Screen printing device

Abstract

The invention discloses a silk-screen printing device, and relates to the technical field of silk-screen printing equipment, the silk-screen printing device comprises a bottom plate, the top of the bottom plate is provided with a cover frame, one side of the cover frame is rotatably connected with the bottom plate through a hinge, the side, away from the hinge, of the cover frame is fixedly provided with a handle used for lifting the cover frame, and the inner side of the cover frame is rotatably provided with a roller shaft; a screen for printing is wound on the side face of the roller shaft, a protection frame is fixedly arranged on the inner wall of the cover frame, and the scraper assembly is used for extruding the screen to achieve the printing function and can replace manual operation. And the oil supply assembly is used for providing ink for the printing device. According to the silk-screen printing device, original manual operation is replaced with the mode that printing automation is achieved in the mode that the motor drives the extrusion bin, the problem that printing images and texts are not uniform due to the fact that an original scraper is not uniform in stress is solved, the extrusion bin can absorb printing ink into the ink storage tank during printing, and the utilization rate of the printing ink is increased.

Description

Technical Field

[0001] The invention relates to the technical field of screen printing equipment, and in particular to a screen printing device. Background Art

[0002] Screen printing is a technology that uses a silk screen as a base and uses a photosensitive platemaking method to make a screen printing plate with images and texts, and then uses it for printing. When printing, ink is poured into one end of the screen printing plate, and a scraper is used to apply a certain pressure to the ink part of the screen printing plate, while moving at a constant speed toward the other end of the screen printing plate. During the movement, the ink is squeezed from the mesh of the image part by the scraper onto the substrate, forming an image and text that is the same as the original. Some clothing design studios often use screen printing to print clothing patterns. The screen printing devices used by these studios are mostly manual application, which often causes uneven printing of images and texts due to uneven manual force, and some ink is squeezed on the surface of the screen and cannot be recovered, resulting in waste. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] The technical problem to be solved by the present invention is that, in view of the above-mentioned defects of the prior art, a screen printing device is provided, which can utilize a motor to replace manual labor when in use to realize the automated operation of screen printing, thereby obtaining a stable printing force, and can recycle the ink by absorbing the ink.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a screen printing device, comprising: a bottom plate, a cover frame is arranged on the top of the bottom plate, one side of the cover frame is rotatably connected to the bottom plate through a hinge, a handle for lifting the cover frame is fixedly arranged on the side of the cover frame away from the hinge, a roller is rotatably arranged on the inner side of the cover frame, a screen for printing is wound on the side of the roller, a protective frame is fixedly arranged on the inner wall of the cover frame, and, The scraper assembly is used to squeeze the screen to achieve the printing function and can replace manual operation, and includes a driving member arranged on one side of the cover frame, an extruding member arranged on one side of the driving member, and a rebound member arranged on one side of the roller shaft; The oil supply assembly is used to provide ink for a printing device, and comprises a peristaltic member arranged on the inner side of a driving member and a reversing member arranged on the outer side of the driving member.

[0006] As a preferred solution of the screen printing device of the present invention, the roller is provided with a pair and is rotatably arranged at two ends inside the cover frame respectively, and the protective frame is used to protect the screen, and its bottom abuts against the surface of the screen.

[0007] As a preferred embodiment of the screen printing device of the present invention, the driving component includes an oil storage tank, a connecting pipe 1, a mounting cylinder, an extrusion bin, a connecting pipe 2, a side bracket, a motor and a screw rod. The oil storage tank is located directly above the cover plate, the connecting pipe 1 is connected and arranged at the bottom of the oil storage tank, the mounting cylinder is located below the oil storage tank, the end of the connecting pipe 1 away from the oil storage tank passes through and is fixedly arranged on a side of the mounting cylinder close to the oil storage tank, the extrusion bin is located directly below the mounting cylinder, the top of the connecting pipe 2 passes through and is fixedly arranged on the side of the mounting cylinder, the side of the connecting pipe 2 away from the mounting cylinder passes through and is slidably arranged on the top of the extrusion bin, and when the printing device is not in use, there is a gap between the sharp corner of the bottom of the extrusion bin and the surface of the screen.

[0008] As a preferred embodiment of the screen printing device of the present invention, the side bracket is fixedly arranged on the side of the oil storage tank, the motor is fixedly arranged on the side of the cover frame, the screw rod and the output end of the motor are fixedly connected through a coupling, and the screw rod passes through and is threadedly connected to the end of the side bracket away from the oil storage tank.

[0009] As a preferred embodiment of the screen printing device described in the present invention, the extrusion member includes a connecting frame, a spring push rod, a limit rod, a spring 1 and a slide rail, the connecting frame is fixedly arranged on the side of the extrusion bin, and one end of the connecting frame away from the extrusion bin extends to the top of the cover frame, the spring push rod is fixedly arranged on the side of the connecting member, the limit rod is fixedly arranged on the side of the oil storage tank, the limit rod penetrates and is slidably arranged on the side of the top end of the connecting frame, the two ends of the spring 1 are respectively fixedly arranged on the end of the limit rod and the top of the connecting frame, the slide rail is fixedly arranged on the top side of the cover frame, and the inner side of the slide rail is slidably connected to the spring push rod.

[0010] As a preferred embodiment of the screen printing device described in the present invention, the resilient member includes a second spring, a baffle rod and a baffle plate, the second spring is wrapped around the outside of the roller shaft, the two ends of the second spring are respectively fixed on the side of the roller shaft and the inner side of the cover frame, the baffle rod is provided with a pair and fixedly provided on the side of the roller shaft, and the baffle plate is provided with a pair and fixedly provided on the inner side of the cover frame.

[0011] As a preferred embodiment of the screen printing device described in the present invention, the peristaltic member includes a central shaft, gears, teeth, a rotating frame, an extrusion roller and a hose, the central shaft is rotatably arranged at the inner center of the mounting cylinder, the gears are fixedly arranged at the end of the central shaft, the teeth are fixedly arranged at the top of the protective frame, and the gears and teeth are meshed.

[0012] As a preferred embodiment of the screen printing device of the present invention, the rotating frame is sleeved and fixedly arranged on the side of the central axis, the squeezing roller is rotatably arranged on the inner side of the rotating frame, the hose is tightly attached to the inner side of the mounting tube, and the two ends of the hose are respectively connected to an end of the connecting pipe 1 away from the oil storage tank and an end of the connecting pipe 2 away from the squeezing bin, and the side surface of the squeezing roller abuts against the side surface of the hose.

[0013] As a preferred embodiment of the screen printing device described in the present invention, the switching member includes an overflow hole, an outer arc plate, a groove, a spring three and an inner arc plate, the overflow hole is opened at the arc surfaces on both sides of the extrusion bin, the outer arc plate is located outside the extrusion bin and is rotatably arranged on the side of the extrusion bin, the groove is opened in the center of the outer arc plate, a pair of springs three are arranged and both surround the outside of the outer arc plate shaft, and the two ends of the spring three are respectively fixedly arranged on the inner side of the groove and the center of the outer arc plate shaft.

[0014] As a preferred solution of the screen printing device of the present invention, the inner arc plate is located inside the extrusion bin and is rotatably arranged inside the extrusion bin, and the inner arc plate and the outer arc plate are respectively abutted against the overflow hole openings on different sides of the extrusion bin.

[0015] The beneficial effects of the present invention are as follows: the screen printing device realizes automatic printing by means of a motor-driven extrusion bin, replacing the original manual operation, thus avoiding the problem of uneven printing of images and texts due to uneven force on the scraper, and during printing, the extrusion bin can absorb the ink into the oil storage tank, thereby increasing the utilization rate of the ink. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0017] Figure 1 It is a schematic diagram of the overall structure of the screen printing device of the present invention.

[0018] Figure 2 This is a half-section view of the cover frame of the present invention.

[0019] Figure 3 It is a schematic diagram of the structure of the driving member of the present invention.

[0020] Figure 4 It is a partial cross-sectional view of the installation tube of the present invention.

[0021] Figure 5 It is a schematic diagram of the path of the spring push rod on the slide rail of the present invention.

[0022] Figure 6 It is a schematic diagram of the roller and screen structure of the present invention.

[0023] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of A.

[0024] Figure 8 It is a schematic diagram of the structure of the switching member of the present invention. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0029] Example 1 Reference Figure 1~Figure 2 , which is the first embodiment of the present invention, provides a screen printing device, including a bottom plate 100, a cover frame 200 is arranged on the top of the bottom plate 100, one side of the cover frame 200 is rotatably connected to the bottom plate 100 through a hinge, a handle for lifting the cover frame 200 is fixedly arranged on the side of the cover frame 200 away from the hinge, a roller 300 is rotatably arranged on the inner side of the cover frame 200, a screen for printing is wound on the side of the roller 300, a protective frame 400 is fixedly arranged on the inner wall of the cover frame 200, and, The scraper assembly 500 is used to squeeze the screen to achieve the printing function and can replace manual operation, and includes a driving member 501 arranged on one side of the cover frame 200, an extruding member 502 arranged on one side of the driving member 501, and a rebound member 503 arranged on one side of the roller 300; The oil supply assembly 600 is used to provide ink for the printing device, and includes a peristaltic member 601 disposed on the inner side of the driving member 501 and a reversing member 602 disposed on the outer side of the driving member 501 .

[0030] A pair of rollers 300 are provided and are rotatably disposed at two ends of the cover frame 200 . The protection frame 400 is used to protect the screen, and its bottom abuts against the surface of the screen.

[0031] When in use, the whole cover frame 200 is lifted by holding the handle, and then the substrate is placed on the bottom plate 100, and then the cover frame 200 is closed, and finally the scraper assembly 500 and the oil supply assembly 600 are used for screen printing.

[0032] Example 2 Reference Figure 3~Figure 7 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the driving member 501 includes an oil storage tank 501a, a connecting pipe 1 501b, a mounting cylinder 501c, an extrusion chamber 501d, a connecting pipe 2 501e, a side bracket 501f, a motor 501g and a screw rod 501h. The oil storage tank 501a is located directly above the cover plate, the connecting pipe 1 501b is connected and arranged at the bottom of the oil storage tank 501a, the mounting cylinder 501c is located below the oil storage tank 501a, and the connecting pipe 1 One end of 501b away from the oil storage tank 501a passes through and is fixedly set on the side of the installation cylinder 501c close to the oil storage tank 501a, the extrusion chamber 501d is located directly below the installation cylinder 501c, the top of the connecting tube 501e passes through and is fixedly set on the side of the installation cylinder 501c, and the side of the connecting tube 501e away from the installation cylinder 501c passes through and is slidably set on the top of the extrusion chamber 501d. When the printing device is not in use, there is a gap between the sharp corner of the bottom of the extrusion chamber 501d and the surface of the screen.

[0033] Among them, the oil storage tank 501a and the interior of the installation cylinder 501c are connected through the connecting tube 1 501b, and the installation cylinder 501c and the extrusion chamber 501d are connected through the connecting tube 2 501e, and the extrusion chamber 501d can also slide up and down along the axial direction of the connecting tube 2 501e, so the top of the connecting tube 2 501e and the extrusion chamber 501d are dynamically sealed. The connecting tube 1 501b and the connecting tube 2 501e are connected by the hose 601f, so the ink in the oil storage tank 501a can flow to the extrusion chamber 501d through the ink in the path of connecting tube 1 501b-hose 601f-connecting tube 2 501e-extrusion chamber 501d.

[0034] The side bracket 501f is fixedly arranged on the side of the oil storage tank 501a, the motor 501g is fixedly arranged on the side of the cover frame 200, the screw rod 501h and the output end of the motor 501g are fixedly connected through a coupling, and the screw rod 501h penetrates and is threadedly connected to the end of the side bracket 501f away from the oil storage tank 501a. This part is the core component that drives the oil storage tank 501a and the installation cylinder 501c to move, and a pair of them are arranged symmetrically on both sides of the oil storage tank 501a.

[0035] The extrusion member 502 includes a connecting frame 502a, a spring push rod 502b, a limiting rod 502c, a spring 502d and a slide rail 502e. The connecting frame 502a is fixedly arranged on the side of the extrusion bin 501d, and one end of the connecting frame 502a away from the extrusion bin 501d extends to the top of the cover frame 200. The spring push rod 502b is fixedly arranged on the side of the connecting member, and the limiting rod 502c is fixedly arranged on the side of the oil storage tank 501a. The limiting rod 502c penetrates and is slidably arranged on the side of the top of the connecting frame 502a. The two ends of the spring 502d are respectively fixedly arranged on the end of the limiting rod 502c and the top of the connecting frame 502a. The slide rail 502e is fixedly arranged on the top side of the cover frame 200, and the inner side of the slide rail 502e is slidably connected to the spring push rod 502b.

[0036] The extrusion member 502 is also provided with a pair of symmetrically arranged on both sides of the oil storage tank 501a, which is mainly used to control the up and down movement of the extrusion chamber 501d; wherein, the limit rod 502c is used to maintain the sliding stability of the connecting frame 502a, and the spring 1 502d is used for resetting the connecting frame 502a after movement. Under normal conditions, the connecting frame 502a is squeezed toward the side away from the screen under the action of the spring 1 502d; the slide rail 502e is an important part for the extrusion member 502 to control the extrusion chamber 501d and ink recovery, which includes multiple sections, each section plays a different role. It is worth noting that the height of the contact surface between the slide rail 502e and the spring push rod 502b of the AB section is slightly lower than that of the EF section, which results in that in the AB section, the extrusion chamber 501d slightly squeezes the screen, while in the EF section, the extrusion chamber 501d is separated from the screen.

[0037] The rebound member 503 includes a spring 503a, a baffle 503b and a baffle plate 503c. The spring 503a surrounds the outside of the rotating shaft of the roller shaft 300. The two ends of the spring 503a are respectively fixed on the side of the roller shaft 300 and the inner side of the cover frame 200. A pair of baffle rods 503b are provided and fixed on the side of the roller shaft 300. A pair of baffle plates 503c are provided and fixed on the inner side of the cover frame 200.

[0038] Each roller 300 corresponds to a resilient member 503. When the roller 300 rotates, the baffle 503c is used to block the movement of the baffle 503b, thereby blocking the rotation of the roller 300. Therefore, the rotation angle of the roller 300 is limited. Under the extrusion of the extrusion chamber 501d, although the screen will be partially rolled out from the roller 300, due to the blocking of the baffle 503c, the amount of screen rolled out is limited and cannot contact the substrate. It is worth mentioning that from the extrusion of the screen by the extrusion chamber 501d to the contact of the baffle 503b and the baffle 503c, the lowest point of the screen can maintain a distance of 2 to 6 mm from the substrate. This distance can only be eliminated when the extrusion chamber 501d continues to extrude, that is, the screen undergoes obvious elastic deformation. At this time, the screen is in contact with the substrate, but after the extrusion chamber 501d slides over the screen, the screen is immediately separated from the substrate to prevent the ink at the printed image from diffusing in the clothing fibers and causing deformation of the image.

[0039] In addition, after the extrusion bin 501d is reset to its original height, the roller 300 will pull the screen under the action of spring 2 503a, causing the screen to vibrate slightly. This vibration can separate the ink in the mesh from the screen, thereby preventing the screen holes from being blocked and facilitating the recovery of the ink.

[0040] During use: after placing the printing material, turn on the motor 501g. The motor 501g uses the lead screw 501h to drive the driving member 501 and the extrusion member 502 to move. During the movement, the spring push rod 502b slides along the AB section of the slide rail 502e. At this time, the extrusion bin 501d is in place, but the ink has begun to be supplied. After passing the inclined surface, the spring push rod 502b enters the CD section of the slide rail 502e. At this time, the connecting frame 502a drives the extrusion bin 501d to lower. Under the action of the extrusion bin 501d, the screen and the printing material are in contact, and the extrusion bin 501d also pushes the ink through the screen to the substrate, thereby completing printing.

[0041] The motor 501g continues to rotate, and the spring push rod 502b enters the EF section of the slide rail 502e after passing through an inclined surface. At this time, the extrusion bin 501d is lifted to its original position. When sliding to the end of the slide rail 502e, the end of the spring push rod 502b bounces into the inclined groove at the end of the slide rail 502e. Then the motor 501g reverses, and the spring push rod 502b slides along the GH section of the inclined groove of the slide rail 502e. The extrusion bin 501d drops rapidly, and when passing through the DC section, the extrusion bin 501d prints for the second time and collects ink, and then reaches the BA section to complete a printing process.

[0042] During printing, the extrusion bin 501d replaces the original scraper, and the extrusion bin 501d moves under the control of the motor 501g with a more uniform speed, while the applied pressure is changed by the slide rail 502e. Since the CD segment is a flat surface, the pressure provided by the extrusion bin 501d is very uniform, so the printed images and texts can be more uniform.

[0043] The remaining structures are the same as those of Example 1.

[0044] Example 3 Reference Figure 3~Figure 8 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: the peristaltic member 601 includes a central shaft 601a, a gear 601b, teeth 601c, a rotating frame 601d, an extrusion roller 601e and a hose 601f. The central shaft 601a is rotatably set at the inner center of the mounting cylinder 501c, the gear 601b is fixedly set at the end of the central shaft 601a, the teeth 601c are fixedly set at the top of the protective frame 400, and the gear 601b and the teeth 601c are meshed.

[0045] Among them, a pair of gears 601b, teeth 601c and rotating frame 601d are set, and are symmetrically arranged on both sides of the mounting cylinder 501c; a plurality of extrusion rollers 601e are provided, and the end of each extrusion roller 601e is connected to a branch of the rotating frame 601d; the hose 601f is adapted to the connecting tube 1 501b and the connecting tube 2 501e, and multiple groups are set to ensure that there is enough ink to cover the printed images and texts.

[0046] The rotating frame 601d is sleeved and fixed on the side of the central axis 601a, the squeezing roller 601e is rotatably set on the inner side of the rotating frame 601d, the hose 601f is tightly attached to the inner side of the mounting tube 501c, and the two ends of the hose 601f are respectively connected to one end of the connecting pipe 1 501b away from the oil storage tank 501a and one end of the connecting pipe 2 501e away from the squeezing chamber 501d, and the side of the squeezing roller 601e abuts against the side of the hose 601f.

[0047] The reversing member 602 includes an overflow hole 602a, an outer arc plate 602b, a groove 602c, a spring three 602d and an inner arc plate 602e. The overflow hole 602a is opened on the arc surfaces on both sides of the extrusion bin 501d. The outer arc plate 602b is located outside the extrusion bin 501d and is rotatably set on the side of the extrusion bin 501d. The groove 602c is opened in the center of the outer arc plate 602b. A pair of springs three 602d are provided and both surround the outside of the rotating shaft of the outer arc plate 602b. The two ends of the spring three 602d are respectively fixed on the inner side of the groove 602c and the center of the rotating shaft of the outer arc plate 602b.

[0048] The inner arc plate 602e is located inside the extrusion chamber 501d and is rotatably disposed inside the extrusion chamber 501d. The inner arc plate 602e and the outer arc plate 602b are respectively abutted against the orifices of the overflow hole 602a on different sides of the extrusion chamber 501d.

[0049] During use: after the motor 501g is started, the gear 601b and the tooth 601c are meshed, and the gear 601b drives the central shaft 601a to rotate. The central shaft 601a drives each squeezing roller 601e to rotate through the rotating frame 601d. When the squeezing roller 601e rotates, it squeezes the hose 601f, and squeezes the ink inside the hose 601f into the squeezing chamber 501d. In the squeezing chamber 501d, the inner arc plate 602e blocks the overflow hole 602a on one side due to gravity, and the direction of the blocked overflow hole 602a is opposite to the forward direction of the squeezing chamber 501d, thereby avoiding excessive ink residue on the part of the screen that the squeezing chamber 501d slides over. The outer arc plate 602b is squeezed by the ink, and it overcomes the elastic force of the spring three 602d and rotates a certain angle, so that the ink can flow out from the overflow hole 602a, thereby achieving printing.

[0050] In the AB section of the slide rail 502e, the extrusion chamber 501d slightly squeezes the screen, the gear 601b contacts the tooth 601c, and some ink is produced. The ink slides with the extrusion chamber 501d, and this part of the ink ensures that there is enough ink for printing at the beginning of the CD section. In the EF section, although ink is produced, the extrusion chamber 501d has been separated from the screen at the same time, so the tip of the extrusion chamber 501d can sweep over the ink that falls on the surface of the screen, thereby avoiding a large amount of ink accumulation.

[0051] After the motor 501g is reversed, the extrusion chamber 501d located in the GH section moves down quickly. At this time, a large amount of ink on the surface of the screen is on the side of the extrusion chamber 501d close to the motor 501g. After the gear 601b is reversed, the hose 601f begins to absorb ink from the extrusion chamber 501d. Under the dual effects of the elastic force of the spring 3 602d and the internal attraction of the extrusion chamber 501d, the outer arc plate 602b is tightly attached to the overflow hole 602a on one side thereof, so no ink flows out from the outer arc plate 602b side. The inner arc plate 602e is lifted up due to the internal and external pressure difference of the extrusion chamber 501d. As the extrusion chamber 501d squeezes the screen surface, the ink accumulates at the orifice of the overflow hole 602a on one side of the inner arc plate 602e. This part of the accumulated ink will be absorbed by the extrusion chamber 501d into the oil storage tank 501a, thereby completing the recovery of the ink. When the motor 501g is not working, the ink in the hose 601f is stationary under the squeezing action of the squeezing roller 601e, thereby avoiding ink leakage.

[0052] The remaining structure is the same as that of Example 2.

[0053] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0054] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0055] It should be understood that in the development process of any actual implementation, such as in any engineering or design project, a large number of specific implementation decisions may be made. Such development efforts may be complex and time-consuming, but for those of ordinary skill who benefit from this disclosure, without excessive experimentation, the development efforts will be a routine work of design, manufacture and production. It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limited. Although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those of ordinary skill in the art that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. A screen printing device, characterized in that: include, A bottom plate (100), a cover frame (200) is arranged on the top of the bottom plate (100), one side of the cover frame (200) is rotatably connected to the bottom plate (100) via a hinge, a handle for lifting the cover frame (200) is fixedly arranged on the side of the cover frame (200) away from the hinge, a roller (300) is rotatably arranged on the inner side of the cover frame (200), a screen for printing is wound around the side of the roller (300), a protective frame (400) is fixedly arranged on the inner wall of the cover frame (200), and, A scraper assembly (500) is used to squeeze the screen to achieve a printing function and can replace manual operation, comprising a driving member (501) arranged on one side of the cover frame (200), an extruding member (502) arranged on one side of the driving member (501), and a rebound member (503) arranged on one side of the roller (300); The oil supply assembly (600) is used to provide ink for a printing device, and comprises a peristaltic member (601) arranged on the inner side of a driving member (501) and a reversing member (602) arranged on the outer side of the driving member (501).

2. The screen printing device according to claim 1, characterized in that: The roller shaft (300) is provided with a pair and is rotatably arranged at two ends inside the cover frame (200), and the protection frame (400) is used to protect the wire mesh, and its bottom abuts against the surface of the wire mesh.

3. The screen printing device according to claim 2, characterized in that: The driving member (501) comprises an oil storage tank (501a), a connecting pipe 1 (501b), a mounting tube (501c), an extrusion chamber (501d), a connecting pipe 2 (501e), a side bracket (501f), a motor (501g) and a screw rod (501h); the oil storage tank (501a) is located directly above the cover plate; the connecting pipe 1 (501b) is connected and arranged at the bottom of the oil storage tank (501a); the mounting tube (501c) is located below the oil storage tank (501a); and the connecting pipe 1 (501b) is away from the oil storage tank. One end of the connecting tube (501a) penetrates and is fixedly arranged on a side of the mounting tube (501c) close to the oil storage tank (501a); the extrusion chamber (501d) is located directly below the mounting tube (501c); the top of the connecting tube 2 (501e) penetrates and is fixedly arranged on the side of the mounting tube (501c); the side of the connecting tube 2 (501e) away from the mounting tube (501c) penetrates and is slidably arranged on the top of the extrusion chamber (501d); when the printing device is not in use, there is a gap between the sharp corner of the bottom of the extrusion chamber (501d) and the surface of the screen.

4. The screen printing device according to claim 3, characterized in that: The side bracket (501f) is fixedly arranged on the side of the oil storage tank (501a), the motor (501g) is fixedly arranged on the side of the cover frame (200), the screw rod (501h) and the output end of the motor (501g) are fixedly connected via a coupling, and the screw rod (501h) passes through and is threadedly connected to an end of the side bracket (501f) away from the oil storage tank (501a).

5. The screen printing device according to claim 4, characterized in that: The extrusion member (502) comprises a connecting frame (502a), a spring push rod (502b), a limiting rod (502c), a spring 1 (502d) and a slide rail (502e); the connecting frame (502a) is fixedly arranged on the side of the extrusion bin (501d); one end of the connecting frame (502a) away from the extrusion bin (501d) extends to the top of the cover frame (200); the spring push rod (502b) is fixedly arranged on the side of the connecting member; the limiting rod (502c) The connecting frame (502a) is a connecting frame having a plurality of springs (502d) and a plurality of springs (502c) connected to the connecting frame (502a). The connecting frame (502a) is a connecting frame having a plurality of springs (502d) connected to the connecting frame (502a). The connecting frame (502c) is fixedly arranged on the side of the oil storage tank (501a), the limiting rod (502c) penetrates and is slidably arranged on the side of the top of the connecting frame (502a), the two ends of the spring one (502d) are respectively fixedly arranged on the end of the limiting rod (502c) and the top of the connecting frame (502a), the sliding rail (502e) is fixedly arranged on the top side of the cover frame (200), and the inner side of the sliding rail (502e) is slidably connected to the spring push rod (502b).

6. The screen printing device according to claim 5, characterized in that: The resilient member (503) comprises a second spring (503a), a stop rod (503b) and a stop plate (503c); the second spring (503a) surrounds the outside of the rotating shaft of the roller shaft (300); the two ends of the second spring (503a) are respectively fixedly arranged on the side of the roller shaft (300) and the inner side of the cover frame (200); a pair of the stop rods (503b) are provided and fixedly arranged on the side of the roller shaft (300); and a pair of the stop plates (503c) are provided and fixedly arranged on the inner side of the cover frame (200).

7. The screen printing device according to claim 6, characterized in that: The peristaltic member (601) comprises a central shaft (601a), a gear (601b), teeth (601c), a rotating frame (601d), an extrusion roller (601e) and a hose (601f); the central shaft (601a) is rotatably arranged at the inner center of the mounting cylinder (501c); the gear (601b) is fixedly arranged at the end of the central shaft (601a); the teeth (601c) are fixedly arranged at the top of the protective frame (400); and the gear (601b) and the teeth (601c) are meshed.

8. The screen printing device according to claim 7, characterized in that: The rotating frame (601d) is sleeved and fixedly arranged on the side of the central axis (601a); the squeezing roller (601e) is rotatably arranged on the inner side of the rotating frame (601d); the hose (601f) is tightly attached to the inner side of the mounting cylinder (501c); the two ends of the hose (601f) are respectively connected to an end of the connecting pipe 1 (501b) away from the oil storage tank (501a) and an end of the connecting pipe 2 (501e) away from the squeezing chamber (501d); and the side surface of the squeezing roller (601e) abuts against the side surface of the hose (601f).

9. The screen printing device according to claim 8, characterized in that: The reversing member (602) comprises an overflow hole (602a), an outer arc plate (602b), a groove (602c), a spring three (602d) and an inner arc plate (602e); the overflow hole (602a) is provided at the arc surfaces on both sides of the extrusion bin (501d); the outer arc plate (602b) is located outside the extrusion bin (501d) and is rotatably arranged on the side of the extrusion bin (501d); the groove (602c) is provided at the center of the outer arc plate (602b); a pair of springs three (602d) are provided and both surround the outside of the rotating shaft of the outer arc plate (602b); and two ends of the spring three (602d) are respectively fixedly arranged on the inner side of the groove (602c) and at the center of the rotating shaft of the outer arc plate (602b).

10. The screen printing device according to claim 9, characterized in that: The inner arc plate (602e) is located inside the extrusion bin (501d) and is rotatably arranged inside the extrusion bin (501d); the inner arc plate (602e) and the outer arc plate (602b) respectively abut against the orifices of the overflow hole (602a) on different sides of the extrusion bin (501d).

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