Transmission extrusion type tubular thread marking machine based on pre-cooling technology
The transmission extrusion tubular filament printing machine, which utilizes pre-cooling technology, uses an electric push rod to drive the guide block and drive the transmission wheel 106 to achieve a pre-cooling mechanism 2. Combined with a thermoelectric cooler and guide cylinder design, it realizes high-precision printing of tubular filaments of various specifications with high efficiency.
Patent Information
- Application Number
- CN202522688529.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-18
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-18
AI Technical Summary
Traditional tubular filament printing equipment is prone to elastic deformation at room temperature, slippage and jamming due to insufficient or excessive transmission friction, and asynchronous transmission and printing speeds, resulting in low printing accuracy and printing defects.
The transmission extrusion tubular screen printing machine, which adopts pre-cooling technology, uses an electric push rod to drive the guide block and adjust the transmission wheel. Combined with the pre-cooling mechanism of thermoelectric cooler and guide cylinder, it achieves synchronous pre-cooling and shaping. The doctor blade assembly, which is linked with the linear module, ensures stable transmission and accurate printing.
It improves printing accuracy, reduces equipment changeover and debugging time, solves problems such as blurry prints and misalignment, and achieves efficient and high-precision printing of multi-specification tubular filaments.
Smart Images
Figure CN224928682U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of tubular filament printing equipment, specifically a transmission extrusion tubular filament printing machine based on pre-cooling technology. Background Technology
[0002] Tubular filaments are commonly used substrates in textiles, medical devices, and industrial fluid transport. The printing quality of their surface markings, patterns, and scales directly affects the functionality and aesthetics of the products. Currently, traditional tubular filament printing equipment mostly adopts a combination of open feeding and scraping screen printing, which presents the following core technical challenges in practical applications: 1. Elastic tubular filaments such as nylon and spandex are prone to relaxation and deformation at room temperature due to tension fluctuations and electrostatic adsorption. During the printing process, the radial runout error can reach ±0.3~0.5mm, and the axial misregistration rate exceeds 0.5%, resulting in misalignment of multi-color patterns and blurred printing edges. In particular, thin-walled filaments (wall thickness <0.5mm) are prone to collapse and wrinkles, which cannot meet the requirements of precision printing.
[0003] 2. Traditional equipment feeding mechanisms are mostly smooth rollers or clamping transmissions. For soft tubular filaments, insufficient transmission friction can easily lead to slippage and jamming, or excessive clamping force can cause damage to the tube wall. At the same time, it is difficult to accurately synchronize the transmission speed with the squeegee printing speed, resulting in uneven printing depth and ink breaks or ghosting at the circumferential joints. Therefore, a transmission extrusion type tubular filament printing machine based on pre-cooling technology is proposed. Utility Model Content
[0004] The purpose of this invention is to provide a transmission extrusion tubular filament printing machine based on pre-cooling technology, in order to solve the problems mentioned in the background art, such as the easy relaxation and deformation of elastic tubular filaments at room temperature leading to low printing accuracy, easy slippage or damage of soft filaments during transmission, and printing defects caused by asynchronous transmission and printing speeds.
[0005] To achieve the above objectives, this utility model provides the following technical solution: A transmission extrusion tubular screen printing machine based on pre-cooling technology includes: a mounting platform, an electric push rod fixedly mounted embedded at one end of the mounting platform, a guide rail block fixedly mounted at one end of the piston rod of the electric push rod and slidably mounted in a guide rail frame, the guide rail frame fixedly mounted at one end of the mounting platform, two sets of first transmission wheels rotatably mounted opposite each other at one end of the guide rail block, two sets of second transmission wheels rotatably mounted opposite each other at one end of the mounting platform and located outside the two sets of first transmission wheels, and two sets of pre-cooling mechanisms fixedly mounted embedded on the surface of the mounting platform and perpendicularly opposite to the lower ends of the outer surfaces of the two sets of second transmission wheels.
[0006] Preferably, two sets of motors are fixedly installed at the other end of the two sets of mounting platforms, and the output shafts of the two sets of motors rotate through the mounting platforms and are fixedly connected to the two sets of second transmission wheels.
[0007] Preferably, the conveying path of the tubular filament is to sequentially pass through the lower outer surface of the first group of second drive wheels, the upper outer surface of the two groups of first drive wheels, and the lower outer surface of the second group of second drive wheels, and complete the threading. The conveying section of the tubular filament at the lower outer surface of the second drive wheel is adapted to the pre-cooling end of the pre-cooling mechanism to achieve synchronous pre-cooling and shaping during the conveying process.
[0008] Preferably, a linear module is fixedly installed at one end of the mounting platform, and a doctor blade assembly is fixedly installed at one end of the moving block of the linear module. The lower surface of the doctor blade assembly scrapes against the screen plate inside the printing table. The printing table is fixedly installed at one end of the linear module and is perpendicular to the tubular filaments that are horizontally arranged on the upper surface of the two sets of first transmission wheels.
[0009] Preferably, the precooling mechanism includes a thermoelectric cooler, wherein fins are provided on both the cooling end and the heating end of the thermoelectric cooler, and the fan is installed on each of the fins.
[0010] Preferably, a guide cylinder is fixedly installed on the upper surface of the fan mounted on the cooling end of the thermoelectric cooler, and the other end of the guide cylinder is perpendicular to the lower surface of the second transmission wheel.
[0011] Compared with the prior art, the beneficial effects of this utility model are: The adjustment structure, which uses an electric push rod to drive the guide block and slide the first transmission wheel, can quickly adapt to tubular filaments of different diameters without disassembly. It can flexibly adjust the distance between the filament and the printing table, and form a stable clamping tension, significantly reducing the time cost of equipment changeover and debugging. At the same time, the pre-cooling mechanism, through the coordinated cooperation of the thermoelectric cooler and the guide cylinder, can complete synchronous pre-cooling and shaping during the filament transmission process, effectively eliminating static electricity and stabilizing the shape of the filament, avoiding the extra time consumption of the independent pre-cooling process. In addition, the doctor blade assembly driven by the linear module can be precisely linked with the speed of the transmission wheel group to form a stable dynamic printing line. This not only solves the problems of blurry printing and misalignment in traditional equipment, but also builds an integrated operation process of "pre-cooling and shaping - stable transmission - precise printing". While improving printing accuracy and the stability of finished product quality, it significantly improves overall work efficiency and adapts to the high-precision batch printing needs of multi-specification tubular filaments. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 A schematic diagram of the tubular filament threading path of this utility model; Figure 3 This is a schematic diagram of the precooling mechanism of this utility model.
[0013] In the diagram: 1. Mounting platform; 101. Guide rail frame; 102. Linear module; 103. Doctor blade assembly; 104. Printing table; 105. Second drive wheel; 106. First drive wheel; 107. Electric push rod; 108. Guide rail block; 2. Pre-cooling mechanism; 201. Thermoelectric cooler; 202. Fan; 203. Guide cylinder. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] Please see Figures 1-3 This embodiment provides the following technical solution: like Figures 1-2 As shown, a transmission extrusion tubular screen printing machine based on pre-cooling technology includes: a mounting platform 1, an electric push rod 107 is fixedly installed in an embedded manner at one end of the mounting platform 1, a guide rail block 108 is fixedly installed at one end of the piston rod of the electric push rod 107 and slidably installed in a guide rail frame 101, the guide rail frame 101 is fixedly installed at one end of the mounting platform 1, two sets of first transmission wheels 106 are rotatably installed at one end of the guide rail block 108 in a relative position, two sets of second transmission wheels 105 are rotatably installed at one end of the mounting platform 1 in a relative position and are located outside the two sets of first transmission wheels 106, and two sets of pre-cooling mechanisms 2 are fixedly installed in an embedded manner on the surface of the mounting platform 1 and are perpendicular to the lower end of the outer surface of the two sets of second transmission wheels 105.
[0016] Two sets of motors are fixedly installed at the other end of the two sets of mounting platforms 1. The output shafts of the two sets of motors rotate through the mounting platforms 1 and are fixedly connected to the two sets of second transmission wheels 105. The conveying path of the tubular filament is to pass through the lower end of the outer surface of the first set of second transmission wheels 105, the upper end of the outer surface of the two sets of first transmission wheels 106, and the lower end of the outer surface of the second set of second transmission wheels 105 in sequence, and complete the insertion. The conveying section of the tubular filament at the lower end of the outer surface of the second transmission wheel 105 is adapted to the pre-cooling end of the pre-cooling mechanism 2 to achieve synchronous pre-cooling and shaping during the conveying process.
[0017] One end of the mounting platform 1 is fixedly mounted with a linear module 102, and one end of the moving block of the linear module 102 is fixedly mounted with a doctor blade assembly 103. The lower surface of the doctor blade assembly 103 scrapes against the screen plate inside the printing table 104. The printing table 104 is fixedly mounted on one end of the linear module 102 and is perpendicular to the tubular filaments that are horizontally arranged on the upper surface of the two sets of first transmission wheels 106.
[0018] Through the design of the linear module 102, the doctor blade assembly 103, the printing table 104, the second drive wheel 105, the first drive wheel 106, the electric push rod 107, the guide block 108, and the pre-cooling mechanism 2, after the equipment is started, the tubular filament is first threaded through the lower outer surface of the first set of second drive wheels 105, the upper outer surface of the two sets of first drive wheels 106, and the lower outer surface of the second set of second drive wheels 105 in sequence according to the preset path. Then, the motor fixedly connected to the two sets of second drive wheels 105 is started, and the motor drives the second drive wheel 105 to rotate. At the same time, the electric push rod 107 pushes the guide block 108 on the guide. The slide within the rail frame 101 drives the two sets of first transmission wheels 106 to move, thus achieving the desired distance between the tubular filament and the printing table 104. This also accommodates tubular filaments of different diameters and maintains stable clamping tension, ensuring the filaments do not slip or suffer wall damage during transmission. As the tubular filament rotates with the second transmission wheel 105 and passes through the conveying section at the lower end of its outer surface, the two sets of pre-cooling mechanisms 2 on the surface of the mounting table 1 simultaneously pre-cool the filament, achieving synchronous pre-cooling and shaping during the conveying process. This effectively eliminates static electricity on the surface of the filament, stabilizes its tension, and suppresses elastic deformation. This design solves the problem of easy relaxation and deformation of elastic tubular filaments at room temperature in traditional equipment, controlling the shrinkage rate of the tubular filaments to a low range, thus laying the morphological foundation for subsequent high-precision printing. When the pre-cooled and shaped tubular filaments are driven to the upper part of the outer surface of the two sets of first transmission wheels 106 and are in a horizontal state, the linear module 102 starts and drives the doctor blade assembly 103 on its moving block to move. The lower surface of the doctor blade assembly 103 scrapes against the screen in the printing table 104. Through the squeezing action of the doctor blade assembly 103 on the screen, the ink on the screen is accurately printed onto the surface of the tubular filaments in a horizontal state below. In a stable transmission state, the moving speed of the doctor blade assembly 103 can be precisely matched with the transmission speed of the tubular filament, forming a stable dynamic imprint line. This ensures the uniformity of ink transfer and avoids ink smearing caused by contact between the non-image area screen and the tubular filament. Combined with the shaping effect of the pre-cooling mechanism 2, it effectively improves the registration accuracy of the tubular filament, reduces the probability of blurred print edges and misalignment of multi-color patterns, and reduces excessive ink penetration into the gaps between the tubular filament fibers. Ultimately, it achieves high-precision and high-quality printing of tubular filament, solving the technical pain points of insufficient coordination between transmission and printing and low versatility in traditional equipment.
[0019] like Figures 2-3 As shown, the precooling mechanism 2 includes a thermoelectric cooler 201. Fins are provided on both the cooling end and the heating end of the thermoelectric cooler 201, and a fan 202 is installed on each of the fins. A guide cylinder 203 is fixedly installed on the upper surface of the fan 202 installed on the cooling end of the thermoelectric cooler 201. The other end of the guide cylinder 203 is perpendicular to the lower surface of the second transmission wheel 105.
[0020] Through the design of the thermoelectric cooler 201, fan 202, and guide cylinder 203, when the equipment is started, the thermoelectric cooler 201 in the pre-cooling mechanism 2 starts working, its cooling end rapidly lowers the temperature, and the heating end generates heat simultaneously. At this time, the fans 202 on the cooling end and the heating end fins start simultaneously. The fan 202 on the cooling end blows the cold air at the cooling end fins toward the guide cylinder 203. The guide cylinder 203 plays a role in gathering and guiding the cold air, so that the cold air is accurately delivered to the lower surface of the second transmission wheel 105. When the tubular filament passes through the conveying section at the lower end of the outer surface of the second transmission wheel 105, the cold air led out by the guide cylinder 203 directly acts on... Simultaneous pre-cooling and shaping of the tubular filaments is achieved on the surface of the tubular filaments, while the fan 202 at the heating end promptly dissipates heat from the fins at the heating end, ensuring that the thermoelectric cooler 201 is always at a stable operating temperature and avoiding overheating that could affect the cooling effect. This pre-cooling method achieves precise temperature control through the thermoelectric cooler 201, and with the directional airflow from the guide cylinder 203, the temperature of the tubular filaments can be stabilized within a suitable shaping range. This effectively eliminates static electricity on the surface of the tubular filaments, stabilizes their tension, and suppresses elastic deformation, keeping the shrinkage rate within the range of ≤0.2%. This solves the problem of easy relaxation and deformation of elastic tubular filaments at room temperature in traditional equipment.
[0021] Among them, the thermoelectric cooler 201 can be model TEC1-12706: this model is a commonly used industrial-grade thermoelectric cooler with an operating voltage of 12V, a maximum cooling power of approximately 60W, and dimensions of 40×40mm, suitable for the embedded installation requirements of mounting platform 1 in the document. Its cooling end can quickly cool down to below room temperature, and together with the fins and fan 202, it can efficiently transfer cold energy. Through the guide cylinder 203, it acts directionally on the tubular filament at the second drive wheel 105, which can meet the pre-cooling and shaping requirements of the elastic tubular filament, and stably control the shrinkage rate to ≤0.2%. At the same time, the heat dissipation efficiency of the heating end is suitable for the continuous operation of the equipment.
[0022] Based on the above technical solution, the working steps of this solution are summarized as follows: In use, the tubular filament is first threaded along a preset path, passing sequentially through the lower outer surface of the first set of second transmission wheels 105, the upper outer surface of the two sets of first transmission wheels 106, and the lower outer surface of the second set of second transmission wheels 105. Then, the motor fixedly connected to the two sets of second transmission wheels 105 is started, driving the second transmission wheels 105 to rotate. Simultaneously, the electric push rod 107 pushes the guide block 108 to slide within the guide frame 101, thereby moving the two sets of first transmission wheels 106. The system achieves the desired distance between the tubular filaments between the first drive wheels 106 and the printing table 104, while also accommodating tubular filaments of different diameters and forming a stable clamping tension. As the tubular filaments rotate with the second drive wheel 105 and pass through the conveying section at the lower end of their outer surface, the thermoelectric coolers 201 in the two sets of pre-cooling mechanisms 2 on the mounting table 1 begin to operate. Their cooling ends rapidly lower the temperature, while the heating ends simultaneously generate heat. At this time, the fans 202 on the cooling and heating end fins start synchronously. The fan 202 on the cooling end blows the cold air from the cooling end fins towards the guide cylinder 2. 03. The guide cylinder 203 gathers and guides the cold air, ensuring its precise delivery to the lower surface of the second drive wheel 105. When the tubular filament passes through the conveying section at the lower end of the outer surface of the second drive wheel 105, the cold air guided by the guide cylinder 203 directly acts on the surface of the tubular filament, achieving simultaneous pre-cooling and shaping. Meanwhile, the fan 202 at the heating end promptly dissipates heat from the fins at the heating end, ensuring that the thermoelectric cooler 201 remains at a stable operating temperature. Then, when the pre-cooled and shaped tubular filament is driven to the outer surface of the two sets of first drive wheels 106... When the surface is at the top and in a horizontal state, the linear module 102 is activated and drives the doctor blade assembly 103 on its moving block to move. The lower surface of the doctor blade assembly 103 scrapes against the screen plate in the printing table 104. Through the squeezing action of the doctor blade assembly 103 on the screen plate, the ink on the screen plate is accurately printed onto the surface of the tubular filament in a horizontal state below. Since the tubular filament is in a stable transmission state, the moving speed of the doctor blade assembly 103 can be accurately matched with the transmission speed of the tubular filament, forming a stable dynamic printing line, thus completing the printing operation on the tubular filament.
[0023] In summary: By relying on the sliding adjustment structure of the electric push rod 107 driving the guide block 108 to drive the first transmission wheel 106, tubular filaments of different diameters can be quickly adapted without cumbersome disassembly and assembly, realizing the convenience of clamping tubular filaments and adapting them to the equipment. Furthermore, through the synergy of the thermoelectric cooler 201 and the guide cylinder 203, synchronous pre-cooling and shaping are completed during the transmission of tubular filaments, effectively eliminating static electricity and tension fluctuations. Then, the doctor blade assembly 103 driven by the linear module 102 can be precisely linked with the speed of the transmission wheel group to form a stable dynamic printing line, solving the pain points of blurred imprints and misalignment in traditional equipment.
[0024] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A transmission extrusion tubular filament printing machine based on pre-cooling technology, characterized in that, include: Mounting platform (1), one end of which is fixedly mounted with an electric push rod (107) embedded in it. One end of the piston rod of the electric push rod (107) is fixedly mounted with a guide rail block (108) and slidably mounted in a guide rail frame (101). The guide rail frame (101) is fixedly mounted at one end of the mounting platform (1). One end of the guide rail block (108) is rotatably mounted with two sets of first transmission wheels (106) in a relative position. One end of the mounting platform (1) is rotatably mounted with two sets of second transmission wheels (105) in a relative position and located outside the two sets of first transmission wheels (106). Two sets of pre-cooling mechanisms (2) are fixedly mounted on the surface of the mounting platform (1) embedded in it and are perpendicular to the lower end of the outer surface of the two sets of second transmission wheels (105).
2. The transmission extrusion tubular screen printing machine based on pre-cooling technology according to claim 1, characterized in that: Two sets of motors are fixedly installed at the other end of the two sets of mounting platforms (1). The output shafts of the two sets of motors rotate through the mounting platform (1) and are fixedly connected to the two sets of second transmission wheels (105).
3. The transmission extrusion tubular screen printing machine based on pre-cooling technology according to claim 1, characterized in that: The conveying path of the tubular filament is to pass through the lower end of the outer surface of the first group of second transmission wheels (105), the upper end of the outer surface of the two groups of first transmission wheels (106), and the lower end of the outer surface of the second group of second transmission wheels (105) in sequence and complete the insertion. The conveying section of the tubular filament at the lower end of the outer surface of the second transmission wheel (105) is adapted to the pre-cooling end of the pre-cooling mechanism (2) to realize synchronous pre-cooling and shaping during the conveying process.
4. The transmission extrusion tubular screen printing machine based on pre-cooling technology according to claim 1, characterized in that: A linear module (102) is fixedly installed at one end of the mounting platform (1). A doctor blade assembly (103) is fixedly installed at one end of the moving block of the linear module (102). The lower surface of the doctor blade assembly (103) scrapes against the screen plate inside the printing table (104). The printing table (104) is fixedly installed at one end of the linear module (102) and is perpendicular to the tubular filaments that are horizontally arranged on the upper surface of the two sets of first transmission wheels (106).
5. A transmission extrusion tubular screen printing machine based on pre-cooling technology according to claim 1, characterized in that: The precooling mechanism (2) includes a thermoelectric cooler (201), and fins are provided on both the cooling end and the heating end of the thermoelectric cooler (201), and a fan (202) is installed on each of the fins.
6. A transmission extrusion tubular screen printing machine based on pre-cooling technology according to claim 5, characterized in that: A guide cylinder (203) is fixedly installed on the upper surface of the fan (202) mounted on the cooling end of the thermoelectric cooler (201), and the other end of the guide cylinder (203) is perpendicular to the lower surface of the second transmission wheel (105).