Masking paper cutting device

Abstract

The invention relates to a masking paper cutting device, and relates to the technical field of cutting, the cutting device comprises: a cutter provided with a paper roll wound with masking paper; the cutting platform is arranged on the machine body in a sliding manner and is used for clamping masking paper; the cutting head is used for cutting the masking paper; the cutting platform is close to the cutter and enables the masking paper to move into the cutting platform, the cutting platform clamps the masking paper and then gets away from the cutter, the cutting head cuts the masking paper, the masking paper with the needed size is obtained, and the masking paper is bonded to the plastic workpiece through the mechanical arm. The cutting platform is close to the paper roll, so that one end of the masking paper extends into the cutting platform, the cutting platform clamps one end of the masking paper and then is away from the cutter and the paper roll, the masking paper is pulled out by a section, the cutting head cuts the masking paper, and the cutting platform loosens clamping of the masking paper; and the mechanical arm can grab the masking paper and adhere the masking paper to the plastic workpiece, so that the spraying quality and efficiency of the plastic workpiece are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of cutting, in particular to a masking paper cutting device. BACKGROUND

[0002] After a plastic workpiece is injection molded, a paint spraying process needs to be performed, in order to avoid the influence of a paint surface on some key positions, masking paper needs to be attached to the positions for paint spraying shielding.

[0003] A traditional operation mode highly depends on manual cutting, positioning and attaching of the masking paper by an operator, manual operation leads to size differences in cutting, and is prone to cause paint leakage or blurred color separation areas, resulting in shielding failure and the need for rework, and manual operation is prone to contaminate the adhesive surface of the masking paper, affecting the attaching quality, therefore, a masking paper cutting device capable of more accurate and efficient cutting is needed to cooperate with a mechanical hand, so that the masking paper can be accurately attached to the plastic workpiece, and the paint spraying quality and efficiency of the plastic workpiece are improved. SUMMARY

[0004] In order to improve the paint spraying quality and efficiency of the plastic workpiece, the application provides a masking paper cutting device.

[0005] The application provides a masking paper cutting device, which adopts the following technical scheme: A masking paper cutting device comprises: A cutter is arranged on a machine body and is provided with a paper roll on which masking paper is wound; A cutting platform is arranged on the machine body and is used for clamping the masking paper and is slidable in a direction close to or away from the cutter; A cutting head is used for cutting the masking paper; the cutting platform is close to the cutter and moves the masking paper into the cutting platform, the cutting platform is away from the cutter after clamping the masking paper, the cutting head cuts the masking paper to obtain masking paper of a required size, and a mechanical hand is used to bond the masking paper to a plastic workpiece.

[0006] By adopting the above technical scheme, the paper roll is installed on the cutter, the cutting platform is close to the paper roll, one end of the masking paper is moved into the cutting platform, the cutting platform is away from the cutter and the paper roll after clamping one end of the masking paper, the masking paper is pulled out, the cutting head cuts the masking paper, the cutting platform releases the clamping of the masking paper, and the mechanical hand can grasp the masking paper and bond the masking paper to the plastic workpiece, thereby improving the paint spraying quality and efficiency of the plastic workpiece.

[0007] Optionally, the device further comprises a bonding paper arranged on the cutting platform and the cutting head, and bonded to a bonding surface to facilitate removal of the masking paper.

[0008] By adopting the technical scheme, the bonding paper is fixedly installed on the cutting platform and the cutting head, so that when the embossed paper is clamped, the bonding surface is bonded to the bonding paper, after cutting is completed, the mechanical hand adsorbs and grabs the upper surface of the embossed paper, the mechanical hand pulls the embossed paper to move upward and separate from the bonding paper, the bonding paper can reduce damage to the bonding surface caused by clamping, the bonding paper and the bonding surface are convenient to separate, and the subsequent mechanical hand is convenient to grab and convey the bonding paper, so that the precision and firmness of the embossed paper bonded to the plastic workpiece are improved, and the spraying quality and efficiency of the plastic workpiece are improved.

[0009] Optionally, the cutter comprises: a plurality of supporting wheels rotatably arranged on the machine body; the paper roll is placed on the plurality of supporting wheels; a guide roller rotatably arranged on the cutter and used for guiding the output embossed paper and making the bonding surface of the embossed paper face downward; a tensioning assembly positioned on the inner ring of the paper roll under the action of elastic force.

[0010] By adopting the technical scheme, the guide roller is used for guiding the embossed paper when the embossed paper moves, so that the embossed paper moves according to the designed path, and the bonding surface faces downward, so that the mechanical hand is convenient to bond the embossed paper to the plastic workpiece after grabbing, so that the embossed paper is more stable and reliable in the bonding process, and the spraying quality and efficiency of the plastic workpiece are improved.

[0011] After the tensioning assembly is separated from the paper roll, the paper roll can be replaced, after replacement is completed, the tensioning assembly makes the embossed paper roll in a tensioning state, so that the precision of the embossed paper after cutting is greatly improved, and the spraying quality and efficiency of the plastic workpiece are further improved.

[0012] Optionally, the tensioning assembly comprises: a tensioning rod rotatably arranged on the machine body through a rotating shaft, the rotating shaft is parallel to the axis of the paper roll; a rotating rod rotatably arranged on one end of the tensioning rod close to the paper roll, and the rotating direction of the rotating rod is perpendicular to the axis of the rotating shaft; a tensioning wheel rotatably arranged on the other end of the rotating rod away from the tensioning rod, and the rotating direction of the tensioning wheel is parallel to the axis of the paper roll, when the rotating rod drives the tensioning wheel to rotate to the inner side or the outer side of the paper roll, the rotating rod is positioned in cooperation with the tensioning rod; a tension spring connected with the tensioning rod and the machine body respectively and driving the tensioning wheel to keep close to the paper roll; a positioning block arranged on the machine body, after the rotating rod drives the tensioning wheel to rotate to the outer side of the paper roll, the rotating rod is positioned on the positioning block under the action of the tension of the tension spring, after the tensioning wheel rotates to the inner side of the paper roll, the tensioning wheel is positioned on the inner ring of the paper roll under the action of the tension of the tension spring.

[0013] By adopting the technical scheme, the paper roll is placed on the plurality of supporting wheels for supporting and positioning, the tensioning wheel is pressed on the inner circle of the paper roll under the tension of the tension spring for positioning, the embossed paper is pulled to rotate the paper roll when moving, the paper roll drives the plurality of supporting wheels to rotate, the tensioning wheel generates pressure on the paper roll and makes the embossed paper be tensioned, so that the embossed paper is tensioned.

[0014] Meanwhile, the tensioning rod drives the tensioning wheel to press on the inner circle of the paper roll, the thickness of the paper roll becomes smaller, the tensioning rod rotates under the action of the tension spring, the tensioning rod drives the tensioning wheel to rotate at the same time, and the tensioning wheel rolls on the inner circle of the paper roll, so that the abutting point of the tensioning wheel and the inner circle of the paper roll moves upward. Compared with the vertical movement of the tensioning wheel under the action of the elastic force, the movement distance of the tensioning wheel can be reduced, the pressure on the paper roll can be better maintained, even if the pressure changes, the change is small, the tensioning force on the paper roll can be well maintained after the thickness of the paper roll changes, and the spraying efficiency and effect of the plastic workpiece are improved.

[0015] When the paper roll needs to be removed, the tensioning rod is pulled to drive the rotating rod to rotate and drive the tensioning wheel to rotate, so that the tensioning wheel is rotated to the outside of the paper roll. The rotating rod is clamped and installed on the tensioning rod for positioning, the tensioning rod is loosened, the rotating rod is pressed on the positioning block under the action of the tension spring for positioning, then the paper roll can be replaced, after replacement, the tensioning rod is pushed to rotate back, so that the tensioning wheel is rotated to the inside of the paper roll. The tensioning rod is continuously clamped and installed on the tensioning rod for positioning, and the tensioning wheel is pressed on the inner circle of the paper roll under the action of the tension of the tension spring for positioning, so that the replacement of the paper roll is realized, and the convenience of replacing the paper roll is improved.

[0016] Meanwhile, the rotating direction of the rotating rod and the tensioning rod is perpendicular to each other, the rotating rod is clamped and installed on the rotating rod, and the tensioning wheel is pressed on the paper roll, or the rotating rod is pressed on the positioning block, the tension of the tension spring can increase the friction between the rotating rod and the tensioning rod, so that the stability of the position of the rotating rod is increased, the positioning of the rotating rod can be realized without the locking structure, and the spraying efficiency and effect of the plastic work are improved.

[0017] Optionally, the cutting platform comprises: The moving seat is slidably arranged on the machine body in the direction of approaching or moving away from the cutter; The fixed seat is arranged on the machine body and located between the moving seat and the cutting head, and the fixed seat and the cutting head cooperate to support the embossed paper and realize cutting. The two ends of the adhesive paper are arranged on the fixed seat and the moving seat, and a downwardly hanging buffer section is formed between the moving seat and the fixed seat. When the moving seat moves farthest from the fixed seat, the buffer section is pulled to a horizontal state and adheres to the adhesive surface to protect the adhesive surface. The moving member is used to drive the moving seat to move. The clamping assembly is rotatably arranged on the moving seat and used to clamp and position the embossed paper.

[0018] By adopting the above technical solution, the moving component starts and drives the moving seat and clamping assembly to approach the paper roll and cutter. The clamping assembly is in the open state. The masking paper passes through from above the fixed seat and moves to above the moving seat. The clamping assembly rotates and cooperates with the moving seat to clamp and position the masking paper. The moving component starts and drives the moving seat and clamping assembly to move back, thereby pulling out a section of the masking paper. Then, the fixed seat and the cutting head cooperate to support the masking paper and cut it. After the cutting is completed, the clamping assembly rotates away from the masking paper to unlock it. The robot arm starts to grab and transport the masking paper.

[0019] The fixed base and the cutting head work together to support both sides of the masking paper during cutting, improving the accuracy of the cut masking paper. At the same time, the clamping component rotates to clamp and position the masking paper. After the clamping component releases its grip on the masking paper, it reduces the obstruction effect of the clamping component on the masking paper, making it easier for the robot to grasp and transport the masking paper, thus further improving the cutting efficiency and effect, and improving the spraying efficiency and effect of plastic workpieces.

[0020] The adhesive paper is placed on the fixed seat and the movable seat. The adhesive paper adheres to the bonding surface, thereby reducing the risk of damage to the bonding surface and making the masking paper adhere to the plastic workpiece more firmly. At the same time, when the movable seat is close to the fixed seat and the paper roll, the adhesive paper can enter the space between the fixed seat and the movable seat to provide buffering. When the movable seat moves away from the fixed seat, the buffer section moves upward until it is pulled to a horizontal state, which allows the adhesive paper to adhere to the bonding surface and prevent external impurities from moving to the bonding surface. Then, the robot arm grabs and conveys the masking paper, causing the masking paper to detach from the adhesive paper, further improving the firmness of the masking paper's adhesion to the plastic workpiece and improving the spraying efficiency and effect of the plastic workpiece.

[0021] Optionally, the clamping assembly includes: The clamping arm is rotatably mounted on the movable base; A rotating component is used to drive the clamping arm to rotate, so that the clamping arm cooperates with the moving seat to clamp and position the masking paper, or the clamping arm rotates to the outside of the moving seat to facilitate the robot arm to remove the masking paper.

[0022] By adopting the above technical solution, the rotating component drives the clamping arm to rotate, so that the clamping arm rotates to the top of the moving seat and cooperates with the moving seat to clamp the masking paper. Alternatively, the rotating component drives the clamping arm to rotate to the outside of the moving seat, thereby releasing the clamping of the masking paper and leaving room for the robot arm to grab and transport the masking paper, thus improving the spraying efficiency and effect of plastic workpieces.

[0023] Optionally, the clamping arm is provided with an elastic layer that presses against the masking paper.

[0024] By adopting the above technical solution, the masking paper can be better clamped, and the risk of damage due to excessive pressure on the masking paper can be reduced.

[0025] Optionally, a downward-sloping buffer surface is provided between the cutting platform and the cutting head to allow the adhesive paper to pass through and form a drooping state.

[0026] By adopting the above technical solution, the buffer surface facilitates the entry of the buffer section between the moving seat and the fixed seat, reducing the risk that the buffer section will move above the moving seat and the fixed seat and block the entry of the masking paper, thus making the cutting process more stable.

[0027] Optionally, the machine body is provided with two protective plates, which abut against both sides of the adhesive paper for protection.

[0028] By adopting the above technical solution, the protective plate achieves protection, thereby further reducing the risk of impurities migrating to the bonding surface and improving the efficiency and effect of plastic workpiece spraying.

[0029] Optionally, the cutting head is located between the cutter and the fixed base, and the cutting head includes: A cutting seat is slidably disposed on the machine body in a direction close to or away from the cutter, and the adhesive paper is disposed on the upper surface of the cutting seat; The sliding base is vertically slidably mounted on the machine body; The cutter is vertically slidably mounted on the slide seat and is used to cut masking tape; The adsorption component is disposed on the lower surface of the sliding seat and adsorbs the masking paper on the side away from the adhesive surface. The sliding seat moves downward, causing the adsorption component to adhere to the surface of the masking paper and the adhesive paper to adhere to the adhesive surface for positioning. The masking paper is supported by the cutting seat and the fixing seat. The cutter moves downward to cut the masking paper. The sliding seat and the adsorption component move upward, driving the masking paper to detach from the adhesive paper and pulling out a section of the masking paper. After the cutting seat approaches the cutter, the sliding seat moves downward, causing the adhesive surface to adhere to the adhesive paper for positioning. The adsorption component unlocks and moves upward under the drive of the sliding seat. The cutting seat moves back to its original position and drives the masking paper to move to the side of the fixing seat near the moving seat.

[0030] By adopting the above technical solution, when cutting is required, the cutting platform clamps and tensions the masking paper, the sliding seat moves down and cooperates with the cutting seat to clamp the masking paper, and the adsorption component adsorbs and positions the masking paper. The cutter moves down to cut the masking paper, the robot arm grabs and transports the cut masking paper, the sliding seat drives the adsorption component to grab the masking paper and move it up at the same time, the masking paper separates from the adhesive paper, and the adsorption component pulls the masking paper to move, thereby pulling out a section of masking paper.

[0031] The moving component drives the cutting seat to approach the paper roll, the sliding seat moves down to drive the masking paper to move down and adhere to the adhesive paper, the adsorption component unlocks, the sliding seat drives the adsorption component to move up and detach from the masking paper, the moving component drives the cutting seat to move back away from the paper roll, the cutting seat moves back to drive the masking paper to move from above the fixed seat to the side of the fixed seat close to the cutting platform, thus facilitating the cutting platform to clamp and transport one end of the masking paper, improving the spraying efficiency and effect of plastic workpieces.

[0032] When the adsorption component moves upward, it pulls out a section of masking paper for buffering, so that when the cutting seat moves back to transport the masking paper, the force between the adhesive surface and the adhesive paper is small. This makes it easier to transport the masking paper from the cutting seat to the side of the fixed seat near the cutting platform. Then, when the cutting platform clamps the masking paper for transport, it can continue to tighten the masking paper, thereby further improving the spraying efficiency and effect of plastic workpieces.

[0033] Optionally, the adsorption component includes: Multiple suction cups are mounted on the sliding base; The control unit controls the connection or disconnection of multiple suction cups with the outside world.

[0034] By adopting the above technical solution, the control component connects the suction cup to the outside world, allowing the air inside the suction cup to be expelled. After the suction cup is attached to the masking tape, the control component disconnects multiple suction cups from the outside world, thus enabling the suction cup to be attached to the masking tape for positioning. When it is necessary to release the attachment, the control component connects the suction cup to the outside world, allowing air to enter the suction cup. The sliding seat moves to drive the suction cup to detach from the masking tape, realizing the attachment and positioning of the masking tape or the unlocking of the attachment.

[0035] In summary, this application includes at least one of the following beneficial technical effects: 1. By bringing the cutting platform close to the paper roll, one end of the masking tape extends into the cutting platform. After the cutting platform clamps one end of the masking tape and moves away from the cutter and paper roll, the masking tape is pulled out. The cutting head then cuts the masking tape. The cutting platform releases its grip on the masking tape, and the robotic arm can then pick up the masking tape and stick it onto the plastic workpiece, thereby improving the coating quality and efficiency of the plastic workpiece.

[0036] 2. By fixing the masking tape to the cutting platform and cutting head, the adhesive side adheres to the masking tape when it is clamped. After cutting, the robot arm adsorbs and grasps the upper surface of the masking tape, pulling the masking tape upwards to detach it from the adhesive tape. The adhesive tape reduces damage to the adhesive surface during clamping, and the easy detachment of the adhesive tape from the adhesive surface also facilitates subsequent gripping and conveying of the adhesive tape by the robot arm. This improves the accuracy and firmness of the masking tape adhering to the plastic workpiece, thereby improving the coating quality and efficiency of the plastic workpiece.

[0037] 3. By setting the adhesive paper on the fixed seat and the movable seat, the movable seat moves away from the fixed seat, allowing the adhesive paper to adhere to the bonding surface and preventing external impurities from moving to the bonding surface. Then, the robot arm grabs and conveys the masking paper, causing the masking paper to separate from the adhesive paper, which further improves the firmness of the masking paper on the plastic workpiece and improves the spraying efficiency and effect of the plastic workpiece. Attached Figure Description

[0038] Figure 1 This is a three-dimensional structural diagram of the cutting device; Figure 2 yes Figure 1 A cross-sectional schematic diagram of AA in the middle; Figure 3 yes Figure 2 Enlarged diagram of section B; Figure 4 This is a structural diagram of the protective components, paper roll, and cutter in the cutting device; Figure 5 This is a schematic diagram of the protective components and the cutter in the cutting device, which is currently in the paper roll removal state.

[0039] Reference numerals: 1. Body; 11. Protective component; 12. Protective chamber; 13. Masking tape; 14. Adhesive surface; 15. Adhesive paper; 16. Paper roll; 2. Cutter; 21. Support wheel; 22. Guide roller; 3. Tensioning assembly; 31. Tensioning rod; 32. Rotating rod; 321. Snap-fit ​​part; 322. Rotating part; 33. Tensioning wheel; 34. Tension spring; 35. Positioning block; 36. Rotating shaft; 37. Snap-fit ​​groove; 4. Cutting platform; 41. Moving seat; 42. Fixed seat; 43. Moving component; 44. Clamping assembly; 45. Clamping arm; 5. Cutting head; 51. Cutting seat; 52. Sliding seat; 53. Cutter; 55. Suction cup; 56. Control tube. Detailed Implementation

[0040] The following provides a further detailed description of this application.

[0041] This application discloses a masking paper cutting device.

[0042] Reference Figures 1-3A masking tape cutting device includes a cutter 2, a cutting platform 4, a cutting head 5, and adhesive paper 15. The cutter 2 is mounted on a machine body 1 and has a paper roll 16 containing masking tape 13 installed on it. The cutting platform 4 is slidably mounted on the machine body 1 in a direction close to or away from the cutter 2 and is used to clamp the masking tape 13. The cutting head 5 is used to cut the masking tape 13. The cutting platform 4 is close to the cutter 2, causing the masking tape 13 to move into the cutting platform 4. After clamping the masking tape 13, the cutting platform 4 moves away from the cutter 2 to pull out a section of masking tape 13. The cutting head 5 cuts the masking tape... Paper 13 is cut to obtain masking paper 13 of the required size, and then the masking paper 13 is bonded to the plastic workpiece by a robotic arm; adhesive paper 15 is placed on the cutting platform 4 and the cutting head 5, and the adhesive paper 15 is bonded and positioned with the adhesive surface 14, so that the masking paper 13 can be easily removed; the adhesive paper 15 is release paper, so that the adhesive paper 15 is bonded and positioned with the adhesive surface 14, and is used to protect the adhesive surface 14. The adhesive paper 15 and the masking paper 13 move simultaneously, and the adhesive paper 15 can be separated from the adhesive surface 14 under a certain force, that is, the adhesive paper 15 is easy to tear.

[0043] A protective component 11 is fixedly installed on the upper surface of the body 1. A protective chamber 12 is formed inside the protective component 11 and communicates with the top of the protective component 11. The protective chamber 12 is opened along the length direction of the protective component 11 and the body 1. The cutter 2 is installed on one end of the protective component 11, and the cutting platform 4 is located at the other end of the protective component 11. The cutting head 5 is located between the cutter 2 and the cutting platform 4.

[0044] Reference Figures 1-4 The cutter 2 includes multiple support wheels 21, guide rollers 22, and tensioning assembly 3. The multiple support wheels 21 are horizontally positioned and spaced apart. The support wheels 21 are rotatably mounted on two protective members 11 and located inside a protective chamber 12. A paper roll 16 is placed on the multiple support wheels 21 for positioning, and both ends of the paper roll 16 abut against the protective chamber 12 for positioning. The guide rollers 22 are rotatably mounted on the two protective members 11 and located on the protective chamber 12, below the multiple support wheels 21. The guide rollers 22 are located near the cutting platform 4. The masking tape 13 on the paper roll 16 passes under the guide rollers 22. The guide rollers 22 guide the movement of the masking tape 13, so that the adhesive surface 14 of the masking tape 13 is facing downwards.

[0045] Reference Figures 4-5The tensioning assembly 3 is positioned by pressing against the inner ring of the paper roll 16 under the action of elastic force. The tensioning assembly 3 includes a tensioning rod 31, a rotating rod 32, a tensioning wheel 33, a tension spring 34, and a positioning block 35. One end of the tensioning rod 31 is rotatably mounted on the side wall of the protective part 11 away from the support wheel 21, and the other end of the tensioning rod 31 extends upward at an angle to the paper roll 16. The rotation direction of the tensioning rod 31 is parallel to the direction of the support wheel 21. A snap-fit ​​groove 37 is opened at the top of the tensioning rod 31, and a rotating shaft 36 is fixedly installed on the snap-fit ​​groove 37. The axis of the rotating shaft 36 is perpendicular to the axis of the support wheel 21.

[0046] The rotating rod 32 includes a snap-fit ​​part 321 and a rotating part 322 connected in sequence. The snap-fit ​​part 321 is square and engages with the snap-fit ​​groove 37 and extends to the outside of the snap-fit ​​groove 37. The rotating part 322 is cylindrical. The tension wheel 33 is rotatably mounted on the end of the rotating part 322 away from the snap-fit ​​part 321, and the axis of the tension wheel 33 is parallel to the axes of the support wheel 21 and the paper roll 16. The tension spring 34 is connected to the protective member 11 and the tension rod 31 respectively, so that the rotating rod 32 and the tension wheel 33 tend to be close to the inner ring of the paper roll 16, and the tension wheel 33 is pressed against the inner ring of the paper roll 16 for positioning. At the same time, when the tension wheel 33 presses against the inner ring of the new paper roll 16, the contact point between the tension wheel 33 and the inner ring of the paper roll 16 is located at the lowest point of the inner ring of the paper roll 16. The positioning block 35 is fixedly mounted on the side wall of the protective member 11 and located below the rotating rod 32.

[0047] Rotating the rotating rod 32 causes both the rotating rod 32 and the tension wheel 33 to rotate to the inside of the paper roll 16, so that the locking part 321 engages with the locking groove 37 for positioning. Releasing the rotating rod 32 allows the tension wheel 33 to press against the inner ring of the paper roll 16 for positioning under the tension of the tension spring 34. Alternatively, pushing the rotating rod 32 causes the tension wheel 33 to move away from the inner ring of the paper roll 16, and then pushing the rotating rod 32 causes the tension wheel 33 to rotate to the outside of the paper roll 16. The locking part 321 continues to engage with the locking groove 37 for positioning. Releasing the rotating rod 32 allows the rotating part 322 to press against the top of the positioning block 35 for positioning under the tension of the tension spring 34. Then the paper roll 16 can be replaced. Repeating the above actions allows the tension wheel 33 to continue pressing against the inner ring of the paper roll 16 for positioning.

[0048] Reference Figures 1-3The cutting platform 4 includes a movable base 41, a fixed base 42, a clamping assembly 44, and a moving component 43. The movable base 41 is horizontally slidably mounted on the upper surface of the machine body 1 and located on one side of the protective component 11, with the sliding direction of the movable base 41 being closer to or further away from the cutter 2. The fixed base 42 is fixedly mounted on the machine body 1 and located on the side close to the protective component 11, with the fixed base 42 positioned between the movable base 41 and the protective component 11. The upper surfaces of the fixed base 42 and the movable base 41 are flush. The clamping assembly 44 is rotatably mounted on the movable base 41. The masking paper 13 extends from above the fixed base 42 to above the movable base 41, and the clamping assembly 44 is activated to clamp and position the masking paper 13. The moving component 43 is an electric push rod, which is fixedly mounted on the upper surface of the machine body 1. The piston rod of the moving component 43 is fixedly connected to the movable base 41, and the moving component 43 is used to drive the movable base 41 to move.

[0049] One end of the adhesive paper 15 is fixedly installed on the top of the fixed base 42, and the other end is fixedly installed on the upper surface of the movable base 41. The width of the adhesive paper 15 is equal to the width of the masking tape 13. When the movable base 41 moves to the furthest distance from the fixed base 42, the adhesive paper 15 is pulled to a horizontal state. After the movable base 41 approaches the fixed base 42, the adhesive paper 15 located between the fixed base 42 and the movable base 41 forms a drooping buffer section. When the movable base 41 moves to the closest point to the fixed base 42, the buffer section is squeezed by the movable base 41 and the fixed base 42 to form two sections that abut against each other for positioning. An inclined downward guide surface is provided on the upper surface of the fixed base 42 and the movable base 41 on the side that is close to each other. The guide surface facilitates the drooping state of the adhesive paper 15.

[0050] The clamping assembly 44 includes a clamping arm 45 and a rotating component. The clamping arm 45 is rotatably mounted on the side wall of the movable seat 41. The rotating component is an electric actuator, with both ends rotatably mounted on the side wall of the movable seat 41 and rotatably connected to the clamping arm 45. The rotating component drives the clamping arm 45 to rotate above the fixed seat 42 and cooperates with the movable seat 41 to clamp and position the masking tape 13. Alternatively, it drives the clamping arm 45 to rotate to the outside of the movable seat 41 to unlock the masking tape 13 and reduce the risk of interference between the clamping arm 45 and the robotic arm when grasping the masking tape 13. An elastic layer that abuts against the masking tape 13 is fixedly installed on the clamping arm 45.

[0051] The cutting head 5 is located on the protective component 11 and inside the protective chamber 12. The cutting head 5 includes a cutting seat 51, a sliding seat 52, a cutter 53, and an adsorption assembly. The cutting seat 51 is horizontally slidably mounted on the upper surface of the machine body 1 and located inside the protective chamber 12. The sliding direction of the cutting seat 51 is parallel to the sliding direction of the moving seat 41. At the same time, the cutting seat 51 is located between the guide roller 22 and the fixed seat 42. The adhesive paper 15 is fixedly mounted on the upper surface of the cutting seat 51. The sliding seat 52 is vertically slidably mounted on the protective component 11 and located inside the protective chamber 12. The top ends of the sliding seat 52 and the fixed seat 42 are flush. The cutter 53 is vertically slidably mounted on the sliding seat 52.

[0052] A drive component for moving the cutting seat 51 is fixedly installed on the upper surface of the body 1. A drive component for moving the sliding seat 52 is fixedly installed on the protective part 11. A drive component for moving the cutting blade 53 is fixedly installed on the sliding seat 52. All three drive components can be electric push rods. The gap between the fixed seat 42 and the sliding seat 52 allows the cutting blade 53 to enter and cut the masking paper 13.

[0053] The adsorption assembly is mounted on the sliding seat 52 and adsorbs the masking tape 13 on the side away from the adhesive surface 14. The adsorption assembly includes multiple suction cups 55 and a control component. Multiple mounting slots are spaced apart on the lower surface of the sliding seat 52. The multiple suction cups 55 are fixedly mounted on the multiple mounting slots. The suction cups 55 are made of elastic material, such as rubber. The multiple suction cups 55 are connected through multiple control pipes 56. The multiple control pipes 56 are interconnected, and the control component is a control valve fixedly mounted on the connected control pipes 56. When the control valve is opened, the sliding seat 52 moves down, driving the multiple suction cups 55 to press against the masking tape 13, so that the air in the multiple suction cups 55 is discharged through the control pipes 56. Then the control valve is closed, so that the multiple suction cups 55 are adsorbed on the upper surface of the masking tape 13 for positioning. When it is necessary to release the adsorption, the control valve opens the control pipes 56, the sliding seat 52 moves up, so that the air enters the multiple suction cups 55 through the control pipes 56, thereby releasing the adsorption.

[0054] The working principle of this application embodiment is as follows: When cutting is required, the masking paper 13 is clamped by the cutting platform 4 and is in a taut state. The cutting seat 51 and the fixed seat 42 support the masking paper 13. The sliding seat 52 moves down and cooperates with the cutting seat 51 to clamp the masking paper 13. Multiple suction cups 55 are used to adsorb and position the masking paper 13. The cutter 53 moves down to cut the masking paper 13. The robot grabs and transports the cut masking paper 13. The sliding seat 52 drives multiple suction cups 55 and the masking paper 13 to move up at the same time. The masking paper 13 is separated from the adhesive paper 15. At the same time, the masking paper 13 is pulled out. The length of the pulled-out masking paper 13 is less than the required length of the cut masking paper 13. This allows the cutting platform 4 to pull the paper roll 16 to rotate when clamping and transporting the masking paper 13. This ensures that the masking paper 13 pulled out by the cutting platform 4 is in a taut state, which improves the accuracy of the cut masking paper 13.

[0055] The cutting seat 51 approaches the paper roll 16, the sliding seat 52 moves down to drive the masking tape 13 to move down, so that the adhesive surface 14 is adhered to the adhesive paper 15, the multiple suction cups 55 are unlocked, the sliding seat 52 drives the multiple suction cups 55 to move up, the multiple suction cups 55 can be separated from the masking tape 13 under the action of elasticity, the moving part 43 drives the cutting seat 51 to move back away from the paper roll 16, the cutting seat 51 moves back to drive the masking tape 13 to move from above the fixed seat 42 to the side of the fixed seat 42 close to the cutting platform 4.

[0056] The movable seat 41 moves closer to the fixed seat 42, causing the masking paper 13 to move above the movable seat 41. The clamping arm 45 rotates above the movable seat 41 and works with the movable seat 41 to clamp and position the masking paper 13. The movable seat 41 starts to pull the masking paper 13 to move, and the adhesive paper 15 extends to a horizontal state. The adhesive paper 15 is adhered to the adhesive surface 14 for protection. Then the cutting is repeated, thereby improving the quality and efficiency of the masking paper 13 cutting and improving the quality and efficiency of plastic workpiece spraying.

[0057] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A masking tape cutting device, characterized in that: include: The cutter (2) is mounted on the machine body (1) and has a paper roll (16) with masking tape (13) on it. The cutting platform (4) is slidably mounted on the machine body (1) in a direction close to or away from the cutter (2) and is used to hold the masking paper (13). The cutting head (5) is used to cut the masking paper (13); the cutting platform (4) is close to the cutter (2) and moves the masking paper (13) into the cutting platform (4). The cutting platform (4) clamps the masking paper (13) and moves away from the cutter (2). The cutting head (5) cuts the masking paper (13) and obtains the required size of the masking paper (13). The masking paper (13) is then bonded to the plastic workpiece by a robotic arm.

2. The masking paper cutting device according to claim 1, characterized in that: It also includes adhesive paper (15), which is placed on the cutting platform (4) and the cutting head (5) and is bonded and positioned to the adhesive surface (14) to facilitate the removal of masking tape (13).

3. The masking paper cutting device according to claim 2, characterized in that: The cutter (2) includes: Multiple support wheels (21) are rotatably mounted on the machine body (1); the paper roll (16) is placed on the multiple support wheels (21); Guide roller (22) is rotatably mounted on cutter (2) and is used to guide the output masking tape (13) so that the adhesive surface (14) of the masking tape (13) is facing down; The tensioning component (3) is positioned by pressing against the inner ring of the paper roll (16) under the action of elasticity.

4. The masking paper cutting device according to claim 3, characterized in that: Also includes: The tensioning component (3) includes: The tension rod (31) is rotatably mounted on the machine body (1) via a rotating shaft (36), which is parallel to the axis of the paper roll (16); The rotating rod (32) is rotatably mounted on the end of the tensioning rod (31) near the paper roll (16) and the direction of rotation is perpendicular to the axis of the rotating shaft (36); The tension wheel (33) is rotatably mounted on the end of the rotating rod (32) away from the tension rod (31) and its rotation direction is parallel to the axis of the paper roll (16). When the rotating rod (32) drives the tension wheel (33) to rotate to the inside or outside of the paper roll (16), the rotating rod (32) engages with the tension rod (31) for positioning. A tension spring (34) is connected to the tension rod (31) and the machine body (1) respectively and drives the tension wheel (33) to keep it close to the paper roll (16); A positioning block (35) is set on the machine body (1); after the rotating rod (32) drives the tension wheel (33) to rotate to the outside of the paper roll (16), the rotating rod (32) presses against the positioning block (35) under the tension of the tension spring (34) for positioning; after the tension wheel (33) rotates to the inside of the paper roll (16), the tension wheel (33) presses against the inner ring of the paper roll (16) under the tension of the tension spring (34) for positioning.

5. The masking paper cutting device according to claim 2, characterized in that: The cutting platform (4) includes: The movable seat (41) is slidably mounted on the machine body (1) in a direction close to or away from the cutter (2); A fixed seat (42) is set on the machine body (1) and located between the movable seat (41) and the cutting head (5). The fixed seat (42) and the cutting head (5) cooperate to support the masking tape (13) and cut it. The adhesive paper (15) is set on the fixed seat (42) and the movable seat (41) at both ends, so that a drooping buffer section is formed between the movable seat (41) and the fixed seat (42). The buffer section is pulled to a horizontal state and adhered to the adhesive surface (14) when the movable seat (41) moves to the farthest distance from the fixed seat (42), thereby protecting the adhesive surface (14). The movable component (43) is used to drive the movable base (41) to move; The clamping assembly (44) is rotatably mounted on the movable seat (41) and is used to clamp and position the masking tape (13).

6. The masking paper cutting device according to claim 5, characterized in that: The clamping assembly (44) includes: The clamping arm (45) is rotatably mounted on the movable seat (41); A rotating component is used to drive the clamping arm (45) to rotate, so that the clamping arm (45) cooperates with the moving seat (41) to clamp and position the masking paper (13).

7. The masking paper cutting device according to claim 6, characterized in that: The clamping arm (45) is provided with an elastic layer that presses against the masking paper (13).

8. The masking tape cutting device according to claim 5, characterized in that: Both the cutting platform (4) and the cutting head (5) have a downward-sloping buffer surface for the adhesive paper (15) to pass through, forming a drooping state.

9. A masking tape cutting device according to claim 5, characterized in that: The cutting head (5) is located between the cutter (2) and the fixed base (42), and the cutting head (5) includes: The cutting seat (51) is slidably disposed on the machine body (1) in a direction close to or away from the cutter (2), and the adhesive paper (15) is disposed on the upper surface of the cutting seat (51); The sliding seat (52) is vertically slidably mounted on the body (1); The cutter (53) is vertically slidably mounted on the slide seat (52) and is used to cut the masking tape (13); The adsorption assembly is disposed on the lower surface of the sliding seat (52) and adsorbs the masking tape (13) on the side away from the adhesive surface (14); The sliding seat (52) moves down, causing the adsorption component to adsorb onto the upper surface of the masking paper (13) and the adhesive paper (15) to adhere to the adhesive surface (14) for positioning. The masking paper (13) is supported by the cutting seat (51) and the fixing seat (42). The cutter (53) moves down to cut the masking paper (13). The sliding seat (52) and the adsorption component move up, driving the masking paper (13) to detach from the adhesive paper (15) and pulling out a section of the masking paper (13). After the cutting seat (51) approaches the cutter (2), the sliding seat (52) moves down, causing the adhesive surface (14) to adhere to the adhesive paper (15) for positioning. The adsorption component is unlocked and moves up under the drive of the sliding seat (52). The cutting seat (51) moves back to its original position and drives the masking paper (13) to move to the side of the fixing seat (42) near the moving seat (41).

10. A masking tape cutting device according to claim 9, characterized in that: The adsorption component includes: Multiple suction cups (55) are mounted on the sliding base (52); The control unit controls the connection or disconnection of multiple suction cups (55) with the outside world.

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