A fully automatic three-dimensional mask machine with multiple sections of material traction device with different thicknesses

Abstract

The present invention belongs to the technical field of mask production, and discloses a traction device for multiple sections of materials with different thicknesses for a fully automatic three-dimensional mask machine, wherein: the materials tractioned by the traction device include a continuous base material and a surface material intermittently covered on the continuous base material, and the traction device includes at least one group of traction roller groups sequentially arranged along the forward direction of the materials; each group of the traction roller groups includes an upper traction roller and two lower traction rollers distributed in an isosceles triangle state, and an auxiliary roller arranged between the two lower traction rollers, the auxiliary roller can rotate between the two lower traction rollers or revolve around the upper traction roller, and the distance between the auxiliary roller and the upper traction roller is adjustable; in summary, a front pressure position, a rear pressure position and an auxiliary pressure position with variable position are effectively formed, so that multiple sections of materials of different thicknesses can always have a clamping and traction effect when being tractioned, thereby ensuring the stability of material traction to avoid slipping or pauses.

Description

Technical Field

[0001] The invention belongs to the technical field of mask production, and particularly relates to a multi-section traction device for materials with different thicknesses for a fully automatic three-dimensional mask machine. Background Art

[0002] When producing masks, the mask fabric needs to be composited with a variety of raw materials. Taking a double-layer mask as an example, it includes a base material and a surface material. The base material is continuous, and the surface material is covered on the base material in an intermittent manner. The mask is then cut according to the intervals between the surface materials.

[0003] As mentioned above, the corresponding mask fabric needs to be pulled before cutting the mask. From the above disclosed structure, it can be seen that in the fabric, the thickness of the surface material covered position is larger, and the thickness of the surface material-free position is smaller, so that the overall fabric has uneven thickness characteristics.

[0004] In the existing technology, most of the time, a double-roller structure is used to achieve traction of the corresponding materials. However, for mask fabrics of unequal thickness, if the distance between the double rollers is adjusted to correspond to the thickness of the substrate, the fabric covering will be under excessive pressure and deformed, affecting the molding quality of the mask; if the distance between the double rollers is adjusted to correspond to the overall thickness of the substrate and fabric, the part without the surface material cannot be pressurized when the double rollers pass through, which makes it very easy for it to pause or slip, making effective traction impossible. Summary of the Invention

[0005] In view of this, in order to be suitable for the traction of materials of different thicknesses during mask production, the object of the present invention is to provide a fully automatic three-dimensional mask machine with a multi-section traction device for materials of different thicknesses.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a multi-stage traction device for a fully automatic three-dimensional mask machine for materials of different thicknesses, wherein: the material tractioned by the traction device includes a continuous substrate and a surface material intermittently covered on the continuous substrate, and the traction device includes at least one group of traction rollers arranged in sequence along the direction of material advancement;

[0007] Each group of the pulling rollers includes an upper pulling roller and two lower pulling rollers that are actively driven and are distributed in an isosceles triangle state. When the material advances, it passes through the gap between the upper pulling roller and the lower pulling roller, and the upper pulling roller and the lower pulling roller rotate synchronously with the advancement of the material.

[0008] Each group of traction rollers further includes an auxiliary roller arranged between the two lower traction rollers. The auxiliary roller can rotate between the two lower traction rollers or revolve around the upper traction roller, and the distance between the auxiliary roller and the upper traction roller is adjustable.

[0009] Specifically, the two lower traction rollers are respectively a front lower traction roller and a rear lower traction roller, and the front lower traction roller cooperates with the upper traction roller to form a front pressure position, and the rear lower traction roller cooperates with the upper traction roller to form a rear pressure position.

[0010] Preferably, the auxiliary roller includes a rotating inner cylinder and a fixed outer cylinder, the fixed outer cylinder is provided with an opening, and the rotating inner cylinder cooperates with the upper traction roller through the opening.

[0011] Preferably, the structure for achieving adjustable distance between the auxiliary roller and the upper traction roller includes: an electric telescopic rod connected between the two ends of the auxiliary roller and the two ends of the upper traction roller, and the two ends of the electric telescopic rod are respectively rotatably connected to the auxiliary roller and the upper traction roller.

[0012] Preferably, a hollow shaft passes through the upper traction roller, a rotatable inner shaft passes through the hollow shaft, and the two electric telescopic rods are fixed on the inner shaft, and the auxiliary roller is driven to revolve based on the rotation of the inner shaft.

[0013] Preferably, both ends of the hollow shaft are rotatably connected to mounting brackets, and both ends of the inner shaft extend into two mounting brackets respectively; a drive motor and a drive gear are installed in one of the mounting brackets, the drive gear is engaged with the outer wall of the inner shaft, and the drive motor drives the inner shaft to rotate automatically through the drive gear.

[0014] Preferably, the traction device further comprises a chassis for mounting the traction roller set, and both the mounting frames are liftably disposed in the chassis.

[0015] Furthermore, a lifting cylinder is installed on the top of the chassis, and the bottom of the lifting cylinder is connected to the mounting frame, which is used to drive the mounting frame to automatically rise and fall in the chassis.

[0016] Furthermore, a traction motor is installed outside the chassis, and an active roller is installed inside the chassis. The active roller is rotationally connected to the traction motor, and the outer wall of the active roller is in contact with the outer wall of the upper traction roller; the traction motor drives the upper traction roller to rotate automatically through the active roller.

[0017] In addition, at least two hanging rings are provided on the top of the chassis, and at least the hanging rings are symmetrically distributed along the center of the chassis.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) In the present invention, two lower traction rollers adapted to the upper traction roller and an auxiliary roller with adjustable position are provided, thereby forming a front pressure position, a rear pressure position and an auxiliary pressure position with variable position, so that multiple sections of materials of different thicknesses can always have a clamping and traction effect when being pulled, thereby ensuring the stability of material traction to avoid slipping or pauses.

[0020] (2) The position-adjustable auxiliary roller is arranged between the two lower traction rollers and can revolve around the upper traction roller. This makes it effective for traction of materials of different thicknesses and sizes at different intervals, thereby effectively improving the applicability of the overall device.

[0021] (3) With respect to the auxiliary roller, the inner shaft of the hollow shaft can automatically rotate to realize its revolution, which has the advantages of simple structure, stable drive, and convenient processing and assembly.

[0022] (4) For the above-mentioned auxiliary roller, an electric telescopic rod is connected between the auxiliary roller and the upper traction roller, thereby effectively adjusting the distance between the auxiliary roller and the upper traction roller, thereby ensuring that during the continuous traction process, the auxiliary roller can automatically adapt to the traction of materials at different thicknesses.

[0023] (5) With respect to the auxiliary roller, its main structure includes a rotating inner cylinder and a fixed outer cylinder, thereby effectively ensuring that the auxiliary roller does not affect the rotation of the two lower traction rollers during its revolution, thereby further ensuring the stability of the entire device during traction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a group of traction rollers in the present invention;

[0025] Figure 2 Schematic diagram of the structure of the auxiliary roller in the present invention;

[0026] Figure 3 Schematic diagram of the cooperation between the auxiliary roller and the upper traction roller of the present invention;

[0027] Figure 4 A schematic structural diagram of the traction device provided by the present invention;

[0028] Figure 5 It is the traction principle diagram of the present invention;

[0029] In the figure: traction roller group 100, upper traction roller 1, hollow shaft 11, inner shaft 12, mounting frame 13, drive motor 14, drive gear 15, front lower traction roller 2, rear lower traction roller 3, auxiliary roller 4, rotating inner cylinder 41, fixed outer cylinder 42, opening 43, electric telescopic rod 44, chassis 5, lifting cylinder 6, traction motor 7, hanging ring 8, active roller 9, front pressure position a, rear pressure position b. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figures 1-4 As shown, the present invention provides the following technical solutions: a fully automatic three-dimensional mask machine multi-section material traction device with different thicknesses, the material traction device includes a continuous substrate and a surface material intermittently covered on the continuous substrate, and the traction device includes at least one group of traction rollers 100 arranged in sequence along the material forward direction; wherein:

[0032] Each traction roller set 100 includes an upper traction roller 1 and two lower traction rollers that are arranged in an isosceles triangle. When the material advances, it passes through the gap between the upper traction roller 1 and the lower traction rollers, and the upper traction roller 1 and the lower traction rollers rotate synchronously with the advancement of the material.

[0033] Each traction roller group 100 further includes an auxiliary roller 4 disposed between the two lower traction rollers. The auxiliary roller 4 can rotate between the two lower traction rollers or revolve around the upper traction roller 1, and the distance between the auxiliary roller 4 and the upper traction roller 1 is adjustable.

[0034] As mentioned above, regarding the two lower traction rollers: they are the front lower traction roller 2 and the rear lower traction roller 3, and the front lower traction roller 2 cooperates with the upper traction roller 1 to form a front pressure position a, and the rear lower traction roller 3 cooperates with the upper traction roller 1 to form a rear pressure position b.

[0035] As mentioned above, the auxiliary roller 4 includes a rotating inner cylinder 41 and a fixed outer cylinder 42 . The fixed outer cylinder 42 is provided with an opening 43 , and the rotating inner cylinder 41 cooperates with the upper traction roller 1 through the opening 43 .

[0036] As mentioned above, regarding the auxiliary roller 4, the structure for achieving adjustable distance between the auxiliary roller 4 and the upper traction roller 1 includes: an electric telescopic rod 44 connected between the two ends of the auxiliary roller 4 and the two ends of the upper traction roller 1, and the two ends of the electric telescopic rod 44 are respectively rotatably connected to the auxiliary roller 4 and the upper traction roller 1.

[0037] As mentioned above, regarding the auxiliary roller 4, the structure for realizing the revolution of the auxiliary roller 4 around the upper traction roller 1 includes: a hollow shaft 11 is passed through the upper traction roller 1, a rotatable inner shaft 12 is passed through the hollow shaft 11, and two electric telescopic rods 44 are fixed on the inner shaft 12, and drive the auxiliary roller 4 to rotate based on the rotation of the inner shaft 12; both ends of the hollow shaft 11 are rotatably connected to the mounting bracket 13, and the two ends of the inner shaft 12 extend into the two mounting brackets 13 respectively; a drive motor 14 and a drive gear 15 are installed in one of the mounting brackets 13, the drive gear 15 is engaged with the outer wall of the inner shaft 12, and the drive motor 14 drives the inner shaft 12 to rotate automatically through the drive gear 15.

[0038] In summary, the principle of achieving the traction of multiple sections of materials of different thickness by the overall traction device is as follows:

[0039] Specifically, before starting to haul, the height of the upper haul roller 1 is adjusted, thereby adjusting the gap between the upper haul roller 1 and the lower haul roller so that the gap satisfies the thickness of the material to be hauled in the present invention. Specifically, the material to be hauled is as follows: Figure 1 As shown, the surface material is intermittently covered on the surface of the continuous substrate, so that the material thickness is smaller at the position where there is only the substrate; the material thickness is larger at the position where there are both the substrate and the surface material; based on this, the gap between the upper traction roller 1 and the lower traction roller should meet the combined thickness of the substrate and the surface material.

[0040] Specifically, during traction, as the material advances:

[0041] See also Figure 5 As shown in Figure A, at this time, the base material and the surface material enter between the upper traction roller 1 and the front lower traction roller 2 together, thereby causing the front pressure position a to be pressurized. At this time, the auxiliary roller 4 moves to the revolution starting position, that is, the position shown in Figure A, and the position of the auxiliary roller 4 is adjusted based on the electric telescopic rod 44 so that the distance between the auxiliary roller 4 and the upper traction roller 1 is equal to the above-mentioned set gap; wherein, the auxiliary roller 4 contacts the front lower traction roller 2, and when in contact, based on the separation of the fixed outer cylinder 42, the rotation of the front lower traction roller 2 will not have any effect on the rotating inner cylinder 41; in the state shown in the figure, the upper traction roller 1 cooperates with the front lower traction roller 2, so that the material is forced to move forward;

[0042] See also Figure 5As shown in Figure B, as the material advances, the base material and the surface material enter between the auxiliary roller 4 and the upper traction roller 1, thereby putting pressure on the auxiliary roller 4. At this time, the drive motor 14 is started to realize the revolution of the auxiliary roller 4, and the revolution direction is the same as the material advance direction, that is, approaching the rear lower traction roller 3; during this process, the revolution speed of the auxiliary roller 4 is the same as the rotation speed of the upper traction roller 1, thereby making the pressure position between the material and the auxiliary roller 4 in a relatively static state, that is, the auxiliary roller 4 will not rotate during this process, but the cooperation between the auxiliary roller 4 and the upper traction roller 1 ensures the stability of the material advance. Therefore, during this process, whether the surface material is still under pressure at the front pressure position a or not will not affect the stability of the material advance.

[0043] See also Figure 5 As shown in Figure C, as the auxiliary roller 4 revolves, the material completes this stage of advancement, and the auxiliary roller 4 moves to the final position of the revolution, that is, the position shown in Figure C. At this time, the auxiliary roller 4 and the rear lower traction roller 3, and based on the limitation of the rear lower traction roller 3, the auxiliary roller 4 no longer rotates around the upper traction roller 1; in this state, based on the active drive of the upper traction roller 1, it still cooperates with the auxiliary roller 4 to achieve stable advancement of the material, and at this time the auxiliary roller 4 automatically achieves the purpose of pulling the material;

[0044] See also Figure 5 As shown in Figure D, as the auxiliary roller 4 rotates and pulls, the substrate and the surface material enter between the upper pulling roller 1 and the rear lower pulling roller 3, thereby pressurizing the rear pressure position b; in this state:

[0045] If the front pressure position a is also under pressure, the auxiliary roller 4 is driven to return to the position shown in Figure A, and the above drive is repeated;

[0046] If the front pressure position a is not under pressure, the auxiliary roller 4 is kept stationary. When there is no pressure between the auxiliary roller 4 and the upper traction roller 1, the distance between the auxiliary roller 4 and the upper traction roller 1 is adjusted based on the electric telescopic rod 44. At this time, the adjusted distance should meet the thickness of the substrate, and the substrate can be pressed separately by the auxiliary roller 4 and the upper traction roller 1, thereby ensuring that the entire material can still be stably pulled forward (this operation is not affected by whether the rear pressure position b is under pressure, that is: when the rear pressure position b is under pressure, the upper traction roller 1, the rear lower traction roller 3 and the auxiliary roller 4 jointly pull the material; when the rear pressure position b is not under pressure, the upper traction roller 1 and the auxiliary roller 4 pull the material separately); after this operation, if the front pressure position a is under pressure again, the auxiliary roller 4 is driven to return to the position in Figure A, and the above drive is repeated.

[0047] The traction device also includes a chassis 5 for mounting the traction roller assembly 100, with two mounting brackets 13 positioned within the chassis 5 in a manner such that both can be raised and lowered. Specifically, a lifting cylinder 6 is mounted on the top of the chassis 5, and the bottom of the lifting cylinder 6 is connected to the mounting bracket 51, driving the mounting bracket 51 to automatically rise and fall within the chassis 5. Thus, the required height adjustment of the upper traction roller 1 can be achieved by driving the lifting cylinder 6.

[0048] As for the above-mentioned chassis 5, a traction motor 7 is installed on the outside of the chassis 5, and an active roller 9 is installed on the inside of the chassis 5. The active roller 9 is rotatably connected to the traction motor 7, and the outer wall of the active roller 9 is in contact with the outer wall of the upper traction roller 1; thus, based on the drive of the traction motor 7, the active roller 9 can be effectively driven to actively rotate, and the active roller 9 drives the upper traction roller 1 to rotate automatically based on friction; preferably, the active roller 9 is arranged directly above the upper traction roller 1 to avoid interference with the two lower traction rollers.

[0049] In addition, at least two hanging rings 8 are provided on the top of the chassis 5, and at least the hanging rings 8 are symmetrically distributed along the center of the chassis 5. This facilitates the lifting and movement of the entire device.

[0050] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A fully automatic three-dimensional mask machine with multiple sections of material traction device with different thicknesses, characterized in that: The material pulled by the pulling device includes a continuous base material and a surface material intermittently covered on the continuous base material, and the pulling device includes at least one group of pulling rollers (100) arranged in sequence along the advancing direction of the material. Each group of the pulling rollers (100) comprises an upper pulling roller (1) that can be actively driven and two lower pulling rollers that are distributed in an isosceles triangle state. When the material advances, it passes through the gap between the upper pulling roller (1) and the lower pulling rollers, and the upper pulling roller (1) and the lower pulling rollers rotate synchronously with the advancement of the material. Each group of the traction rollers (100) further includes an auxiliary roller (4) arranged between the two lower traction rollers, the auxiliary roller (4) can rotate between the two lower traction rollers or revolve around the upper traction roller (1), and the distance between the auxiliary roller (4) and the upper traction roller (1) is adjustable; The two lower traction rollers are respectively a front lower traction roller (2) and a rear lower traction roller (3), and the front lower traction roller (2) cooperates with the upper traction roller (1) to form a front pressure position (a), and the rear lower traction roller (3) cooperates with the upper traction roller (1) to form a rear pressure position (b), and the structure for achieving adjustable distance between the auxiliary roller (4) and the upper traction roller (1) includes: an electric telescopic rod (44) connected between the two ends of the auxiliary roller (4) and the two ends of the upper traction roller (1), and the two ends of the electric telescopic rod (44) are rotatably connected to the auxiliary roller (4) and the upper traction roller (1) respectively; Before starting traction, the height of the upper traction roller (1) is adjusted, and the gap between the upper traction roller (1) and the lower traction roller should meet the combined thickness of the base material and the surface material. As the material advances, the base material and the surface material enter between the auxiliary roller (4) and the upper traction roller (1), thereby causing the auxiliary roller (4) to be compressed. At this time, the drive motor (14) is started to realize the revolution of the auxiliary roller (4), and the revolution direction is the same as the forward direction of the material, that is, approaching the rear lower traction roller (3); in this process, the revolution speed of the auxiliary roller (4) is the same as the rotation speed of the upper traction roller (1), thereby causing the compressed position between the material and the auxiliary roller (4) to be in a relatively static state.

2. A fully automatic three-dimensional mask machine multi-section material traction device with different thicknesses according to claim 1, characterized in that, The auxiliary roller (4) comprises a rotating inner cylinder (41) and a fixed outer cylinder (42); an opening (43) is provided on the fixed outer cylinder (42); and the rotating inner cylinder (41) cooperates with the upper traction roller (1) through the opening (43).

3. A fully automatic three-dimensional mask machine multi-section material traction device with different thicknesses according to claim 1, characterized in that, A hollow shaft (11) passes through the upper traction roller (1), a rotatable inner shaft (12) passes through the hollow shaft (11), and the two electric telescopic rods (44) are fixed on the inner shaft (12), and drive the auxiliary roller (4) to revolve based on the rotation of the inner shaft (12).

4. A multi-stage traction device for a fully automatic three-dimensional mask machine with different thicknesses according to claim 3, characterized in that: Both ends of the hollow shaft (11) are rotatably connected to mounting brackets (13), and both ends of the inner shaft (12) extend into the two mounting brackets (13) respectively; a driving motor (14) and a driving gear (15) are installed in one of the mounting brackets (13), the driving gear (15) is engaged with the outer wall of the inner shaft (12), and the driving motor (14) drives the inner shaft (12) to rotate automatically through the driving gear (15).

5. A multi-stage traction device for a fully automatic three-dimensional mask machine with different thickness materials according to any one of claims 1 to 4, characterized in that: It also includes a chassis (5) for installing the traction roller group (100), and two mounting frames (13) are both elevatable and arranged in the chassis (5).

6. A multi-stage traction device for a fully automatic three-dimensional mask machine with different thicknesses according to claim 5, characterized in that: A lifting cylinder (6) is installed on the top of the chassis (5), and the bottom of the lifting cylinder (6) is connected to the mounting frame (13) for driving the mounting frame (13) to automatically rise and fall in the chassis (5).

7. A multi-stage traction device for a fully automatic three-dimensional mask machine with different thicknesses according to claim 6, characterized in that: A traction motor (7) is installed outside the chassis (5), and an active roller (9) is installed inside the chassis (5). The active roller (9) is rotatably connected to the traction motor (7), and the outer wall of the active roller (9) is in contact with the outer wall of the upper traction roller (1); the traction motor (7) drives the upper traction roller (1) to rotate automatically through the active roller (9).

8. The multi-stage traction device for materials of different thicknesses of a fully automatic three-dimensional mask machine according to claim 5 is characterized in that: At least two hanging rings (8) are provided on the top of the chassis (5), and at least the hanging rings (8) are symmetrically distributed along the center of the chassis (5).

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