Improved treadmill screen printing machine

Abstract

An improved treadmill screen printing machine comprises a printing platform and a treadmill screen printing device assembled on the printing platform, and the treadmill screen printing device moves in the length direction of the printing platform through cooperation of a gear driven by a treadmill device driving gear motor and a platform rack. The treadmill screen printing device is provided with a plurality of screen printing plates arranged in the width direction and the length direction of the treadmill screen printing machine, and a motor direct connection lead screw nut pair and a vertical guide rail sliding block mechanism are matched to form a screen printing plate lifting mechanism. A lead screw nut electric sliding table is matched with a printing knife rest and an ink return knife rest to form a printing scraper and ink return scraper lifting mechanism, and a knife rest transverse movement driving gear motor is matched with a cog belt transmission mechanism to form a knife rest transverse movement mechanism. According to the utility model, multi-plate and multi-color printing can be completed at one printing station, so that the working efficiency of the treadmill screen printing machine is greatly improved, the treadmill screen printing machine is suitable for small-batch multi-color screen printing, and the printing cost can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of screen printing, in particular to an improved treadmill screen printing machine. Background Art

[0002] A treadmill screen printing machine consists of a long, rectangular printing platform and a treadmill screen printing device mounted on the platform. During operation, a row of substrates are placed along the length of the printing platform. The treadmill screen printing device then moves from one end of the printing platform to the other, completing each substrate to be printed one by one. Because the screen printing device can only print one substrate per movement along the length of the printing platform, the width of the printing platform is not fully utilized, affecting the operating efficiency of the treadmill screen printing machine. The treadmill screen printing machine disclosed in the applicant's prior patent application, application number 202223500624.9, utilizes a screen printing plate transverse movement mechanism composed of a motor-directed lead screw nut pair and a guide rail slider mechanism. This allows the screen printing plate to be moved to the corresponding position along the width of the printing platform as required, thereby completing the printing of multiple substrates placed along the width of the printing platform. This facilitates full utilization of the width of the printing platform, reduces the operating stroke of the treadmill screen printing device, and improves the operating efficiency of the treadmill screen printing machine. However, the above-mentioned treadle screen printing machine can only print one version and one color each time it moves a printing station, which affects the improvement of printing efficiency, especially when performing small-batch multi-color printing. Utility Model Content

[0003] The purpose of the present utility model is to provide an improved treadmill screen printing machine to address the above problems, so as to further improve the working efficiency of the treadmill screen printing machine, adapt to small-batch multi-color printing, reduce printing costs, and at the same time simplify the structure of the treadmill screen printing machine and improve the printing working environment.

[0004] The technical solution to achieve the above purpose is: an improved treadmill screen printing machine, comprising a printing platform and a treadmill screen printing device mounted on the printing platform, wherein the upper side of the printing platform is provided with a platform guide rail and a platform rack, and the treadmill screen printing device has a support frame consisting of two outer vertical plates arranged symmetrically on the left and right and an outer back plate connected to the rear ends of the two outer vertical plates, a treadmill device driving reduction motor and a slider cooperating with the platform guide rail are provided at the lower part of the outer vertical plate, and a gear engaged with the platform rack is provided on the output shaft of the treadmill device driving reduction motor. Wheel, a lifting frame body consisting of two inner vertical plates arranged opposite to each other on the left and right and an inner back plate connected to the rear ends of the two inner vertical plates is provided on the inner sides of the two outer vertical plates, a pair of vertical guide rail slider mechanisms symmetrical on the left and right and a lifting frame driving mechanism consisting of a motor directly connected lead screw nut pair are provided on the outer back plate, the nut of the lifting frame driving mechanism is fixedly connected to the inner back plate, and a pair of supporting beams with a groove-shaped cross section are connected to the lower end of the inner back plate, the notches of the two supporting beams are opposite to each other and are arranged parallel to the table surface of the printing platform, the rectangular mother frame is inserted into the notches of the two supporting beams and is connected by the top The screen printing plate fixing frame is fixed with wire, and at least two adjustable longitudinal beams are provided on the mother frame to separate the mother frame into a screen printing plate fixing frame. At least two screen printing plates are arranged longitudinally in each of the screen printing plate fixing frames. Clamps for fixing the screen printing plates are provided on the mother frame and the adjustable longitudinal beams. A flat fixing plate is provided between the two inner vertical plates. A pair of horizontal guide rail slider mechanisms are provided under the fixing plate, and a transverse frame is connected under the sliders of the two transverse guide rail slider mechanisms. Four sets of lead screw nut electric slides are symmetrically provided at both ends of the transverse frame. The two nuts of the two lead screw nut electric slides on the left are fixedly connected to the printing knife holder, and the printing scraper corresponding to the screen printing plate is arranged longitudinally at the lower end of the printing knife holder. The two nuts of the two lead screw nut electric slides on the right are fixedly connected to the ink return knife holder, and the ink return scraper corresponding to the screen printing plate is arranged longitudinally at the lower end of the ink return knife holder. A knife holder transverse movement mechanism composed of a knife holder transverse movement drive reduction motor and a toothed belt transmission mechanism that transversely passes through the two inner vertical plates is provided on the lifting frame. The toothed belt of the toothed belt transmission mechanism is fixedly connected to the transverse movement frame.

[0005] In the above-mentioned improved treadmill screen printing machine, the lifting frame driving mechanism is symmetrically arranged in a pair.

[0006] The utility model can arrange multiple screen printing plates in the width direction and length direction of the treadmill screen printing machine respectively, so that the treadmill screen printing machine can complete the printing of multiple plates and multiple colors in one printing station, thereby greatly improving the working efficiency of the treadmill screen printing machine, adapting to small-batch multi-color screen printing, and reducing printing costs.

[0007] The utility model comprises a tool holder transverse movement driving reduction motor and a toothed belt transmission mechanism to form a tool holder transverse movement mechanism, which can not only realize the transverse movement of multiple tool holders, but also simplifies the structure of the treadmill screen printing machine and improves the working environment of the treadmill screen printing machine.

[0008] The utility model has a pair of lifting frame driving mechanisms symmetrically arranged on the left and right to drive the lifting frame, thereby improving the stable performance of the lifting operation of the lifting frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the main structure of the improved treadmill screen printing machine.

[0010] Figure 2 yes Figure 1 Schematic diagram of the top view structure.

[0011] Figure 3 yes Figure 1 AA cross-sectional structural diagram.

[0012] Figure: 1. Printing platform; 101. Platform guide rails; 102. Platform rack; 2. Treadmill screen printing device; 201. External vertical plate; 202. External back plate; 203. Treadmill device drive reduction motor; 204. Slider; 205. Gear; 206. Internal vertical plate; 207. Internal back plate; 208. Vertical guide rail and slider mechanism; 209. Lifting frame drive mechanism; 210. Support beam; 211. Mother frame ; 212. Top screw; 213. Adjustable longitudinal beam; 214. Screen printing plate; 215. Clamp; 216. Fixed plate; 217. Horizontal guide rail slider mechanism; 218. Transverse movement frame; 219. Screw nut electric slide; 220. Printing knife holder; 221. Printing scraper; 222. Ink return knife holder; 223. Ink return scraper; 224. Knife holder transverse movement drive reduction motor; 225. Toothed belt transmission mechanism. DETAILED DESCRIPTION

[0013] The specific implementation of the present utility model will be described with reference to the accompanying drawings.

[0014] like Figure 1 、 Figure 2 and Figure 3The improved treadmill screen printing machine includes a printing platform 1 and a treadmill screen printing device 2 mounted on the printing platform 1. The printing platform 1 comprises a platform frame and a tabletop. A platform guide rail 101 and a platform rack 102 are provided on the upper side of the printing platform 1. In the embodiment of the accompanying drawings, the platform guide rail 101 and platform rack 102 are located on the right side of the printing platform 1, while a rectangular track is provided on the left side of the printing platform 1, opposite the platform guide rail 101. The treadmill screen printing device 2 comprises a support frame consisting of two symmetrically arranged outer panels 201 and an outer back panel 202 connected to the rear ends of the two outer panels 201. The outer back panel 202 is a vertical circular plate with transverse reinforcing ribs at its upper and lower ends. A slider 204 is provided at the lower portion of the right outer panel 201, which engages with the platform guide rail 101. Rollers are provided at the lower portion of the left outer panel 201, which engage with the track. A treadmill drive reduction motor 203, coupled to the platform rack 102, is located below the right-hand outer panel 201. The treadmill drive reduction motor 203 is fixed to the outer surface of the outer panel 201. The output shaft of the treadmill drive reduction motor 203 passes through a pre-recorded hole in the outer panel 201, and a gear 205 is mounted at the end of the shaft, meshing with the platform rack 102. A lifting frame is located inside the two outer panels 201, consisting of two opposing inner panels 206 and an inner back panel 207 connected to the rear ends of the two inner panels 206. The inner back panel 207 is a vertical circular plate. A pair of symmetrical vertical guide rail slider mechanisms 208 are located in front of the outer back panel 202. The four sliders of the two vertical guide rail slider mechanisms 208 are fixedly connected to the inner back panel 207. A pair of lifting frame drive mechanisms 209, consisting of a motor-directly coupled lead screw and nut pair, are symmetrically disposed on the outer back plate 202. The nuts of the two lifting frame drive mechanisms 209 are fixedly connected to the inner back plate 207. A pair of support beams 210 with grooved cross-sections are fixedly attached to the lower end of the inner back plate 207. The notches of the two support beams 210 face each other and are arranged parallel to the surface of the printing platform 1. A rectangular mother frame 211 is inserted into the notches of the two support beams 210 and secured by screws 212 mounted on the support beams 210. The mother frame 211 is provided with at least two adjustable longitudinal beams 213 that separate the mother frame 211 into a screen printing plate fixing frame. In the embodiment shown in the accompanying drawings, two adjustable longitudinal beams 213 are provided, and are connected and fixed to the mother frame 211 via screws mounted at both ends. At least two screen printing plates 214 are arranged longitudinally within each screen printing plate fixing frame. In the embodiment shown in the accompanying drawings, two screen printing plates 214 are arranged longitudinally within each screen printing plate fixing frame. Clamps 215 for fixing the screen printing plates 214 are provided on the mother frame 211 and the adjustable longitudinal beams 213. The clamps 215 are vertical clamps.A flat fixed plate 216 is provided between the two inner vertical plates 206. A pair of symmetrical transverse guide rail slider mechanisms 217 are provided below the fixed plate 216. The sliders of the two transverse guide rail slider mechanisms 217 are connected to a transverse frame 218 below. The transverse frame 218 is an H-shaped frame consisting of a flat plate and vertical plates fixed at both ends. Four sets of lead screw nut electric slides 219 are symmetrically provided at both ends of the transverse frame 218. The two nuts of the two lead screw nut electric slides 219 on the left are fixedly connected to the printing knife frame 220, and the two nuts of the two lead screw nut electric slides 219 on the right are fixedly connected to the ink return knife frame 222. The printing knife frame 220 and the ink return knife frame 222 are composed of two vertical connecting plates fixedly connected to the nuts of the two lead screw nut electric slides 219, respectively, and a crossbar mounted on the lower part of the two vertical connecting plates. A printing scraper 221 corresponding to the screen printing plate 214 is arranged longitudinally below the crossbar of the printing blade holder 220, and an ink return scraper 223 corresponding to the screen printing plate 214 is arranged longitudinally below the crossbar of the ink return blade holder 222. The printing scraper 221 and ink return scraper 223 are fixed to the crossbars of the printing blade holder 220 and ink return blade holder 222 via top screw hooks. A blade holder transverse movement mechanism is provided on the lifting frame, consisting of a blade holder transverse movement drive reduction motor 224 and a toothed belt transmission mechanism 225 that transversely passes through the two inner vertical plates 206. The toothed belt of the toothed belt transmission mechanism 225 is fixedly connected to the transverse movement frame 218 via a clamping plate and bolts.

[0015] The improved treadmill screen printing machine is provided with a conductive belt on the upper side of the printing platform 1, and a brush cooperating with the conductive belt is provided on the outer plate 201 for realizing power transmission to the treadmill screen printing device 2.

Claims

1. An improved treadmill screen printing machine, comprising a printing platform (1) and a treadmill screen printing device (2) mounted on the printing platform (1), wherein the upper side of the printing platform (1) is provided with a platform guide rail (101) and a platform rack (102), the treadmill screen printing device (2) has a support frame consisting of two outer vertical plates (201) arranged symmetrically on the left and right and an outer back plate (202) connected to the rear ends of the two outer vertical plates (201), a treadmill device driving reduction motor (203) and a slider (204) cooperating with the platform guide rail (101) are provided at the lower part of the outer vertical plate (201), the treadmill device The output shaft of the driving reduction motor (203) is equipped with a gear (205) meshing with the platform rack (102), and a lifting frame body composed of two inner vertical plates (206) arranged opposite to each other on the left and right and an inner back plate (207) connected to the rear ends of the two inner vertical plates (206) is provided on the inner side of the two outer vertical plates (201). The outer back plate (202) is provided with a pair of vertical guide rail slider mechanisms (208) symmetrical on the left and right and a lifting frame driving mechanism (209) composed of a motor directly connected lead screw nut pair, and the nut of the lifting frame driving mechanism (209) is fixedly connected to the inner back plate (207), which is characterized in that: The lower end of the inner back plate (207) is connected to a pair of support beams (210) with a groove-shaped cross section. The notches of the two support beams (210) are opposite to each other and are arranged parallel to the table surface of the printing platform (1). A rectangular mother frame (211) is inserted into the notches of the two support beams (210) and fixed by a top screw (212). At least two adjustable longitudinal beams (213) are provided on the mother frame (211) to separate the mother frame (211) into a screen printing plate fixing frame. At least two screen printing plates (214) are arranged longitudinally in the screen printing plate fixing frame, a clamp (215) for fixing the screen printing plate (214) is provided on the mother frame (211) and the adjustable longitudinal beam (213), a flat fixing plate (216) is provided between the two inner vertical plates (206), and a pair of front-to-back symmetrical transverse guide rail slider mechanisms (217) are provided below the fixing plate (216), and the two transverse guide rail slider mechanisms (217) are provided with a plurality of guide rail slider mechanisms (217). The slider is connected to the transverse frame (218) below. Four sets of lead screw nut electric slides (219) are symmetrically arranged at both ends of the transverse frame (218). The two nuts of the two lead screw nut electric slides (219) on the left are fixedly connected to the printing knife frame (220). The printing scraper (221) corresponding to the screen printing plate (214) is arranged longitudinally at the lower end of the printing knife frame (220). The two screws of the two lead screw nut electric slides (219) on the right are fixedly connected to the printing knife frame (220). The mother is fixedly connected to the ink return knife frame (222), and the ink return scraper (223) corresponding to the screen printing plate (214) is arranged longitudinally at the lower end of the ink return knife frame (222). A knife frame transverse movement mechanism consisting of a knife frame transverse movement drive reduction motor (224) and a toothed belt transmission mechanism (225) transversely passing through the two inner vertical plates (206) is provided on the lifting frame body, and the toothed belt of the toothed belt transmission mechanism (225) is fixedly connected to the transverse movement frame (218).

2. The improved treadmill screen printing machine according to claim 1, characterized in that: The lifting frame driving mechanism (209) is symmetrically arranged in a pair.

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