Front-end printing conveying table

Abstract

The utility model relates to the technical field of trademark printing, in particular to a front-end printing conveying table which comprises a bottom support (1) and a top support (2). A roller way structure and a positioning jacking structure are arranged on the bottom bracket (1); the positioning jacking structure is connected with a control assembly; a guide rail structure is arranged on the top bracket (2); a printing assembly and a drying assembly are arranged on the guide rail structure. The glass is arranged between the positioning jacking structure and the printing assembly; the positioning jacking structure is connected with a control assembly; according to the device, automatic sheet feeding and manual sheet feeding can be flexibly switched, and the device can adapt to production of glass of different specifications; and meanwhile, the printing assembly and the drying assembly of the device are connected to the guide rail structure, rapid drying after mark printing can be achieved, and follow-up drying energy consumption is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of trademark printing, specifically, the utility model relates to a front-end printing conveying table. BACKGROUND

[0002] Automobile glass deep processing factory needs to produce huge models, some special specifications and small order quantity products or automatic production line cannot produce product types and need manual piece feeding, and execute semi-automatic operation, and the current trademark printing machine cannot realize automatic and manual piece feeding switching, and the current printing machine cannot realize rapid drying after printing, and the subsequent drying energy consumption is high.

[0003] The applicant finds that the Chinese patent document with publication number 216373762U discloses a full-automatic plane glass trademark printing machine on April 26, 2022, which comprises a table support mechanism, a transmission mechanism, a positioning mechanism, a printing mechanism and an outer protective cover, the transmission mechanism is installed in the table support mechanism, a plurality of positioning mechanisms are arranged on the transmission mechanism, support plates higher than the table are arranged on both sides of the table support mechanism, the printing mechanism is installed on the support plates, and the outer protective cover is installed above the table support mechanism; the table support mechanism is composed of a frame body and a table, the table is arranged above the frame body, and a vortex air pump is arranged on one side in the frame body; the device cannot solve the above technical problems.

[0004] Therefore, in order to improve or solve the above at least one problem, it is necessary to provide a front-end printing conveying table which can realize switching of automatic and manual piece feeding and rapid drying after printing. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a front-end printing conveying table which can realize switching of automatic and manual piece feeding and rapid drying after printing.

[0006] In order to solve the above technical problems, the utility model adopts the technical scheme that a front-end printing conveying table comprises a bottom support and a top support; a roller structure and a positioning and lifting structure are arranged on the bottom support; the positioning and lifting structure is connected with a control assembly; a guide rail structure is arranged on the top support; a printing assembly and a drying assembly are respectively arranged on the guide rail structure; and glass is arranged between the positioning and lifting structure and the printing assembly.

[0007] The roller structure comprises a conveying roller; the positioning and lifting structure comprises an ejection frame; the ejection frame is arranged between adjacent conveying rollers; an ejection frame guide rail and a lifting cylinder are respectively arranged on the bottom support; the piston rod of the lifting cylinder is connected with the ejection frame; an ejection frame sliding block is connected to the ejection frame; and the ejection frame sliding block is connected to the ejection frame guide rail.

[0008] The top of the bottom support is provided with mounting bearings; the two ends of the conveying roller are connected in the mounting bearings respectively; the end of the conveying roller is provided with a driven wheel; the bottom support is respectively provided with a guide wheel and a conveying motor; the conveying motor is connected with a synchronous belt; the synchronous belt is arranged on the driven wheel and the guide wheel respectively.

[0009] The bottom of the top support is provided with a slide rail support; the slide rail support is respectively provided with a slide rail and a slide rail motor; the slide rail motor is connected with a mounting sliding block; the mounting sliding block is arranged on the slide rail; the guide rail structure comprises a printing guide rail; the printing guide rail is arranged at the bottom of the slide rail, and the printing guide rail is connected with the mounting sliding block.

[0010] The end of the printing guide rail is provided with a first motor; the printing guide rail is provided with a first screw rod; the first motor is connected with the end of the first screw rod, and the first screw rod is connected with a printing sliding plate; the printing assembly and the drying assembly are connected at the bottom of the printing sliding plate.

[0011] The printing assembly comprises a screen locking air cylinder and a printing servo motor; the screen locking air cylinder is connected with a screen plate; the printing servo motor is respectively connected with an ink scraping knife and an ink returning knife; the drying assembly comprises an infrared heater, an air blower and a thermocouple.

[0012] The two sides of the slide rail support are respectively provided with fixed seats; the fixed seats are connected with lead screws; the lead screws are connected with sliding blocks; the bottom of the slide rail is provided with a horizontal guide rail; the horizontal guide rail is connected with the sliding blocks; the end of the horizontal guide rail is provided with a second motor; the horizontal guide rail is provided with a second screw rod; the second screw rod is connected with a horizontal positioning seat;

[0013] The bottom of the slide rail support is provided with a vertical guide rail; the end of the vertical guide rail is provided with a third motor; the vertical guide rail is provided with a third screw rod; the third screw rod is connected with a vertical positioning seat.

[0014] The top of the ejection frame is provided with a positioning column; the bottom of the horizontal positioning seat and the vertical positioning seat is provided with a positioning block; the glass is arranged between the positioning column and the positioning block.

[0015] The control assembly comprises a control electric box; the bottom support is provided with a sheet-out photoelectric switch, a sheet-in photoelectric switch and an operation touch screen; the sheet-out photoelectric switch and the sheet-in photoelectric switch are arranged on the two sides of the bottom support respectively; the sheet-out photoelectric switch, the sheet-in photoelectric switch, the conveying motor, the lifting air cylinder, the slide rail motor, the first motor, the printing servo motor, the thermocouple, the second motor, the third motor and the operation touch screen are connected with the control electric box; the control electric box is connected with a foot switch.

[0016] The operation touch screen comprises a selection knob and an automatic starting button; and the control electric box is provided with a PLC.

[0017] The beneficial effects of the present application are:

[0018] The present application is provided with a positioning and lifting structure on the roller structure; the positioning and lifting structure is connected with a control assembly; when the product model is not suitable for automatic sheet feeding, the staff controls the positioning and lifting structure to rise through the control assembly; the staff manually carries the glass to the positioning and lifting structure for subsequent printing operation; when the product model is suitable for automatic sheet feeding, the front-end equipment automatically feeds the glass to the roller structure, and the control assembly controls the positioning and lifting structure to automatically rise, so as to realize automatic sheet feeding of the device; thus, the device can realize flexible switching between automatic sheet feeding and manual sheet feeding, and can adapt to the production of different specifications of glass.

[0019] Meanwhile, the printing assembly and the drying assembly of the device are connected to the guide rail structure, so that the device can realize rapid drying after printing and save subsequent drying energy consumption; the device is also provided with a touch screen which can store a formula, and a printing machine front-end conveying table which can directly call the formula during production of the same model product, so that the device has strong practicability in the automotive glass deep processing industry. BRIEF DESCRIPTION OF DRAWINGS

[0020] The specific embodiments of the present application will be further described in detail below in combination with the drawings, in which:

[0021] Figure 1 FIG. 1 is a structural schematic view of the front-end printing conveying table of the present application.

[0022] Figure 2 FIG. 4 is a structural schematic view of the bottom support of the front-end printing conveying table of the present application.

[0023] Figure 3 FIG. 5 is a structural schematic view of the top support of the front-end printing conveying table of the present application.

[0024] Figure 4 FIG. 6 is a structural schematic view of the drying assembly of the front-end printing conveying table of the present application.

[0025] Figure 5 FIG. 7 is a structural schematic view of the printing assembly of the front-end printing conveying table of the present application.

[0026] Figure 6 FIG. 8 is a structural schematic view of the operation touch screen of the front-end printing conveying table of the present application.

[0027] The marks in the above drawings are:

[0028] The marks in the drawings are:

[0029] 1, bottom support,

[0030] 2, top support,

[0031] 3. Conveyor roller, 301. Install bearing, 302. Driven pulley, 303. Guide pulley, 304. Conveyor motor, 305. Synchronous belt,

[0032] 4. Ejector rack, 401. Ejector rack guide rail, 402. Lifting cylinder, 403. Ejector rack slider,

[0033] 5. Slide rail bracket, 501. Slide rail, 502. Install slider, 503. Slide rail motor,

[0034] 6. Printing guide rail, 601, printing slide plate,

[0035] 7. Net locking cylinder, 701, printing servo motor,

[0036] 8. Infrared heater, 801. Blower, 802. Thermocouple,

[0037] 9. Fixed seat, 901. Screw rod, 902. Slider, 903. Horizontal guide rail, 904. Second motor, 905. Horizontal positioning seat,

[0038] 10. Vertical guide rail, 101. Third motor, 102. Vertical positioning seat,

[0039] 11. Positioning column, 111. Positioning block,

[0040] 12. Control electric box, 121. Film discharge photoelectric switch, 122. Film feed photoelectric switch, 123. Operation touch screen, 124. Foot switch,

[0041] 13. Select knob, 131. Auto start button. DETAILED DESCRIPTION

[0042] The following is a further detailed description of the specific implementation methods of the present invention by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and to facilitate its implementation.

[0043] Figure 1 The front-end printing conveyor platform shown includes a bottom bracket 1 and a top bracket 2; a roller structure and a positioning lifting structure are provided on the bottom bracket 1; the positioning lifting structure is connected to a control component; a guide rail structure is provided on the top bracket 2; a printing component and a drying component are respectively provided on the guide rail structure; and glass is provided between the positioning lifting structure and the printing component.

[0044] The present application is provided with a positioning and lifting structure on the roller structure; the positioning and lifting structure is connected with a control assembly; when the product model is not suitable for automatic sheet feeding, the staff controls the positioning and lifting structure to rise through the control assembly; the staff manually carries the glass to the positioning and lifting structure for subsequent printing operation; when the product model is suitable for automatic sheet feeding, the front-end equipment automatically feeds the glass to the roller structure, and the control assembly controls the positioning and lifting structure to automatically rise, realizing automatic sheet feeding of the device; thereby the device can realize flexible switching between automatic sheet feeding and manual sheet feeding, and can adapt to the production of different specifications of glass; meanwhile, the printing assembly and the drying assembly of the device are connected on the guide rail structure, which can realize rapid drying after printing and save subsequent drying energy consumption.

[0045] The roller structure comprises conveying rollers 3; the positioning and lifting structure comprises an ejection frame 4; the ejection frame 4 is arranged between adjacent conveying rollers 3; the bottom support 1 is respectively provided with an ejection frame guide rail 401 and a lifting cylinder 402; the piston rod of the lifting cylinder 402 is connected with the ejection frame 4; the ejection frame 4 is connected with an ejection frame sliding block 403; and the ejection frame sliding block 403 is connected on the ejection frame guide rail 401.

[0046] The top of the bottom support 1 is provided with a plurality of conveying rollers 3; the ejection frame 4 is arranged in the gap between adjacent conveying rollers 3; the ejection frame 4 is a square frame; the lifting cylinder 402 is fixedly connected on the bottom support 1; the ejection frame guide rail 401 is fixedly connected on the bottom support 1, and the ejection frame guide rail 401 is arranged on both sides of the lifting cylinder 402; the piston rod of the lifting cylinder 402 is fixedly connected on the bottom of the ejection frame 4, so as to drive the ejection frame 4 to move in the vertical direction; the ejection frame sliding block 403 is fixedly connected on both ends of the bottom of the ejection frame 4; the ejection frame sliding block 403 is provided with a U-shaped clamping groove, so that the ejection frame sliding block 403 can be clamped on the ejection frame guide rail 401 and can move in the vertical direction along the ejection frame guide rail 401; the ejection frame sliding block 403 cooperates with the ejection frame guide rail 401 to realize vertical positioning and guiding of the ejection frame 4.

[0047] The top of the bottom support 1 is provided with a mounting bearing 301; both ends of the conveying roller 3 are connected in the mounting bearing 301; the end of the conveying roller 3 is provided with a driven wheel 302; the bottom support 1 is respectively provided with a guide wheel 303 and a conveying motor 304; the conveying motor 304 is connected with a synchronous belt 305; the synchronous belt 305 is arranged on the driven wheel 302 and the guide wheel 303.

[0048] The bottom support 1 is fixedly connected with mounting bearings 301 on both sides of the top; the two ends of the conveying roller 3 are connected in the mounting bearings 301, so that the conveying roller 3 can rotate flexibly in the mounting bearings 301; the bottom support 1 is connected with 12 conveying rollers 3, the number of the conveying rollers 3 can be increased or decreased arbitrarily, and the structure has high inclusiveness; one end of the conveying roller 3 is fixedly connected with a driven wheel 302; the side of the bottom support 1 is connected with a plurality of guide wheels 303; the conveying motor 304 is a servo motor, and the conveying motor 304 is connected with a frequency converter, and the running speed is adjusted according to actual needs; the synchronous belt 305 is connected on the conveying motor 304, the driven wheel 302 and the guide wheel 303 at the same time; so that the conveying motor 304 can drive each conveying roller 3 to rotate by being started.

[0049] The bottom of the top support 2 is provided with a slide rail support 5; the slide rail support 5 is respectively provided with a slide rail 501 and a slide rail motor 503; the slide rail motor 503 is connected with a mounting slide block 502; the mounting slide block 502 is arranged on the slide rail 501; the guide rail structure comprises a printing guide rail 6; the printing guide rail 6 is arranged at the bottom of the slide rail 501, and the printing guide rail 6 is connected with the mounting slide block 502.

[0050] The slide rail support 5 is fixedly connected at both ends of the bottom of the top support 2; the slide rail support 5 is fixedly connected with two slide rails 501; the slide rail motor 503 is arranged between the two slide rails 501; the top of the slide rail 501 is provided with the mounting slide block 502; the mounting slide block 502 has a U-shaped structure; the mounting slide block 502 is clamped at the top of the slide rail 501 and can slide flexibly along the slide rail 501; the printing guide rail 6 is arranged at the bottom of the slide rail 501; and the top of the printing guide rail 6 is fixedly connected with the mounting slide block 502; the driving rod of the slide rail motor 503 is fixedly connected with the mounting slide block 502; so as to drive the printing guide rail 6 to move along the slide rail 501.

[0051] The printing guide rail 6 is provided with a first motor at the end; the first screw is arranged in the printing guide rail 6; the first motor is connected with the end of the first screw, and the first screw is connected with a printing slide plate 601; the printing assembly and the drying assembly are connected at the bottom of the printing slide plate 601.

[0052] The first motor can drive the first screw to rotate; the printing slide plate 601 is arranged at the bottom of the printing guide rail 6; the printing slide plate 601 is provided with a limiting slide block; the limiting slide block is provided with a threaded hole; the limiting slide block is arranged in the printing guide rail 6, and the first screw is threadedly connected in the threaded hole, so as to drive the printing slide plate 601 to move along the printing guide rail 6; the printing assembly and the drying assembly are fixedly connected at the bottom of the printing slide plate 601, so as to realize that after the printing assembly is completed, the drying assembly is moved to the printing position for drying.

[0053] The printing assembly comprises a screen locking air cylinder 7 and a printing servo motor 701; the screen locking air cylinder 7 is connected with a screen; the printing servo motor 701 is respectively connected with an ink scraping knife and an ink returning knife; the drying assembly comprises an infrared heater 8, an air blower 801 and a thermocouple 802.

[0054] The screen locking air cylinder 7 plays a role of fixing the screen; the printing servo motor 701 adopts a lifting double station mode to realize printing and ink returning by position change of a servo lifting servo, thereby optimizing a servo motor for ink returning; the infrared heater 8 and the air blower 801 can cooperate to blow hot air, thereby realizing drying operation; temperature control is performed by a temperature controller in a control electric box 12, temperature gain is positive or negative 5 degrees Celsius, and temperature alarm is connected to a PLC in the control electric box 12, thereby realizing stable temperature control in normal operation and sound and light alarm by an indicating lamp in case of failure.

[0055] Both sides of the slide rail support 5 are respectively provided with a fixed seat 9; the fixed seat 9 is connected with a lead screw 901; the lead screw 901 is connected with a sliding block 902; the bottom of the slide rail 501 is provided with a horizontal guide rail 903; the horizontal guide rail 903 is connected with the sliding block 902; the end of the horizontal guide rail 903 is provided with a second motor 904; the horizontal guide rail 903 is provided with a second screw rod; the second screw rod is connected with a horizontal positioning seat 905;

[0056] The bottom of the slide rail support 5 is provided with a vertical guide rail 10; the end of the vertical guide rail 10 is provided with a third motor 101; the vertical guide rail 10 is provided with a third screw rod; the third screw rod is connected with a vertical positioning seat 102.

[0057] Both sides of the slide rail support 5 are respectively provided with a fixed seat 9; the fixed seat 9 is connected with a lead screw 901; the lead screw 901 is connected with a sliding block 902; the bottom of the slide rail 501 is provided with a horizontal guide rail 903; the horizontal guide rail 903 is connected with the sliding block 902; the end of the horizontal guide rail 903 is provided with a second motor 904; the horizontal guide rail 903 is provided with a second screw rod; the second screw rod is connected with a horizontal positioning seat 905;

[0058] The top of the ejection frame 4 is provided with positioning columns 11; the bottom of the horizontal positioning seat 905 and the vertical positioning seat 102 is provided with positioning blocks 111; and the glass is arranged between the positioning columns 11 and the positioning blocks 111.

[0059] The top of the ejection frame 4 is provided with a plurality of positioning columns 11; each positioning point of the glass is abutted by the positioning columns 11 and the positioning blocks 111, so that accurate positioning of the glass can be realized.

[0060] The control assembly comprises a control electric box 12; the bottom support 1 is provided with an out-sheet photoelectric switch 121, an in-sheet photoelectric switch 122 and an operation touch screen 123; the out-sheet photoelectric switch 121 and the in-sheet photoelectric switch 122 are arranged on the two sides of the bottom support 1 respectively; the out-sheet photoelectric switch 121, the in-sheet photoelectric switch 122, the conveying motor 304, the lifting cylinder 402, the slide rail motor 503, the first motor, the printing servo motor 701, the thermocouple 802, the second motor 904, the third motor 101 and the operation touch screen 123 are connected with the control electric box 12; and the control electric box 12 is connected with a foot switch 124.

[0061] The operation touch screen 123 comprises a selection knob 13 and an automatic starting button 131; and the control electric box 12 is provided with a PLC.

[0062] The operation touch screen 123 is provided with a single-chip microcomputer; the operation touch screen 123 can store a formula; the selection knob 13 can flexibly select an automatic sheet feeding mode or a manual mode; and the control electric box 12 is provided with a yellow lamp and a green lamp.

[0063] The specific working process of the utility model is as follows:

[0064] Manual mode:

[0065] The selection knob 13 selects the manual mode, and the indicator light is yellow; the ejection frame 4 is automatically raised, and the glass is manually placed on the positioning columns 11 of the ejection frame 4; if it is needed to position and print a trademark, the printing assembly can be controlled to move to the position of printing the trademark on the operation touch screen 123; the formula data is saved (if the formula of the same model has been saved before, it can be directly called) ; the automatic printing and drying operations are performed; the foot switch 124 is stepped after the printing is completed; the ejection frame 4 is lowered to wait for the sheet feeding signal of the rear-end equipment; the conveying roller 3 is automatically operated to convey the glass to the rear-end equipment after the signal transmission of the sheet feeding signal of the rear-end equipment connected is received; the out-sheet photoelectric switch 121 detects that the glass leaves, and the internal timer of the PLC starts timing; the ejection frame 4 is automatically raised after 1 second, and a semi-automatic cycle is completed.

[0066] Automatic mode:

[0067] The selection knob 13 selects the automatic mode, the indicator light is green, the servo motor returns to the original position automatically, and the ejector frame 4 lands; after the front-end device comes to the glass, if there is no glass on the conveying roller 3, the synchronous belt 305 runs and sends a signal to the front-end device to convey the glass to the middle of the bottom support 1; if the device has a glass, the synchronous belt 305 is in a waiting mode, and the automatic collection rear-end device is connected to the signal at any time, ready to flow the glass; if there is a need for printing marks in the automatic mode, the automatic start button 131 is selected on the operation touch screen 123, and the servo positioning formula data is selected; after the automatic mode printing glass flows to the middle of the bottom support 1, the ejector frame 4 rises, the servo mechanism automatically executes the positioning operation, clamps the glass, and then executes the printing and drying operations; after the above operations are completed, the foot pedal switch 124 is stepped on, and the glass is automatically flowed out after the rear-end device can flow the signal.

[0068] The utility model is described above with reference to the drawings. Obviously, the specific implementation of the utility model is not limited by the above mode. As long as various non-essential improvements are made by adopting the method concept and technical scheme of the utility model; or the above concept and technical scheme of the utility model are directly applied to other occasions without improvement, all of which are within the protection scope of the utility model.

Claims

1. A front-end printing conveyor, characterized in that: The invention comprises a bottom bracket (1) and a top bracket (2); the bottom bracket (1) is provided with a roller structure and a positioning and lifting structure; the positioning and lifting structure is connected to a control component; the top bracket (2) is provided with a guide rail structure; the guide rail structure is respectively provided with a printing component and a drying component; and glass is provided between the positioning and lifting structure and the printing component.

2. A front-end printing conveyor according to claim 1, characterized in that: The roller structure includes a conveying roller (3); the positioning and lifting structure includes an ejector frame (4); the ejector frame (4) is arranged between adjacent conveying rollers (3); an ejector frame guide rail (401) and a lifting cylinder (402) are respectively provided on the bottom bracket (1); the piston rod of the lifting cylinder (402) is connected to the ejector frame (4); an ejector frame slider (403) is connected to the ejector frame (4); and the ejector frame slider (403) is connected to the ejector frame guide rail (401).

3. A front-end printing conveyor according to claim 2, characterized in that: A mounting bearing (301) is provided on the top of the bottom bracket (1); both ends of the conveying roller (3) are respectively connected to the mounting bearing (301); a driven wheel (302) is provided at the end of the conveying roller (3); a guide wheel (303) and a conveying motor (304) are respectively provided on the bottom bracket (1); the conveying motor (304) is connected to a synchronous belt (305); and the synchronous belt (305) is respectively provided on the driven wheel (302) and the guide wheel (303).

4. A front-end printing conveyor according to claim 3, characterized in that: A slide rail bracket (5) is provided at the bottom of the top bracket (2); a slide rail (501) and a slide rail motor (503) are respectively provided on the slide rail bracket (5); the slide rail motor (503) is connected to a mounting slider (502); the mounting slider (502) is provided on the slide rail (501); the guide rail structure includes a printing guide rail (6); the printing guide rail (6) is provided at the bottom of the slide rail (501), and the printing guide rail (6) is connected to the mounting slider (502).

5. A front-end printing conveyor according to claim 4, characterized in that: A first motor is provided at the end of the printing guide rail (6); a first screw is provided in the printing guide rail (6); the first motor is connected to the end of the first screw, and the first screw is connected to a printing slide (601); the printing component and the drying component are both connected to the bottom of the printing slide (601).

6. A front-end printing conveyor according to claim 5, characterized in that: The printing assembly comprises a marking screen locking cylinder (7) and a printing servo motor (701); the marking screen locking cylinder (7) is connected to a screen; the printing servo motor (701) is respectively connected to an ink scraper and an ink return knife; and the drying assembly comprises an infrared heater (8), a blower (801) and a thermocouple (802).

7. A front-end printing conveyor according to claim 6, characterized in that: The two sides of the slide rail bracket (5) are respectively provided with a fixing seat (9); a screw rod (901) is connected to the fixing seat (9); a slider (902) is connected to the screw rod (901); a horizontal guide rail (903) is provided at the bottom of the slide rail (501); the horizontal guide rail (903) is connected to the slider (902); a second motor (904) is provided at the end of the horizontal guide rail (903); a second screw rod is provided in the horizontal guide rail (903); the second screw rod is connected to a horizontal positioning seat (905); A vertical guide rail (10) is provided at the bottom of the slide rail bracket (5); a third motor (101) is provided at the end of the vertical guide rail (10); a third screw is provided in the vertical guide rail (10); and the third screw is connected to a vertical positioning seat (102).

8. A front-end printing conveyor according to claim 7, characterized in that: A positioning column (11) is provided on the top of the ejection frame (4); a positioning block (111) is provided on the bottom of each of the horizontal positioning seat (905) and the vertical positioning seat (102); and the glass is arranged between the positioning column (11) and the positioning block (111).

9. A front-end printing conveyor according to any one of claims 7-8, characterized in that: The control component comprises a control electric box (12); a sheet-discharging photoelectric switch (121), a sheet-feeding photoelectric switch (122) and an operation touch screen (123) are provided on the bottom bracket (1); the sheet-discharging photoelectric switch (121) and the sheet-feeding photoelectric switch (122) are respectively provided on both sides of the bottom bracket (1); the sheet-discharging photoelectric switch (121), the sheet-feeding photoelectric switch (122), the conveying motor (304), the lifting cylinder (402), the slide motor (503), the first motor, the printing servo motor (701), the thermocouple (802), the second motor (904), the third motor (101) and the operation touch screen (123) are all connected to the control electric box (12); and the control electric box (12) is connected to a foot switch (124).

10. A front-end printing conveyor according to claim 9, characterized in that: The operation touch screen (123) includes a selection knob (13) and an automatic start button (131); and a PLC is provided in the control electric box (12).

Images