Edge-sealing and welding mechanism for mask machines

Abstract

This invention relates to the field of cutting mechanism technology for mask making machines. It includes two vertically arranged parallel guide plates, with a sealing plate horizontally fixed between them. The sealing plate includes a middle section with a horizontally opened flat conveying channel. The two side walls of the middle section have upwardly curved sections that gradually bend along the mask feeding direction until they are parallel to the middle section. An entry guide section connected to the flat conveying channel is fixedly connected to the entry end of the middle section, and an exit guide section connected to the flat conveying channel is fixedly connected to the exit end of the middle section. An avoidance hole communicating with its inner cavity is opened at the upper end of the exit guide section, and a folding roller is rotatably installed within the avoidance hole. This invention overcomes the problems of traditional sealing mechanisms for mask edge sealing, such as complex folding structures that occupy a large space and hinder compact layouts, and the inability to meet the needs of masks of different thicknesses when heat-sealing the mask edges.

Description

Technical Field

[0001] This utility model relates to the field of cutting mechanism technology, specifically to an edge-sealing and melting cutting mechanism for mask machines. Background Technology

[0002] A face mask is a hygiene product made of materials such as woven fabric, meltblown fabric, and nonwoven fabric, used to filter air entering the mouth and nose. An inner ear loop mask consists of the mask body, ear loops, and edging. The production process of an inner ear loop mask generally involves the ear loops wrapping around the mask body and then being welded to both sides of the mask body. The edging material roll is fed from the edging roll, welded to both sides of the mask body, and then cut.

[0003] A prior art patent (CN214027303U) discloses an edge-sealing welding mechanism connected to a power device; an edge-sealing cutting mechanism connected to the edge-sealing welding mechanism; a power device driving the edge-sealing welding mechanism to weld the edge onto the mask; an edge-sealing cutting mechanism moving with the edge-sealing welding mechanism to cut the edge; and a control system electrically connected to both the power device and the edge-sealing welding mechanism. By using a single power device to simultaneously drive the edge-sealing welding mechanism and the edge-sealing cutting device to weld and cut the mask edge, production continuity is good, and mask production efficiency can be improved.

[0004] The shortcomings of existing technology have gradually become apparent with use, mainly in the following aspects:

[0005] First, the existing melt-cut structure is complex when wrapping the edges of masks, and the complex structure occupies a lot of space, which affects the use of compact space layout.

[0006] Secondly, when heat-sealing the edges of masks, it cannot meet the needs of masks of different thicknesses.

[0007] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides an edge-sealing and melting mechanism for mask machines. This mechanism solves the problems of complex folding structures at the mask edges when using traditional melting and cutting structures for edge sealing, which occupy a large amount of space and affect the use of compact space layouts; and the inability to meet the needs of edge sealing of masks of different thicknesses when using heat-sealing to seal the mask edges.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] The edge-sealing and welding mechanism for a mask machine includes two vertically arranged guide plates, with an edge-sealing plate horizontally fixed between the two guide plates. The edge-sealing plate includes a middle section, within which a flat conveying channel is horizontally opened. The two side walls of the middle section are transitionally provided with bending sections, which gradually bend along the mask feeding direction to a state parallel to the middle section. The entry end of the middle section is fixedly connected to an entry guide section communicating with the flat conveying channel, and the exit end of the middle section is fixedly connected to an exit guide section communicating with the flat conveying channel. The upper end of the exit guide section has an avoidance hole communicating with its inner cavity, and a folding roller is rotatably installed within the avoidance hole.

[0011] As an optimized solution, a support plate is fixed to the area of ​​the two guide plates on the side away from the guide plates, and a hot-melt edge-wrapping assembly is arranged side by side between the support plate and the area away from the guide plates.

[0012] As an optimized solution, the hot melt edge-wrapping assembly includes a bottom heating roller rotatably mounted on the guide plate, and a top heating roller that moves vertically upwards and downwards is arranged in parallel above the bottom heating roller. Pressing protrusions are evenly distributed on the surface of the top heating roller.

[0013] As an optimized solution, a mounting plate is slidably provided on the guide plate along the vertical direction, and one end of the top heating roller is rotatably mounted on the mounting plate.

[0014] As an optimized solution, a support plate is fixedly connected to the upper end of the guide plate, and an adjustment knob is vertically threaded onto the support plate. The end of the adjustment knob is connected to the mounting plate through an elastic preload structure.

[0015] As an optimized solution, the elastic preload structure includes a top plate horizontally fixed to the upper end of the mounting plate, a vertical cylinder fixed to the top plate, a vertical column slidingly arranged inside the vertical cylinder, a turntable fixed to the upper end of the vertical column, the rotating end of the turntable being fixedly connected to the end of the adjustment knob, and a compression spring fitted on the vertical cylinder, the two ends of the compression spring abutting against the top plate and the fixed end of the turntable, respectively.

[0016] As an optimized solution, a rectangular sliding hole is provided on the side wall of the vertical cylinder along the vertical direction, and a slider is fixedly connected to the side wall of the vertical column and slidably constrained within the rectangular sliding hole.

[0017] As an optimized solution, a slider is fixed to the side wall of the mounting plate facing the guide plate, and a groove matching the slider is provided on the guide plate.

[0018] As an optimized solution, one end of the pressure roller is rotatably mounted on the guide plate.

[0019] As an optimized solution, a cutter is provided on the other side of the pallet, which moves vertically upwards and downwards.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] When binding the edges of a mask, the mask is inserted along the guide section. When the mask edge enters the middle section, the two side walls of the middle section have upward bending sections that gradually bend along the mask's feeding direction until they are parallel to the middle section. Therefore, as the mask enters, the edge gradually folds upward under the action of the bending sections, forming a bent state with the mask body. Then, the bent mask enters the exit guide section, where an avoidance hole is provided at the upper end, connecting to its inner cavity. A folding roller rotates inside the avoidance hole, which presses the bent edge of the mask to create a crease, facilitating the subsequent heat-sealing binding. By setting the bending section, the structure is simple, and the mask edge can be bent conveniently and quickly.

[0022] After the mask comes out of the guide section, the bottom edge of the mask is supported by the bottom heating roller, and the top heating roller contacts the bent edge of the mask. The top heating roller presses against the bottom heating roller to achieve heat-sealing of the bent edge of the mask.

[0023] Because the top heating roller is connected to an elastic pre-compression structure, the top heating roller is pressed towards the bottom heating roller by the elasticity of the compression spring, which improves the heat-melting pressure. The top heating roller can be raised and lowered by adjusting the knob. Together with the elastic pre-compression structure, it can meet the edge-wrapping needs of masks of different thicknesses. After the heat-melting, the mask continues to move under the support of the tray and is cut by the rising and falling cutter. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0025] Figure 1 This is a top view of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the bent section of this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the bent section of this utility model.

[0028] In the diagram: 1-Guide plate, 2-Middle section, 3-Bending section, 4-Entry guide section, 5-Exit guide section; 6-Avoidance hole; 7-Pressure roller; 8-Support plate; 9-Cutter; 10-Support plate; 11-Adjustment knob; 12-Flat conveyor channel; 13-Bottom heating roller; 14-Top heating roller; 15-Pressure protrusion; 16-Mounting plate; 17-Top plate; 18-Turntable; 19-Vertical cylinder; 20-Vertical column; 21-Compression spring; 22-Rectangular sliding hole; 23-Slider. Detailed Implementation

[0029] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0030] like Figures 1 to 3 As shown, the edge-sealing and welding mechanism for a mask machine includes two vertically arranged guide plates 1, with an edge-sealing plate horizontally fixed between the two guide plates. The edge-sealing plate includes a middle section 2, with a flat conveying channel 12 horizontally opened inside the middle section 2. The two side walls of the middle section 2 are provided with bending sections 3 in a transitional upward manner. The bending sections 3 gradually bend along the mask feeding direction to a state parallel to the middle section 2. The entry end of the middle section 2 is fixedly connected to an entry guide section 4 that communicates with the flat conveying channel 12, and the exit end of the middle section 2 is fixedly connected to an exit guide section 5 that communicates with the flat conveying channel 12. The upper end of the exit guide section 5 is provided with a clearance hole 6 that communicates with its inner cavity, and a pressure roller 7 is rotatably installed inside the clearance hole 6.

[0031] Two guide plates 1 are fixedly connected to a support plate 8 in the area away from the guide plate 1, and a hot melt edge-wrapping assembly is provided side by side between the support plate 8 and the area away from the guide plate 1.

[0032] The hot melt edge-wrapping assembly includes a bottom heating roller 13 rotatably mounted on a guide plate, and a top heating roller 14 that moves vertically upwards and downwards is arranged in parallel above the bottom heating roller 13. Pressing protrusions 15 are evenly distributed on the surface of the top heating roller 14.

[0033] A mounting plate 16 is slidably mounted on the guide plate 1 along its vertical edge, and one end of the top heating roller 14 is rotatably mounted on the mounting plate 16.

[0034] A support plate 10 is fixedly connected to the upper end of the guide plate 1. An adjustment knob 11 is vertically threaded onto the support plate 10. The end of the adjustment knob 11 is connected to the mounting plate 16 through an elastic preload structure.

[0035] The elastic preload structure includes a top plate 17 horizontally fixed to the upper end of the mounting plate 16, a vertical cylinder 19 fixed to the top plate 17, a vertical column 20 slidingly inside the vertical cylinder 19, a turntable 18 fixed to the upper end of the vertical column 20, the rotating end of the turntable 18 being fixedly connected to the end of the adjustment knob 11, and a compression spring 21 fitted on the vertical cylinder 19, with both ends of the compression spring 21 abutting against the top plate 17 and the fixed end of the turntable 18, respectively.

[0036] A rectangular sliding hole 22 is provided vertically on the side wall of the vertical cylinder 19, and a slider 23 is fixedly connected to the side wall of the vertical column 20 and is slidably constrained within the rectangular sliding hole 22.

[0037] A slider 23 is fixed to the side wall of the mounting plate 16 facing the guide plate 1, and a groove matching the slider 23 is provided on the guide plate 1.

[0038] One end of the pressure roller 7 is rotatably mounted on the guide plate 1.

[0039] A cutter 9 is provided on the other side of the pallet 8, which moves vertically upwards and downwards.

[0040] The heating methods of the top heating roller 14 and the bottom heating roller 13 are common in daily life. Since the specific structure is not an innovation of this solution, it will not be described in detail here.

[0041] The cutter 9 can be controlled by a telescopic cylinder to reciprocate and lift for cutting. Since the specific structure is not an innovation of this solution, it will not be described in detail here.

[0042] The working principle of this device is as follows:

[0043] When binding the edges of the mask, the mask is inserted into the guide section 4. When the edge of the mask enters the middle section 2, the two side walls of the middle section 2 are provided with bending sections 3. The bending sections 3 gradually bend along the mask feeding direction to be parallel to the middle section 2. Therefore, as the mask enters, the edge will gradually fold upward under the action of the bending sections 3 and form a bending state with the mask body. Then the bent mask enters the exit guide section 5. The upper end of the exit guide section 5 is provided with a clearance hole 6 that connects to its inner cavity. A folding roller 7 is rotatably provided in the clearance hole 6, which will press the bent edge of the mask to make creases, which is convenient for subsequent hot melt binding work.

[0044] After the mask comes out of the guide section 5, the bottom edge of the mask is supported by the bottom heating roller 13, and the top heating roller 14 contacts the bent edge of the mask. The top heating roller 14 presses against the bottom heating roller 13 to achieve heat-melting edge wrapping of the bent edge of the mask.

[0045] Because the top heating roller 14 is connected to an elastic pre-compression structure, the compression spring 21 is used to press the top heating roller 14 toward the bottom heating roller 13, thereby increasing the heat-melting compression force. The top heating roller 14 can be raised or lowered by adjusting the knob 11. In conjunction with the elastic pre-compression structure, it can meet the edge-wrapping needs of masks of different thicknesses. The heat-melted mask continues to move under the support of the support plate 8 and is cut by the lifting cutter 9.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A mask machine with a hemming and cutting mechanism, characterized in that: The mask includes two vertically arranged guide plates (1), and a edging plate is horizontally fixed between the two guide plates. The edging plate includes a middle section (2), and a flat conveying channel (12) is horizontally opened in the middle section (2). The two side walls of the middle section (2) are provided with a bending section (3) that gradually bends along the mask feeding direction to a state parallel to the middle section (2). The entry end of the middle section (2) is fixedly connected to an entry guide section (4) that communicates with the flat conveying channel (12). The exit end of the middle section (2) is fixedly connected to an exit guide section (5) that communicates with the flat conveying channel (12). The upper end of the exit guide section (5) is provided with a clearance hole (6) that communicates with its inner cavity. A pressure roller (7) is rotatably provided in the clearance hole (6).

2. The overlock melt-cut mechanism for a mask machine according to claim 1, characterized in that: Two guide plates (1) are fixed with a support plate (8) in the area away from the guide plate (1), and a hot melt edge-wrapping assembly is provided side by side between the support plate (8) and the area away from the guide plate (1).

3. The overlock melt-cut mechanism for a mask machine according to claim 2, characterized in that: The hot melt edge-wrapping assembly includes a bottom heating roller (13) rotatably mounted on the guide plate, and a top heating roller (14) that moves vertically upwards and downwards is arranged in parallel above the bottom heating roller (13). Pressing protrusions (15) are evenly distributed on the surface of the top heating roller (14).

4. The overlock melt-cut mechanism for a mask machine according to claim 3, characterized in that: The guide plate (1) is vertically slidably provided with an mounting plate (16), and one end of the top heating roller (14) is rotatably mounted on the mounting plate (16).

5. The overlock melt-cut mechanism for a mask machine according to claim 4, characterized in that: The upper end of the guide plate (1) is fixedly connected to a support plate (10), and an adjustment knob (11) is vertically threaded onto the support plate (10). The end of the adjustment knob (11) is connected to the mounting plate (16) through an elastic preload structure.

6. The overlock melt-cut mechanism for a mask machine according to claim 5, characterized in that: The elastic preload structure includes a top plate (17) horizontally fixed to the upper end of the mounting plate (16), a vertical cylinder (19) fixed to the top plate (17), a vertical column (20) slidably arranged inside the vertical cylinder (19), a turntable (18) fixed to the upper end of the vertical column (20), the rotating end of the turntable (18) being fixed to the end of the adjusting knob (11), and a compression spring (21) fitted on the vertical cylinder (19), the two ends of the compression spring (21) abutting against the fixed ends of the top plate (17) and the turntable (18) respectively.

7. The overgluing and cutting mechanism for a mask machine according to claim 6, characterized in that: A rectangular sliding hole (22) is provided vertically on the side wall of the vertical cylinder (19), and a slider (23) is fixedly connected to the side wall of the vertical column (20) and slidably constrained within the rectangular sliding hole (22).

8. The overlock melt-cut mechanism for a mask machine according to claim 4, characterized in that: A slider (23) is fixed to the side wall of the mounting plate (16) facing the guide plate (1), and a groove matching the slider (23) is provided on the guide plate (1).

9. The edging and fusing mechanism for a mask machine according to claim 1, characterized in that: One end of the pressure roller (7) is rotatably mounted on the guide plate (1).

10. The overgluing and cutting mechanism for a mask machine according to claim 2, characterized in that: A cutter (9) is provided on the other side of the pallet (8) and moves vertically upwards and downwards.

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