An automatic feeding device for screen printing of surface patterns on a webbing

Abstract

This invention discloses an automatic feeding device for screen printing patterns on the surface of webbing, belonging to the field of webbing printing feeding technology. It includes a mounting frame with multiple drive rollers rotatably mounted in the center. A drive motor is fixedly mounted on the outer wall of the mounting frame at a position corresponding to the drive rollers. A bracket is fixedly mounted on the upper end of the mounting frame, and two notches are opened at the lower end of the bracket. A correction component is installed inside the notches, including a drive motor and a friction wheel. Two first sliding grooves are symmetrically arranged on the upper side of the bracket, with a blocking rod installed inside each groove. A limiting groove is opened on the outer wall of the blocking rod on the side away from the first sliding groove, and a pressure sensor is installed inside the limiting groove. This invention, by setting a pressure sensor inside the limiting groove, can monitor the movement state of the webbing in real time. When the webbing deviates to the left or right, the friction force between the friction wheel and the webbing surface can push the deviated webbing back to its initial movement track.

Description

Technical Field

[0001] This invention relates to the field of webbing printing feeding technology, and more specifically, to an automatic feeding device for screen printing patterns on the surface of webbing. Background Technology

[0002] Screen printing is one of the core processes for processing patterns on the surface of webbing. With its advantages of strong adaptability, uniform pattern color development, and low cost of mass production, it is widely used in the pattern processing and production of various webbing products such as clothing accessories, bag webbing, and decorative webbing. In the production of screen printing on webbing, the feeding device needs to have strong stability and precision, which directly determines the clarity, regularity, and finished product qualification rate of the printed pattern.

[0003] Currently, in actual use, traditional feeding devices are prone to problems such as lateral deviation and misalignment of webbing, which is a flexible strip material with a soft texture and strong toughness. When pulled and moved, it is affected by various factors such as mechanical vibration of the equipment, uneven force on the driving roller, tension fluctuation of the webbing itself, and material placement deviation. It is impossible to detect and correct the material position in time when the webbing deviates. After the webbing deviates, it will directly lead to quality problems such as misalignment, color deviation, and incomplete pattern in subsequent screen printing, which will significantly reduce the quality of finished webbing and increase product scrap rate and production loss. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide an automatic feeding device for screen printing patterns on the surface of ribbons.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] An automatic feeding device for screen printing patterns on the surface of webbing includes a mounting frame. Multiple drive rollers are rotatably mounted in the center of the mounting frame. A drive motor is fixedly mounted on the outer wall of the mounting frame at a position corresponding to the drive rollers. The drive motor drives the drive rollers to rotate. A bracket is fixedly mounted on the upper end of the mounting frame. Two notches are formed at the lower end of the bracket. A correction component is installed inside the notches to correct the position of the webbing. A guide groove is formed on one side of each notch. The correction component includes a drive motor installed inside the guide groove and a friction wheel installed inside the notch. The drive motor drives the friction wheel to rotate, and the outer wall of the friction wheel makes frictional contact with the outer wall of the webbing. The bracket has two first sliding grooves with a symmetrical structure on its upper side. A blocking rod is installed inside the first sliding groove. A limiting groove is opened on the outer wall of the blocking rod away from the first sliding groove. A pressure sensor is installed inside the limiting groove. A control switch is also installed on the bracket. The pressure sensor is electrically connected to the control switch. The control switch is used to control the drive motor.

[0007] Furthermore, each of the first chute has a slidably mounted drive rod, and the two drive rods are arranged symmetrically at the center. A pressing frame is fixedly mounted on one side of the lower end of the drive rod. A connecting block is fixedly mounted on the end of the friction wheel near the drive motor. The output end of the drive motor is fixedly connected to the connecting block. The lower end of the pressing frame presses against the outer wall of the connecting block, and the lower side of the pressing frame near the connecting block has an inclined structure.

[0008] Furthermore, a movable groove is provided inside the guide groove near the end of the drive motor, and a movable block is slidably installed inside the movable groove, and the movable block is fixedly connected to the drive motor.

[0009] Furthermore, a movable groove is provided at the lower end of the notch, and a top block is slidably installed inside the movable groove. The upper end of the top block presses against the lower end of the connecting block, and a support spring is fixedly installed at the lower end of the top block. The end of the support spring away from the top block is fixedly connected to the inner wall of the movable groove.

[0010] Furthermore, the two blocking rods are respectively mounted on two different driving rods, and the extrusion frame and the blocking rods are respectively mounted on both sides of the driving rods.

[0011] Furthermore, a second groove is provided at one end of the driving rod near the blocking rod, and the end of the blocking rod near the second groove is slidably connected to the second groove. A threaded rod is installed through the outer wall of the blocking rod, and the threaded rod is threadedly connected to the blocking rod. A friction pad is fixedly installed at one end of the threaded rod inside the second groove, and the threaded rod is pressed into contact with the inner wall of the second groove through the friction pad.

[0012] Furthermore, a return spring is fixedly installed at one end of the driving rod, and the end of the return spring away from the driving rod is fixedly connected to the inner wall of the first slide groove. The return spring is used to drive the driving rod to return to its original position.

[0013] Furthermore, two limiting rollers are rotatably mounted on the ends of the two blocking rods that are close to each other, one of the limiting rollers being located on the upper side of the limiting groove and the other limiting roller being located on the lower side of the limiting groove.

[0014] Furthermore, a positioning rod is fixedly installed at the end of the limiting roller on one of the blocking rods, and a positioning groove is opened at the end of the limiting roller on the other blocking rod, wherein the positioning rod is slidably connected to the positioning groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) By setting a pressure sensor inside the limiting groove, the present invention can monitor the status of the webbing in real time. When the webbing shifts to the left or right, it will immediately squeeze the pressure sensor and trigger the transmission of electrical signals. The control switch will quickly start the motor and friction wheel to work. Relying on the friction force between the friction wheel and the surface of the webbing, the shifted webbing will be pushed back to the initial motion track. It can realize the full range correction of small and large shifts. The correction response speed is fast and the accuracy is high, achieving the effect of real-time correction and reducing the occurrence of misalignment of webbing printing and skewed patterns.

[0016] (2) The present invention, through the reset spring and support spring, can drive the friction wheel to rise and separate from the webbing when the webbing returns to its initial motion track, thereby eliminating additional friction and ensuring that the webbing is transported smoothly and at a constant speed under normal conditions.

[0017] (3) The present invention supports and limits the webbing by setting the upper and lower limiting rollers to prevent the webbing from being squeezed and arched or bent by the blocking rod, so as to keep it flat and further improve the printing effect.

[0018] (4) The present invention can adjust the spacing of the blocking rods by setting the threaded rod and friction pad, and can flexibly adjust the limiting position according to the width of the webbing to meet the feeding needs of various specifications of webbing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the support frame of the present invention; Figure 3 This is a schematic diagram of the internal structure of the notch in this invention; Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point A in the middle; Figure 5 This is a schematic diagram of the moving block and moving groove of the present invention; Figure 6 This is a schematic diagram of the pressure sensor and the limiting groove of the present invention; Figure 7 This is a schematic diagram of the positioning rod and positioning groove of the present invention; Figure 8 This is a schematic diagram of the threaded rod and friction pad of the present invention.

[0020] Explanation of the labels in the diagram: 1. Mounting frame; 101. Drive roller; 102. Drive motor; 2. Bracket; 201. Notch; 202. Guide groove; 203. First slide groove; 204. Control switch; 205. Drive rod; 206. Extrusion frame; 207. Moving groove; 208. Moving block; 209. Movable groove; 210. Top block; 211. Support spring; 212. Second slide groove; 213. Return spring; 3. Correction assembly; 301. Drive motor; 302. Friction wheel; 303. Connecting block; 4. Blocking rod; 401. Restricting groove; 402. Pressure sensor; 403. Threaded rod; 404. Friction pad; 405. Restricting roller; 406. Positioning rod; 407. Positioning groove. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1 to 8 An automatic feeding device for screen printing patterns on the surface of webbing includes a mounting frame 1. Multiple drive rollers 101 are rotatably mounted in the middle of the mounting frame 1. A drive motor 102 is fixedly mounted on the outer wall of the mounting frame 1 at a position corresponding to the drive rollers 101. The drive motor 102 can drive the drive rollers 101 to rotate, and drive the webbing through friction. The drive motor 102 is used to drive the drive rollers 101 to rotate. A bracket 2 is fixedly mounted on the upper end of the mounting frame 1. Two notches 201 are opened at the lower end of the bracket 2. A correction component 3 is installed inside the notch 201. The correction component 3 is used to correct the position of the webbing. A guide groove 202 is opened on one side of the notch 201. The correction component 3 includes a drive motor 301 installed inside the guide groove 202. The correction component 3 also includes a friction wheel 302 installed inside the notch 201. The drive motor 301 is used to drive the friction wheel 302 to rotate. The outer wall of the friction wheel 302 is in frictional contact with the outer wall of the webbing. The friction wheel 302 is installed on the upper side of the drive rollers 101, and the two friction wheels 302 are centrally symmetrically arranged. The upper side of the bracket 2 has two first sliding grooves 203 with a symmetrical structure. A blocking rod 4 is installed inside the first sliding groove 203. A limiting groove 401 is opened on the outer wall of the blocking rod 4 away from the first sliding groove 203. A pressure sensor 402 is installed inside the limiting groove 401. A control switch 204 is also installed on the bracket 2. The pressure sensor 402 is electrically connected to the control switch 204. The control switch 204 is used to control the drive motor 301. The control switch 204 is electrically connected to the drive motor 301. The electrical connection can be made by means of a wire.

[0023] By adopting the above technical solution, before use, the webbing to be printed is passed between the friction wheel 302 and the drive roller 101. Then, the webbing is passed through the two limiting grooves 401. When the webbing deviates during the conveying process, it can squeeze the inner wall of the limiting groove 401 and squeeze the pressure sensor 402. At this time, the pressure sensor 402 can send an electrical signal to the control switch 204. Then, the control switch 204 can control the drive motor 301 to work. After the drive motor 301 works, it can drive the friction wheel 302 to rotate. After the friction wheel 302 rotates, it can rub against the surface of the webbing, thereby pushing the webbing with friction force and moving the webbing back to the initial position. This allows it to return to the initial motion track and correct the position deviation of the webbing in time.

[0024] Inside the first chute 203, drive rods 205 are slidably installed. The two drive rods 205 are arranged symmetrically at the center. A pressing frame 206 is fixedly installed on one side of the lower end of the drive rod 205. A connecting block 303 is fixedly installed on the end of the friction wheel 302 near the drive motor 301. The output end of the drive motor 301 is fixedly connected to the connecting block 303. The lower end of the pressing frame 206 presses the outer wall of the connecting block 303. The lower side of the end of the pressing frame 206 near the connecting block 303 has an inclined structure. A movable groove 207 is provided inside the guide groove 202 near the drive motor 301. A movable block 208 is slidably installed inside the movable groove 207 and is fixedly connected to the drive motor 301.

[0025] By adopting the above technical solution, after the inner wall of the limiting groove 401 is squeezed by the offset webbing, the blocking rod 4 can move. After the blocking rod 4 moves, it can drive the driving rod 205 to move. When the driving rod 205 moves, it can drive the pressing frame 206 at its lower end to move. When the pressing frame 206 moves, it can squeeze the outer wall of the connecting block 303. At this time, when the inclined part of the pressing frame 206 is squeezed, the connecting block 303 can be lowered under the action of the decomposed force of the pressing force. When the connecting block 303 falls, it can drive the driving motor 301 and the friction wheel 302 to fall. When the friction wheel 302 falls, it can rub against the outer wall of the webbing, thereby causing the webbing to move towards the initial motion track through friction. When the friction wheel 302 falls, the driving motor 301 also falls, and it will drive the moving block 208 to fall. When the moving block 208 falls, it can drive the driving motor 301 to fall along the direction of the moving groove 207.

[0026] The lower end of the notch 201 is provided with a movable groove 209. A top block 210 is slidably installed inside the movable groove 209. The upper end of the top block 210 presses the lower end of the connecting block 303. A support spring 211 is fixedly installed at the lower end of the top block 210. The end of the support spring 211 away from the top block 210 is fixedly connected to the inner wall of the movable groove 209. Two blocking rods 4 are respectively installed on two different driving rods 205. The pressing frame 206 and the blocking rods 4 are respectively installed on both sides of the driving rods 205. When the blocking rod 4 on one side drives the driving rod 205 to move, it can cause the friction wheel 302 on the other side to descend. A return spring 213 is fixedly installed at one end of the drive rod 205. The end of the return spring 213 away from the drive rod 205 is fixedly connected to the inner wall of the first slide groove 203. The return spring 213 is used to drive the drive rod 205 to reset.

[0027] By adopting the above technical solution, after the webbing gradually resets, the squeezing pressure of the webbing on the inner wall of the limiting groove 401 gradually decreases. At this time, the reset spring 213 can squeeze the driving rod 205, causing the driving rod 205 to move to the initial position. After the driving rod 205 moves to the initial position, it can drive the squeezing frame 206 to gradually move to the initial position. When the squeezing frame 206 no longer squeezes the connecting block 303, the support spring 211 can cause the top block 210 to move upward inside the movable groove 209 under its own toughness. Thus, the top block 210 squeezes the connecting block 303, causing the connecting block 303, friction wheel 302, and driving motor 301 to rise to the initial position. This allows the friction wheel 302 to disengage from the webbing, preventing the friction of the friction wheel 302 from affecting the normal movement of the webbing.

[0028] A second groove 212 is provided at one end of the driving rod 205 near the blocking rod 4. The end of the blocking rod 4 near the second groove 212 is slidably connected to the second groove 212. One end of the blocking rod 4 passes through the driving rod 205 near its side and is connected to the other driving rod 205. A threaded rod 403 is installed through the outer wall of the blocking rod 4. The threaded rod 403 is threadedly connected to the blocking rod 4. A friction pad 404 is fixedly installed at one end of the threaded rod 403 inside the second groove 212. The threaded rod 403 is pressed against the inner wall of the second groove 212 through the friction pad 404. The two blocking rods 4 are arranged in an axisymmetric structure.

[0029] By adopting the above technical solution, rotating the threaded rod 403 can reduce or increase the friction between the friction pad 404 and the second slide groove 212. After the friction is reduced, pushing the blocking rod 4 can move the blocking rod 4 along the direction of the second slide groove 212, thereby adjusting the position of the blocking rod 4. In this way, the device can be adapted to webbing of different widths. After the adjustment is completed, rotating the threaded rod 403 again makes the friction pad 404 on the threaded rod 403 fit tightly against the inner wall of the second slide groove 212, increasing the friction between the threaded rod 403 and the second slide groove 212, thereby fixing the blocking rod 4 relative to the driving rod 205. When the limiting groove 401 is squeezed by the webbing, it can drive the blocking rod 4 to move.

[0030] Two limiting rollers 405 are rotatably mounted on the ends of the two blocking rods 4 that are close to each other. One limiting roller 405 is located on the upper side of the limiting groove 401, and the other limiting roller 405 is located on the lower side of the limiting groove 401. A positioning rod 406 is fixedly installed at the end of the limiting roller 405 on one of the blocking rods 4, and a positioning groove 407 is opened at the end of the limiting roller 405 on the other blocking rod 4. The positioning rod 406 is slidably connected to the positioning groove 407.

[0031] By adopting the above technical solution, the two limiting rollers 405 can restrict the webbing, prevent the webbing from arching or deforming due to the obstruction of the blocking rod 4, and keep the webbing in a flat state. The positioning rod 406 and the positioning groove 407 enable the two opposing limiting rollers 405 to move relative to each other, thereby restricting the movement direction of the limiting rollers 405.

[0032] Instructions for use: When using, pass the webbing to be printed through the space between the drive roller 101 and the friction wheel 302, and through the limiting grooves 401 of the two blocking rods 4. The drive motor 102 drives the drive roller 101 to rotate, relying on friction to transport the webbing. When the webbing shifts left or right, it will press against the inner wall of the limiting groove 401 of the blocking rod 4, triggering the pressure sensor 402 inside the groove to transmit an electrical signal to the control switch 204, activating the drive motor 301 on the corresponding side. Simultaneously, the shifting pressure will push the blocking rod 4 to move, causing the connected drive rod 205 to compress the return spring 213 and drive the extrusion frame 206 to shift. The inclined end of the extrusion frame 206 presses against the connecting block 303. Through the decomposition of force, the connecting block 303, the friction wheel 302, and the fixed drive motor 301 move down along the moving groove 207 with the moving block 208, causing the friction wheel 302 to tightly adhere to the surface of the shifted webbing. The friction then propels the webbing... The webbing returns to its initial motion track. After the webbing is reset, the squeezing force on the limiting groove 401 is reduced. The reset spring 213 pulls the drive rod 205 and the squeezing frame 206 to reset, releasing the squeezing of the connecting block 303. The support spring 211 in the movable groove 209 pushes the top block 210 upward, pushing the connecting block 303 and the friction wheel 302 back to their initial positions, so that the friction wheel 302 is separated from the webbing, avoiding interference with the normal movement of the webbing. In addition, the friction force between the friction pad 404 and the second sliding groove 212 can be adjusted by rotating the threaded rod 403, and the spacing of the sliding blocking rod 4 can be adjusted to adapt to webbing of different widths. The limiting rollers 405 set above and below the blocking rod 4 can fit against the upper and lower surfaces of the webbing. With the limiting cooperation of the positioning rod 406 and the positioning groove 407, the webbing is kept flat and the rollers move stably, effectively preventing the webbing from arching and deforming during conveying, and realizing precise and stable automated feeding and offset correction of the webbing.

[0033] The above are merely preferred embodiments of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. An automatic feeding device for screen printing patterns on the surface of ribbon, comprising a mounting frame (1), wherein a plurality of drive rollers (101) are rotatably mounted in the middle of the mounting frame (1), and a drive motor (102) is fixedly mounted on the outer wall of the mounting frame (1) at a position corresponding to the drive rollers (101), the drive motor (102) being used to drive the drive rollers (101) to rotate, characterized in that: The mounting bracket (1) is fixedly mounted with a bracket (2) at its upper end. The bracket (2) has two notches (201) at its lower end. A correction component (3) is installed inside the notch (201). The correction component (3) is used to correct the position of the webbing. A guide groove (202) is provided on one side of the notch (201). The correction component (3) includes a drive motor (301) installed inside the guide groove (202). The correction component (3) also includes a friction wheel (302) installed inside the notch (201). The drive motor (301) is used to drive the friction wheel (302) to rotate. The outer wall of the friction wheel (302) is in frictional contact with the outer wall of the webbing. The bracket (2) has two first sliding grooves (203) with a symmetrical structure on the upper side. A blocking rod (4) is installed inside the first sliding groove (203). A limiting groove (401) is opened on the outer wall of the blocking rod (4) away from the first sliding groove (203). A pressure sensor (402) is installed inside the limiting groove (401). A control switch (204) is also installed on the bracket (2). The pressure sensor (402) is electrically connected to the control switch (204). The control switch (204) is used to control the drive motor (301).

2. The automatic feeding device for screen printing patterns on the surface of webbing according to claim 1, characterized in that: The first chute (203) is slidably installed with a drive rod (205). The two drive rods (205) are arranged in a centrally symmetrical manner. A pressing frame (206) is fixedly installed on one side of the lower end of the drive rod (205). A connecting block (303) is fixedly installed on one end of the friction wheel (302) near the drive motor (301). The output end of the drive motor (301) is fixedly connected to the connecting block (303). The lower end of the pressing frame (206) presses the outer wall of the connecting block (303). The lower side of the pressing frame (206) near the connecting block (303) has an inclined structure.

3. The automatic feeding device for screen printing patterns on the surface of webbing according to claim 2, characterized in that: The guide groove (202) has a movable groove (207) at one end near the drive motor (301). A movable block (208) is slidably installed inside the movable groove (207), and the movable block (208) is fixedly connected to the drive motor (301).

4. An automatic feeding device for screen printing patterns on the surface of webbing according to claim 3, characterized in that: The lower end of the notch (201) is provided with a movable groove (209). A top block (210) is slidably installed inside the movable groove (209). The upper end of the top block (210) presses against the lower end of the connecting block (303). A support spring (211) is fixedly installed at the lower end of the top block (210). The end of the support spring (211) away from the top block (210) is fixedly connected to the inner wall of the movable groove (209).

5. An automatic feeding device for screen printing patterns on the surface of ribbons according to claim 4, characterized in that: The two blocking rods (4) are respectively installed on two different driving rods (205), and the extrusion frame (206) and the blocking rods (4) are respectively installed on both sides of the driving rods (205).

6. An automatic feeding device for screen printing patterns on the surface of webbing according to claim 5, characterized in that: The driving rod (205) has a second groove (212) at one end near the blocking rod (4). The blocking rod (4) is slidably connected to the second groove (212) at one end. A threaded rod (403) is installed through the outer wall of the blocking rod (4). The threaded rod (403) is threadedly connected to the blocking rod (4). A friction pad (404) is fixedly installed at one end of the threaded rod (403) inside the second groove (212). The threaded rod (403) is pressed against the inner wall of the second groove (212) through the friction pad (404).

7. An automatic feeding device for screen printing patterns on the surface of webbing according to claim 6, characterized in that: A reset spring (213) is fixedly installed at one end of the drive rod (205). The end of the reset spring (213) away from the drive rod (205) is fixedly connected to the inner wall of the first slide groove (203). The reset spring (213) is used to drive the drive rod (205) to reset.

8. An automatic feeding device for screen printing patterns on the surface of webbing according to claim 7, characterized in that: Two limiting rollers (405) are rotatably mounted on one end of each of the two blocking rods (4), one of the limiting rollers (405) being located on the upper side of the limiting groove (401) and the other limiting roller (405) being located on the lower side of the limiting groove (401).

9. An automatic feeding device for screen printing patterns on the surface of webbing according to claim 8, characterized in that: One of the blocking rods (4) has a positioning rod (406) fixedly installed at the end of the limiting roller (405), and the other blocking rod (4) has a positioning groove (407) at the end of the limiting roller (405). The positioning rod (406) and the positioning groove (407) are slidably connected.

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