CN214606479U - Screen printer - Google Patents

Abstract

The utility model provides a silk screen printing machine. The silk screen printing machine includes: a frame; the scraping and printing mechanism comprises a scraper component arranged on the frame; the screen plate positioning mechanism is arranged on the rack, at least part of the screen plate positioning mechanism is positioned below the scraper component, and the scraping and printing mechanism is movably arranged along a first direction relative to the screen plate positioning mechanism; and the tooling fixing mechanism is arranged on the rack and is positioned below the screen plate positioning mechanism, and the scraping mechanism and/or the screen plate positioning mechanism can be arranged in a swinging manner in a vertical plane relative to the rack. The technical scheme of the utility model can increase the portable scope of otter board positioning mechanism in vertical side, conveniently treat that printed part installs to frock fixed establishment, improves the adaptability of silk screen printing machine.

Description

Screen printer

Technical Field

The utility model relates to a silk screen printing machine technical field particularly, relates to a silk screen printing machine.

Background

The silk-screen process is mainly to scrape the ink on the screen plate through an oil scraping plate so that the ink permeates through the pre-manufactured pattern screen plate, thereby forming a desired trademark or pattern on the surface of the part to be printed.

In a known screen printing machine, a motor drives a ball screw to drive a scraping and printing mechanism to move in a horizontal plane, and a screen plate positioning mechanism moves up and down between a tool fixing mechanism and the scraping and printing mechanism under the drive of an air cylinder; because frock fixed establishment and scraping printing mechanism are all not portable in vertical direction, consequently, the movable range of otter board positioning mechanism in vertical direction is very limited, receives the position restriction of scraping printing mechanism, and when treating the size of printing part great, it is difficult to install to between frock fixed establishment and the otter board positioning mechanism to treat the printing part, and the adaptability is lower.

Therefore, a screen printing machine is needed to be provided, the movement of the screen positioning mechanism in the vertical direction is no longer limited by the position of the scraping and printing mechanism, so that the movable range of the screen positioning mechanism in the vertical direction is enlarged, a printing part is conveniently mounted on the tool fixing mechanism, and the adaptability of the screen printing machine is improved.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a silk screen printing machine can increase otter board positioning mechanism at the ascending movable range of vertical side, conveniently waits to print the part and installs to frock fixed establishment, improves the adaptability of silk screen printing machine.

In order to achieve the above object, the utility model provides a screen printer, include: a frame; the scraping and printing mechanism comprises a scraper component arranged on the frame; the screen plate positioning mechanism is arranged on the rack, at least part of the screen plate positioning mechanism is positioned below the scraper component, and the scraping and printing mechanism is movably arranged along a first direction relative to the screen plate positioning mechanism; and the tooling fixing mechanism is arranged on the rack and is positioned below the screen plate positioning mechanism, and the scraping mechanism and/or the screen plate positioning mechanism can be arranged in a swinging manner in a vertical plane relative to the rack.

Further, the silk screen printing machine further comprises an adjusting mechanism, the adjusting mechanism comprises a mounting frame connected with the frame and a connecting rod pivotally connected with the mounting frame, the connecting rod is provided with a first end and a second end which are arranged oppositely, the first end of the connecting rod is connected with at least parts of the scraper component and the screen plate positioning mechanism, and when external force acts on the second end of the connecting rod, the connecting rod can be arranged in a swinging mode in a vertical plane relative to the mounting frame.

Further, the adjusting mechanism further comprises a first driving structure, the first driving structure is provided with a driving end and a telescopic end, one end of the driving end and the telescopic end of the first driving structure is in pivot connection with the mounting frame, and the other end of the driving end and the telescopic end of the first driving structure is in pivot connection with the second end of the connecting rod.

Further, the mounting frame is movably arranged in a vertical direction relative to the frame.

Further, the silk screen printing machine is still including setting up in the first adjustment mechanism of frame, and the mounting bracket passes through first adjustment mechanism to be connected with the frame, and first adjustment mechanism is used for adjusting the mounting bracket for the frame in the ascending position of vertical direction.

Furthermore, the first adjusting mechanism comprises a lead screw which is pivotally connected with the rack, and the lead screw is arranged on the mounting rack in a penetrating way and is in threaded fit with the mounting rack so as to drive the mounting rack to linearly move in the vertical direction; or the first adjusting mechanism comprises a guide structure for guiding the movement of the mounting frame, the guide structure comprises a guide post arranged on the mounting frame in a penetrating manner and a linear bearing arranged on the periphery of the guide post, and the mounting frame is connected with the linear bearing; or the first adjusting mechanism comprises a lead screw which is pivotally connected with the frame and a driving handle which is connected with the lead screw; or, the silk screen printing machine includes that a plurality of intervals set up in the first adjustment mechanism of frame.

Further, the silk screen printing machine further comprises a telescopic mechanism connected with the first end of the connecting rod, at least part of the telescopic mechanism is arranged telescopically relative to the connecting rod, and the scraping and printing mechanism is connected with the connecting rod through the telescopic mechanism.

Further, the telescopic mechanism comprises a rodless cylinder, the rodless cylinder comprises a first sliding block connected with the connecting rod and a guide rod capable of moving relative to the first sliding block, and the scraping and printing mechanism is connected with the guide rod.

Furthermore, the scraping and printing mechanism further comprises an oil return structure positioned on one side of the scraper assembly, and the oil return structure is connected with the connecting rod through a telescopic mechanism.

Further, frock fixed establishment includes the body and sets up in the mounting groove of body, and the mounting groove is used for the installation to wait to print the part.

Further, the screen printing machine further comprises a second adjusting mechanism arranged on the frame, the tool fixing mechanism is connected with the frame through the second adjusting mechanism, and the tool fixing mechanism is movably arranged in the horizontal plane relative to the frame under the driving of the second adjusting mechanism.

Further, the second adjusting mechanism comprises a first linear guide rail and a second driving structure in driving connection with at least part of the first linear guide rail, the tool fixing mechanism is connected with the first linear guide rail, and under the driving of the second driving structure, the tool fixing mechanism is movably arranged along the first direction relative to at least part of the first linear guide rail; or, the screen printer comprises a plurality of second adjusting mechanisms which are connected in sequence, the second adjusting mechanisms are arranged in sequence along the vertical direction, and the arrangement directions of the first linear guide rails of at least two second adjusting mechanisms in the second adjusting mechanisms are different.

By applying the technical scheme of the utility model, the tool fixing mechanism is arranged on the frame, the part to be printed is arranged on the tool fixing mechanism, and the screen plate positioning mechanism can swing in a vertical plane relative to the frame, so that the screen plate positioning mechanism can swing in the vertical plane relative to the tool fixing mechanism, and the screen plate positioning mechanism can move in the vertical direction relative to the tool fixing mechanism; and, because the scraping and printing mechanism can swing in the vertical plane relative to the frame, therefore, the movement of the screen positioning mechanism in the vertical direction is not limited by the position of the scraping and printing mechanism any more, thereby increasing the movable range of the screen positioning mechanism in the vertical direction, enlarging the operable space between the screen positioning mechanism and the tool fixing mechanism, enlarging the size of the part to be printed which can be accommodated between the screen positioning mechanism and the tool fixing mechanism, conveniently installing the part to be printed to the tool fixing mechanism, and improving the adaptability of the screen printing machine.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic perspective view of an embodiment of a screen printing machine according to the present invention;

FIG. 2 shows a schematic structural view of one direction of the screen printing machine of FIG. 1;

FIG. 3 shows a front view of the screen printing machine of FIG. 1;

FIG. 4 shows a side view of the screen printing machine of FIG. 1;

FIG. 5 shows a rear view of the screen printing machine of FIG. 1;

FIG. 6 is a schematic diagram of an adjustment mechanism of the screen printing machine of FIG. 1;

FIG. 7 is a schematic structural view illustrating one state of the adjustment mechanism of FIG. 6;

FIG. 8 is a schematic structural view showing another state of the adjustment mechanism of FIG. 6;

FIG. 9 is a schematic view of the connection between the telescoping mechanism and the scraper assembly of the screen printing machine of FIG. 1;

fig. 10 is a schematic structural diagram illustrating connection between a telescopic mechanism and an oil return structure of the screen printing machine of fig. 1;

FIG. 11 is a schematic diagram of a second adjustment mechanism of the screen printing machine of FIG. 1; and

fig. 12 shows an exploded schematic view of the second adjustment mechanism of fig. 11.

Wherein the figures include the following reference numerals:

10. a frame; 11. an avoidance groove; 20. a scraping and printing mechanism; 21. a scraper assembly; 211. a third drive structure; 212. a scraper plate; 30. a screen plate positioning mechanism; 31. a third support; 32. a screen plate; 33. a second adjustment knob; 40. a tool fixing mechanism; 41. A body; 42. mounting grooves; 50. an adjustment mechanism; 51. a mounting frame; 511. a first mounting plate; 512. a first bracket; 513. a second bracket; 52. a connecting rod; 521. a first pole segment; 522. a second pole segment; 523. a first connecting plate; 53. a first drive structure; 60. a first adjustment mechanism; 61. a lead screw; 62. a guide structure; 63. a guide post; 64. a drive handle; 65. a second connecting plate; 70. a telescoping mechanism; 71. a rodless cylinder; 72. a first slider; 73. a guide bar; 80. an oil return structure; 81. a fourth drive configuration; 82. an oil return knife; 90. a second adjustment mechanism; 91. a first linear guide rail; 92. a second drive structure; 93. a stopper; 94. a limiting plate; 95. mounting holes; 100. a second mounting plate; 110. a third connecting plate; 120. a second linear guide; 131. A fourth connecting plate; 132. a first adjustment knob.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present application, where the contrary is not intended, the use of directional words such as "upper, lower, top and bottom" is generally with respect to the orientation shown in the drawings, or with respect to the component itself in the vertical, perpendicular or gravitational direction; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

To because frock fixed establishment and scraping seal mechanism are all not portable in vertical side, consequently, otter board positioning mechanism is very limited at the ascending movable range of vertical side, the lower problem of adaptability of silk screen printing machine, the utility model discloses an embodiment provides a silk screen printing machine.

As shown in fig. 1 to 5, in an embodiment of the present invention, a screen printing machine includes a frame 10, a scraping mechanism 20, a screen positioning mechanism 30, and a tool fixing mechanism 40, where the scraping mechanism 20 includes a scraper assembly 21 disposed on the frame 10; the screen positioning mechanism 30 is arranged on the frame 10, at least part of the screen positioning mechanism 30 is positioned below the scraper component 21, and the scraping and printing mechanism 20 is movably arranged along a first direction relative to the screen positioning mechanism 30; the tool fixing mechanism 40 is arranged on the frame 10, the tool fixing mechanism 40 is located below the screen positioning mechanism 30, wherein both the scraping mechanism 20 and the screen positioning mechanism 30 are swingably arranged in a vertical plane relative to the frame 10.

In the above arrangement, the tool fixing mechanism 40 is arranged on the frame 10, the component to be printed is arranged on the tool fixing mechanism 40, and since the screen positioning mechanism 30 can swing in a vertical plane relative to the frame 10, the screen positioning mechanism 30 can swing in the vertical plane relative to the tool fixing mechanism 40, so that the screen positioning mechanism 30 can move in the vertical direction relative to the tool fixing mechanism 40; moreover, because the scraping and printing mechanism 20 can swing in a vertical plane relative to the frame 10, the movement of the screen positioning mechanism 30 in the vertical direction is not limited by the position of the scraping and printing mechanism 20, so that the movable range of the screen positioning mechanism 30 in the vertical direction is enlarged, the operable space between the screen positioning mechanism 30 and the tool fixing mechanism 40 is enlarged, the size of a component to be printed, which can be accommodated between the screen positioning mechanism 30 and the tool fixing mechanism 40, is enlarged, the component to be printed can be conveniently installed to the tool fixing mechanism, and the adaptability of the screen printing machine is improved.

Compared with the technology that both the screen positioning mechanism 30 and the scraping and printing mechanism 20 move linearly in the vertical direction relative to the tool fixing mechanism 40 (the linear movement belongs to rigid movement), the positions in the horizontal plane are single, and the adaptability and the flexibility are low, in the technical scheme of the application, both the scraping and printing mechanism 20 and the screen positioning mechanism 30 are arranged in the vertical plane in a swinging manner relative to the rack 10, so that the movement of the scraping and printing mechanism 20 and the screen positioning mechanism 30 in the vertical plane is curvilinear movement, the positions of the scraping and printing mechanism 20 and the screen positioning mechanism 30 in the first direction of the horizontal plane and the vertical direction can be quickly adjusted, the positions of the scraping and printing mechanism 20 and the screen positioning mechanism 30 in the horizontal direction and the vertical direction are more diverse and flexible, the screen positioning mechanism can be more suitable for the actual situation of a part to be printed, and the requirement of flexible production in the current manufacturing industry is met, the adaptability and the flexibility of the screen printing machine are improved.

Further, components such as a scraping mechanism 20, a screen positioning mechanism 30, a tool fixing mechanism 40 and the like of the screen printing machine are all arranged on the frame 10, and the frame 10 can play roles of connecting, installing and stably supporting the components.

Further, the part to be printed is disposed on the tool fixing mechanism 40, the tool fixing mechanism 40 is disposed below the screen positioning mechanism 30, the screen is disposed on the screen positioning mechanism 30, at least a portion of the screen positioning mechanism 30 is disposed below the scraper assembly 21, and the scraper assembly 21 is movably disposed relative to the screen positioning mechanism 30 along the first direction, so that when the scraper assembly 21 moves relative to the screen positioning mechanism 30 along the first direction, the scraper assembly 21 can scrape oil, so that the ink can seep through the screen to be printed on the surface of the part to be printed and form a desired trademark or pattern on the surface of the part to be printed.

Of course, in alternative embodiments not shown in the drawings of the present application, it is also possible to arrange only the squeegee mechanism 20 or only the screen positioning mechanism 30 so as to be pivotable in a vertical plane relative to the frame 10, as required.

Preferably, the screen printer includes an electrical control system for controlling the components of the screen printing machine, such as the scraping mechanism 20, the screen positioning mechanism 30, and the tool fixing mechanism 40, and the electrical control system is disposed in the cavity of the frame 10.

Preferably, the doctor assembly 21 is used for doctoring to print the part to be printed. It should be noted that, as the doctor assembly 21 in the present embodiment, an existing structure for realizing the oil scraping operation may be adopted.

Preferably, the screen positioning mechanism 30 is used to secure the screen for printing the part to be printed. It should be noted that an existing structure for fixing the screen may be adopted as the screen positioning mechanism 30 in the present embodiment.

As shown in fig. 1 and 3, in the embodiment of the present invention, the fixture fixing mechanism 40 includes a body 41 and a mounting groove 42 disposed on the body 41, and the mounting groove 42 is used for mounting a component to be printed. Partial structure of the part to be printed can be installed in the installation groove 42, so that the part to be printed is connected with the body 41, the purpose of installing the part to be printed to the tool fixing mechanism 40 is achieved, and the part to be printed is convenient to print.

Preferably, the mounting groove 42 is a "T" shaped groove, a part of the structure of the component to be printed can be matched with the "T" shaped groove to achieve the mounting purpose, and the "T" shaped groove can be used for conveniently mounting the component to be printed on the tool fixing mechanism 40.

Preferably, as shown in fig. 1, in the embodiment of the present invention, the mounting groove 42 extends along the first direction and is disposed on the body 41, so that the to-be-printed component can move relative to the body 41 along the length direction (i.e. the first direction) of the mounting groove 42, and the to-be-printed component is adjusted relative to the position of the tool fixing mechanism 40, so as to print the to-be-printed component. Of course, in an alternative embodiment not shown in the drawings of the present application, the mounting groove 42 may be extended along other directions to be disposed on the body 41 according to actual needs, for example, a direction forming an angle with the first direction. Preferably, the fixture fixing mechanism 40 further includes a limiting member for fixing and limiting the position of the component to be printed with respect to the body 41. Preferably, the limiting member can be a nut disposed in the mounting groove 42, in the embodiment of the present invention, the limiting member is a "T" nut disposed in the mounting groove 42, and the "T" nut can be fixed on a certain position of the mounting groove 42 by the locking member cooperating with the "T" nut, so as to fix and limit the position of the printing component relative to the body 41. Of course, in an alternative embodiment of the present application, the limiting member may be set to be a screw or the like according to actual needs, a limiting hole may be provided on the inner wall of the mounting groove 42, and the screw and the limiting hole cooperate to fix and limit the position of the to-be-printed component relative to the body 41, so as to achieve the purpose of mounting the to-be-printed component to the tool fixing mechanism 40, thereby facilitating printing of the to-be-printed component.

Specifically, the produced product tooling (namely, the part to be printed) is rapidly fixed and disassembled through the T-shaped groove and the T-shaped nut, and meanwhile, the translation along the first direction on the horizontal plane is realized.

As shown in fig. 1, 2, 4 to 8, in an embodiment of the present invention, the screen printing machine further includes an adjusting mechanism 50, the adjusting mechanism 50 includes a mounting frame 51 connected to the frame 10 and a connecting rod 52 pivotally connected to the mounting frame 51, the connecting rod 52 has a first end and a second end which are oppositely disposed, the first end of the connecting rod 52 is connected to at least a portion of the scraper assembly 21 and the screen positioning mechanism 30, and the connecting rod 52 is swingably disposed in a vertical plane with respect to the mounting frame 51 when an external force is applied to the second end of the connecting rod 52.

In the above arrangement, the purpose that both the scraping mechanism 20 and the screen positioning mechanism 30 can swing in the vertical plane relative to the frame 10 is achieved by the adjusting mechanism 50; the connecting rod 52 is connected with the frame 10 through a mounting frame 51, the frame 10 supports the adjusting mechanism 50, and the mounting frame 51 is connected with and stably supports the connecting rod 52; when an external force acts on the second end of the connecting rod 52, the first end of the connecting rod 52 swings around a pivot point between the connecting rod 52 and the mounting frame 51, so that the scraper assembly 21 and the screen plate positioning mechanism 30 are driven to swing together with the first end of the connecting rod 52, the purpose that both the scraping mechanism 20 and the screen plate positioning mechanism 30 can swing in a vertical plane relative to the frame 10 is further achieved, and the adaptability and flexibility of the screen printing machine can be improved.

Preferably, as shown in fig. 6, in an embodiment of the present invention, the connecting rod 52 includes a first rod segment 521 and two second rod segments 522 connected to the first rod segment 521, the two second rod segments 522 are disposed in parallel, the two second rod segments 522 are pivotally connected to the mounting frame 51, an end of the first rod segment 521 away from the two second rod segments 522 forms a second end of the connecting rod 52, and an end of the two second rod segments 522 away from the first rod segment 521 forms a first end of the connecting rod 52, that is, the two second rod segments 522 are connected to the scraping mechanism 20 and the screen positioning mechanism 30, and the two second rod segments 522 can improve the stability of the connecting rod 52 connected to the scraping mechanism 20 and the screen positioning mechanism 30; the pivotal connection between the link 52 and the mounting frame 51 is achieved by pivotally connecting both the second rod segments 522 to the mounting frame 51, so that the stability of the connection between the link 52 and the mounting frame 51 can be improved. Preferably, the link 52 further comprises a first link plate 523, the two second pole segments 522 being connected to the first pole segment 521 by the first link plate 523, the first link plate 523 being arranged to facilitate the connection of the two second pole segments 522 to the first pole segment 521. Of course, in an alternative embodiment not shown in the drawings of the present application, it is also possible to make the connecting rod 52 comprise one or at least three second rod segments 522 connected to the first rod segment 521, according to the actual needs.

Preferably, as shown in fig. 5 and 6, in the embodiment of the present invention, the mounting frame 51 includes a first mounting plate 511 and a first bracket 512 connected to the first mounting plate 511, and the link 52 is pivotally connected to the first bracket 512, so as to pivotally connect the link 52 to the mounting frame 51. Specifically, the first bracket 512 is a concave structure, and the two second rod segments 522 are pivotally connected to the first bracket 512.

As shown in fig. 1, 2, and 4 to 8, in an embodiment of the present invention, the adjusting mechanism 50 further includes a first driving structure 53, the first driving structure 53 has a driving end and a telescopic end, the driving end of the first driving structure 53 is pivotally connected to the mounting frame 51, and the telescopic end of the first driving structure 53 is pivotally connected to the second end of the connecting rod 52. The first drive structure 53 applies a force to the second end of the link 52 to rotate the link 52 about the pivot point between the link 52 and the mounting frame 51, such that the first end of the link 52 oscillates about the pivot point between the link 52 and the mounting frame 51, thereby causing the squeegee assembly 21 and the screen positioning mechanism 30 to oscillate with the first end of the link 52.

Further, mounting bracket 51 and link 52 are each pivotally connected to first drive structure 53, such that link 52 is driven by first drive structure 53 to rotate link 52 relative to mounting bracket 51.

Preferably, the first driving structure 53 may be a cylinder. Of course, in alternative embodiments of the present application, other driving structures may be used as the first driving structure 53 in the technical solution of the present application, such as an electric push rod, according to actual needs.

In a known screen printing machine, a motor drives a ball screw to drive an oil scraper mechanism to move, and a device for quickly adjusting the distance between a tool fixing mechanism and a screen positioning mechanism is not provided; the equipment of this silk screen printing machine debugs the degree of difficulty greatly, moves slower, and is efficient, and this silk screen printing machine equipment mechanism is complicated simultaneously, huge, and difficult removal can't satisfy the demand of present manufacturing flexible production. Compared with the prior art, according to the technical scheme, the air cylinder is adopted to drive the connecting rod to swing, the connecting rod drives the scraping and printing mechanism to swing in the vertical plane, the vertical movement in the vertical direction can be achieved, the running path of the equipment is optimized, the running efficiency of the silk screen printing machine equipment is greatly improved, and the debugging difficulty is reduced.

Preferably, as shown in fig. 5 and 6, in an embodiment of the present invention, the mounting frame 51 further includes a second bracket 513 connected to the first mounting plate 511, and the driving end of the first driving structure 53 is pivotally connected to the second bracket 513, so as to achieve the purpose of pivotally connecting the first driving structure 53 and the mounting frame 51, and facilitate driving the connecting rod 52 by the first driving structure 53. Preferably, the first bracket 512 and the second bracket 513 are respectively located at two opposite sides of the first mounting plate 511, so that the interference can be avoided, and the connecting rod 52 can be ensured to rotate smoothly relative to the mounting frame 51. Preferably, as shown in fig. 2 and 5, in the embodiment of the present invention, the frame 10 is provided with an avoiding groove 11, the second support 513 is located in the avoiding groove 11, the avoiding groove 11 is disposed to avoid the collision between the second support 513 and the frame 10, the interference is avoided, and the smooth operation of the screen printing machine is ensured.

Of course, in an alternative embodiment not shown in the drawings of the present application, the telescopic end of the first driving structure 53 may be pivotally connected to the mounting frame 51, and the driving end of the first driving structure 53 may be pivotally connected to the second end of the connecting rod 52, according to actual requirements.

In the embodiment of the present invention, the mounting frame 51 is movably disposed in the vertical direction with respect to the frame 10. The connecting rod 52 and the first driving structure 53 are both connected with the mounting frame 51, the mounting frame 51 is movable in the vertical direction relative to the frame 10, the connecting rod 52 and the first driving structure 53 are movable in the vertical direction relative to the frame 10 together with the mounting frame 51, and the scraping mechanism 20 and the screen positioning mechanism 30 are both movable in the vertical direction relative to the frame 10 under the driving of the connecting rod 52, that is, the scraping mechanism 20 and the screen positioning mechanism 30 are both movable in the vertical direction relative to the tool fixing mechanism 40, so that the distance between the screen positioning mechanism 30 and the tool fixing mechanism 40 can be adjusted, a component to be printed is conveniently mounted, and the adaptability of the screen printing machine is improved.

Specifically, the swing bracket is connected to the second bracket 513, the first driving structure 53 is hinged to the swing bracket through a first rotating shaft, the floating joint is disposed at the second end of the connecting rod 52, the first driving structure 53 is hinged to the floating joint through a second rotating shaft, the connecting rod 52 is hinged to the first driving structure 53 through a second rotating shaft, and the connecting rod 52 is hinged to the mounting frame 51 through a fixed shaft. The swing structure driven by the first driving structure 53 (preferably, the first driving structure 53 is a cylinder) is integrally formed. When receiving the motion signal, the first driving structure 53 drives the connecting rod 52 to swing up and down, i.e. in a vertical plane, around the central axis of the fixed shaft.

As shown in fig. 1 to 5, in the embodiment of the present invention, the screen printing machine further includes a first adjusting mechanism 60 disposed on the frame 10, the mounting frame 51 is connected to the frame 10 through the first adjusting mechanism 60, and the first adjusting mechanism 60 is used for adjusting the position of the mounting frame 51 in the vertical direction relative to the frame 10. The purpose of the mounting bracket 51 being movable in the vertical direction with respect to the frame 10 is achieved by the first adjustment mechanism 60, so that the position of the mounting bracket 51 in the vertical direction with respect to the frame 10 is adjusted.

Specifically, the first mounting plate 511 of the mounting bracket 51 is connected to the frame 10 through the first adjustment mechanism 60.

Preferably, as shown in fig. 1, 2 and 4, in an embodiment of the present invention, the first adjusting mechanism 60 includes a lead screw 61 pivotally connected to the frame 10, and the lead screw 61 is disposed on the mounting frame 51 and threadedly engaged with the mounting frame 51 to drive the mounting frame 51 to linearly move in the vertical direction. The lead screw 61 is pivotally connected to the frame 10, the lead screw 61 is rotatable relative to the frame 10, and since the lead screw 61 is in threaded engagement with the mounting bracket 51, the rotational movement of the lead screw 61 can be converted into linear movement of the mounting bracket 51, thereby achieving the purpose of linear movement of the mounting bracket 51 in the vertical direction relative to the frame 10.

Specifically, in the embodiment of the present invention, the first mounting plate 511 of the mounting frame 51 is in threaded fit with the screw 61, the first mounting plate 511 is provided with a first through hole, the screw 61 is inserted into the first through hole, and the inner wall surface of the first through hole has an inner thread adapted to the outer wall surface of the screw 61, so as to realize the threaded fit between the first mounting plate 511 and the screw 61. Of course, in an alternative embodiment of the present application, it is also possible that the first adjusting mechanism 60 further includes a nut in threaded engagement with the screw 61, the nut is disposed in the first through hole of the first mounting plate 511 and is connected with the first mounting plate 511, and the first mounting plate 511 is in threaded engagement with the screw 61 through the nut, according to actual needs.

Preferably, as shown in fig. 1 to 5, in an embodiment of the present invention, the first adjusting mechanism 60 further includes a guiding structure 62 for guiding the movement of the mounting frame 51, the guiding structure 62 includes a guiding post 63 penetrating the mounting frame 51 and a linear bearing disposed at the periphery of the guiding post 63, and the mounting frame 51 is connected to the linear bearing. The guide structure 62 is used for guiding the movement of the mounting frame 51 relative to the frame 10; specifically, the mounting bracket 51 moves along the central axis direction of the guide post 63, so that the mounting bracket 51 can be prevented from being offset in the process of moving relative to the rack 10; the mounting frame 51 is connected with the guide post 63 through the linear bearing and moves relative to the guide post 63, the mounting frame 51 can move relative to the guide post 63 more smoothly through the arrangement of the linear bearing, the movement resistance is reduced, and the movement efficiency is higher.

Specifically, in the embodiment of the present invention, the first mounting plate 511 of the mounting frame 51 is provided with a second through hole, the linear bearing is disposed in the second through hole of the first mounting plate 511 and connected to the first mounting plate 511, and the guiding post 63 is inserted into the second through hole of the first mounting plate 511 and connected to the first mounting plate 511 through the linear bearing, so as to achieve the purpose of guiding the movement of the mounting frame 51 by the guiding structure 62.

Of course, in an alternative embodiment of the present application, according to actual needs, the guide structure 62 only includes the guide post 63 disposed on the mounting frame 51, and does not include the linear bearing disposed on the periphery of the guide post 63, and the guide post 63 may be directly disposed in the second through hole of the first mounting plate 511, so that the guide structure 62 can also guide the movement of the mounting frame 51.

Preferably, as shown in fig. 1, 2 and 4, in an embodiment of the present invention, the first adjusting mechanism 60 includes two guiding pillars 63, the two guiding pillars 63 are respectively disposed on two sides of the screw 61, and the two guiding pillars 63 are disposed to guide the mounting frame 51 more accurately. Of course, in an alternative embodiment not shown in the drawings of the present application, it is also possible to make the first adjustment mechanism 60 comprise one or at least three guide posts 63 arranged at intervals, according to the actual needs.

Preferably, the linear bearings are provided in one-to-one correspondence with the guide posts 63.

As shown in fig. 1 to 3 and 5, in the embodiment of the present invention, the first adjusting mechanism 60 further includes a driving handle 64 connected to the lead screw 61. By applying an external force to the driving handle 64, the driving handle 64 rotates the lead screw 61, thereby moving the mounting bracket 51 relative to the frame 10. The embodiment of the utility model provides an in, can make actuating handle 64 drive lead screw 61 and rotate through manually operation actuating handle 64. Of course, in alternative embodiments of the present application, the lead screw 61 may also be driven by an electric or pneumatic cylinder or hydraulic driving structure to rotate the lead screw 61 according to actual requirements.

Preferably, as shown in fig. 1 to fig. 3 and fig. 5, in an embodiment of the present invention, the first adjusting mechanism 60 further includes a second connecting plate 65, the lead screw 61 is disposed on the second connecting plate 65 and rotatably disposed relative to the second connecting plate 65, the driving handle 64 is connected to one end of the lead screw 61 penetrating out of the second connecting plate 65, so as to operate the driving handle 64, thereby driving the lead screw 61 to rotate, the guiding structure 62 is connected to the second connecting plate 65, specifically, two guiding pillars 63 are both connected to the second connecting plate 65, and the fixed guiding pillars 63 can be connected, thereby improving the stability of the first adjusting mechanism 60.

Specifically, the driving handle 64 is screwed to drive the screw 61 to drive the mounting frame 51 to move in the vertical direction, so that the height position and the angle position of the mounting frame 51 and the screen plate are corrected.

Preferably, as shown in fig. 1 to 3 and 5, in an embodiment of the present invention, the screen printing machine includes two first adjusting mechanisms 60 disposed at intervals on the frame 10. The two first adjusting mechanisms 60 work together to adjust the position of the mounting frame 51 in the vertical direction relative to the rack 10, so that the moving stability of the mounting frame 51 is improved. Of course, in an alternative embodiment not shown in the drawings of the present application, it is also possible to make the screen printing machine include one or at least three first adjusting mechanisms 60 spaced apart from each other on the frame 10, according to actual needs.

Preferably, as shown in fig. 1 to 3, in an embodiment of the present invention, the screen printing machine further includes a second mounting plate 100 disposed on the frame 10, and the first adjusting mechanism 60 is connected to the frame 10 through the second mounting plate 100. Specifically, the guide structure 62 of the first adjusting mechanism 60 is disposed on the second mounting plate 100, the lead screw 61 is pivotally connected to the second mounting plate 100, the guide structure 62 and the lead screw 61 are both connected to the rack 10 through the second mounting plate 100, and the second mounting plate 100 is disposed to conveniently mount the first adjusting mechanism 60 to the rack 10, so that the integrity and stability of the first adjusting mechanism 60 are improved. Preferably, as shown in fig. 1 to 3, in the embodiment of the present invention, two first adjusting mechanisms 60 are disposed on the second mounting plate 100, and the two first adjusting mechanisms 60 are connected to the frame 10 through the second mounting plate 100.

As shown in fig. 1, fig. 2, fig. 4, fig. 5, fig. 9 and fig. 10, in an embodiment of the present invention, the screen printing machine further includes a telescopic mechanism 70 connected to the first end of the connecting rod 52, at least a portion of the telescopic mechanism 70 is telescopically arranged with respect to the connecting rod 52, and the scraping mechanism 20 is connected to the connecting rod 52 through the telescopic mechanism 70. When the first end of the connecting rod 52 swings relative to the frame 10, the telescopic mechanism 70 and the scraping and printing mechanism 20 can be driven to swing together with the first end of the connecting rod 52, so that the aim that the scraping and printing mechanism 20 can swing relative to the frame 10 is fulfilled; because at least part of the telescopic mechanism 70 is telescopic relative to the connecting rod 52, the scraping mechanism 20 can move relative to the connecting rod 52 under the driving of the telescopic mechanism 70, so that the scraper component 21 of the scraping mechanism 20 can carry out oil scraping action, and the printing purpose is realized.

As shown in fig. 1, 2, 4, 9 and 10, in an embodiment of the present invention, the telescoping mechanism 70 includes a rodless cylinder 71, the rodless cylinder 71 includes a first slider 72 connected to the connecting rod 52 and a guide rod 73 movable relative to the first slider 72, and the scraping mechanism 20 is connected to the guide rod 73. The driving part of the rodless cylinder is arranged in the first slider 72, and the driving part drives the guide rod 73 to enable the guide rod 73 to move relative to the first slider 72, so that the scraping and printing mechanism 20 is driven to move relative to the first slider 72 (namely relative to the connecting rod 52), and the scraper assembly 21 of the scraping and printing mechanism 20 can scrape oil, so that the printing purpose is realized; the first slider 72 is connected to the connecting rod 52, so that a part of the telescopic mechanism 70 is fixed on the connecting rod 52, and the guide rod 73 can be ensured to stably extend or retract, thereby ensuring that the scraper assembly 21 of the scraping and printing mechanism 20 can stably perform an oil scraping action, and ensuring the printing quality.

Of course, in an alternative embodiment not shown in the drawings of the present application, other telescopic structures may be adopted as the telescopic mechanism 70 in the technical solution of the present application according to actual needs, for example, an electric push rod or an air cylinder.

As shown in fig. 1 and 10, in the embodiment of the present invention, the scraping mechanism 20 further includes an oil return structure 80 located on one side of the scraper assembly 21, and the oil return structure 80 is connected to the connecting rod 52 through the telescopic mechanism 70. The oil return structure 80 is used for collecting the ink scattered on the screen plate, spreading the oil and preparing for subsequent oil scraping. Driven by the telescopic mechanism 70, the oil return structure 80 and the scraper assembly 21 are both movable relative to the connecting rod 52, so that oil scraping and oil return actions can be realized.

For solving the problem that printing ink scatters among the printing process, the utility model discloses an in the embodiment, withdraw printing ink that scatters through setting up oil return structure 80 to the printing, guarantee all the time that printing ink stays in needs printing position.

Preferably, as shown in fig. 1, 4, 9 and 10, in an embodiment of the present invention, the screen printing machine further includes a third connecting plate 110 disposed between the scraping mechanism 20 and the telescoping mechanism 70, and the scraping mechanism 20 is connected to the guide rod 73 of the telescoping mechanism 70 through the third connecting plate 110.

Preferably, as shown in fig. 1, 9 and 10, in an embodiment of the present invention, the scraper assembly 21 and the oil return structure 80 are respectively located at two opposite sides of the third connecting plate 110, the scraper assembly 21 is disposed at a side of the third connecting plate 110 away from the telescopic mechanism 70, and the oil return structure 80 is disposed at a side of the third connecting plate 110 close to the telescopic mechanism 70. When the guide rod 73 of the telescopic mechanism 70 extends out, the guide rod 73 drives the scraper component 21 and the oil return structure 80 to move to one side far away from the first sliding block 72 and the connecting rod 52, and at the moment, the scraper component 21 performs oil scraping action to achieve the purpose of printing; when the guide rod 73 of the telescopic mechanism 70 retracts, the guide rod 73 drives the scraper assembly 21 and the oil return structure 80 to move to a side close to the first sliding block 72 and the connecting rod 52, and at this time, the oil return structure 80 performs an oil return action to achieve an oil return purpose.

Specifically, as shown in fig. 3, 4 and 9, in an embodiment of the present invention, the scraper assembly 21 includes a third driving structure 211 connected to the third connecting plate 110 and a scraper plate 212 drivingly connected to the third driving structure 211, and the scraper plate 212 is driven by the third driving structure 211 to move toward a direction close to or away from the screen positioning mechanism 30, so as to adjust a distance between the scraper plate 212 and the screen positioning mechanism 30.

Preferably, the third driving structure 211 may be an air cylinder, and of course, the third driving structure 211 may also be other driving structures that can extend and contract to drive the oil scraping plate 212 to move, for example, an electric push rod.

Preferably, as shown in fig. 1, fig. 3, fig. 4 and fig. 9, in an embodiment of the present invention, the screen printer further includes a second linear guide 120 disposed on one side of the third connecting plate 110 connected to the scraper assembly 21, a guide rail of the second linear guide 120 is connected to the third connecting plate 110, a slider of the second linear guide 120 is disposed between the third driving structure 211 and the scraper 212, the scraper 212 is connected to the third driving structure 211 through the slider of the second linear guide 120, and the second linear guide 120 can guide the movement of the scraper 212. Preferably, in an embodiment of the present invention, the guide rail of the second linear guide 120 is integrally formed with the third connecting plate 110. Of course, in an alternative embodiment of the present application, the guide rail of the second linear guide 120 may be provided separately from the third connecting plate 110 according to actual needs.

Preferably, as shown in fig. 1, 3, 4 and 9, in an embodiment of the present invention, the third driving structure 211 is connected with the guide rail of the second linear guide 120 and movably disposed with respect to the guide rail of the second linear guide 120. Preferably, as shown in fig. 1 to 4 and 9, in an embodiment of the present invention, the screen printing machine further includes a fourth connecting plate 131 connected to the third connecting plate 110 and a first adjusting knob 132 disposed on the fourth connecting plate 131 in a penetrating manner, the first adjusting knob 132 is movably disposed relative to the fourth connecting plate 131, one end of the first adjusting knob 132 is pivotally connected to the third driving structure 211, and the third driving structure 211 can be driven to move relative to the guide rail of the second linear guide 120 by screwing the first adjusting knob 132, so as to achieve fine adjustment of the distance between the oil scraping plate 212 and the screen plate positioning mechanism 30. Preferably, an external thread is arranged on the outer wall surface of the first adjusting knob 132, a third through hole is arranged on the fourth connecting plate 131, an internal thread matched with the external thread on the first adjusting knob 132 is arranged on the inner wall surface of the third through hole, and the first adjusting knob 132 is in threaded connection with the fourth connecting plate 131.

Preferably, in the embodiment of the present invention, the oil scraping plate 212 is connected to the sliding block of the second linear guide 120 through a connecting shaft and is locked by a locking member (e.g., a screw). The oil scraping plate 212 can rotate around the central axis of the connecting shaft relative to the sliding block of the second linear guide rail 120, and after the oil scraping plate is rotated to a required position, the oil scraping plate is locked through the locking piece, so that the purpose of adjusting the angle of the oil scraping plate 212 relative to the sliding block of the second linear guide rail 120 is achieved.

Specifically, the first slider 72 of the rodless cylinder 71 is fixed to the first end of the connecting rod 52, the guide rod 73 of the rodless cylinder 71 pushes the third connecting plate 110 to move forward, and when the third driving structure 211 receives a signal, the third driving structure 211 extends out to drive the slider of the second linear guide rail 120 to move downward, so as to push the oil scraping plate 212 downward, and after the oil scraping action is completed, the third driving structure 211 retracts. The vertical adjustment of the oil scraping plate 212 is possible by the first adjustment knob 132. The oil scraping plate 212 is fixed with the sliding blocks of the second linear guide rail 120 through the connecting shafts, the locking pieces are loosened, and the inclination angle of the sliding blocks of the oil scraping plate 212 and the second linear guide rail 120 can be adjusted, so that the ink pattern scraping effect can be better and faster realized.

Specifically, as shown in fig. 10, in the embodiment of the present invention, the oil return structure 80 includes a fourth driving structure 81 connected to the third connecting plate 110 and an oil return knife 82 drivingly connected to the fourth driving structure 81, and under the driving of the fourth driving structure 81, the oil return knife 82 can move toward a direction close to or away from the screen plate positioning mechanism 30, so as to adjust the distance between the oil return knife 82 and the screen plate positioning mechanism 30.

Preferably, the fourth driving structure 81 may be an air cylinder, and of course, the fourth driving structure 81 may also be other driving structures that can extend and contract to drive the oil return knife 82 to move, for example, an electric push rod.

Specifically, the oil return knife 82 is fixed on the fourth driving structure 81, and when the fourth driving structure 81 receives a signal and extends out, the oil return knife 82 moves downward, at this time, the first slider 72 of the rodless cylinder 71 is fixed on the first end of the connecting rod 52, and the guide rod 73 of the rodless cylinder 71 moves forward, so that the oil return knife 82 is pushed to move horizontally on the screen plate, the ink scattered on the screen plate is collected, the oil is spread, and preparation is made for scraping oil at the back.

The structure for correcting the height and the angle of the vertical surface of the screen plate is added at the screen plate positioning mechanism 30, the position of the screen plate can be corrected in the vertical direction and the angle can be adjusted within a certain range, and the product with the cambered surface can be quickly debugged.

Specifically, as shown in fig. 4, in an embodiment of the present invention, the screen plate positioning mechanism 30 includes a third bracket 31 connected to the first end of the connecting rod 52 and a second adjusting knob 33 pivotally connected to the third bracket 31, the screen plate 32 (the screen plate includes a frame and a screen connected to the frame, preferably, the screen may be a steel screen) is disposed on the third bracket 31 and locked to the third bracket 31 by the second adjusting knob 33, the screen is disposed on the frame of the screen plate 32, and the frame of the screen plate 32 supports the screen for printing.

The second adjusting knob 33 is in threaded fit with the third support 31, the second adjusting knob 33 can move relative to the third support 31, the second adjusting knob 33 is screwed, the rotating motion of the second adjusting knob 33 relative to the third support 31 is converted into the motion of the second adjusting knob 33 relative to the third support 31, one end of the second adjusting knob 33 is abutted to the screen plate 32, the screen plate 32 is locked on the third support 31, and therefore the purpose of fixing the screen plate 32 is achieved.

When the screen plate 32 is mounted to the third bracket 31, the height and the angle of the screen plate 32 in the horizontal plane with respect to the third bracket 31 can be adjusted to a suitable position according to actual needs, and then the screen plate 32 is locked to the third bracket 31 by the second adjusting knob 33, so as to correct the position and adjust a certain angle range of the screen plate 32.

Specifically, the second adjusting knob 33 is unscrewed from the screen plate 32 by screwing the second adjusting knob 33, the screen plate 32 can be adjusted in height and angle of a vertical plane in the third support 31, and then the screen plate 32 is locked on the third support 31 through the second adjusting knob 33, so that the position correction and the adjustment within a certain angle range of the screen plate in the vertical direction are realized, and the rapid debugging of arc-surface products is met.

Aiming at the problem of difficult screen plate alignment, the second adjusting mechanism 90 is added at the bottom of the tool fixing mechanism 40, so that the tool (namely, the part to be printed) can be adjusted in any direction in the horizontal direction.

As shown in fig. 1, fig. 3, fig. 4, fig. 11 and fig. 12, in the embodiment of the present invention, the screen printer further includes a second adjusting mechanism 90 disposed on the frame 10, the tool fixing mechanism 40 is connected to the frame 10 through the second adjusting mechanism 90, and under the driving of the second adjusting mechanism 90, the tool fixing mechanism 40 is movably disposed in the horizontal plane relative to the frame 10.

In the above arrangement, the second adjusting mechanism 90 is used for adjusting the position of the tool fixing mechanism 40 in the horizontal plane relative to the frame 10, so as to adjust the position of the component to be printed, which is mounted on the tool fixing mechanism 40, in the horizontal plane, so as to print the component to be printed.

As shown in fig. 11 and 12, in an embodiment of the present invention, the second adjusting mechanism 90 includes a first linear guide 91 and a second driving structure 92 drivingly connected to at least a portion of the first linear guide 91, the tool fixing mechanism 40 is connected to the first linear guide 91, and the tool fixing mechanism 40 is movably disposed along the first direction relative to at least a portion of the first linear guide 91 under the driving of the second driving structure 92.

In the above arrangement, the tool fixing mechanism 40 is connected to the slider of the first linear guide rail 91, the tool fixing mechanism 40 is connected to the guide rail of the first linear guide rail 91 through the slider of the first linear guide rail 91, and the tool fixing mechanism 40 can move along the guide rail of the first linear guide rail 91, so as to drive the component to be printed to move, and further adjust the position of the component to be printed, which is mounted on the tool fixing mechanism 40, in the horizontal plane, so as to print the component to be printed.

Preferably, as shown in fig. 11 and 12, in an embodiment of the present invention, the second driving structure 92 is connected to the guide rail of the first linear guide 91, and at least a portion of the second driving structure 92 is disposed movably relative to the guide rail of the first linear guide 91, one end of the second driving structure 92 abuts against the slider of the first linear guide 91, and at least a portion of the second driving structure 92 moves relative to the guide rail of the first linear guide 91 to push the slider of the first linear guide 91 to move, so as to drive the component to be printed to move in the horizontal plane.

Preferably, a stopper 93 is disposed on the slider of the first linear guide 91, and one end of the second driving structure 92 abuts against the stopper 93, so that when at least a portion of the second driving structure 92 moves relative to the guide rail of the first linear guide 91, the slider of the first linear guide 91 can be pushed to move, thereby driving the to-be-printed component to move in the horizontal plane.

Preferably, the second driving structure 92 may be a threaded rod in threaded engagement with the guide rail of the first linear guide 91, and by screwing the threaded rod, one end of the second driving structure 92 may push the slider of the first linear guide 91 to move, so as to drive the component to be printed to move in the horizontal plane. Of course, the second driving structure 92 may be other structures that can achieve the driving function, such as an air cylinder or an electric push rod.

The embodiment of the utility model provides an in, adopt cylinder driven mode to drive each mechanism motion, reduce debugging and maintenance degree of difficulty coefficient, cylinder drive debugs and convenient maintenance more easily, can solve the problem that motor drive control debugging and abnormal maintenance degree of difficulty coefficient are high. Preferably, a mounting hole 95 is formed in the slider of the first linear guide rail 91, and the tool fixing mechanism 40 is connected with the first linear guide rail 91 through the mounting hole 95; for example, the connection of the tool fixing mechanism 40 to the first linear guide 91 may be achieved by the locking member engaging the mounting hole 95.

Preferably, the second adjusting mechanism 90 further includes a limiting plate 94 connected to the rail of the first linear guide 91, the limiting plate 94 is provided with a fourth through hole, so that a locking member (e.g., a screw) can pass through the fourth through hole and then be connected to the slider of the first linear guide 91, and the position between the slider of the first linear guide 91 and the rail of the first linear guide 91 is fixed, so as to limit the position of the slider of the first linear guide 91 relative to the rail of the first linear guide 91. Preferably, the fourth through hole is a long hole having the same extending direction as the guide rail of the first linear guide 91, and can accommodate a relative position change between the slider of the first linear guide 91 and the guide rail of the first linear guide 91, so as to define a position of the slider of the first linear guide 91 relative to the guide rail of the first linear guide 91.

As shown in fig. 1, fig. 3, fig. 4, fig. 11 and fig. 12, in the embodiment of the present invention, the screen printer includes two second adjusting mechanisms 90 connected in sequence, the two second adjusting mechanisms 90 are set in sequence along the vertical direction, and the setting direction of the first linear guide 91 of the two second adjusting mechanisms 90 is different. The two second adjusting mechanisms 90 are sequentially arranged along the vertical direction, the tool fixing mechanism 40 is connected with one second adjusting mechanism 90 which is positioned above the two second adjusting mechanisms 90, and the tool fixing mechanism 40 is connected with the rack 10 sequentially through the two second adjusting mechanisms 90; because the setting directions of the first linear guide rails 91 of the two second adjusting mechanisms 90 are different, the two second adjusting mechanisms 90 can adjust the positions of the tool fixing mechanism 40 in the two directions in the horizontal plane, so that the positions of the parts to be printed in the two directions in the horizontal plane are adjusted, and the parts to be printed are convenient to print.

Specifically, the tool fixing mechanism 40 is fixed in front of and above the second adjusting mechanism 90 located above through the mounting hole 95, and the second driving structure 92 of the second adjusting mechanism 90 located above is screwed to drive the slider of the first linear guide rail 91 to slide along the second direction, so that the whole upper mechanism (including the slider of the first linear guide rail 91, the tool fixing mechanism 40 and the component to be printed, which is mounted on the tool fixing mechanism 40) is displaced along the second direction in the guide rail of the first linear guide rail 91; the second driving structure 92 of the second adjusting mechanism 90 located below is screwed to drive the slider of the first linear guide rail 91, so that the whole upper mechanism (including the slider of the first linear guide rail 91 of the second adjusting mechanism 90 located below, the second adjusting mechanism 90 located above, the tool fixing mechanism 40 and the part to be printed, which is mounted on the tool fixing mechanism 40) is displaced in the guide rail of the first linear guide rail 91 along the first direction. The second adjusting mechanism 90 enables the tool fixing mechanism 40 and the component to be printed, which is mounted on the tool fixing mechanism 40, to move freely in the horizontal direction, so that the position of the product in the horizontal direction can be corrected.

Of course, in an alternative embodiment not shown in the drawings of the present application, the screen printing machine may further include one or at least three second adjusting mechanisms 90 sequentially arranged and connected in the vertical direction according to actual needs, wherein the arrangement directions of the first linear guide rails 91 of at least two second adjusting mechanisms 90 in the plurality of second adjusting mechanisms 90 are different, so as to adjust the positions of the tool fixing mechanism 40 in at least two directions in the horizontal plane.

The technical scheme of this application has following beneficial effect: the adjustment mechanism 50 drives the scraping mechanism 20 to move vertically, the third driving mechanism 211 drives the oil scraping plate 212 to scrape the screen, and the oil return structure 80 collects the scattered ink. The embodiment of the utility model provides an in, above-mentioned all actions are whole to be accomplished by cylinder drive, and its mechanism is simple, and the processing cost of manufacture is low. The screen printer equipment is designed in a miniaturized mode, and can be rapidly moved and switched with a production machine tool according to production orders, so that the flexible production requirement is met.

The technical scheme of the application has the following operation process:

1. the workpiece to be printed is placed on the tool fixing mechanism 40 and locked, the tool fixing mechanism 40 is arranged on the second adjusting mechanism 90 in a threaded connection mode, and the front, back, left and right positions of the workpiece to be printed in the horizontal plane are adjusted through the second adjusting mechanism 90, so that the workpiece to be printed is located at the position corresponding to the screen plate 32 in the screen plate positioning mechanism 30;

2. adjusting the first adjusting mechanism 60 to enable the screen plate in the screen plate positioning mechanism 30 to be in contact with a workpiece to be printed, and placing silk-screen printing ink on the screen;

3. starting the screen printing machine, wherein the third driving structure 211 of the scraper assembly 21 extends out of the sliding block driving the second linear guide rail 120 to move downwards, the oil scraping plate 212 is pushed downwards, and the guide rod 73 of the rodless cylinder 71 moves forwards to complete oil scraping;

4. after the oil scraping action is finished, the third driving structure 211 of the scraper assembly 21 retracts, the fourth driving structure 81 of the oil return structure 80 extends, the oil return knife 82 is driven to move downwards, and the guide rod 73 of the rodless cylinder 71 moves backwards, so that oil return is finished;

5. the first driving structure 53 of the adjusting mechanism 50 retracts to drive the screen positioning mechanism 30 and the scraping and printing mechanism 20 fixed on the first end of the connecting rod 52 of the adjusting mechanism 50 to swing upwards by a certain angle, so that the workpiece to be printed is separated from the screen;

6. and taking out the workpiece to be printed, and finishing the whole silk-screen printing process.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the tool fixing mechanism is arranged on the rack, the part to be printed is arranged on the tool fixing mechanism, and the screen plate positioning mechanism can swing in a vertical plane relative to the rack, so that the screen plate positioning mechanism can swing in the vertical plane relative to the tool fixing mechanism, and the screen plate positioning mechanism can move in the vertical direction relative to the tool fixing mechanism; and, because the scraping and printing mechanism can swing in the vertical plane relative to the frame, therefore, the movement of the screen positioning mechanism in the vertical direction is not limited by the position of the scraping and printing mechanism any more, thereby increasing the movable range of the screen positioning mechanism in the vertical direction, enlarging the operable space between the screen positioning mechanism and the tool fixing mechanism, enlarging the size of the part to be printed which can be accommodated between the screen positioning mechanism and the tool fixing mechanism, conveniently installing the part to be printed to the tool fixing mechanism, and improving the adaptability of the screen printing machine.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. A screen printing machine, characterized by comprising:

a frame (10);

the scraping and printing mechanism (20) comprises a scraper component (21) arranged on the frame (10);

the screen plate positioning mechanism (30) is arranged on the machine frame (10), at least part of the screen plate positioning mechanism (30) is positioned below the scraper component (21), and the scraping mechanism (20) is movably arranged along a first direction relative to the screen plate positioning mechanism (30);

the tooling fixing mechanism (40) is arranged on the rack (10), the tooling fixing mechanism (40) is positioned below the screen plate positioning mechanism (30), and the scraping mechanism (20) and/or the screen plate positioning mechanism (30) are/is arranged in a swinging mode in a vertical plane relative to the rack (10).

2. A screen printing machine according to claim 1, characterized in that the screen printing machine further comprises an adjustment mechanism (50), the adjustment mechanism (50) comprising a mounting frame (51) connected to the frame (10) and a link (52) pivotally connected to the mounting frame (51), the link (52) having a first end and a second end arranged opposite each other, the first end of the link (52) being connected to at least part of both the squeegee assembly (21) and the screen positioning mechanism (30), the link (52) being swingably arranged in a vertical plane with respect to the mounting frame (51) when an external force is applied to the second end of the link (52).

3. The screen printing machine according to claim 2, wherein the adjustment mechanism (50) further comprises a first drive structure (53), the first drive structure (53) having a drive end and a telescopic end, one of the drive end and the telescopic end of the first drive structure (53) being pivotally connected to the mounting frame (51), the other of the drive end and the telescopic end of the first drive structure (53) being pivotally connected to the second end of the connecting rod (52).

4. A screen printing machine according to claim 2, characterized in that the mounting frame (51) is arranged movable in the vertical direction with respect to the frame (10).

5. The screen printing machine according to claim 4, further comprising a first adjusting mechanism (60) disposed on the frame (10), wherein the mounting frame (51) is connected to the frame (10) through the first adjusting mechanism (60), and the first adjusting mechanism (60) is used for adjusting the position of the mounting frame (51) in the vertical direction relative to the frame (10).

6. The screen printing machine of claim 5,

the first adjusting mechanism (60) comprises a lead screw (61) which is pivotally connected with the rack (10), and the lead screw (61) is arranged on the mounting rack (51) in a penetrating way and is in threaded fit with the mounting rack (51) so as to drive the mounting rack (51) to linearly move in the vertical direction; or,

the first adjusting mechanism (60) comprises a guide structure (62) for guiding the movement of the mounting frame (51), the guide structure (62) comprises a guide post (63) arranged on the mounting frame (51) in a penetrating way and a linear bearing arranged on the periphery of the guide post (63), and the mounting frame (51) is connected with the linear bearing; or,

the first adjusting mechanism (60) comprises a lead screw (61) which is pivotally connected with the frame (10) and a driving handle (64) which is connected with the lead screw (61); or,

the screen printing machine comprises a plurality of first adjusting mechanisms (60) which are arranged on the frame (10) at intervals.

7. The screen printing machine according to any one of claims 2 to 6, characterized in that it further comprises a telescopic mechanism (70) connected to a first end of said connecting rod (52), at least part of said telescopic mechanism (70) being telescopically arranged with respect to said connecting rod (52), said squeegee mechanism (20) being connected to said connecting rod (52) through said telescopic mechanism (70).

8. The screen printing machine according to claim 7, characterized in that the telescopic mechanism (70) comprises a rodless cylinder (71), the rodless cylinder (71) comprising a first slider (72) connected to the connecting rod (52) and a guide rod (73) movable with respect to the first slider (72), the squeegee mechanism (20) being connected to the guide rod (73).

9. The screen printing machine according to claim 7, characterized in that the squeegee assembly (20) further comprises an oil return structure (80) on one side of the squeegee assembly (21), the oil return structure (80) being connected to the connecting rod (52) through the telescopic mechanism (70).

10. The screen printing machine according to any one of claims 1 to 6, wherein the tooling fixing mechanism (40) comprises a body (41) and a mounting groove (42) arranged on the body (41), and the mounting groove (42) is used for mounting a component to be printed.

11. The screen printing machine according to any one of claims 1 to 6, further comprising a second adjusting mechanism (90) disposed on the frame (10), wherein the tool fixing mechanism (40) is connected to the frame (10) through the second adjusting mechanism (90), and the tool fixing mechanism (40) is movably disposed in a horizontal plane relative to the frame (10) under the driving of the second adjusting mechanism (90).

12. The screen printing machine of claim 11,

the second adjusting mechanism (90) comprises a first linear guide rail (91) and a second driving structure (92) in driving connection with at least part of the first linear guide rail (91), the tool fixing mechanism (40) is connected with the first linear guide rail (91), and the tool fixing mechanism (40) is movably arranged along a first direction relative to at least part of the first linear guide rail (91) under the driving of the second driving structure (92); or,

the silk screen printing machine is including a plurality of that connect gradually second adjustment mechanism (90), and is a plurality of second adjustment mechanism (90) set gradually along vertical direction, and is a plurality of at least two in second adjustment mechanism (90) the direction of setting up of first linear guide (91) of second adjustment mechanism (90) is inequality.

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