Multi-head screen printing mechanism and screen printing machine with same

Abstract

The utility model provides a multi-head screen printing mechanism and a screen printing machine with the multi-head screen printing mechanism. The multi-head screen printing assembly comprises a transmission part and a plurality of screen printing structures, and the transmission part is connected with the screen printing structures; and the moving assembly is arranged on the base assembly, and the multi-head screen printing assembly is installed on the moving assembly. According to the technical scheme, the problem that in the prior art, after one Logo is printed, another Logo is printed through rotating glass, and ink is exposed in air for a long time and becomes dry is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of glass screen printing, in particular to a multi-head screen printing mechanism and a screen printing machine having the same. Background Art

[0002] Glass screen printing is a process in automotive glass processing. In the automotive glass processing industry, in order to make the automotive glass beautiful, it is often necessary to print various patterns on the glass surface to enhance the decorative effect of the glass.

[0003] In some existing technologies, automotive glass screen printing machines all operate with a single head. When printing glass with logos on both sides, after printing one logo, the glass needs to be rotated before printing the other one. This not only wastes time, but also the ink will be exposed to the air for a long time and become dry, affecting the printing effect. For example, there is a patent application for an automatic glass screen printing machine with application number 202211155201.X. Utility Model Content

[0004] A technical problem to be solved by the utility model is that after printing one logo, printing another logo by rotating the glass will cause the ink to be exposed to the air for a long time and become dry.

[0005] In order to solve the above technical problems, the embodiment of the present application provides a multi-head silk screen mechanism, including: a base assembly; a multi-head silk screen assembly, the multi-head silk screen assembly includes a transmission part and multiple silk screen structures, the transmission part is connected to the multiple silk screen structures; a moving assembly, the moving assembly is arranged on the base assembly, and the multi-head silk screen assembly is installed on the moving assembly. In some embodiments, the multiple silk screen structures include a first silk screen structure and a second silk screen structure, the first end of the transmission part is connected to the first silk screen structure, and the second end of the transmission part is connected to the second silk screen structure.

[0006] In some embodiments, the first silk screen printing structure includes a first head frame, a first scraper and a first ink knife, and the first scraper and the first ink knife are both mounted on the first head frame so as to be movably mounted up and down. The second silk screen printing structure includes a second head frame, a second scraper and a second ink knife, and the second scraper and the second ink knife are both mounted on the second head frame so as to be movably mounted up and down. The transmission part is connected to the first head frame and the second head frame by threads.

[0007] In some embodiments, the transmission part includes a first threaded rod segment, a connecting rod segment and a second threaded rod segment, the first head frame has a first threaded hole, the second head frame has a second threaded hole, the first threaded rod segment cooperates with the first threaded hole, the second threaded rod segment cooperates with the second threaded hole, and the thread of the first threaded rod segment is opposite to the thread of the second threaded rod segment.

[0008] In some embodiments, the moving assembly includes a horizontal moving structure and a vertical moving structure, the horizontal moving structure is mounted on the base assembly, the vertical moving structure is mounted on the horizontal moving structure, and the multi-head screen printing assembly is mounted on the vertical moving structure.

[0009] In some embodiments, the horizontal moving structure includes a horizontal driving unit, a horizontal screw and a screw slider. The horizontal driving unit is fixed on the base assembly, the horizontal screw is connected to the output end of the horizontal driving unit, the screw slider cooperates with the horizontal screw, and the vertical moving structure is connected to the screw slider.

[0010] In some embodiments, the horizontal movement structure further includes a limit switch, and the limit switch is disposed on the base assembly.

[0011] In some embodiments, the vertical moving structure and the base assembly have mutually cooperating slide rail structures.

[0012] In some embodiments, the vertical moving structure includes a first cylinder and a second cylinder, the first silk screen structure is connected to the output end of the first cylinder, the second silk screen structure is connected to the output end of the second cylinder, the shell of the first cylinder is connected to the screw slider, a first slide rail structure is provided between the first cylinder and the base assembly, and a second slide rail structure is provided between the second cylinder and the base assembly.

[0013] In some embodiments, the multi-head screen printing mechanism described above is included.

[0014] Through the above technical solution, the application provides a multi-head silk screen printing mechanism, which is provided with a transmission part and multiple silk screen structures, and the multi-head silk screen printing assembly is installed on the moving assembly, and then the multiple silk screen structures are driven to move by the moving assembly and the transmission part, so that the printing of multiple silk screen structures can be realized without rotating the glass, first printing one side, and then printing the other side, which causes the ink to dry up after a long interval. The technical solution of the application effectively solves the problem that after printing a logo, printing another logo by rotating the glass, which causes the ink to be exposed to the air for a long time and become dry. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic structural diagram of a multi-head screen printing mechanism in Embodiment 1 of the present application is shown;

[0017] Figure 2 Shows Figure 1 A schematic diagram of a first screen printing structure of a multi-head screen printing mechanism;

[0018] Figure 3 Shows Figure 1 Schematic diagram of the horizontal moving structure of the multi-head silk-screen printing structure;

[0019] Description of reference numerals:

[0020] 10. Base assembly; 20. Multi-head screen printing assembly; 21. Transmission unit; 22. First screen printing structure; 221. First head frame; 222. First scraper; 223. First ink knife; 23. Second screen printing structure; 231. Second head frame; 232. Second scraper; 233. Second ink knife; 30. Moving assembly; 31. Horizontal moving structure; 311. Horizontal driving unit; 312. Horizontal lead screw; 313. Lead screw slider; 314. Limit switch; 32. Vertical moving structure; 321. First cylinder; 322. Second cylinder. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the implementation methods of the present application in conjunction with the accompanying drawings and examples. The detailed descriptions of the following examples and the accompanying drawings are used to exemplarily illustrate the principles of the present application, but cannot be used to limit the scope of the present application. The present application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0022] The present application provides these embodiments to make the present application thorough and complete, and to fully express the scope of the present application to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0023] It should be noted that, in the description of this application, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0024] In addition, the words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0025] It should also be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0026] All terms used in this application have the same meaning as those understood by those of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0027] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0028] like Figures 1 to 3 As shown, embodiment 1 shows a multi-head silk screen printing mechanism, including: a base assembly 10; a multi-head silk screen printing assembly 20, the multi-head silk screen printing assembly includes a transmission part 21 and multiple silk screen structures, the transmission part 21 is connected to the multiple silk screen structures; a moving assembly 30, the moving assembly 30 is arranged on the base assembly 10, and the multi-head silk screen printing assembly 20 is installed on the moving assembly 30. Applying the technical solution of embodiment 1, a multi-head silk screen printing mechanism provided by the present application is provided with a transmission part 21 and multiple silk screen structures, the multi-head silk screen printing assembly 20 is installed on the moving assembly 30, and then the multiple silk screen structures are driven to move by the moving assembly 30 and the transmission part 21, so that the printing of multiple silk screen structures can be realized without rotating the glass, first printing one side, and then printing the other side, which causes the interval time to be long for the ink to dry. The technical solution of the present application effectively solves the problem that after printing a logo, another logo is printed by rotating the glass, which causes the ink to be exposed to the air for a long time and become dry.

[0029] like Figure 1 and Figure 2 As shown, in the technical solution of the first embodiment, the multiple silk-screen structures include a first silk-screen structure 22 and a second silk-screen structure 23, the first end of the transmission part 21 is connected to the first silk-screen structure 22, and the second end of the transmission part 21 is connected to the second silk-screen structure 23. The multiple silk-screen structures are provided with the first silk-screen structure 22 and the second silk-screen structure 23. The provision of the two silk-screen structures can ensure that the two sides of the glass are operated at the same time, and prevent the ink from being exposed to the air for a long time and becoming dry, thereby affecting the printing effect. The two ends of the transmission part 21 are respectively connected to the first silk-screen structure 22 and the second silk-screen structure 23, ensuring that when one silk-screen structure is driven, the other silk-screen structure is also driven due to the transmission part 21, so as to ensure the movement of the first silk-screen structure 22 and the second silk-screen structure 23. The multiple silk-screen structures can also be provided with three, four or more, so that printing operations can be performed on different parts of the glass at the same time.

[0030] like Figure 1 and Figure 2As shown, in the technical scheme of the embodiment, the first silk screen structure 22 includes a first head frame 221, a first scraper 222 and a first ink knife 223, and the first scraper 222 and the first ink knife 223 can be installed on the first head frame 221 so as to be movable up and down, and the second silk screen structure 23 includes a second head frame 231, a second scraper 232 and a second ink knife 233, and the second scraper 232 and the second ink knife 233 can be installed on the second head frame 231 so as to be movable up and down, and the transmission part 21 is connected to the first head frame 221 and the second head frame 231 by threads. The first head frame 221 is provided with a first scraper 222 and a first ink knife 223, which respectively implement scraping and returning ink operations. When the multi-head screen printing mechanism is printing, ink is poured into one end of the printing screen, and a certain pressure is applied to the ink part on the printing screen by the scraper, and the ink is moved at a uniform speed toward the other end of the printing screen. During the movement, the ink is squeezed from the mesh of the part to be printed by the scraper onto the substrate, and then the remaining ink is scraped back by the ink knife, thereby realizing the screen printing function. The tails of the first scraper 222 and the first ink knife 223 are both screw structures, and they are installed on the first head frame 221 in a movable manner by locking screws. This arrangement can not only fix the first scraper 222 and the first ink knife 223 on the first head frame 221, but also adjust the height of the first scraper 222 and the first ink knife 223 according to production needs, and at the same time, the scraping and returning ink operations do not interfere with each other, so that the screen printing effect is better. The second screen printing structure 23 includes a second head frame 231, a second scraper 232 and a second ink knife 233, and its arrangement and working principle are the same as those of the first screen printing structure 22. In addition, the first scraper 222, the first ink knife 223, and the second scraper 232 and the second ink knife 233, the knife body and the knife rod are detachably connected, so as to facilitate the replacement of the knife body and the exchange of the positions of the scraper and the ink knife, thereby realizing reverse printing. The first head frame 221 and the second head frame 231 may be provided with a circular slide rail or a rectangular slide rail, and a slider matched with the slide rail is provided on the slide rail. A fixing part is provided between the slider and the first head frame 221 and the second head frame 231 at the position where the scraper and the ink knife are provided. The slider is connected to the knife rods of the first scraper 222, the first ink knife 223, the second scraper 232 and the second ink knife 233. When the knife rod moves to the required position with the slider, it can be fixed and limited by the fixing part, so that the positions of the first scraper 222, the first ink knife 223, the second scraper 232 and the second ink knife 233 no longer change. The fixing part can be a latch, and the slider and the first head frame 221 and the second head frame 231 are provided with a socket, and the relative position of the slider and the first head frame 221 and the second head frame 231 is fixed by the latch and the socket. In addition, in order to enhance the fixing effect, the fixing part can also be other structural connections, such as threaded connection.The transmission part 21 and the first head frame 221 and the second head frame 231 are all connected by threads, so that one head frame can move with the other head frame through the transmission part 21. At the same time, the threaded connection ensures the stability of the connection between the first head frame 221 and the second head frame 231, and the distance between the first head frame 221 and the second head frame 231 can also be adjusted by locking screws. According to needs, the first head frame 221 and the second head frame 231 can also be provided with dust-cleaning rollers to clean dust on the glass surface to improve the silk-screen printing effect. The first dust-cleaning roller and the second dust-cleaning roller are respectively arranged on the side close to the first scraper 222 and the second scraper 232 and away from the first ink knife 223 and the second ink knife 233. The tail of the first dust-cleaning roller and the second dust-cleaning roller is a screw structure. This arrangement can not only fix the first dust-cleaning roller and the second dust-cleaning roller on the first head frame 221, but also adjust the height of the first dust-cleaning roller and the second dust-cleaning roller after dust cleaning to avoid hindering subsequent operations. When working, first raise the position of the scraper and ink knife, and use the first and second dust-cleaning rollers to clean the dust on the glass surface. After dust cleaning, raise the height of the first and second dust-cleaning rollers, and then adjust the position of the scraper and ink knife to a suitable height for subsequent operations. The first and second dust-cleaning rollers are detachable to facilitate replacement of the dust-cleaning rollers. Depending on the cleanliness, dust-cleaning rollers may not be required.

[0031] like Figure 1As shown, in the technical solution of the first embodiment, the transmission part 21 includes a first threaded rod segment, a connecting rod segment and a second threaded rod segment, the first head frame 221 has a first threaded hole, the second head frame 231 has a second threaded hole, the first threaded rod segment matches the first threaded hole, the second threaded rod segment matches the second threaded hole, and the thread of the first threaded rod segment is opposite to the thread of the second threaded rod segment. The transmission part 21 is threadedly connected with the first head frame 221 and the second head frame 231 by setting the first threaded rod segment and the second threaded rod segment to ensure the stability of the connection, and the connecting rod segment increases the connection length to meet the printing requirements of vehicle-mounted glass of different sizes. The first head frame 221 and the second head frame 231 are respectively provided with a first threaded hole and a second threaded hole to match the first threaded rod segment and the second threaded rod segment, which can not only ensure the fastening effect, but also adjust the distance between the first head frame 221 and the second head frame 231 by fastening screws. The setting that the thread of the first threaded rod section and the thread of the second threaded rod section have opposite rotation directions ensures the stability and reliability of the threaded connection, as well as the synchronization of disassembly and installation, and prevents the loosening caused by the rotation of the screw rod due to the same rotation direction, thereby affecting the tightening effect. A scale mark is also provided on the transmission part 21, which has the function of connecting the transmission on the one hand, and also has the function of adjusting the distance between the first silk-screen structure 22 and the second silk-screen structure 23 on the other hand, so as to facilitate the staff to perform precise distance control to meet the printing requirements of different positions on the glass.

[0032] like Figure 1 and Figure 3 As shown, in the technical solution of the first embodiment, the moving assembly 30 includes a horizontal moving structure 31 and a vertical moving structure 32, the horizontal moving structure 31 is mounted on the base assembly 10, the vertical moving structure 32 is mounted on the horizontal moving structure 31, and the multi-head screen printing assembly 20 is mounted on the vertical moving structure 32. The arrangement of the horizontal moving structure 31 and the vertical moving structure 32 enables the first screen printing structure 22 and the second screen printing structure 23 to move in the horizontal direction and the vertical direction to adapt to different operation requirements. The horizontal moving structure 31 is mounted on the base assembly 10, so that the horizontal moving structure 31 can move horizontally relative to the base assembly 10, and the vertical moving structure 32 is mounted on the horizontal moving structure 31, so that the first screen printing structure 22 and the second screen printing structure 23 can move in the horizontal direction and the vertical direction, so as to achieve the effect of screen printing on glass of different sizes and different positions of the glass.

[0033] like Figure 1 and Figure 3As shown, in the technical solution of the first embodiment, the horizontal moving structure 31 includes a horizontal driving part 311, a horizontal screw rod 312 and a screw slider 313, the horizontal driving part 311 is fixed on the base assembly 10, the horizontal screw rod 312 is connected to the output end of the horizontal driving part 311, the screw slider 313 cooperates with the horizontal screw rod 312, and the vertical moving structure 32 is connected to the screw slider 313. The horizontal moving structure 31 drives the horizontal screw rod 312 through the horizontal driving part 311, so that the rotational motion of the horizontal screw rod 312 is converted into the linear motion of the screw slider 313 to achieve horizontal movement, so that the movement of the screw slider 313 is relatively stable. The horizontal driving part 311 is fixed on the base assembly 10 to achieve the horizontal movement of the screw slider 313 relative to the base assembly 10. The horizontal screw rod 312 can be connected to the output end of the horizontal driving part 311 through a coupling, or it can be connected in other ways. The horizontal driving part 311 can be a stepping motor or other driving methods. The screw slider 313 has a threaded hole that matches the thread of the horizontal screw 312, so that the rotational motion of the horizontal screw 312 is converted into the linear motion of the screw slider 313. The screw slider can also be fixed with a nut, and the linear motion is achieved through the cooperation of the nut and the horizontal screw 312. The vertical moving structure 32 is connected to the screw slider 313, so that the vertical moving structure 32 moves horizontally with the screw slider 313. The vertical moving structure 32 and the screw slider 313 can be detachably connected by fasteners, or fixedly connected by welding or the like. The horizontal moving structure 31 may also include a horizontal slide rail that is arranged in parallel with the horizontal screw rod 312 and cooperates with the base assembly 10, a horizontal slider that cooperates with the slide rail is arranged on the horizontal slide rail, the first head frame 221 is fixedly connected with the screw slider 313 and the horizontal slider on the horizontal slide rail, so as to realize the movement of the first silk screen structure 22 in the horizontal direction, the second head frame 231 is only connected with the horizontal slider, and the first head frame 221 and the second head frame 231 are connected through the transmission part 21, so as to realize the sliding of the first silk screen structure 22 and the second silk screen structure 23 in the horizontal position. Such a setting has better load-bearing capacity, so that the sliding of the first silk screen structure 22 and the second silk screen structure 23 in the horizontal direction is more stable. The horizontal slider can be one or more, and the slide rail structure can be set to a connection in the form of a dovetail groove. This setting method provides a larger surface contact, which helps to improve the connection strength and is not easy to derail.

[0034] like Figure 1 and Figure 3As shown, in the technical solution of embodiment 1, the horizontal moving structure 31 also includes a limit switch 314, and the limit switch 314 is arranged on the base assembly 10. The setting of the limit switch limits the sliding distance of the first silk screen structure 22 and the second silk screen structure 23 in the horizontal position, thereby ensuring the safety of the silk screen head. The limit switch 314 can be arranged on the base assembly 10, or it can be arranged at both ends of the horizontal screw rod 312. The limit switch 314 can be a screw rod limit ring arranged at both ends of the horizontal screw rod 312, which fixes the two ends of the horizontal screw rod 312 to prevent the first silk screen structure 22 and the second silk screen structure 23 from falling off the slide rail. The limit switch 314 can also be a limit baffle arranged on the base assembly 10, which blocks the two ends of the horizontal screw rod 312 to prevent the first silk screen structure 22 and the second silk screen structure 23 from falling off the slide rail. As needed, the limit switch 314 can also adopt other devices.

[0035] like Figure 1 and Figure 2 As shown, in the technical solution of the first embodiment, the vertical moving structure 32 and the base assembly 10 have a slide rail structure that cooperates with each other. This setting can adjust the movement distance of the first screen printing structure 22 and the second screen printing structure 23 in the vertical direction. The slide rail structure can be set to a dovetail groove type connection. This setting method provides a larger surface contact, which helps to improve the connection strength, so that the vertical moving structure 32 and the base assembly 10 are stably connected.

[0036] like Figure 1 and Figure 2As shown, in the technical solution of the first embodiment, the vertical moving structure 32 includes a first cylinder 321 and a second cylinder 322, the first screen printing structure 22 is connected to the output end of the first cylinder 321, the second screen printing structure 23 is connected to the output end of the second cylinder 322, the housing of the first cylinder 321 is connected to the screw slider 313, a first slide rail structure is provided between the first cylinder 321 and the base assembly 10, and a second slide rail structure is provided between the second cylinder 322 and the base assembly. By providing the first cylinder 321 and the second cylinder 322, the first screen printing structure 22 and the second screen printing structure 23 can realize movement in the vertical direction, and the first cylinder 321 and the second cylinder 322 are respectively connected to the output ends of the first screen printing structure 22 and the second screen printing structure 23 through a coupling, or they can be connected in other ways. A hydraulic or electric linear actuator can also be provided to replace the first cylinder 321 and the second cylinder 322. The slide rail structure includes a first slide rail structure and a second slide rail structure, and the first slide rail structure and the second slide rail structure may be an integral structure or may not be an integral structure. The base assembly 10 includes a screen structure and a vertical plate structure, the screen structure is used to place glass for screen printing, the vertical plate structure is arranged on the screen structure, and the moving assembly is fixed on the vertical plate structure to realize the horizontal and vertical movement of the first screen printing structure 22 and the second screen printing structure 23, thereby meeting the requirements of performing different operations on the glass on the screen structure.

[0037] The head frame (the first head frame 221 and the second head frame 231) is a rectangular frame mainly made of stainless steel, and a knife tail bracket is fixed on each side of the frame, and the scraper (the first scraper 222 and the second scraper 232) and the ink knife (the first ink knife 223 and the second ink knife 233) are fixed on the knife tail bracket. The tail of the scraper and the ink knife are both screw structures, which are fixed to the bracket by locking screws. The head frame and the lifting cylinder (vertical moving structure 32) are connected by a connecting steel plate, and the connecting steel plate is made of 304 stainless steel. The lifting cylinder is then connected to the sliding steel plate, and the sliding steel plate is made of 304 stainless steel.

[0038] The back slide rail structure is mainly composed of a back steel plate (horizontal moving structure 31), and the back steel plate is made of 304 stainless steel. A guide rail (horizontal slide rail) is installed above and below the back steel plate, and a ball screw (horizontal screw 312) is installed in the middle. The ball screw is driven by a stepper motor (horizontal drive unit 311). A guide rail slider (horizontal slider) is installed on each of the two guide rails, and a screw slider (313) is installed on the ball screw. The sliding steel plate (connecting the screw slider 313, the horizontal slider and the first head frame 221) is fixed on the two guide rail sliders and the screw slider respectively. The guide rail mainly plays a load-bearing role, and the ball screw plays a driving role. A limit switch 314 is installed at each end of the ball screw to ensure the safety of the screen printing head.

[0039] The sliding steel plate of one of the screen printing heads (first screen printing structure 22) is fixed on two guide rail sliders and a screw slider, and the other screen printing head (second screen printing structure 23) is only fixed on two guide rail sliders, and the two screen printing heads are connected by connecting the screw (transmission part 21). When a screen printing head fixed on the screw slider is driven, the other head is driven to move by the connecting screw, and the head not fixed on the screw slider can slide on the guide rail by adjusting the locking screw on the connecting screw, thereby adjusting the distance between the two heads.

[0040] When the mechanism is working, the lifting cylinders (vertical moving structure 32) on the two screen printing heads are lowered at the same time, and then the locking screws are adjusted to adjust the scraper (first scraper 222 and second scraper 232) and ink knife (first ink knife 223 and second ink knife 233) to a suitable distance from the screen, and then the stepper motor drives the head to print. According to another aspect of the present application, a screen printing machine is also provided, and the screen printing machine includes the above-mentioned multi-head screen printing mechanism. This setting can realize that the screen printing machine is provided with a single screen printing structure, two screen printing structures or multiple screen printing structures, and can realize the movement of the screen printing structure in the horizontal direction, or in the vertical direction, or at the same time to meet the movement in the horizontal and vertical directions, and can also realize the height adjustment and operation direction of the scraper, ink knife and dust cleaning device, as well as the replacement of the tool head.

[0041] The difference between the technical solution of the second embodiment and the technical solution of the first embodiment is that the second head frame 231 is fixedly connected with the screw slider 313 and the horizontal slider on the horizontal slide rail, so as to realize the movement of the second screen printing structure 23 in the horizontal direction, and the first head frame 221 is only connected with the horizontal slider, and the first head frame 221 and the second head frame 231 are connected through the transmission part 21, so as to realize the sliding of the first screen printing structure 22 and the second screen printing structure 23 in the horizontal position. Such a setting meets the requirements of realizing different parts driving in the first embodiment, and can be selected according to the operation needs.

[0042] The difference between the technical solution of the third embodiment and the technical solution of the first embodiment is that the first head frame 221 and the second head frame 231 are respectively connected to the two screw sliders 313 and the horizontal slider, so that the simultaneous driving setting provides a stronger driving force and a stronger load capacity, so that the sliding of the first silk-screen structure 22 and the second silk-screen structure 23 in the horizontal direction is more stable. At this time, the transmission part 21 can achieve the requirement of controlling the horizontal distance between the first silk-screen structure 22 and the second silk-screen structure 23 through the first threaded rod segment and the second threaded rod segment.

[0043] So far, various embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed herein.

[0044] Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A multi-head screen printing mechanism, characterized in that: include: A base assembly (10); A multi-head silk screen assembly (20), the multi-head silk screen assembly (20) comprising a transmission part (21) and a plurality of silk screen structures, the transmission part (21) being connected to the plurality of silk screen structures; A moving component (30), wherein the moving component (30) is arranged on the base component (10), and the multi-head screen printing component (20) is installed on the moving component (30).

2. The multi-head screen printing mechanism according to claim 1, characterized in that: The plurality of silk-screen structures include a first silk-screen structure (22) and a second silk-screen structure (23); the first end of the transmission part (21) is connected to the first silk-screen structure (22); and the second end of the transmission part (21) is connected to the second silk-screen structure (23).

3. The multi-head screen printing mechanism according to claim 2, characterized in that: The first screen printing structure (22) comprises a first head frame (221), a first scraper (222) and a first ink knife (223), and the first scraper (222) and the first ink knife (223) are both mounted on the first head frame (221) so as to be movable up and down. The second screen printing structure (23) comprises a second head frame (231), a second scraper (232) and a second ink knife (233), and the second scraper (232) and the second ink knife (233) are both mounted on the second head frame (231) so as to be movable up and down. The transmission part (21) is connected to the first head frame (221) and the second head frame (231) by threads.

4. The multi-head screen printing mechanism according to claim 3, characterized in that: The transmission part (21) includes a first threaded rod segment, a connecting rod segment and a second threaded rod segment, the first head frame (221) has a first threaded hole, the second head frame (231) has a second threaded hole, the first threaded rod segment cooperates with the first threaded hole, the second threaded rod segment cooperates with the second threaded hole, and the thread of the first threaded rod segment and the thread of the second threaded rod segment have opposite rotation directions.

5. The multi-head screen printing mechanism according to any one of claims 2 to 4, characterized in that: The moving assembly (30) comprises a horizontal moving structure (31) and a vertical moving structure (32); the horizontal moving structure (31) is mounted on the base assembly (10); the vertical moving structure (32) is mounted on the horizontal moving structure (31); and the multi-head screen printing assembly (20) is mounted on the vertical moving structure (32).

6. The multi-head screen printing mechanism according to claim 5, characterized in that: The horizontal moving structure (31) comprises a horizontal driving part (311), a horizontal screw rod (312) and a screw rod slider (313); the horizontal driving part (311) is fixed on the base assembly (10); the horizontal screw rod (312) is connected to the output end of the horizontal driving part (311); the screw rod slider (313) cooperates with the horizontal screw rod (312); and the vertical moving structure (32) is connected to the screw rod slider (313).

7. The multi-head screen printing mechanism according to claim 6, characterized in that: The horizontal moving structure (31) further comprises a limit switch (314), and the limit switch (314) is arranged on the base assembly (10).

8. The multi-head screen printing mechanism according to claim 6, characterized in that: The vertical moving structure (32) and the base assembly (10) have mutually matching slide rail structures.

9. The multi-head screen printing mechanism according to claim 8, characterized in that: The vertical moving structure (32) comprises a first cylinder (321) and a second cylinder (322); the first silk-screen structure (22) is connected to the output end of the first cylinder (321); the second silk-screen structure (23) is connected to the output end of the second cylinder (322); the housing of the first cylinder (321) is connected to the screw slider (313); a first slide rail structure is provided between the first cylinder (321) and the base assembly (10); and a second slide rail structure is provided between the second cylinder (322) and the base assembly (10).

10. A screen printing machine, characterized in that: It comprises the multi-head screen printing mechanism described in any one of claims 1 to 9.

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