High-speed single gravure printing machine
By using square steel springs to connect the toothed shaft and setting a toothed shaft seat in the printing press, the problem of uneven toothed shaft pressure leading to poor print quality was solved, and the disassembly and maintenance process of the toothed shaft was simplified, achieving consistent toothed shaft movement and convenient maintenance.
Patent Information
- Application Number
- CN202520269495.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2035-02-19
AI Technical Summary
The uneven pressure of the impression cylinder teeth in existing printing presses causes inconsistent paper gripping rhythm, affecting the quality of printed products. Furthermore, the traditional tooth connection method requires disassembling the printing press wall panel for maintenance, which is time-consuming and labor-intensive.
A square steel spring is used to connect the first and second toothed shafts. The torque generated by the square steel spring makes the toothed shafts fit tightly against the impression cylinder. A toothed shaft seat is set on the toothed shafts for easy disassembly. The synchronous movement of the toothed shafts is achieved by combining an adjusting plate and a cam mechanism.
It achieves synchronous operation of the gear shafts, avoids inconsistencies in print quality, and simplifies the inspection and replacement process of the gear shafts.
Smart Images
Figure CN223590324U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of printing machinery, and particularly relates to a high-speed single concave printing machine. BACKGROUND
[0002] At present, the tooth shaft on the impression cylinder in the printing machine of the prior art is arranged in abutment with the impression cylinder through a pressure spring, and due to the fatigue degree and unbalanced torsion force generated by the pressure spring during work, the abutment degree of the tooth shaft and the impression cylinder produces different pressures, resulting in inconsistent rhythm of paper clamping (AB sheet error), so that the quality of printed matter is inconsistent. In addition, the traditional tooth shaft is arranged in connection with the impression cylinder through a shoulder iron, and due to the limitation of the shoulder iron at both ends of the impression cylinder, the wall plate of the printing machine needs to be disassembled when overhauling and replacing parts, so that time and effort are wasted and more costs are increased. UTILITY MODEL CONTENTS
[0003] The utility model provides a high-speed single concave printing machine aiming at the deficiency of the prior art, and the first tooth shaft and the second tooth shaft work in unison through the square steel spring, and the AB sheet error does not occur; in addition, the printing machine of the utility model is connected with the impression cylinder through the tooth shaft seat of the first tooth shaft and the second tooth shaft, and is convenient to disassemble.
[0004] The technical problem to be solved by the utility model is solved through the following technical scheme:
[0005] A high-speed single concave printing machine is sequentially connected with a paper feeder, a paper conveying mechanism, an impression cylinder, a gravure cylinder, a paper collecting cylinder, a conveying mechanism and a paper collector; the paper to be printed is conveyed from the paper feeder to the impression cylinder through the paper conveying mechanism, the impression cylinder delivers the paper to the gravure cylinder for printing, and the paper collecting cylinder conveys the printed paper to the paper collector through the conveying mechanism; the first tooth shaft and the second tooth shaft are arranged on the upper surface and the lower surface of the impression cylinder respectively, and the first tooth shaft and the second tooth shaft are symmetrically arranged; the square steel spring is arranged in the first tooth shaft and the second tooth shaft respectively, and the square steel spring generates torsion force to make the first tooth shaft and the second tooth shaft tightly abut against the impression cylinder as the impression cylinder rotates.
[0006] Better, the transmission end of the first tooth shaft and the second tooth shaft is fixedly provided with an adjusting plate respectively, and one end of the square steel spring is arranged in abutment against the adjusting plate; the pipe in the operation end of the first tooth shaft and the second tooth shaft is fixedly provided with a pipe plug respectively, and the other end of the square steel spring is fixedly sleeved in the pipe plug.
[0007] Better, the operation end of the first tooth shaft and the second tooth shaft is provided with a swing rod sleeve, a tooth opening roller and a cam respectively, and the swing rod part of the swing rod, the tooth opening roller and the cam are arranged in abutment.
[0008] Better, the first and second tooth shafts are fixed at both ends of the impression cylinder through tooth shaft seats, respectively.
[0009] The technical scheme of the utility model will be described in detail below with reference to the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 It is a structure schematic view of the high-speed single concave printing machine of the utility model.
[0011] Figure 2 It is a sectional structure schematic view of the impression cylinder.
[0012] Figure 3 It is a structure schematic view of the operation end of the impression cylinder.
[0013] Figure 4 It is a three-dimensional structure schematic view of the operation end of the impression cylinder.
[0014] Figure 5 It is a three-dimensional structure schematic view of the transmission end of the impression cylinder.
[0015] Figure 6 It is a shoulder iron connection schematic view of the prior art. DETAILED DESCRIPTION
[0016] Figure 1 It is a structure schematic view of the high-speed single concave printing machine of the utility model. Figure 1 As shown, the high-speed single concave printing machine of the utility model comprises, which are connected in sequence: a paper feeder 1, a paper conveying mechanism 2, an impression cylinder 3, a gravure cylinder 4, a conveying mechanism 5 and a paper collector 6; the paper to be printed is conveyed from the paper feeder 1 to the impression cylinder 3 through the paper conveying mechanism 2, and the impression cylinder 3 is conveyed to the gravure cylinder 4 for printing, and the printed paper is conveyed to the paper collector 6 through the conveying mechanism 5.
[0017] Figure 4 It is a three-dimensional structure schematic view of the operation end of the impression cylinder. Figure 5 As shown, the impression cylinder 3 is provided with tooth shaft seats 31 on the upper and lower surfaces, respectively, and the first tooth shaft 32 and the second tooth shaft 33 are fixedly connected with the impression cylinder 3 through the corresponding tooth shaft seats, respectively, and the central axes of the first tooth shaft 32 and the second tooth shaft 33 are on the same straight line, that is, the first tooth shaft 32 and the second tooth shaft 33 are symmetrically arranged. Tooth rows are sleeved on the first tooth shaft 32 and the second tooth shaft 33, respectively, and at least 20 paper holding teeth are arranged on each tooth row. Further, the tooth shaft seats not only provide support for the first tooth shaft 32 and the second tooth shaft 33, but also can be conveniently disassembled when the tooth shafts and the paper holding teeth need to be repaired or replaced. Figure 6 It is a shoulder iron connection schematic view of the prior art.Figure 6 As shown in the prior art, the shoulder iron 7 is arranged at both ends of the shaft body of the impression cylinder to support the tooth shaft, and due to the structure of the shoulder iron, when the tooth shaft and the paper clamping tooth are maintained or replaced, the wall plate of the printing machine needs to be disassembled, which is time-consuming and laborious and increases more cost.
[0018] Figure 2 It is a sectional structure schematic view of the impression cylinder of the utility model, Figure 5 It is a sectional structure schematic view of the impression cylinder of the utility model, Figure 2 As shown in Fig. 5, the adjusting plate 34 is arranged at the driving end of the first tooth shaft 32, and the adjusting plate 34 is fixed, that is, the driving end of the first tooth shaft 32 is fixed. Figure 3 It is a sectional structure schematic view of the impression cylinder of the utility model, Figure 3 As shown in Fig. 5, the adjusting plate 34 is arranged at the driving end of the first tooth shaft 32, and the adjusting plate 34 is fixed, that is, the driving end of the first tooth shaft 32 is fixed. Figure 2 And Figure 4 As shown in Fig. 5, the adjusting plate 34 is arranged at the driving end of the first tooth shaft 32, and the adjusting plate 34 is fixed, that is, the driving end of the first tooth shaft 32 is fixed.
[0019] The pipe plug 36 is arranged in the pipe of the operation end of the first tooth shaft, and the pipe plug 36 is fixedly arranged with the first tooth shaft 32, the square steel spring 35 is arranged in the first tooth shaft 32, one end of the square steel spring 35 is fixedly sleeved in the pipe plug 36, and the other end of the square steel spring 35 is fixedly arranged with the adjusting plate 34.
[0020] Specifically, the swing rod sleeve 38 is fixedly sleeved outside the first tooth shaft, the swing rod part of the swing rod 38 is tightly arranged with the cam 39, when the cam 39 rotates, the swing rod 38 rotates through the swing of the swing rod part, thereby driving the pipe plug 36 fixedly connected with the first tooth shaft 32 to rotate, and the square steel spring 35 generates torsion force with the rotation of the pipe plug 36; the tooth opening roller 37 is arranged on one side of the operation end of the first tooth shaft 32 through the fixing rod, and is tightly arranged with the cam 39, because the cam 39 has a high point, when the cam 39 rotates, the first tooth shaft 32 moves up and down through the tooth opening roller 37, thereby realizing the opening and closing work movement of the tooth on the first tooth shaft 32 on the impression cylinder 3 (i.e. the work of clamping and releasing paper). It should be noted that the torsion force generated by the square steel spring 35 is to make the tooth opening roller 37 tightly contact with the cam 39, thereby realizing that the clamping action of the paper clamping tooth on the first tooth shaft 32 and the second tooth shaft 33 is consistent whether the impression cylinder 3 rotates at high speed or low speed.
[0021] Working principle:
[0022] When the impression cylinder rotates, the cam 39 rotates, the swing lever 38 swings, and the swing lever 38 swings, thereby driving the tube plug 36 fixedly connected with the first tooth shaft 32 to rotate, because the transmission end of the first tooth shaft 32 is fixed, so the square steel spring 35 is subjected to a torsion force with the rotation of the tube plug 36.
[0023] The tooth opening roller 37 moves up and down when the cam 39 rotates, thereby realizing the opening and closing work movement (i.e. the work of picking up and releasing paper) of the tooth on the first tooth shaft 32 on the impression cylinder. It should be noted that the height points of the cam 39 are symmetrically arranged, when the first tooth shaft 32 performs the work action, the second tooth shaft 33 also simultaneously performs the work action and the work action is consistent.
[0024] In addition, the adjusting plate 34 has the function of adjusting the torsion force in addition to the function of fixing the transmission end of the first tooth shaft 32. Specifically, when it is necessary to increase the torsion force, the adjusting plate 34 is first rotated, and the square steel spring 35 is pre-tensioned to increase a torsion force.
[0025] Compared with the printing machine of the prior art, the single sheet intaglio printing machine of the utility model has the first tooth shaft 32 and the second tooth shaft 33 work consistently through the square steel spring 35, and the AB sheet error does not occur. (The AB sheet error is that the tooth shaft A and the tooth shaft B of the prior art are arranged in contact with the impression cylinder through a compression spring, because the fatigue degree generated in the working process of the compression spring makes the contact degree of the tooth shaft A and the tooth shaft B with the impression cylinder produce different pressures, the rhythm of the tooth picking up paper is inconsistent, and the printing quality of the tooth shaft A and the tooth shaft B is inconsistent.) In addition, the single sheet intaglio printing machine of the utility model is also provided with a tooth shaft seat, when the tooth shaft and the tooth picking up paper need to be repaired or replaced, the tooth shaft seat can be very conveniently disassembled.
Claims
1. A high-speed single gravure printing press, wherein the high-speed single gravure printing press is sequentially connected to: a paper feeder, a paper delivery mechanism, an impression cylinder, a gravure cylinder, a take-up cylinder, a conveying mechanism, and a take-up machine; the paper to be printed is conveyed from the paper feeder to the impression cylinder through the paper delivery mechanism, the impression cylinder transfers the paper to the gravure cylinder for printing, and the take-up cylinder conveys the printed paper to the take-up machine through the conveying mechanism; Its features are, A first toothed shaft and a second toothed shaft are respectively provided on the upper and lower surfaces of the impression cylinder, and the first toothed shaft and the second toothed shaft are arranged symmetrically. A square steel spring is respectively inserted in the first toothed shaft and the second toothed shaft. As the impression cylinder rotates, the square steel spring generates torque, so that the first toothed shaft and the second toothed shaft are tightly attached to the impression cylinder.
2. The high-speed single-gravure printing machine as described in claim 1, characterized in that, Adjusting plates are fixedly installed at the transmission ends of the first and second toothed shafts, and one end of the square steel spring abuts against the adjusting plate; pipe plugs are fixedly installed inside the operating ends of the first and second toothed shafts, and the other end of the square steel spring is fixedly sleeved inside the pipe plug.
3. The high-speed single-gravure printing machine as described in claim 1, characterized in that, A rocker arm sleeve, a tooth-opening roller, and a cam are respectively provided at the operating ends of the first and second tooth shafts, and the rocker arm portion, the tooth-opening roller, and the cam are closely fitted together.
4. The high-speed single-gravure printing machine as described in claim 1, characterized in that, The first toothed shaft and the second toothed shaft are respectively fixed to both ends of the impression cylinder by toothed shaft seats.