Nose bridge strip transferring and shearing mechanism

Abstract

The utility model belongs to the technical field of mask production equipment, and particularly relates to a nose bridge strip transferring and shearing mechanism which comprises a rack, a feeding wheel, a transferring part and a shearing part, the feeding wheel, the transferring part and the shearing part are sequentially and oppositely arranged at the top of the rack, the feeding wheel is used for winding a nose bridge strip, and the shearing part is used for shearing the nose bridge strip. A nose bridge strip extends to the transferring part from the discharging wheel, the nose bridge strip extending out of the discharging wheel is transferred to the shearing part through the transferring part, the nose bridge strip is sheared through the shearing part, a pressing assembly is arranged between the discharging wheel and the transferring part, and the pressing assembly comprises a lower pressing die. The bent nose bridge strip can be flattened step by step, bending stress of the nose bridge strip can be overcome, the nose bridge strip can be in a straight state before entering a transferring part, and the purpose that the nose bridge strip can be kept in the straight state in the whole process from taking out of a discharging wheel to being fed into a shearing procedure is expected to be achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of mask production equipment, and specifically relates to a nose bridge strip transfer and shearing mechanism. BACKGROUND

[0002] Nose bridge strips are common components of masks and are usually used to enhance the sealing and structural strength of masks. In the production process of masks, nose bridge strips need to be accurately transferred and sheared to ensure that their length, shape and position meet design requirements.

[0003] In the prior art, nose bridge strips are usually stored in a wound manner on a feeding wheel before being transferred to a shearing process, so that when the nose bridge strips are taken out by a transfer device, the nose bridge strips will be in a curved state, which not only increases the difficulty of the subsequent shearing process, but also may cause the sizes of the sheared nose bridge strips to be inconsistent, thereby affecting the production quality and efficiency of masks. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides a nose bridge strip transfer and shearing mechanism, which aims to ensure that the nose bridge strips can maintain a straight state during the whole process from being taken out of a feeding wheel to being sent to a shearing process, thereby avoiding shearing accidents caused by the bending of nose bridge strips in the traditional manner.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] A nose bridge strip transfer and shearing mechanism comprises a rack, a feeding wheel, a transfer part and a shearing part, the feeding wheel, the transfer part and the shearing part are sequentially and oppositely arranged on the top of the rack, the feeding wheel is used for winding nose bridge strips, the nose bridge strips are extended from the feeding wheel to the transfer part, the transfer part is used for transferring the nose bridge strips extended from the feeding wheel to the shearing part, the shearing part is used for shearing the nose bridge strips, a pressing assembly is arranged between the feeding wheel and the transfer part, and the pressing assembly comprises:

[0007] A lower pressing die is fixed on the top of the rack, and the top of the lower pressing die abuts against the nose bridge strips extended from the feeding wheel;

[0008] An upper pressing die is arranged above the lower pressing die, the upper pressing die and the lower pressing die are detachable, and a lifting device is arranged on the side of the upper pressing die away from the lower pressing die, the lifting device drives the upper pressing die to make reciprocating lifting movement;

[0009] The side of the upper pressing die facing the lower pressing die is provided with a pressing wheel, and the pressing wheel is used for rolling and pressing the nose bridge strips on the top of the lower pressing die.

[0010] As a preferred technical scheme, the utility model further comprises:

[0011] A guide column is arranged on the side of the upper die facing the lower die;

[0012] A docking hole is arranged on the top of the lower die;

[0013] The guide column is inserted into the docking hole.

[0014] Further, a sealing ring is arranged in the opening of the docking hole, and a stopper is arranged on the end of the guide column inserted into the docking hole, wherein the outer diameter of the stopper is equal to the inner diameter of the opening of the docking hole.

[0015] Further, the conveying part comprises a driving feed roller and a driven feed roller oppositely arranged on the top and bottom, the end of the driving feed roller is connected with a driving member, and the driving member drives the driving feed roller to rotate, wherein the side of the driving feed roller and the driven feed roller facing each other is in contact with the nose strip.

[0016] Further, the shearing part comprises:

[0017] A support seat is arranged on the top of the frame, and the support seat is used for receiving the nose strip conveyed by the conveying part;

[0018] A punching member is arranged above the support seat, and the side of the punching member facing the support seat is provided with a cutter, and the cutter is driven by the punching member to punch and shear the nose strip on the support seat.

[0019] Further, the device further comprises:

[0020] A feeding groove is arranged on the top of the support seat, and the end of the feeding groove in the length direction faces the conveying part, and the feeding groove guides the nose strip on the top of the support seat to be conveyed;

[0021] A shearing table is arranged on the top of the support seat, and the shearing table is located at the other end of the length direction of the feeding groove;

[0022] The feeding groove and the shearing table are arranged in a stepped manner, the height of the feeding groove is higher than that of the shearing table, the end of the feeding groove facing the shearing table is provided with a shearing opening, and the shearing opening is located directly below the cutter.

[0023] Further, a shielding wall is arranged on the inner wall of the feeding groove, and the shielding wall limits the nose strip in the feeding groove.

[0024] Further, the shielding wall is arranged in an inclined manner.

[0025] As described above, due to the adoption of the above technical scheme, the device has the following beneficial effects:

[0026] Through the arrangement of the pressing assembly, the curved nose bridge strips can be gradually flattened, which helps to overcome the bending stress of the nose bridge strips and makes them reach a relatively flat state before entering the transfer part, so as to achieve the purpose that the nose bridge strips can maintain a flat state during the whole process from being taken out from the feeding wheel to being sent into the shearing process. BRIEF DESCRIPTION OF DRAWINGS

[0027] The utility model will be through example and refer to the mode of the drawing, wherein:

[0028] Figure 1 It is the front view of the nose bridge strip transfer and shearing mechanism provided by the utility model;

[0029] Figure 2 It is the structure schematic view of the shearing table provided by the utility model;

[0030] Figure 3 It is the structure schematic view of the stamping part provided by the utility model;

[0031] Figure 4 It is the internal structure schematic view of the pressing bin provided by the utility model.

[0032] Frame-1, feeding wheel-2, pressing assembly-3, driving feeding roller-4, driven feeding roller-5, support seat-6, stamping part-7, shearing table-8, shearing opening-9, material running groove-10, shielding wall-11, cutter-12, upper pressing die-13, pressing wheel-14, guide column-15, lower pressing die-16, butt joint hole-17. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0034] Embodiment one

[0035] In the prior art, before the nose bridge strips are sent to the shearing process, they are usually stored in the form of curling on the feeding wheel. Therefore, when the transfer equipment takes out these nose bridge strips, they often present a curved state. This condition not only increases the difficulty of the subsequent shearing process, but also may cause the size difference of the sheared nose bridge strips, thereby affecting the production quality and efficiency of the mask.

[0036] Therefore, in order to solve the above problems and realize the function of keeping the nose bridge strips flat during the transfer process, the utility model discloses a nose bridge strip transfer and shearing mechanism, which is referred toFigure 1 and Figure 2 , including rack 1, feeding wheel 2, transfer part and shearing part, the feeding wheel 2, the transfer part and the shearing part are sequentially arranged on the top of the rack 1, the feeding wheel 2 is used for winding the nose strip, the nose strip extends from the feeding wheel 2 to the transfer part, the nose strip extending from the feeding wheel 2 is transferred to the shearing part by the transfer part, the nose strip is sheared by the shearing part, the feeding wheel 2 and the transfer part are provided with a pressing assembly 3, the pressing assembly 3 includes a lower pressing die 16 and an upper pressing die 13.

[0037] In the embodiment, when the transfer part pulls out the nose strip from the feeding wheel 2, the upper pressing die 13 and the lower pressing die 16 of the pressing assembly 3 apply pressure to the nose strip, so that the nose strip can be flattened, which helps to keep the nose strip flat during the transfer process.

[0038] In a specific embodiment, the lower pressing die 16 is fixed on the top of the rack 1, the top of the lower pressing die 16 abuts against the nose strip extending from the feeding wheel 2, the upper pressing die 13 is arranged above the lower pressing die 16, the upper pressing die 13 and the lower pressing die 16 are detachable, a lifting device is connected to the side of the upper pressing die 13 away from the lower pressing die 16, and the upper pressing die 13 is driven by the lifting device to make reciprocating lifting motion, wherein the side of the upper pressing die 13 facing the lower pressing die 16 is provided with a pressing wheel 14, and the pressing wheel 14 is used to roll and press the nose strip on the top of the lower pressing die 16.

[0039] It should be noted that the lifting device is controlled by an upper computer, the pressing assembly 3 continuously presses the nose strip, and the upper pressing die 13 is lifted only when a new feeding wheel 2 is needed to connect the nose strip on the new feeding wheel 2 to the transfer part.

[0040] In actual use, the upper pressing die 13 is above the lower pressing die 16, the worker connects the end of the nose strip on the feeding wheel 2 to the transfer part, at this time, the nose strip between the feeding wheel 2 and the transfer part is placed on the top of the lower pressing die 16, when the transfer part starts to pull out the nose strip from the feeding wheel 2, the lifting device drives the upper pressing die 13 to descend, so that the pressing wheel 14 on the side of the upper pressing die 13 facing the lower pressing die 16 is in close contact with the nose strip. Then, through the rolling and pressing action of the pressing wheel 14, the curved nose strip can be effectively flattened step by step. The working principle is that the pressure applied by the pressing wheel 14 is uniformly distributed on the nose strip, which overcomes the bending stress of the nose strip, so that the nose strip reaches a relatively flat state before entering the transfer part.

[0041] Further, the transferring part comprises a driving feeding roller 4 and a driven feeding roller 5 oppositely arranged, the driving feeding roller 4 is provided with a driving member at the end thereof, and the driving member drives the driving feeding roller 4 to rotate, wherein the side of the driving feeding roller 4 and the driven feeding roller 5 facing each other is in contact with the bridge piece, and the cooperation of the driving feeding roller 4 and the driven feeding roller 5 realizes the stable transferring of the bridge piece.

[0042] Specifically, the driving feeding roller 4 is provided with a driving member at the end thereof, and the driving member drives the driving feeding roller 4 to rotate. When the driving feeding roller 4 rotates, the bridge piece is in contact with the side of the driving feeding roller 4 and the driven feeding roller 5 facing each other under the action of friction, and the bridge piece is smoothly transferred from the feeding wheel 2 to the shearing part along with the rotation of the driving feeding roller 4.

[0043] The driving member can be a motor.

[0044] Further, the shearing part comprises a support seat 6 and a stamping part 7, the support seat 6 is arranged on the top of the frame 1, and the support seat 6 is used for receiving the bridge piece transferred by the transferring part, the stamping part 7 is arranged above the support seat 6, and the side of the stamping part 7 facing the support seat 6 is provided with a cutter 12, and the cutter 12 is driven by the stamping part 7 to stamp and shear the bridge piece on the support seat 6.

[0045] In the specific embodiment, the stamping part 7 is provided with a cylinder, and the cylinder drives the stamping part 7 to make reciprocating motion towards the top of the support seat 6 by compressed air, and in this process, the stamping part 7 drives the cutter 12 to move downward to shear the bridge piece on the top of the support seat 6.

[0046] Embodiment two

[0047] On the basis of the embodiment one, in order to prevent the upper pressing die 13 from being dislocated in the process of pressing downward and improve the stability of the upper and lower pressing dies, the utility model also comprises guide columns 15 and butt joint holes 17 for guiding the direction of die closing, specifically, the guide columns 15 are arranged on the side of the upper pressing die 13 facing the lower pressing die 16, the butt joint holes 17 are arranged on the top of the lower pressing die 16, and the guide columns 15 are inserted into the butt joint holes 17.

[0048] In the embodiment, the cooperation of the guide columns 15 and the butt joint holes 17 enables the upper pressing die 13 to move along the axis of the guide columns 15 when the upper pressing die 13 is driven by the lifting appliance to make lifting motion, so as to limit the lifting path of the upper pressing die 13 and ensure that the upper pressing die 13 is accurately aligned with the lower pressing die 16 in the vertical direction. This not only helps to keep the accuracy of pressing, but also improves the operation efficiency and safety of the whole equipment. As can be seen, the accurate cooperation of the guide columns 15 and the butt joint holes 17 reduces the lateral motion of the upper pressing die 13, thereby avoiding unnecessary damage to the bridge piece.

[0049] Further, in order to prevent the upper die 13 from being lifted excessively and causing the guide column 15 to be pulled out of the docking hole 17, the utility model also comprises a lifting stopping assembly, specifically, the lifting stopping assembly comprises a sealing ring and a stop disc, the docking hole 17 is provided with the sealing ring in the opening, and the guide column 15 is provided with the stop disc at one end penetrating the docking hole 17, wherein the outer diameter of the stop disc is equal to the inner diameter of the opening of the docking hole 17.

[0050] It can be understood that, since the outer diameter of the stop disc is equal to the inner diameter of the opening of the docking hole 17, when the sealing ring is arranged in the docking hole 17, the inner diameter of the docking hole 17 can be reduced, so when the upper die 13 is lifted to a certain extent, the stop disc will be in contact with the sealing ring, thereby preventing the guide column 15 from moving upward further. In this way, the lifting action of the upper die 13 is effectively limited, ensuring the stability of the equipment during the die pressing process.

[0051] Embodiment three

[0052] On the basis of embodiment one, in order to prevent the path of the nose bridge strip from being inclined when being moved to the top of the support seat 6, the utility model also comprises a material moving groove 10 for guiding the moving direction of the nose bridge strip, specifically, the material moving groove 10 is arranged on the top of the support seat 6, and one end of the length direction of the material moving groove 10 faces the moving part, the material moving groove 10 guides the moving of the nose bridge strip on the top of the support seat 6, and the shearing table 8 is arranged on the top of the support seat 6 and is located at the other end of the length direction of the material moving groove 10.

[0053] In this embodiment, the arrangement of the material moving groove 10 plays a guiding role in the moving of the nose bridge strip on the top of the support seat 6. One end of the length direction of the material moving groove 10 faces the moving part, so that the nose bridge strip can accurately enter the shearing position. The material moving groove 10 and the shearing table 8 are distributed in a stepped manner, and the height of the material moving groove 10 is higher than that of the shearing table 8. When the nose bridge strip moves to the shearing position 9 in the material moving groove 10, it will naturally be located directly below the cutter 12 due to the height difference, which facilitates shearing.

[0054] Meanwhile, due to the existence of the height difference and the fact that the shearing position 9 is located directly below the cutter 12, when the cutter 12 descends and contacts the top of the shearing table 8, the shearing force generated between the cutter 12 and the shearing position 9 will be more concentrated, reducing the additional pressure on the nose bridge strip during shearing and helping to improve the shearing efficiency of the nose bridge strip.

[0055] In addition, during the transfer of the bridge, the bridge is prone to deviation in the wire slot 10 or to fall out of the wire slot 10 due to possible vibration or other external force interference. In order to improve the stability of the bridge during the transfer, a shielding wall 11 is arranged on the inner wall of the wire slot 10 to limit the bridge in the wire slot 10.

[0056] For example, the shielding wall 11 is arranged in an inclined manner. The inclined shielding wall 11 can effectively guide the bridge to move along a predetermined path and reduce deviation caused by vibration or external force interference.

[0057] In summary, in combination with examples one to three, the working steps of the bridge transfer and shearing mechanism are as follows:

[0058] First, the end of the bridge on the feeding wheel 2 is connected to the transfer part, at this time, the bridge is placed on the top of the lower pressing die 16. Then, the lifting appliance is started to drive the upper pressing die 13 to descend, so that the pressing wheel 14 on one side of the upper pressing die 13 is in close contact with the bridge, and the bridge is gradually flattened through the rolling and rolling action of the pressing wheel 14. At the same time, the cooperation of the guide column 15 and the butt joint hole 17 ensures the stability of the upper pressing die 13 during the lifting process, and the lifting stop assembly prevents the upper pressing die 13 from being lifted too much to cause the guide column 15 to fall out of the butt joint hole 17.

[0059] Subsequently, the driving feeding roller 4 starts to rotate under the driving of the driving part. Since the side of the driving feeding roller 4 and the side of the driven feeding roller 5 facing each other are in contact with the bridge, the bridge is smoothly transferred with the rotation of the driving feeding roller 4. During the transfer process, the bridge moves along the length direction of the wire slot 10 until it reaches the shearing position. The shielding wall 11 in the wire slot 10 limits the bridge to prevent it from deviating or falling off during the transfer process.

[0060] When the bridge moves to the shearing position 9, the punch 7 drives the cutter 12 to descend under the push of the cylinder to punch and shear the bridge on the shearing table 8. Since the shearing table 8 is located at the other end of the wire slot 10 and has a lower height than the wire slot 10, the bridge is naturally located directly below the cutter 12 under the action of the height difference, which facilitates shearing. At the same time, the shearing force generated between the cutter 12 and the shearing position 9 is more concentrated, which improves the shearing efficiency of the bridge.

[0061] Finally, the sheared bridge is collected for subsequent mask production. During the whole process, the bridge transfer and shearing mechanism realizes automatic transfer, flattening and shearing of the bridge, improves production efficiency, and ensures the uniformity of the sheared bridge size, which helps to improve the production quality of the mask.

[0062] The various embodiments described in this specification are presented for the purpose of illustration and description. Each of the embodiments highlights a different aspect of the disclosure, and the embodiments are presented separately for ease of understanding. The same or similar elements are common throughout the embodiments and can be referenced with the same or similar reference numerals throughout the description.

[0063] The above description of disclosed embodiments is intended to be illustrative and not restrictive. Many modifications of these embodiments by one having ordinary skill in the art are intended to be within the scope of the disclosure. The scope of the disclosure is not to be limited to the embodiments described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A nose strip transfer and cutting mechanism, comprising a frame (1), a feed wheel (2), a transfer section and a cutting section, the feed wheel (2), the transfer section and the cutting section being arranged in sequence and opposite to each other on the top of the frame (1), the feed wheel (2) being used to wind the nose strip, the nose strip extending from the feed wheel (2) to the transfer section, the nose strip extending from the feed wheel (2) being transferred to the cutting section by the transfer section, and the nose strip being cut by the cutting section, characterized in that, The material pressing assembly (3) is arranged between the feeding wheel (2) and the transferring part; The material pressing assembly (3) comprises: A lower pressing die (16) is fixed on the top of the frame (1), and the top of the lower pressing die (16) is in contact with the nose strip extending from the feeding wheel (2); An upper pressing die (13) is arranged above the lower pressing die (16), the upper pressing die (13) is detachable from the lower pressing die (16), and a lifting device is arranged on the side of the upper pressing die (13) away from the lower pressing die (16) to drive the upper pressing die (13) to move up and down reciprocatingly; The side of the upper pressing die (13) facing the lower pressing die (16) is provided with a material pressing wheel (14) to roll and press the nose strip on the top of the lower pressing die (16).

2. The nosepiece strip transfer and cutting mechanism of claim 1, wherein Further comprising: A guide column (15) is arranged on the side of the upper pressing die (13) facing the lower pressing die (16); A butt joint hole (17) is arranged on the top of the lower pressing die (16); The guide column (15) is inserted into the butt joint hole (17).

3. The nosepiece strip transfer and cutting mechanism of claim 2, wherein A sealing ring is arranged in the opening of the butt joint hole (17), and a stop disc is arranged on one end of the guide column (15) inserted into the butt joint hole (17), wherein the outer diameter of the stop disc is equal to the inner diameter of the opening of the butt joint hole (17).

4. The nosepiece strip transfer and cutting mechanism of claim 1, wherein The transferring part comprises a driving feeding roller (4) and a driven feeding roller (5) arranged oppositely, the end of the driving feeding roller (4) is provided with a driving member to drive the driving feeding roller (4) to rotate, and the side of the driving feeding roller (4) and the driven feeding roller (5) facing each other is in contact with the nose strip.

5. The nosepiece strip transfer and cutting mechanism of claim 1, wherein The shearing part comprises: A support seat (6) is arranged on the top of the frame (1), and the support seat (6) is used for receiving the nose strip transferred by the transferring part; A stamping member (7) is arranged above the support seat (6), and a cutter (12) is arranged on the side of the stamping member (7) facing the support seat (6), and the stamping member (7) drives the cutter (12) to stamp and shear the nose strip on the support seat (6).

6. The nosepiece strip transfer and cutting mechanism of claim 5, wherein, Further comprising: A material walking groove (10) is arranged on the top of the support seat (6), and one end of the material walking groove (10) in the length direction faces the transferring part, and the material walking groove (10) guides the nose strip on the top of the support seat (6) to be transferred; A shearing table (8) is arranged on the top of the support seat (6), and the shearing table (8) is located at the other end of the material walking groove (10) in the length direction; The material walking groove (10) and the shearing table (8) are arranged in a stepped manner, the height of the material walking groove (10) is higher than that of the shearing table (8), one end of the material walking groove (10) facing the shearing table (8) is provided with a shearing hole (9), and the shearing hole (9) is located directly below the cutter (12).

7. The nosepiece strip transfer and cutting mechanism of claim 6, wherein The inner wall of the feeding groove (10) is provided with a shielding wall (11), and the nose bridge strip in the feeding groove (10) is limited by the shielding wall (11).

8. The nosepiece strip transfer and cutting mechanism of claim 7, wherein, The shielding wall (11) is arranged in an inclined manner.

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