Automatic knife jumping device of dry-method coating table
The automatic jump knife mechanism with edge detection and synchronized drive systems addresses manual inefficiencies, ensuring precise timing and reducing material waste in coating machines.
Patent Information
- Application Number
- CN202421535274.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-07-01
AI Technical Summary
The existing coating machines are not manually operated during the knife jump process, resulting in waste of paint and waste of leather.
The automatic tool jump device is adopted, including an infrared sensor detection connector, and the controller synchronously drives the comma scraper and the paint groove to rise, and the elastic sealing mechanism seals the paint groove discharge port to achieve accurate tool jump and paint storage.
Accurate control of the knife jump process is achieved, reducing waste leather generation and paint waste.
Smart Images
Figure CN223097222U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of synthetic leather processing, and particularly relates to an automatic knife-jumping device for a dry coating table. Background Art
[0002] A coating machine is mainly used for the surface coating process production of films, papers (such as release papers), etc. This machine coats a specific functional glue, coating, ink, etc. on a rolled base material, and then winds it up after drying.
[0003] After the base material is coated with the coating, it is also necessary to scrape the coating on it flat with a scraper so that the thickness of the coating on the base material meets the production requirements. In continuous production, due to the limited length of the rolled base material, there will inevitably be joints in the coated base material. Since the thickness of the joint part is larger than the gap between the edge of the coating knife and the roller shaft, when encountering the joint part, it is also necessary to manually control the coating knife to rise, which is also called "knife-jumping". The main purpose is to avoid the situation that the coating knife cuts off the base material joint. After the joint part passes, then manually control the coating knife to lower. Since the entire knife-jumping process is manual operation, it is very difficult to control the accurate time of the coating knife's takeoff and reset during knife-jumping, resulting in a certain amount of waste leather after knife-jumping. And since the coating will continue to ooze out of the coating tank during knife-jumping, there will also be waste of the coating during this process.
[0004] In view of this, the inventor of the present invention has conducted in-depth research on the above problems, and thus this case has been generated. Content of the Utility Model
[0005] The utility model provides an automatic knife-jumping device for a dry coating table, aiming to solve the problems of inaccurate manual operation and coating seepage waste during the knife-jumping process of the existing coating machine.
[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0007] An automatic tool jumping device for a dry coating table, comprising a frame. Taking the length direction of the above-mentioned frame as the left-right direction, a pressure roller is installed on the above-mentioned frame, and a comma knife is installed above the pressure roller. There is a gap for the release paper to pass between the outer surface of the above-mentioned comma knife and the outer surface of the above-mentioned pressure roller. And above the two ends of the above-mentioned comma knife, there are fixed first driving members for driving the comma knife to approach or move away from the above-mentioned pressure roller. On the right side of the above-mentioned comma knife, there is a paint tank for containing paint. Above the above-mentioned paint tank, there is a fixed second driving member for driving the paint tank to approach or move away from the release paper. A discharge port for the paint to flow out is opened at the bottom of the above-mentioned paint tank. An elastic sealing mechanism that extends out of the above-mentioned discharge port and can block or open the above-mentioned discharge port with an externally applied force is provided inside the above-mentioned paint tank. On the right side of the above-mentioned paint tank, there is a guide roller for guiding the release paper into the frame. An infrared sensor for detecting the joint of the release paper is provided between the above-mentioned guide roller and the above-mentioned paint tank. And a controller electrically connected to the above-mentioned first driving member, the above-mentioned second driving member and the above-mentioned infrared sensor is further provided on the outer side wall of the above-mentioned frame.
[0008] Further, the above-mentioned paint tank is trapezoidal in reverse, and the above-mentioned elastic sealing mechanism includes elastic components arranged on the front and rear side walls of the above-mentioned paint tank and a sealing member fixedly connected to the bottom of the elastic components.
[0009] Further, the above-mentioned elastic component includes a fixed block, and a receiving groove is concavely provided inward at the bottom of the fixed block, and a spring is provided in the receiving groove; the above-mentioned sealing member includes a hemispherical sealing plate and a connecting block, one end of the connecting block is fixedly connected to the top surface of the sealing plate, and the other end is fixedly connected to the above-mentioned spring.
[0010] Further, limiting grooves are concavely provided on the two inner side walls of the above-mentioned receiving groove, and limiting blocks for being clamped into the above-mentioned limiting grooves are convexly provided on the two outer side walls of the above-mentioned connecting block.
[0011] Further, the maximum diameter of the arc-shaped end of the above-mentioned sealing plate is greater than the maximum width of the above-mentioned discharge port.
[0012] Further, the above-mentioned sealing plate is made of rubber material.
[0013] Further, the above-mentioned first driving member includes two first cylinders, and the output shafts of the two above-mentioned first cylinders are respectively fixedly connected to the two ends of the above-mentioned comma knife.
[0014] Further, a connecting plate is provided above the above-mentioned paint tank, and the two ends of the connecting plate are fixedly connected to the frame. The above-mentioned second driving member is a second cylinder, the second cylinder is arranged on the top surface of the above-mentioned connecting plate, and the output shaft of the second cylinder passes through the connecting plate and is fixedly connected to the top surface of the above-mentioned paint tank.
[0015] Further, a cross plate is provided between the coating tank and the guiding roller. Both ends of the cross plate are fixedly connected to the frame, and the infrared sensor is fixedly connected to the bottom surface of the cross plate.
[0016] From the above description of the structure of the present invention, the present invention has the following advantages:
[0017] In the present invention, a first driving member and a second driving member for driving the comma knife and the coating tank to move up and down are provided on the frame, an infrared sensor for detecting the joint of the release paper and a controller electrically connected to the first driving member, the second driving member and the infrared sensor are provided, and an elastic sealing mechanism capable of blocking or opening the discharge port according to the externally applied force is further provided in the coating tank. In this way, when the infrared sensor detects the joint of the release paper, it sends a signal to the controller, and then the controller controls the first driving member and the second driving member to rise synchronously, so that the comma knife completes the skip knife. The whole skip knife process is more precisely controlled, reducing the generation of waste leather. And because the coating tank rises driven by the second driving member, the elastic sealing mechanism is separated from the release paper, so that the elastic sealing mechanism blocks the discharge port, avoiding waste of coating during the skip knife process. Description of the Drawings
[0018] Figure 1 It is a schematic structural diagram of the elastic sealing assembly of the present invention when it abuts against the release paper.
[0019] Figure 2 For the present invention Figure 1 An enlarged view of part A in
[0020] Figure 3 It is a schematic structural diagram of the elastic sealing assembly of the present invention after being separated from the release paper.
[0021] Figure 4 For the present invention Figure 3 An enlarged view of part B in
[0022] Figure 5 It is a schematic layout structural diagram of the present invention.
[0023] Reference numerals: 10-frame; 11-connecting plate; 12-cross plate; 20-pressure roller; 30-comma knife; 40-first driving member; 50-coating tank; 51-discharge port; 52-fixed block; 521-accommodating groove; 5211-limiting groove; 522-spring; 53-sealing plate; 54-connecting block; 541-limiting block; 60-second driving member; 70-guiding roller; 80-infrared sensor; 90-controller. Detailed Embodiments
[0024] The technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.
[0025] Referring to Figures 1 to 5 , an automatic knife-jumping device for a dry coating table, comprising a frame 10. Taking the length direction of the frame 10 as the left-right direction, a pressure roller 20 is installed on the left side of the frame 10, and a comma knife 30 is installed above the pressure roller 20. There is a gap for the release paper to pass between the outer surface of the comma knife 30 and the outer surface of the pressure roller 20. And above both ends of the comma knife 30, a first driving member 40 for driving the comma knife 30 to approach or move away from the pressure roller 20 is fixedly provided. A paint tank 50 for containing paint is provided on the right side of the comma knife 30. Above the paint tank 50, a second driving member 60 for driving the paint tank 50 to approach or move away from the release paper is fixedly provided. And a discharge port 51 for the paint to flow out is opened at the bottom of the paint tank 50. An elastic sealing mechanism that extends out of the discharge port 51 and can block or open the discharge port 51 with an externally applied force is provided inside the paint tank 50. And a guide roller 70 for guiding the release paper into the frame is provided on the right side of the paint tank 50. An infrared sensor 80 for detecting the joint of the release paper is further provided between the guide roller 70 and the paint tank 50. A controller 90 electrically connected to the first driving member 40, the second driving member 60, and the infrared sensor 80 is further provided on the outer side wall of the frame 10.
[0026] Referring to Figures 1 to 5 , the first driving member 40 includes two first air cylinders. Bearing seats (not shown in the figure) are provided at both ends of the comma knife 30. The output shafts of the two first air cylinders are respectively fixedly connected to the bearing seats at both ends of the comma knife 30. In this way, when the output shafts of the two first air cylinders extend or retract, the comma knife 30 moves up and down accordingly, so as to achieve the purpose of knife jumping and resetting.
[0027] Referring to Figures 1 to 5, in this embodiment, the paint tank 50 is trapezoidal in reverse, and the length of the discharge port 51 is greater than the width of the release paper. The elastic sealing mechanism includes elastic components arranged on the front and rear side walls of the above-mentioned paint tank 50 and a seal fixed to the bottom of the elastic components; in this embodiment, the elastic components include fixed blocks 52, and a receiving groove 521 is recessed inward at the bottom of the fixed block 52, and a spring 522 is arranged in the receiving groove 521; the seal includes a hemispherical sealing plate 53 and a connecting block 54. The sealing plate 53 is strip-shaped, and its material is preferably made of rubber material, and the maximum diameter of the arc end of the sealing plate 53 is greater than the maximum width of the above-mentioned discharge port 51. One end of the connecting block 54 is fixedly connected to the top surface of the sealing plate 53, and the other end is fixedly connected to the spring 522. Limiting grooves 5211 are recessed on the two inner side walls of the receiving groove 521, and limiting blocks 541 for being stuck into the limiting grooves 5211 are protruded on the two outer side walls of the connecting block 54. Through such a setting, when the second driving member 60 drives the paint tank 50 to move downward so that the sealing plate 53 abuts against the release paper, the sealing plate 53 will retract, and then the paint in the paint tank 50 flows out from the gap between the sealing plate 53 and the discharge port 51. When the second driving member 60 drives the paint tank 50 to move upward so that the sealing plate 53 is separated from the release paper, the sealing plate 53 blocks the discharge port 51 again under the action of the spring 522 rebounding, avoiding the waste of paint caused by the paint seeping out from the discharge port 51.
[0028] Refer to Figures 1 to 5 , a connecting plate 11 is arranged above the paint tank 50, and both ends of the connecting plate 11 are fixedly connected to the frame 10. In this embodiment, the second driving member 60 is a second air cylinder, which is arranged on the top surface of the connecting plate 11, and the output shaft of the second air cylinder passes through the connecting plate 11 and is fixedly connected to the top surface of the paint tank 50. A cross plate 12 is further arranged between the paint tank 50 and the guide roller 70. Both ends of the cross plate 12 are fixedly connected to the frame 10, and the infrared sensor 80 is fixedly connected to the bottom surface of the cross plate 10. Through such a setting, the infrared sensor 80 can sense the position of the release paper joint before the release paper passes through the comma blade 30, and then transmit a signal to the controller 90, and then the controller 90 controls the first driving member 40 and the second driving member 60 to drive the comma blade 30 and the paint tank 50 to rise synchronously.
[0029] The utility model drives the comma knife 30 and the coating tank 50 to move up and down by arranging a first driving member 40 and a second driving member 60 on the frame 10, and is provided with an infrared sensor 80 for detecting the joint of the release paper and a controller 90 electrically connected to the first driving member 40, the second driving member 60 and the infrared sensor 80. An elastic sealing mechanism capable of blocking or opening the discharge port 51 with the force applied externally is further arranged in the coating tank 50. In this way, when the infrared sensor 80 detects the joint of the release paper, it sends a signal to the controller 90, and then the controller 90 controls the first driving member 40 and the second driving member 60 to rise synchronously, so that the comma knife 30 completes the skip knife. The whole skip knife process is controlled more precisely, reducing the generation of waste leather. And because the coating tank 50 rises driven by the second driving member 60, the elastic sealing mechanism is separated from the release paper, and then the spring 522 resets and blocks the discharge port 51, avoiding the waste of the coating during the skip knife process.
[0030] The above is only the specific implementation manner of the utility model, but the design concept of the utility model is not limited thereto. Any non-substantive modification made to the utility model using this concept shall fall within the scope of infringement of the protection scope of the utility model.
Claims
1. An automatic knife-jumping device for a dry coating table, comprising a frame, characterized in that: Taking the length direction of the frame as the left - right direction, a pressure roller is installed on the frame, and a comma knife is installed above the pressure roller. There is a gap for the release paper to pass between the outer surface of the comma knife and the outer surface of the pressure roller. Above both ends of the comma knife, a first driving member is fixedly provided for driving the comma knife to approach or move away from the pressure roller. A paint tank for containing paint is provided on the right side of the comma knife. Above the paint tank, a second driving member is fixedly provided for driving the paint tank to approach or move away from the release paper. A discharge port for the paint to flow out is opened at the bottom of the paint tank. An elastic sealing mechanism that extends out of the discharge port and can block or open the discharge port with an externally applied force is provided inside the paint tank. A guide roller for guiding the release paper into the frame is provided on the right side of the paint tank. An infrared sensor for detecting the joint of the release paper is provided between the guide roller and the paint tank. And a controller electrically connected to the first driving member, the second driving member, and the infrared sensor is further provided on the outer side wall of the frame.
2. The automatic tool jumping device for the dry coating table according to claim 1, characterized in that: The paint tank is trapezoidal in reverse, and the elastic sealing mechanism includes elastic components provided on the front and rear side walls of the paint tank and a sealing member fixedly connected to the bottom of the elastic components.
3. The automatic tool jumping device for the dry coating table according to claim 2, wherein: The elastic component includes a fixed block. An accommodating groove is recessed inward at the bottom of the fixed block, and a spring is provided in the accommodating groove. The sealing member includes a hemispherical sealing plate and a connecting block. One end of the connecting block is fixedly connected to the top surface of the sealing plate, and the other end is fixedly connected to the spring.
4. The automatic tool jumping device for the dry coating table according to claim 3, wherein: Limiting grooves are recessed on both inner side walls of the accommodating groove, and limiting blocks for being clamped into the limiting grooves are protruded on both outer side walls of the connecting block.
5. The automatic tool jumping device for the dry coating table according to claim 3 or 4, characterized in that: The maximum diameter of the arc - shaped end of the sealing plate is larger than the maximum width of the discharge port.
6. The automatic tool jumping device for the dry coating table according to claim 3 or 4, characterized in that: The sealing plate is made of rubber material.
7. The automatic tool jumping device for the dry coating table according to claim 1, wherein: The first driving member includes two first cylinders, and the output shafts of the two first cylinders are respectively fixedly connected to both ends of the comma knife.
8. The automatic tool jumping device for the dry coating table according to claim 1, characterized in that: A connecting plate is provided above the paint tank, and both ends of the connecting plate are fixedly connected to the frame. The second driving member is a second cylinder, the second cylinder is arranged on the top surface of the connecting plate, and the output shaft of the second cylinder passes through the connecting plate and is fixedly connected to the top surface of the paint tank.
9. The automatic tool jumping device for the dry coating table according to claim 1, characterized in that: A cross - plate is provided between the paint tank and the guide roller, and both ends of the cross - plate are fixedly connected to the frame, and the infrared sensor is fixedly connected to the bottom surface of the cross - plate.