the glue pool 3 is higher than the set value, the fully enclosed volume sinking and floating box 22 rises, so that the fully enclosed volume sinking and floating box 22 occupies less of the space of the glue liquid in the glue pool 3, so that the liquid level of the glue liquid in the glue pool 3 drops to the set value.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An improved structure of a scrim gluing device for a wood pulp grid paper production line, characterized in that: It includes a glue coating roller, a glue pressing roller arranged above the glue coating roller, a glue coating pool arranged below the glue coating roller, a first transfer roller with the lower side of the roller surface immersed in the glue coating pool, and a second transfer roller arranged between the glue coating roller and the first transfer roller and in contact with the glue coating roller and the first transfer roller respectively; wherein a cylindrical hygroscopic film is coated on the outer circle of the glue coating roller.

2. The improved structure of the loose mesh gluing device of the wood pulp mesh paper production line according to claim 1 is characterized in that: The cylindrical moisture-absorbing film is a seamless cylindrical knitted fabric or a cylindrical non-woven fabric.

3. The improved structure of the scrim gluing device of the wood pulp grid paper production line according to claim 1 is characterized in that: The glue coating roller is driven to rotate by a first servo variable frequency motor.

4. The improved structure of the loose mesh gluing device of the wood pulp mesh paper production line according to claim 3 is characterized in that: The second transfer roller is a rigid roller, and the second transfer roller is driven to rotate by a second servo frequency conversion motor. A film thickness gauge for measuring the thickness of the film on the surface of the second transfer roller is arranged on one side of the second transfer roller. The first servo frequency conversion motor, the second servo frequency conversion motor and the film thickness gauge are respectively connected to the control system of the wood pulp grid paper production line.

5. The improved structure of the scrim gluing device for a wood pulp grid paper production line according to claim 1 is characterized in that: The rubber pressing roller is a rigid rubber pressing roller, the rubber coating roller is a composite rubber coating roller, the composite rubber coating roller comprises a rigid roller body and an elastic rubber layer arranged on the outer circle of the rigid roller body, and the cylindrical moisture absorbing film is sheathed on the outer circle of the elastic rubber layer.

6. The improved structure of the scrim gluing device of the wood pulp grid paper production line according to claim 1 is characterized in that: A lifting mechanism is arranged above the rubber pressing roller, and the rubber pressing roller is arranged on the lifting mechanism so as to realize the up and down movement of the rubber pressing roller.

7. The improved structure of the scrim gluing device for a wood pulp grid paper production line according to claim 6 is characterized in that: A frame is also provided, the upper part of the lifting mechanism is fixed on the frame, and the glue coating roller and the second transfer roller are rotatably arranged on the frame respectively.

8. The improved structure of the scrim gluing device for a wood pulp grid paper production line according to claim 1 is characterized in that: The first transfer roller is rotatably arranged on the glue coating pool.

9. The improved structure of the scrim gluing device for a wood pulp grid paper production line according to claim 1 is characterized in that: The glue coating pool is also provided with a liquid level monitor for monitoring the liquid level of the glue in the glue coating pool. The liquid level monitor includes a bridge plate arranged on one side of the upper end of the glue coating pool and a liquid level meter arranged on the bridge plate. The liquid level monitoring probe of the liquid level meter points downward to the glue coating pool. The liquid level meter is connected to the control system of the wood pulp grid paper production line.

10. The improved structure of the scrim gluing device for a wood pulp grid paper production line according to claim 9, characterized in that: A liquid level dynamic stabilizer is also provided for reducing the liquid level of the glue in the glue coating pool. The liquid level dynamic stabilizer includes a servo electric push rod fixed on the bridge plate, and a fully enclosed volume buoyancy box arranged at the lower end of the telescopic rod of the servo electric push rod and whose shape occupies a certain volume. The fully enclosed volume buoyancy box is partially immersed in the glue coating pool, and the servo electric push rod is connected to the control system of the wood pulp grid paper production line.

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