Pressing device for mask lamination

Abstract

The pressing device comprises a supporting table, a plurality of supporting legs are arranged on the edge of the supporting table, a first installation opening is formed in the top of the supporting table, a pressing plate is arranged in the middle of the interior of the first installation opening, the bottom of the pressing plate is connected with an ultrasonic generating device, a supporting roller is arranged above the pressing plate, and annular bases are arranged at the two ends of the supporting roller. A strip-shaped pressing base parallel to the axis of the supporting roller is further arranged on the surface of the supporting roller, the two ends of the supporting roller are rotationally installed in a second U-shaped base, the second U-shaped base is connected with a lifting device, and the lifting device drives the supporting roller to be arranged on the pressing plate. When the cloth pressing device is used and the strip-shaped pressing seat rotates by a circle, the strip-shaped pressing seat is in contact with the pressing plate for one time, the position, in contact with the pressing plate, of the strip-shaped pressing seat of the cloth can be subjected to ultrasonic welding due to continuous ultrasonic vibration of the pressing plate, the process is continuous, and the folded cloth can be quickly pressed and welded.

Description

Technical Field

[0001] This utility model relates to the field of mask lamination and pressing technology, specifically a pressing device for mask lamination. Background Technology

[0002] Disposable face masks are made of three or more layers of non-woven fabric, with an environmentally friendly all-plastic strip at the bridge of the nose, and are breathable. They are frequently used in daily life. As people's health awareness continues to increase, face masks have become one of the equipment choices when going out, and the demand for face masks is constantly increasing.

[0003] like Figure 6 As shown, the production of disposable masks involves folding the fabric into three folds. After folding, the fabric needs to be pressed and fixed. Traditional pressing devices can only press the mask fabric and cannot weld it. For example, a laminated pressing device for mask production proposed in document number "CN217373544U" describes in paragraph

[0040] that the mask material is limited, a servo cylinder is activated, and the servo cylinder drives the extrusion roller to move through the connecting plate. The extrusion roller, together with the first and second transport rollers, extrudes the mask layers. It only presses the fabric through the roller shaft.

[0004] For example, document CN111838856A describes a lamination and pressing device for mask production. In paragraph

[0044] of the specification, the fabric first passes through a first pressing device. An electric lifting column extends to change the position of the upper cylinder, altering the distance between the upper and lower cylinders, thus pressing the fabric for initial pressing. When the fabric moves to the support base, a screw drive mechanism drives a roller plate, causing it to move on the fabric for further pressing. The pressed fabric continues to move, and a camera on the auxiliary pressing device takes pictures during this movement to determine if the fabric bulges. If bulging occurs, an electric push rod is activated, causing a rubber pressure strip to descend for further pressing. However, this device only presses the fabric using rollers and cannot weld or sew the mask. Therefore, we propose a lamination and pressing device for mask production. Utility Model Content

[0005] This invention provides a pressing device for mask layering, which has the advantage of continuous pressing and welding, and solves the problems mentioned in the background art.

[0006] The technical solution of this utility model is implemented as follows: A pressing device for mask layering is designed, including a support platform, a number of support legs on the edge of the support platform, a first mounting opening on the top of the support platform, a pressing plate in the middle of the first mounting opening, the bottom of the pressing plate being connected to an ultrasonic generator, a support roller above the pressing plate, annular seats at both ends of the support roller, and a strip-shaped pressing seat parallel to its axis on the surface of the support roller. The two ends of the support roller are rotatably installed in a second U-shaped seat, which is connected to a lifting device. The lifting device drives the support roller to be placed on the pressing plate, and one end of the support roller is driven to rotate by a driving device. The driving device drives the support roller to rotate above the pressing plate, so that the strip-shaped pressing seat intermittently contacts the pressing plate. The device also includes a shearing device on the discharge side of the support roller.

[0007] Preferably, the ultrasonic generator includes a first amplitude transformer rod installed at the bottom of the pressing plate, the bottom of the first amplitude transformer rod being connected to a first transducer, the first transducer being mounted on a mounting plate, the mounting plate being located below the support platform and its two ends being connected to the support legs respectively.

[0008] Preferably, the first mounting port has support wheels at both ends corresponding to the annular seats. The shaft in the middle of the support wheel is rotatably installed in the support. The support is installed on both sides below the first mounting port. The two annular seats are placed on the support wheels. When the strip pressing seat rotates to the lowest position, the strip pressing seat is in contact with the pressing plate.

[0009] Preferably, the lifting device includes a first cylinder installed in the middle of the top surface of the second U-shaped seat. The top of the first cylinder is connected to the first U-shaped frame. The opening of the first U-shaped frame faces downward and its bottom ends are fixed to the support platform respectively. The two sides of the first cylinder are provided with first guide shafts in parallel. The bottom of the first guide shaft is connected to the second U-shaped seat, and the top of the first guide shaft is movably placed in the first U-shaped frame. The top of the first guide shaft is connected through a connecting seat.

[0010] Preferably, the drive device includes a first motor mounted on the connecting seat, and sprockets are respectively provided on the shaft of the first motor and one end of the support roller. The two sprockets are connected by a transmission chain, which is placed in the opening at the top of the first U-shaped frame.

[0011] Preferably, the shearing device includes a second mounting port located on one side of the first mounting port. A second U-shaped frame is provided at the top of the second mounting port. The opening of the second U-shaped frame faces downward and both ends are fixed to the support platform. A transmission device is provided inside the second U-shaped frame and the second mounting port. A first U-shaped seat is installed on the side of the second U-shaped frame away from the first mounting port. A vertically downward third cylinder is provided in the middle of the side of the first U-shaped seat. The bottom of the free end of the third cylinder is connected to a third guide shaft through a support arm. The third guide shaft is parallel to the third cylinder and is movably placed in a guide seat. The guide seat is located on the first U-shaped seat. A second transducer is installed at the bottom of the free end of the third cylinder. A second amplitude rod is provided below the second transducer. The bottom of the second amplitude rod is connected to a strip-shaped blade holder. A cutter is detachably provided below the strip-shaped blade holder.

[0012] Preferably, the transmission device includes a first transmission roller disposed in the second mounting port, with both ends of the first transmission roller rotatably mounted in bearing seats, the bearing seats being mounted below the support platform, one end of the first transmission roller being connected to a second motor, the second motor being connected to the support platform, a second transmission roller being disposed parallel above the first transmission roller, both ends of the second transmission roller being rotatably mounted in a third U-shaped seat, a second cylinder being mounted in the middle of the top surface of the third U-shaped seat, the top of the second cylinder being connected to the second U-shaped frame, and at least one second guide shaft being disposed parallel to both sides of the second cylinder, the top of the second guide shaft being movably placed within the second U-shaped frame.

[0013] Preferably, one end of the second drive roller and one end of the first drive roller are provided with gears, and when the two gears mesh, the second drive roller and the first drive roller are in close contact.

[0014] Preferably, the support platform has a material discharge port on the side near the cutter, and the edge of the material discharge port is fitted with the cutter with a clearance.

[0015] Compared with the prior art, in the use of this utility model, the fabric to be pressed passes over the pressing plate, and the strip pressing seat can rotate with the rotation of the support roller. When the strip pressing seat rotates once, the strip pressing seat contacts the pressing plate once. Since the pressing plate continuously generates ultrasonic vibration, the position where the fabric strip pressing seat contacts the pressing plate can be ultrasonically welded. This process is continuous and can quickly press and weld the folded fabric. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1This is a structural schematic diagram of one side of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure on the other side of this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of this utility model after the shearing device is removed.

[0020] Figure 4 for Figure 3 The main view.

[0021] Figure 5 This is a schematic diagram of the shearing device of this utility model.

[0022] Figure 6 This is a schematic diagram of the structure where the fabric is pressed together under the strip-shaped pressing seat.

[0023] Figure 7 This is a diagram of a face mask.

[0024] In the diagram: 1. Support platform; 2. First U-shaped frame; 3. Opening; 4. First motor; 5. Connecting seat; 6. First guide shaft; 7. Second guide shaft; 8. Second U-shaped frame; 9. First U-shaped seat; 10. Second motor; 11. Material discharge port; 12. Cutter; 13. Support leg; 14. First cylinder; 15. Second U-shaped seat; 16. Strip-shaped clamping seat; 17. Ring seat; 18. First mounting port; 19. Support; 20. Support wheel; 21. First luffing rod; 22. First transducer; 23. Third U-shaped seat; 24. Mounting plate; 25. Support roller; 26. Gear; 27. Strip cutter holder; 28. Second cylinder; 29. ​​First drive roller; 30. Second mounting port; 31. Third guide shaft; 32. Third cylinder; 33. Second transducer; 34. Second luffing rod; 35. Support arm; 36. Second drive roller; 37. Pressing plate. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Reference Figures 1 to 5This utility model provides a technical solution: a pressing device for layering face masks, including a support platform 1, with several support legs 13 along the edge of the support platform 1, specifically, support legs 13 are set at the four corners of the bottom of the support platform 1. A first mounting opening 18 is provided at the top of the support platform 1, and a pressing plate 37 is provided in the center of the first mounting opening 18. The bottom of the pressing plate 37 is connected to an ultrasonic generator, which drives the pressing plate 37 to vibrate ultrasonically. Figure 3 As shown, the ultrasonic generator consists of a first amplitude transformer 21 installed at the bottom of the pressing plate 37. The bottom of the first amplitude transformer 21 is connected to the first transducer 22. The first transducer 22 is mounted on the mounting plate 24. The mounting plate 24 is located below the support platform 1 and its two ends are connected to the support legs 13 respectively. Therefore, when the first transducer 22 is working, it can drive the pressing plate 37 to vibrate through the first amplitude transformer 21. The first transducer 22 is connected to the ultrasonic generator through a wire.

[0027] like Figure 3 and Figure 4 As shown, a support roller 25 is provided above the pressing plate 37. Both ends of the support roller 25 are provided with annular seats 17. The surface of the support roller 25 is also provided with strip-shaped pressing seats 16 parallel to its axis. Both ends of the support roller 25 are rotatably mounted within a second U-shaped seat 15, which is connected to a lifting device. Figure 3 As shown, the lifting device includes a first cylinder 14 installed in the middle of the top surface of the second U-shaped seat 15. The top of the first cylinder 14 is connected to the first U-shaped frame 2. The opening of the first U-shaped frame 2 faces downward and its bottom ends are fixed to the support platform 1 respectively. The two sides of the first cylinder 14 are provided with a first guide shaft 6. The bottom of the first guide shaft 6 is connected to the second U-shaped seat 15, and the top of the first guide shaft 6 is movably placed inside the first U-shaped frame 2. The top of the first guide shaft 6 is connected through a connecting seat 5. It should be noted that the first guide shaft 6 can play a guiding and supporting role when the second U-shaped seat 15 moves up and down, making the up and down movement of the second U-shaped seat 15 more stable.

[0028] In use, the lifting device moves the support roller 25 onto the pressing plate 37, and one end of the support roller 25 is driven to rotate by the driving device. Figure 3 As shown, the driving device includes a first motor 4 mounted on the connecting seat 5. The first motor 4 has sprockets on its shaft and one end of the support roller 25. The two sprockets are connected by a transmission chain. The transmission chain is placed in the opening 3 at the top of the first U-shaped frame 2. The opening 3 can prevent the transmission chain from contacting the second U-shaped frame 8. When the first motor 4 rotates, it can drive the support roller 25 to rotate through the transmission chain. Specifically, when the driving device drives the support roller 25 to rotate above the pressing plate 37, the strip pressing seat 16 can intermittently contact the pressing plate 37.

[0029] In order to provide more stable support for the support roller 25, such as Figure 3 and Figure 4 As shown, support wheels 20 corresponding to annular seats 17 are respectively provided at both ends of the first mounting port 18. The shaft in the middle of the support wheel 20 is rotatably mounted in the support 19. The support 19 is installed on both sides below the first mounting port 18. When the support roller 25 descends, the two annular seats 17 are respectively placed on the support wheels 20. At this time, when the first motor 4 drives the support roller 25 to rotate, the strip-shaped pressing seat 16 also rotates. When the strip-shaped pressing seat 16 rotates to the lowest position, the strip-shaped pressing seat 16 is in contact with the pressing plate 37. In this way, the two ends of the support roller 25 can be supported by the support wheels 20, and the problem of excessive pressure when the annular seats 17 directly contact the pressing plate 37 can be avoided.

[0030] It should be emphasized that the pressing device proposed in this application is only a part of the mask production equipment; the fabric feeding device, stacking device, and folding device located in front of this device are not shown. Figure 6 As shown, the fabric after the folding device needs to be pressed between the pressing plate 37 and the support roller 25. Since the support roller 25 rotates at a uniform speed, the strip pressing seat 16 contacts the pressing plate 37 once after the support roller 25 rotates one revolution. The contact point between the strip pressing seat 16 and the pressing plate 37 can be ultrasonically welded. The welding position is as follows. Figure 6 The welding location indicated by the middle arrow A is an area with a certain width.

[0031] It should be noted that, as Figure 3 As shown, the pressing plate 37 is in contact with the strip pressing seat 16, but the pressing plate 37 is not in contact with the surface of the support roller 25. Therefore, the strip pressing seat 16 can only directly contact the pressing plate 37 when it rotates one revolution. The distance that the fabric travels from the surface of the pressing plate 37 is just right to match the size of the mask.

[0032] The support roller 25 can move up and down under the drive of the first cylinder 14. When the support roller 25 descends, it can press the fabric. When the support roller 25 rises, it is convenient to put the material on the pressing plate 37.

[0033] Based on the above embodiments, a further improvement is needed: the support roller 25 is provided with a shearing device on its discharge side. This shearing device is used to cut the pressing area of ​​the fabric, such as... Figure 6 As shown, the cutting area is in the middle of the welding position, specifically as follows: Figure 6 As indicated by arrow B, only by cutting the fabric according to the position indicated by arrow B can the desired shape be achieved. Figure 7 The same mask, this mask is the common disposable mask in daily life;

[0034] like Figure 5As shown, the shearing device includes a second mounting port 30 located on one side of the first mounting port 18. A second U-shaped frame 8 is located at the top of the second mounting port 30, with its opening facing downwards and both ends fixed to the support platform 1. A transmission device is installed within the second U-shaped frame 8 and the second mounting port 30. This transmission device is essential, as it allows the fabric emerging from the surface of the pressing plate 37 to be steadily advanced forward.

[0035] Next, a first U-shaped seat 9 is installed on the side of the second U-shaped frame 8 away from the first mounting port 18. A vertically downward third cylinder 32 is provided in the middle of the side of the first U-shaped seat 9. The bottom of the free end of the third cylinder 32 is connected to the third guide shaft 31 through the support arm 35. The third guide shaft 31 is parallel to the third cylinder 32 and is movably placed in the guide seat. The guide seat is set on the first U-shaped seat 9. The third guide shaft 31 can make the up and down movement of the third cylinder 32 more stable and prevent unnecessary rotation of the free end of the third cylinder 32.

[0036] A second transducer 33 is installed at the bottom of the free end of the third cylinder 32. Below the second transducer 33 is a second amplitude transformer 34, the bottom of which is connected to a strip-shaped cutter holder 27. A cutter 12 is detachably mounted below the strip-shaped cutter holder 27, specifically by bolts securing the cutter 12 to the strip-shaped cutter holder 27. The second transducer 33 is connected to an ultrasonic generator via a wire. When the second transducer 33 operates, it transmits vibrations to the cutter 12 through the second amplitude transformer 34, causing the cutter 12 to form an ultrasonic cutting blade. The fabric, transmitted through the transmission device, moves to the area below the cutter 12. Driven by the third cylinder 32, the cutter 12 moves up and down at a set frequency. When the cutter 12 contacts the fabric, it cuts the fabric from... Figure 6 Cut off at the point indicated by arrow B.

[0037] The transmission device will be described in detail below, such as Figure 5As shown, the transmission device includes a first transmission roller 29 disposed within the second mounting port 30. Both ends of the first transmission roller 29 are rotatably mounted in bearing seats, which are mounted below the support platform 1. One end of the first transmission roller 29 is connected to a second motor 10, which is also connected to the support platform 1, allowing the second motor 10 to drive the first transmission roller 29 to rotate. A second transmission roller 36 is disposed parallel above the first transmission roller 29. Both ends of the second transmission roller 36 are rotatably mounted within a third U-shaped seat 23. A second cylinder 28 is mounted in the center of the top surface of the third U-shaped seat 23. The top of the second cylinder 28 is connected to the second U-shaped frame 8. At least one second guide shaft 7 is also disposed parallel to both sides of the second cylinder 28. The top of the second guide shaft 7 is movably positioned within the second U-shaped frame 8. When the second cylinder 28 extends or retracts, it drives the second transmission roller 36 to move up and down. When the second transmission roller 36 rises, it facilitates the placement of material above the first transmission roller 29. When the second transmission roller 36 descends, it presses the fabric tightly, thus steadily advancing the fabric forward.

[0038] To prevent the second drive roller 36 from slipping, gears 26 are provided at one end of the second drive roller 36 and one end of the first drive roller 29. When the two gears 26 mesh, the second drive roller 36 and the first drive roller 29 are tightly fitted together. Therefore, the rotation of the first drive roller 29 can drive the second drive roller 36 to rotate through the gears 26, thereby steadily advancing the fabric forward.

[0039] Based on the above embodiments, what needs further optimization is that the support platform 1 is provided with a material drop port 11 on the side near the cutter 12, and the edge of the material drop port 11 is fitted with the cutter 12 with a gap, so that the cut fabric can fall from the material drop port.

[0040] Based on the above embodiments, it should be further explained that since the pressing plate 37 is located between the two annular seats 17, the annular seats and the pressing plate 37 do not contact each other. Only when the strip pressing seat contacts the pressing plate 37 will the support roller 25 contact the pressing plate 37. Therefore, during the time when the strip pressing seat 16 is separated from the pressing plate 37, the pressing plate 37 will not transmit vibration to the strip pressing seat 16.

[0041] Based on the above embodiments, it should be further explained that in actual application, the pressing device proposed in this application should be connected to the control system of the mask production line, such as a PLC control system. The mask production line also usually uses a PLC control system, which plays a core role in the automated control of the mask production line. That is, the PLC control system is connected to the first motor 4, the second motor 10, the first cylinder 14, the second cylinder 28, the third cylinder 32 and the ultrasonic generator respectively.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pressing device for layering face masks, comprising a support platform (1), the support platform (1) having a plurality of support legs (13) along its edge, and a first mounting opening (18) at the top of the support platform (1), characterized in that, The first mounting port (18) has a pressing plate (37) in the middle, and the bottom of the pressing plate (37) is connected to the ultrasonic generator. A support roller (25) is provided above the pressing plate (37). Both ends of the support roller (25) are provided with annular seats (17). The surface of the support roller (25) is also provided with a strip-shaped pressing seat (16) parallel to its axis. Both ends of the support roller (25) are rotatably installed in the second U-shaped seat (15). The second U-shaped seat (15) is connected to the lifting device. The lifting device drives the support roller (25) to be placed on the pressing plate (37). One end of the support roller (25) is driven to rotate by the driving device, which drives the support roller (25) to rotate above the pressing plate (37), causing the strip-shaped pressing seat (16) to intermittently contact the pressing plate (37); and, It also includes a shearing device located on the discharge side of the support roller (25).

2. The pressing device for mask layering as described in claim 1, characterized in that, The ultrasonic generator includes a first amplitude transformer (21) installed at the bottom of the pressing plate (37), the bottom of the first amplitude transformer (21) is connected to a first transducer (22), the first transducer (22) is mounted on a mounting plate (24), the mounting plate (24) is located below the support platform (1) and its two ends are respectively connected to the support legs (13).

3. The pressing device for mask layering as described in claim 1, characterized in that, The first mounting port (18) has support wheels (20) at both ends corresponding to the annular seat (17). The shaft in the middle of the support wheel (20) is rotatably installed in the support (19). The support (19) is installed on both sides below the first mounting port (18). Two annular seats (17) are placed on the support wheel (20) respectively. When the strip pressing seat (16) rotates to the bottom, the strip pressing seat (16) is in contact with the pressing plate (37).

4. The pressing device for mask layering as described in claim 3, characterized in that, The lifting device includes a first cylinder (14) installed in the middle of the top surface of the second U-shaped seat (15). The top of the first cylinder (14) is connected to the first U-shaped frame (2). The opening of the first U-shaped frame (2) faces downward and its bottom ends are fixed to the support platform (1) respectively. The first cylinder (14) has a first guide shaft (6) arranged parallel to both sides. The bottom of the first guide shaft (6) is connected to the second U-shaped seat (15), and the top of the first guide shaft (6) is movably placed inside the first U-shaped frame (2). The top of the first guide shaft (6) is connected through the connecting seat (5).

5. The pressing device for mask layering as described in claim 4, characterized in that, The drive device includes a first motor (4) mounted on the connecting seat (5). The first motor (4) has sprockets on its shaft and one end of the support roller (25). The two sprockets are connected by a transmission chain, which is placed in the opening (3) at the top of the first U-shaped frame (2).

6. The pressing device for mask lamination as described in any one of claims 1-5, characterized in that, The shearing device includes a second mounting port (30) located on one side of the first mounting port (18). The top of the second mounting port (30) is provided with a second U-shaped frame (8). The second U-shaped frame (8) has its opening facing downward and its two ends are respectively fixed to the support platform (1). A transmission device is provided inside the second U-shaped frame (8) and the second mounting port (30); The second U-shaped frame (8) is equipped with a first U-shaped seat (9) on the side away from the first mounting port (18). The first U-shaped seat (9) has a vertically downward third cylinder (32) in the middle of its side. The bottom of the free end of the third cylinder (32) is connected to the third guide shaft ((31)) through the support arm (35). The third guide shaft ((31) is parallel to the third cylinder (32) and is movably placed in the guide seat. The guide seat is set on the first U-shaped seat (9). The bottom of the free end of the third cylinder (32) is equipped with a second transducer (33), and a second amplitude rod (34) is provided below the second transducer (33). The bottom of the second amplitude rod (34) is connected to the strip-shaped knife holder (27), and a cutter (12) is detachably provided below the strip-shaped knife holder (27).

7. The pressing device for mask layering as described in claim 6, characterized in that, The transmission device includes a first transmission roller (29) disposed in the second mounting port (30), the two ends of the first transmission roller (29) are respectively rotatably mounted in the bearing seat, the bearing seat is installed below the support platform (1), one end of the first transmission roller (29) is connected to the second motor (10), and the second motor (10) is connected to the support platform (1); A second transmission roller (36) is arranged parallel above the first transmission roller (29). The two ends of the second transmission roller (36) are rotatably installed in the third U-shaped seat (23). A second cylinder (28) is installed in the middle of the top surface of the third U-shaped seat (23). The top of the second cylinder (28) is connected to the second U-shaped frame (8). At least one second guide shaft (7) is arranged parallel on both sides of the second cylinder (28). The top of the second guide shaft (7) is movably placed in the second U-shaped frame (8).

8. The pressing device for mask layering as described in claim 7, characterized in that, One end of the second drive roller (36) and one end of the first drive roller (29) are provided with gears (26). When the two gears (26) mesh, the second drive roller (36) and the first drive roller (29) fit together tightly.

9. The pressing device for mask layering as described in claim 8, characterized in that, The support platform (1) has a material discharge port (11) on the side near the cutter (12), and the edge of the material discharge port (11) is fitted with the cutter (12) with a clearance.

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