Paperboard one-way chain wheel mute transmission device

Abstract

The utility model discloses a paperboard one-way chain wheel mute transmission device which comprises a traction machine and a paper guiding mechanism, the traction machine comprises a traction frame, a traction upper roller, a traction lower roller and a traction motor, the traction upper roller and the traction lower roller are arranged in the traction frame, the traction lower roller is driven by the traction motor, and the traction motor is driven by the traction motor. The paper guiding mechanism comprises a paper guiding frame, a paper guiding motor and paper guiding roller sets, the paper guiding frame is installed close to the traction machine, a plurality of parallel paper guiding roller sets are evenly distributed on the paper guiding frame, the upper portion of the paper guiding frame is divided into a cooling area and a drying area, a cooling device is arranged in the cooling area, and a drying device is arranged in the drying area. The traction machine and the paper guiding mechanism are matched with each other, in the starting stage, the paper guiding motor provides power for low-speed driving, low-speed running noise is low, and therefore the basically mute state is achieved, when a paperboard is guided to the traction upper roller and the traction lower roller, the paper guiding motor is closed, chain noise is avoided, and abrasion of a chain and a chain wheel is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to paperboard conveying field, especially a kind of paperboard unidirectional sprocket silent transmission device. BACKGROUND

[0002] Traditional paperboard drying frame cooling frame, by the drag chain wheel on the traction steel roller drag chain drive cooling frame and drying frame lower paper roller, upper paper roller and linkage chain group, dozens to hundreds of sprocket and chain are always running at high speed, they have the following shortcomings:

[0003] 1) mechanical principle informs, the transmission of sprocket and chain is nonlinear transmission ratio, especially in the case of less teeth (less 10~17 teeth, usually designed as 13~15 teeth due to cost consideration) Noise is serious, so dense sprocket and chain transmission brings serious noise to production workshop environment;

[0004] 2) in the dusty environment of paper production, the transmission of exposed sprocket and chain lacks lubrication and protection, which can aggravate the wear of sprocket and chain transmission mechanism and become loose, and the transmission system can also produce low-speed crawling, the lower paper roller and the upper paper roller of the whole line can be fast or slow, and the front and back are not the same, which further affects the quality of paperboard products, and the tensioning wheel needs to be adjusted frequently to control. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to provide a paperboard unidirectional sprocket silent transmission device, which does not emit chain noise, so that the noisy working environment is greatly improved, and the wear of chain sprocket is greatly reduced, and the maintenance and lubrication and maintenance work are reduced.

[0006] In order to solve the above technical problems, the technical scheme of the utility model is a paperboard unidirectional sprocket silent transmission device, which comprises a traction machine and a paper guiding mechanism, the traction machine comprises a traction frame, a traction upper roller, a traction lower roller and a traction motor, the traction frame is internally provided with the traction upper roller and the traction lower roller from top to bottom, the traction lower roller is driven by the traction motor installed on the outer side of the traction frame, the paper guiding mechanism comprises a paper guiding frame, a paper guiding motor, a paper guiding roller group, the paper guiding frame is installed close to the traction machine, a plurality of parallel paper guiding roller groups are evenly distributed on the paper guiding frame, each paper guiding roller group comprises an upper paper roller and a lower paper roller installed on the paper guiding frame through a bearing, the lower paper roller protrudes from the paper guiding frame and is provided with double-row sprockets, adjacent paper guiding roller groups are connected through chain transmission, the paper guiding roller group close to the traction machine is driven by the paper guiding motor arranged on the outer side of the paper guiding frame, and the position close to the traction frame is taken as the starting point, the upper part of the paper guiding frame is divided into a cooling area and a drying area, a cooling device is arranged in the cooling area, and a drying device is arranged in the drying area.

[0007] In a further improvement, the lower pressure roller is mounted on the side of the paper feeder via a one-way bearing.

[0008] In a further improvement, the double-row sprocket of the lower pressure roller is a unidirectional double-row sprocket.

[0009] In a further improvement, the traction frame has a slotted side, and the upper traction roller is mounted on the traction frame via an adjustment device. The adjustment device includes a cylinder and a moving plate. The upper traction roller is mounted on the moving plate via a bearing. The moving plate has grooves on both sides, which are nested with the traction frame. The cylinder is mounted on the top of the traction frame, and the cylinder's telescopic shaft is fixedly connected to the top of the moving plate.

[0010] In a further improvement, multiple cooling devices are evenly distributed within the cooling area, and the cooling devices are fans. In an even further improvement, the fans are mounted above the paper feeder via a mounting bracket, and a protective sleeve is provided around the fans.

[0011] In a further improvement, multiple drying devices are evenly distributed within the drying area, and each drying device is an electric heating device equipped with a heating wire.

[0012] As a further improvement, a baffle is provided above the electric heating device.

[0013] As a further improvement, a support roller is also provided at the rear end of the traction roller.

[0014] This invention utilizes the cooperation between the traction machine and the paper feeding mechanism. In the initial startup phase, the cardboard, driven by the paper feeding motor, passes through the drying and cooling zones and reaches the traction machine. At this time, the paper feeding motor provides power for low-speed drive, resulting in low noise and achieving a near-quiet operation. When the cardboard is introduced into the upper and lower traction rollers, the two rollers drive the cardboard, which in turn drives the paper feeding roller group. At this point, the paper feeding motor is turned off and does not need to run. That is, the paper feeding roller groups do not need to be driven by the paper feeding motor, and the chains between the various paper feeding roller groups stop running, thereby avoiding chain noise. The noisy working environment is greatly improved, and chain and sprocket wear is significantly reduced, as well as maintenance, lubrication, and repair work. Attached Figure Description

[0015] Figure 1 This is a perspective view of a cardboard one-way sprocket silent transmission device in the embodiment;

[0016] Figure 2 This is a schematic diagram of the installation of the upper and lower pressure rollers in an embodiment.

[0017] Figure 3 This is a schematic diagram of the transmission of the upper and lower pressure rollers in an embodiment;

[0018] Figure 4 This is a diagram showing the installation position of the support roller in the embodiment.

[0019] In the diagram, 1-traction machine, 11-traction frame, 12-upper traction roller, 13-lower traction roller, 14-traction motor, 15-adjusting device, 151-cylinder, 152-moving plate, 16-support roller, 2-paper feeding mechanism, 21-paper feeding frame, 22-paper feeding motor, 23-paper feeding roller group, 231-upper pressure roller, 232-lower pressure roller, 24-double row sprocket, 3-cooling device, 31-mounting frame, 32-protective sleeve, 4-baffle, 5-cardboard. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0021] like Figures 1-4 As shown, a cardboard one-way sprocket silent transmission device includes a traction machine 1 and a paper feeding mechanism 2. The traction machine 1 includes a traction frame 11, an upper traction roller 12, a lower traction roller 13, and a traction motor 14. The upper traction roller 12 and the lower traction roller 13 are arranged sequentially from top to bottom inside the traction frame 11. The end of the lower traction roller 13 is connected to the motor shaft of the traction motor 14, and the lower traction roller 13 can be driven by the traction motor 14. The upper traction roller 12 is rotatably mounted on the traction frame 11.

[0022] To further address the height adjustment issue of the upper traction roller 12, the upper traction roller 12 is mounted on the traction frame 11 via an adjustment device 15. The adjustment device 15 includes a cylinder 151 and a movable plate 152. The upper traction roller 12 is mounted on the movable plate 152 via bearings. The movable plate 152 has grooves on both sides, which nest with the traction frame 11. The cylinder 151 is mounted on the top of the traction frame 11, and its telescopic shaft is fixedly connected to the top of the movable plate 152. The height of the upper traction roller 12 can be adjusted at any time via the adjustment device 15, allowing the traction machine 1 to adjust the traction force according to the thickness of the cardboard.

[0023] The paper leading mechanism 2 comprises a paper leading frame 21, a paper leading motor 22 and a paper leading roller set 23, the paper leading frame 21 is installed close to the traction machine 1, a plurality of parallel paper leading roller sets 23 are evenly distributed on the paper leading frame 21, each paper leading roller set 23 comprises an upper paper pressing roller 231 and a lower paper pressing roller 232 which are installed on the paper leading frame 21 through bearings, the lower paper pressing roller 232 protrudes from the paper leading frame 21 and is provided with a double-row sprocket 24, adjacent paper leading roller sets 23 are connected through a chain transmission, and the chain between adjacent two lower paper pressing rollers 232 is arranged on the same outer side gear or the same inner side gear, so that the problem of unsmooth transmission caused by the linkage of the outer side gear of the first lower paper pressing roller 232 and the inner side gear of the second lower paper pressing roller 232 is avoided. The paper leading roller set 23 close to the traction machine 1 is driven by the paper leading motor 22 arranged on the outer side of the paper leading frame 21, and the position close to the traction frame 11 is taken as the starting point, the upper side of the paper leading frame 21 is divided into a cooling area and a drying area, the cooling device 3 is arranged in the cooling area, and the drying device is arranged in the drying area.

[0024] In order to realize the purpose of transmission silence of the application, the bearing of the lower paper pressing roller 232 during installation and the double-row gear at the end thereof can be further arranged as one-way transmission, that is, the double-row sprocket 24 of the lower paper pressing roller 232 is a one-way double-row sprocket 24, and the bearing of the lower paper pressing roller 232 during installation is a one-way bearing, so that the noise caused by the back-and-forth transmission can be further avoided.

[0025] The specific implementation device of the cooling area and the drying area of the application has no special requirements, as long as it can achieve the purpose of cooling and drying, and since the application is used for the transmission of paper board, the implementation device of the cooling area cannot bring moisture, and the implementation device of the drying area cannot use open fire or other devices that can easily cause the burning of paper board, as long as the device can achieve the above purpose, it can be used on the transmission device of the application.

[0026] In the embodiment, the cooling device 3 of the cooling area is a fan, a plurality of fans are sequentially arranged on the cooling area, and in order to ensure that the wind of the fan only acts on the paper board 5, a protective sleeve 32 can be arranged on the periphery of the fan, which can avoid the occurrence of safety accidents on the one hand, and can also make the action of the cooling wind relatively concentrated on the other hand. As for how to install the fan, the application also has no specific requirements, which can be installed on the paper leading frame 21 through the mounting frame 31 as in the embodiment, the mounting frame 31 is a certain distance away from the surface of the paper leading roller set 23, and the mounting frame 31 can be arranged as a structure with a plurality of square frames, and the surface of each square frame can freely install the protective sleeve 32 of the fan.

[0027] In the embodiment, the drying device is an electric heating device, the electric heating device is provided with electric heating wires, a plurality of electric heating devices can be uniformly distributed in the drying area, the electric heating device can also be installed by using the mounting frame 31 similar to the cooling device 3, and the electric heating device also needs to be at a distance from the upper surface of the conveyed paperboard to avoid high temperature. Meanwhile, since the electric heating device has high temperature during use, the baffle 4 is arranged above the electric heating device to avoid safety accidents, and the hot air can also be gathered to avoid rapid dissipation of the hot air, thereby enhancing the drying efficiency.

[0028] In order to make the paperboard more flat after being pulled out by the traction upper roller 12 and the traction lower roller 13, a supporting roller can be arranged at the rear end of the traction upper roller 12 and the traction lower roller 13 to further ensure flat output.

[0029] The process of the mute transmission of the application is as follows:

[0030] Firstly, in the equipment preparation state, the paperboard has not yet penetrated the whole production line, the lower paper pressing roller 232 of the cooling area and the drying area needs to be driven at low speed by the chain and the paper leading motor 22 (the noise of low-speed operation is also small), the paperboard is sequentially introduced into the drying area, the cooling area and reaches the entrance of the traction machine 1 from the front end, when the paperboard contacts the traction upper roller 12 and the traction lower roller 13, the mute mode can be entered, at this time, the paper leading motor 22 can be closed, and under the action of the one-way bearing, the lower paper pressing roller 232 and the upper paper pressing roller 231 rotate with the paperboard, at this time, by closing the paper leading motor 22, the noise of the chain transmission is avoided, thereby achieving the purpose of mute compared with the traditional equipment.

[0031] When the paperboard enters the traction upper roller 12 and the traction lower roller 13, the equipment enters the normal working state, under the continuous main driving action of the traction upper roller 12 and the traction lower roller 13, the paperboard continuously drives the lower paper pressing roller 232 and the upper paper pressing roller 231 of the cooling area and the drying area by friction, thereby ensuring that the lower paper pressing roller 232 and the upper paper pressing roller 231 do not need to be synchronously transmitted by the chain even if the paper leading motor 22 is closed, on the one hand, the noise of the chain transmission is reduced, the noisy working environment is greatly improved, and since the chain stops transmission, the wear of the chain sprocket is greatly reduced, and the maintenance and lubrication and maintenance work are reduced.

[0032] The feasibility principle of the application is as follows:

[0033] Let:

[0034] The rotation speed of the first lower paper pressing roller 232 driven by the paper leading motor 22 is Rd;

[0035] The rotation speed of the lower paper pressing roller 232 is Rp;

[0036] The linear speed of the paperboard is Vp;

[0037] Because the paper roller 232 is driven by friction force, Vp=K(πd)• Rp, Vp is proportional to Rp.

[0038] When Rp<Rd (the paper motor 22 is started), the inner and outer rings of the one-way bearing are locked, forcing Rp= Rd, and the paperboard is driven by the paper motor 22 at low speed.

[0039] When Rp (the main traction of the traction machine 1) > Rd (the paper motor 22 is started), the inner and outer rings of the one-way bearing are free and unconstrained, keeping Rp > Rd, and the paperboard is driven by the main traction of the traction machine 1, and the paper motor 22 is invalid at low speed and can be turned off.

[0040] The paper motor is turned off, and then Rp > Rd (Rd=0), the inner and outer rings of the one-way bearing are always free and unconstrained.

[0041] The device is in normal working state, and the sprocket and chain enter the silent mode.

[0042] The embodiments of the utility model are described in detail in combination with the drawings, but the utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and still fall within the protection scope of the utility model.

Claims

1. A silent one-way sprocket transmission device for cardboard, characterized in that: The system includes a traction machine and a paper feeding mechanism. The traction machine includes a traction frame, an upper traction roller, a lower traction roller, and a traction motor. The upper traction roller and the lower traction roller are arranged sequentially from top to bottom inside the traction frame. The lower traction roller is driven by a traction motor installed on the outside of the traction frame. The paper feeding mechanism includes a paper feeding frame, a paper feeding motor, and a paper feeding roller assembly. The paper feeding frame is installed close to the traction machine. Multiple parallel paper feeding roller assemblies are evenly distributed on the paper feeding frame. Each paper feeding roller assembly includes an upper pressure roller and a lower pressure roller mounted on the paper feeding frame via bearings. The end of the lower pressure roller protrudes from the paper feeding frame and is equipped with a double-row sprocket. Adjacent paper feeding roller assemblies are connected by chain drive. The paper feeding roller assembly closest to the traction machine is driven by a paper feeding motor located on the outside of the paper feeding frame. Starting from the position closest to the traction frame, the area above the paper feeding frame is divided into a cooling area and a drying area. A cooling device is installed in the cooling area, and a drying device is installed in the drying area.

2. The silent transmission device for a cardboard unidirectional sprocket according to claim 1, characterized in that: The lower pressure roller is mounted on the side of the paper feeder via a one-way bearing.

3. The silent transmission device for a cardboard unidirectional sprocket according to claim 1, characterized in that: The double-row sprockets of the lower pressure roller are unidirectional double-row sprockets.

4. The silent transmission device for a cardboard unidirectional sprocket according to claim 1, characterized in that: The traction frame has a slotted side. The upper traction roller is mounted on the traction frame via an adjustment device. The adjustment device includes a cylinder and a moving plate. The upper traction roller is mounted on the moving plate via bearings. The moving plate has grooves on both sides, which are nested with the traction frame. The cylinder is mounted on the top of the traction frame, and the cylinder's telescopic shaft is fixedly connected to the top of the moving plate.

5. The silent transmission device for a cardboard unidirectional sprocket according to claim 1, characterized in that: Multiple cooling devices, which are fans, are evenly distributed within the cooling area.

6. The silent transmission device for a cardboard unidirectional sprocket according to claim 5, characterized in that: The fan is mounted on top of the paper feeder via a mounting bracket, and a protective sleeve is provided around the fan.

7. The silent transmission device for a cardboard unidirectional sprocket according to claim 1, characterized in that: Multiple drying devices are evenly distributed within the drying area. Each drying device is an electric heating device, and each electric heating device is equipped with a heating wire.

8. The silent transmission device for a cardboard unidirectional sprocket according to claim 7, characterized in that: A baffle is provided above the electric heating device.

9. A silent transmission device for a cardboard unidirectional sprocket according to claim 1, characterized in that: A support roller is also provided at the rear end of the traction roller.

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