Paste printing machine

Abstract

This utility model relates to the field of printing equipment technology, specifically to a rubber printing machine. It includes a printing platform, a linear slide mounted above the printing platform, a movable base mounted on the drive end of the linear slide, and two tension adjustment components mounted on the bottom of the movable base. A scraper and a coating component are respectively mounted on the bottom of the two tension adjustment components. The coating component includes a movable plate with a material chamber inside. A feed inlet is located on the top side of the material chamber, and a glue outlet plate is mounted on the bottom of the material chamber. The surface of the glue outlet plate has several glue outlet holes, and several brush bristles are mounted on the outer side of the glue outlet plate. This rubber printing machine significantly improves the uniformity and accuracy of glue coating. In the coating component, the material chamber stably supplies glue through the several glue outlet holes of the glue outlet plate, and the outer brush bristles can evenly comb and adhere the glue to the surface of the substrate, solving the problem of uneven glue coverage when printing on rough surfaces using traditional equipment.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, and more specifically, to a glue printing machine. Background Technology

[0002] In the field of printing equipment technology, offset printing presses play a crucial role. Since its invention in the early 20th century by Caspar Hermann and Ira Washington Rubel, offset printing technology has undergone significant development and now occupies an important position in the printing and media industry. However, traditional offset printing presses have some shortcomings in practical applications. For example, when printing on certain special materials, it is difficult to precisely control the coating thickness and uniformity of the offset, leading to unstable print quality. Similarly, when printing on substrates with rough surfaces, ordinary offset printing presses struggle to ensure that the offset evenly covers the surface, thus affecting the clarity and integrity of the image.

[0003] Prior art document CN109080253A discloses a novel offset printing machine, which improves the automation level of printing to a certain extent, but there is still room for improvement in the coordinated operation of adhesive application and removal. When dealing with substrates of varying thicknesses, this offset printing machine cannot easily and accurately adjust the working force and position of the squeegee and coating components, leading to situations where there is too much or too little adhesive during printing, severely affecting the printing effect. This utility model aims to provide an adhesive printing machine that, through a unique structural design, effectively solves the above-mentioned problems existing in the prior art, improving the quality and efficiency of adhesive printing. Utility Model Content

[0004] The purpose of this invention is to provide an adhesive printing machine to solve the problem mentioned in the background art that when offset printing machines are faced with substrates of different thicknesses, it is difficult to conveniently and accurately adjust the working force and position of the squeegee and coating components, which easily leads to too much or too little adhesive during the printing process, seriously affecting the printing effect.

[0005] To achieve the above objectives, this utility model provides a glue printing machine, including a printing platform. A linear slide is installed above the printing platform, and a movable seat is installed on the drive end of the linear slide. Two tension adjustment components are installed at the bottom of the movable seat. A scraper and a brush assembly are respectively installed at the bottom of the two tension adjustment components. The brush assembly includes a movable plate, and a material chamber is provided inside the movable plate. A feed port is provided on the top side of the material chamber, and a glue outlet plate is installed at the bottom of the material chamber. A plurality of glue outlet holes are opened on the surface of the glue outlet plate, and a plurality of brush bristles are installed on the outer side of the glue outlet plate.

[0006] This setup uses the printing platform as the foundation component to support the substrate, providing a stable working surface. A linear slide is mounted above the printing platform, its motor driving a lead screw or synchronous belt to rotate, causing the moving base to reciprocate linearly along a linear guide rail. This allows for the horizontal movement of the coating components and doctor blade above the printing platform. A tension adjustment component at the bottom of the moving base adjusts the pressure between the doctor blade / coating components and the substrate via an internal mechanical structure. The moving plate has a material chamber inside. A glue pump pumps glue into the material chamber through the inlet. Under pressure inside the material chamber, the glue seeps out through the glue outlet holes on the surface of the glue outlet plate, and is then evenly coated onto the substrate surface by the outer brush bristles.

[0007] Preferably, both ends of the linear slide are fixed to the top of the printing platform by brackets.

[0008] This bracket serves to support and fix the linear slide table at a suitable height above the printing platform, ensuring the accuracy of the linear slide table's installation position and keeping the running track of the linear slide table parallel to the surface of the printing platform.

[0009] Preferably, a glue pump is connected to the outside of the feed inlet via a pipeline.

[0010] This setting utilizes a motor-driven impeller to create negative pressure in the feed inlet pipeline, drawing the adhesive from the storage container. The positive pressure in the pipeline then continuously and stably delivers the adhesive into the material chamber. The feed flow rate of the adhesive can be controlled by adjusting parameters such as the motor speed or stroke of the adhesive feed pump.

[0011] Preferably, a connecting plate is installed on the top of the material chamber, and the top of the connecting plate is connected and fixed to the bottom of the tension adjustment assembly.

[0012] This setting involves installing a connecting plate on top of the material chamber and fixing it to the connecting block of the tension adjustment component via bolts or other connectors. This connects the entire coating component to the tension adjustment component, ensuring that the force applied by the tension adjustment component to the coating component can be effectively transmitted while maintaining a stable connection.

[0013] Preferably, the tension adjustment assembly includes a housing, the top of which is fixedly mounted on the bottom of the movable base. A lifting rod is provided inside the housing, and a connecting block is installed at the bottom end of the lifting rod. The bottom of the connecting block slides to the outer side of the bottom of the housing, and the tension of the top of the lifting rod is adjusted by an adjusting rod.

[0014] This feature allows the adjusting rod to move axially when rotated due to the threaded action. The bottom of the adjusting rod is connected to the top of the lifting rod via a specific structure (such as a spring connection). The movement of the adjusting rod compresses or releases the spring, thereby changing the force exerted by the spring on the lifting rod, thus controlling the lifting and lowering of the lifting rod, and ultimately adjusting the working height and pressure of the scraper or brush assembly mounted on the connecting block at the bottom of the lifting rod.

[0015] Preferably, a threaded hole is provided on the upper part of the housing near the adjusting rod, the adjusting rod is threadedly connected to the threaded hole, and a spring is provided between the bottom of the adjusting rod and the top of the lifting rod.

[0016] This feature ensures that when the adjusting rod rotates downwards, it compresses the spring, which then exerts an upward force on the lifting rod. Conversely, when the adjusting rod moves upwards, the spring extends, reducing the force on the lifting rod. The lifting rod achieves stable lifting and lowering motion through the combined action of the spring force and the axial force of the adjusting rod.

[0017] Preferably, the bottom of the adjusting rod is provided with a sliding groove, the top of the lifting rod is inserted into the sliding groove for sliding engagement, and the spring is located at the top inside the sliding groove.

[0018] This feature includes a groove at the bottom of the adjusting rod, within which the top of the lifting rod slides, restricting its movement to a linear motion along the groove and ensuring accurate directional movement. A spring is positioned at the top of the groove, with one end fixed to the inner wall and the other end acting on the top of the lifting rod. Pressure control of the lifting rod is achieved through spring extension and contraction.

[0019] Preferably, both the brush assembly and the scraper are angled.

[0020] When this component moves along the linear slide, its tilt angle initially creates a small contact area with the substrate surface, gradually increasing the contact area as it moves. During adhesive application, the tilted brush assembly allows the bristles to better adhere to the substrate surface, guiding the adhesive to distribute evenly.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] This adhesive printing machine significantly improves the uniformity and accuracy of adhesive coating. In the coating assembly, the material chamber receives a stable supply of adhesive through several dispensing holes in the dispensing plate. Combined with the outer brush bristles, the adhesive is evenly combed and adhered to the substrate surface, solving the problem of uneven adhesive coverage when printing on rough surfaces, a common issue with traditional equipment. Simultaneously, the adhesive pump connected to the feed inlet precisely controls the adhesive supply, preventing excessive or insufficient adhesive and ensuring clear and complete printed images.

[0023] The linear slide moves the moving base synchronously, allowing the tilted scraper and coating components to sequentially complete the continuous operation of applying adhesive and scraping off excess adhesive, reducing the time interval between processes. Compared to the insufficient coordination between adhesive application and scraping in the prior art document CN109080253A, this equipment can significantly improve printing continuity and reduce quality defects caused by poor process connections.

[0024] The tension adjustment assembly precisely controls the pressure of the lifting rod through the threaded engagement of the adjusting rod and the threaded hole. Rotating the adjusting rod changes the spring compression, thereby adjusting the force exerted by the doctor blade and coating assembly on the substrate. This design not only adapts to substrates of different thicknesses but also allows for flexible adjustment of the working force based on the properties of the adhesive (such as viscosity and flowability), solving the problem of inconvenient adjustment in traditional equipment when facing diverse printing needs. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the tension adjustment component in this utility model;

[0027] Figure 3 This is a schematic diagram of the coating component in this utility model;

[0028] The meanings of the labels in the diagram are as follows:

[0029] 1. Printing platform; 2. Linear slide; 3. Moving seat; 4. Tension adjustment assembly; 41. Housing; 42. Lifting rod; 43. Connecting block; 44. Adjusting rod; 45. Spring; 5. Scraper; 6. Coating assembly; 61. Moving plate; 62. Material chamber; 63. Feed port; 64. Dispensing plate; 65. Brush bristles; 66. Connecting plate. Detailed Implementation

[0030] 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.

[0031] This utility model provides a rubber printing machine, such as Figures 1-3As shown, the system includes a printing platform 1, a linear slide 2 mounted on top of the printing platform 1, a movable seat 3 mounted on the drive end of the linear slide 2, two tension adjustment components 4 mounted on the bottom of the movable seat 3, a scraper 5 and a coating component 6 mounted on the bottom of the two tension adjustment components 4 respectively, and a movable plate 61 including a movable plate 61, a material chamber 62 inside the movable plate 61, a feed port 63 on the drive end of one side of the material chamber 62, a glue outlet plate 64 mounted on the bottom of the material chamber 62, a plurality of glue outlet holes opened on the surface of the glue outlet plate 64, and a plurality of brush bristles 65 mounted on the outer side of the glue outlet plate 64.

[0032] In use, the printing platform 1 serves as the basic component supporting the substrate, providing a stable working surface. A linear slide 2 is mounted above the printing platform 1, and its motor drives a lead screw or synchronous belt transmission device to rotate, causing the moving seat 3 to reciprocate linearly on a linear guide rail. This enables the horizontal movement of the coating component 6 and the doctor blade 5 above the printing platform 1. The tension adjustment component 4 at the bottom of the moving seat 3 adjusts the pressure between the doctor blade 5, the coating component 6, and the substrate through an internal mechanical structure. The moving plate 61 has a material chamber 62 inside. The glue pump pumps glue into the material chamber 62 through the inlet 63. Under the pressure inside the material chamber 62, the glue seeps out through the glue outlet holes on the surface of the glue outlet plate 64, and is then evenly coated onto the substrate surface by the outer brush bristles 65. Through the linear slide 2 and the moving seat 3, the doctor blade 5 and the coating component 6 can be precisely moved to any position on the printing platform 1, achieving printing coverage of substrates of different sizes and shapes. The working pressure of the squeegee 5 and the coating component 6 can be flexibly adjusted by the tension adjustment component 4 to adapt to substrates of different thicknesses and adhesive properties. The unique design of the coating component 6 ensures uniform and stable output and coating of adhesive, solving the problem of uneven adhesive coverage when printing on rough surfaces with traditional equipment, and improving the clarity and integrity of printed images.

[0033] In this embodiment, both ends of the linear slide 2 are fixed to the top of the printing platform 1 by brackets.

[0034] During use, the bracket provides support and fixation, securely mounting the linear slide 2 at a suitable height above the printing platform 1. This ensures the accuracy of the linear slide 2's installation position and keeps its running track parallel to the surface of the printing platform 1. This structural design ensures the stability of the linear slide 2's operation, preventing shaking or displacement during work. This, in turn, guarantees the movement accuracy of the moving base 3 and the doctor blade 5 and coating assembly 6 mounted on it, providing assurance for precise adhesive coating and scraping operations and improving the consistency of printing quality.

[0035] Specifically, an adhesive pump is connected to the outside of the feed inlet 63 via a pipeline.

[0036] In operation, the glue pump uses a motor to drive an impeller, creating negative pressure in the inlet 63 pipeline. This draws the glue from the storage container, and then positive pressure in the pipeline continuously and stably delivers the glue into the material chamber 62. By adjusting parameters such as the motor speed or stroke of the glue pump, the glue feed rate can be controlled. This structural design precisely controls the glue supply, accurately adjusting the amount of glue entering the material chamber 62 according to the printing process requirements. This avoids excessive glue accumulation on the substrate surface affecting the printing effect, or insufficient glue leading to incomplete printing, ensuring a stable and appropriate glue supply during the printing process.

[0037] Furthermore, a connecting plate 66 is installed on the top of the material chamber 62, and the top of the connecting plate 66 is connected and fixed to the bottom of the tension adjustment assembly 4.

[0038] In use, by connecting the entire coating assembly 6 to the tension adjustment assembly 4, the force applied by the tension adjustment assembly 4 to the coating assembly 6 can be effectively transmitted, while ensuring a stable connection. This structural design achieves a reliable connection between the coating assembly 6 and the tension adjustment assembly 4, ensuring that when the tension adjustment assembly 4 adjusts the working pressure, it can accurately drive the coating assembly 6 to move, ensuring precise control of the pressure between the coating assembly 6 and the substrate, thereby improving the coating effect.

[0039] Furthermore, the tension adjustment assembly 4 includes a housing 41, the top of which is fixedly mounted on the bottom of the movable seat 3. A lifting rod 42 is slidably arranged inside the housing 41. A connecting block 43 is installed at the bottom end of the lifting rod 42. The bottom of the connecting block 43 extends slidably to the outer side of the bottom of the housing 41. The bottoms of the two connecting blocks 43 are respectively connected to the connecting plate 66 and the scraper 5. The tension of the top of the lifting rod 42 is adjusted by the adjusting rod 44.

[0040] In use, the adjusting rod 44 engages with the threaded hole in the housing 41. When the adjusting rod 44 is rotated, it moves axially due to the thread action, thereby changing the force on the lifting rod 42 and controlling its raising and lowering. This allows for adjustment of the working height and pressure of the doctor blade 5 or the coating assembly 6. Operators can easily rotate the adjusting rod 44 to flexibly adjust the pressure of the doctor blade 5 and the coating assembly 6 on the substrate, adapting to different printing needs. This solves the problem of inconvenient adjustment in traditional equipment when facing diverse printing situations, improving the flexibility of equipment use.

[0041] Furthermore, a threaded hole is provided on the upper part of the outer casing 41 near the adjusting rod 44, the adjusting rod 44 is threadedly connected to the threaded hole, and a spring 45 is provided between the bottom of the adjusting rod 44 and the top of the lifting rod 42.

[0042] In use, the threaded connection between the adjusting rod 44 and the threaded hole provides precise axial displacement adjustment. When the adjusting rod 44 rotates downward, it compresses the spring 45, which generates an upward elastic force acting on the lifting rod 42. Conversely, when the adjusting rod 44 moves upward, the spring 45 extends, reducing the force on the lifting rod 42. The lifting rod 42 rises and falls stably under the combined action of the elastic force of the spring 45 and the axial force of the adjusting rod 44. The spring 45 acts as a buffer and provides fine-tuning of pressure, preventing the adjusting rod 44 from directly and rigidly acting on the lifting rod 42, which could lead to sudden pressure changes. During the printing process, even if there are minor unevennesses on the surface of the substrate, the spring 45 allows the doctor blade 5 and the coating assembly 6 to adaptively adjust the pressure, ensuring uniform and stable adhesive coating and scraping effects, and improving the stability of printing quality.

[0043] Furthermore, the bottom of the adjusting rod 44 is provided with a sliding groove, and the top of the lifting rod 42 is inserted into the sliding groove for sliding engagement. The spring 45 is located at the top inside the sliding groove. The top of the spring 45 is connected to the inner top wall of the sliding groove, and the bottom of the spring 45 is connected to the lifting rod 42.

[0044] In use, the slide restricts the lifting rod 42 to move only in a straight line along the slide direction, ensuring the accuracy of its movement direction. The spring 45 controls the pressure of the lifting rod 42 through extension and contraction. The slide provides precise guidance for the lifting rod 42, preventing it from deviating or wobbling during lifting, further improving the working stability and accuracy of the tension adjustment component 4, ensuring precise control of the working pressure of the scraper 5 and the coating component 6, thereby improving the accuracy of the adhesive handling during the printing process.

[0045] Furthermore, both the brush assembly 6 and the scraper 5 are angled.

[0046] During use, as the linear slide 2 moves, the tilt angle causes the brushes to initially contact the substrate surface with a small contact area, gradually increasing the contact area as the machine moves. During adhesive application, the tilted brush assembly 6 allows the bristles 65 to better adhere to the substrate surface, guiding the adhesive to a uniform distribution. The tilted scraper 5, when removing excess adhesive, utilizes the force generated by the tilt angle to more efficiently scrape away excess adhesive and guide it to the collection device. This structural design improves the efficiency and quality of adhesive application and scraping. The tilted setting ensures more uniform adhesive application, avoiding localized accumulation or uneven application; the scraper 5 removes excess adhesive more thoroughly, reducing residue, while also conforming to ergonomics, facilitating operator observation of the equipment's operating status and maintenance.

[0047] In use, the printing press of this invention first places the substrate to be printed stably on the printing platform 1, ensuring accurate and fixed positioning. Based on the thickness and material of the substrate and the characteristics of the adhesive, the height and pressure of the squeegee 5 and the coating assembly 6 are adjusted using the tension adjustment component 4. Specifically, rotating the adjusting rod 44, utilizing its threaded engagement with the threaded hole on the housing 41, causes the adjusting rod 44 to move axially, compressing or extending the spring 45, thereby changing the force exerted by the lifting rod 42 on the connecting block 43, achieving precise adjustment of the pressure of the squeegee 5 and the coating assembly 6. Simultaneously, the sliding engagement between the lifting rod 42 and the bottom groove of the adjusting rod 44 ensures the stability of the adjustment process.

[0048] Start the glue pump connected to the feed port 63. The glue pump draws glue from the storage container through the pipeline and continuously and stably delivers it into the material chamber 62 of the coating assembly 6. By adjusting parameters such as the motor speed of the glue pump, the flow rate of glue entering the material chamber 62 is controlled to ensure that the amount of glue in the material chamber 62 is appropriate.

[0049] The linear slide 2 is activated, and its motor-driven transmission device moves the movable seat 3 along the linear guide rail. The coating component 6 at the bottom of the movable seat 3 first contacts the substrate. Because the coating component 6 is tilted, the bristles 65 can better adhere to the surface of the substrate. Under pressure, the adhesive in the material chamber 62 seeps out through the adhesive outlet holes on the surface of the adhesive outlet plate 64 and is evenly coated onto the surface of the substrate by the bristles 65. As the movable seat 3 continues to move, the squeegee 5, also tilted, contacts the substrate. Utilizing the force generated by the tilt angle, it efficiently scrapes away excess adhesive from the surface of the substrate, ensuring the adhesive thickness meets printing requirements.

[0050] After the movable seat 3 moves to one end of the printing platform 1 and completes one printing cycle, the linear slide 2 drives the movable seat 3 to move in the opposite direction and reset, ready for the next printing operation. If it is necessary to change the substrate or adjust the printing parameters, the above preparation stage can be repeated.

[0051] Throughout the entire operation, the linear slide 2 is securely mounted on the printing platform 1 via a bracket, ensuring the stability of the movement of the moving seat 3; the connecting plate 66 reliably connects the coating component 6 with the tension adjustment component 4, ensuring the precise transmission of pressure adjustment, thereby achieving efficient and stable adhesive printing.

[0052] Finally, it should be noted that the electronic components in the linear slide 2 and other components in this embodiment are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components are connected by wires. The specific connection method should refer to the working order between the electrical components in the above working principle to complete the electrical connection. All of these are technologies known in the art.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A printing press for adhesives, comprising a printing platform (1), characterized in that: A linear slide (2) is installed above the printing platform (1). A movable seat (3) is installed on the drive end of the linear slide (2). Two tension adjustment components (4) are installed at the bottom of the movable seat (3). A scraper (5) and a coating component (6) are respectively installed at the bottom of the two tension adjustment components (4). The coating component (6) includes a movable plate (61). A material cavity (62) is provided inside the movable plate (61). A feed port (63) is provided on the top of one side of the material cavity (62). A glue dispensing plate (64) is installed at the bottom of the material cavity (62). A plurality of glue dispensing holes are opened on the surface of the glue dispensing plate (64). A plurality of brush bristles (65) are installed on the outer side of the glue dispensing plate (64).

2. The gum printer of claim 1, wherein: Both ends of the linear slide (2) are fixed to the top of the printing platform (1) by brackets.

3. The gum printer of claim 1, wherein: The feed inlet (63) is connected to a glue pump via a pipeline.

4. The gum printer of claim 1, wherein: A connecting plate (66) is installed on the top of the material chamber (62), and the top of the connecting plate (66) is connected and fixed to the bottom of the tension adjustment assembly (4).

5. The gum printer of claim 1, wherein: The tension adjustment assembly (4) includes a housing (41), the top of which is fixedly installed at the bottom of the movable seat (3). A lifting rod (42) is slidably arranged inside the housing (41), and a connecting block (43) is installed at the bottom end of the lifting rod (42). The bottom of the connecting block (43) extends slidably to the outside of the bottom of the housing (41). The tension of the top of the lifting rod (42) is adjusted by an adjusting rod (44).

6. The gum printer of claim 5, wherein: A threaded hole is provided on the upper part of the outer casing (41) near the adjusting rod (44), the adjusting rod (44) is threadedly connected to the threaded hole, and a spring (45) is provided between the bottom of the adjusting rod (44) and the top of the lifting rod (42).

7. The gum printer of claim 6, wherein: The bottom of the adjusting rod (44) is provided with a sliding groove, the top of the lifting rod (42) is inserted into the sliding groove for sliding engagement, and the spring (45) is located at the top inside the sliding groove.

8. The gum printer of claim 1, wherein: Both the coating component (6) and the scraper (5) are inclined.

Images