A control method for an intelligent PVC product surface thermal printing device

Abstract

This invention relates to the field of PVC material processing equipment, specifically a control method for an intelligent PVC product surface hot stamping printing device. Through a reasonable and scientific programming and control method, this invention enables the intelligent PVC product surface hot stamping printing device to imprint various patterns onto almost any soft PVC fabric. This successfully allows the intelligent PVC product surface hot stamping printing device to be used for small-batch flexible customization of almost all graphics, solving the problem of previous processes that required the customization of a high-cost, long-cycle large roller, making it unsuitable for small-batch flexible customization.

Description

Technical Field

[0001] This invention relates to the field of PVC material processing equipment, specifically to a control method for an intelligent PVC product surface hot stamping printing device. Background Technology

[0002] Traditional methods for surface printing on PVC flexible fabrics involve engraving the design onto an embossing roller, which is then heated and transferred onto the product. However, this method often requires a dedicated embossing roller, which can cost tens of thousands of yuan, and each roller is designed for a specific purpose, with fixed content, position, and spacing that cannot be altered. For large production runs, numerous embossing rollers are needed, resulting in high costs and space constraints. Therefore, we propose an intelligent thermal printing device for the surface of PVC flexible materials that can freely print various graphics to meet the needs of flexible manufacturing. To better meet the usage requirements of this device, this invention proposes a control method for the intelligent thermal printing device on the surface of PVC products. Summary of the Invention

[0003] To better control an intelligent PVC product surface hot stamping printing device, enabling it to conveniently and easily stamp various patterns for small-batch production, this invention proposes a control method primarily applicable to an intelligent PVC product surface hot stamping printing device that is computer-controlled, allows free control of the PVC roll position, and allows the hot stamping head to move freely in the Y-axis and Z-axis directions while rotating around the Z-axis. The method mainly includes:

[0004] Step 1: Based on the characteristics of the hot stamping mold, input the shape type, size data, and contour point data of the hot stamping mold into the hot stamping mold database;

[0005] Step 2: Set the width and length of the PVC roll in the program, and generate a simulated graphic of the PVC roll based on this data;

[0006] Step 3: Open the graphic file to be imprinted, use the embedded graphic recognition program to identify the graphic as point data, and generate line graphics to be displayed in the program.

[0007] Step 4: Place the line drawing generated from the point data onto the simulated graphic of the PVC roll. After placement, the system locks it and generates the point data of the graphic outline on the PVC roll.

[0008] Step 5: Select a suitable hot-melt mold from the hot-melt mold database and place the hot-melt mold into the mold library model set in the program, while recording the position of the hot-melt mold in the mold library model; then, based on the outer contour point data of the hot-melt mold and the point data of the graphic contour generated in the previous step on the PVC roll, place the suitable hot-melt molds one by one in the graphic to determine the position and angle of the hot-melt mold;

[0009] Step 6: The system generates CNC code based on the coordinates and angle data of the center point of the placed hot-melt mold, using the CNC program of Fanuc.

[0010] Step 7: According to the position and angle of the hot stamping mold described in the CNC code, place the actual hot stamping mold in the actual mold library of the equipment, and place the PVC roll on the PVC roll rack of the equipment;

[0011] Step 8: Start the equipment. The equipment will automatically and continuously adjust the position of the PVC roll, the position and angle of the hot stamping head according to the code, and stamp the pattern on the PVC roll. Finally, the stamping work of the whole PVC is completed through multiple stampings.

[0012] Furthermore, the control method for an intelligent PVC product surface hot stamping printing device further includes: when the hot stamping mold is input into the database, it typically consists of three sets of data. The first set of data is the shape data code of the hot stamping mold, the second set of data is the size data of the hot stamping mold, and the third set of data is the contour point data of the hot stamping mold, that is, with the center point of the hot stamping mold as the origin of the coordinate system, the coordinates of the line contour of the hot stamping mold in the coordinate system, and the spacing between contour points sampled each time is less than 0.1mm.

[0013] Furthermore, the control method for an intelligent PVC product surface hot stamping printing device further includes: the fifth step of setting a suitable hot stamping mold in the graphic, which can be automatically laid out by the system by matching the point data of the hot stamping mold and the point data of the graphic, or it can be manually arranged one by one by the operator. When arranging, the rotation angle value of the hot stamping mold in the Z-axis direction can be set.

[0014] This invention discloses a control method for an intelligent PVC product surface thermal printing device. This method controls a servo motor-controlled, rotating intelligent PVC product surface thermal printing device capable of movement in the PVC roll displacement direction (X-direction), perpendicular to the roll displacement direction (Y-direction), and perpendicular to the Z-axis, enabling real-time and convenient printing. This allows for low-cost and efficient printing of various patterns and graphics onto soft PVC fabrics, significantly reducing manufacturing costs and development time, and improving production efficiency. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0016] Figure 1 This is a schematic diagram of the hot-melt mold.

[0017] Figure 2 A schematic diagram of the hot stamping mold and locating pins;

[0018] Figure 3 A schematic diagram of a rectangular hot stamping die and its center point;

[0019] Figure 4 A schematic diagram of a triangular hot stamping mold and its center point;

[0020] Figure 5 This is a schematic diagram of the embossed pattern;

[0021] Figure 6 A schematic diagram showing the embossed graphic placed on a PVC roll;

[0022] Figure 7 This is a schematic diagram of the structure after the mold is placed on the graphic. Detailed Implementation

[0023] In this invention, the direction of movement of the PVC roll is the X-axis direction, the direction perpendicular to the direction of movement of the PVC roll is the Y-axis direction, and the direction perpendicular to the plane formed by the X-axis and Y-axis is the Z-axis direction.

[0024] To make the intelligent PVC product surface hot stamping printing device more flexible and convenient to use, this invention proposes a control method for the device. This intelligent PVC product surface hot stamping printing device comprises a PVC roll holder controlled by a servo motor, allowing free control of the PVC roll position; a gantry frame allowing the hot stamping head to move freely in the Y-axis direction; a hot stamping component that can rotate at any angle in the Z-axis direction and move up and down; and a control computer. The head of the hot stamping component has a freely replaceable hot stamping mold (e.g., Figure 1 As shown), the mold is guided by internal locating pins (such as...). Figure 2 (As shown) is fixed in position to the hot soldering component. Specific control methods mainly include:

[0025] Step 1: Import the hot stamping mold data one by one into the mold database. The database sets 3 sets of identification data for each hot stamping mold. The first set is the shape data of the hot stamping mold, such as triangle, circle, ring, rectangle, rectangular ring, square, arc, or irregular shape. For each major category of mold, a code such as ABCD is set as the first set of identification data.

[0026] The second set of data is the dimensional data of the hot stamping mold, which is typically shown below. Figure 1 The circular cylindrical object shown typically has the same external dimensions for the hot-melt molds used in the same apparatus. This set of data will be set differently depending on the shape data in the first set. For example, for rectangular molds, we will record the length and width values ​​(e.g., ...). Figure 5 (As shown); for circular molds, we will set the diameter of the mold; for triangular molds, we will set the width and height of the base of the graphic (as shown). Figure 4 (As shown); for arcs, we will record the inner diameter, outer diameter, and sector data; for ring molds, we will record the inner and outer diameters of the hot-melt mold; for rectangular ring hot-melt molds, we will record the inner and outer length and width data of the mold. For irregularly shaped hot-melt molds, we will record the maximum outer edge dimension of the mold with the mold center as the center.

[0027] The third set of data is the contour point data of the hot-melt mold, that is, the point data of the mold within this coordinate system with the center point of the hot-melt mold as the origin. It is recommended that the sampling interval accuracy be higher than 0.1mm.

[0028] Step 2: Set the width and length of the PVC roll in the program, and generate a simulation graphic of the PVC roll based on this data.

[0029] Step 3: Open the graphic file to be printed, use the built-in graphic recognition program to identify the graphic as point data, and generate line graphics to be displayed in the program.

[0030] Step 4: The operator places the line drawing generated from the point data onto the simulated graphic of the PVC roll in the program, and at the same time the system locks it and generates the point data of the graphic outline.

[0031] Step 5: The operator selects a suitable hot-melt mold from the mold database and installs it in the mold library set in the program, assigning a number to the mold's location in the library. The system then displays the mold's outline on a PVC roll simulation graphic based on the operator's selected point data. The operator sets the appropriate hot-melt mold based on the degree of overlap between the two sets of data displayed on the graphic. When setting the mold, if the system detects that the point data of the mold outline and the graphic are approximately similar, it can automatically align the two outlines to assist the operator in setting the mold more effectively. For hot-melt molds that require rotation to fit, the operator can manually input the angle value, and the system will automatically rotate the generated mold graphic. Alternatively, the operator can manually set an approximate angle first, and then the system will automatically assist in calibrating it to the final position.

[0032] Step 6: After the operator sets the positions of all the hot stamping dies, the system generates CNC code based on the coordinates and angle data of the center point of the die and the CNC program of Fanuc. The code contains the position coordinates, die number and die angle of each stamping.

[0033] Step 7: The operator places the mold in the mold library according to the set mold position and angle, and places the PVC roll on the PVC roll rack of the equipment.

[0034] Step 8: Start the equipment. The equipment will automatically and continuously adjust the position of the PVC roll, the position and angle of the hot stamping head according to the code, and stamp the corresponding pattern on the PVC roll. Finally, the stamping work of the entire PVC roll is completed through multiple stampings.

[0035] The following examples further illustrate the control method for an intelligent PVC product surface hot stamping printing device according to the present invention.

[0036] In this embodiment, we will process the PVC soft fabric as follows: Figure 5 The aforementioned graphic.

[0037] Step 1: Import the data for the rectangular and triangular molds into the mold database one by one. Set the code for the rectangular mold to A and the code for the triangular mold to B.

[0038] Input the length and width data of the rectangular mold into the second set of data. The mold used in this case is 30mm long and 5mm wide. The base width of the triangular mold is 10mm and the height is 8mm. Input these data into the database as well.

[0039] Input the graphic data of the two molds into the system and generate their contour point data. Figure 3 and Figure 4 The intersection of the midpoint lines is the center point of the mold, i.e., the origin of the coordinate system. The point data of the mold contour within this coordinate system are collected, and the sampling interval accuracy is 0.1mm.

[0040] Step 2: Set the width of the PVC roll to 500mm and the length to 30 meters, and generate a simulation graphic of the PVC roll in the program.

[0041] Step 3: Figure 5 The graphic shown is opened, and the embedded graphic recognition program identifies the graphic as point data and generates line graphics that are displayed in the program.

[0042] Step 4: Place the line drawing generated from the point data onto the simulated graphic of the PVC roll (e.g., ...). Figure 6 As shown in the figure, the system simultaneously locks onto the point data of the graphic outline and generates the point data.

[0043] Step 5: The operator selects a rectangular mold from the mold database and places the rectangular mold at station 1 of the mold library, and the triangular mold at station 2.

[0044] The rectangular mold is then placed on the PVC roll simulation graphic, and multiple molds are placed in succession to eventually imprint a complete line.

[0045] The operator then selects a triangular mold and, based on the shape shown in the graphic, first positions the three triangles on the left, then sets the angle to 90 degrees and places the three triangles on the right. The finished appearance is as follows. Figure 7 As shown, where Figure 7 The inner part is the mold outline, and the outer part is the graphic outline. In the actual program, the two outlines overlap after being set.

[0046] Step 6: After the operator sets up all the molds, the system records the coordinates of the center points of all the molds (e.g., ...). Figure 7 The small dots shown are generated by the CNC program based on Fanuc. The code contains the position coordinates, mold number, and mold angle for each imprint.

[0047] Step 7: The operator places the rectangular and triangular molds into stations 1 and 2, respectively, with both molds at a 0-degree angle in their respective stations. Then, the PVC roll is placed on the PVC roll rack of the equipment.

[0048] Step 8: Start the equipment. The equipment will automatically and continuously adjust the position of the PVC roll, the position and angle of the hot stamping head according to the code, and stamp the corresponding pattern on the PVC roll. Finally, the stamping work of the entire PVC roll is completed through multiple stampings.

[0049] Traditional PVC hot stamping processes often use a large roller as a mold, resulting in only fixed patterns. However, the control method for an intelligent PVC product surface hot stamping printing device proposed in this invention allows this servo motor-controlled device to move and rotate in the PVC roll displacement direction (X-axis), the Y-axis perpendicular to the roll displacement direction, and the Z-axis perpendicularly, enabling real-time and convenient printing. This allows for low-cost and efficient imprinting of various patterns and graphics onto soft PVC fabrics, significantly reducing manufacturing costs and R&D time, and improving production efficiency.

[0050] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A control method for an intelligent PVC product surface hot stamping printing device, wherein the position of the PVC roll is freely controlled, the hot stamping head moves freely in the Y-axis and Z-axis directions, and rotates around the Z-axis, the intelligent PVC product surface hot stamping printing device having a PVC roll holder controlled by a servo motor and whose position of the PVC roll is freely controlled; The device comprises a gantry frame that allows the hot soldering head to move freely in the Y-axis direction; a hot soldering assembly that can rotate at any angle in the Z-axis direction while moving up and down; and a control computer. Its characteristic is that it includes: Step 1: Based on the characteristics of the hot stamping mold, input the shape type, size data, and contour point data of the hot stamping mold into the hot stamping mold database; Step 2: Set the width and length of the PVC roll in the program, and generate a simulated graphic of the PVC roll based on this data; Step 3: Open the graphic file to be imprinted, use the embedded graphic recognition program to identify the graphic as point data, and generate line graphics to be displayed in the program. Step 4: Place the line drawing generated from the point data onto the simulated graphic of the PVC roll. After placement, the system locks it and generates the point data of the graphic outline on the PVC roll. Step 5: Select a suitable hot-melt mold from the hot-melt mold database and place the hot-melt mold into the mold library model set in the program, while recording the position of the hot-melt mold in the mold library model; then, based on the outer contour point data of the hot-melt mold and the point data of the graphic contour generated in the previous step on the PVC roll, place the suitable hot-melt molds one by one in the graphic to determine the position and angle of the hot-melt mold; Step 6: The system generates CNC code based on the coordinates and angle data of the center point of the placed hot-melt mold, using the CNC program of Fanuc. Step 7: According to the position and angle of the hot stamping mold described in the CNC code, place the actual hot stamping mold in the actual mold library of the equipment, and place the PVC roll on the PVC roll rack of the equipment; Step 8: Start the equipment. The equipment will automatically and continuously adjust the position of the PVC roll, the position and angle of the hot stamping head according to the code, and stamp the pattern on the PVC roll. Finally, the stamping work of the whole PVC is completed through multiple stampings. When the hot stamping mold is input into the database, it consists of three sets of data. The first set of data is the shape data code of the hot stamping mold, the second set of data is the size data of the hot stamping mold, and the third set of data is the contour point data of the hot stamping mold. That is, with the center point of the hot stamping mold as the origin of the coordinate system, the coordinates of the line contour of the hot stamping mold in the coordinate system, and the spacing between contour points for each sampling is less than 0.1mm.

2. The control method for an intelligent PVC product surface hot stamping printing device according to claim 1, characterized in that: The fifth step involves setting a suitable hot stamping mold in the graphic. The system automatically lays out the mold by matching the point data of the hot stamping mold with the point data of the graphic. The operator then manually arranges the molds one by one, setting the rotation angle of the hot stamping mold in the Z-axis direction during the arrangement.

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