CN112428670B

CN112428670B - Screen printing machine

Info

Publication number: CN112428670B
Application number: CN202011249971.1A
Authority: CN
Inventors: 陈小英
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-12-31
Anticipated expiration: 2040-11-10
Also published as: CN112428670A

Abstract

The present application provides a screen printing machine. The screen printing machine comprises a machine body, a printing head device, a screen arm mechanism, a reciprocating driving mechanism, a discharging mechanism, a feeding mechanism and a discharging mechanism; the printing head device is arranged on the machine body; the screen arm mechanism comprises a positioning assembly and a screen printing plate piece, the positioning assembly is arranged on the machine body and is used for connecting and positioning the screen printing plate piece, the screen printing plate piece is arranged corresponding to the printing head device, and the printing head device is used for printing the pattern of the screen printing plate piece on the surface of a product; the reciprocating driving mechanism comprises a reciprocating driving component and a sliding seat, the reciprocating driving component is arranged on the machine body, the sliding seat is connected to the machine body in a sliding manner, and the sliding seat is connected with a power output end of the reciprocating driving component; the printing head device can print the patterns of the screen plate piece on the surface of the product, the other discharging mechanism can discharge materials, and each discharging mechanism reciprocates relative to the machine body along with the sliding seat, so that uninterrupted printing is realized, and the printing efficiency of the product is improved.

Description

Screen printing machine

Technical Field

The invention relates to the technical field of printing equipment, in particular to a screen printing machine.

Background

A screen printer, referred to as a screen printer for short, is a device for printing ink on a product through a screen. The screen printer can print on the forming objects and the concave-convex surfaces with different shapes, and is mainly applied to the processing industries of electronics, hardware, glass, plastic and the like, such as silk-screen pattern marks of printed products or marks of instrument shell panels. The traditional screen printing machine adopts a plane screen printing plate to print on a round surface printing stock, and the mode specifically comprises the following steps: the ink scraping plate is fixed, the printing plate moves horizontally, and the printing stock, namely a product rotates along with the printing plate at the same linear speed.

When a traditional screen printing machine is used for printing a plurality of products in batch, the plurality of products need to be printed for multiple times, in the process, multiple shutdown and multiple startup steps need to be carried out, namely, multiple intermittent printing operations are carried out to complete the printing of the plurality of products in batch, and the printing operations of two adjacent times need to wait for a period of time, so that the printing efficiency of a single product is low.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the screen printing machine with higher transfer printing efficiency on a single printed object.

The purpose of the invention is realized by the following technical scheme:

a screen printing machine comprising:

a body;

the printing head device is arranged on the machine body;

the screen arm mechanism comprises a positioning assembly and a screen printing plate piece, the positioning assembly is arranged on the machine body and is used for connecting and positioning the screen printing plate piece, the screen printing plate piece is arranged corresponding to the printing head device, and the printing head device is used for printing the pattern of the screen printing plate piece on the surface of the product;

the reciprocating driving mechanism comprises a reciprocating driving component and a sliding seat, the reciprocating driving component is arranged on the machine body, the sliding seat is connected to the machine body in a sliding manner, and the sliding seat is connected with a power output end of the reciprocating driving component;

the at least two discharging mechanisms are arranged on the sliding seat side by side; each discharging mechanism is used for placing a product and conveying the product to a feeding end adjacent to the feeding mechanism when moving to a position corresponding to the feeding end of the feeding mechanism along with the sliding seat;

the feeding mechanism is arranged on the machine body and is positioned on one side, away from the printing head device, of the screen printing piece, and the feeding mechanism is used for grabbing the product to be printed on the discharging mechanism and conveying the product to be printed to a position corresponding to the screen printing piece;

the feeding end of the blanking mechanism is close to the blanking end of the feeding mechanism, and the feeding mechanism is further used for conveying the printed products to the blanking mechanism.

In one embodiment, the print head device comprises a translation driving mechanism and a print head mechanism;

the translation driving mechanism comprises a first driving assembly and a fixed seat, the first driving assembly is mounted on the machine body, and a power output end of the first driving assembly is connected with the fixed seat;

the printing head mechanism comprises a second driving assembly and a printing and scraping assembly, the second driving assembly is arranged on the fixed seat, and the power output end of the second driving assembly is connected with the printing and scraping assembly; the printing and scraping assembly is used for printing the pattern of the screen plate piece on the surface of the product; the screen plate piece and the printing and scraping assembly are arranged correspondingly, and the feeding mechanism is positioned on one side of the screen plate piece, which is far away from the printing and scraping assembly; and an included angle exists between the power output direction of the first driving assembly and the power output direction of the second driving assembly.

In one embodiment, the fixing seat comprises a fixing seat main body and a guide rail seat, the guide rail seat is connected with the power shaft of the first driving component, the fixing seat main body is connected with the guide rail seat in a sliding mode, and the second driving component is installed on the fixing seat main body.

In one embodiment, the second driving assembly comprises a lifting cylinder, a guide rod seat and a fixed shaft, the lifting cylinder is mounted on the fixed seat, and the power output end of the lifting cylinder is connected with the guide rod seat; the guide rod seat is connected with the fixed seat in a sliding mode, the guide rod seat is connected with the fixed shaft, and the guide rod seat is connected with the printing and scraping assembly through the fixed shaft.

In one embodiment, the printing and scraping assembly comprises a clamping plate, a clamping seat and an ink returning scraper, the clamping plate is connected with the power output end of the second driving assembly, the clamping seat is connected with the clamping plate, the ink returning scraper is fixed on the clamping seat, and the ink returning scraper is used for printing the pattern of the screen plate piece on the surface of the product.

In one embodiment, the positioning assembly includes a fixed frame, a first clamping member and a second clamping member, the fixed frame is connected to the machine body, the first clamping member and the second clamping member are both slidably disposed on the fixed frame, the first clamping member and the second clamping member are disposed opposite to each other, and the first clamping member and the second clamping member are commonly used for positioning the stencil sheet.

In one embodiment, the reciprocating driving assembly includes a driving motor, a lead screw and a nut, the driving motor is mounted on the machine body, one end of the lead screw is connected with a power shaft of the driving motor, the other end of the lead screw is rotatably connected with the machine body, the nut is sleeved on the lead screw and is in threaded connection with the lead screw, and the nut is connected to the sliding seat.

In one embodiment, the number of the emptying mechanisms is two.

In one embodiment, the feeding mechanism is used for sucking and grabbing the product to be printed on the discharging mechanism and conveying the product to be printed to a position corresponding to the screen piece.

In one embodiment, the feeding mechanism comprises a rotary driving assembly, a rotary frame, an air suction pipe, an air suction inner cylinder and a plurality of outer air suction plates; the rotary driving assembly is mounted on the machine body, a power shaft of the rotary driving assembly is connected with the rotary frame, the rotary frame is respectively connected with the machine body and the air suction pipe in a rotating mode, the air suction inner cylinder is connected with the rotary frame, an air suction cavity and a plurality of air suction holes are formed in the air suction inner cylinder, the air suction holes and the air suction pipe are communicated with the air suction cavity, the air suction pipe is used for sucking air in the air suction cavity, and the air suction holes are arranged at intervals along the circumferential direction of the air suction inner cylinder; the outer air suction plates are arranged on the rotating frame at intervals, each outer air suction plate is communicated with the corresponding air suction hole, and each outer air suction plate is used for adsorbing, grabbing the product to be printed on the material placing mechanism and conveying the product to be printed to the position corresponding to the screen printing piece.

In one embodiment, the blanking mechanism comprises a support and a tray, the support is connected with the machine body, the support supports and fixes the tray, the tray is arranged near the blanking end of the feeding mechanism, and the extending direction of the end part of the tray near the blanking end of the feeding mechanism is the same as the tangential direction of the rotating frame.

In one embodiment, the screen printing machine further comprises an electric cabinet assembly, the electric cabinet assembly is arranged on the machine body, and the electric cabinet assembly is electrically connected with the printing head device, the reciprocating driving assembly, the rotary driving assembly and the control end of each discharging mechanism respectively.

Compared with the prior art, the invention has at least the following advantages:

1. the slide seat is connected with the power output end of the reciprocating driving assembly, so that the reciprocating driving assembly drives the slide seat to slide in a reciprocating manner relative to the machine body, at least two discharging mechanisms are arranged on the slide seat side by side, each discharging mechanism moves relative to the machine body along with the slide seat, when one discharging mechanism moves to a position corresponding to the feeding end of the feeding mechanism along with the slide seat, the discharging mechanism conveys a product to the feeding end adjacent to the feeding mechanism, the feeding mechanism grabs the product to be printed on the discharging mechanism, and conveys the product to be printed to a position corresponding to the screen printing piece, so that the printing head device can print the pattern of the screen printing piece on the surface of the product; after the printing head device prints the patterns of the screen plate on the surface of the product, the feeding mechanism conveys the printed product to the blanking mechanism, so that the printed product is automatically blanked through the feeding mechanism, and the printing of the product is realized;

2. because the figure of drop feed mechanism is two at least, and each drop feed mechanism all is used for placing the product of treating the printing, when one of them drop feed mechanism moves to the position that corresponds with the material loading end of feed mechanism along with the slide, this drop feed mechanism carries the product to the material loading end of neighbouring feed mechanism, make feed mechanism snatch the product of treating the printing that is located drop feed mechanism, and will treat the product of printing and transport to the position that the half tone spare corresponds, make printer head device can print the pattern of half tone spare in the surface of product, and another drop feed mechanism can carry out the blowing, including each drop feed mechanism all along with the slide for organism reciprocating motion, so realize incessant printing, improved the printing efficiency of product.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of a screen printing machine of an embodiment;

FIG. 2 is a partial schematic view from another perspective of the screen printing machine of FIG. 1;

FIG. 3 is a partial schematic view from another perspective of the screen printing machine of FIG. 2;

FIG. 4 is a schematic view of the screen printing machine of FIG. 2 from yet another perspective;

FIG. 5 is an enlarged schematic view at A of the screen printing machine of FIG. 4;

FIG. 6 is a partial schematic view from another perspective of the screen printing machine of FIG. 5;

FIG. 7 is a schematic view from yet another perspective of the screen printing machine of FIG. 4;

FIG. 8 is an enlarged schematic view at C of the screen printing machine of FIG. 7;

FIG. 9 is a partial schematic view of a print head apparatus of the screen printing machine of FIG. 8;

FIG. 10 is an enlarged schematic view at B of the screen printing machine of FIG. 4;

FIG. 11 is a schematic view from yet another perspective of the screen printing machine of FIG. 2;

FIG. 12 is a cross-sectional view taken along line D-D of the screen printing machine of FIG. 11;

fig. 13 is a partial schematic view of the screen printer of fig. 12.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, 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 invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 and 2, a screen printing machine 10 according to an embodiment includes a machine body 100, a print head device 200, a web arm mechanism 300, a reciprocating drive mechanism 400, a discharging mechanism 500, a feeding mechanism 600, and a discharging mechanism 700. The print head device 200 is disposed on the body 100. The screen arm mechanism 300 includes a positioning assembly 310 and a screen member (not shown), the positioning assembly 310 is disposed on the machine body 100, and the positioning assembly 310 is used for connecting and positioning the screen member, so that the screen member is relatively positioned on the machine body 100 by the positioning assembly 310. The screen plate is arranged corresponding to the printing head device. The feeding mechanism 600 is disposed on the machine body 100, the feeding mechanism 600 is disposed on a side of the stencil sheet facing away from the print head device 200, and the print head device 200 is configured to print the pattern of the stencil sheet on the surface of the product. In the present embodiment, the print head device 200 and the feed mechanism 600 are respectively located at both sides of the stencil sheet, so that the print head device 200 can print the pattern of the stencil sheet on the surface of the product of the feed mechanism 600.

As shown in fig. 1 and 2, in one embodiment, the reciprocating driving mechanism 400 includes a reciprocating driving assembly 410 and a sliding base 420, the reciprocating driving assembly 410 is disposed on the machine body 100, the sliding base 420 is slidably connected to the machine body 100, and the sliding base 420 is connected to a power output end of the reciprocating driving assembly 410, such that the reciprocating driving assembly 410 drives the sliding base 420 to slide in a reciprocating manner with respect to the machine body 100. The number of the discharging mechanisms 500 is at least two, and at least two discharging mechanisms 500 are arranged on the sliding base 420 side by side, that is, all the discharging mechanisms 500 are arranged on the sliding base 420 side by side. Each discharging mechanism 500 is used for placing a product and conveying the product to a position adjacent to the feeding end of the feeding mechanism 600 when moving to a position corresponding to the feeding end of the feeding mechanism 600 along with the sliding seat 420, so as to realize printing of the product to be printed. It will be appreciated that each drop off mechanism 500 can move with the slide 420 to a position corresponding to the loading end of the loading mechanism 600. When one of the discharging mechanisms 500 moves to a position corresponding to the feeding end of the feeding mechanism 600 along with the sliding base 420, the other discharging mechanism 500 moves to other positions along with the sliding base 420, and at this time, the other discharging mechanism 500 can be discharged.

As shown in fig. 1 and 2, in one embodiment, the feeding mechanism 600 is used to grab the product to be printed on the drop mechanism 500 and transport the product to be printed to a position corresponding to the screen member, so that the print head device 200 can print the pattern of the screen member on the surface of the product of the feeding mechanism 600. The feeding end of the discharging mechanism 700 is arranged close to the discharging end of the feeding mechanism 600, and the feeding mechanism 600 is further used for conveying the printed product to the discharging mechanism 700, so that automatic product discharging is realized.

In the screen printing machine 10, since the slide seat 420 is connected to the power output end of the reciprocating driving assembly 410, the reciprocating driving assembly 410 drives the slide seat 420 to slide in a reciprocating manner relative to the machine body 100, at least two discharging mechanisms 500 are arranged on the slide seat 420 side by side, each discharging mechanism 500 moves relative to the machine body 100 along with the slide seat 420, when one discharging mechanism 500 moves to a position corresponding to the feeding end of the feeding mechanism 600 along with the slide seat 420, the discharging mechanism 500 conveys a product to the feeding end adjacent to the feeding mechanism 600, the feeding mechanism 600 grabs the product to be printed on the discharging mechanism 500, and conveys the product to be printed to a position corresponding to the screen piece, so that the print head device 200 can print the pattern of the screen piece on the surface of the product; after the printing head device 200 prints the pattern of the stencil sheet on the surface of the product, the feeding mechanism 600 transports the printed product to the discharging mechanism 700, so that the printed product is automatically discharged through the feeding mechanism 600, thereby realizing the printing of the product; because the number of the discharging mechanisms 500 is at least two, and each discharging mechanism 500 is used for placing a product to be printed, when one discharging mechanism 500 moves to a position corresponding to the feeding end of the feeding mechanism 600 along with the sliding seat 420, the discharging mechanism 500 conveys the product to the feeding end adjacent to the feeding mechanism 600, so that the feeding mechanism 600 grabs the product to be printed on the discharging mechanism 500, and conveys the product to be printed to a position corresponding to the screen plate, so that the printing head device 200 can print the pattern of the screen plate on the surface of the product, while the other discharging mechanism 500 can discharge the product, and each discharging mechanism 500 reciprocates relative to the machine body 100 along with the sliding seat 420, thereby realizing uninterrupted printing and improving the printing efficiency of the product.

As shown in fig. 1 and 2, further, the print head apparatus 200 includes a translation driving mechanism 210 and a print head mechanism 220. The translational driving mechanism 210 includes a first driving assembly 212 and a fixing base 214, the first driving assembly 212 is mounted on the machine body 100, and a power output end of the first driving assembly 212 is connected to the fixing base 214, so that the first driving assembly 212 drives the fixing base 214 to move relative to the machine body 100.

As shown in fig. 2, the print head mechanism 220 further includes a second driving assembly 222 and a printing and scraping assembly 224, the second driving assembly 222 is disposed on the fixing base 214, and a power output end of the second driving assembly 222 is connected to the printing and scraping assembly 224, so that the power output end of the second driving assembly 222 drives the printing and scraping assembly 224 to move relative to the fixing base 214. The stencil piece corresponds to the print-scraping component, and the feeding mechanism 600 is located on one side of the stencil piece away from the print-scraping component 224. The squeegee assembly 224 is used to print the pattern of the stencil member onto the surface of the product. The power output direction of the first driving assembly 212 and the power output direction of the second driving assembly 222 form an included angle, and under the driving action of the first driving assembly 212 and the second driving assembly 222, the printing and scraping assembly 224 can be larger in moving area relative to the screen plate, so that the applicability of the printing and scraping assembly 224 is improved. In the present embodiment, the angle between the power output direction of the first driving assembly 212 and the power output direction of the second driving assembly 222 is 90 °. Specifically, the first driving assembly 212 drives the fixing base 214 to move horizontally relative to the machine body 100, and the second driving assembly 222 drives the printing and scraping assembly 224 to move vertically, so that the position of the printing and scraping assembly 224 in the vertical direction can be flexibly adjusted, and the printing and scraping assembly 224 can move horizontally along with the fixing base 214, that is, the printing and scraping assembly 224 moves along the fixing base 214 in a direction parallel to the screen printing piece, and then the printing and scraping assembly 224 can print the pattern of the screen printing piece on the surface of the product. It is appreciated that in other embodiments, the angle between the power take off direction of first drive assembly 212 and the power take off direction of second drive assembly 222 is not limited to 90, such as 85, or other angular values.

As shown in fig. 2, in the present embodiment, the first driving assembly 212 is a cylinder assembly. Specifically, first cylinder subassembly includes cylinder body and telescopic link, and the cylinder body is connected with the telescopic link, and cylinder body drive telescopic link concertina movement. The cylinder body is connected to the fixing base 214, so that the first driving assembly 212 drives the fixing base 214 to move relative to the machine body 100. In other embodiments, the first driving assembly 212 may also be a motor screw 226b assembly or a cylinder assembly.

As shown in fig. 2, in one embodiment, the fixing base 214 includes a fixing base main body 214a and a rail base 214b, the rail base 214b is connected to the power shaft of the first driving assembly, and the fixing base main body 214a is slidably connected to the rail base 214b, so that the relative position between the rail base 214b and the fixing base main body 214a can be adjusted, and the connection position between the power shaft of the first driving assembly and the fixing base main body 214a can be adjusted. The second driving assembly 222 is mounted on the fixing base main body 214a, so that the mounting position of the second driving assembly 222 is not limited to be in the same vertical plane with the power shaft of the first driving assembly, and the applicability of the print head device 200 is improved.

As shown in fig. 2 and 3, in one embodiment, the second driving assembly 222 includes a lifting cylinder 222a, a guide rod holder 222b, and a fixing shaft 222 c. The lifting cylinder 222a is installed on the fixing base 214, and a power output end of the lifting cylinder 222a is connected with the guide rod base 222b, and the guide rod base 222b is slidably connected to the fixing base 214, so that the lifting cylinder 222a drives the guide rod base 222b to slide relative to the fixing base 214. The guide rod base 222b is connected with the fixing shaft 222c, and the guide rod base 222b is connected with the printing and scraping assembly 224 through the fixing shaft 222c, so that the printing and scraping assembly 224 is installed on the fixing base 214. The lifting cylinder 222a is installed on the fixing base body 214a, and the guide rod base 222b is slidably connected to the fixing base body 214 a. In this embodiment, the lifting cylinder 222a drives the guide rod seat 222b to slide linearly relative to the fixed seat 214.

As shown in fig. 3 to fig. 5, the print head mechanism 220 further includes an adjusting assembly 222d, and the power shaft of the lifting cylinder 222a is connected to the guide rod base 222b through the adjusting assembly 222d, so that the power output end of the lifting cylinder 222a drives the guide rod base 222b to slide relative to the fixing base 214 through the adjusting assembly 222 d. The adjusting assembly 222d is used for adjusting the distance between the power output shaft of the lifting cylinder 222a and the guide rod seat 222b to adapt to different adjusting requirements. In order to enable the power output end of the lifting cylinder to more stably drive the guide rod seat to slide relative to the fixed seat through the adjusting component, as shown in fig. 3, 5 and 6, the fixed seat 214 is provided with a mounting groove 2143 and a connecting guide hole 2245 which are communicated, the lifting cylinder is positioned in the mounting groove and connected with the fixed seat, the power shaft of the lifting cylinder is penetrated through the connecting guide hole and is connected with the fixed seat in a sliding manner, the adjusting component is positioned on the periphery of the fixed seat and is connected with the power shaft of the lifting cylinder, the power output end of the adjusting component is connected with the guide rod seat, the power shaft of the lifting cylinder 222a is connected with the guide rod seat 222b through the adjusting component 222d, and the power shaft of the lifting cylinder drives the adjusting component to move more stably. In this embodiment, the mounting groove and the connection guide hole are all opened on the fixing base main body.

As shown in fig. 5, the adjusting assembly 222d further includes a rotating cylinder 226a, a screw rod 226b and a screw pad 226c, the rotating cylinder 226a is fixedly installed on the power shaft of the lifting cylinder 222a, one end of the screw rod 226b is connected with the power shaft of the adjusting cylinder, the other end of the screw rod 226b is screwed with the screw pad 226c, the screw pad 226c is installed on the guide rod seat 222b, and when the rotating cylinder 226a drives the screw rod 226b to rotate, the screw rod 226b rotates relative to the screw pad 226c, so that the distance between the rotating cylinder 226a and the guide rod seat 222b is increased or decreased. In other embodiments, the rotary cylinder 226a may be replaced with a motor.

In this embodiment, the second driving assembly 222 is a driving assembly with a cylinder and a guide rod, and the printing and scraping assembly 224 is driven by the cylinder and the guide rod to move up and down relative to the fixing base body 214 a. It is understood that in other embodiments, the second driving assembly 222 may also be a motor, lead screw and nut cooperating driving assembly. Specifically, the second driving assembly 222 includes a driving motor, a screw rod and a nut, the driving motor is mounted on the holder main body 214a, one end of the screw rod 226b is connected to a power shaft of the driving motor, and the other end of the screw rod 226b is rotatably connected to the holder main body 214 a. The nut is sleeved on the screw rod 226b and is in threaded connection with the screw rod 226b, the nut is connected with the printing and scraping assembly 224, and when the driving motor drives the screw rod 226b to rotate, the screw rod 226b drives the nut and the printing and scraping assembly 224 to move up and down.

As shown in fig. 5, in one embodiment, the squeegee assembly 224 includes a clamping plate 224a, a clamping seat 224b and an ink returning scraper (not shown), the clamping plate 224a is connected to the power output end of the second driving assembly, the clamping seat 224b is connected to the clamping plate 224a, the ink returning scraper is fixed on the clamping seat 224b, and the ink returning scraper is used for printing the pattern of the stencil member on the surface of the product, so that the ink returning scraper is fixed on the clamping plate 224a through the clamping seat 224b and is connected to the power output end of the second driving assembly through the clamping plate 224 a. Further, cassette 224b includes cassette body 2242 and fixed plate 2244, and cassette body 2242 is connected with splint 224a, and cassette body 2242 and fixed plate 2244 are connected, returns black and scrapes fixed mounting on fixed plate 2244, makes back black and scrape and be connected with cassette 224 b. Can dismantle with fixed plate 2244 for realizing cassette body 2242 and be connected to scrape to ink return and maintain or change, further, cassette body 2242 and fixed plate 2244 joint are fixed, make cassette body 2242 and fixed plate 2244 can dismantle the connection. Specifically, cassette body 2242 has been seted up draw-in groove 2243, and in fixed plate 2244 card was gone into draw-in groove 2243, made fixed plate 2244 and cassette body 2242 joint fixed. For making the connection between cassette body 2242 and fixed plate 2244 more firm, further, cassette 224b still includes the setting element, cassette body 2242 still sets up the locating hole with draw-in groove 2243 intercommunication, the setting element is worn to locate in the locating hole and is connected with cassette body 2242, the setting element part be located draw-in groove 2243 and with fixed plate 2244 butt, make the connection between fixed plate 2244 and the cassette body 2242 more firm. In this embodiment, fixed plate 2244 is the plate body structure of form of buckling, avoids the installation to return black and scrapes the in-process and take place mechanical interference with the setting element, makes fixed plate 2244 be fixed in back black better and scrapes. Clamp plate 224a is coupled to stationary shaft 222c such that clamp plate 224a is coupled to the power output end of the second drive assembly.

As shown in fig. 5, further, the clamping plate 224a is movably connected to the fixed shaft 222c, so that the connecting position between the clamping plate 224a and the fixed shaft 222c is adjustable, and further, the angle at which the ink returning blade scrapes off the surface of the screen member is adjustable, thereby improving the convenience of the screen printer 10. Specifically, the clamping plate 224a is rotatably connected to the fixing shaft 222c, which is favorable for quickly adjusting the angle at which the ink returning scraper scrapes off the ink on the surface of the screen member, i.e. the action direction of the ink returning scraper scraping off the ink on the surface of the screen member is parallel to the screen member. As shown in fig. 7 and 8, the clamping plate 224a further includes a clamping plate main body 2241, a rotating hoop 2247 and a locking member (not shown), the clamping plate main body 2241 is connected with the clamping seat 224b, and the rotating hoop 2247 is sleeved on the fixing shaft 222c and rotatably connected with the fixing shaft 222 c. Meanwhile, referring to fig. 9, the rotary anchor ear 2247 is provided with a connecting hole 2248, a locking adjusting hole 2249 and an opening groove 2251, the connecting hole 2248 and the locking adjusting hole 2249 are communicated with the opening groove 2251, a part of the fixed shaft 222c is exposed to the outside through the opening groove 2251, the locking member is respectively inserted into the connecting hole 2248 and the locking adjusting hole 2249, the locking member is adjusted, the width of the opening groove 2251 is increased or decreased, the rotation tightness between the rotary anchor ear 2247 and the fixed shaft 222c is adjustable, and further the relative position between the clamping plate 224a and the fixed shaft 222c is adjustable. In this embodiment, the locking member is a stud or screw. The retaining member is located connecting hole 2248 and rotates with rotatory staple bolt 2247 to be connected. The retaining member still is located locking regulation hole 2249, and the tip that the retaining member is located locking regulation hole 2249 is spiro union portion, locking regulation hole 2249 for the screw hole and with retaining member looks adaptation, when the elasticity retaining member, the retaining member is adjustable with the spiro union position of locking regulation hole 2249, makes open slot 2251's width increase or reduction. Specifically, the cassette body is connected with the clamp plate main body 2241. The cassette body and the splint main body 2241 are integrally formed, so that the cassette body is firmly connected with the splint main body 2241. In other embodiments, the clamp body and the main clamp 2241 may be formed separately and connected together by welding.

As shown in fig. 2, in one embodiment, the positioning assembly 310 includes a fixing frame 312, a first clamping member 314 and a second clamping member 316, the fixing frame 312 is connected to the machine body 100, the first clamping member 314 and the second clamping member 316 are both slidably disposed on the fixing frame 312, the first clamping member 314 and the second clamping member 316 are disposed opposite to each other, and the first clamping member 314 and the second clamping member 316 are jointly used for positioning the screen plate member, so that the screen plate member is fixed and positioned on the fixing frame 312. Because the first clamping member 314 and the second clamping member 316 are slidably disposed on the fixing frame 312, the distance between the first clamping member 314 and the second clamping member 316 is adjustable to adapt to fixing and positioning screen printing plate members with different specifications, thereby improving the applicability of the positioning assembly 310.

As shown in fig. 7 and 8, further, the first clamping member 314 includes a first sliding seat 314a, a first bracket seat 314b, a first longitudinal adjustment rod 314c and a first clamping member main body 314d, the first sliding seat 314a is slidably connected to the fixed bracket 312, the first bracket seat 314b is slidably connected to the first sliding seat 314a, and an included angle exists between the sliding direction of the first sliding seat 314a relative to the first supporting seat 314b and the sliding direction of the first sliding seat 314a relative to the supporting frame 312, the first longitudinal adjusting rod 314c is rotatably connected to the first sliding seat 314a, the first longitudinal adjusting rod 314c is provided with a first adjusting screw-threaded part, the first supporting seat 314b is provided with a first adjusting screw hole, the first adjusting screw-threaded part is positioned in the first adjusting screw hole and is in screw connection with the first supporting seat 314b, so that the screw-threaded position between the first supporting seat 314b and the first longitudinal adjusting rod 314c is adjustable. The first clamping member main body 314d is connected to the first bracket seat 314b, so that the first clamping member main body 314d can realize the adjustment of the relative position with the machine body 100 through the sliding among the first bracket seat 314b, the first sliding seat 314a and the bracket 312. In the present embodiment, an angle between a sliding direction of the first sliding seat 314b relative to the first sliding seat 314a and a sliding direction of the first sliding seat 314a relative to the fixed frame 312 is 90 °, and in other embodiments, an angle between a sliding direction of the first sliding seat 314b relative to the first sliding seat 314a and a sliding direction of the first sliding seat 314a relative to the fixed frame 312 is not limited to 90 °, and may be 85 ° or 95 °.

As shown in fig. 7, the first clamping member main body 314d further includes a first clamping block 3142, a first locking nut 3144 and a first transverse adjusting rod 3146, the first locking nut 3144 is slidably connected to the first bracket base 314b, the first locking nut 3144 is provided with a first threaded hole 3145, the first transverse adjusting rod 3146 is rotatably connected to the first bracket base 314b, and the first transverse adjusting rod 3146 is inserted through the first threaded hole 3145 and is threaded with the first locking nut 3144. When the first lateral adjustment lever 3146 is rotated, the first locking nut 3144 slides relative to the first bracket base 314b, and the first clamping block 3142 is coupled to the first locking nut 3144, so that the relative position of the first clamping block 3142 and the first bracket base 314b is adjustable. In this embodiment, the sliding direction of the first sliding seat 314b relative to the first sliding seat 314a, the sliding direction of the first sliding seat 314a relative to the fixing frame 312, and the sliding direction of the first locking nut 3144 relative to the first bracket seat 314b are perpendicular to each other two by two, so that the first clamping block 3142 moves in a three-dimensional space relative to the machine body 100, thereby improving the convenience of the positioning assembly 310. The sliding direction of the first holder 314b with respect to the first sliding holder 314a is set to the X-axis direction, the sliding direction of the first sliding holder 314a with respect to the holder 312 is set to the Z-axis direction, and the sliding direction of the first lock nut 3144 with respect to the first holder 314b is set to the Y-axis direction. The first driving component drives the fixed seat to move parallel to the Y-axis direction relative to the machine body, and the second driving component drives the printing and scraping component to move parallel to the Z-axis direction.

As shown in fig. 4 and 7, further, the second clamping member 316 includes a second sliding seat 316a, a second bracket seat 316b, a second longitudinal adjustment rod 316c and a second clamping member main body 316d, the second sliding seat 316a is slidably connected to the fixed frame 312, the second bracket seat 316b is slidably connected to the second sliding seat 316a, an included angle exists between the sliding direction of the second support base 316b relative to the second sliding base 316a and the sliding direction of the second sliding base 316a relative to the fixed frame 312, the second longitudinal adjusting rod 316c is rotatably connected to the second sliding base 316a, the second longitudinal adjusting rod 316c is provided with a second adjusting threaded portion, the second support base 316b is provided with a second adjusting threaded hole, and the second adjusting threaded portion is located in the second adjusting threaded hole and is in threaded connection with the second support base 316b, so that the threaded connection position between the second support base 316b and the second longitudinal adjusting rod 316c is adjustable. The second clamping member main body 316d is connected to the second bracket base 316b, so that the second clamping member main body 316d can be adjusted relative to the machine body 100 through the sliding among the second bracket base 316b, the second sliding base 316a and the fixed bracket 312. In the present embodiment, an angle between a sliding direction of the second bracket holder 316b relative to the second sliding holder 316a and a sliding direction of the second sliding holder 316a relative to the fixed bracket 312 is 90 °, and in other embodiments, an angle between a sliding direction of the second bracket holder 316b relative to the second sliding holder 316a and a sliding direction of the second sliding holder 316a relative to the fixed bracket 312 is not limited to 90 °, and may be 85 ° or 95 °.

As shown in fig. 4, further, the second clamping member body 316d includes a second clamping block 3162, a second locking nut 3164 and a second transverse adjustment rod 3166, the second locking nut 3164 is slidably connected to the second support base 316b, the second locking nut 3164 is provided with a second screw hole (not shown), the second transverse adjustment rod 3166 is rotatably connected to the second support base 316b, and the second transverse adjustment rod 3166 is inserted through the second screw hole and is screwed with the second locking nut 3164. When the second transverse adjustment lever 3166 is rotated, the second locking nut 3164 slides relative to the second supporter seat 316b, and the second clamping block 3162 is coupled to the second locking nut 3164, so that the relative position of the second clamping block 3162 and the second supporter seat 316b is adjustable. In this embodiment, the sliding direction of the second support base 316b relative to the second sliding base 316a, the sliding direction of the second sliding base 316a relative to the fixing frame 312, and the sliding direction of the second locking nut 3164 relative to the second support base 316b are perpendicular to each other two by two, so that the second clamping block 3162 moves in a three-dimensional space relative to the machine body 100, thereby improving the convenience of the positioning assembly 310. The sliding direction of the second holder 316b relative to the second sliding holder 316a is parallel to the X-axis direction, the sliding direction of the second sliding holder 316a relative to the fixed frame 312 is parallel to the Z-axis direction, and the sliding direction of the second lock nut 3164 relative to the second holder 316b is parallel to the Y-axis direction.

As shown in fig. 4 and 10, in one embodiment, the reciprocating drive assembly 410 includes a drive motor (not shown), a lead screw (not shown) and a nut 412, and the drive motor is mounted to the machine body 100. One end of the screw rod is connected with a power shaft of the driving motor, the other end of the screw rod is rotatably connected with the machine body 100, the nut is sleeved on the screw rod and is in threaded connection with the screw rod, and the nut is connected to the sliding seat 420, when the driving motor drives the screw rod to rotate relative to the machine body 100, the screw rod drives the nut to rotate, the nut drives the sliding seat 420 to slide relative to the machine body 100, and then the sliding seat 420 is driven to slide relative to the machine body 100 in a reciprocating mode.

As shown in fig. 4, in one embodiment, the number of the discharging mechanisms 500 is two, so that the two discharging mechanisms 500 can discharge alternately, the reciprocating action of the reciprocating driving assembly 410 is simple, and uninterrupted printing can be realized. It is understood that in other embodiments, the number of the discharging mechanisms 500 is not limited to two, but may be more than three.

As shown in fig. 11 and 12, in one embodiment, the feeding mechanism 600 is used for sucking and grabbing the product to be printed on the drop feed mechanism 500 and conveying the product to be printed to a position corresponding to the screen piece, so that the feeding mechanism 600 can grab the product on the drop feed mechanism 500 more conveniently and quickly.

As shown in fig. 8 and 12, in one embodiment, the feed mechanism 600 includes a rotary drive assembly 610, a rotary frame 620, a suction duct 630, a suction inner tube 640, and a plurality of outer suction plates 650. The rotation driving assembly 610 is installed on the machine body 100, a power shaft of the rotation driving assembly 610 is connected with the rotation frame 620, and the rotation frame 620 is respectively rotatably connected to the machine body 100 and the air suction pipe 630, so that the rotation driving assembly 610 drives the rotation frame 620 to rotate relative to the machine body 100. Referring to fig. 13, the suction inner cylinder 640 is connected to the rotating frame 620, the suction inner cylinder 640 is provided with a suction cavity 642 and a plurality of suction holes 644, and the plurality of suction holes and the suction pipe 630 are both communicated with the suction cavity. The air suction pipe 630 is used for sucking air in the air suction cavity, and a plurality of air suction holes are arranged at intervals along the circumferential direction of the air suction inner cylinder 640. A plurality of outer air suction plates 650 are arranged on the rotating frame 620 at intervals, each outer air suction plate 650 is communicated with a corresponding air suction hole, and each outer air suction plate 650 is used for sucking and grabbing a product to be printed on the material placing mechanism 500 and conveying the product to be printed to a position corresponding to the screen piece. In this embodiment, the feed mechanism 600 is a cylindrical adsorption mechanism. The feed mechanism 600 is located below the stencil sheet and the print head device 200 is located above the stencil sheet. Referring to fig. 8 again, in the present embodiment, each outer suction plate is provided with a plurality of suction holes 652, and the plurality of suction holes are all communicated with the suction holes. The outer air suction plates 650 are circumferentially spaced along the rotating frame 620, so that each outer air suction plate 650 can suck and grab a product to be printed on the material discharge mechanism 500 and convey the product to be printed to a position corresponding to the screen piece in the process that the rotating drive assembly 610 drives the rotating frame 620 to rotate relative to the machine body 100. The feeding end of the feeding mechanism 600 and the discharging mechanism 700 are both sides of the rotation center of the rotating frame 620, respectively.

As shown in fig. 11 and 12, the air suction inner cylinder 640 is coaxially disposed with the rotating frame 620, so that the air suction inner cylinder 640 rotates to any angle along with the rotating frame 620 to uniformly suck air into the plurality of outer air suction plates 650, thereby improving the air suction uniformity of the plurality of outer air suction plates 650. Thus, when each outer suction plate 650 rotates to the position of the feeding end of the feeding mechanism 600, i.e. the position adjacent to the discharging mechanism 500, along with the rotating frame 620, it can suck and grab the product to be printed on the discharging mechanism 500, and transport the product to be printed to the position corresponding to the screen piece, and transport the printed product to the discharging mechanism 700. Specifically, the number of the outer suction plates 650 is four, and four outer suction plates 650 are spaced apart from each other in the circumferential direction of the rotating frame 620, that is, the included angle between two adjacent outer suction plates 650 in the circumferential direction of the rotating frame 620 is 90 °. Every rotatory a week of swivel mount 620 like this can carry out the material loading printing to four work pieces in proper order, and transport in proper order after the printing and automatic unloading on unloading mechanism 700. In one embodiment, as shown in fig. 11, each outer suction plate 650 is transported with the rotary frame 620 rotating 90 ° from the feeding end of the feeding mechanism 600 to a position directly below the screen member, i.e. the printing position, to print the product, and after the product is printed, is transported with the rotary frame 620 rotating 90 ° further from the printing position to the discharging end, i.e. a position adjacent to the discharging mechanism 700, to discharge the product.

As shown in fig. 8 and 12, the rotating frame 620 further includes a first end cap 622, a second end cap 624, and a plurality of connecting cover plates 626, the first end cap 622 is disposed in parallel with the second end cap 624, each connecting cover plate 626 is disposed between the first end cap 622 and the second end cap 624, each connecting cover plate 626 is connected to the first end cap 622 and the second end cap 624, an outer suction plate 650 is disposed between two adjacent connecting cover plates 626, and two ends of the outer suction plate 650 are connected to the first end cap 622 and the second end cap 624, respectively, so as to jointly enclose a receiving cavity 623. The suction inner cylinder 640 is located in the accommodating chamber 623, and both ends of the suction inner cylinder 640 are connected to the first and second end caps 622 and 624, respectively. The first end cap 622 is provided with a first through hole 622a, the second end cap 624 is provided with a second through hole 624a, and the air suction pipe 630 is respectively arranged in the first through hole 622a and the second through hole 624a, so that the air suction pipe 630 is respectively connected with the first end cap 622 and the second end cap 624 in a rotating manner.

Referring again to fig. 1, in one embodiment, the discharging mechanism 700 includes a support 710 and a tray 720, the support 710 is connected to the machine body 100, the support 710 supports the fixed tray 720, the tray 720 is disposed adjacent to the discharging end of the feeding mechanism 600, and the end of the tray 720 adjacent to the discharging end of the feeding mechanism 600 extends in the same direction as the tangential direction of the rotating frame 620, so that when the outer suction plate 650 rotates with the rotating frame 620 to the end corresponding to the discharging end of the feeding mechanism 600, the product is automatically discharged through the tray 720. Further, the tray 720 includes a guide plate 721 and an inclined plate 723 connected to each other, the guide plate extends to an end portion adjacent to the discharging end of the feeding mechanism 600, and the extending direction of the guide plate is the same as the tangential direction of the rotating frame 620 adjacent to the guide plate, when the outer suction plate 650 conveys the printed product to a position corresponding to the guide plate along with the rotating frame 620, the product is discharged under the guiding action of the guide plate, and automatic discharging is completed through the inclined plate, so that automatic discharging of the product through the tray 720 is realized. In order to enable the product to better slide to the inclined plate through the guide plate, furthermore, the fillet between the guide plate and the inclined plate is excessive, so that the product can better slide to the inclined plate through the guide plate.

As shown in fig. 10, each discharging mechanism 500 further includes a bottom plate 510, a first guide rod 520, a supporting plate 530, a lifting driving member (not shown), a second guide rod 550 and a supporting plate 560, the bottom plate 510 is disposed on the sliding base 420, the first guide rod 520 is connected to the bottom plate 510, the supporting plate 530 is slidably connected to the first guide rod 520, and the supporting plate 530 is connected to a power shaft of the lifting driving member, such that the lifting driving member drives the supporting plate 530 to slide relative to the first guide rod 520, and further the supporting plate 530 is far away from or close to the bottom plate 510. The supporting plate 530 is provided with a through hole, the second guide rod 550 penetrates through the through hole, the supporting plate 560 is provided with a positioning hole, and the second guide rod 550 penetrates through the through hole and the positioning hole respectively. The supporting plate 560 is located on a side of the tray 530 facing away from the bottom plate 510, and the supporting plate 560 is used for supporting and positioning the product. When the lifting driving member drives the supporting plate 530 to slide relative to the first guide rod 520, the supporting plate 560 is driven by the supporting plate 530 to move up and down, so that the supporting plate 560 conveys the product to a position adjacent to the loading end of the loading mechanism 600. When each discharging mechanism 500 moves along with the sliding base 420 to a position corresponding to the feeding end of the feeding mechanism 600, the lifting driving member of the discharging mechanism 500 operates, so that the lifting driving member drives the supporting plate 530 to slide relative to the first guide rod 520, and the supporting plate 530 drives the supporting plate 560 to move up and down, so that the supporting plate 560 conveys the product to the feeding end adjacent to the feeding mechanism 600.

Referring again to fig. 1, in one embodiment, the screen printing machine 10 further includes an electric cabinet assembly 800, the electric cabinet assembly 800 is disposed on the machine body 100, and the electric cabinet assembly 800 is electrically connected to the print head device 200, the reciprocating driving assembly 410, the rotary driving assembly 610 and a control terminal of each discharging mechanism 500, respectively, so as to realize automatic printing on the product. In this embodiment, the electronic control box assembly 800 is electrically connected to the first drive assembly, the second drive assembly, the reciprocating drive assembly 410, the rotary drive assembly 610, and the control terminal of each drop out mechanism 500, respectively.

1. because the slide seat 420 is connected with the power output end of the reciprocating drive assembly 410, the reciprocating drive assembly 410 drives the slide seat 420 to slide in a reciprocating manner relative to the machine body 100, at least two discharging mechanisms 500 are arranged on the slide seat 420 side by side, each discharging mechanism 500 moves relative to the machine body 100 along with the slide seat 420, when one discharging mechanism 500 moves to a position corresponding to the feeding end of the feeding mechanism 600 along with the slide seat 420, the discharging mechanism 500 conveys a product to the feeding end adjacent to the feeding mechanism 600, the feeding mechanism 600 grabs the product to be printed on the discharging mechanism 500 and conveys the product to be printed to a position corresponding to a screen printing piece, and the printing head device 200 can print the pattern of the screen printing piece on the surface of the product; after the printing head device 200 prints the pattern of the stencil sheet on the surface of the product, the feeding mechanism 600 transports the printed product to the discharging mechanism 700, so that the printed product is automatically discharged through the feeding mechanism 600, thereby realizing the printing of the product;

2. because the number of the discharging mechanisms 500 is at least two, and each discharging mechanism 500 is used for placing a product to be printed, when one discharging mechanism 500 moves to a position corresponding to the feeding end of the feeding mechanism 600 along with the sliding seat 420, the discharging mechanism 500 conveys the product to the feeding end adjacent to the feeding mechanism 600, so that the feeding mechanism 600 grabs the product to be printed on the discharging mechanism 500, and conveys the product to be printed to a position corresponding to the screen plate, so that the printing head device 200 can print the pattern of the screen plate on the surface of the product, while the other discharging mechanism 500 can discharge the product, and each discharging mechanism 500 reciprocates relative to the machine body 100 along with the sliding seat 420, thereby realizing uninterrupted printing and improving the printing efficiency of the product.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A screen printing machine, comprising:

a body;

the printing head device is arranged on the machine body;

the screen arm mechanism comprises a positioning assembly and a screen printing plate piece, the positioning assembly is arranged on the machine body and is used for connecting and positioning the screen printing plate piece, the screen printing plate piece is arranged corresponding to the printing head device, and the printing head device is used for printing the pattern of the screen printing plate piece on the surface of a product;

the feeding end of the blanking mechanism is arranged close to the blanking end of the feeding mechanism, and the feeding mechanism is also used for conveying the printed product to the blanking mechanism;

the feeding mechanism comprises a rotary driving assembly, a rotary frame, an air suction pipe, an air suction inner cylinder and a plurality of outer air suction plates; the rotary driving assembly is mounted on the machine body, a power shaft of the rotary driving assembly is connected with the rotary frame, the rotary frame is respectively connected with the machine body and the air suction pipe in a rotating mode, the air suction inner cylinder is connected with the rotary frame, an air suction cavity and a plurality of air suction holes are formed in the air suction inner cylinder, the air suction holes and the air suction pipe are communicated with the air suction cavity, the air suction pipe is used for sucking air in the air suction cavity, and the air suction holes are arranged at intervals along the circumferential direction of the air suction inner cylinder; the outer air suction plates are arranged on the rotating frame at intervals, each outer air suction plate is communicated with the corresponding air suction hole, and each outer air suction plate is used for adsorbing, grabbing the product to be printed on the material placing mechanism and conveying the product to be printed to the position corresponding to the screen printing piece.

2. The screen printing machine of claim 1, wherein the print head arrangement includes a translation drive mechanism and a print head mechanism;

3. The screen printing machine of claim 2, wherein the fixing base includes a fixing base main body and a guide rail base, the guide rail base is connected to the power shaft of the first driving assembly, the fixing base main body is slidably connected to the guide rail base, and the second driving assembly is mounted to the fixing base main body.

4. The screen printing machine according to claim 2, wherein the second driving assembly comprises a lifting cylinder, a guide rod seat and a fixed shaft, the lifting cylinder is mounted on the fixed seat, and a power output end of the lifting cylinder is connected with the guide rod seat; the guide rod seat is connected with the fixed seat in a sliding mode, the guide rod seat is connected with the fixed shaft, and the guide rod seat is connected with the printing and scraping assembly through the fixed shaft.

5. The screen printing machine according to claim 2, wherein the squeegee assembly includes a clamping plate, a clamping seat and an ink return scraper, the clamping plate is connected to the power output end of the second driving assembly, the clamping seat is connected to the clamping plate, the ink return scraper is fixed to the clamping seat, and the ink return scraper is used for printing the pattern of the screen member on the surface of the product.

6. The screen printing machine according to claim 1, wherein the positioning assembly includes a fixing frame, a first clamping member and a second clamping member, the fixing frame is connected to the machine body, the first clamping member and the second clamping member are both slidably disposed on the fixing frame, the first clamping member and the second clamping member are disposed opposite to each other, and the first clamping member and the second clamping member are commonly used for positioning the screen plate member.

7. The screen printing machine according to claim 1, wherein the reciprocating drive assembly includes a drive motor, a lead screw and a nut, the drive motor is mounted on the machine body, one end of the lead screw is connected with a power shaft of the drive motor, the other end of the lead screw is rotatably connected with the machine body, the nut is sleeved on the lead screw and is in threaded connection with the lead screw, and the nut is connected to the slide carriage.

8. The screen printing machine of claim 1, wherein the number of drop mechanisms is two.

9. The screen printing machine according to any of claims 1 to 8, wherein the blanking mechanism includes a support member and a tray, the support member is connected to the machine body, the support member supports and fixes the tray, the tray is disposed adjacent to a blanking end of the loading mechanism, and an end of the tray adjacent to the blanking end of the loading mechanism extends in the same direction as a tangential direction of the rotary frame.

10. The screen printing machine of claim 9, further comprising an electrical cabinet assembly disposed on the machine body, the electrical cabinet assembly being electrically connected to the print head device, the reciprocating drive assembly, the rotary drive assembly, and the control end of each of the drop mechanisms, respectively.