A sponge laminating machine

Abstract

The application discloses a sponge pasting machine, which is provided with a sponge roll for feeding unit, a sponge strip is wound on the sponge roll, the sponge strip comprises a sponge strip body which is cut into sections and a release paper layer which is adhered to the top side of the sponge strip body; a limiting feeding space for limiting and conveying the sponge strip is arranged on the workbench, a limiting feeding mechanism is arranged at the feeding end of the limiting feeding space, and a pressing station is arranged at the discharging end of the limiting feeding space; the peeling unit comprises a peeling sheet and a blowing unit, the blowing unit blows air to the peeling side of the peeling sheet, and a tensioning roller set for tensioning the release paper layer is arranged above the peeling sheet; the pasting unit presses the peeled sponge strip body on the surface of a product; and the output unit outputs the release paper layer. The sponge strip body can be precisely pasted on the mask, the working efficiency can be effectively improved, the pasting quality of the mask and the sponge strip body is improved, and the protection effect of the mask is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of sponge strip bonding equipment, and particularly to a sponge bonding machine. Background Technology

[0002] Masks are worn over the mouth and nose to filter the air entering the mouth and nose, blocking harmful gases, odors, and droplets from entering or exiting the wearer's mouth and nose. With the global spread of the novel coronavirus in 2020, masks, especially the more protective KN95 masks, have become essential protective equipment. To improve the mask's seal, a sponge strip is usually placed where the mask contacts the bridge of the nose. This sponge strip is generally made of sponge as a base material, coated on one (or both) with high-viscosity hot melt adhesive or oil-based glue, and separated by a release paper layer. It is sticky and easy to peel off; simply peel off the release paper layer and attach it to the mask.

[0003] Existing equipment for attaching sponge strips to face masks requires controlling a gripping robot to move to the sponge roll and clamp the beginning of the sponge strip. The sponge roll axis is fixed by a positioning rod. Then, the gripping robot moves in the opposite direction to pull the sponge strip to a set length. A cutting blade cuts the sponge strip, and then a pneumatic suction cup holds the strip in place. The worktable is then moved to bring the face mask close to the sponge strip, and the strip is fitted onto the mask surface. However, because sponge strips have good resilience, pulling them apart before cutting them easily results in irregular cuts and non-compliant dimensions, leading to poor sponge bonding quality. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides a sponge mounting machine with a simple and compact structure, which can improve the bonding effect of sponge strips.

[0005] To achieve the above objectives, the invention employs the following technical measures:

[0006] A sponge mounting machine includes a frame, a worktable, a feeding unit, a peeling unit, a bonding unit, and an output unit. The feeding unit contains a sponge roll, on which a long sponge strip is wound. The long sponge strip includes a segmented sponge strip body and a release paper layer adhered to the top side of the sponge strip body. The worktable is provided with a limiting feeding space for limiting the conveying of the long sponge strip. The feeding end of the limiting feeding space is provided with a limiting feeding mechanism, and the discharging end of the limiting feeding space is provided with a pressing station. The peeling unit includes a peeling sheet for peeling the release paper layer from the sponge strip body and an air blowing unit. The air blowing unit blows air towards the peeling side of the peeling sheet, and a tensioning roller group for tensioning the release paper layer is provided above the peeling sheet. The bonding unit presses the peeled sponge strip body onto the product surface. The output unit outputs the release paper layer.

[0007] Preferably, the feeding unit further includes a feeding roller mounting base fixedly installed on the frame, with both ends of the feeding roller detachably mounted on the feeding roller mounting base via pins, and the sponge roll sleeved on the feeding roller.

[0008] Preferably, the limiting feeding space is provided with side plates on both sides, and the discharge end of each side plate is connected to a limiting block for limiting the sponge strip. The limiting block is provided with an elongated hole, and a bolt is provided in the elongated hole. The distance between the two limiting blocks can be adjusted by adjusting the bolt at the fixed position of the elongated hole.

[0009] Preferably, the limiting feeding mechanism includes a corner roller assembly and a limiting roller, wherein the limiting roller is provided with a limiting groove for the sponge strip to pass through; the corner roller assembly includes a fixed roller, a pressure roller and a corner steel plate connecting the two ends of the fixed roller and the pressure roller, wherein the fixed roller is hinged to the feeding end of the limiting feeding space and the pressure roller is adapted to the limiting groove.

[0010] Preferably, the release sheet is disposed at the discharge end of the limiting feeding space, and the tensioning roller group includes a first tensioning roller and a second tensioning roller arranged vertically. The lowest point of the second tensioning roller and the highest point of the release sheet are on the same horizontal line. The sponge strip passes through the limiting feeding space, and the release paper layer of the sponge strip is folded around one side of the release sheet and sequentially rolled around the second tensioning roller and the first tensioning roller.

[0011] Preferably, the bonding unit is disposed above the pressing station. The bonding unit includes a pressing cylinder, an upper pressing block is connected to the telescopic rod of the pressing cylinder, and spring telescopic rods are provided on both sides of the upper pressing block. The spring telescopic rods are connected to a lower pressing block.

[0012] Preferably, the output unit includes a fixed tension transition roller group, an active tension transition roller, and a driven traction roller group. One end of the active tension transition roller is connected to a servo motor, and the other end of the active tension transition roller drives the driven traction roller group to rotate via a belt drive.

[0013] Preferably, the driven traction roller assembly includes an upper rubber roller and a lower rubber roller, the upper rubber roller and the lower rubber roller are connected by two meshing gears, and both ends of the upper rubber roller are connected to a lifting adjustment mechanism.

[0014] Preferably, the lifting and adjusting mechanism includes a slide block fixedly connected to the upper rubber roller, the slide block being slidably fitted with a slide rail, the upper end of the slide block being connected to a threaded fixing seat via a screw, and the top end of the screw being connected to a rotating block.

[0015] Preferably, the system also includes a dust cover installed on the workbench, wherein the dust cover has a flip cover on the side near the pressing station, and the flip cover has a handle.

[0016] The beneficial effects of the invention are:

[0017] 1. Compared with the prior art, the present invention uses pre-cut sponge strips into segments, which can ensure that the size of each segment of sponge strip is uniform, meeting the needs of mask production, and eliminating the need for cutting during mounting, which helps to improve mounting efficiency.

[0018] 2. In this invention, the long sponge strips on the sponge roll of the sponge mounting machine are limited and guided into the limited feeding space by the limiting feeding mechanism, ensuring accurate output of the long sponge strips. The sponge strip body is cut into segments according to specified dimensions, and the specifications of each segment are suitable for mask production requirements. After passing through the limited feeding space, the long sponge strip reaches the release sheet. At this time, the release paper layer of the long sponge strip is folded from one side of the release sheet to the other side. Because the sponge strip body is less flexible than the release paper layer, it will separate from the release paper layer on the peeling side of the peeling knife. The unit provides a separating impact force between the sponge strip and the release paper layer, preventing the sponge strip from failing to separate due to its adhesiveness. The separated release paper is output through the output unit, while the sponge strip continues to move forward to the top of the pressing station. At this point, the position of the mask to be bonded is aligned with the sponge strip, and the bonding unit fixes the mask at the pressing station and presses the sponge strip onto the mask. This accurately achieves the bonding of the sponge strip onto the mask, effectively improving work efficiency and the bonding quality between the mask and the sponge strip, thereby effectively improving the protective effect of the mask. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a sponge mounting machine according to the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of point A;

[0021] Figure 3 This is a front view of a sponge mounting machine according to the present invention;

[0022] Figure 4 This is a rear view of a sponge labeling machine according to the present invention;

[0023] Figure 5 This is a schematic diagram of the front structure of a sponge mounting machine according to the present invention;

[0024] Figure 6 This is a schematic diagram of the back structure of a sponge mounting machine according to the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of a sponge strip in a sponge mounting machine according to the present invention;

[0026] Figure 8 This is a schematic diagram of the pressing unit and output unit of a sponge mounting machine according to the present invention. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figures 1-8As shown, a sponge laminating machine includes a frame 1, a workbench 2, a feeding unit 3, a peeling unit 5, a laminating unit 6, and an output unit 7. The feeding unit 3 includes a sponge roll 31 on which a sponge strip 311 is wound. The sponge strip 311 includes a segmented sponge strip body and a release paper layer adhered to the top side of the sponge strip body. The sponge strip body is cut into multiple segments according to a specified size, and each segment corresponds to the production needs of a mask or other product. The workbench 2 is provided with a limiting feeding space 21 for limiting the conveying of the sponge strip 311, which can ensure the sponge... The long strip 311 is positioned and output, thereby improving the accuracy of the sponge strip body mounting; the feeding end of the limiting feeding space 21 is provided with a limiting feeding mechanism, and the discharging end of the limiting feeding space 21 is provided with a pressing station 23; the peeling unit 5 includes a peeling sheet 51 for peeling the release paper layer on the long sponge strip 311 from the sponge strip body and an air blowing unit 52, the air blowing unit 52 blows air towards the peeling side of the peeling sheet 51, and a tensioning roller group 53 for tensioning the release paper layer is provided above the peeling sheet 51; the bonding unit 6 presses the peeled sponge strip body onto the surface of the mask; the output unit 7 outputs the release paper layer.

[0029] In this embodiment, two symmetrically arranged mounting plates 24 are fixedly installed on the workbench 2, the output unit 7 is installed between the two mounting plates 24, and the bonding unit 6 is installed on the mounting plates 24.

[0030] More specifically, the feeding unit 3 also includes a feeding roller mounting base 32 fixedly installed on the frame 1. The two ends of the feeding roller 33 are respectively detachably installed on the feeding roller mounting base 32 through pins 34. The feeding roller 33 is provided with a conical sleeve 35, which can rotate at a fixed point on the feeding roller 33. The sponge roll 31 is sleeved on the conical sleeve 35 of the feeding roller 33.

[0031] The limiting feeding space 21 has side plates 211 on both sides. The discharge ends of the side plates 211 are connected to limiting blocks 212 for limiting the sponge strip 311. The limiting blocks 212 have elongated holes and bolts in the elongated holes. The two limiting blocks 212 are connected to the side plates 211 by the bolts. The distance between the two limiting blocks 212 can be adjusted by adjusting the bolts at the fixed position of the elongated holes. The limiting feeding mechanism includes a corner roller assembly 221 and a limiting roller 222. The limiting roller 222 is provided with a limiting groove 2221 for the sponge strip 311 to pass through. The corner roller assembly 221 includes a fixed roller 2211, a pressure roller 2212, and a corner steel plate 2213 connecting the two ends of the fixed roller 2211 and the pressure roller 2212. The fixed roller 2211 is hinged to the two side plates 211 at the feeding end of the limiting feeding space 21. The pressure roller 2212 is adapted to the limiting groove 2221. Under the action of force, the distance between the pressure roller 2212 and the limiting roller 222 can be adjusted. The sponge strip 311 passes between the limiting roller 222 and the pressure roller 2212. The pressure roller 2212 can limit the sponge strip 311 to pass through the limiting groove 2221. The sponge strip 311 passes over the fixed roller 2211 and then through the limiting feeding space. The two limiting blocks 212 are arranged on both sides of the peeling sheet 51 and are used to limit the contact on both sides of the sponge strip 311. This can prevent the sponge strip 311 from falling off the peeling sheet 51 and can also accurately control the discharge position of the sponge strip 311.

[0032] The release sheet 51 is disposed at the discharge end of the limiting feeding space 21. The air blowing unit 52 includes an air pump, a solenoid valve 521, and an air jet pipe 522. The air outlet pipe of the air pump is connected to the air jet pipe 522 through the solenoid valve. The air jet pipe 522 is used to blow air onto the release side of the release sheet 51. The tension roller group 53 includes a first tension roller 531 and a second tension roller 532 arranged vertically. The lowest point of the second tension roller 532 is on the same horizontal line as the highest point of the release sheet 51. The sponge strip 311 passes through the limiting feeding space 21. The release paper layer of the sponge strip 311 is folded 180° around the release side of the release sheet 51 and sequentially rolled around the second tension roller 532 and the first tension roller 531 before being output through the output unit 7. More specifically, the tensioning roller group 53 can tension and calibrate the moving direction of the sponge strip 311. The forces on the upper and lower sides of the peeling plate 51 are in opposite directions, which can provide force for the separation of the release paper layer of the sponge strip 311 from the sponge strip body. Since the flexibility of the sponge strip body of the sponge strip 311 is lower than that of the release paper layer, it will separate from the release paper layer on the peeling side of the peeling knife 51. The air blowing unit 52 can provide separation impact force for the sponge strip body and the release paper layer to prevent the sponge strip body from being unable to separate from the release paper layer due to stickiness. The separated release paper layer reaches the output unit 7 for output through the tensioning roller group 53, while the sponge strip body will continue to move forward to reach above the pressing station 23.

[0033] The bonding unit 6 is positioned above the pressing station 23. The bonding unit 6 includes a pressing cylinder 61, with an upper pressing block 62 connected to the telescopic rod of the pressing cylinder 61. Spring telescopic rods 63 are provided on both sides of the upper pressing block 62, and lower pressing blocks 64 are connected to the spring telescopic rods 63. The sponge strip body reaches the pressing station 23 under the action of the peeling knife 51. The mask is placed in the pressing station 23, with the part of the mask to be bonded facing downwards and aligned with the sponge strip body. The telescopic rod of the pressing cylinder 61 presses down, and the lower pressing block 64, under the action of the spring telescopic rod 63, first presses the mask to prevent it from shifting. Then, the upper pressing block 62, under the pressure of the pressing cylinder 61, presses down to firmly bond the sponge strip body onto the mask. More specifically, in this embodiment, the pressing station 23 is equipped with a photoelectric sensor, and the pressing unit 6 is fixedly connected between the two mounting plates 24 via a connecting rod.

[0034] The output unit 7 includes a fixed tension transition roller group 73, an active tension transition roller 72, and a driven traction roller group 71. The fixed tension transition roller group 73 includes two tensioning rollers arranged vertically and parallel to each other. The active tension transition roller 72 is located on one side of the fixed tension transition roller group 73. One end of the active tension transition roller 72 is connected to a servo motor 74, and the other end is connected to a pulley. The driven traction roller group 71 includes an upper roller 711 and a lower roller 712. One end of the lower roller 712 is also connected to a pulley. The two pulleys are wound with a belt. When the servo motor 74 drives the active tension transition roller 72 to rotate, the pulley at one end of the active tension transition roller 72 rotates, which in turn drives the lower roller 712 to rotate via belt transmission. The upper roller 711 and the lower roller 712 are connected by two meshing gears 713. When the lower roller 712 rotates, it can drive the upper roller 711 to rotate. In addition, both ends of the upper glue roller 711 are connected to lifting adjustment mechanisms 75. The lifting adjustment mechanisms 75 can drive the upper glue roller 711 to move up and down to adjust the distance between the upper glue roller 711 and the lower glue roller 712, so as to facilitate the passage of the sponge strip 311. The two lifting adjustment mechanisms 75 are respectively installed inside the two mounting plates 24. Each lifting adjustment mechanism 75 includes a slide block 751 fixedly connected to the upper glue roller 711. The slide block 751 is slidably fitted with a slide rail 752. The slide rail 752 is set on the mounting plate 24. The upper end of the slide block 751 is connected to a screw 754 through a ball bearing. The screw 754 is connected to a threaded fixing seat 753. The threaded fixing seat 753 is fixedly connected to the mounting plate 24. The top end of the screw 754 is connected to a rotating block 755. By rotating the rotating block 755, the screw 754 can be rotated, thereby driving the slide block 751 to slide up and down.

[0035] In this embodiment, the sponge mounting machine of the present invention also includes a dust cover 4 covering the workbench 2. The dust cover 4 has a flip cover 41 on the side near the pressing station 23. The flip cover 41 has a handle 42. The flip cover 41 is connected to the dust cover 4 by a hinge. The flip cover 41 can be opened by the handle 42, which is convenient and quick to open and facilitates machine adjustment.

[0036] In summary, the sponge mounting machine of the present invention has a simple structure. The long sponge strips on the sponge roll of the sponge mounting machine enter the limited feeding space after being limited and guided by the limited feeding mechanism, ensuring accurate output of the long sponge strips. The sponge strip body is cut into segments according to specified dimensions, and the specifications of each segment are suitable for mask production requirements. After passing through the limited feeding space, the long sponge strip reaches the release sheet. At this point, the release paper layer of the long sponge strip is folded from one side of the release sheet to the other. Because the sponge strip body is less flexible than the release paper layer, it will adhere to the release paper on the peeling side of the peeling knife. The layers are separated. The air blowing unit provides a separation impact force to the sponge strip body and the release paper layer, preventing the sponge strip body from failing to separate from the release paper layer due to its adhesiveness. The separated release paper is output through the output unit, while the sponge strip body continues to move forward to the pressing station. At this point, the position of the mask to be bonded is aligned with the sponge strip, and the bonding unit fixes the mask at the pressing station and presses the sponge strip body onto the mask. This precise bonding of the sponge strip body onto the mask effectively improves work efficiency and the bonding quality between the mask and the sponge strip body, thereby effectively improving the protective effect of the mask.

[0037] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the invention and should not be construed as limiting the specific implementation of the invention to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the inventive concept, and all such modifications and substitutions should be considered within the scope of protection of the invention.

Claims

1. A sponge mounting machine, comprising a frame (1), a worktable (2), a feeding unit (3), a peeling unit (5), a bonding unit (6), and an output unit (7), characterized in that, The feeding unit (3) includes a sponge roll (31), on which a sponge strip (311) is wound. The sponge strip (311) includes a sponge strip body cut into segments and a release paper layer adhered to the top side of the sponge strip body. The workbench (2) is provided with a limiting feeding space (21) for limiting the conveying of the sponge strip (311). Side plates (211) are provided on both sides of the limiting feeding space (21). The discharge ends of both side plates (211) are connected to limiting blocks (212) for limiting the sponge strip (311). The limiting block (212) is provided with an elongated hole. A bolt is provided in the elongated hole. By adjusting the bolt... The distance between the two limiting blocks (212) is adjusted by fixing them at the position of the elongated hole. The feeding end of the limiting feeding space (21) is provided with a limiting feeding mechanism, and the discharging end of the limiting feeding space (21) is provided with a pressing station (23). The limiting feeding mechanism includes a corner roller assembly (221) and a limiting roller (222). The limiting roller (222) is provided with a limiting groove (2221) for the sponge strip (311) to pass through. The corner roller assembly (221) includes a fixed roller (2211), a pressure roller (2212), and a corner steel plate (2213) connecting the two ends of the fixed roller (2211) and the pressure roller (2212). The fixed roller (2211) The pressure roller (2212) is adapted to the limiting groove (2221) at the feeding end of the limiting feeding space (21); the peeling unit (5) includes a peeling sheet (51) for peeling the release paper layer on the sponge strip (311) from the sponge strip body and an air blowing unit (52). The two limiting blocks (212) are arranged on both sides of the peeling sheet (51) to limit the contact on both sides of the sponge strip (311). The air blowing unit (52) blows air to the peeling side of the peeling sheet (51). A tensioning roller group (53) for tensioning the release paper layer is provided above the peeling sheet (51). The tensioning roller group (53) includes rollers arranged vertically. The first tension roller (531) and the second tension roller (532) are connected. The lowest point of the second tension roller (532) is on the same horizontal line as the highest point of the release sheet (51). The sponge strip (311) passes through the limiting feeding space (21). The release paper layer of the sponge strip (311) is folded 180° around the peeling side of the release sheet (51) and sequentially rolled around the second tension roller (532) and the first tension roller (531). The sponge strip body reaches the pressing station (23) under the action of the release sheet (51). The bonding unit (6) presses the peeled sponge strip body onto the product surface. The output unit (7) outputs the release paper layer. The bonding unit (6) is located above the pressing station (23). The bonding unit (6) includes a pressing cylinder (61). An upper pressing block (62) is connected to the telescopic rod of the pressing cylinder (61). Spring telescopic rods (63) are provided on both sides of the upper pressing block (62). A lower pressing block (64) is connected to the spring telescopic rods (63).

2. The sponge mounting machine according to claim 1, characterized in that, The feeding unit (3) further includes a feeding roller mounting seat (32) fixedly installed on the frame (1). The two ends of the feeding roller (33) are respectively detachably installed on the feeding roller mounting seat (32) by means of pins (34). The sponge roll (31) is sleeved on the feeding roller (33).

3. The sponge mounting machine according to claim 1, characterized in that, The output unit (7) includes a fixed tension transition roller group (73), an active tension transition roller (72), and a driven traction roller group (71). One end of the active tension transition roller (72) is connected to a servo motor (74), and the other end of the active tension transition roller (72) drives the driven traction roller group (71) to rotate via a belt drive.

4. A sponge mounting machine according to claim 3, characterized in that, The driven traction roller group (71) includes an upper rubber roller (711) and a lower rubber roller (712). The upper rubber roller (711) and the lower rubber roller (712) are connected by two meshing gears (713). Both ends of the upper rubber roller (711) are connected to lifting adjustment mechanisms (75).

5. A sponge mounting machine according to claim 4, characterized in that, The lifting and adjusting mechanism (75) includes a slide block (751) fixedly connected to the upper rubber roller (711), the slide block (751) is slidably fitted with a slide rail (752), the upper end of the slide block (751) is connected to a threaded fixing seat (753) through a screw (754), and the top end of the screw (754) is connected to a rotating block (755).

6. A sponge mounting machine according to any one of claims 1-5, characterized in that, It also includes a dust cover (4) covering the workbench (2), the dust cover (4) having a flip cover (41) on the side near the pressing station (23), and the flip cover (41) having a handle (42).

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