A screen printing machine frame
Patent Information
- Application Number
- CN202522005825.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-17
- Publication Date
- 2026-09-04
- Estimated Expiration
- 2035-09-17
AI Technical Summary
[0003]当前的丝印机架采用竖直升降结构(如滚珠丝杠)驱动水平输送的直线电机升降，由于安装在直线电机移动端上的刮板组件自重以及直线电机重点的影响，竖直升降结构的升降端会有刹停不及时，或溜动的情况，会导致刮板组件直接与丝印用的网板碰撞，从而导致网板或刮板组件损坏，以及会产生油墨四溅导致的污染问题，目前也有丝印机架急停时通过电磁铁推动橡胶摩擦块压紧导轨，依赖摩擦力制动，但是橡胶摩擦块在反复冲击下发生分子链断裂，使用寿命短，进而使成本增加，而且，直接接触的制动，会加剧导轨的磨损，以及，橡胶摩擦块在较冷的环境使用时(具体为北方)，会产生弹性形变失效导致的硬化，容易硬化膨胀卡死导轨，或收缩导致制动失效，适用范围较小，且橡胶摩擦块由于磨损，也影响连续丝印的稳定性和丝印的精度
[0017]该丝印机架通过竖直调节组件与水平调节组件之间的连接，竖直调节组件用于将水平调节组件沿竖直方向往复输送，通过水平调节组件的作用，用于对安装的刮板沿水平方向进行输送刮墨，通过弹片的弧顶部，可以持续与竖直调节组件的支撑端抵接，由于弹片可以弹性变形，在与竖直调节组件的支撑端抵接时，可发生一定的弹性形变，从而产生弹性作用力辅助竖直调节组件的输送端刹停，削减瞬间冲击载荷，避免竖直调节组件的输送端急停时溜车导致的刮板与网板撞击和油墨污染问题，进一步的，相对于橡胶垫提高摩擦力，弹片可以相对磨损减少，使用寿命更长，并且可以自适应调整，提高摩擦力的同时避免竖直调节组件的输送端输送过程中卡死的情况，配合锁紧机构在竖直调节组件输送端停止时锁止，形成柔缓冲和硬锁定的双级防护，能够进一步避免在水平调节组件运转过程中竖直调节组件的输送端溜车，提高连续丝印的稳定性和丝印的精度。
Smart Images
Figure CN224714645U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screen printing technology, specifically to a screen printing machine frame. Background Technology
[0002] As the core load-bearing structure of screen printing equipment, screen printing machine frames are widely used in scenarios such as consumer electronics logo printing, mass production of industrial signs, and high-speed printing of packaging box labels. With the upgrading of intelligent manufacturing, screen printing machine frames have three rigid requirements: high load stability (bearing ≥50kg scraper assembly), emergency stop accuracy, and cycle life. Especially in high-frequency continuous production, the dynamic rigidity of the frame directly determines the printing quality.
[0003] Current screen printing machines use a vertical lifting structure (such as a ball screw) to drive a horizontally conveying linear motor for lifting. Due to the weight of the scraper assembly mounted on the moving end of the linear motor and the influence of the motor's weight, the lifting end of the vertical lifting structure may not stop in time or may slip, causing the scraper assembly to collide directly with the screen printing stencil. This can lead to damage to the stencil or scraper assembly, as well as ink splattering and contamination. Some screen printing machines use electromagnets to push rubber friction blocks to press against the guide rails during emergency stops, relying on friction for braking. However, the rubber friction blocks experience molecular chain breakage under repeated impacts, resulting in a short service life and increased costs. Furthermore, direct contact braking exacerbates guide rail wear. In colder environments (specifically in northern regions), the rubber friction blocks may harden due to elastic deformation failure, easily hardening and expanding to jam the guide rails, or contracting to cause braking failure. This limits their applicability. Additionally, wear on the rubber friction blocks affects the stability and accuracy of continuous screen printing. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a screen printing machine frame that solves the problems mentioned in the background section.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] Design a screen printing machine frame, including a vertical adjustment component, a horizontal adjustment component, and a locking component;
[0007] The horizontal adjustment component is located at the conveying end of the vertical adjustment component, and the horizontal adjustment component is used to convey and scrape ink from the installed scraper in the horizontal direction.
[0008] The locking assembly includes a spring piece and a locking mechanism disposed on the conveying end of the vertical adjustment assembly. The spring piece is provided with an arc-shaped top, the surface of which abuts against the supporting end of the vertical adjustment assembly. The locking mechanism is used to lock the conveying end and the supporting end of the vertical adjustment assembly.
[0009] It also includes a triggering component, which is used to stop the locking mechanism when the vertical adjustment component conveying end is running, and to run the locking mechanism when the vertical adjustment component conveying end is stopped.
[0010] Optionally, the vertical adjustment assembly includes a support mechanism and a vertical adjustment mechanism. The vertical adjustment mechanism is at least partially slidably connected to the support mechanism. The spring and the locking mechanism are both disposed on the conveying end of the vertical adjustment mechanism, and the arc-shaped top of the spring abuts against the support mechanism. The locking mechanism is used to lock the conveying ends of the support mechanism and the vertical adjustment mechanism.
[0011] Optionally, the vertical adjustment mechanism includes a drive motor, a lead screw, and a slide. One end of the lead screw is fixedly connected to the output end of the drive motor. The end face of the slide is threadedly connected to the outer surface of the lead screw through a threaded hole. The slide is slidably connected to the support mechanism. The spring and the locking mechanism are both mounted on the slide.
[0012] Optionally, the support mechanism includes a mounting housing and a support shaft. The drive motor is disposed inside the mounting housing. The support shaft is fixedly connected inside the mounting housing and located on one side of the drive motor. The slide is slidably connected inside the mounting housing. The surface of the mounting housing is provided with a guide groove that mates with the slide along a first direction. The slide extends at least partially out of the mounting housing through the guide groove. The end face of the slide inside the mounting housing is slidably connected to the outer surface of the support shaft through a through hole. The arc-shaped top of the spring is located inside the through hole of the slide and abuts against the outer surface of the support shaft.
[0013] Optionally, the locking mechanism includes a piezoelectric ceramic block, a sleeve, and a telescopic block. One end of the sleeve is fixedly connected to the slide table, and the other end is slidably connected to the telescopic block through a slot. One end of the piezoelectric ceramic block is fixedly connected to the bottom of the slot of the sleeve, and the other end abuts against the telescopic block. The telescopic block is slidably connected to the slide table and is at least partially located in the through hole of the slide table.
[0014] Optionally, the horizontal adjustment component includes a linear motor body, the fixed end of which is fixedly connected to the portion of the slide extending out of the mounting housing, and the moving end of which is used to convey and scrape ink onto the mounted scraper in the horizontal direction.
[0015] Optionally, the triggering component includes a control module and a driver, and the input terminals of the drive motor, piezoelectric ceramic block, and linear motor body are all electrically connected to the driver.
[0016] This utility model provides a screen printing machine frame, which has the following advantages:
[0017] The screen printing frame is connected by a vertical adjustment component and a horizontal adjustment component. The vertical adjustment component reciprocates the horizontal adjustment component in the vertical direction. The horizontal adjustment component, in turn, feeds the installed squeegee horizontally to scrape ink. The curved top of the spring contact point continuously abuts against the support end of the vertical adjustment component. Because the spring contact point is elastically deformable, it undergoes a certain elastic deformation upon contact with the support end of the vertical adjustment component, generating an elastic force to assist in stopping the conveyor end of the vertical adjustment component, reducing instantaneous impact load, and preventing the vertical adjustment component from... To address the issues of scraper-screen collision and ink contamination caused by sudden stoppage at the conveyor end, the spring sheet, compared to rubber pads, increases friction, resulting in reduced wear and a longer service life. It also features adaptive adjustment, improving friction while preventing jamming at the conveyor end of the vertical adjustment component. Combined with a locking mechanism that locks when the vertical adjustment component stops, it provides dual-level protection of soft buffering and hard locking. This further prevents slippage at the conveyor end of the vertical adjustment component during operation of the horizontal adjustment component, improving the stability and accuracy of continuous screen printing. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the screen printing machine frame in this utility model;
[0019] Figure 2 This is a schematic diagram of the position adjustment of the vertical adjustment mechanism in this utility model;
[0020] Figure 3 This is a front view cross-sectional structural diagram of the screen printing machine frame in this utility model;
[0021] Figure 4 In this utility model Figure 3 A magnified structural diagram of part A.
[0022] In the diagram: 10. Vertical adjustment assembly; 11. Support mechanism; 111. Mounting housing; 112. Support shaft; 12. Vertical adjustment mechanism; 121. Drive motor; 122. Lead screw; 123. Slide table; 20. Horizontal adjustment assembly; 21. Linear motor body; 30. Locking assembly; 311. Spring; 32. Locking mechanism; 321. Piezoelectric ceramic block; 322. Sleeve; 323. Telescopic block. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0024] Please see Figures 1 to 4 The present invention provides a technical solution: a frame, specifically used in screen printing, for supporting and conveying the squeegee assembly, which can reduce the vertical slippage of the squeegee assembly (squeegee) due to vibration or its own weight when the squeegee assembly (squeegee) moves horizontally, thus ensuring the accuracy of screen printing.
[0025] Please see Figures 1 to 4 The present invention provides a technical solution: a screen printing machine frame, comprising a vertical adjustment component 10, a horizontal adjustment component 20 and a locking component 30;
[0026] The horizontal adjustment component 20 is set at the conveying end of the vertical adjustment component 10. The horizontal adjustment component 20 is used to convey and scrape ink from the installed scraper in the horizontal direction.
[0027] The locking assembly 30 includes a spring piece 311 and a locking mechanism 32 disposed on the conveying end of the vertical adjustment assembly 10. The spring piece 311 is provided with an arc-shaped top, and the surface of the arc-shaped top abuts against the support end of the vertical adjustment assembly 10. The locking mechanism 32 is used to lock the conveying end and the support end of the vertical adjustment assembly 10.
[0028] It also includes a triggering component, which is used to stop the locking mechanism 32 when the vertical adjustment component 10 is in operation and to operate the locking mechanism 32 when the vertical adjustment component 10 is stopped.
[0029] In this embodiment, as a preferred solution, the horizontal adjustment component 20 is equipped with a scraper integrated into the conveying end of the vertical adjustment component 10, forming a moving base; the spring 311 of the locking component 30 is specifically a spring steel spring, which continuously and elastically abuts the support end with its arc top, providing an adaptive pre-pressure of 5-15N. During emergency stop, it reduces the impact kinetic energy through deformation (increasing friction). The trigger component (e.g., a relay or driver) disconnects the power supply to the locking mechanism 32 when the vertical adjustment component 10 is running. Within 50ms after stopping, the pneumatic wedge block is activated to apply a rigid locking force, which can be understood as a pushing or squeezing force. The friction of the spring 311 improves the service life of the rubber pad and can avoid low-temperature jamming. The spring 311 can also help absorb high-frequency vibrations, and the locking mechanism 32 suppresses low-frequency drift, reducing the overall vibration amplitude. This structure reduces the occurrence of screen printing plate impact accidents, thereby reducing maintenance costs, and especially solving the problem of screen printing plate loss caused by the machine slipping during emergency stop of screen printing.
[0030] In this embodiment, as a preferred option, the vertical adjustment assembly 10 includes a support mechanism 11 and a vertical adjustment mechanism 12. At least a portion (i.e., the conveying end) of the vertical adjustment mechanism 12 is slidably connected to the support mechanism 11. A spring plate 311 and a locking mechanism 32 are both disposed on the conveying end of the vertical adjustment mechanism 12, with the arcuate apex of the spring plate 311 abutting against the support mechanism 11. The locking mechanism 32 is used to lock the connection between the support mechanism 11 and the conveying end of the vertical adjustment mechanism 12. The vertical adjustment mechanism 12, through its at least partial slidable connection to the support mechanism 11, forms the basis for the lifting motion. The spring plate 311 and the locking mechanism 32 are integrated into the vertical adjustment mechanism 12. 2. Conveying end: The top of the spring 311 elastically abuts against the surface (guide rail surface) of the support mechanism 11 with a preload of 15N. During emergency stop, the deformation of the spring 311 absorbs the impact kinetic energy. The locking end of the locking mechanism 32 abuts against the support mechanism 11 when the machine stops, applying locking pressure to the support mechanism 11. The spring 311 maintains contact throughout the lifting process, and the friction coefficient is stable at 0.15±0.01 (-30~80℃). Compared with the separate brake, the power consumption is reduced. The spring 311 continuously abuts and rubs, and the preload generated is less wear and less prone to damage than the brake that is initially separated and directly impacts and locks. The maintenance cost is greatly reduced.
[0031] In this embodiment, as a preferred option, the vertical adjustment mechanism 12 includes a drive motor 121, a threaded screw 122, and a slide 123. One end of the threaded screw 122 is fixedly connected to the output end of the drive motor 121. The end face of the slide 123 is threadedly connected to the outer surface of the threaded screw 122 through a threaded hole. The slide 123 is slidably connected to the support mechanism 11. The spring piece 311 and the locking mechanism 32 are both disposed on the slide 123.
[0032] Through the connection between the drive motor 121 and the lead screw 122, the drive motor 121 can drive the lead screw 122 to rotate. Through the connection between the lead screw 122 and the slide table 123, the rotation of the lead screw 122 can raise and lower the slide table 123. Through the connection between the slide table 123 and the support mechanism 11, the support mechanism 11 plays a role in assisting the guidance of the slide table 123. The extension direction of the support mechanism 11 is the same as the extension direction of the lead screw 122. Therefore, the support mechanism 11 can play a role in assisting the guidance of the slide table 123.
[0033] More specifically, there is a transmission assembly between the lead screw 122 and the drive motor 121. The transmission assembly consists of a worm gear and a worm. The worm gear is fixedly connected to one end of the lead screw 122, and the drive shaft of the drive motor 121 is fixedly connected to the worm. The worm gear and the worm mesh with each other. The worm gear and the worm are known technologies, and are cited here for the purpose of transmitting the rotational force of the drive motor 121 to the lead screw 122, so that the lead screw 122 rotates.
[0034] In this embodiment, as a preferred solution, the drive motor 121 is a known technology and is only cited here. Its purpose is to drive the threaded screw 122 to rotate, and to make the slide table 123 slide back and forth in the vertical direction (i.e., the extension direction of the threaded screw 122) through the threaded screw 122.
[0035] In this embodiment, as a preferred solution, the support mechanism 11 includes a mounting shell 111 and a support shaft 112. A drive motor 121 is disposed within the mounting shell 111. The support shaft 112 is fixedly connected within the mounting shell 111 and located on one side of the drive motor 121. A slide 123 is slidably connected within the mounting shell 111. A guide groove cooperating with the slide 123 is formed on the surface of the mounting shell 111 along a first direction. The slide 123 extends at least partially out of the mounting shell 111 through the guide groove. The end face of the slide 123 located within the mounting shell 111 is slidably connected to the outer surface of the support shaft 112 through a through hole. The arc-shaped top of the spring piece 311 is positioned... The slide 123 is located within the through hole of the slide table 123 and abuts against the outer surface of the support shaft 112. The mounting housing 111 is connected to the drive motor 121 through the connection between the mounting housing 111 and the drive motor 121. The mounting housing 111 supports and protects the drive motor 121 through the connection between the support shaft 112 and the mounting housing 111. The mounting housing 111 supports and fixes the support shaft 112 through the connection between the slide table 123 and the mounting housing 111. The slide table 123 can slide back and forth in the vertical direction (which is also the direction of extension of the internal space of the threaded screw 122 and the mounting housing 111) within the mounting housing 111. The sliding of the slide table 123 is based on the number of revolutions of the threaded screw 122.
[0036] In this embodiment, as a preferred solution, the locking mechanism 32 includes a piezoelectric ceramic block 321, a sleeve 322, and a telescopic block 323. One end of the sleeve 322 is fixedly connected to the slide table 123 (it can be fixed by bolts when the slide table 123 is not sleeved on the support shaft 112), and the other end is slidably connected to the telescopic block 323 through a slot. One end of the piezoelectric ceramic block 321 is fixedly connected to the bottom of the slot of the sleeve 322, and the other end abuts against the telescopic block 323. The telescopic block 323 slides... Connected within the slide table 123 and at least partially located within the through hole of the slide table 123, the telescopic block 323 can slide within the sleeve 322 via the connection between the telescopic block 323 and the sleeve 322. The piezoelectric ceramic block 321 is a prior art technology. Through the action of the piezoelectric ceramic block 321, it expands when energized, pushing the telescopic block 323 out of the sleeve 322 until the telescopic block 323 presses against the support shaft 112 to achieve locking. The movement of the piezoelectric ceramic block 321 is controllable and is a prior art technology.
[0037] In this embodiment, as a preferred option, the horizontal adjustment component 20 includes a linear motor body 21. The fixed end of the linear motor body 21 is fixedly connected to the part of the slide table 123 that extends out of the mounting shell 111. The moving end of the linear motor body 21 is used to convey and scrape ink from the mounted scraper in the horizontal direction. Since the ink is scraped in the horizontal direction, the accuracy is not guaranteed during the screen printing process, and the conveying needs to be stable and the vibration small. Therefore, the use of a linear motor is common knowledge to those skilled in the art.
[0038] In this embodiment, as a preferred solution, the triggering component includes a control module and a driver. The input terminals of the drive motor 121, the piezoelectric ceramic block 321, and the linear motor body 21 are all electrically connected to the driver. The control module and the driver are both existing known technologies, which are only referenced here without analyzing the principle. The control module can control the driver to drive the motor 121 to rotate forward and backward and simultaneously control whether to apply voltage to the piezoelectric ceramic block 321. The conveying path of the linear motor body 21 can be preset in the control module. The control is achieved through the control module and the driver.
[0039] Although embodiments of the present invention 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 the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A screen printing machine frame, characterized in that: It includes a vertical adjustment assembly (10), a horizontal adjustment assembly (20), and a locking assembly (30); The horizontal adjustment component (20) is disposed at the conveying end of the vertical adjustment component (10), and the horizontal adjustment component (20) is used to convey and scrape ink from the installed scraper in the horizontal direction. The locking assembly (30) includes a spring piece (311) and a locking mechanism (32) disposed on the conveying end of the vertical adjustment assembly (10). The spring piece (311) is provided with an arc top, the surface of which abuts against the supporting end of the vertical adjustment assembly (10). The locking mechanism (32) is used to lock the conveying end and the supporting end of the vertical adjustment assembly (10). It also includes a triggering component, which is used to stop the locking mechanism (32) when the vertical adjustment component (10) is in operation and to operate the locking mechanism (32) when the vertical adjustment component (10) is stopped.
2. The screen printing machine frame according to claim 1, characterized in that: The vertical adjustment assembly (10) includes a support mechanism (11) and a vertical adjustment mechanism (12). The vertical adjustment mechanism (12) is at least partially slidably connected to the support mechanism (11). The spring piece (311) and the locking mechanism (32) are both disposed on the conveying end of the vertical adjustment mechanism (12). The top arc of the spring piece (311) abuts against the support mechanism (11). The locking mechanism (32) is used to lock the connection between the support mechanism (11) and the conveying end of the vertical adjustment mechanism (12).
3. A screen printing machine frame according to claim 2, characterized in that: The vertical adjustment mechanism (12) includes a drive motor (121), a threaded screw (122) and a slide (123). One end of the threaded screw (122) is fixedly connected to the output end of the drive motor (121). The end face of the slide (123) is threadedly connected to the outer surface of the threaded screw (122) through a threaded hole. The slide (123) is slidably connected to the support mechanism (11). The spring piece (311) and the locking mechanism (32) are both set on the slide (123).
4. A screen printing machine frame according to claim 3, characterized in that: The support mechanism (11) includes a mounting shell (111) and a support shaft (112). The drive motor (121) is disposed inside the mounting shell (111). The support shaft (112) is fixedly connected inside the mounting shell (111) and located on one side of the drive motor (121). The slide (123) is slidably connected inside the mounting shell (111). The surface of the mounting shell (111) is provided with a guide groove that cooperates with the slide (123) along a first direction. The slide (123) extends out of the mounting shell (111) at least partially through the guide groove. The end face of the slide (123) inside the mounting shell (111) is slidably connected to the outer surface of the support shaft (112) through a through hole. The arc top of the spring piece (311) is located inside the through hole of the slide (123) and abuts against the outer surface of the support shaft (112).
5. A screen printing machine frame according to claim 3, characterized in that: The locking mechanism (32) includes a piezoelectric ceramic block (321), a sleeve (322) and a telescopic block (323). One end of the sleeve (322) is fixedly connected to the slide table (123), and the other end is slidably connected to the telescopic block (323) through a slot. One end of the piezoelectric ceramic block (321) is fixedly connected to the bottom of the slot of the sleeve (322), and the other end abuts against the telescopic block (323). The telescopic block (323) is slidably connected to the slide table (123) and is at least partially located in the through hole of the slide table (123).
6. A screen printing machine frame according to claim 5, characterized in that: The horizontal adjustment assembly (20) includes a linear motor body (21), the fixed end of which is fixedly connected to the part of the slide (123) that extends out of the mounting shell (111), and the movable end of which is used to convey and scrape ink to the mounted scraper in the horizontal direction.
7. A screen printing machine frame according to claim 6, characterized in that: The triggering component includes a control module and a driver. The input terminals of the drive motor (121), the piezoelectric ceramic block (321), and the linear motor body (21) are all electrically connected to the driver.