A meltblown cloth automatic forming device for cup-shaped masks, production line and process thereof

Abstract

The present application discloses an automatic meltblown cloth forming device, a production line and a process for a cup-shaped mask, wherein the automatic meltblown cloth forming device comprises a frame, a propulsion assembly and a forming assembly, the frame has an operating surface, and two guide rails are arranged in parallel on the operating surface; the propulsion assembly comprises a support plate and a fixed clamp, the fixed clamps are arranged on both sides of the support plate relatively along the long axis direction of the support plate and exist in pairs, a forming hole is opened on the support plate between the pair of fixed clamps, the propulsion assembly is slidably arranged on the two guide rails, and the movement direction of the propulsion assembly is the same as the long axis direction of the support plate; the forming assembly is arranged on the operating surface and located above the two guide rails, the forming assembly comprises a forming piece and two relatively arranged movable clamps, the forming piece and the movable clamps are arranged in sequence along the extension direction of the guide rails, the forming piece and the movable clamps can both move up and down above the guide rails, and the two movable clamps can be relatively far away from or close to each other.

Description

Technical Field

[0001] The present invention relates to the technical field of mask production equipment, and in particular to an automatic forming device for meltblown fabric of a cup-shaped mask, a production line and a process thereof. Background Art

[0002] Masks are daily hygiene products, whether for medical or household use, and they play an important role. Especially when respiratory infectious diseases strike, masks become scarce items. Masks are generally composed of three layers: an outer layer of non-woven fabric, a middle layer of meltblown fabric, and an outer layer of non-woven fabric.

[0003] Meltblown cloth is the core material of masks. It is mainly made of polypropylene, and the fiber diameter can reach 1 to 5 microns. Ultrafine fibers with many gaps, fluffy structure, good wrinkle resistance, and unique capillary structure increase the number and surface area of ​​fibers per unit area, so that meltblown cloth has good filtering, shielding, insulation and oil absorption. It can be used in air, liquid filter materials, isolation materials, absorption materials, mask materials, thermal insulation materials, oil absorption materials and wiping cloths.

[0004] In the process of meltblown cloth forming, due to the characteristics of meltblown cloth, hot melt method cannot be used for forming. Therefore, in the process of meltblown cloth forming, the center distance before and after forming is usually changed. The change of center distance will lead to larger errors and difficulty in forming during the forming process. Summary of the invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide a meltblown cloth automatic forming device, production line and process for a cup-shaped mask. When the meltblown cloth automatic forming device for a cup-shaped mask is formed into a cup-shaped mask, the problem of the center distance becoming smaller when the meltblown cloth is changed from a plane to a three-dimensional cup-shaped structure can be solved by moving the propulsion component forward and backward relative to the molding component. Similarly, a pair of relatively close movable clamps can also solve the problem of the center distance becoming smaller when the meltblown cloth is changed from a plane to a three-dimensional cup-shaped structure.

[0006] To achieve the above-mentioned objectives, in the first aspect, the present invention first proposes an automatic forming device for meltblown cloth of a cup-shaped mask, comprising a frame, a propulsion assembly and a molding assembly, the frame having an operating surface, and the operating surface having two guide rails arranged in parallel; the propulsion assembly comprises a support plate and a fixed clamp, the fixed clamps are arranged on both sides of the support plate relatively along the long axis direction of the support plate and exist in pairs, a molding hole is opened on the support plate between the paired fixed clamps, the propulsion assembly is slidably arranged on the two guide rails, and the movement direction of the propulsion assembly is the same as the long axis direction of the support plate; the molding assembly is arranged on the operating surface and located above the two guide rails, the molding assembly comprises a molding part and two relatively arranged movable clamps, the molding part and the movable clamps are arranged in sequence along the extension direction of the guide rails, the molding part and the movable clamps can both move up and down above the guide rails, and the two movable clamps can be relatively far away from or close to each other. When the meltblown cloth is formed into a cup-shaped mask, the problem of the center distance becoming smaller when the meltblown cloth is changed from a plane to a three-dimensional cup-shaped structure can be solved by moving the propulsion component forward and backward relative to the molding component. Similarly, a pair of relatively close movable clamps can also solve the problem of the center distance becoming smaller when the meltblown cloth is changed from a plane to a three-dimensional cup-shaped structure. When the movable clamps clamp the two sides of the meltblown cloth and unfold it, it is convenient for the molding part to press the meltblown cloth down to form a cup-shaped structure. The support plate mainly supports the meltblown cloth. The molding holes on the support plate can cooperate with the molding part to unfold the meltblown cloth to form a cup-shaped structure. Through the mutual cooperation of the propulsion component and the molding component, the problem of the change of the center distance when the meltblown cloth is formed is solved, which can make the molding of the meltblown cloth faster and more convenient.

[0007] In one example, the automatic meltblown cloth forming device for the cup-shaped mask further includes a blowing device, and an air jet hole is provided at one end of the forming piece close to the guide rail, and the blowing device is connected to the air jet hole, and the blowing device can provide gas to the air jet hole so that the gas is blown out from the air jet hole. In the process of pressing the forming piece downward to form the meltblown cloth into a cup-shaped structure, the gas ejected from the air jet hole at the end of the forming piece can assist in forming the meltblown cloth, so that the cup-shaped structure formed by the meltblown cloth is fuller and more three-dimensional.

[0008] In one example, the molding assembly further includes a vertical bar and a horizontal bar, the horizontal bar is arranged above the guide rail, and the two ends of the horizontal bar are respectively fixed to the two sides of the guide rail through the vertical bar, and the first cylinder and the second cylinder are fixed to the horizontal bar, the first cylinder can drive the molding part to move up and down above the guide rail, and the second cylinder can drive the movable clamp to move up and down above the guide rail. The structure composed of the vertical bar and the horizontal bar can support the molding part and the movable clamp, so that the molding part and the movable clamp can be suspended above the guide rail. The first cylinder and the second cylinder serve as a power structure, mainly playing the role of driving the molding part and the movable clamp to move up and down.

[0009] In one example, the second cylinder is fixed to the movable clamp by a transverse driving device, and the transverse driving device can drive the movable clamp to move relatively away from or closer to each other in a direction parallel to the operating surface and perpendicular to the guide rail. The transverse driving device is mainly used to make the two relative movable clamps move away from or closer to each other, so that the movable clamps can move away from each other when clamping the meltblown cloth to unfold the meltblown cloth to facilitate the pressing of the molded part, or move closer to each other during the pressing process to solve the problem of the center distance of the meltblown cloth becoming smaller during the molding process.

[0010] In one example, the propulsion assembly further includes a support rod and a slider, the support rods are fixed on both sides of the support plate, the fixed clamp is arranged on the support rod, and the extension direction of the support rod is the same as the long axis direction of the support plate, the slider is slidably arranged on the two guide rails, and the support rod is fixedly connected to the slider so that the propulsion assembly can slide along the guide rails. The support rod connects the support plate and the slider, which can make the support plate with a certain length more stable, and the fixed clamp can be fixed on the support rod, and the whole structure is more stable.

[0011] In one example, the first cylinder is fixedly connected to the molded part via an adjustment rod, the extension direction of the adjustment rod is the same as the extension direction of the guide rail, and the molded part can move along the extension direction of the adjustment rod. If the front and rear positions of the molded part need to be adjusted during use, the adjustment rod can facilitate the molded part to move along the adjustment rod for adjustment.

[0012] In one example, the automatic forming device for the meltblown cloth of the cup-shaped mask further includes a cutting assembly, the cutting assembly includes a third cylinder and a cutting wire, the third cylinder is fixed to the crossbar, and the third cylinder can drive the cutting wire to move up and down above the guide rail. The cutting wire can cut the meltblown cloth, and the number of forming holes of the support plate determines the number of cup-shaped structures of each section of the meltblown cloth. When the number of forming holes is n, after completing the cup-shaped structures of n meltblown cloths, the third cylinder drives the cutting wire to press down and cut the meltblown cloth, and then the next section is formed.

[0013] In one example, the frame is provided with a strip motion groove; the other side of the frame opposite to the operating surface is provided with an auxiliary guide rail, an auxiliary slider and a driving member, the extension direction of the auxiliary guide rail and the strip motion groove is the same as that of the guide rail, one end of the auxiliary slider is slidably arranged on the auxiliary guide rail, and the other end passes through the strip motion groove and is fixedly connected to the slider, and the driving member can drive the auxiliary slider to slide in the strip motion groove. The auxiliary guide rail, the auxiliary slider and the driving member are all arranged on the other side opposite to the operating surface, that is, located below the operating surface, to avoid the auxiliary guide rail, the auxiliary slider and the driving member and other structures from having an adverse effect on the forming of the meltblown cloth.

[0014] In the second aspect, the present invention also provides a meltblown cloth automatic forming production line for a cup-shaped mask, comprising a discharging unit, a suturing unit, a steering unit, an unfolding unit and a meltblown cloth automatic forming device for a cup-shaped mask according to any one of claims 1 to 8, the discharging unit is used to export two layers of meltblown cloth, the suturing unit is used to sew the two layers of meltblown cloth, the steering unit is used to convert the horizontally arranged meltblown cloth to a vertical position, and the unfolding unit is used to unfold the two layers of meltblown cloth after suturing. After the two layers of meltblown cloth are discharged from the discharging unit, they enter the suturing unit for suturing. After the suturing is completed, the suturing unit is used to change the horizontal laying to a vertical setting, so as to facilitate the subsequent unfolding unit to unfold the two layers of meltblown cloth, and then the cup-shaped structure is formed by the meltblown cloth automatic forming device after unfolding.

[0015] In a third aspect, the present invention also provides an automatic forming process of a meltblown cloth for a cup-shaped mask, based on the above-mentioned automatic forming device of a meltblown cloth for a cup-shaped mask, comprising the following steps:

[0016] 1) The forming piece is aligned with the forming hole at the leftmost end of the support plate, and the pair of fixed clamps at the leftmost end of the support plate clamp the end of the meltblown cloth;

[0017] 2) the propulsion assembly moves a certain distance to the left;

[0018] 3) The two movable clamps arranged opposite to each other move downward to clamp the two sides of the meltblown cloth and move relatively away from each other to unfold the meltblown cloth;

[0019] 4) The propulsion assembly moves a certain distance to the right so that the forming piece is opposite to the forming hole at the leftmost end of the support plate, the forming piece moves downward, and the two oppositely arranged movable clamps are relatively close to each other, and the meltblown cloth is formed;

[0020] 5) The second pair of fixed clamps at the leftmost end of the support plate clamps the meltblown cloth;

[0021] 6) The movable clamp releases the meltblown cloth and moves upward.

[0022] In step 1), the forming hole at the leftmost end of the forming part and the support plate are relative to each other. From step 2) to step 4), the propulsion assembly first moves to the left and then moves to the right to return to the state where the forming hole at the leftmost end of the forming part and the support plate are relative to each other. The above steps reserve a certain length in the extension direction of the guide rail for the reduction of the center distance during the meltblown cloth forming process, and the movable clamp clamps the two sides of the meltblown cloth when moving downward and is relatively far away from each other, so that the meltblown cloth can be unfolded to facilitate the downward pressing of the forming part. During the downward movement of the forming part, the two movable clamps are relatively close to each other and reserve a certain length in the direction perpendicular to the extension direction of the guide rail for the reduction of the center distance during the meltblown cloth forming process, which solves the problem of center distance change during the meltblown cloth forming process, making the meltblown cloth forming step more stable and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are only used to assist those skilled in the art in understanding the technical solution of the present invention. The exemplary embodiments of the present invention described in conjunction with the drawings are only used to explain the technical solution of the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0024] Figure 1 A schematic diagram of the three-dimensional structure of a meltblown cloth automatic forming device for a cup-shaped mask provided in an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of the three-dimensional structure of the automatic meltblown fabric forming device for a cup-shaped mask from another angle provided by an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the three-dimensional structure of the automatic meltblown fabric forming device for a cup-shaped mask from another angle provided by an embodiment of the present invention;

[0027] Figure 4 A cross-sectional view of a fixed clamp provided by an embodiment of the present invention;

[0028] Figure 5 A schematic diagram of the three-dimensional structure of an automatic production line for forming meltblown fabric for a cup-shaped mask provided in an embodiment of the present invention.

[0029] List of reference numerals:

[0030] The melt-blown cloth automatic forming device for a cup-shaped mask 1, a frame 2, an operating surface 3, a guide rail 4, a support plate 5, a fixed clamp 6, a forming hole 7, a forming part 8, a movable clamp 9, a vertical rod 10, a horizontal rod 11, a first cylinder 12, a second cylinder 13, a transverse drive device 14, a support rod 15, a slider 16, an adjustment rod 17, a third cylinder 18, a cutting wire 19, an auxiliary guide rail 20, an auxiliary slider 21, a driving part 22, a discharging unit 23, a sewing unit 24, a steering unit 25, an unfolding unit 26, a main body 27, a push-pull mechanism 28, a clamping part 29, a push-pull part 30, a slide 31, a column 32, and a melt-blown cloth automatic forming production line 100 for a cup-shaped mask. DETAILED DESCRIPTION

[0031] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in an exemplary manner in conjunction with the accompanying drawings.

[0032] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more schemes or examples in a suitable manner.

[0036] like Figures 1 to 5 As shown, in the first aspect, the present invention proposes an automatic meltblown cloth forming device 1 for a cup-shaped mask, comprising a frame 2, a propulsion assembly and a forming assembly, the frame 2 having an operating surface 3, and two guide rails 4 are arranged in parallel on the operating surface 3; the propulsion assembly comprises a support plate 5 and a fixed clamp 6, the fixed clamps 6 are arranged on both sides of the support plate 5 relatively along the long axis direction of the support plate 5 and exist in pairs, and a forming hole 7 is opened on the support plate 5 between the paired fixed clamps 6, the propulsion assembly is slidably arranged on the two guide rails 4, and the movement direction of the propulsion assembly is the same as the long axis direction of the support plate 5; the forming assembly is arranged on the operating surface 3 and is located above the two guide rails 4, the forming assembly comprises a forming part 8 and two relatively arranged movable clamps 9, the forming part 8 and the movable clamp 9 are arranged in sequence along the extension direction of the guide rail 4, the forming part 8 and the movable clamp 9 can both move up and down above the guide rail 4, and the two movable clamps 9 can be relatively far away or close. When the meltblown cloth is formed into a cup-shaped mask, the problem of the center distance becoming smaller when the meltblown cloth is changed from a plane to a three-dimensional cup-shaped structure can be solved by moving the propulsion component forward and backward relative to the molding component. Similarly, a pair of relatively close movable clamps 9 can also solve the problem of the center distance becoming smaller when the meltblown cloth is changed from a plane to a three-dimensional cup-shaped structure. When the movable clamps 9 clamp the two sides of the meltblown cloth and unfold it, it is convenient for the molding part 8 to press the meltblown cloth down to form a cup-shaped structure. The support plate 5 mainly supports the meltblown cloth. The molding hole 7 on the support plate 5 can cooperate with the molding part 8 to unfold the meltblown cloth to form a cup-shaped structure. Through the mutual cooperation of the propulsion component and the molding component, the problem of the change of the center distance during the molding of the meltblown cloth is solved, which can make the molding of the meltblown cloth faster and more convenient.

[0037] In a specific embodiment, the meltblown cloth automatic forming device 1 of the cup-shaped mask also includes a blowing device (not shown in the figure), and a jet hole (not shown in the figure) is opened at one end of the forming part 8 close to the guide rail 4, and the blowing device is connected to the jet hole, and the blowing device can provide gas to the jet hole so that the gas is blown out from the jet hole. In the process of pressing the forming part 8 down to form the meltblown cloth into a cup-shaped structure, the gas ejected from the jet hole at the end of the forming part 8 can assist in molding the meltblown cloth, so that the cup-shaped structure formed by the meltblown cloth is fuller and more three-dimensional. Specifically, the forming part used in this embodiment is a hemispherical forming part, and the jet hole can be set at the bottom of the spherical structure.

[0038] In a specific embodiment, Figures 1 to 3 As shown, the forming assembly further includes a vertical rod 10 and a horizontal rod 11. The horizontal rod 11 is arranged above the guide rail 4, and the two ends of the horizontal rod 11 are respectively fixed to the two sides of the guide rail 4 through the vertical rod 10. The first cylinder 12 and the second cylinder 13 are fixed to the horizontal rod 11. The first cylinder 12 can drive the forming piece 8 to move up and down above the guide rail 4, and the second cylinder 13 can drive the movable clamp 9 to move up and down above the guide rail 4. The structure composed of the vertical rod 10 and the horizontal rod 11 can support the forming piece 8 and the movable clamp 9, so that the forming piece 8 and the movable clamp 9 can be suspended above the guide rail 4. The first cylinder 12 and the second cylinder 13 are used as a power structure, which mainly play the role of driving the forming piece 8 and the movable clamp 9 to move up and down.

[0039] In a specific embodiment, Figures 1 to 3 As shown, the second cylinder 13 is fixed to the movable clamp 9 through a transverse driving device 14, and the transverse driving device 14 can drive the movable clamp 9 to move relatively away from or close to each other in a direction parallel to the operating surface 3 and perpendicular to the guide rail 4. The transverse driving device 14 is mainly used to make the two relative movable clamps 9 move away from or close to each other, so that the movable clamps 9 can move away from each other when clamping the melt-blown cloth to unfold the melt-blown cloth to facilitate the pressing of the molded part 8, or move closer to each other during the pressing process to solve the problem of the center distance of the melt-blown cloth becoming smaller during the molding process.

[0040] In a specific embodiment, Figures 1 to 3 As shown, the propulsion assembly further includes a support rod 15 and a slider 16, support rods 15 are fixed on both sides of the support plate 5, the fixed clamp 6 is arranged on the support rod 15, and the extension direction of the support rod 15 is the same as the long axis direction of the support plate 5, the slider 16 is slidably arranged on the two guide rails 4, and the support rod 15 and the slider 16 are fixedly connected so that the propulsion assembly can slide along the guide rails 4. The support rod 15 connects the support plate 5 and the slider 16, which can make the support plate 5 with a certain length more stable, and the fixed clamp 6 can be fixed on the support rod 15, and the whole structure is more stable.

[0041] In a specific embodiment, Figures 2 to 3As shown, the first cylinder 12 is fixedly connected to the forming member 8 via an adjusting rod 17, the extending direction of the adjusting rod 17 is the same as the extending direction of the guide rail 4, and the forming member 8 can move along the extending direction of the adjusting rod 17. If the front and rear positions of the forming member 8 need to be adjusted during use, the adjusting rod 17 can facilitate the forming member 8 to move along the adjusting rod 17 for adjustment.

[0042] In a specific embodiment, Figure 1 As shown, the automatic meltblown cloth forming device 1 for a cup-shaped mask also includes a cutting assembly, which includes a third cylinder 18 and a cutting wire 19. The third cylinder 18 is fixed to the crossbar 11, and the third cylinder 18 can drive the cutting wire 19 to move up and down above the guide rail 4. The cutting wire 19 can cut the meltblown cloth. The number of forming holes 7 of the support plate 5 determines the number of cup-shaped structures of each section of the meltblown cloth. When the forming holes 7 are n, after completing the cup-shaped structures of n meltblown cloths, the third cylinder 18 drives the cutting wire 19 to press down and cut off the meltblown cloth, and then the next section is formed. Specifically, the support plate shown in this embodiment has 6 forming holes and 7 pairs of fixed clamps.

[0043] In a specific embodiment, Figure 1 , Figure 3 As shown, the frame 2 is provided with a strip motion groove; the other side of the frame 2 opposite to the operating surface 3 is provided with an auxiliary guide rail 20, an auxiliary slider 21 and a driving member 22, the extension direction of the auxiliary guide rail 20 and the strip motion groove is the same as that of the guide rail 4, one end of the auxiliary slider 21 is slidably arranged on the auxiliary guide rail 20, and the other end passes through the strip motion groove and is fixedly connected to the slider 16, and the driving member 22 can drive the auxiliary slider 21 to slide in the strip motion groove. The auxiliary guide rail 20, the auxiliary slider 21 and the driving member 22 are all arranged on the other side opposite to the operating surface 3, that is, located below the operating surface 3, to avoid the auxiliary guide rail 20, the auxiliary slider 21 and the driving member 22 and other structures from having an adverse effect on the forming of the meltblown cloth.

[0044] In the second aspect, the present invention also provides a meltblown cloth automatic forming production line 100 for a cup-shaped mask, comprising a discharging unit 23, a suturing unit 24, a steering unit 25, an unfolding unit 26 and the above-mentioned meltblown cloth automatic forming device 1 for a cup-shaped mask, the discharging unit 23 is used to export two layers of meltblown cloth, the suturing unit 24 is used to sew the two layers of meltblown cloth, the steering unit 25 is used to convert the horizontally arranged meltblown cloth to a vertical direction, and the unfolding unit 26 is used to unfold the two layers of meltblown cloth after suturing. After the two layers of meltblown cloth are discharged from the discharging unit 23, they enter the suturing unit 24 for suturing. After the suturing is completed, the suturing unit 25 changes the suturing from the horizontal laying to the vertical setting, so as to facilitate the subsequent unfolding unit 26 to unfold the two layers of meltblown cloth, and then the meltblown cloth automatic forming device 1 is used to form a cup-shaped structure.

[0045] Specifically, Figure 4 As shown, the specific structure of the fixed clamp 6 includes a main body 27, a push-pull mechanism 28, a clamping member 29 and a push-pull member 30. The clamping member 29 has two and is located at one end of the main body 27. The end of the clamping member 29 can rotate in the main body 27. A slide groove 31 is provided at one end of the clamping member 29 located in the main body 27. The push-pull member 30 has two columns 32 that can be embedded in the slide groove 31. The push-pull member 30 is connected to the push-pull mechanism 28. The push-pull mechanism 28 can push and pull the push-pull member 30 so that the column 32 moves in the slide groove 31, thereby driving the clamping member 29 to rotate at the end of the main body 27 to clamp or release the meltblown cloth.

[0046] In a third aspect, the present invention also provides an automatic forming process of a meltblown cloth for a cup-shaped mask, based on the above-mentioned automatic forming device of a meltblown cloth for a cup-shaped mask, comprising the following steps:

[0047] 1) Make the forming piece 8 face the forming hole 7 at the leftmost end of the support plate 5, so that a pair of fixed clamps 6 at the leftmost end of the support plate 5 clamp the end of the meltblown cloth;

[0048] 2) The propulsion component moves a certain distance to the left;

[0049] 3) Two movable clamps 9 arranged opposite to each other move downward to clamp the two sides of the meltblown cloth and move relatively away from each other to unfold the meltblown cloth;

[0050] 4) The propulsion assembly moves to the right by a certain distance so that the forming piece 8 is opposite to the forming hole 7 at the leftmost end of the support plate 5, the forming piece 8 moves downward, and the two relatively arranged movable clamps 9 are relatively close to each other, and the meltblown cloth is formed;

[0051] 5) The second pair of fixed clamps at the leftmost end of the support plate 5 clamps the meltblown cloth;

[0052] 6) The movable clamp 9 releases the meltblown cloth and moves upward.

[0053] In step 1), the forming part 8 is opposite to the forming hole 7 at the leftmost end of the support plate 5. From step 2) to step 4), the propulsion assembly first moves to the left and then moves to the right to return to the state where the forming part 8 is opposite to the forming hole 7 at the leftmost end of the support plate 5. The above steps reserve a certain length in the extension direction of the guide rail 4 for the reduction of the center distance during the meltblown cloth forming process, and the movable clamp 9 clamps the two sides of the meltblown cloth when moving downward and is relatively far away from each other, so that the meltblown cloth can be unfolded to facilitate the downward pressing of the forming part 8. During the downward movement of the forming part 8, the two movable clamps 9 are relatively close to each other and reserve a certain length in the extension direction perpendicular to the guide rail 4 for the reduction of the center distance during the meltblown cloth forming process, which solves the problem of the change of the center distance during the meltblown cloth forming process, making the meltblown cloth forming step more stable and fast.

[0054] The above steps 1) to 4) are the process of forming a cup-shaped mask. Taking the example of the embodiment in which there are 6 forming holes 7 on the support plate 5 and 7 pairs of fixing clamps 6, after completing step 4), according to Figure 5 , clamp the meltblown cloth with the second pair of fixed clamps from the left, repeat the process from step 2) to step 4) until 6 cup-shaped mask structures are formed. At this time, the pushing assembly is completely moved to the left side of the forming assembly, and the cutting wire 19 cuts the meltblown cloth. The pushing assembly moves back to the right along the guide rail 4 and returns to the state where the forming part 8 is opposite to the forming hole 7 at the leftmost end of the support plate 5, and continues to the next process.

[0055] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0056] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A meltblown cloth automatic forming device for a cup-shaped mask, characterized in that: include: A frame, wherein the frame has an operating surface, and the operating surface is provided with two guide rails in parallel; A propulsion assembly, the propulsion assembly comprising a support plate and a fixed clamp, the fixed clamps are arranged on both sides of the support plate in a pair along the long axis direction of the support plate, a forming hole is provided on the support plate between the pair of fixed clamps, the propulsion assembly is slidably arranged on the two guide rails, and the movement direction of the propulsion assembly is the same as the long axis direction of the support plate; A forming assembly, wherein the forming assembly is arranged on the operating surface and is located above the two guide rails. The forming assembly includes a forming piece and two relatively arranged movable clamps. The forming piece and the movable clamps are arranged in sequence along the extension direction of the guide rails. Both the forming piece and the movable clamps can move up and down above the guide rails, and the two movable clamps can be relatively far away from or close to each other.

2. The automatic meltblown fabric forming device for a cup-shaped mask according to claim 1, characterized in that: The meltblown cloth automatic forming device for the cup-shaped mask also includes a blowing device. An air jet hole is opened at one end of the forming part close to the guide rail. The blowing device is connected to the air jet hole, and the blowing device can provide gas to the air jet hole so that the gas is blown out from the air jet hole.

3. The automatic meltblown fabric forming device for a cup-shaped mask according to claim 1, characterized in that: The forming assembly also includes a vertical rod and a cross rod, the cross rod is arranged above the guide rail, and the two ends of the cross rod are respectively fixed to the two sides of the guide rail through the vertical rod, and the first cylinder and the second cylinder are fixed on the cross rod, the first cylinder can drive the forming part to move up and down above the guide rail, and the second cylinder can drive the movable clamp to move up and down above the guide rail.

4. The automatic meltblown fabric forming device for a cup-shaped mask according to claim 3, characterized in that: The second cylinder is fixed to the movable clamp via a transverse driving device, and the transverse driving device can drive the movable clamp to move relatively away from or closer to each other in a direction parallel to the operating surface and perpendicular to the guide rail.

5. The automatic meltblown fabric forming device for a cup-shaped mask according to claim 1, characterized in that: The propulsion assembly also includes a support rod and a slider. The support rods are fixed on both sides of the support plate. The fixed clamp is arranged on the support rod, and the extension direction of the support rod is the same as the long axis direction of the support plate. The slider is slidably arranged on the two guide rails, and the support rod is fixedly connected to the slider so that the propulsion assembly can slide along the guide rails.

6. The automatic meltblown fabric forming device for a cup-shaped mask according to claim 3, characterized in that: The first cylinder is fixedly connected to the forming part via an adjusting rod. The extending direction of the adjusting rod is the same as the extending direction of the guide rail. The forming part can move along the extending direction of the adjusting rod.

7. The automatic meltblown fabric forming device for a cup-shaped mask according to claim 3, characterized in that: The meltblown cloth automatic forming device for the cup-shaped mask also includes a cutting assembly, which includes a third cylinder and a cutting wire. The third cylinder is fixed to the cross bar, and the third cylinder can drive the cutting wire to move up and down above the guide rail.

8. The automatic meltblown fabric forming device for a cup-shaped mask according to claim 5, characterized in that: The frame is provided with a strip motion groove; the other side of the frame opposite to the operating surface is provided with an auxiliary guide rail, an auxiliary slider and a driving member, the extension direction of the auxiliary guide rail and the strip motion groove is the same as that of the guide rail, one end of the auxiliary slider is slidably set on the auxiliary guide rail, and the other end passes through the strip motion groove and is fixedly connected to the slider, and the driving member can drive the auxiliary slider to slide in the strip motion groove.

9. A meltblown cloth automatic forming production line for cup-shaped masks, characterized in that: The invention relates to an automatic meltblown cloth forming device for a cup-shaped mask, comprising a discharging unit, a sewing unit, a turning unit, an unfolding unit and the like connected in sequence, wherein the discharging unit is used to discharge two layers of meltblown cloth, the sewing unit is used to sew the two layers of meltblown cloth, the turning unit is used to convert the horizontally arranged meltblown cloth into a vertical direction, and the unfolding unit is used to unfold the two layers of meltblown cloth after being sewn.

10. An automatic forming process of meltblown cloth for a cup-shaped mask, based on the automatic forming device of meltblown cloth for a cup-shaped mask according to any one of claims 1 to 8, characterized in that: The following steps are involved: 1) The forming piece is aligned with the forming hole at the leftmost end of the support plate, and the pair of fixed clamps at the leftmost end of the support plate clamp the end of the meltblown cloth; 2) the propulsion assembly moves a certain distance to the left; 3) The two movable clamps arranged opposite to each other move downward to clamp the two sides of the meltblown cloth and move relatively away from each other to unfold the meltblown cloth; 4) The propulsion assembly moves a certain distance to the right so that the forming piece is opposite to the forming hole at the leftmost end of the support plate, the forming piece moves downward, and the two oppositely arranged movable clamps are relatively close to each other, and the meltblown cloth is formed; 5) The second pair of fixed clamps at the leftmost end of the support plate clamps the meltblown cloth; 6) The movable clamp releases the meltblown cloth and moves upward.

Images