Equipment and production method for hot melt adhesive net film

Abstract

The invention relates to the technical field of hot melt adhesive net films, in particular to hot melt adhesive net film equipment and a production method.The hot melt adhesive net film equipment comprises a cooling box and a transmission belt and further comprises a feeding port and a discharging port which are formed in the two ends of the cooling box respectively, and the transmission belt drives the hot melt adhesive net film to penetrate through the feeding port to enter the cooling box; then the material passes through the material outlet; the air flow assembly is mounted in the cooling box and used for guiding cooling air flow to pass through the surface of the hot melt adhesive net film for cooling; the lifting assembly is installed in the cooling box and used for driving the hot melt adhesive net film subjected to primary cooling and solidification to be lifted through air pressure so that air below the hot melt adhesive net film can be exhausted; according to the device, through the arrangement of the airflow assembly and the lifting assembly, the bottom space is exposed after the hot melt adhesive net film is lifted, and therefore the situation that air at the bottom of the hot melt adhesive net film cannot be exhausted, and bubbles or wrinkles are formed on the hot melt adhesive net film is avoided.

Description

Technical Field

[0001] The invention relates to the field of hot melt adhesive webs, and in particular to a device and a production method for hot melt adhesive webs. Background Art

[0002] Hot melt adhesive web production equipment is used to manufacture hot melt adhesive webs, which are widely used in textile, clothing, medical, hygiene products and other fields. The cooling process of hot melt adhesive webs is one of the key steps to ensure its final quality and performance. Correct cooling can not only make the hot melt adhesive solidify quickly, but also ensure the structural integrity and surface smoothness of the web.

[0003] When the cooling airflow comes into contact with the high-temperature hot melt adhesive in a molten state, the moisture in the air will condense into water droplets during the cooling process and adhere to the surface of the mesh. The adhesion of condensed water makes it impossible for the air to be discharged in time. If the air cannot be discharged in time during the cooling process or the tension is improperly controlled, bubbles or wrinkles are likely to form, resulting in an uneven surface of the mesh and affecting product quality. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a hot melt adhesive web film equipment and production method.

[0005] In a first aspect, the present invention provides a hot melt adhesive web film device, comprising a cooling box and a transmission belt, and further comprising:

[0006] A feed inlet and a discharge outlet are respectively provided at two ends of the cooling box, and the transmission belt drives the hot melt adhesive web film to pass through the feed inlet into the cooling box and then pass through the discharge outlet;

[0007] An airflow component is installed inside the cooling box and is used to guide the cooling airflow to pass through the surface of the hot melt adhesive mesh film for cooling;

[0008] A lifting assembly is installed inside the cooling box and is used to lift the hot melt adhesive mesh after preliminary cooling and solidification by air pressure, so that the air under the hot melt adhesive mesh can be discharged;

[0009] The transmission belt drives the hot melt adhesive web through the feed port and into the interior of the cooling box. Inside the cooling box, the airflow components are arranged at both ends of the cooling box to blow airflow toward the middle of the cooling box, and the hot melt adhesive web entering the cooling box is cooled by the cooled airflow. After the hot melt adhesive web is initially cooled and solidified, it reaches the position of the lifting component, so that the lifting component pulls the initially solidified hot melt adhesive web to lift up through the action of air pressure. On the one hand, the lifted hot melt adhesive web can pull the hot melt adhesive webs at both ends to form a pulling force, thereby forming tension on the surface of the hot melt adhesive web by pulling, and pulling the hot melt adhesive web taut. The air pressure pulling on the hot melt adhesive web can be adjusted by setting the height of the lifting component. The stretch height can be adjusted to adjust the tension of the hot melt adhesive web. On the other hand, the hot melt adhesive web is lifted by the air pressure, so that the space at the bottom is exposed after the hot melt adhesive web is lifted. After the bottom space is exposed, under the action of the airflow components at both ends, the airflow drives the air at the bottom of the hot melt adhesive web to flow to the middle, so that the air pressure of the airflow flowing through the airflow component causes the air at the bottom of the hot melt adhesive web to be discharged from the lifted part in the middle of the hot melt adhesive web, which helps to avoid the air at the bottom of the hot melt adhesive web from being unable to be discharged, resulting in the air at the bottom of the hot melt adhesive web being offset when the airflow component blows the hot melt adhesive web, forming bubbles or wrinkles on the hot melt adhesive web, which helps to improve the production quality of the hot melt adhesive web.

[0010] Preferably, the airflow component comprises:

[0011] A first air pressure box, fixed to one end of the cooling box close to the feed port, wherein a plurality of first spaces in a linear array are arranged inside the first air pressure box;

[0012] A plurality of first air outlets are respectively opened on the side walls of each of the first spaces;

[0013] A plurality of first curved plates, respectively fixed inside each of the first spaces;

[0014] A plurality of second negative pressure pumps are fixed to the top of the first air pressure box and are connected to each of the first spaces respectively;

[0015] A second air pressure box is fixed to one end of the cooling box near the discharge port, wherein a plurality of second spaces in a linear array are arranged inside the second air pressure box, and a second air outlet is opened on the side wall of each second space;

[0016] A plurality of second curved plates, respectively fixed inside each of the second air outlets;

[0017] A plurality of third negative pressure pumps are fixed to the top of the second air pressure box and are connected to each of the second spaces respectively;

[0018] The second negative pressure pump delivers the airflow to the first air pressure box, and the first curved plate is arranged so that the airflow will not be directly discharged from the first air outlet after entering the first air pressure box, so that the airflow is evenly discharged from the first air outlet;

[0019] The third negative pressure pump conveys the airflow to the second air pressure box, and the second curved plate blocks the airflow, so that the airflow will not be discharged directly from the second air outlet, but will be discharged evenly, so that the cooling box conveys cooling airflow from both ends to the middle, thereby cooling the hot melt adhesive web passing through the inside of the cooling box.

[0020] Preferably, the airflow component further comprises:

[0021] A condensation box, fixed inside the cooling box;

[0022] An air inlet is opened at one end of the condensing box, is arranged at the inner center of the cooling box and is located above the driving belt;

[0023] A desiccant block fixed inside the condensation box;

[0024] A connecting port is provided at the other end of the condensation box and is sealedly connected to the top of the first air pressure box, so that all of the second negative pressure pump is located inside the connecting port;

[0025] The second negative pressure pump transports the airflow at the connecting port to the interior of the first air pressure box, so that negative pressure is formed inside the connecting port. Under the action of the negative pressure, the airflow flows along the cooling box, the air inlet, the interior of the condensing box, the desiccant block and the connecting port, so that the moisture condensed in the air by the hot melt adhesive web passing through the interior of the cooling box after being cooled by the cooling airflow enters the interior of the condensing box along with the flow of the airflow, and the airflow is dried under the action of the desiccant block inside the condensing box, which is beneficial to remove moisture from the airflow, thereby helping to avoid the situation where moisture in the airflow drips onto the hot melt adhesive web after condensation, making it difficult for air to be discharged.

[0026] Preferably, the lifting assembly comprises:

[0027] A mounting frame fixed inside the cooling box;

[0028] Four rotating rollers are arranged in a rectangular array and are rotatably mounted inside the cooling box;

[0029] A breathable mesh membrane, a transmission sleeve is arranged on the outer rings of the four rotating rollers;

[0030] A plurality of exhaust holes are provided in a linear array through the top of the mounting frame;

[0031] A plurality of first negative pressure pumps are fixed to the top of the condensation tank, and the input end of each of the first negative pressure pumps is connected to each of the exhaust holes through a first connecting pipe;

[0032] A plurality of second connecting pipes, respectively connected between each of the first negative pressure pumps and the condensation tank;

[0033] A first motor is fixed to the outer wall of the cooling box and drives one of the rotating rollers to rotate through an output shaft;

[0034] After the first negative pressure pump is started, the airflow inside the mounting frame is discharged, so that a negative pressure space is formed inside the mounting frame, so that the hot melt adhesive mesh passing through the bottom is pulled upward under the action of negative pressure, thereby pulling the bottom of the hot melt adhesive mesh to form a gap, which is conducive to the discharge of air from the lifted gap, thereby helping to avoid the formation of bubbles;

[0035] The breathable mesh is set to be taut, so that the hot melt adhesive mesh that is lifted upward under the negative pressure and attached to the surface of the breathable mesh will not continue to be lifted upward under the negative pressure, thereby helping to avoid the situation where the negative pressure force pulls the surface of the hot melt adhesive mesh to deform;

[0036] After the first motor is started, it drives the rotating roller connected to it to rotate, and the rotating roller drives the breathable mesh to transmit. The transmitted breathable mesh and the hot melt adhesive mesh have the same transmission speed and direction, so that the breathable mesh and the hot melt adhesive mesh will not move relative to each other. While the hot melt adhesive mesh is lifted by the negative pressure, it can continue to drive the hot melt adhesive mesh to move, which helps to avoid interference with the transmission of the hot melt adhesive mesh and cause wrinkles to form on the surface of the hot melt adhesive mesh.

[0037] Preferably, the airflow component further comprises:

[0038] A plurality of first condensation tubes fixed inside the condensation box;

[0039] A plurality of partition plates are respectively fixed inside each of the first condensation tubes to divide the inside of the first condensation tube into a U-shaped channel;

[0040] A first pipe is fixed on the side wall of the condensation box and is used to connect condensed water or low-temperature gas of an external device. The interior of the first pipe is divided into a plurality of independent third spaces by a partition plate. The U-shaped channels inside all the first condensation pipes are connected to adjacent third spaces respectively.

[0041] A second pipe, fixed inside the first pipe, one end of which is connected to the first pipe;

[0042] Condensed water or low-temperature gas enters from the first pipe, and then flows in sequence along the third space and the U-shaped channel inside the first condenser tube, the third space, and the U-shaped channel inside the first condenser tube until it flows to the second pipe, and then is discharged along the second pipe, so that the condensed water or low-temperature gas forms a flow path inside the first condenser tube, the first pipe, and the second pipe, so that the temperature of the first condenser tube decreases after the condensed water or low-temperature gas passes through, so that after the airflow entering the condensation box contacts the first condenser tube, the moisture contained in the airflow condenses and precipitates and adheres to the surface of the first condenser tube, and the temperature of the airflow decreases after passing through, and can be discharged from the first outlet again to cool the hot melt adhesive film, which is beneficial for the moisture in the air to be precipitated before reaching the desiccant block, thereby helping to extend the service life of the desiccant block and maintain the water absorption of the desiccant block.

[0043] Preferably, the airflow component further comprises:

[0044] A plurality of movable racks are slidably mounted inside the condensation box, a circular hole is opened in the middle of each movable rack, a rubber pad is arranged on the edge of each circular hole, and the rubber pad is in sliding contact with the outer wall of the first condensation tube;

[0045] A plurality of frames are slidably mounted inside the condensing box, and each of the frames is slidably connected to each of the moving racks and is limited by friction with the moving racks;

[0046] A plurality of bidirectional screws are rotatably installed inside the condensing box, and each of the movable frames is threadedly connected to each of the bidirectional screws;

[0047] A plurality of second motors are fixed to the top of the mounting frame and respectively drive each of the bidirectional screws to rotate;

[0048] After the second motor is started, it drives the bidirectional screw to rotate. After the bidirectional screw rotates, it drives the moving frame threadedly connected thereto to move back and forth. The moving frame drives the frame to move synchronously under the action of friction. When the moving frame moves, the rubber pad inside the circular hole scrapes the condensed water droplets on the outer wall of the first condensation tube, thereby driving the condensed water flow to drip into the interior of the frame to be collected, thereby preventing the condensed water from accumulating for a long time and dripping from the air inlet to the hot melt adhesive mesh film.

[0049] When the movable rack drives the frame to move synchronously to against the desiccant block through friction, it is blocked by the desiccant block, so that the movable rack cannot drive the frame to move when it continues to move. As a result, after the movable rack moves through the entire first condenser tube and moves in the opposite direction under the action of the bidirectional screw, it can continue to drive the frame to move through friction until the frame moves to be blocked by the inner wall of the condensation box, and thus moves back and forth.

[0050] Preferably, the airflow component further comprises:

[0051] A plurality of third connecting pipes, respectively fixedly connected to the bottom of each of the frames;

[0052] A collecting box, fixed to the bottom of the condensing box, and all the third connecting pipes are connected to the collecting box;

[0053] The third connecting pipe transports the water flow inside the frame to the collecting box, so that the collecting box collects the condensed water. The collected condensed water can be collected and transported to the inside of the first condensing pipe for reuse.

[0054] Preferably, it also includes:

[0055] A cooling roller, rotatably mounted inside the cooling box;

[0056] A third motor is fixed to the side wall of the cooling box and is used to drive the cooling roller to rotate through an output shaft;

[0057] A plurality of second condensing tubes are fixed in a circumferential array inside the cooling box and are sequentially connected to each other and the second pipe, and the second condensing tubes are located in the inner ring space of the cooling roller;

[0058] After the third motor is started, the output shaft drives the cooling roller to rotate. After the cooling roller rotates, the hot melt adhesive web is pressed downward again so that the hot melt adhesive web can fit the surface of the transmission belt, thereby removing the air at the bottom of the transmission belt.

[0059] The second condenser is connected to the second pipeline, so that cooling water passes through the second condenser, thereby cooling the cooling roller, so that the cooling roller can be aligned and cooled while pressing the hot melt adhesive web.

[0060] In a second aspect, the present invention provides a method for producing a hot melt adhesive web, wherein a plurality of temperature sensors are fixed in a linear array inside the cooling box, a control unit is installed inside the cooling box, the control unit includes a user end, and the airflow component includes a temperature control unit. The production method includes the following steps:

[0061] The control unit acquires a plurality of temperature information from each of the temperature sensors;

[0062] The control unit obtains the standard temperature from the user terminal;

[0063] The control unit compares each of the temperature information with the standard temperature. When the temperature information is greater than the standard temperature, the control unit generates temperature reduction control information, which is used to control the airflow component to reduce the cooling temperature. When the temperature information is less than the standard temperature, the control unit generates temperature increase control information, which is used to control the airflow component to increase the cooling temperature.

[0064] The control unit sends the temperature reduction control information or the temperature increase control information to the temperature control unit;

[0065] The temperature sensor detects the temperature of the hot melt adhesive web surface in the middle of the cooling box and forms temperature information. The temperature sensor then sends the temperature information to the control unit, so that the control unit obtains the temperature information. The staff can input the temperature range that the hot melt adhesive web should be in when passing through the middle of the cooling box through the user end, so that the control unit can obtain the standard temperature from the user end. The control unit then compares the standard temperature with the temperature information. When the temperature information is greater than the standard temperature, it means insufficient cooling. At this time, the control unit generates cooling control information to control the temperature control unit to reduce the airflow temperature delivered by the airflow component, thereby adjusting and enhancing the cooling effect on the hot melt adhesive web. When the temperature information is less than the standard temperature, it means excessive cooling, which is easy to cause damage to the hot melt adhesive web. At this time, the control unit generates heating control information to control the temperature control unit to increase the airflow temperature delivered by the airflow component, thereby adjusting and weakening the cooling effect on the hot melt adhesive web, which is beneficial to make the cooling effect on the hot melt adhesive web uniform and stable, thereby helping to avoid the formation of bubbles in the hot melt adhesive web due to uneven cooling.

[0066] Preferably, a humidity sensor is installed inside the condensation box, and further comprises:

[0067] The control unit acquires humidity information from the humidity sensor;

[0068] The control unit obtains a humidity threshold from the user terminal;

[0069] The control unit compares the humidity information with the humidity threshold, and when the humidity information is greater than or equal to the humidity threshold, the control unit generates warning information, and the warning information is used to issue a warning at the user end;

[0070] The control unit sends the warning information to the user terminal;

[0071] The control unit sends the warning information to the second motor to control the second motor to increase the driving speed;

[0072] The humidity sensor can detect the humidity inside the condensation box and generate humidity information after the detection. Then the humidity sensor sends the humidity information to the control unit so that the control unit can obtain the humidity information. The staff can input the humidity threshold from the user end so that the control unit can obtain the humidity threshold from the user end. Then the control unit compares the humidity information with the humidity threshold. When the humidity information is greater than or equal to the humidity threshold, it means that the drying effect of the desiccant block is weakened. At this time, the desiccant block needs to be replaced. At this time, the control unit generates a warning message and sends the warning message to the user end to prompt the staff to replace the desiccant block. At the same time, the control unit sends the warning message to the second motor to enhance the second motor's push on the condensed water flow, thereby enhancing the contact between the passing airflow and the surface of the first condenser tube, thereby enhancing the condensation effect on the water flow in the air, and to a certain extent, enhancing the removal of moisture in the airflow until the staff replaces the desiccant block.

[0073] Compared with the prior art, the present invention has the following beneficial effects:

[0074] The present invention, through the arrangement of the airflow component and the lifting component, enables the hot melt adhesive web to be lifted to expose the space at the bottom, thereby preventing the air at the bottom of the hot melt adhesive web from being unable to be discharged, resulting in the air at the bottom being offset when the airflow component blows the hot melt adhesive web, forming bubbles or wrinkles on the hot melt adhesive web, thereby improving the quality of hot melt adhesive web production. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0076] Figure 2 The structure of the present invention after the overall section is schematically shown. Figure 1 .

[0077] Figure 3 The structure of the present invention after the overall section is schematically shown. Figure 2 .

[0078] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0079] Figure 5 The structure of the present invention after the overall section is schematically shown. Figure 3 .

[0080] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at point B in the middle.

[0081] Figure 7 The structure of the present invention after the overall section is schematically shown. Figure 4 .

[0082] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at point C in the middle.

[0083] Fig. 9 It is a schematic diagram of the method flow of the present invention.

[0084] In the figure: 1, cooling box; 101, feed port; 102, discharge port; 2, transmission belt; 3, hot melt adhesive mesh; 4, breathable mesh; 401, mounting frame; 402, rotating roller; 403, exhaust hole; 404, first connecting pipe; 405, first negative pressure pump; 406, first motor; 5, first air pressure box; 501, first air outlet; 502, first curved plate; 503, second negative pressure pump; 6, condensation box; 601, air inlet; 602, desiccant block ; 603, connecting port; 604, second connecting pipe; 7, first condenser; 701, partition plate; 702, first pipeline; 703, second pipeline; 8, movable frame; 801, frame; 802, bidirectional screw; 803, second motor; 9, collecting box; 901, third connecting pipe; 10, cooling roller; 1001, third motor; 1002, second condenser; 11, second air pressure box; 1101, second curved plate; 1102, third negative pressure pump. DETAILED DESCRIPTION

[0085] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0086] like Figures 1 to 8 The hot melt adhesive web film device shown includes a cooling box 1 and a transmission belt 2, and also includes:

[0087] The feed port 101 and the discharge port 102 are respectively provided at the two ends of the cooling box 1. The transmission belt 2 drives the hot melt adhesive web 3 to pass through the feed port 101 into the cooling box 1, and then pass through the discharge port 102;

[0088] An airflow component is installed inside the cooling box 1 and is used to guide the cooling airflow to pass through the surface of the hot melt adhesive film 3 for cooling;

[0089] The lifting assembly is installed inside the cooling box 1 and is used to lift the hot melt adhesive mesh 3 after preliminary cooling and solidification by air pressure, so that the air under the hot melt adhesive mesh 3 can be discharged;

[0090] When the cooling airflow contacts the hot melt adhesive in the molten state, the moisture in the air will condense into water droplets during the cooling process and adhere to the surface of the mesh. The adhesion of condensed water makes it impossible for the air to be discharged in time. If the air cannot be discharged in time during the cooling process or the tension is not properly controlled, bubbles or wrinkles are easily formed, resulting in an uneven surface of the mesh, affecting product quality.

[0091] This embodiment of the present invention can solve the above problems. The specific implementation method is as follows: the transmission belt 2 drives the hot melt adhesive web 3 to pass through the feed port 101 and enter the interior of the cooling box 1. Inside the cooling box 1, the airflow components are set at both ends of the cooling box 1 to blow airflow toward the middle of the cooling box 1, and the hot melt adhesive web 3 entering the cooling box 1 is cooled by the cooled airflow. After the hot melt adhesive web 3 is initially cooled and solidified, it reaches the position of the lifting component, so that the lifting component pulls the initially solidified hot melt adhesive web 3 to lift up through the action of air pressure. On the one hand, the lifted hot melt adhesive web 3 can pull the hot melt adhesive web 3 at both ends to form a pulling force, thereby forming tension on the surface of the hot melt adhesive web 3 by pulling, and pulling the hot melt adhesive web 3 tight. By setting the lifting component The height can adjust the air pressure stretching height of the hot melt adhesive web 3, thereby adjusting the tension of the hot melt adhesive web 3. On the other hand, the hot melt adhesive web 3 is lifted by the air pressure, so that the bottom space is exposed after the hot melt adhesive web 3 is lifted. After the bottom space is exposed, under the action of the airflow components at both ends, the airflow drives the air at the bottom of the hot melt adhesive web 3 to flow to the middle, so that the air pressure of the airflow flowing through the airflow component causes the air at the bottom of the hot melt adhesive web 3 to be discharged from the lifted part in the middle of the hot melt adhesive web 3, which helps to avoid the air at the bottom of the hot melt adhesive web 3 from being unable to be discharged, resulting in the air at the bottom of the hot melt adhesive web 3 being offset when the airflow component blows the hot melt adhesive web 3, forming bubbles or wrinkles on the hot melt adhesive web 3, which helps to improve the production quality of the hot melt adhesive web 3.

[0092] As an optional embodiment, the airflow component includes:

[0093] The first pressure box 5 is fixed to one end of the cooling box 1 close to the feed port 101, and a plurality of first spaces in a linear array are arranged inside the first pressure box 5;

[0094] A plurality of first air outlets 501 are respectively opened on the side walls of each first space;

[0095] A plurality of first curved plates 502 are respectively fixed inside each first space;

[0096] A plurality of second negative pressure pumps 503 are fixed to the top of the first air pressure box 5 and are connected to each first space respectively;

[0097] The second pressure box 11 is fixed to one end of the cooling box 1 near the discharge port 102. A plurality of second spaces in a linear array are arranged inside the second pressure box 11. A second air outlet is provided on the side wall of each second space.

[0098] A plurality of second curved plates 1101, respectively fixed inside each second air outlet;

[0099] A plurality of third negative pressure pumps 1102 are fixed to the top of the second air pressure box 11 and are connected to each second space respectively;

[0100] The second negative pressure pump 503 delivers the airflow to the first air pressure box 5. The first curved plate 502 is arranged so that the airflow will not be discharged directly from the first air outlet 501 after entering the first air pressure box 5, so that the airflow is discharged evenly from the first air outlet 501.

[0101] The third negative pressure pump 1102 conveys the airflow to the second air pressure box 11, and the second curved plate 1101 blocks the airflow, so that the airflow is not discharged directly from the second air outlet, but is discharged evenly, so that the cooling box 1 conveys cooling airflow from both ends to the middle, thereby cooling the hot melt adhesive web 3 passing through the inside of the cooling box 1 with airflow.

[0102] As an optional embodiment, the airflow component further includes:

[0103] The condensation box 6 is fixed inside the cooling box 1;

[0104] The air inlet 601 is opened at one end of the condenser box 6, arranged at the inner center of the cooling box 1 and above the transmission belt 2;

[0105] A desiccant block 602 is fixed inside the condensation box 6;

[0106] The connection port 603 is opened at the other end of the condensation box 6 and is sealedly connected to the top of the first air pressure box 5, so that all the second negative pressure pumps 503 are located inside the connection port 603;

[0107] The second negative pressure pump 503 transports the airflow at the connecting port 603 to the interior of the first air pressure box 5, so that negative pressure is formed inside the connecting port 603. Under the action of the negative pressure, the airflow flows along the cooling box 1, the air inlet 601, the interior of the condensing box 6, the desiccant block 602 and the connecting port 603, so that the moisture condensed in the air by the hot melt adhesive web 3 passing through the interior of the cooling box 1 after being cooled by the cooling airflow enters the interior of the condensing box 6 along with the flow of the airflow, and the airflow is dried under the action of the desiccant block 602 inside the condensing box 6, which is beneficial to remove moisture in the airflow, thereby helping to avoid the situation where moisture in the airflow drips onto the hot melt adhesive web 3 after condensation, making it difficult for air to be discharged.

[0108] As an optional embodiment, the lifting assembly includes:

[0109] A mounting frame 401 is fixed inside the cooling box 1;

[0110] Four rotating rollers 402 are arranged in a rectangular array and are all rotatably mounted inside the cooling box 1;

[0111] The breathable mesh 4 is provided with a transmission sleeve on the outer rings of the four rotating rollers 402;

[0112] A plurality of exhaust holes 403 are formed in a linear array and are arranged through the top of the mounting frame 401;

[0113] A plurality of first negative pressure pumps 405 are fixed to the top of the condensation tank 6, and the input end of each first negative pressure pump 405 is connected to each exhaust hole 403 through a first connecting pipe 404;

[0114] A plurality of second connecting pipes 604 are respectively connected between each first negative pressure pump 405 and the condensation tank 6;

[0115] The first motor 406 is fixed on the outer wall of the cooling box 1 and drives one of the rotating rollers 402 to rotate through the output shaft;

[0116] After the first negative pressure pump 405 is started, the airflow inside the mounting frame 401 is discharged, so that a negative pressure space is formed inside the mounting frame 401, so that the hot melt adhesive web 3 passing through the bottom is pulled upward under the action of negative pressure, thereby pulling the bottom of the hot melt adhesive web 3 to form a gap, which is conducive to the discharge of air from the lifted gap, thereby helping to avoid the formation of bubbles;

[0117] The breathable mesh 4 is set to be taut, so that the hot melt adhesive mesh 3 that is lifted upward under the negative pressure and attached to the surface of the breathable mesh 4 will not continue to be lifted upward under the negative pressure, thereby helping to avoid the situation where the negative pressure force pulls the surface of the hot melt adhesive mesh 3 to deform;

[0118] After the first motor 406 is started, it drives the rotating roller 402 connected to it to rotate, and the rotating roller 402 drives the breathable mesh 4 to transmit. The transmitted breathable mesh 4 has the same transmission speed and direction as the hot melt adhesive mesh 3, so that the breathable mesh 4 and the hot melt adhesive mesh 3 will not move relative to each other. While the hot melt adhesive mesh 3 is lifted by the negative pressure, it can continue to drive the hot melt adhesive mesh 3 to move, which is beneficial to avoid interference with the transmission of the hot melt adhesive mesh 3, causing wrinkles to form on the surface of the hot melt adhesive mesh 3.

[0119] As an optional embodiment, the airflow component further includes:

[0120] A plurality of first condensation tubes 7 are fixed inside the condensation box 6;

[0121] A plurality of partition plates 701 are respectively fixed inside each first condensation tube 7 to divide the inside of the first condensation tube 7 into a U-shaped channel;

[0122] The first pipe 702 is fixed on the side wall of the condensation box 6 and is used to connect the condensed water or low-temperature gas of the external device. The interior of the first pipe 702 is divided into a plurality of independent third spaces by a partition plate. The U-shaped channels inside all the first condensation pipes 7 are connected to the adjacent third spaces respectively.

[0123] The second pipe 703 is fixed inside the first pipe 702 and one end of the second pipe is connected to the first pipe 702;

[0124] Condensed water or low-temperature gas enters from the first pipe 702, and then flows in sequence along the third space and the U-shaped channel inside the first condenser tube 7, the third space, and the U-shaped channel inside the first condenser tube 7, until it flows to the second pipe 703, and then is discharged along the second pipe 703, so that the condensed water or low-temperature gas forms a flow path inside the first condenser tube 7, the first pipe 702, and the second pipe 703, so that the temperature of the first condenser tube 7 decreases after the condensed water or low-temperature gas passes through, so that after the airflow entering the condensation box 6 contacts the first condenser tube 7, the moisture contained in the airflow condenses and precipitates and adheres to the surface of the first condenser tube 7, and the temperature of the airflow decreases after passing through, and can be discharged again from the first air outlet 501 to cool the hot melt adhesive web 3, which is beneficial for the moisture in the air to be precipitated before reaching the desiccant block 602, thereby helping to extend the service life of the desiccant block 602 and maintain the water absorption of the desiccant block 602.

[0125] As an optional embodiment, the airflow component further includes:

[0126] A plurality of movable racks 8 are slidably mounted inside the condensation box 6. A circular hole is opened in the middle of each movable rack 8. Rubber pads are arranged on the edges of the circular holes. The rubber pads are in sliding contact with the outer wall of the first condensation tube 7.

[0127] A plurality of frames 801 are slidably mounted inside the condensation box 6, and each frame 801 is slidably connected to each movable frame 8, and there is friction limiting between the frame 8 and the movable frame 8;

[0128] A plurality of bidirectional screws 802 are rotatably mounted inside the condensation box 6, and each movable frame 8 is threadedly connected to each bidirectional screw 802;

[0129] A plurality of second motors 803 are fixed to the top of the mounting frame 401, and respectively drive each bidirectional screw 802 to rotate;

[0130] After the second motor 803 is started, it drives the bidirectional screw 802 to rotate. After the bidirectional screw 802 rotates, it drives the movable frame 8 threadedly connected thereto to move back and forth. Under the action of friction, the movable frame 8 drives the frame 801 to move synchronously. When the movable frame 8 moves, the rubber pad inside the circular hole scrapes the condensed water droplets on the outer wall of the first condensation tube 7, thereby driving the condensed water flow to drip into the interior of the frame 801 to be collected, thereby preventing the condensed water from accumulating for a long time and dripping from the air inlet 601 to flow onto the hot melt adhesive mesh 3.

[0131] When the movable rack 8 drives the frame 801 to move synchronously to against the desiccant block 602 through friction, it is blocked by the desiccant block 602, so that the movable rack 8 cannot drive the frame 801 to move when it continues to move. As a result, after the movable rack 8 moves through the entire first condenser tube 7 and moves in the opposite direction under the action of the bidirectional screw 802, it can continue to drive the frame 801 to move through friction until the frame 801 moves to be blocked by the inner wall of the condensation box 6, and thus moves back and forth.

[0132] As an optional embodiment, the airflow component further includes:

[0133] A plurality of third connecting pipes 901 are respectively fixedly connected to the bottom of each frame body 801;

[0134] The collecting box 9 is fixed to the bottom of the condensing box 6, and all the third connecting pipes 901 are connected to the collecting box 9;

[0135] The third connecting pipe 901 transports the water flow inside the frame 801 to the collecting box 9, so that the collecting box 9 collects the condensed water. The collected condensed water can be collected and transported to the inside of the first condensing pipe 7 for reuse.

[0136] As an optional embodiment, it also includes:

[0137] The cooling roller 10 is rotatably mounted inside the cooling box 1;

[0138] The third motor 1001 is fixed on the side wall of the cooling box 1 and is used to drive the cooling roller 10 to rotate through the output shaft;

[0139] A plurality of second condensing tubes 1002 are fixed in a circular array inside the cooling box 1 and are sequentially connected to each other and to the second pipe 703. The second condensing tubes 1002 are located in the inner ring space of the cooling roller 10.

[0140] After the third motor 1001 is started, the output shaft drives the cooling roller 10 to rotate. After the cooling roller 10 rotates, the hot melt adhesive web 3 is pressed downward again, so that the hot melt adhesive web 3 can fit the surface of the transmission belt 2, thereby removing the air at the bottom of the transmission belt 2;

[0141] The second condenser tube 1002 is connected to the second pipe 703, so that cooling water passes through the second condenser tube 1002, thereby cooling the cooling roller 10, so that the cooling roller 10 can be aligned and cooled while pressing the hot melt adhesive web 3.

[0142] like Fig. 9 A production method of a hot melt adhesive web is shown, wherein a plurality of temperature sensors are fixed in a linear array inside a cooling box 1, a control unit is installed inside the cooling box 1, the control unit includes a user end, and the airflow component includes a temperature control unit. The production method includes the following steps:

[0143] The control unit obtains a plurality of temperature information from each temperature sensor;

[0144] The control unit obtains the standard temperature from the user end;

[0145] The control unit compares each temperature information with the standard temperature. When the temperature information is greater than the standard temperature, the control unit generates temperature reduction control information, which is used to control the airflow component to reduce the cooling temperature. When the temperature information is less than the standard temperature, the control unit generates temperature increase control information, which is used to control the airflow component to increase the cooling temperature.

[0146] The control unit sends the temperature reduction control information or the temperature increase control information to the temperature control unit;

[0147] The temperature sensor detects the temperature of the surface of the hot melt adhesive web 3 in the middle of the cooling box 1 and forms temperature information. Then the temperature sensor sends the temperature information to the control unit, so that the control unit obtains the temperature information. The staff can input the temperature range that the hot melt adhesive web 3 should be in when passing through the middle of the cooling box 1 through the user end, so that the control unit can obtain the standard temperature from the user end. Then the control unit compares the standard temperature with the temperature information. When the temperature information is greater than the standard temperature, it means insufficient cooling. At this time, the control unit generates cooling control information to control the temperature control unit to reduce the airflow temperature delivered by the airflow component, thereby adjusting and enhancing the cooling effect on the hot melt adhesive web 3. When the temperature information is less than the standard temperature, it means excessive cooling, which is easy to cause damage to the hot melt adhesive web 3. At this time, the control unit generates heating control information to control the temperature control unit to increase the airflow temperature delivered by the airflow component, thereby adjusting and weakening the cooling effect on the hot melt adhesive web 3, which is beneficial to make the cooling effect on the hot melt adhesive web 3 uniform and stable, thereby helping to avoid the formation of bubbles in the hot melt adhesive web 3 due to uneven cooling.

[0148] As an optional embodiment, a humidity sensor is installed inside the condensation box 6, and further includes:

[0149] The control unit obtains humidity information from the humidity sensor;

[0150] The control unit obtains the humidity threshold from the user end;

[0151] The control unit compares the humidity information with the humidity threshold value. When the humidity information is greater than or equal to the humidity threshold value, the control unit generates a warning message, and the warning message is used to issue a warning at the user end;

[0152] The control unit sends the warning information to the user end;

[0153] The control unit sends the warning information to the second motor 803 to control the second motor 803 to increase the driving speed;

[0154] The humidity sensor can detect the humidity inside the condensation box 6 and generate humidity information after the detection. Then the humidity sensor sends the humidity information to the control unit so that the control unit obtains the humidity information. The staff can input the humidity threshold from the user end so that the control unit can obtain the humidity threshold from the user end. Then the control unit compares the humidity information with the humidity threshold. When the humidity information is greater than or equal to the humidity threshold, it means that the drying effect of the desiccant block 602 is weakened. At this time, the desiccant block 602 needs to be replaced. At this time, the control unit generates a warning message and sends the warning message to the user end to prompt the staff to replace the desiccant block 602. At the same time, the control unit sends the warning message to the second motor 803 to enhance the second motor 803 to promote the condensed water flow, thereby enhancing the contact between the passing airflow and the surface of the first condenser tube 7, thereby enhancing the condensation effect on the water flow in the air, and to a certain extent, enhancing the removal of moisture in the airflow until the staff replaces the desiccant block 602.

[0155] Working principle of the present invention: the transmission belt 2 drives the hot melt adhesive web 3 to pass through the feed port 101 and enter the interior of the cooling box 1. Inside the cooling box 1, the airflow components are arranged at both ends of the cooling box 1 to blow airflow toward the middle of the cooling box 1, and the hot melt adhesive web 3 entering the cooling box 1 is cooled by the cooled airflow. After the hot melt adhesive web 3 is initially cooled and solidified, it reaches the position of the lifting component, so that the lifting component pulls the initially solidified hot melt adhesive web 3 to lift up through the action of air pressure. On the one hand, the lifted hot melt adhesive web 3 can pull the hot melt adhesive web 3 at both ends to form a pulling force, thereby forming tension on the surface of the hot melt adhesive web 3 by pulling, and pulling the hot melt adhesive web 3 taut. By setting the height of the lifting component, the lifting of the hot melt The air pressure stretches the height of the adhesive web 3, thereby adjusting the tension of the hot melt adhesive web 3. On the other hand, the hot melt adhesive web 3 is lifted by the air pressure, so that the space at the bottom is exposed after the hot melt adhesive web 3 is lifted. After the bottom space is exposed, under the action of the airflow components at both ends, the airflow drives the air at the bottom of the hot melt adhesive web 3 to flow to the middle, so that the air pressure of the airflow flowing through the airflow component causes the air at the bottom of the hot melt adhesive web 3 to be discharged from the lifted part in the middle of the hot melt adhesive web 3, which helps to avoid the air at the bottom of the hot melt adhesive web 3 from being unable to be discharged, resulting in the air at the bottom of the hot melt adhesive web 3 being offset when the airflow component blows the hot melt adhesive web 3, forming bubbles or wrinkles on the hot melt adhesive web 3, which helps to improve the production quality of the hot melt adhesive web 3.

[0156] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A hot melt adhesive web film device, comprising a cooling box (1) and a transmission belt (2), characterized in that: Also includes: A feed inlet (101) and a discharge outlet (102) are respectively provided at two ends of the cooling box (1); the transmission belt (2) drives the hot melt adhesive web (3) to pass through the feed inlet (101) into the cooling box (1), and then pass through the discharge outlet (102); An airflow component, installed inside the cooling box (1), and used to guide the cooling airflow to pass through the surface of the hot melt adhesive film (3) for cooling; The lifting assembly is installed inside the cooling box (1) and is used to lift the hot melt adhesive web (3) after preliminary cooling and solidification by air pressure, so that the air under the hot melt adhesive web (3) can be discharged.

2. The hot melt adhesive film device according to claim 1, characterized in that: The airflow assembly comprises: A first air pressure box (5) is fixed to one end of the cooling box (1) close to the feed port (101), wherein a plurality of first spaces in a linear array are arranged inside the first air pressure box (5); A plurality of first air outlets (501), respectively disposed on the side walls of each of the first spaces; A plurality of first curved plates (502), respectively fixed inside each of the first spaces; A plurality of second negative pressure pumps (503), each fixed to the top of the first air pressure box (5), and respectively connected to each of the first spaces; A second air pressure box (11) is fixed to one end of the cooling box (1) close to the discharge port (102), wherein a plurality of second spaces in a linear array are arranged inside the second air pressure box (11), and a second air outlet is provided on the side wall of each second space; A plurality of second curved plates (1101), respectively fixed inside each of the second air outlets; A plurality of third negative pressure pumps (1102) are fixed to the top of the second air pressure box (11) and are respectively connected to each of the second spaces.

3. The hot melt adhesive film device according to claim 2, characterized in that: The airflow assembly also includes: A condensation box (6) is fixed inside the cooling box (1); An air inlet (601) is opened at one end of the condensing box (6), is arranged at the inner center of the cooling box (1) and is located above the transmission belt (2); A desiccant block (602) fixed inside the condensation box (6); The connection port (603) is opened at the other end of the condensation box (6) and is sealedly connected to the top of the first air pressure box (5), so that the entire second negative pressure pump (503) is located inside the connection port (603).

4. The hot melt adhesive web film device according to claim 3, characterized in that: The lifting assembly comprises: A mounting frame (401) fixed inside the cooling box (1); Four rotating rollers (402) are arranged in a rectangular array and are rotatably mounted inside the cooling box (1); A breathable mesh (4), a transmission sleeve arranged on the outer rings of the four rotating rollers (402); A plurality of exhaust holes (403) are provided in a linear array and are disposed through the top of the mounting frame (401); A plurality of first negative pressure pumps (405) are all fixed on the top of the condensation tank (6), and the input end of each of the first negative pressure pumps (405) is connected to each of the exhaust holes (403) through a first connecting pipe (404); A plurality of second connecting pipes (604), respectively connected between each of the first negative pressure pumps (405) and the condensation tank (6); The first motor (406) is fixed on the outer wall of the cooling box (1) and drives one of the rotating rollers (402) to rotate via an output shaft.

5. The hot melt adhesive film device according to claim 4, characterized in that: The airflow assembly also includes: A plurality of first condensation tubes (7) fixed inside the condensation box (6); A plurality of partition plates (701) are respectively fixed inside each of the first condensation tubes (7) to divide the inside of the first condensation tube (7) into a U-shaped channel; A first pipe (702) is fixed on the side wall of the condensation box (6) and is used to connect condensed water or low-temperature gas of an external device. The interior of the first pipe (702) is divided into a plurality of mutually independent third spaces by a partition plate. The U-shaped channels inside all the first condensation pipes (7) are respectively connected to the adjacent third spaces. The second pipe (703) is fixed inside the first pipe (702), and one end of the second pipe is connected to the first pipe (702).

6. The hot melt adhesive web film device according to claim 5, characterized in that: The airflow assembly also includes: A plurality of movable racks (8) are slidably mounted inside the condensation box (6), a circular hole is opened in the middle of each movable rack (8), a rubber pad is arranged on the edge of each circular hole, and the rubber pad is in sliding contact with the outer wall of the first condensation tube (7); A plurality of frames (801) are slidably mounted inside the condensation box (6), and each of the frames (801) is slidably connected to each of the movable racks (8), and there is friction limiting between the frames and the movable racks (8); A plurality of bidirectional screw rods (802) are rotatably mounted inside the condensation box (6), and each of the movable frames (8) is threadedly connected to each of the bidirectional screw rods (802); A plurality of second motors (803) are fixed to the top of the mounting frame (401) and respectively drive each of the bidirectional screws (802) to rotate.

7. The hot melt adhesive web device according to claim 6, characterized in that: The airflow assembly also includes: A plurality of third connecting pipes (901) are respectively fixedly connected to the bottom of each of the frames (801); The collecting box (9) is fixed to the bottom of the condensing box (6), and all the third connecting pipes (901) are connected to the collecting box (9).

8. The hot melt adhesive web film device according to claim 7, characterized in that: Also includes: A cooling roller (10) is rotatably mounted inside the cooling box (1); A third motor (1001) is fixed on the side wall of the cooling box (1) and is used to drive the cooling roller (10) to rotate via an output shaft; A plurality of second condensing tubes (1002) are fixed in a circular array inside the cooling box (1), and are connected to each other in sequence and to the second pipe (703). The second condensing tubes (1002) are located in the inner ring space of the cooling roller (10).

9. A method for producing a hot melt adhesive web, applicable to a device for producing a hot melt adhesive web as claimed in any one of claims 6 to 8, characterized in that: The interior of the cooling box (1) is fixed with a plurality of temperature sensors in a linear array, the interior of the cooling box (1) is installed with a control unit, the control unit includes a user end, the airflow component includes a temperature control unit, and the production method includes the following steps: The control unit acquires a plurality of temperature information from each of the temperature sensors; The control unit obtains the standard temperature from the user terminal; The control unit compares each of the temperature information with the standard temperature. When the temperature information is greater than the standard temperature, the control unit generates temperature reduction control information, which is used to control the airflow component to reduce the cooling temperature. When the temperature information is less than the standard temperature, the control unit generates temperature increase control information, which is used to control the airflow component to increase the cooling temperature. The control unit sends the temperature reduction control information or the temperature increase control information to the temperature control unit.

10. The method for producing a hot melt adhesive web according to claim 9, characterized in that: The condensation box (6) is provided with a humidity sensor inside, and further comprises: The control unit acquires humidity information from the humidity sensor; The control unit obtains a humidity threshold from the user terminal; The control unit compares the humidity information with the humidity threshold, and when the humidity information is greater than or equal to the humidity threshold, the control unit generates warning information, and the warning information is used to issue a warning at the user end; The control unit sends the warning information to the user terminal; The control unit sends the warning information to the second motor (803) to control the second motor (803) to increase the driving speed.

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