Large-width digital printing machine for composite beam

Abstract

According to the large-width digital printing machine using the composite beam, the composite beam is arranged, the composite beam comprises a main beam and an auxiliary beam, first adjusting screw rods are arranged between the main beam and the auxiliary beam at intervals, the main beam and the auxiliary beam are connected into a whole to form a double-beam system, and the auxiliary beam can provide auxiliary supporting force for the main beam; the positions of the main beam are ensured to be located on the same horizontal line, the anti-bending inertia moment of the main beam is enhanced, the anti-deflection capacity of the main beam is improved, when a printing spray head of the digital printing machine is hung on the composite cross beam and moves, the overall stress of the composite cross beam is balanced, and the dynamic deflection is controlled within a reasonable range, so that even if the width is increased, the composite cross beam is not prone to deformation; the number of the printing nozzles can be increased, and the device is especially suitable for a large-width multi-nozzle high-speed printing machine.

Description

TECHNICAL FIELD

[0001] The utility model belongs to digital printing equipment technical field especially relates to a big width digital printing machine with composite beam. BACKGROUND

[0002] With the surge of demand for wide width fabric (≥3.5 meters) in the textile market, digital printing machines are rapidly developing towards large width and high precision. However, the traditional rack design faces significant structural stability problems after width expansion, which is specifically manifested in the following technical bottlenecks: insufficient lateral rigidity leading to excessive dynamic deflection, the bending inertia moment of the traditional single main beam structure is insufficient when the width exceeds 3 meters, the printing head is suspended on the main beam and moves on the main beam to print and spray the fabric passing from below the main rack, dynamic load is generated during the movement of the printing head, leading to nonlinear growth of the lateral deflection of the main beam, actual measurement data shows that when the width increases from 2.5 meters to 4 meters, the midpoint deflection of the main beam will increase by more than the allowed threshold of printing precision, leading to increased printing color registration error, increased scrap rate and high scrap rate. SUMMARY

[0003] (I) Utility Model Objectives

[0004] In order to overcome the above shortcomings, the purpose of the utility model is to provide a big width digital printing machine with composite beam, to solve the technical problem of insufficient bending inertia moment of the main beam of the existing digital printing machine after increasing the width, and to enhance the deflection resistance of the main beam, leading to increased scrap rate.

[0005] (II) Technical Solutions

[0006] To achieve the above objectives, the technical solutions provided by the present application are as follows:

[0007] A big width digital printing machine with composite beam, comprising: a main rack longitudinally arranged for placing the fabric to be printed, two lateral racks symmetrically arranged on both sides of the main rack, and a composite cross beam arranged transversely above the main rack, wherein the composite cross beam comprises: a main beam connected to both ends of the two lateral racks respectively, an auxiliary beam arranged in parallel with the main beam and connected to both ends of the lateral racks respectively, a plurality of first adjusting screws arranged between the main beam and the auxiliary beam along the length direction of the main beam and the auxiliary beam, both ends of each first adjusting screw being connected to the main beam and the auxiliary beam respectively for adjusting the deflection between the main beam and the auxiliary beam, and at least one printing head capable of sliding over the fabric to print ink on the fabric in sliding cooperation with the main beam and the auxiliary beam.

[0008] The composite cross beam is provided, the composite cross beam comprises a main beam and an auxiliary beam, a first adjusting screw is arranged between the main beam and the auxiliary beam, the main beam and the auxiliary beam are connected into a whole to form a double-beam system, the auxiliary beam can provide auxiliary support force for the main beam, the positions of the main beam are guaranteed to be on the same horizontal line, the bending inertia moment of the main beam is enhanced, the deflection capacity of the main beam is improved, when the printing nozzle of the digital printing machine is hung and installed on the composite cross beam and moves, the overall stress of the composite cross beam is balanced, the dynamic deflection is controlled within a reasonable range, so that the composite cross beam is not easy to deform even if the width is increased, the number of printing nozzles can be increased, and the composite cross beam is especially suitable for a large-width multi-nozzle high-speed printing machine.

[0009] In some embodiments, each lateral frame comprises: a leg in an inverted concave structure, and a plurality of first connecting beams connecting the leg and the side of the main frame;

[0010] The leg is arranged in a concave structure, and since the concave structure is a closed cross section, the torsional stiffness of the design is improved compared with a conventional L-shaped leg.

[0011] In some embodiments, the two ends of the main beam are connected to the upper ends of the legs, and further comprising: two fixed supports in an inverted concave structure and connected to the upper ends of the corresponding legs at the lower ends respectively, and the upper ends of each fixed support are connected to the ends of the auxiliary beam;

[0012] The fixed support in a concave structure has strong torsional stiffness and forms a spatial truss constraint, thereby reducing the stress concentration coefficient of the lower leg and the risk of deformation of the leg.

[0013] In some embodiments, the main frame comprises: two wall plates arranged longitudinally symmetrically, and a plurality of second connecting beams arranged between the two wall plates, and the two ends of each second connecting beam are connected to the two wall plates respectively;

[0014] The main frame is arranged in a structure of two wall plates connected to a plurality of second connecting beams, which can not only improve the structural strength of the main frame, but also reduce the parallelism error between the two wall plates through the plurality of second connecting beams, thereby guaranteeing the installation precision of the printing guide rail.

[0015] In some embodiments, further comprising: a plurality of reinforcing beams arranged at the central positions of the two wall plates and having a cross section larger than that of the second connecting beams, and the two ends of each reinforcing beam are connected to the two wall plates respectively;

[0016] The arrangement of the plurality of reinforcing beams can enhance the structural strength of the connection between the two wall plates and improve the load-bearing capacity of the main frame.

[0017] In some embodiments, each lateral frame further comprises: a first foot arranged at the lower end of the leg and connecting the two sides of the lower end of the leg;

[0018] The first foot is connected to the two sides of the lower end of the concave leg, which can improve the torsional stiffness of the leg.

[0019] In some embodiments, the first support leg is in a plate structure and is a plurality of layers, further comprising: a first threaded adjusting structure longitudinally passing through the plurality of first support legs and threadedly cooperating with the plurality of first support legs, for adjusting the interval between two adjacent first support legs to adjust the height of the support leg;

[0020] The height of the support leg can be adjusted by the cooperation of the plurality of first support legs and the first threaded adjusting structure.

[0021] In some embodiments, further comprising: a plurality of second support legs arranged at the lower end of the first connecting beam and in a plate structure, the plurality of second support legs being arranged in layers, further comprising: a second threaded adjusting structure longitudinally passing through the plurality of second support legs and threadedly cooperating with the plurality of second support legs, for adjusting the interval between two adjacent second support legs to adjust the height of the first connecting beam;

[0022] The height of the entire lateral rack can be adjusted by the cooperation of the second support leg and the first support leg.

[0023] In some embodiments, further comprising: a plurality of adjusting foot cups arranged at the lower end of the main rack and threadedly cooperating with the main rack, capable of adjusting the height of the main rack up and down;

[0024] The height of the main rack can be adjusted by the adjusting foot cup, and the height of the entire rack can be adjusted by the cooperation between the first support leg, the second support leg and the adjusting foot cup. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic view of the rack of the large-width digital printing machine with a composite beam of the utility model;

[0026] Figure 2 is Figure 1 is a local enlarged view of part A in

[0027] Figure 3 is a structural schematic view of the large-width digital printing machine without a default auxiliary beam of the utility model.

[0028] REFERENCE SIGNS:

[0029] 1, main rack; 101, wallboard; 102, second connecting beam; 103, reinforcing beam; 2, lateral rack; 201, support leg; 202, first connecting beam; 203, first support leg; 3, composite cross beam; 301, main beam; 302, auxiliary beam; 303, first adjusting screw; 4, adjusting foot cup; 5, fixed support; 6, second support leg; 7, second adjusting screw; 8, guide rail. DETAILED DESCRIPTION

[0030] To make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below with reference to the drawings in conjunction with specific embodiments. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of well-known structures and techniques is omitted to avoid unnecessary confusion of the concept of the present application.

[0031] The utility model provides a kind of large-width digital printing machine with composite beam, comprising: the mainframe 1 for placing the fabric to be printed vertically, two lateral frames 2 are symmetrically arranged on the both sides of the mainframe 1, the composite crossbeam 3 is arranged horizontally above the mainframe 1, wherein the composite crossbeam 3 includes: the main beam 301 of two ends respectively connected with two lateral frames 2, the auxiliary beam 302 is arranged in parallel with the main beam 301 and the both ends are respectively connected with the lateral frame 2, a plurality of first adjusting screw rods 303 are arranged in the length direction of the main beam 301 and the auxiliary beam 302 and are arranged between the main beam 301 and the auxiliary beam 302, the both ends of each first adjusting screw rod 303 are respectively connected with the main beam 301 and the auxiliary beam 302 for adjusting the deflection between the main beam 301 and the auxiliary beam 302, and further comprising: the printing head that can be slid to the fabric above and ink is sprayed to fabric is slid with the main beam 301 and the auxiliary beam 302.

[0032] Specifically, two transmission chains can be symmetrically arranged on the mainframe 1, driven by motor for transmission, a plurality of stations are arranged on the transmission chain, workers can place the fabric on the corresponding station, the transmission chain is driven to rotate by motor, the fabric is longitudinally transmitted, when the fabric is transmitted below the composite crossbeam 3, the printing head is started, and is slid to the fabric above to spray the corresponding pattern on the fabric.

[0033] Preferably, corresponding clamps can be arranged on the station to fix the fabric, or air suction holes can be arranged to position the fabric by negative pressure adsorption.

[0034] Preferably, a visual angle detection device can be arranged on the composite crossbeam 3, the edge of the fabric is tracked by CCD scanning (2000 frames / s), the position of the fabric is determined, and then the printing head is moved to the corresponding position to spray the fabric by the control device.

[0035] Specifically, a screw rod can be arranged on the main beam 301, the screw rod is threadedly connected with the printing head, and the printing head is moved along the main beam 301 and the auxiliary beam 302 by rotating the screw rod driven by motor.

[0036] Specifically, the lower end of the print head is in convex structure, and is in sliding fit with the main beam 301 and the auxiliary beam 302. Preferably, guide rails 8 can also be arranged at the two side edges of the upper end surface of the main beam 301, and the guide rails 8 are in sliding fit with the print head, further ensuring that the print head is in the same straight line with the main beam 301 and the auxiliary beam 302 during movement.

[0037] Specifically, the print head can adopt a conventional structure on the market, such as including:

[0038] High-precision piezoelectric nozzle: adopting variable ink drop technology (3-15 pL adjustable), supporting 8-16 color channels (including white ink and fluorescent ink);

[0039] Ink supply subsystem: full-closed loop constant pressure ink supply device + nanometer level filtration system (anti-blocking design)

[0040] Print head temperature control module: intelligent temperature control integrated with PID algorithm (±0.5℃ precision), ensuring stable ink viscosity

[0041] FPGA acceleration engine: special hardware to realize 20000 dpi image color separation processing.

[0042] Specifically, the print head can be provided with an X sliding module and a Y sliding module, the X sliding module is arranged on the Y sliding module, and the nozzle is arranged on the X sliding module, so that the nozzle can be adjusted to move to different positions of the fabric for printing.

[0043] Preferably, a cross-shaped rib plate can be arranged inside the main beam 301 and the auxiliary beam 302, which can improve the torsional stiffness by 47%.

[0044] Specifically, the distance between adjacent first adjusting screws 303 can be set to 600 mm, and the distance between adjacent first adjusting screws 303 can be adjusted according to the length of the main beam 301 and the auxiliary beam 302.

[0045] Specifically, when assembling the main beam 301 and the auxiliary beam 302, the main beam 301 and the auxiliary beam 302 are arranged in parallel, laser centering (error ≤0.1mm / m) is adopted, and the first adjusting screw 303 is installed in the cross sequence of “center→two sides”.

[0046] Specifically, the lateral frame 2 includes: a support leg 201 in inverted concave structure and a plurality of first connecting beams 202 arranged in parallel on the side surface of the support leg 201 and the main frame 1.

[0047] Preferably, the auxiliary beam 302 is fixed by two fixed supports 5 in inverted concave structure, and more specifically, the lower ends of the fixed supports 5 are respectively connected to the upper ends of the corresponding support legs 201, and the two ends of the auxiliary beam 302 are respectively connected to the corresponding fixed supports 5.

[0048] Specifically, the main frame 1 comprises two wall plates 101 arranged symmetrically in the longitudinal direction and a plurality of second connecting beams 102 arranged between the two wall plates 101, and the two ends of each second connecting beam 102 are connected with the two wall plates 101 respectively.

[0049] Preferably, a plurality of reinforcing beams 103 are arranged at the central positions of the two wall plates 101, and the two ends of each reinforcing beam 103 are connected with the two wall plates 101 respectively, and specifically, the cross section of the reinforcing beam 103 is larger than that of the second connecting beam 102, so as to enhance the connecting strength of the two wall plates 101.

[0050] Preferably, a first supporting leg 203 is arranged at the lower end of the supporting leg 201, and the first supporting leg 203 is connected with the two sides of the lower end of the supporting leg 201, so as to enhance the torsional stiffness of the supporting leg 201.

[0051] Further, the first supporting leg 203 is in a plurality of layers, and each first supporting leg 203 is in a plate structure, and further comprises a first screw adjusting structure longitudinally arranged between the plurality of first supporting legs 203 and screwing with the plurality of first supporting legs 203, and specifically, the first screw adjusting structure comprises a second adjusting screw 7 and a nut arranged on the second adjusting screw 7, the second adjusting screw 7 is arranged through the plurality of first supporting legs 203, and the nut supports the upper first supporting leg 203, and the height of the upper first supporting leg 203 can be adjusted by screwing the nut, so as to adjust the height of the supporting leg 201 and realize height compensation.

[0052] Preferably, a plurality of second supporting legs 6 are arranged at the lower end of the first connecting beam 202, and each second supporting leg 6 is in a plate structure, and the plurality of second supporting legs 6 are arranged in a plurality of layers, and further comprises a second screw adjusting structure longitudinally arranged through the plurality of second supporting legs 6 and screwing with the plurality of second supporting legs 6, and specifically, the structure of the second screw adjusting structure is the same as that of the first screw adjusting structure, and the adjusting mode of the second screw adjusting structure is also the same as that of the first screw adjusting structure.

[0053] Preferably, a plurality of adjusting foot cups 4 are arranged at the lower end of the main frame 1, and the plurality of adjusting foot cups 4 screw with the main frame 1, so as to adjust the height of the main frame 1.

[0054] Specifically, the height of the entire rack can be adjusted by adjusting the height of the first supporting leg 203, the second supporting leg 6 and the adjusting foot cup 4.

[0055] The rack adopting the application is used to install various equipment of the printing machine, and the waste rate of the fabric with a width of 4.2 meters is greatly reduced.

[0056] It should be understood that the above specific embodiments of the present application are only used for illustrative or explanatory purposes of the principles of the present application, and do not constitute a limitation on the present application. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present application shall be included in the protection scope of the present application. In addition, the appended claims of the present application are intended to cover all changes and modifications falling within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A wide-width digital printing machine using composite beams, characterized in that, include: A longitudinally arranged main frame (1) for placing the fabric to be printed, two lateral frames (2) arranged symmetrically on both sides of the main frame (1), and a composite beam (3) arranged laterally above the main frame (1). The composite beam (3) includes: a main beam (301) with both ends connected to the two lateral frames (2), an auxiliary beam (302) arranged parallel to the main beam (301) and with both ends connected to the lateral frames (2), and a crossbeam along the length of the main beam (301) and the auxiliary beam (302). A plurality of first adjusting screws (303) are spaced apart in the angular direction between the main beam (301) and the auxiliary beam (302). The two ends of each first adjusting screw (303) are respectively connected to the main beam (301) and the auxiliary beam (302) to adjust the deflection between the main beam (301) and the auxiliary beam (302). The device also includes at least one printing head that slides above the fabric and can spray ink onto the fabric, in sliding cooperation with the main beam (301) and the auxiliary beam (302).

2. The wide-width digital printing machine with composite beams according to claim 1, characterized in that, Each of the lateral frames (2) includes: a leg (201) with an inverted concave structure and a plurality of first connecting beams (202) connecting the leg (201) to the side of the main frame (1).

3. The wide-width digital printing machine with composite beams according to claim 2, characterized in that, The main beam (301) is connected to the upper end of the support leg (201) at both ends, and also includes two fixed brackets (5) with an inverted concave structure and whose lower ends are respectively connected to the upper end of the corresponding support leg (201), the upper end of each fixed bracket (5) being connected to the end of the auxiliary beam (302).

4. The wide-width digital printing machine with composite beams according to claim 1, characterized in that, The main frame (1) includes two longitudinally symmetrical wall panels (101) and multiple second connecting beams (102) disposed between the two wall panels (101), with each end of the second connecting beam (102) connected to the two wall panels (101) respectively.

5. The wide-width digital printing machine with composite beams according to claim 4, characterized in that, Also includes: Multiple reinforcing beams (103) are set at the center of the two wall panels (101) and have a cross-section larger than the second connecting beam (102). The two ends of each reinforcing beam (103) are respectively connected to the two wall panels (101).

6. The wide-width digital printing machine with composite beams according to claim 2, characterized in that, Each of the lateral frames (2) further includes a first foot (203) disposed at the lower end of the leg (201) and connecting the two sides of the lower end of the leg (201).

7. The wide-width digital printing machine with composite beams according to claim 6, characterized in that, The first support leg (203) has a plate-like structure and is composed of multiple stacked supports. It also includes a first threaded adjustment structure that is longitudinally inserted through the multiple first support legs (203) and threadedly engaged with the multiple first support legs (203), for adjusting the interval between adjacent first support legs (203).

8. The wide-width digital printing machine with composite beams according to claim 6 or 7, characterized in that, Also includes: The first connecting beam (202) is provided with a plurality of second legs (6) in a plate-like structure at the lower end, and the plurality of second legs (6) are stacked. The first part also includes a second threaded adjustment structure that is longitudinally inserted through the plurality of second legs (6) and threadedly engaged with the plurality of second legs (6), for adjusting the interval between two adjacent second legs (6).

9. The wide-width digital printing machine with composite beams according to claim 1, characterized in that, Also includes: Multiple adjustable feet (4) are provided at the lower end of the main frame (1) and threaded into the main frame (1), which enable the main frame (1) to be adjusted vertically.

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