A paper pad filling machine

Abstract

This utility model discloses a paper pad filling machine, including an inlet, an outlet, a flow channel, a cutting mechanism, and a paper feeding assembly. One end of the flow channel is connected to the inlet, and the other end is connected to the outlet. The cutting mechanism is located between the other end of the flow channel and the outlet. The paper feeding assembly includes a driving wheel, a driven wheel, a driving component, and a pressing mechanism. Both the driving wheel and the driven wheel extend into the flow channel. The driving component drives the driving wheel to rotate, and the pressing mechanism drives the driven wheel to press against the driving wheel. Because the pressing mechanism of this utility model drives the driven wheel to press against the driving wheel, the driven wheel and the driving wheel are tightly fitted together, generating a stable pressing force. The squeezing force between the driving wheel and the driven wheel makes the paper pad forming more firmly and less prone to loosening. It also ensures that the paper pad, whose thickness varies randomly after forming, will not slip or jam when passing between the driving wheel and the driven wheel. Furthermore, it enables self-compensation for wear on the wheel surfaces of the driving wheel and the driven wheel after long-term operation.

Description

Technical Field

[0001] This utility model relates to a paper filling machine. Background Technology

[0002] A paper padding machine is a packaging equipment used to process paper into paper pads to fill the packaging boxes, which play a role in cushioning and shock absorption, and protect the products from damage during transportation.

[0003] Traditional paper pad filling machines rely on a pair of rubber rollers rotating in opposite directions to rub against the paper feed. After long-term use, the surface of the rubber rollers will wear down, reducing friction and causing slippage. This makes it impossible to feed the paper pads stably, affecting the continuous forming quality of the paper pads. Moreover, after the rubber rollers wear down, the paper pads may experience feeding difficulties, paper jams, or misalignment, resulting in loose paper pads, uneven thickness, or even machine shutdown, leading to reduced packaging efficiency in subsequent packaging processes.

[0004] Traditional paper filling machines have a complex internal layout, with the rubber roller assembly and flow channel components arranged in a multi-layered stacked layout, resulting in a large overall size. Disassembly and assembly require the sequential removal of multiple components, leading to time-consuming and labor-intensive maintenance, increasing labor costs. Moreover, after long-term use, paper scraps tend to accumulate in the gaps between the rubber rollers, transmission gears, and other parts. Long-term accumulation can lead to increased transmission resistance, increased noise, and even mechanical jamming.

[0005] Traditional paper pad filling machines lack a real-time detection mechanism for rubber wheel slippage. Operators can only judge whether the rubber wheel has failed by observing abnormal paper pad forming, which leads to delayed problem detection, affects production efficiency, and lacks early warning function. Sudden failure of the rubber wheel may cause a batch of scrap.

[0006] Traditional paper pad filling machines either lack sensors at the paper pad outlet or use only a single sensor, making it impossible to accurately detect whether the paper pads are being output normally. This can lead to situations where the rubber rollers spin idly or paper breaks go undetected, causing packaging interruptions in subsequent packaging processes. Furthermore, it results in frequent manual intervention, increasing operational complexity and contradicting the trend towards automation.

[0007] Therefore, overcoming the aforementioned technical deficiencies is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0008] The purpose of this invention is to provide a paper filling machine to solve at least one of the above-mentioned technical problems.

[0009] According to one aspect of the present invention, a paper pad filling machine is provided, comprising:

[0010] The feed inlet has a gradually decreasing longitudinal cross-sectional area;

[0011] Discharge port;

[0012] The flow channel is connected at one end to the feed inlet and at the other end to the discharge outlet.

[0013] The cutting mechanism is located between the other end of the flow channel and the outlet; and

[0014] The paper feeding assembly includes a drive wheel, a driven wheel, a drive component, and a clamping mechanism. Both the drive wheel and the driven wheel extend into the flow channel. The drive component drives the drive wheel to rotate, and the clamping mechanism can drive the driven wheel to press against the drive wheel. The drive wheel drives the driven wheel to rotate, thereby driving the paper pad in the flow channel to be conveyed towards the discharge port.

[0015] This invention relates to a paper pad filling machine. Raw paper enters through the feed inlet. Because the feed inlet has a gradually decreasing cross-sectional area, the paper is squeezed and compressed at the inlet, forming a paper pad that enters the flow channel. Under the action of the driving component, the driving and driven wheels of the paper feeding assembly grip the paper pad and convey it towards the discharge outlet. The driving and driven wheels continuously convey the formed paper pads towards the discharge outlet. The cutting mechanism cuts the conveyed paper pads to a set length. The pressing mechanism drives the driven wheel to press against the driving wheel. The upper part of the clamping mechanism ensures that the driven wheel and the driving wheel fit tightly together, generating a stable clamping force. The squeezing force between the driving wheel and the driven wheel makes the paper pad more firmly formed and less prone to loosening, ensuring the continuous forming quality of the paper pad. It also ensures that the paper pad with randomly varying thickness after forming will not slip or jam when passing between the driving wheel and the driven wheel, thus solving the problems of paper pad slippage and paper jam. The clamping mechanism can also achieve self-compensation for the wear of the wheel surfaces after long-term operation of the driving wheel and the driven wheel, preventing gaps from forming between the driving wheel and the driven wheel that would cause slippage during paper feeding.

[0016] In some embodiments, the clamping mechanism may include a swing frame and a tension spring, with the driven wheel hinged to the swing frame, one end of the tension spring disposed on the swing frame, and the other end of the tension spring fixed, the tension spring driving the swing frame to swing so that the driven wheel presses against the driving wheel.

[0017] Therefore, the spring can tighten the swing frame, making the driven wheel on the swing frame fit tightly with the driving wheel, generating a stable clamping force. When the paper is feeding, the swing frame can swing slightly, ensuring that the paper pad with randomly varying thickness after forming will not slip or jam when passing between the driving wheel and the driven wheel. Using the spring to tighten the driven wheel can achieve self-compensation for the wear of the wheel surface after the driving wheel and the driven wheel have been running for a long time, and will not allow gaps to form between the driving wheel and the driven wheel, which would cause slippage when feeding paper. The design of tightening the driven wheel with the spring and swinging slightly can solve the problems of paper pad slippage and paper jam, and at the same time achieve self-compensation for the wear of the wheel surface of the driving wheel and the driven wheel.

[0018] In some embodiments, a base may also be included. The swing frame includes a mounting column, an upper mounting plate, a lower mounting plate, and a rotating shaft. The end of the mounting column is located on the base. One end of the upper mounting plate and one end of the lower mounting plate are both located on the mounting column and can rotate on the mounting column. The driven wheel is sleeved on the rotating shaft. The two ends of the rotating shaft are respectively hinged to the upper mounting plate and the lower mounting plate. One end of the tension spring is located on the upper mounting plate.

[0019] Therefore, under the tension of the tension spring, the upper mounting plate, lower mounting plate, and driven wheel as a whole can swing around the mounting column as the swing center, so that the driven wheel between the upper and lower mounting plates is tightly fitted with the driving wheel, generating a stable clamping force. When the paper is feeding, the driven wheel can swing slightly to ensure that the paper pad with randomly varying thickness after forming will not slip or jam when passing between the driving wheel and the driven wheel. When the paper is feeding between the driving wheel and the driven wheel, through the friction of the paper pad, the driving wheel can drive the driven wheel to rotate on the swing frame in the opposite direction to the rotation direction of the driving wheel, thereby driving the formed paper pad to be continuously conveyed to the discharge port.

[0020] In some embodiments, a detection device, a controller, and an alarm may also be included. The detection device is used to detect whether the rotation of the driven wheel is normal. The detection device is electrically connected to the controller, and the controller is electrically connected to the alarm.

[0021] Therefore, when paper jams occur in the flow channel, the rotation of the driven wheel will be abnormal, such as the driven wheel stopping or rotating very slowly. At this time, the detection device detects that the rotation of the driven wheel is abnormal and sends the detected signal to the controller. The controller then activates the alarm to notify the operator to deal with the paper jam situation as soon as possible, so as to avoid poor paper pad formation and affect the production efficiency of the paper pad filling machine. This also avoids batch scrap caused by the sudden failure of the driven wheel (the driven wheel stops rotating or rotates very slowly).

[0022] In some implementations, the detection device may be a proximity switch, with multiple evenly arranged detection pins on the end face of the driven wheel along its circumference.

[0023] When the driven wheel rotates normally, the detection column can trigger the proximity switch at time intervals T.

[0024] When paper jams occur in the flow channel, the detection column continuously triggers the proximity switch, fails to trigger the proximity switch, or triggers the proximity switch at time intervals greater than T.

[0025] Therefore, during normal paper feeding in the flow channel, multiple detection posts on the driven roller end face stably trigger proximity switches at time intervals T. That is, the proximity switches send a switching signal to the controller at stable intervals T. The controller determines that the driven roller is rotating normally. When a paper jam occurs in the flow channel, the driven roller's rotation becomes abnormal; it either stops rotating or rotates very slowly. At this time, the drive roller continues to rotate, and the paper pad is not being fed or is being fed very slowly. The driven roller is in a slipping state. When the driven roller stops rotating, the detection posts on the driven roller end face either continuously trigger the proximity switches or fail to trigger them. The proximity switch either continuously generates a switching signal or fails to generate a switching signal. If the proximity switch cannot send a switching signal to the controller at a stable interval T, the controller determines that the driven wheel is rotating abnormally and activates the alarm to notify the operator to handle the paper jam immediately. When the driven wheel rotates very slowly, the detection post on the end face of the driven wheel triggers the proximity switch at an interval greater than T. The proximity switch then sends a switching signal to the controller at an interval greater than T. The controller determines that the driven wheel is rotating abnormally and activates the alarm to notify the operator to handle the paper jam immediately.

[0026] In some implementations, the drive component may be a motor, which is inserted into the drive wheel.

[0027] Therefore, since the drive component is inserted into the drive wheel, the paper feeding wheel surface of the drive wheel can be close to the middle of the motor, instead of being directly mounted on the motor shaft like the traditional cylindrical wheel. This reduces the overall height of the drive component and the drive wheel, thereby reducing the overall height of the machine. It also optimizes the internal structure layout of the filling paper pad machine to reduce the overall size and weight, greatly improving convenience and flexibility, and meeting various usage scenarios.

[0028] In some embodiments, a connecting bushing may also be included. An annular protrusion is provided on the end face of the drive wheel. A first flat portion is provided on the inner wall of the annular protrusion. A second flat portion is provided on the outer wall of the connecting bushing. The connecting bushing is sleeved on the drive shaft of the drive component and rotates synchronously with the drive shaft of the drive component. After passing through the drive wheel, the connecting bushing is inserted into the annular protrusion and the second flat portion abuts against the first flat portion.

[0029] Therefore, the drive shaft of the drive component can drive the connecting bushing to rotate synchronously. The connecting bushing can drive the drive wheel to rotate through the annular protrusion. The cooperation between the second flat part and the first flat part can ensure that the drive wheel and the connecting bushing rotate synchronously. The drive component can drive the drive wheel to rotate synchronously through the connecting bushing and realize that the drive component is inserted in the drive wheel. The paper feeding wheel surface of the drive wheel is close to the middle of the motor, which can reduce the overall height of the drive component and the drive wheel, eliminate the traditional transmission structure between the motor and the drive wheel, save the internal space of the machine, and optimize the internal structural layout of the filling paper pad machine to reduce the overall size of the machine.

[0030] In some embodiments, the device may also include a base and a bearing housing, with the end of the connecting bushing fixed in the inner ring of the bearing housing, and the bearing housing disposed on the base.

[0031] Therefore, the connecting bushing can rotate smoothly on the bearing seat, ensuring that the drive wheel can rotate smoothly, thereby smoothly conveying the paper pad towards the discharge port. The motor can be installed inside the filling paper pad machine through a fixed seat to ensure the overall stability of the drive components and the drive wheel.

[0032] In some embodiments, a first detection sensor and / or a second detection sensor may also be included, and a flip-up protective door is provided at the discharge port. The first detection sensor can detect whether the protective door is flipped open, and the second detection sensor can detect whether a paper pad is sent out from the discharge port.

[0033] Therefore, when the paper pad is fed out of the outlet, the flip-up protective door is lifted by the paper pad, and the first detection sensor detects that the protective door is open. At this time, the paper pad filling machine is in a normal output state. When the cutting mechanism of the paper pad filling machine cuts the paper pad, the paper pad is removed for use, the protective door falls, and the first detection sensor detects that the protective door is closed. At this time, the paper pad filling machine automatically stops to avoid the drive wheel running idle or paper breakage not being detected in time. Alternatively, when the paper pad is fed out of the outlet, the flip-up protective door is lifted by the paper pad, and the second detection sensor detects that paper pads are coming out. At this time, the paper pad filling machine is in a normal output state. When the cutting mechanism of the paper pad filling machine cuts the paper pad, the paper pad is removed for use, the protective door falls, and the second detection sensor detects that there are no paper pads left at the outlet. At this time, the paper pad filling machine automatically stops to avoid overflow. In cases where the active wheel is idle or paper breaks go undetected, or when the paper pad is fed from the outlet, the flip-up protective door is lifted by the paper pad. The first detection sensor detects that the protective door is open, and at the same time, the second detection sensor detects that a paper pad is coming out. At this time, the paper pad filling machine is in a normal output state. When the cutting mechanism of the paper pad filling machine cuts the paper pad, the paper pad is removed and used, the protective door falls, the first detection sensor detects that the protective door is closed, and the second detection sensor detects that there is no paper pad at the outlet. At this time, the paper pad filling machine automatically stops, avoiding situations where the active wheel is idle or paper breaks go undetected. The first and second detection sensors can jointly monitor the output status of the paper pad in real time to ensure the accuracy of monitoring. The automatic stop when the active wheel is idle or paper breaks reduces manual intervention and lowers the complexity of operation.

[0034] In some embodiments, the protective door may include a door body and a tilting shaft, with its two ends respectively inserted into two opposite side walls of the discharge port. The tilting shaft can rotate on the side walls of the discharge port. The top of the door body is located on the tilting shaft, and a detection plate is provided at the end of the tilting shaft.

[0035] The first detection sensor can be a proximity switch, and it is located on the side of the detection plate.

[0036] When the door closes, the detection element triggers the proximity switch.

[0037] The second detection sensor can be a through-beam photoelectric sensor, with the transmitter and receiver of the through-beam photoelectric sensor respectively located on two opposite side walls of the discharge port.

[0038] When the paper pad is fed out of the discharge port, the paper pad can trigger the through-beam photoelectric sensor.

[0039] Therefore, when the paper pad is fed out of the outlet, the door is lifted by the paper pad, and the door drives the rotating shaft to rotate. The rotating shaft drives the detection plate away from the proximity switch, and the proximity switch does not generate a switching signal. The through-beam photoelectric sensor detects that a paper pad has come out. At this time, the paper pad filling machine is in a normal output state. When the cutting mechanism of the paper pad filling machine cuts the paper pad, the paper pad is removed and used. The door falls down, and the door drives the rotating shaft to rotate. The rotating shaft drives the detection plate to approach the proximity switch. The detection plate triggers the proximity switch, and the proximity switch generates a switching signal. The through-beam photoelectric sensor detects that there is no paper pad at the outlet. At this time, the paper pad filling machine automatically stops to avoid the situation where the drive wheel spins idly or the paper breakage is not detected in time. The proximity switch and the through-beam photoelectric sensor can monitor the output status of the paper pad in real time and automatically stop when the drive wheel spins idly or the paper breaks. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the structure of a paper pad filling machine according to one embodiment of the present invention;

[0041] Figure 2 for Figure 1 The diagram shows a structural schematic of the filling paper pad machine from another perspective;

[0042] Figure 3 for Figure 1 The diagram shows a structural schematic from another perspective, behind the hidden portion of the housing of the filling paper pad machine.

[0043] Figure 4 for Figure 1 The diagram shows another view of the structure of the paper filling machine from behind the hidden part of the housing.

[0044] Figure 5 for Figure 4 The diagram shows the structure of the paper filling machine after concealing the flow channel, base, and housing.

[0045] Figure 6 for Figure 5 The diagram shows the structure of the drive unit, drive wheel, connecting bushing, and bearing housing in the filling paper pad machine.

[0046] Figure 7 for Figure 6 The diagram shows the disassembled structure of the drive component, drive wheel, connecting bushing, and bearing housing.

[0047] Figure 8 for Figure 4 The diagram shows the structure of the discharge port, flow channel, first detection sensor, and second detection sensor in the filling paper pad machine. Detailed Implementation

[0048] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0049] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0050] Figures 1 to 8 The diagram schematically illustrates the structure of a paper pad filling machine according to one embodiment of the present invention.

[0051] refer to Figures 1 to 8 A paper filling machine includes an inlet 1, an outlet 2, a flow channel 3, a cutting mechanism 200, and a paper feeding assembly. Additionally, the paper filling machine may also include a base 5, a detection device 6, a controller, an alarm, a connecting bushing 7, a bearing seat 8, a first detection sensor 9, a second detection sensor 10, and a housing 100.

[0052] refer to Figures 1 to 3 The feed inlet 1 is located at one end of the housing 100. The feed inlet 1 is a tapered shape with a gradually decreasing longitudinal cross-sectional area. The raw material paper enters the housing 100 through the feed inlet 1. The paper is squeezed and contracted at the feed inlet 1 and transformed into a paper pad before entering the flow channel 3 in the housing 100.

[0053] refer to Figure 2 The discharge port 2 is located at the other end of the housing 100. The inlet port 1 and the discharge port 2 are located at opposite ends of the housing 100. The paper pads made by the filling paper pad machine will be sent out from the discharge port 2.

[0054] refer to Figure 3 , Figure 4 and Figure 8 The flow channel 3 is installed in the housing 100. The flow channel 3 can be fixed on the base 5. The base 5 is fixed on the inner bottom of the housing 100. One end of the flow channel 3 is connected to the feed port 1, and the other end of the flow channel 3 is connected to the discharge port 2. The flow channel 3 can be in a waist-shaped form. The flow channel 3 can drive the paper entering from the feed port 1 to further shrink and form.

[0055] refer to Figures 3 to 5 , Figure 8 The cutting mechanism 200 is installed in the housing 100. The cutting mechanism 200 is located between the flow channel 3 and the discharge port 2. The cutting mechanism 200 can cut the paper pads conveyed by the flow channel 3 into a set length. The cut paper pads are sent out from the discharge port 2. The specific structure of the cutting mechanism 200 is not the content to be protected in this application and will not be described in detail. The cutting mechanism 200 can adopt the cutting structure in the existing paper pad filling machine.

[0056] refer to Figures 3 to 7 The paper feeding assembly includes a drive wheel 41, a driven wheel 42, a drive component 43, and a pressing mechanism. The drive wheel 41 and the driven wheel 42 are located on both sides of the flow channel 3. Parts of the drive wheel 41 and the driven wheel 42 extend into the flow channel 3. Both the drive wheel 41 and the driven wheel 42 are made of rubber to increase the friction with the paper pad. The drive component 43 drives the drive wheel 41 to rotate. The pressing mechanism can drive the driven wheel 42 to press against the drive wheel 41. Under the action of the drive component 43, the drive wheel 41 can drive the driven wheel 42 to rotate. The drive wheel 41 and the driven wheel 42 rotate in opposite directions. When the drive component 43 drives the drive wheel 41 to rotate, the drive wheel 41 and the driven wheel 42 can bite the paper pad in the flow channel 3 and convey the paper pad towards the discharge port 2.

[0057] refer to Figures 3 to 5In this embodiment, the pressing mechanism includes a swing frame 44 and a tension spring 45. The driven wheel 42 is mounted on the swing frame 44 and can rotate on the swing frame 44. One end of the tension spring 45 is fixed to the swing frame 44, and the other end of the tension spring 45 is fixed. The tension spring 45 can drive the swing frame 44 to swing so that the driven wheel 42 presses against the driving wheel 41. Specifically, the swing frame 44 includes a mounting post 441, an upper mounting plate 442, a lower mounting plate 443, and a rotating shaft 444. The bottom of the mounting post 441 is inserted and fixed to a mounting base 4411, which is fixed to the base 5. One end of the upper mounting plate 442 is fitted onto the mounting post 441. The upper mounting plate 442 can rotate on the mounting post 441 and can swing about the mounting post 441. A limit ring can be installed on the mounting post 441 to restrict the upper mounting plate 442 from moving axially along the mounting post 441. The lower mounting... One end of the lower mounting plate 443 is fitted onto the mounting post 441. The lower mounting plate 443 can rotate on the mounting post 441 and can swing about the mounting post 441 as its swing center. A limit ring can be installed on the mounting post 441 to restrict the lower mounting plate 443 from moving axially along the mounting post 441. The upper mounting plate 442 and the lower mounting plate 443 are arranged vertically. The driven wheel 42 is fitted onto the rotating shaft 444. The top and bottom parts of the rotating shaft 444 are... Alternatively, the driven wheel 42 can be hinged (e.g., via bearings) to the upper mounting plate 442 and the lower mounting plate 443, allowing it to rotate between the upper mounting plate 442 and the lower mounting plate 443. Or, the top and bottom of the rotating shaft 444 can be fixed to the upper mounting plate 442 and the lower mounting plate 443 respectively, with the driven wheel 42 mounted on the rotating shaft 444 via bearings, so that the driven wheel 42 can rotate on the rotating shaft 444, i.e., the driven wheel 42 can rotate between the upper mounting plate 442 and the lower mounting plate 443.

[0058] refer to Figure 5In this embodiment, there are two tension springs 45. A first fixing bolt 4421 is installed on the upper mounting plate 442, and a second fixing bolt 4431 is installed on the lower mounting plate 443. A fixing seat 432 is installed on the drive component 43, and one end of the fixing seat 432 is fixed to the cutter mechanism 200. A third fixing bolt 4321 is installed on the fixing seat 432. A hook 2001 is installed on the cutter mechanism 200. One end of a spring 45 is fixed to the first fixing bolt 4421, and the other end of the spring 45 is fixed to the third fixing bolt. On bolt 4321, one end of another spring 45 is fixed to the second fixing bolt 4431, and the other end of the spring 45 is fixed to hook 2001. Both springs 45 are in a stretched state. The springs 45 can tighten the upper mounting plate 442 and the lower mounting plate 443 on the swing frame 44, so that the driven wheel 42 on the swing frame 44 is in close contact with the driving wheel 41, generating a stable clamping force. When the paper is fed, the upper mounting plate 442 and the lower mounting plate 443 on the swing frame 44 can swing slightly, that is, the driven wheel 42 can swing slightly, ensuring the thickness after forming. The randomly changing paper pad will not slip or jam when passing between the drive wheel 41 and the driven wheel 42. Using spring 45 to tighten the driven wheel 42 enables self-compensation for wear on the wheel surfaces of the drive wheel 41 and driven wheel 42 after prolonged operation, preventing gaps between them that could cause slippage during paper feeding. The design of spring 45 tightening the driven wheel 42 and its slight oscillation solves the problems of paper pad slippage and paper jams, while also achieving self-compensation for wear on the wheel surfaces of the drive wheel 41 and driven wheel 42. The tension of spring 45... In this configuration, the upper mounting plate 442, lower mounting plate 443, and driven wheel 42 can swing around the mounting column 441 as the swing center, thereby making the driven wheel 42 between the upper mounting plate 442 and the lower mounting plate 443 tightly fit with the driving wheel 41, generating a stable clamping force. When the paper is fed between the driving wheel 41 and the driven wheel 42, through the friction of the paper pad, the driving wheel 41 can drive the driven wheel 42 to rotate on the swing frame 44 in the opposite direction to the rotation direction of the driving wheel 41, thereby driving the formed paper pad to be continuously conveyed to the discharge port 2.

[0059] In other embodiments, the clamping mechanism may also be structured such that the upper mounting plate 442 and / or the lower mounting plate 443 are pressed toward the driving wheel 41 by a compression spring, the piston rod of the cylinder, and the push rod of the electric push rod, so that the driven wheel 42 and the driving wheel 41 are in close contact.

[0060] refer to Figures 3 to 5The detection device 6 is installed on the upper mounting plate 442. The detection device 6 is connected to the controller (not shown) via a wiring harness. The controller is connected to the alarm (not shown) via a wiring harness. Both the controller and the alarm are installed in the housing 100. The controller can be a microcontroller or a single-chip microcomputer, or it can be the controller of the filling paper pad machine itself. The detection device 6 can detect whether the rotation of the driven wheel 42 is normal. When paper jam occurs in the flow channel 3, the rotation of the driven wheel 42 will be abnormal, such as the driven wheel 42 stopping or rotating very slowly. At this time, the detection device 6 detects that the rotation of the driven wheel 42 is abnormal and an abnormality has occurred. At this time, the detection device 6 sends the detected signal to the controller, and the controller controls the alarm to sound an alarm, so as to notify the operator to deal with the paper jam situation as soon as possible, avoid poor paper pad forming, and not affect the production efficiency of the filling paper pad machine. It also avoids batch scrap caused by the sudden failure of the driven wheel 42 (the driven wheel 42 stops rotating or rotates very slowly).

[0061] refer to Figures 3 to 5In this embodiment, the detection device 6 is a proximity switch. Four detection posts 421 are installed on the end face of the driven wheel 42 near the upper mounting plate 442. The four detection posts 421 are evenly arranged along the circumference of the driven wheel 42. When the driven wheel 42 rotates normally, the four detection posts 421 can trigger the detection device 6 (proximity switch) at a stable time interval T. When paper jam occurs in the flow channel 3, causing the driven wheel 42 to stop rotating, the detection posts 421 on the driven wheel 42 will either continuously trigger the detection device 6 (proximity switch) or fail to trigger the detection. Device 6 (proximity switch): When paper jam occurs in the flow channel 3, causing the driven roller 42 to rotate very slowly (below its normal rotational speed), the four detection posts 421 on the driven roller 42 will trigger the detection device 6 (proximity switch) at time intervals greater than T. When paper is feeding normally in the flow channel 3, the four detection posts 421 on the end face of the driven roller 42 will stably trigger the detection device 6 (proximity switch) at time intervals of T. That is, the detection device 6 will send a switching signal to the controller at stable time intervals of T, and the controller will determine the driven roller... When the driven wheel 42 rotates normally, but a paper jam occurs in the flow channel 3, the rotation of the driven wheel 42 becomes abnormal. The driven wheel 42 either stops rotating or rotates very slowly. At this time, the driving wheel 41 rotates continuously, and the paper pad is not conveyed or is conveyed very slowly. The driven wheel 42 is in a slipping state. When the driven wheel 42 stops rotating, the detection post 421 on the end face of the driven wheel 42 either continuously triggers the detection device 6 or fails to trigger the detection device 6. That is, the detection device 6 either continuously generates a switch signal or fails to generate a switch signal. The detection device 6 cannot send the switch signal to the controller at a stable interval T. The controller judges that the driven wheel 42 is rotating abnormally and controls the alarm to sound to notify the operator to deal with the paper jam immediately. When the driven wheel 42 rotates very slowly, the four detection posts 421 on the end face of the driven wheel 42 trigger the detection device 6 at an interval greater than T. The detection device 6 sends the switch signal to the controller at an interval greater than T. The controller judges that the driven wheel 42 is rotating abnormally and controls the alarm to sound to notify the operator to deal with the paper jam immediately.

[0062] In this embodiment, the driving component 43 is a motor, which is inserted into the drive wheel 41. Because the driving component 43 is inserted into the drive wheel 41, the paper-feeding wheel surface of the drive wheel 41 can be close to the middle of the motor, instead of being directly mounted on the motor shaft like a traditional cylindrical wheel. This reduces the overall height of the driving component 43 and the drive wheel 41, thereby reducing the overall height of the machine. This optimizes the internal structural layout of the filling paper pad machine, reducing the overall size and weight, and significantly improving convenience and flexibility, thus meeting various usage scenarios. Specifically, refer to... Figures 4 to 7An annular protrusion 411 with an outer diameter smaller than that of the drive wheel 41 is formed on the end face of the drive wheel 41. A first flat portion 412 is formed on the inner wall of the annular protrusion 411. A third flat portion 4311 is formed on the drive shaft 431 of the drive component 43. A fourth flat portion 72 is formed on the inner wall of the connecting bushing 7. The connecting bushing 7 is fitted onto the drive shaft 431 of the drive component 43. The fourth flat portion 72 abuts against the third flat portion 4311 so that the connecting bushing 7 rotates synchronously with the drive shaft 431 of the drive component 43. A second flat portion 71 is also formed on the outer wall of the connecting bushing 7. A receiving cavity 413 coaxial with the drive wheel 41 is formed on the drive wheel 41. The inner diameter of the receiving cavity 413 is slightly larger than the outer diameter of the drive component 43. The drive component 43 is inserted into the drive wheel. In the receiving cavity 413 of 41, the connecting bushing 7 passes through the receiving cavity 413 of the drive wheel 41 and is inserted into the annular protrusion 411. The second flat portion 71 on the connecting bushing 7 abuts against the first flat portion 412 on the inner wall of the annular protrusion 411. The drive shaft 431 of the drive component 43 can drive the connecting bushing 7 to rotate synchronously. The connecting bushing 7 can drive the drive wheel 41 to rotate through the annular protrusion 411. The cooperation between the second flat portion 71 and the first flat portion 412 can ensure that the drive wheel 41 and the connecting bushing 7 rotate synchronously. In this way, the drive component 43 can drive the drive wheel 41 to rotate synchronously through the connecting bushing 7 and realize that the drive component 43 is inserted into the drive wheel 41. The paper feeding wheel surface of the drive wheel 41 is close to the middle of the drive component 43 (motor). Figure 6 As shown in the figure, the overall height of the drive component 43 and the drive wheel 41 can be reduced, eliminating the traditional transmission structure between the motor and the drive wheel, saving internal space of the machine, and optimizing the internal structural layout of the filling paper pad machine to reduce the overall size of the machine.

[0063] refer to Figures 5 to 7 The bottom end of the connecting bushing 7 is inserted and fixed in the inner ring of the bearing seat 8. The bearing seat 8 is fixed on the base 5. The connecting bushing 7 can rotate smoothly on the bearing seat 8, ensuring that the drive wheel 41 can rotate smoothly, so that the paper pad can be smoothly conveyed to the discharge port 2. The drive component 43 is mounted on the cutter mechanism 200 through the fixed seat 432 to ensure the overall stability of the drive component 43 and the drive wheel 41.

[0064] refer to Figure 2 , Figure 4 and Figure 8A reversible protective door 21 is installed at the discharge port 2. A first detection sensor 9 detects whether the protective door 21 is open, and a second detection sensor 10 detects whether paper pads are being fed out of the discharge port 2. When a paper pad is fed out of the discharge port 2, the reversible protective door 21 is lifted by the paper pad, the first detection sensor 9 detects that the protective door 21 is open, and the second detection sensor 10 detects that a paper pad has come out. At this time, the paper pad filling machine is in a normal output state. When the cutting mechanism 200 of the paper pad filling machine cuts the paper pad, the paper pad is removed for use, the protective door 21 falls, the first detection sensor 9 detects that the protective door 21 is closed, and the second detection sensor 10 detects that there are no more paper pads at the discharge port 2. At this time, the paper pad filling machine automatically stops to avoid situations where the drive wheel 41 idles or paper breaks are not detected in time. The first detection sensor 9 and the second detection sensor 10 can jointly monitor the output status of the paper pads in real time to ensure the accuracy of monitoring. Automatic stopping when the drive wheel 41 idles or paper breaks reduces manual intervention and lowers operational complexity. Specifically, refer to... Figure 2 , Figure 4 and Figure 8 The protective door 21 includes a door body 211 and a flip shaft 212. The two ends of the flip shaft 212 are respectively inserted into two opposite side walls of the discharge port 2. The flip shaft 212 can rotate on the side walls of the discharge port 2. The top of the door body 211 is fixed to the flip shaft 212. A detection plate 213 is installed on the end of the flip shaft 212. In this embodiment, the first detection sensor 9 is a proximity switch. The first detection sensor 9 is installed on the outer wall of the discharge port 2 and is located on the side of the detection plate 213. When the door body 211 is closed (… Figure 8(As shown in the diagram), the detection piece 213 can trigger the first detection sensor 9 (proximity switch), and the second detection sensor 10 is a through-beam photoelectric sensor. The transmitter and receiver of the through-beam photoelectric sensor are respectively installed on the outer walls of two opposite side walls of the discharge port 2. When the paper pad is sent out from the discharge port 2, the paper pad can trigger the second detection sensor 10 (through-beam photoelectric sensor). After the paper pad is sent out from the discharge port 2, the door 211 is lifted by the paper pad, and the door 211 drives the rotating shaft 212 to rotate. The rotating shaft 212 drives the detection piece 213 away from the first detection sensor 9 (proximity switch), and the first detection sensor 9 does not generate a switch signal. At the same time, the second detection sensor 10 (through-beam photoelectric sensor) detects that a paper pad has come out. At this time, the paper pad filling machine is in operation. When the paper pad is cut by the cutting mechanism 200 of the filling paper pad machine under normal output conditions, the paper pad is removed and used. The door 211 falls down, and the door 211 drives the rotating shaft 212 to rotate. The rotating shaft 212 drives the detection plate 213 to approach the first detection sensor 9. The detection plate 213 triggers the first detection sensor 9, and the first detection sensor 9 generates a switch signal. At the same time, the second detection sensor 10 (through-beam photoelectric sensor) detects that there is no paper pad at the discharge port 2. At this time, the filling paper pad machine automatically stops to avoid the situation where the drive wheel 41 spins idly or the paper breakage is not detected in time. The first detection sensor 9 (proximity switch) and the second detection sensor 10 (through-beam photoelectric sensor) can jointly monitor the output status of the paper pad in real time. The machine will automatically stop when the drive wheel 41 spins idly or the paper breaks.

[0065] In this embodiment, the first detection sensor 9 and the second detection sensor 10 jointly monitor the output status of the paper pad. In other embodiments, if necessary, only the first detection sensor 9 may be installed, and a detection plate 213 adapted to the first detection sensor 9 may be installed on the end of the flip shaft 212. In other embodiments, if necessary, only the second detection sensor 10 may be installed.

[0066] refer to Figures 1 to 8In this utility model of a paper pad filling machine, raw paper enters through the feed inlet 1. The paper is squeezed and contracted at the feed inlet 1, forming a paper pad that enters the flow channel 3. Under the action of the drive component 43, the drive wheel 41 and driven wheel 42 of the paper feeding assembly grip the paper pad and convey it towards the discharge port 2. The drive wheel 41 and driven wheel 42 can continuously convey the formed paper pad towards the discharge port 2. The cutting mechanism 200 can cut the conveyed paper pad into a set length. Because the spring 45 can tighten the upper mounting plate 442 and lower mounting plate 443 on the swing frame 44, the driven wheel... Driven wheel 42 fits tightly against driving wheel 41, generating a stable clamping force. The squeezing force between driving wheel 41 and driven wheel 42 makes the paper pad more firmly formed and less prone to loosening, ensuring the continuous forming quality of the paper pad. During paper feeding, driven wheel 42 can swing slightly to ensure that the paper pad, whose thickness varies randomly after forming, will not slip or jam when passing between driving wheel 41 and driven wheel 42. Using spring 45 to tighten driven wheel 42 can achieve self-compensation for the wear of wheel surfaces after long-term operation of driving wheel 41 and driven wheel 42, preventing gaps from forming between driving wheel 41 and driven wheel 42 that could cause paper feeding problems. In case of slippage, the design of spring 45 tightening the driven wheel 42 and the slight swing of the driven wheel 42 can solve the problems of paper pad slippage and paper jams. At the same time, it can achieve self-compensation after wear of the wheel surfaces of the driving wheel 41 and the driven wheel 42. In addition, the detection device 6 can detect whether the rotation of the driven wheel 42 is normal in real time. When paper jam occurs in the flow channel 3, the rotation of the driven wheel 42 will be abnormal. At this time, the alarm will sound to notify the operator to deal with the paper jam situation as soon as possible, so as to avoid poor paper pad forming and affect the production efficiency of the paper pad filling machine. It also avoids batch damage caused by the sudden failure of the driven wheel 42. Furthermore, the drive component 43 is inserted into the drive wheel 41, and the paper feeding wheel surface of the drive wheel 41 is close to the middle of the drive component 43, thereby reducing the overall height of the drive component 43 and the drive wheel 41. This eliminates the traditional transmission structure between the motor and the drive wheel, saving internal space and optimizing the internal structure layout of the paper pad filling machine to reduce the overall size. In addition, the first detection sensor 9 and the second detection sensor 10 can monitor the output status of the paper pad in real time. The machine will automatically stop when the drive wheel 41 is idling or the paper breaks, reducing manual intervention and lowering the complexity of operation.

[0067] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A paper pad filling machine, characterized in that, include: The feed inlet has a tapering shape with a gradually decreasing longitudinal cross-sectional area; Discharge port; The flow channel is connected at one end to the feed inlet and at the other end to the discharge outlet. A cutting mechanism is located between the other end of the flow channel and the discharge port; and The paper feeding assembly includes a drive wheel, a driven wheel, a driving component, and a pressing mechanism. Both the drive wheel and the driven wheel extend into the flow channel. The driving component drives the drive wheel to rotate, and the pressing mechanism can drive the driven wheel to press against the drive wheel. The drive wheel drives the driven wheel to rotate so as to drive the paper pad in the flow channel to be conveyed towards the discharge port.

2. The paper filling machine according to claim 1, characterized in that, The pressing mechanism includes a swing frame and a tension spring. The driven wheel is hinged to the swing frame, one end of the tension spring is located on the swing frame, and the other end of the tension spring is fixed. The tension spring can drive the swing frame to swing so that the driven wheel presses against the driving wheel.

3. The paper filling machine according to claim 2, characterized in that, It also includes a base, and the swing frame includes a mounting column, an upper mounting plate, a lower mounting plate and a rotating shaft. The end of the mounting column is located on the base, and one end of the upper mounting plate and one end of the lower mounting plate are both located on the mounting column and can rotate on the mounting column. The driven wheel is sleeved on the rotating shaft, and the two ends of the rotating shaft are respectively hinged to the upper mounting plate and the lower mounting plate. One end of the tension spring is located on the upper mounting plate.

4. The filling paper pad machine according to any one of claims 1 to 3, characterized in that, It also includes a detection device, a controller, and an alarm. The detection device is used to detect whether the rotation of the driven wheel is normal. The detection device is electrically connected to the controller, and the controller is electrically connected to the alarm.

5. The paper filling machine according to claim 4, characterized in that, The detection device is a proximity switch, and multiple evenly arranged detection posts are provided on the end face of the driven wheel along the circumference of the driven wheel. When the driven wheel rotates normally, the detection column can trigger the proximity switch at time intervals T. When paper jams occur in the flow channel, the detection column continuously triggers the proximity switch, fails to trigger the proximity switch, or triggers the proximity switch at time intervals greater than T.

6. The filling paper pad machine according to any one of claims 1 to 3, characterized in that, The driving component is a motor, which is inserted into the drive wheel.

7. The paper filling machine according to claim 6, characterized in that, It also includes a connecting bushing. The end face of the drive wheel is provided with an annular protrusion. The inner wall of the annular protrusion is provided with a first flat portion. The outer wall of the connecting bushing is provided with a second flat portion. The connecting bushing is sleeved on the drive shaft of the drive component and rotates synchronously with the drive shaft of the drive component. After passing through the drive wheel, the connecting bushing is inserted into the annular protrusion and the second flat portion abuts against the first flat portion.

8. The paper filling machine according to claim 7, characterized in that, It also includes a base and a bearing housing, with the end of the connecting bushing fixed in the inner ring of the bearing housing, which is located on the base.

9. The filling paper pad machine according to any one of claims 1 to 3, characterized in that, It also includes a first detection sensor and / or a second detection sensor. The discharge port is provided with a flip-up protective door. The first detection sensor can detect whether the protective door is flipped open, and the second detection sensor can detect whether a paper pad is sent out from the discharge port.

10. The paper filling machine according to claim 9, characterized in that, The protective door includes a door body and a tilting shaft. The two ends of the tilting shaft are respectively inserted into two opposite side walls of the discharge port. The tilting shaft can rotate on the side walls of the discharge port. The top of the door body is located on the tilting shaft, and a detection plate is provided at the end of the tilting shaft. The first detection sensor is a proximity switch, and it is located on the side of the detection plate. When the door closes, the detection element triggers the proximity switch. The second detection sensor is a through-beam photoelectric sensor, with the transmitter and receiver of the through-beam photoelectric sensor respectively located on two opposite side walls of the discharge port. When the paper pad is fed out of the discharge port, the paper pad can trigger the through-beam photoelectric sensor.

Images