Automatic ink-stirring device for curved surface printing

Abstract

The present invention relates to the field of curved surface printing, and in particular to an automatic ink stringing device for curved surface printing, comprising a first ink stringing roller, a second ink stringing roller, an ink stringing assembly, a driving assembly and a clutch assembly, wherein the driving assembly is connected to the ink stringing assembly, the ink stringing assembly is respectively connected to the first ink stringing roller and the second ink stringing roller, the driving assembly drives the first ink stringing roller to rotate and the first ink stringing roller and the second ink stringing roller to move back and forth along the rotation axis through the ink stringing assembly; the clutch assembly is connected to the ink stringing assembly, and the clutch assembly controls the working state of the first ink stringing roller and the second ink stringing roller by controlling the connection state of the ink stringing assembly and the driving assembly. The present invention controls the working state of the first ink stringing roller and the second ink stringing roller through the driving assembly, can change the speed limit difference between the ink stringing wheel and the main machine, eliminate or solve the ink mark or ink pushing phenomenon in the industry; when the machine is stopped to clean the ink stick, the clutch assembly is used to control the automatic separation of the driving assembly and the first ink stringing roller and the second ink stringing roller to prevent other mechanical failures, which is simple and effective.

Description

Technical Field

[0001] The invention relates to the field of curved surface printing, and in particular to an automatic ink-stirring device for curved surface printing. Background Art

[0002] Curved surface printing refers to the printing method of printing on substrates with curved shapes. When printing on cylindrical, arc-shaped objects, such as plastic, metal, paper, and other shaped barrels, cups, and bowl-shaped containers, curved surface printers are often used for printing. The existing ink supply device is powered by the main machine through the gear transmission mechanism to achieve synchronous operation, and the linear speed is fixed; because during the printing process, the starting point of the synchronous and same-speed ink rollers is always the same, and after a while, there will be an ink bar at the starting point, which cannot be automatically eliminated. The machine can only be stopped to clean the ink path and then restarted. This leads to poor printing results, and frequent startups and shutdowns affect production efficiency. Summary of the invention

[0003] In view of the above technical problems, the present invention provides an automatic ink-stirring device for curved surface printing, which can meet different printing process requirements by changing the reciprocating stroke of ink stirring.

[0004] The present invention provides the following technical solutions:

[0005] An automatic ink stringing device for curved surface printing comprises a first ink stringing roller, a second ink stringing roller, an ink stringing assembly, a driving assembly and a clutch assembly, wherein: the driving assembly is connected to the ink stringing assembly, the ink stringing assembly is respectively connected to the first ink stringing roller and the second ink stringing roller, the driving assembly drives the first ink stringing roller to rotate and the first ink stringing roller and the second ink stringing roller to move back and forth along the rotation axis through the ink stringing assembly; the clutch assembly is connected to the ink stringing assembly, and the clutch assembly controls the working state of the first ink stringing roller and the second ink stringing roller by controlling the connection state of the ink stringing assembly and the driving assembly.

[0006] Furthermore, the driving component includes a driving motor and a driving gear fixedly connected to the output shaft of the driving motor; the ink stringing component includes a driven gear meshing with the driving gear; one end of the first ink stringing roller is connected to a first gear, and the first gear meshes with the driven gear; the driving motor drives the first ink stringing roller to rotate through the meshing transmission between the driving gear, the driven gear and the first gear.

[0007] Furthermore, the clutch assembly includes a shift fork and a driving cylinder for driving the shift fork to move, the shift fork is connected to the driven gear, and the driving cylinder drives the driven gear to move back and forth along the axial direction of the gear through the shift fork.

[0008] Furthermore, the ink stringing assembly also includes an eccentric shaft wheel, an ink stringing drive rod, and an ink stringing swing frame fixedly connected to the driven gear. One end of the ink stringing drive rod is connected to the eccentric shaft wheel, and the other end is connected to the ink stringing swing frame. The ink stringing swing frame is respectively connected to the first ink stringing roller and the second ink stringing roller.

[0009] Furthermore, the eccentric shaft wheel includes an offset adjustment screw and an adjusting bolt, the offset adjustment screw and the adjusting bolt are perpendicular to each other, and the position of the offset adjustment screw is controlled by adjusting the adjusting bolt.

[0010] Furthermore, the ink-string driving rod includes a first connecting member, a horizontal screw and a second connecting member, the two ends of the horizontal screw are respectively connected to the first connecting member and the second connecting member, the first connecting member is connected to the eccentric shaft wheel, and the second connecting member is connected to the ink-string swing frame; the ink-string driving rod moves under the drive of the eccentric shaft wheel, driving the ink-string swing frame to swing.

[0011] Furthermore, the ink stringing swing frame is provided with a first swinging member and a second swinging member, the first swinging member is fixedly connected to the first ink stringing roller via an ink stringing guide column, and the second swinging member is fixedly connected to the second ink stringing roller via a cylindrical wheel.

[0012] Furthermore, the ink stringing device also includes an electrical control component, which is connected to the driving component and the clutch component to control the working states of the driving component and the clutch component.

[0013] The automatic ink-stirring device for curved surface printing of the present invention has the following beneficial effects:

[0014] (1) The automatic ink-stirring device for curved surface printing of the present invention can change the speed difference between the ink-stirring wheel and the main machine by controlling the working state of the first ink-stirring roller and the second ink-stirring roller through the driving component to meet the printing requirements of certain handicrafts, eliminate or solve the ink marks or ink pushing phenomenon in the industry, and improve the quality requirements of the products. At the same time, the clutch component is used to control the working state of the ink-stirring component, so that when the machine is stopped to clean the ink stick, the driving component and the first ink-stirring roller and the second ink-stirring roller are automatically separated to prevent other mechanical failures, which is simple and effective.

[0015] (2) The automatic ink-threading device for curved surface printing of the present invention controls the meshing and separation between the driven gear and the driving gear through the fork and the driving cylinder, thereby realizing the separation of the driving component from other components, which is convenient for cleaning when the machine is shut down.

[0016] (3) The automatic ink stringing device for curved surface printing of the present invention realizes ink stringing by enabling the first ink stringing roller and the second ink stringing roller to move back and forth through the arrangement of the ink stringing assembly. At the same time, the first ink stringing roller is driven by the driving motor to rotate through the meshing of the first gear, the driven gear and the driving gear, so that a speed difference is generated between the first ink stringing roller and the second ink stringing roller, thereby preventing ink marks or ink pushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the automatic ink stringing device for curved surface printing of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the automatic ink stringing device for curved surface printing of the present invention from another angle;

[0020] Figure 3 An exploded view of the automatic ink stringing device for curved surface printing of the present invention;

[0021] In the figure: 1-first ink string roller, 2-second ink string roller, 3-ink string assembly, 31-driven gear, 32-eccentric shaft wheel, 321-adjusting screw, 322-adjusting bolt, 33-ink string driving rod, 331-first connecting member, 332-horizontal screw, 333-second connecting member, 334-eccentric adjusting screw, 34-ink string swing frame, 341-first swinging member, 342-second swinging member, 343-ink string guide column, 344-cylindrical wheel, 4-driving assembly, 41-driving motor, 42-driving gear, 5-clutch assembly, 51-fork, 52-driving cylinder, 6-first gear. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0023] like Figure 1-3 As shown, an automatic ink stringing device for curved surface printing includes a first ink stringing roller 1, a second ink stringing roller 2, an ink stringing assembly 3, a driving assembly 4 and a clutch assembly 5, wherein: the driving assembly 4 is connected to the ink stringing assembly 3, the ink stringing assembly 3 is respectively connected to the first ink stringing roller 1 and the second ink stringing roller 2, the driving assembly 4 drives the first ink stringing roller 1 to rotate and the first ink stringing roller 1 and the second ink stringing roller 2 to move back and forth along the rotation axis through the ink stringing assembly 3; the clutch assembly 5 is connected to the ink stringing assembly 3, and the clutch assembly 5 controls the working state of the first ink stringing roller 1 and the second ink stringing roller 2 by controlling the connection state of the ink stringing assembly 3 and the driving assembly 4.

[0024] The automatic ink stringing device for curved surface printing of the present invention controls the working state of the first ink stringing roller 1 and the second ink stringing roller 2 through the driving component 4, and can change the speed limit difference between the ink stringing wheel and the main machine to meet the printing requirements of certain handicrafts, eliminate or solve the ink marks or ink pushing phenomenon in the industry, and improve the quality requirements of the product. At the same time, the clutch component 5 is used to control the working state of the ink stringing component 3, so that when the machine is stopped to clean the ink stick, the driving component 4 and the first ink stringing roller 1 and the second ink stringing roller 2 are automatically separated to prevent other mechanical failures, which is simple and effective.

[0025] Specifically, in some embodiments of the present invention, the driving assembly 4 includes a driving motor 41 and a driving gear 42 fixedly connected to the output shaft of the driving motor 41; the ink stringing assembly 3 includes a driven gear 31 meshed with the driving gear 42; one end of the first ink stringing roller 1 is connected to a first gear 6, and the first gear 6 meshes with the driven gear 31; the driving motor 41 drives the first ink stringing roller 1 to rotate through the meshing transmission between the driving gear 42, the driven gear 31 and the first gear 6. The present invention controls the first ink stringing roller 1 to rotate through gear transmission while it is stringing, so that the first ink stringing roller 1 and the second ink stringing roller 2 have a speed difference during the ink stringing process, thereby avoiding the occurrence of ink marks or ink pushing.

[0026] Specifically, in some embodiments of the present invention, the clutch assembly 5 includes a fork 51 and a driving cylinder 52 for driving the fork 51 to move, the fork 51 is connected to the driven gear 31, and the driving cylinder 52 drives the driven gear 31 to move back and forth along the gear axis through the fork 51. Specifically, when the machine is stopped for inspection and cleaning, in order to prevent other mechanical failures, the driven gear 31 is driven by the fork 51 and the driving cylinder 52 to move along the gear axis and separate from the driving gear 42, thereby avoiding possible sudden operation of the driving assembly, which is safe and reliable.

[0027] Specifically, in some embodiments of the present invention, the ink stringing assembly 3 further includes an eccentric shaft wheel 32 fixedly connected to the driven gear 31, an ink stringing driving rod 33, and an ink stringing swing frame 34. One end of the ink stringing driving rod 33 is connected to the eccentric shaft wheel 32, and the other end is connected to the ink stringing swing frame 34. The ink stringing swing frame 34 is respectively connected to the first ink stringing roller 1 and the second ink stringing roller 2. Through the setting of the ink stringing assembly, the rotation of the eccentric shaft wheel 32 is converted into the swing of the ink stringing swing frame 34, and further converted into the back and forth stringing of the first ink stringing roller and the second ink stringing roller.

[0028] Specifically, in some embodiments of the present invention, the eccentric shaft wheel 32 includes an offset screw 321 and an adjusting bolt 322, the offset screw 321 and the adjusting bolt 322 are perpendicular to each other, and the position of the offset screw 321 is controlled by adjusting the adjusting bolt 322. According to different printing products and different requirements for the back-and-forth movement displacement of the ink stringing roller, it can be achieved by adjusting the distance between the offset screw 321 and the central axis of the eccentric shaft wheel 32. The farther the distance, the greater the swing amplitude, and the greater the back-and-forth movement displacement of the ink stringing roller. More specifically, when the position of the offset screw 321 is determined, it is fixed by tightening the adjusting bolt 322.

[0029] Specifically, in some embodiments of the present invention, the ink-string driving rod 33 includes a first connecting member 331, a horizontal screw rod 332, and a second connecting member 333. The two ends of the horizontal screw rod 332 are respectively connected to the first connecting member 331 and the second connecting member 333. The first connecting member 331 is connected to the eccentric shaft wheel 32, and the second connecting member 333 is connected to the ink-string swing frame 34. The ink-string driving rod 33 moves under the drive of the eccentric shaft wheel 32, driving the ink-string swing frame 34 to swing. More specifically, an eccentric adjustment screw 334 is installed on the horizontal screw rod 332 to adjust the movement process of the ink-string driving rod 33.

[0030] Specifically, in some embodiments of the present invention, the ink stringing swing frame 34 is provided with a first swinging member 341 and a second swinging member 342, the first swinging member 341 is fixedly connected to the first ink stringing roller 1 through an ink stringing guide column 343, and the second swinging member 342 is fixedly connected to the second ink stringing roller 2 through a cylindrical wheel 344.

[0031] Specifically, in some embodiments of the present invention, the ink stringing device also includes an electrical control component (not shown in the figure), which is connected to the drive component 4 and the clutch component 5 to control the working state of the drive component and the clutch component. The present invention uses the drive component as a power source. More specifically, the drive motor is a servo motor, and the ink stringing device is driven to work by the servo motor. The electrical control component controls the working process of the entire printing device. The servo motor starts working according to pre-set parameters by receiving the signal sent by the electrical control component. Preferably, the electrical control component is a PLC. Through PLC control, the speed ratio mode can be set. When ink bars or ink marks appear in a certain printing process, the linear speed can be set to generate a linear speed difference to compensate for this shortcoming; or the printing device can be set to automatically compensate for the linear speed difference after running for a certain period of time.

[0032] The present invention is further described above with the aid of specific embodiments. However, it should be understood that the specific description here should not be construed as limiting the essence and scope of the present invention. Various modifications made to the above embodiments by ordinary technicians in the field after reading this specification are all within the scope of protection of the present invention.

Claims

1. An automatic ink-stirring device for curved surface printing, characterized in that: The ink stringing device comprises a first ink stringing roller, a second ink stringing roller, an ink stringing assembly, a driving assembly and a clutch assembly, wherein: the driving assembly is connected to the ink stringing assembly, the ink stringing assembly is connected to the first ink stringing roller and the second ink stringing roller respectively, the driving assembly drives the first ink stringing roller to rotate and the first ink stringing roller and the second ink stringing roller to move back and forth along the rotation axis through the ink stringing assembly; the clutch assembly is connected to the ink stringing assembly, and the clutch assembly controls the working state of the first ink stringing roller and the second ink stringing roller by controlling the connection state of the ink stringing assembly and the driving assembly; The driving assembly includes a driving motor and a driving gear fixedly connected to an output shaft of the driving motor; the ink stringing assembly includes a driven gear meshing with the driving gear; one end of the first ink stringing roller is connected to a first gear, and the first gear meshes with the driven gear; the driving motor drives the first ink stringing roller to rotate through meshing transmission between the driving gear, the driven gear and the first gear; The ink stringing assembly further comprises an eccentric shaft wheel, an ink stringing driving rod, and an ink stringing swing frame which are fixedly connected to the driven gear, one end of the ink stringing driving rod is connected to the eccentric shaft wheel, and the other end is connected to the ink stringing swing frame, and the ink stringing swing frame is respectively connected to the first ink stringing roller and the second ink stringing roller; The ink stringing swing frame is provided with a first swinging member and a second swinging member, the first swinging member is fixedly connected to the first ink stringing roller via an ink stringing guide column, and the second swinging member is fixedly connected to the second ink stringing roller via a cylindrical wheel.

2. The automatic ink stringing device for curved surface printing according to claim 1, characterized in that: The clutch assembly includes a shift fork and a driving cylinder for driving the shift fork to move, the shift fork is connected to the driven gear, and the driving cylinder drives the driven gear to move back and forth along the axial direction of the gear through the shift fork.

3. The automatic ink-stirring device for curved surface printing according to claim 1, characterized in that: The eccentric shaft wheel comprises an eccentric adjustment screw and an adjusting bolt. The eccentric adjustment screw and the adjusting bolt are perpendicular to each other. The position of the eccentric adjustment screw is controlled by adjusting the adjusting bolt.

4. The automatic ink-stirring device for curved surface printing according to claim 3, characterized in that: The ink string driving rod includes a first connecting member, a horizontal screw rod and a second connecting member, the two ends of the horizontal screw rod are respectively connected to the first connecting member and the second connecting member, the first connecting member is connected to the eccentric shaft wheel, and the second connecting member is connected to the ink string swing frame; the ink string driving rod moves under the drive of the eccentric shaft wheel, driving the ink string swing frame to swing.

5. The automatic ink-stirring device for curved surface printing according to claim 1, characterized in that: The ink stringing device further comprises an electrical control component, which is connected to the driving component and the clutch component to control the working states of the driving component and the clutch component.

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