Mesh oblique pulling process

Abstract

The present invention discloses a mesh oblique pulling process, comprising the following steps: using a pair of manipulators to respectively clamp a pair of opposite sides of a rectangular steel mesh; then moving the pair of manipulators away from each other until the steel mesh is stretched and tightened; then rotating the pair of manipulators synchronously to stretch the mesh of the steel mesh from a square to a rhombus, and making the angle of a pair of acute angles in the rhombus mesh reach a predetermined angle range. The present invention uses a pair of manipulators to stretch the steel mesh, and can stretch the mesh of the steel mesh from a square to a rhombus. The present invention uses manipulators to replace manpower, which can produce more efficiently and stabilize the quality of the stretched mesh. The present invention can more accurately control the stretching angle, reduce labor costs, and ensure that the quality of the mesh is above a certain level, so that the subsequent process can reduce the error value. The present invention uses a manipulator to stretch the mesh, which minimizes human factors, can increase production capacity and improve production rate.

Description

Technical Field

[0001] The invention relates to a mesh oblique drawing process. Background Art

[0002] Screen printing requires a screen, which is mainly composed of a steel mesh, a polymer film, and a screen frame. Existing screens basically use a square mesh, that is, the weft and warp in the steel mesh are perpendicular to each other. However, using a diamond mesh to prepare the screen is also an option. This requires stretching the square mesh of the steel mesh into a diamond mesh before preparing the screen. At present, the steel mesh is generally stretched manually, which has low production efficiency and cannot accurately control the stretching angle, thus affecting the quality of the steel mesh. Summary of the invention

[0003] The object of the present invention is to provide a mesh oblique drawing process, comprising the following steps:

[0004] A pair of manipulators are used to respectively clamp a pair of opposite sides of a rectangular steel wire mesh cloth, wherein the mesh of the steel wire mesh cloth is a square;

[0005] Then the pair of manipulators are moved away from each other until the wire mesh is stretched and tightened;

[0006] Then, the pair of manipulators are rotated synchronously clockwise or counterclockwise to stretch the grid of the wire mesh cloth from a square to a rhombus, so that a pair of right-angled diagonals in the square grid are stretched into a pair of acute angles in the rhombus grid, and another pair of right-angled diagonals in the square grid are stretched into a pair of obtuse angles in the rhombus grid, and the angle of a pair of acute angles in the rhombus grid reaches a predetermined angle range.

[0007] Preferably, the predetermined angle ranges from 7 to 20 degrees.

[0008] Preferably, the pair of manipulators synchronously rotate clockwise or counterclockwise to keep the wire mesh cloth in a straight state.

[0009] Preferably, a detector is used to confirm whether the angle of a pair of acute angles in the diamond grid is within a predetermined angle range.

[0010] Preferably, the manipulator includes: a horizontal pull rod, a mesh pulling clamp arranged on the pull rod and used to clamp one edge line of the rectangular wire mesh cloth, a vertical rotating shaft whose bottom end is connected to the middle of the pull rod, a motor connected to the top of the rotating shaft and used to drive the rotating shaft to rotate around its own axis, and a mechanical arm that drives the motor to move.

[0011] The advantages and beneficial effects of the present invention are:

[0012] The invention provides a mesh oblique drawing process, which adopts a pair of manipulators to stretch the steel wire mesh, and can stretch the grid of the steel wire mesh from a square to a diamond.

[0013] The present invention adopts a robot to replace manpower, can produce more efficiently, and can stabilize the quality of the stretched mesh.

[0014] Compared with manual stretching, the present invention can adjust the required angle more accurately.

[0015] The present invention can more accurately control the stretching angle, reduce labor costs, and ensure that the quality of the mesh is above a certain level, so that the subsequent process can reduce the error value.

[0016] The present invention uses a manipulator to stretch the mesh cloth, which reduces human factors to a minimum, and can improve production capacity and production rate at the same time.

[0017] The invention spreads a layer of fixed adhesive film on the steel wire mesh cloth, and brushes it back and forth 3-4 times with an electrostatic brush to remove static electricity, so that the fixed adhesive film and the mesh cloth are closely attached without bubbles, and the fixed adhesive film and the mesh cloth are flat. DETAILED DESCRIPTION

[0018] The specific implementation of the present invention is further described below in conjunction with the examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention, and cannot be used to limit the protection scope of the present invention.

[0019] The present invention provides a mesh oblique drawing process, which uses a pair of manipulators to stretch the steel wire mesh;

[0020] The pair of manipulators comprises a left manipulator and a right manipulator arranged on the left and right; the left manipulator and the right manipulator respectively comprise: a horizontal pull rod, a net-pulling clamp arranged on the pull rod and used to clamp one edge line of the rectangular wire mesh cloth, a vertical rotating shaft connected to the middle of the pull rod at the bottom end, a motor connected to the top of the rotating shaft and used to drive the rotating shaft to rotate around its own axis, and a mechanical arm driving the motor to move;

[0021] The mesh oblique drawing process comprises the following steps:

[0022] 1) Cut the wire mesh into a rectangle. The mesh of the wire mesh is a square, that is, the latitude and warp in the wire mesh are perpendicular to each other;

[0023] 2) Control the robot arm movements of the left manipulator and the right manipulator so that the pull rod of the left manipulator and the pull rod of the right manipulator are in the same horizontal plane, and the rotation axis of the left manipulator and the rotation axis of the right manipulator are in the same vertical plane, which is perpendicular to the front-back direction; at this time, the rotation axis of the left manipulator is located on the left side of the rotation axis of the right manipulator, and the pull rod of the left manipulator is located on the left side of the pull rod of the right manipulator;

[0024] 3) Control the motors of the left manipulator and the right manipulator to work, the motor drives the corresponding shaft to rotate around its own axis, and the shaft drives the corresponding pull rod to rotate to adjust the direction of the pull rod and the net-pulling chuck on it, so that the pull rod of the left manipulator and the pull rod of the right manipulator are both set in the front-back direction, and the net-pulling chuck of the left manipulator and the net-pulling chuck of the right manipulator are set facing each other;

[0025] 4) Control the movements of the left and right manipulators so that the pull rod of the left manipulator and the pull rod of the right manipulator are moved closer to each other in the left-right direction until the distance between the pull rod of the left manipulator and the pull rod of the right manipulator is less than the length of the long side of the rectangular wire mesh;

[0026] 5) Arrange the wire mesh cut into a rectangle between the pull rod of the left manipulator and the pull rod of the right manipulator, and make a pair of short sides of the rectangular wire mesh be clamped and fixed by the net clamp of the left manipulator and the net clamp of the right manipulator respectively;

[0027] 6) Control the movements of the manipulators on the left and right sides of the manipulator, so that the pull rod of the left and right sides of the manipulator move away from each other in the left and right directions, until the mesh clamps of the left and right sides of the manipulator stretch and tighten the wire mesh; at this time, the weft of the wire mesh is arranged in the left and right directions, and the warp of the wire mesh is arranged in the front and back directions;

[0028] 7) Control the motors of the left manipulator and the right manipulator to work synchronously, and the motor drives the corresponding rotating shaft to rotate clockwise or counterclockwise around its own axis, and the rotating shaft drives the corresponding pull rod to rotate clockwise or counterclockwise, so that the pull rod of the left manipulator and the pull rod of the right manipulator rotate synchronously in the same direction clockwise or counterclockwise; and control the rotation speed of the pull rod of the left manipulator and the pull rod of the right manipulator to keep the wire mesh in a straight state until the angle between the weft of the wire mesh and the left and right directions reaches 7 to 20 degrees; at this time, the mesh of the wire mesh is a rhombus (that is, a pair of right-angled diagonals in the square grid is stretched into a pair of acute angles in the rhombus grid, and another pair of right-angled diagonals in the square grid is stretched into a pair of obtuse angles in the rhombus grid, and the angle of a pair of acute angles in the rhombus grid reaches 7 to 20 degrees);

[0029] 8) Release the mesh clamps of the left and right manipulators, and remove the diamond mesh wire cloth from the left and right manipulators.

[0030] Better:

[0031] After step 6) is completed, the stretched and taut steel mesh cloth is treated with chemicals to loosen the knots of the steel mesh cloth; the steel mesh cloth is then dehydrated and dried; and step 7) is then implemented.

[0032] After step 7) is completed, use a detector to confirm that the angles of a pair of acute angles in the diamond grid are within the predetermined angle range; then spread a layer of fixed adhesive film on the wire mesh, and brush it back and forth 3 to 4 times with an electrostatic brush to confirm the flatness of the wire mesh and the fixed adhesive film; then implement step 8).

[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. The mesh oblique pulling process is characterized by: A pair of manipulators is used to stretch the wire mesh; The pair of manipulators comprises a left manipulator and a right manipulator arranged on the left and right; the left manipulator and the right manipulator respectively comprise: a horizontal pull rod, a net-pulling clamp arranged on the pull rod and used to clamp one edge line of the rectangular wire mesh cloth, a vertical rotating shaft connected to the middle of the pull rod at the bottom end, a motor connected to the top of the rotating shaft and used to drive the rotating shaft to rotate around its own axis, and a mechanical arm driving the motor to move; The mesh oblique drawing process comprises the following steps: 1) Cut the wire mesh into a rectangle. The mesh of the wire mesh is a square, that is, the latitude and warp in the wire mesh are perpendicular to each other; 2) Control the robot arm movements of the left manipulator and the right manipulator so that the pull rod of the left manipulator and the pull rod of the right manipulator are in the same horizontal plane, and the rotation axis of the left manipulator and the rotation axis of the right manipulator are in the same vertical plane, which is perpendicular to the front-back direction; at this time, the rotation axis of the left manipulator is located on the left side of the rotation axis of the right manipulator, and the pull rod of the left manipulator is located on the left side of the pull rod of the right manipulator; 3) Control the motors of the left manipulator and the right manipulator to work, the motor drives the corresponding shaft to rotate around its own axis, and the shaft drives the corresponding pull rod to rotate to adjust the direction of the pull rod and the net-pulling chuck on it, so that the pull rod of the left manipulator and the pull rod of the right manipulator are both set in the front-back direction, and the net-pulling chuck of the left manipulator and the net-pulling chuck of the right manipulator are set facing each other; 4) Control the movements of the left and right manipulators so that the pull rod of the left manipulator and the pull rod of the right manipulator are moved closer to each other in the left-right direction until the distance between the pull rod of the left manipulator and the pull rod of the right manipulator is less than the length of the long side of the rectangular wire mesh; 5) Arrange the wire mesh cut into a rectangle between the pull rod of the left manipulator and the pull rod of the right manipulator, and make a pair of short sides of the rectangular wire mesh be clamped and fixed by the net clamp of the left manipulator and the net clamp of the right manipulator respectively; 6) Control the movements of the left manipulator and the right manipulator so that the pull rod of the left manipulator and the pull rod of the right manipulator move away from each other in the left-right direction until the mesh clamp of the left manipulator and the mesh clamp of the right manipulator stretch and tighten the wire mesh; at this time, the weft of the wire mesh is arranged in the left-right direction, and the warp of the wire mesh is arranged in the front-back direction; then use the liquid medicine to treat the stretched and tightened wire mesh to loosen the mesh knot of the wire mesh; then dehydrate and dry the wire mesh; 7) Control the motors of the left manipulator and the right manipulator to work synchronously. The motor drives the corresponding shaft to rotate clockwise or counterclockwise around its own axis, and the shaft drives the corresponding pull rod to rotate clockwise or counterclockwise, so that the pull rod of the left manipulator and the pull rod of the right manipulator rotate synchronously in the same direction clockwise or counterclockwise; and control the rotation speed of the pull rod of the left manipulator and the pull rod of the right manipulator to keep the wire mesh in a straight state until the angle between the weft of the wire mesh and the left and right directions reaches 7 to 20 degrees; at this time, the wire mesh is The mesh of the wire mesh is a diamond shape; a pair of right-angled diagonals in the square grid is stretched into a pair of acute angles in the diamond grid, and another pair of right-angled diagonals in the square grid is stretched into a pair of obtuse angles in the diamond grid, and the angle of the pair of acute angles in the diamond grid reaches 7 to 20 degrees; then a detector is used to confirm that the angle of the pair of acute angles in the diamond grid is within the predetermined angle range; then a layer of fixed adhesive film is laid on the wire mesh, and an electrostatic brush is used to brush back and forth 3 to 4 times to confirm the flatness of the wire mesh and the fixed adhesive film; 8) Release the mesh clamps of the left and right manipulators, and remove the diamond mesh wire cloth from the left and right manipulators.