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CN-117507584-B - Printer frame assembly structure and assembly method

CN117507584BCN 117507584 BCN117507584 BCN 117507584BCN-117507584-B

Abstract

The invention discloses a printer frame assembly structure, which comprises a platform, wherein two wallboards are symmetrically arranged on the platform, a group of upper supporting ribs and lower supporting ribs which are arranged in parallel are arranged between the two wallboards, the upper supporting ribs and the lower supporting ribs are vertical to the wallboards, plate roller holes are formed in the two wallboards, and the printer frame assembly structure also comprises an alignment tool for aligning an inner cavity of a frame and a diagonal alignment device for aligning a diagonal difference value of the frame; according to the printer frame assembly method disclosed by the invention, the flatness of the assembly surface is ensured by checking all parts, and a foundation is laid for the assembly quality; aligning the diagonal difference value of the height direction of the frame and the diagonal difference value of the width direction of the frame by aligning the direction of the inner cavity of the frame; aligning the coaxiality of the corresponding holes of the wallboard from three directions of the inner cavity, the height and the width three-dimensional body; the gap between the frame and the assembly platform is adjusted, so that the bottom surfaces of the two wallboards are on the same horizontal plane, and the stability of the frame is improved; the wallboard and the supporting baffle are positioned and installed through the straight pin, and the integral assembly precision of the frame is high and the stability is strong.

Inventors

  • Nan Sanqiang

Assignees

  • 陕西北人印刷机械有限责任公司

Dates

Publication Date
20260505
Application Date
20231130

Claims (8)

  1. 1. The printer frame assembly structure is characterized by comprising a platform (2), wherein two wallboards (1) are symmetrically arranged on the upper plane of the platform (2), a group of upper supporting ribs (5) and lower supporting ribs (6) which are arranged in parallel are arranged between the two wallboards (1), the upper supporting ribs (5) and the lower supporting ribs (6) are perpendicular to the wallboards (1), the two wallboards (1) are subjected to combined boring processing or processing center piece processing and are respectively provided with a plate roller hole, and the printer frame assembly structure further comprises an alignment tool (7) for aligning an inner cavity of a frame and a diagonal alignment device (10) for aligning a diagonal difference value of the frame; The alignment tool (7) comprises a connecting rod a (7-3) and a connecting rod b (7-5) which are mutually and axially sleeved, wherein the connecting rod a (7-3) and the connecting rod b (7-5) are fastened through a first jackscrew (7-4), one end of the connecting rod b (7-5) stretches into the connecting rod a (7-3), the other end of the connecting rod b (7-5) is connected with a first dial indicator (8) through a first clamping head (7-6), and one end, far away from the connecting rod b (7-5), of the connecting rod a (7-3) is fixedly connected with a spherical boss (7-1); The diagonal alignment device (10) comprises a first fixing seat (11) and a second fixing seat (12), wherein the first fixing seat (11) is an L-shaped fixing plate, a plurality of powerful magnets (16) are embedded in two perpendicular plates of the L-shaped fixing plate and in the second fixing seat (12), two supports are symmetrically and fixedly connected to the outer side surface of the L-shaped fixing plate, a cylindrical straight pin (17) parallel to the outer side surface of the L-shaped fixing plate is connected between the two supports, a fisheye bearing (18) is sleeved on the cylindrical straight pin (17), one end of the fisheye bearing (18) is connected with a screw rod (21) through a nut a (19), one end of the screw rod (21) far away from the fisheye bearing (18) is connected with a nut b (20), a first connecting rod (22) is fixedly connected to the nut b (20), a second connecting rod (23) is sleeved in the first connecting rod (22), one end of the second connecting rod (23) stretches into the first connecting rod (22) through a jackscrew (24), and the other end of the second connecting rod (23) is connected with a second connecting rod (25) through a clamping head (13); the second fixing seat (12) comprises a bottom plate (14), the powerful magnet (16) is integrally embedded in the bottom plate (14) through a screw, a cylinder (15) is mounted on the upper surface of the bottom plate (14), and the curved surface of the cylinder (15) is abutted to the measuring head of the second dial indicator (25).
  2. 2. The printer frame assembly structure according to claim 1, characterized in that the upper (5) and lower (6) brackets are machined simultaneously for a boring and milling machine, of uniform length.
  3. 3. The printer frame assembly structure according to claim 2, wherein the two ends of the upper supporting bar (5) and the two ends of the lower supporting bar (6) are respectively provided with a positioning straight pin, and the opposite inner side surfaces of the two wallboards (1) are symmetrically provided with positioning pin grooves, and the positioning pin grooves are matched with the positioning straight pins.
  4. 4. A method of assembling a printer frame, characterized by using a printer frame assembly according to any one of claims 1-3, comprising the following steps: step 1, checking that all parts have no greasy dirt and scratches, and ensuring the flatness of an assembly surface; Step 2, positioning and installing an upper supporting baffle (5) and a lower supporting baffle (6) and two wallboards (1) respectively by using positioning straight pins, placing side end faces of the two wallboards (1) on a platform (2), placing a baffle plate (3) on one side of the platform (2), enabling the top faces of the two wallboards (1) and the end faces of the platform (2) to be attached to the same side face of the baffle plate (3), measuring gaps between the two wallboards (1) and the baffle plate (3) respectively by using a feeler gauge, debugging, and connecting the upper supporting baffle (5) and the lower supporting baffle (6) with the two wallboards (1) respectively by using bolts after the gaps are qualified; step 3, six-point positioning measurement coaxiality of the inner cavity of the rack and alignment; Step 4, diagonally debugging and aligning the height direction of the frame by using a diagonal alignment device (10); Step 5, debugging the gap between the bottom surface of the wallboard (1) and the assembly platform (2); step 6, diagonally debugging and aligning the width direction of the frame by using a diagonal alignment device (10); And 7, respectively installing bases (9) at the bottom ends of the two wallboards (1) to fasten bolts.
  5. 5. The method for assembling a printer frame according to claim 4, wherein in the step 2, the debugging requirement is that a gap between two wallboards (1) and a baffle (3) and a gap between two wallboards (1) and a platform (2) are smaller than or equal to 0.02mm.
  6. 6. The method for assembling the printer frame according to claim 4, wherein the step 3 is specifically that six-point positioning marks are correspondingly performed on the inner sides of the two wallboards (1), and the alignment fixture (7) with the first dial indicator (8) is used for measuring and aligning at the measuring point, so that the coaxiality of the directions of the inner cavities of the frame is less than or equal to 0.10mm.
  7. 7. The method for assembling a frame of a printer according to claim 4, wherein the step 4 is specifically that a first fixing seat (11) of a diagonal alignment device (10) is adsorbed at one corner of one wallboard (1), a second fixing seat (12) is installed at the corresponding diagonal of the other wallboard (1) positioned on the same horizontal plane, a second connecting rod (23) is moved to enable the second connecting rod to stretch and adjust the measuring range in the first connecting rod (22), after the measuring range is determined, a jackscrew (24) is used for fastening the second connecting rod (23) and the first connecting rod (22), the first connecting rod (22) is rocked to enable a measuring head of a second dial gauge (25) at the end part of the second connecting rod (23) to touch a cylinder (15) on the second fixing seat (12) for measuring, numerical values are recorded, the first fixing seat (11) and the second fixing seat (12) are adsorbed on the other diagonal of the two wallboards (1) positioned on the same horizontal plane respectively, the diagonal distance difference is calculated, and the diagonal difference of the height direction of the frame is smaller than or equal to 0.15mm.
  8. 8. The method for assembling the printer frame according to claim 4, wherein the step 5 is specifically that the bottom surfaces of the two wallboards (1) are placed on the upper plane of the assembling platform (2), and the parallelism between the two wallboards (1) and the assembling platform (2) is detected by using a feeler gauge and is debugged until the parallelism is less than or equal to 0.02mm; The step 6 specifically comprises the steps of adsorbing a first fixing seat (11) of a diagonal alignment device (10) at a side end face corner of one wallboard (1), installing a second fixing seat (12) at a corresponding opposite side end face corner of the other wallboard (1) positioned on the same horizontal plane, moving a second connecting rod (23) to enable the second connecting rod to stretch and adjust a measuring range in a first connecting rod (22), fastening the second connecting rod (23) and the first connecting rod (22) by jackscrews (24) after the measuring range is determined, shaking the first connecting rod (22) to enable a measuring head of a second dial gauge (25) at the end part of the second connecting rod (23) to touch a cylinder (15) on the second fixing seat (12), recording numerical values, adsorbing the first fixing seat (11) and the second fixing seat (12) at the corresponding opposite side end face corner of the other wallboard (1) positioned on the same horizontal plane respectively, measuring length data, calculating a diagonal distance length difference value, repeating the steps to measure the diagonal distance difference value between the opposite end faces of the two wallboards (1) positioned on the other horizontal plane, and calculating the diagonal distance difference value until the diagonal distance difference value is smaller than or equal to 0.10mm.

Description

Printer frame assembly structure and assembly method Technical Field The invention belongs to the technical field of printing equipment assembly, and particularly relates to a printer frame assembly structure and a printer frame assembly method. Background The printer frame is a basic part of a printer, and is generally provided with functional parts such as a guide roller, a gear box, a scraper, an inking roller and the like between two wallboards, so that the printing work is orderly and stably carried out. The frame is used as a main basic part of the printer, and the quality of assembly of the frame directly influences the quality and precision retention of the whole machine and the quality and service life of each part in the printing process. The positioning alignment, adjustment and fixation of the frame are particularly important in the assembly process, the traditional positioning alignment mode is that a set of frame is aligned by two positioning mandrels, the mandrels need to be penetrated through corresponding holes, the mandrels are required to rotate flexibly, the volume of the mandrels is large, the cost is high and complex, the mandrels are not easy to penetrate or penetrate to rotate and are hard to take, the whole working efficiency is low, meanwhile, the coaxiality of the hole system can be influenced due to the local deformation of the wallboard, errors are generated, and the frame is unstable and has poor practicability. Disclosure of Invention The invention aims to provide a printer frame assembly structure which has the characteristics of high assembly precision and high stability. Another object of the invention is to provide a method of assembling a printer frame. The technical scheme includes that the printer frame assembly structure comprises a platform, two wallboards are symmetrically arranged on the platform, a group of upper supporting ribs and lower supporting ribs which are arranged in parallel are arranged between the two wallboards, the upper supporting ribs and the lower supporting ribs are perpendicular to the wallboards, the two wallboards are processed through combined boring or processing center pieces and are provided with plate roller holes, and the printer frame assembly structure further comprises an alignment tool for aligning an inner cavity of the frame and a diagonal alignment device for aligning a diagonal difference value of the frame. The present invention is also characterized in that, The upper support and the lower support are machined by a boring and milling machine simultaneously, and the lengths are consistent. The two ends of the upper supporting baffle and the two ends of the lower supporting baffle are respectively provided with a positioning straight pin, the opposite inner side surfaces of the two wallboards are symmetrically provided with positioning pin grooves, and the positioning pin grooves are matched with the positioning straight pins. The alignment tool comprises a connecting rod a and a connecting rod b which are sleeved with each other in the axial direction, the connecting rod a and the connecting rod b are fastened through a first jackscrew, one end of the connecting rod b extends into the connecting rod a, the other end of the connecting rod b is connected with a first dial indicator through a first clamping head, and one end of the connecting rod a, far away from the connecting rod b, is fixedly connected with a spherical boss. The diagonal alignment device comprises a first fixing seat and a second fixing seat, wherein the first fixing seat is an L-shaped fixing plate, a plurality of powerful magnets are embedded in two vertical plates of the L-shaped fixing plate and in the second fixing seat, two brackets are symmetrically and fixedly connected to the outer side face of the L-shaped fixing plate, a cylindrical straight pin parallel to the outer side face of the L-shaped fixing plate is connected between the two brackets, a fisheye bearing is sleeved on the cylindrical straight pin, one end of the fisheye bearing is connected with a screw rod through a nut a, one end of the screw rod, far away from the fisheye bearing, is connected with a nut b, the nut b is fixedly connected with a first connecting rod, a second connecting rod is sleeved in the first connecting rod, the first connecting rod and the second connecting rod are fastened through jackscrews, one end of the second connecting rod stretches into the first connecting rod, and the other end of the second connecting rod is connected with a second percentage meter through a clamping head; The second fixing base comprises a bottom plate, the powerful magnet is integrally embedded in the bottom plate through a screw, a cylinder is mounted on the upper surface of the bottom plate, and the curved surface of the cylinder is abutted to the measuring head of the second dial indicator. The other technical scheme of the invention is to provide a printer frame assembly method, which us