A mask welding valve machine and a mask production process

Abstract

The present invention discloses a mask valve welding machine and a mask production process, including a valve welding die, an ultrasonic generator, a third pushing device and a bearing plate. The valve welding die is located below the ultrasonic generator. The third pushing device can push the valve welding die to move upward. The bearing plate is located between the valve welding die and the ultrasonic generator, and a valve passing hole is formed in the bearing plate. Using this valve welding machine in combination with the mask production process can greatly improve the production efficiency of masks with breathing valves.

Description

Technical Field

[0001] The present invention relates to the technical field of mask production devices, and particularly relates to a mask valve welding machine and a mask production process. Background Art

[0002] For masks with breathing valves, the production method is generally to first make the outer shape of the mask, and then manually weld the breathing valve. This working method limits the production efficiency of mask manufacturers. Summary of the Invention

[0003] Aiming at the defects in the prior art, the present invention provides a mask valve welding machine and a mask production process. Using this valve welding machine in combination with the mask production process can greatly improve the production efficiency of masks with breathing valves.

[0004] A mask valve welding machine includes a valve welding die, an ultrasonic generator, a third pushing device, and a bearing plate. The valve welding die is located below the ultrasonic generator. The third pushing device can push the valve welding die upward. The bearing plate is located between the valve welding die and the ultrasonic generator, and a valve passing hole is opened on the bearing plate.

[0005] To solve the above problems, the inventor designed this technical solution. This technical solution includes a valve welding die, an ultrasonic generator, and a third pushing device. The valve welding die is located below the ultrasonic generator. The third pushing device can push the valve welding die up and down. When in use, when the mask machine passes the cloth, the cloth passes through the space between the ultrasonic generator and the valve welding die. The breathing valve is placed in the valve welding die. Then, the third pushing device is started to drive the valve welding die upward until the breathing valve in the valve welding die contacts the cloth and is welded by ultrasonic waves. After welding, the third pushing device moves downward, and the valve welding die drops downward and disengages from the breathing valve. In this way, the breathing valve can be installed when the mask machine passes the cloth, without affecting the other steps of the mask machine for producing masks, greatly improving the production efficiency of masks. When the cloth passes through during mask production, since the cloth needs to pass through the space between the ultrasonic generator and the valve welding die, the cloth will sag due to its own gravity when passing the cloth. This causes the situation of cloth wrinkles when the breathing valve contacts the cloth upward for welding. The cloth wrinkles may partially enclose the breathing valve, resulting in poor mask quality. In this technical solution, a bearing plate is provided, and a valve passing hole is opened on the bearing plate. When in use, the bearing plate supports the cloth to keep the cloth in a horizontal state. The breathing valve passes through the valve passing hole and contacts the cloth, preventing cloth wrinkles during valve welding and producing defective products.

[0006] Preferably, it further includes a carrier plate lifting cylinder, the output end of the carrier plate lifting cylinder is connected to the carrier plate. By connecting the output end of the carrier plate lifting cylinder to the carrier plate, the height of the carrier plate can be adjusted, so that the height of the carrier plate can be finely adjusted according to the intensity of the ultrasonic wave emitted by the ultrasonic generator, keeping the distance between the carrier plate and the ultrasonic wave always at the distance with the best welding effect, and making the effect of welding the valve better.

[0007] Preferably, it further includes a connecting plate, the welding valve die is slidably arranged on the connecting plate, and the output shaft of the third pushing device can contact the welding valve die to push the welding valve die to move up and down on the connecting plate. In this technical solution, the connecting plate is provided, the welding valve die is slidably arranged on the connecting plate, and the output shaft of the third pushing device can contact the welding valve die, so as to realize that the third pushing device can push the welding valve die to move up and down.

[0008] Preferably, it further includes a second pushing device, the second pushing device is connected to the connecting plate, and the second pushing device can drive the connecting plate to move up and down. After the output shaft of the third pushing device descends, the welding valve die is separated from the welded breathing valve by gravity. At this time, since the breathing valve may hang on the welding valve die, it is impossible to separate the welding valve die from the breathing valve only by the gravity of the welding valve die. In this technical solution, the second pushing device is provided, the second pushing device is connected to the connecting plate, and the second pushing device can drive the connecting plate to move up and down. When the welding valve die and the breathing valve need to be separated, the second pushing device moves to drive the connecting plate to move downward, and then drives the welding valve die to move downward, applying a downward force to the welding valve die, so as to facilitate the separation of the welding valve die from the breathing valve.

[0009] Preferably, it further includes a rotating device, the rotating device is connected to the output shaft of the second pushing device, the output shaft of the rotating device is connected to the connecting plate, and two or more welding valve dies are arranged on the connecting plate, and the two or more welding valve dies are circumferentially distributed along the axis of the connecting plate. Using one welding valve die for welding the breathing valve has low efficiency. In this technical solution, two or more welding valve dies are arranged on the connecting plate, and the rotating device is used to drive the two or more welding valve dies to be used alternately, improving the welding valve efficiency.

[0010] Preferably, it further includes an over-valve mechanism. The over-valve mechanism includes a support frame, on which two over-valve baffles are arranged. Slide grooves are provided on the inner walls of the over-valve baffles, and the flanges on the breathing valve can be embedded into the slide grooves. A first pushing device is fixed on the support frame. The over-valve baffle is located above one of the welding valve molds, and the first pushing device can push the breathing valve on the over-valve baffle into the welding valve mold. Manually adding the breathing valve to the welding valve mold has low efficiency. In this technical solution, the over-valve mechanism is provided. After the breathing valve is transported to the over-valve baffle by the upper-valve mechanism, the first pushing device is used to push the breathing valve downward, so that the flange of the breathing valve is deformed and separated from the over-valve baffle, and then enters the welding valve mold to realize automatic valve loading.

[0011] Preferably, a push block is connected to the output end of the third pushing device. In this technical solution, a push block is connected to the output end of the third pushing device. The push block has a large area, and the contact pushing effect with the welding valve mold is better.

[0012] A mask production process includes a mask welding valve machine, and the steps are as follows:

[0013] A. Pass the fabric through the space between the welding valve mold and the ultrasonic generator, and place the breathing valve into the welding valve mold;

[0014] B. Start the third pushing device to push the welding valve mold upward so that the breathing valve contacts the fabric and is fixed by ultrasonic welding;

[0015] C. After welding is completed, the output end of the third pushing device moves downward, and the welding valve mold freely falls to separate from the welded breathing valve.

[0016] In this technical solution, the fabric is passed through the space between the welding valve mold and the ultrasonic generator, the breathing valve is placed into the welding valve mold, then the third pushing device is started to push the welding valve mold upward so that the breathing valve contacts the fabric and is fixed by ultrasonic welding. After welding is completed, the output end of the third pushing device moves downward, and the welding valve mold freely falls to separate from the welded breathing valve. In this way, the welding of the breathing valve is realized during the fabric passing process of mask production, without affecting the rest of the operations of the mask machine production, and improving the production efficiency of the mask.

[0017] Preferably, step B includes the following steps:

[0018] B1. Use the upper-valve mechanism to place the breathing valve on the over-valve baffle and push the breathing valve above one of the welding valve molds;

[0019] B2. Use the first pushing device to push the breathing valve into the welding valve mold below it;

[0020] B3. Start the rotating device to drive the connecting plate to rotate, so that the welding valve mold with the breathing valve moves under the ultrasonic generator.

[0021] In this technical solution, more than two welding valve dies are arranged on the connecting plate, and a rotating device is used to drive the alternate use of more than two welding valve dies, so as to improve the welding valve efficiency.

[0022] Preferably, when the output end of the third pushing device moves downward in step C, the second pushing device starts to drive the connecting plate to move downward.

[0023] In this technical solution, a second pushing device is arranged. When the welding valve die is separated from the breathing valve, the second pushing device provides assistance to facilitate the separation of the welding valve die from the breathing valve.

[0024] Preferably, fabric punching is performed before step A. In this technical solution, the fabric is punched before the breathing valve is welded, and only the outer shape of the mask needs to be made in the subsequent mask production, further improving the production efficiency of the mask.

[0025] The beneficial effects of the present invention are embodied in: This technical solution includes a welding valve die, an ultrasonic generator, and a third pushing device. The welding valve die is located below the ultrasonic generator, and the third pushing device can push the welding valve die to move up and down. When in use, when the mask machine passes the fabric, the fabric passes through the space between the ultrasonic generator and the welding valve die, the breathing valve is placed in the welding valve die, and then the third pushing device is started to drive the welding valve die to move upward until the breathing valve in the welding valve die contacts the fabric and is ultrasonically welded. After welding, the third pushing device moves downward, and the welding valve die drops downward and is separated from the breathing valve. In this way, the breathing valve can be installed when the mask machine passes the fabric, without affecting the other steps of the mask machine for producing masks, greatly improving the production efficiency of the mask. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. 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 actual scale.

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is the front view of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the breathing valve in the present invention.

[0030] In the attached drawings, 1 - breathing valve, 2 - valve - passing baffle, 3 - valve - pushing plate, 4 - first pushing device, 5 - guide rail, 6 - valve - welding die, 7 - connecting plate, 8 - rotating shaft, 9 - stop block, 10 - induction piece, 11 - rotating device, 12 - second pushing device, 13 - guide post, 14 - pushing block, 15 - third pushing device, 16 - bottom plate, 17 - connecting shaft, 18 - top plate, 19 - fixed shaft, 20 - drag plate, 21 - ultrasonic generator, 22 - sliding groove, 23 - flange, 24 - bearing plate, 25 - bearing - plate lifting cylinder. Detailed implementation mode

[0031] The embodiments of the technical solutions of the present invention will be described in detail below with reference to the attached drawings. The following embodiments are only used to illustrate the technical solutions of the present invention more clearly, so they are only examples and cannot be used to limit the protection scope of the present invention.

[0032] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meanings understood by those skilled in the art to which the present invention belongs.

[0033] Embodiment 1

[0034] As Figure 1 、 Figure 2 and Figure 3 shown, in this embodiment, a mask valve - welding machine is provided, which includes a valve - welding die 6, an ultrasonic generator 21, a third pushing device 15 and a bearing plate 24. The valve - welding die 6 is located below the ultrasonic generator 21. The third pushing device 15 can push the valve - welding die 6 to move upward. The bearing plate 24 is located between the valve - welding die 6 and the ultrasonic generator 21, and a valve - passing hole is opened on the bearing plate 24.

[0035] This embodiment also includes a bearing - plate lifting cylinder 25, and the output end of the bearing - plate lifting cylinder 25 is connected to the bearing plate 24.

[0036] In order to facilitate the separation of the valve - welding die 6 from the breathing valve 1, this embodiment also includes a connecting plate 7. The valve - welding die 6 is slidably arranged on the connecting plate 7, and the output shaft of the third pushing device 15 can contact the valve - welding die 6 to push the valve - welding die 6 to move up and down on the connecting plate 7. This embodiment also includes a second pushing device 12, which is connected to the connecting plate 7, and the second pushing device 12 can drive the connecting plate 7 to move up and down.

[0037] In order to improve the welding efficiency of the breathing valve 1, this embodiment also includes a rotating device 11. The rotating device 11 is connected to the output shaft of the second pushing device 12, the output shaft of the rotating device 11 is connected to the connecting plate 7, and two or more valve - welding dies 6 are arranged on the connecting plate 7, and the two or more valve - welding dies 6 are circumferentially distributed along the axis of the connecting plate 7.

[0038] In order to improve the upper valve efficiency of the breathing valve 1 in the welding valve die 6, a valve passing mechanism is further included in this embodiment. The valve passing mechanism includes a support frame, on which two valve passing baffles 2 are arranged. A sliding groove 22 is provided on the inner wall of the valve passing baffle 2, and a flange 23 on the breathing valve 1 can be embedded in the sliding groove 22. A first pushing device 4 is fixed on the support frame. The valve passing baffle 2 is located above one of the welding valve dies 6, and the first pushing device 4 can push the breathing valve 1 on the valve passing baffle 2 into the welding valve die 6.

[0039] In this embodiment, a push block 14 is connected to the output end of the third pushing device 15.

[0040] This embodiment includes a bottom plate 16, a top plate 18 and a drag plate 20. The bottom plate 16 and the top plate 18 are connected by a plurality of connecting shafts 17. The drag plate 20 is arranged between the bottom plate 16 and the top plate 18 and is connected to the top plate 18 through a fixed shaft 19. The third pushing device 15 is fixed on the bottom plate 16. A through hole is formed on the drag plate 20. The ultrasonic generator 21 is arranged between the top plate 18 and the bottom plate 16, and the ultrasonic waves emitted by the ultrasonic generator 21 can pass through the through hole. The first pushing device 4, the second pushing device 12 and the third pushing device 15 are a first cylinder, a second cylinder and a third cylinder respectively.

[0041] In this embodiment, the second cylinder is fixed on the top plate 18. The output shaft of the second cylinder penetrates through the top plate 18. A bearing frame is connected to the output shaft of the second cylinder. A plurality of guide columns 13 are connected to the bearing frame. The plurality of guide columns 13 movably penetrate through the top plate 18, and the tops of the plurality of guide columns 13 are connected through a limiting plate. The rotating device 11 is a servo motor, which is fixed on the bearing frame. A rotating shaft 8 is connected to the output shaft of the servo motor, and the rotating shaft 8 is connected to the connecting plate 7. Two welding dies 6 are provided. An induction piece 10 is arranged on the bearing frame, and the induction piece 10 can detect whether the position of the welding die 6 is directly below the ultrasonic generator 21 to achieve precise positioning of the welding valve die 6.

[0042] In this embodiment, the bearing plate lifting cylinder 25 is fixed on the bottom plate 16.

[0043] In this embodiment, a sliding column is connected to the bottom of the welding valve die 6. The sliding column movably penetrates through the connecting plate 7, and a stop block 9 is connected to the bottom end of the sliding column. The push plate 14 can contact the stop block 9 to push the welding die 6 to move up and down.

[0044] In this embodiment, a valve pushing plate 3 is connected to the output shaft of the first cylinder. The valve pushing plate 3 can push the breathing valve 1 into the welding die 6. The area of the valve pushing plate 3 is larger than the end face of the output shaft of the first cylinder, and the effect of the valve pushing plate 3 in pushing the breathing valve 1 is better. The valve pushing plate 3 is connected with a guide rail, and the guide rail is slidably arranged on the support frame.

[0045] Example 2

[0046] This example further elaborates on the basis of Example 1. In this example, a mask production process is provided, including a mask valve welding machine, and the steps are as follows:

[0047] A. Pass the fabric through the space between the valve welding die 6 and the ultrasonic generator 21, and place the breathing valve 1 into the valve welding die 6;

[0048] B. Start the third pushing device 15 to push the valve welding die 6 upward so that the breathing valve 1 contacts the fabric and is fixed by ultrasonic welding;

[0049] C. After welding, the output end of the third pushing device 15 moves downward, and the valve welding die 6 drops and separates from the welded breathing valve 1.

[0050] In order to further improve the valve welding efficiency, step B in this example includes the following steps:

[0051] B1. Use the upper valve mechanism to place the breathing valve 1 on the valve passing baffle 2 and push the breathing valve 1 to move above one of the valve welding dies 6;

[0052] B2. Use the first pushing device 4 to push the breathing valve 1 into the valve welding die 6 below it;

[0053] B3. Start the rotating device 11 to drive the connecting plate 7 to rotate, so that the valve welding die 6 with the breathing valve 1 moves below the ultrasonic generator 21.

[0054] In order to facilitate the separation of the valve welding die 6 from the breathing valve 1, when the output end of the third pushing device 15 moves downward in step C of this example, the second pushing device 12 is started to drive the connecting plate 7 to move downward.

[0055] Before step A in this example, the fabric is perforated.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

Claims

1. A mask welding valve machine, characterized in that, It includes a valve welding die (6), an ultrasonic generator (21), a third pushing device (15) and a bearing plate (24). The valve welding die (6) is located below the ultrasonic generator (21). The third pushing device (15) can push the valve welding die (6) to move upward. The bearing plate (24) is located between the valve welding die (6) and the ultrasonic generator (21), and a valve passing hole is provided on the bearing plate (24). It further includes a connecting plate (7). The valve welding die (6) is slidably arranged on the connecting plate (7). The output shaft of the third pushing device (15) can contact the valve welding die (6) and push the valve welding die (6) to move up and down on the connecting plate (7). It further includes a second pushing device (12). The second pushing device (12) is connected to the connecting plate (7), and the second pushing device (12) can drive the connecting plate (7) to move up and down. It further includes a rotating device (11). The rotating device (11) is connected to the output shaft of the second pushing device (12), and the output shaft of the rotating device (11) is connected to the connecting plate (7). Two or more valve welding dies (6) are arranged on the connecting plate (7), and the two or more valve welding dies (6) are circumferentially distributed along the axis of the connecting plate (7). It further includes a valve passing mechanism. The valve passing mechanism includes a support frame. Two valve passing baffles (2) are arranged on the support frame. A sliding groove (22) is provided on the inner wall of the valve passing baffle (2). A flange (23) on the breathing valve (1) can be embedded in the sliding groove (22). A first pushing device (4) is fixed on the support frame. The valve passing baffle (2) is located above one of the valve welding dies (6), and the first pushing device (4) can push the breathing valve (1) on the valve passing baffle (2) into the valve welding die (6). A push block (14) is connected to the output end of the third pushing device (15).

2. A mask production process, including the mask valve welding machine as described in claim 1, and the steps are as follows: A. Pass the fabric through the space between the valve welding die (6) and the ultrasonic generator (21), and place the breathing valve (1) into the valve welding die (6). B. Start the third pushing device (15) to push the valve welding die (6) upward so that the breathing valve (1) contacts the fabric and is fixed by ultrasonic welding. C. After welding is completed, the output end of the third pushing device (15) moves downward, and the valve welding die (6) drops and separates from the welded breathing valve (1).

3. A mask production process according to claim 2, characterized in that, The step B includes the following steps: B1. Use the upper valve mechanism to place the breathing valve (1) on the valve passing baffle (2) and push the breathing valve (1) to move above one of the valve welding dies (6). B2. Use the first pushing device (4) to push the breathing valve (1) into the valve welding die (6) below it. B3. Start the rotating device (11) to drive the connecting plate (7) to rotate so that the valve welding die (6) with the breathing valve (1) moves below the ultrasonic generator (21).

4. A mask production process according to claim 3, characterized in that, When the output end of the third pushing device (15) moves downward in the step C, the second pushing device (12) is started to drive the connecting plate (7) to move downward.

5. A mask production process according to claim 3, characterized in that, Holes are punched in the fabric before the step A.

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