Full-automatic stretching machine

Abstract

The invention discloses a full-automatic stretching machine. The full-automatic stretching machine comprises a first clamping device, a second clamping device, a third clamping device and a fourth clamping device; a third driving shaft and a third driving shaft driven rod can jointly control the first clamping device to be far away from or close to one short edge of a bottom rack, and a fourth driving shaft and a fourth driving shaft driven rod can jointly control the second clamping device to be far away from or close to the other short edge of the bottom rack; and a second driving shaft second driven rod and a second driving shaft fourth driven rod can jointly control the fourth clamping device to be far away from or close to one long side of the bottom rack, and a second driving shaft third driven rod and a second driving shaft fifth driven rod can jointly control the third clamping device to be far away from or close to the other long edge of the bottom rack. According to the full-automatic stretching machine, automatic adjustment of tensioning devices at four sides can be completed through chain transmission, chain transmission is suitable for long-distance transmission, and the cost is low while the accurate average transmission ratio is kept.

Description

Technical field [0001] The present invention relates to the field of screen printing plate auxiliary equipment, particularly with respect to a fully automatic tabulator suitable for different sizes of screen printing plates. Background technique [0002] The stretch is a helpleden auxiliary equipment. It is the first process of realizing the screen printing plate, the quality of the screen printing plate, the quality of the stretch, the quality of the stretch . [0003] The prior art shedral machine generally has the following technical defects: [0004] 1. The film of the traditional large-scale mechanical stretch is limited by the four-sided cross arm, there is a problem of four-sided tension, the middle tension is small, and the shadped net plate will appear when the ink is ink, the oil ink does not start. The position of the position, causing the case where it is not printing; and the large-scale pneumatic banditable mesh, the online frame four-sided intermediate part due to ...

AI Technical Summary

Problems solved by technology

[0004] 1. The fixture of the traditional large-scale mechanical stretching machine is limited by the four-sided cross-arm, which has the problem of large tension on the four sides and small tension in the middle. The stretched screen will return to the ink when printing. When the ink does not return to the beginning The position of the screen causes the situation that it cannot be printed; for large-scale pneumatic stretching machines, due to the top pressure of the clamps on the four sides of the screen frame, the inward contraction of the screen frame is greater than that of the four ends of the screen frame, which causes the screen frame The four sides form an inner arched arc. Due to the large deformation of the screen plate, the printable area of ​​the screen plate will inevitably decrease, thus affecting the effective printing area of ​​the screen plate;

[0005] 2. Inclined stretching is a necessary method for precision screen production. The existing method of inclined stretching is to place the screen frame at a certain angle on the equipment platform, and the screen is placed in a straight way. This oblique stretching method will waste more than 20% silk screen

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