An inking mechanism for a printing press

Abstract

The utility model provides a printing ink mechanism of printing machine belongs to medical equipment processing equipment technical field. It solved the existing printing ink mechanism and made scale wheel replacement inconvenient operation etc. The printing ink mechanism of this printing machine, printing machine includes scale wheel, the printing ink mechanism of printing machine includes support and ink box, be provided with printing ink cylinder in the ink box, printing ink cylinder is fixedly connected with the mounting seat on, the slide rail of being located ink box one side is fixed on the support, mounting seat is connected on the slide rail and can slide back and forth, printing ink cylinder is located scale wheel's rear and can be close to scale wheel, the positioning piece of being located mounting seat front is fixed on the support, the hinge piece of being located mounting seat's rear and can rotate is hinged to have on the support, the positioning bolt is screwd on the hinge piece, mounting seat can be clamped and fixed between the positioning piece and positioning bolt. This printing ink mechanism makes scale wheel replacement convenient operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of medical device processing equipment, and relates to an inking mechanism for a printing press. Background Technology

[0002] A syringe is a common medical device, primarily used to draw or inject gas or liquid using a needle. Knowing the dosage is crucial for proper use; therefore, the syringe barrel is marked with graduations. These graduations are printed onto the syringe barrel using a pad printing method.

[0003] For example, Chinese patent literature discloses a syringe scale line printing machine [Announcement No.: CN203438658U], which includes a rubber wheel for printing ink onto the outer surface of a syringe, a scale wheel with negative scale lines on its surface, and an ink-stirring wheel for transferring ink to the outer surface of the scale wheel. Below the ink-stirring wheel is an ink cartridge for holding ink. The rubber wheel, scale wheel, and ink-stirring wheel are sequentially attached to each other and can all rotate around their own axes. The outer surface of the scale wheel has a scraper for removing excess ink, and the outer surface of the ink-stirring wheel has helical teeth for applying ink. Above the ink-stirring wheel is a mounting plate, on which a motor for driving the ink-stirring wheel is fixedly connected. The mounting plate has slotted holes for adjusting the position of the ink-stirring wheel. However, the position of the motor interferes with the disassembly and assembly of the scale wheel. Furthermore, the contact between the outer circumference of the ink-stirring wheel and the outer circumference of the scale wheel causes friction during disassembly and assembly, affecting the ease of disassembly of the scale wheel.

[0004] Different products require different scale line styles, necessitating the preparation of multiple scale wheels with identical diameters and heights but varying scale line styles during production. When the production line needs to switch products requiring different scale line styles, the scale wheels must be disassembled for replacement. However, the motor's mounting position interferes with the disassembly and reassembly of the scale wheels, and friction occurs when the outer circumference of the ink-dispensing wheel is in contact with the outer circumference of the scale wheel. Therefore, replacing the scale wheel also requires removing the mounting plate, along with the ink-dispensing wheel and motor mounted on it. After replacing the scale wheel, the mounting plate, ink-dispensing wheel, and motor must be reinstalled, and the position of the ink-dispensing wheel must be readjusted, making scale wheel replacement inconvenient. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing an inking mechanism for a printing press, which solves the technical problem of inconvenient operation when changing the scale wheel in the existing inking mechanism.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] An inking mechanism for a printing press, the printing press including a scale wheel, the inking mechanism including a bracket and an ink cartridge, the ink cartridge containing an inking cylinder, characterized in that a mounting base is fixedly connected to the inking cylinder, a slide rail located on one side of the ink cartridge is fixedly connected to the bracket, the mounting base is connected to the slide rail and can slide back and forth, the inking cylinder is located behind the scale wheel and can be close to the scale wheel, a positioning member located in front of the mounting base is fixedly connected to the bracket, a hinge member located behind the mounting base and rotatable is hinged to the bracket, a positioning bolt is threadedly connected to the hinge member, and the mounting base can clamp and fix between the positioning member and the positioning bolt.

[0008] During normal operation, the mounting base is clamped and fixed between the positioning component and the positioning bolt, with the ink cartridge close to the scale wheel. When the scale wheel needs to be replaced, loosen the positioning bolt, rotate the hinge around the hinge point to move the positioning bolt away from the mounting base, and slide the mounting base backward away from the scale wheel. After replacing the scale wheel, slide the mounting base forward against the positioning component to bring the ink cartridge close to the scale wheel. Then rotate the hinge to align the positioning bolt with the mounting base, and tighten the positioning bolt to clamp and fix the mounting base between the positioning component and the positioning bolt. Thus, when replacing the scale wheel, the mounting base is unlocked by rotating the positioning bolt and the hinge. The mounting base only needs to slide away from the scale wheel without disassembling the mounting base and the ink cartridge. After installing the scale wheel, the positioning component positions the mounting base, eliminating the need to readjust the ink cartridge position, making operation convenient. Therefore, this ink filling mechanism makes scale wheel replacement easy.

[0009] In the inking mechanism of the aforementioned printing press, the hinge is L-shaped, with a hinge end and a connecting end at its two ends. The hinge end is hinged to the bracket, and the connecting end is connected to the positioning bolt. When the positioning bolt clamps and fixes the mounting base, the connecting end is higher than the hinge end. Thus, when the positioning bolt is loosened, the hinge can automatically rotate downwards under gravity, causing the positioning bolt to avoid the mounting base. This reduces the need to rotate the hinge and makes changing the scale wheel easier.

[0010] In the inking mechanism of the aforementioned printing press, the rear end of the slide rail is located above the hinge end, and the hinge can abut against the side of the slide rail when it swings upward.

[0011] After replacing the new scale wheel, swing the hinge upwards. The rear end of the slide rail has a limiting function to prevent the hinge from rotating excessively, thus making it easy to rotate the hinge into place and make the positioning bolt abut against the mounting base to fix the mounting base.

[0012] In the inking mechanism of the aforementioned printing press, a connecting bolt is threaded onto the bracket, and the hinge is fitted onto the connecting bolt. A spacer is also fitted onto the connecting bolt, and the spacer is located between the hinge and the bracket. To improve the stability of the mounting base, the connecting bolt can be tightened during operation to fix the hinge. When it is necessary to replace the scale wheel, the connecting bolt is loosened to allow the hinge to rotate.

[0013] In the inking mechanism of the above-mentioned printing press, the inking cylinder includes a cylindrical main body, the lower end of which is closed and the upper end is open. A vertically arranged slit is provided on the front side wall of the main body. A barrier is integrally connected to the front side of the main body and surrounds the outer periphery of the slit. The rear part of the scale wheel can be embedded in the barrier.

[0014] During operation, the rear side of the graduated wheel is embedded in the enclosure. Ink enters the main cylinder from the top and then flows out through the slit. The enclosure blocks the ink, preventing ink splashing and gathering the ink to ensure full contact between the ink and the graduated wheel. Excess ink passes through the enclosure and enters the ink cartridge.

[0015] In the inking mechanism of the aforementioned printing press, the enclosure includes an upper baffle, a lower baffle, and two side baffles. The upper baffle is flat and located above the slit, the lower baffle is flat and located below the slit, and the two side baffles are arc-shaped and located on both sides of the slit.

[0016] The scale wheel is cylindrical, and the above-mentioned structure of the enclosure can better match the scale wheel, allowing the scale wheel to fully contact the ink and ensuring printing quality.

[0017] In the inking mechanism of the aforementioned printing press, the front end of the upper baffle has a downwardly protruding auxiliary baffle, which is connected to both side baffles. The auxiliary baffle has a scraping effect on the ink on the upper surface of the scale wheel, preventing excessive ink residue on the upper surface of the scale wheel from affecting the printing quality.

[0018] In the inking mechanism of the aforementioned printing press, the mounting base includes a horizontal plate, a vertical plate, and a sliding plate. The inking cylinder is fixedly connected to the horizontal plate, and the vertical plate is fixedly connected between the horizontal plate and the sliding plate. A slider is fixed on the lower surface of the sliding plate, and the slider is connected to a slide rail. The sliding plate can clamp and fix itself between the positioning component and the positioning bolt. The separate mounting base facilitates its manufacturing.

[0019] In the above-mentioned inking mechanism of the printing press, the inking mechanism of the printing press also includes a pneumatic pump. The outlet end of the pneumatic pump is connected to the upper end of the inking cylinder by an inking pipe. The inlet end of the pneumatic pump is connected to the ink cartridge by a return pipe. A valve is connected to the inking pipe. An ink tank is connected to the return pipe. A return pipe is also provided between the ink tank and the pneumatic pump.

[0020] During operation, the pneumatic pump draws ink from the ink tank into the ink filling cylinder through the ink filling pipe, and draws ink from the ink cartridge back into the ink tank to form a circulation. The valve is used to control the flow rate of ink, and the return pipe transports the excess ink drawn out by the pneumatic pump back to the ink tank.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] The mounting base is slidably connected to the slide rail. Positioning components and hinge components are respectively set at the front and rear of the mounting base. Positioning bolts are threaded onto the hinge components. The mounting base can be clamped and fixed between the positioning bolts and positioning components, making it convenient to replace the scale wheel. Attached Figure Description

[0023] Figure 1 This is a three-dimensional view of the inking mechanism installed on a syringe printing press.

[0024] Figure 2 This is a partial 3D view of the ink cartridge part of the ink filling mechanism.

[0025] Figure 3 This is a partial 3D view of the ink cartridge part of the ink filling mechanism from another perspective.

[0026] Figure 4 This is a three-dimensional view of the ink filling cylinder in this ink filling mechanism.

[0027] Figure 5 This is a cross-sectional view of the ink cylinder and the scale wheel in this ink filling mechanism.

[0028] In the diagram, 1. Bracket; 2. Ink cartridge; 3. Ink filling cylinder; 3a. Main cylinder body; 3a1. Slit; 3b. Enclosure; 3b1. Upper baffle; 3b2. Lower baffle; 3b3. Side baffle; 3b4. Additional baffle; 4. Mounting base; 4a. Horizontal plate; 4b. Vertical plate; 4c. Sliding plate; 4d. Slider; 5. Slide rail; 6. Positioning component; 7. Hinge component; 7a. Hinge end; 7b. Connecting end; 8. Positioning bolt; 9. Connecting bolt; 10. Spacer; 11. Pneumatic pump; 12. Ink filling tube; 13. Ink return tube; 14. Valve; 15. Ink tank; 16. Return pipe; 17. Frame; 18. Rubber wheel; 19. Scale wheel. Detailed Implementation

[0029] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0030] Example 1

[0031] like Figure 1 and Figure 2 As shown, a syringe printing machine includes a frame 17, on which a rubber wheel 18, a scale wheel 19, and an inking mechanism are mounted. The rubber wheel 18 is located in front of the scale wheel 19. The inking mechanism includes a bracket 1, an ink cartridge 2, and a pneumatic pump 11, all of which are fixed to the frame 17. An inking cylinder 3 is disposed within the ink cartridge 2, and a mounting base 4 is fixedly connected to the inking cylinder 3. A slide rail 5 located on one side of the ink cartridge 2 is fixed to the bracket 1, and the mounting base 4 is connected to the slide rail 5 and can slide back and forth. A positioning element 6 located in front of the mounting base 4 is fixed to the bracket 1, and a hinge element 7 located behind the mounting base 4 and capable of rotation is hinged to the bracket 1. A positioning bolt 8 is threadedly connected to the hinge element 7, and the mounting base 4 can be clamped and fixed between the positioning element 6 and the positioning bolt 8. Mounting base 4 includes a horizontal plate 4a, a vertical plate 4b, and a sliding plate 4c. The ink cartridge 3 is fixedly connected to the horizontal plate 4a, and the vertical plate 4b is fixedly connected between the horizontal plate 4a and the sliding plate 4c. A slider 4d is fixed on the lower surface of the sliding plate 4c and is connected to the slide rail 5. The sliding plate 4c can be clamped and fixed between the positioning member 6 and the positioning bolt 8, that is, the front end of the sliding plate 4c can abut against the positioning member 6, and the front end of the positioning bolt 8 can abut against the rear end of the sliding plate 4c. An ink supply pipe 12 is connected between the outlet end of the pneumatic pump 11 and the upper end of the ink cartridge 3. A return ink pipe 13 is connected between the inlet end of the pneumatic pump 11 and the ink cartridge 2. A valve 14 is connected to the ink supply pipe 12, and an ink tank 15 is connected to the return ink pipe 13. A return pipe 16 is also provided between the ink tank 15 and the pneumatic pump 11.

[0032] like Figure 2 and Figure 3 As shown, the scale wheel 19 is located in front of the ink cylinder 3, and the ink cylinder 3 can be placed against the scale wheel 19. The positioning member 6 is U-shaped. The hinge member 7 is L-shaped, with the two ends of the hinge member 7 being the hinge end 7a and the connecting end 7b, respectively. The hinge end 7a is hinged to the bracket 1, and the connecting end 7b is connected to the positioning bolt 8. When the positioning bolt 8 clamps the fixed mounting base 4, the connecting end 7b is higher than the hinge end 7a. The rear end of the slide rail 5 is located above the hinge end 7a, and the hinge member 7 can abut against the side of the slide rail 5 when it swings upward. The bracket 1 is threaded with a connecting bolt 9, and the hinge end 7a of the hinge member 7 is fitted onto the connecting bolt 9. A spacer 10 is also fitted onto the connecting bolt 9, and the spacer 10 is located between the hinge member 7 and the bracket 1.

[0033] like Figure 3 , Figure 4 and Figure 5 As shown, the ink filling cylinder 3 includes a cylindrical main body 3a, which is closed at the lower end and open at the upper end. A vertically arranged slit 3a1 is provided on the front side wall of the main body 3a, and a retaining wall 3b is integrally connected to the front side of the main body 3a, surrounding the outer periphery of the slit 3a1. During operation, the rear part of the graduated wheel 19 is embedded in the retaining wall 3b, and there is a gap between the graduated wheel 19 and the retaining wall 3b, that is, the retaining wall 3b and the graduated wheel 19 do not touch. The ink filling cylinder 3 is a rigid component, and the fact that the ink filling cylinder 3 does not touch the graduated wheel 19 during operation can prevent the graduated wheel 19 from getting stuck or unable to rotate due to the ink filling cylinder 3 touching the graduated wheel 19. The enclosure 3b includes an upper baffle 3b1, a lower baffle 3b2, and two side baffles 3b3. The upper baffle 3b1 is flat and located above the opening 3a1, the lower baffle 3b2 is flat and located below the opening 3a1, and the two side baffles 3b3 are arc-shaped and located on both sides of the opening 3a1. The front end of the upper baffle 3b1 has a downwardly protruding auxiliary baffle 3b4, which is connected to both side baffles 3b3.

[0034] During normal operation, the mounting base 4 is clamped and fixed between the positioning element 6 and the positioning bolt 8, such as... Figure 5 As shown, the scale wheel 19 is close to the ink filling cylinder 3 and its rear side is embedded in the enclosure 3b. During operation, the pneumatic pump 11 draws ink from the ink tank 15 into the ink filling cylinder 3 through the ink filling pipe 12. The ink flows out from the opening 3a1 of the ink filling cylinder 3 and contacts the scale wheel 19. The ink flows into the ink cartridge 2. The pneumatic pump 11 also draws ink from the ink cartridge 2 back into the ink tank 15 to form a circulation. The valve 14 is used to control the flow rate of ink. The return pipe 16 transports the excess ink drawn out by the pneumatic pump 11 back to the ink tank.

[0035] When the scale wheel 19 needs to be replaced, loosen the positioning bolt 8. The hinge 7 rotates downwards under gravity, causing the positioning bolt 8 to move away from the sliding plate 4c. The sliding plate 4c slides backwards, moving the ink cartridge 3 away from the scale wheel 19. After replacing the scale wheel 19, the sliding plate 4c slides forward against the positioning member 6. Then, the hinge 7 is rotated upwards, causing it to abut against the side of the slide rail 5. At this point, the positioning bolt 8 is facing the sliding plate 4c. Tighten the positioning bolt 8 to clamp and fix the sliding plate 4c between the positioning member 6 and the positioning bolt 8. Thus, when replacing the scale wheel 19, the mounting base 4 is unlocked by rotating the positioning bolt 8 and the hinge 7. The mounting base 4 only needs to slide away from the scale wheel 19 without disassembling the mounting base 4 and the ink cartridge 3. After installing the scale wheel 19, the mounting base 4 is positioned by the positioning member 6, eliminating the need to adjust the position of the ink cartridge 3. This makes operation convenient. Therefore, this ink filling mechanism makes replacing the scale wheel 19 easy.

[0036] Example 2

[0037] Based on Embodiment 1, an elastic scraper, such as a rubber sheet or a steel sheet, is fixed at the edge of the enclosure 3b of the ink cylinder 3. During operation, the scraper can be placed against the scale wheel 19 to scrape off excess ink on the scale wheel 19. The ink cylinder 3 is a rigid part, so it remains in a non-attached state with the scale wheel 19 to prevent the scale wheel 19 from getting stuck or jammed and unable to rotate.

[0038] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An inking mechanism of a printing machine, the printing machine comprising a scale wheel (19), the inking mechanism of the printing machine comprising a support (1) and an ink chamber (2), said ink chamber (2) being provided with an inking cylinder (3), characterized in that, The ink cartridge (3) is fixedly connected to a mounting base (4), and the bracket (1) is fixedly connected to a slide rail (5) located on one side of the ink cartridge (2). The mounting base (4) is connected to the slide rail (5) and can slide back and forth. The ink cartridge (3) is located behind the scale wheel (19) and can be close to the scale wheel (19). The bracket (1) is fixedly connected to a positioning component (6) located in front of the mounting base (4). The bracket (1) is hinged to a hinge component (7) located behind the mounting base (4) and can rotate. The hinge component (7) is threadedly connected to a positioning bolt (8). The mounting base (4) can be clamped and fixed between the positioning component (6) and the positioning bolt (8).

2. The inking mechanism of the printing press according to claim 1, characterized in that, The hinge (7) is L-shaped plate. The two ends of the hinge (7) are the hinge end (7a) and the connecting end (7b), respectively. The hinge end (7a) is hinged to the bracket (1), and the connecting end (7b) is connected to the positioning bolt (8). When the positioning bolt (8) clamps the fixed mounting base (4), the connecting end (7b) is higher than the hinge end (7a).

3. The inking mechanism of the printing press according to claim 2, characterized in that, The rear end of the slide rail (5) is located above the hinge end (7a), and the hinge (7) can abut against the side of the slide rail (5) when it swings upward.

4. The inking mechanism of the printing press according to claim 1, characterized in that, The bracket (1) is threaded with a connecting bolt (9), the hinge (7) is fitted on the connecting bolt (9), and a spacer (10) is also fitted on the connecting bolt (9). The spacer (10) is located between the hinge (7) and the bracket (1).

5. The inking mechanism of the printing press according to any one of claims 1-4, characterized in that, The ink cartridge (3) includes a cylindrical main body (3a), the lower end of the main body (3a) is closed and the upper end is open. A vertically arranged slit (3a1) is provided on the front side wall of the main body (3a). A barrier (3b) is integrally connected to the front side of the main body (3a) and surrounds the outer periphery of the slit (3a1). The rear part of the scale wheel (19) can be embedded in the barrier (3b).

6. The inking mechanism of the printing press according to claim 5, characterized in that, The enclosure (3b) includes an upper baffle (3b1), a lower baffle (3b2), and two side baffles (3b3). The upper baffle (3b1) is flat and located above the opening (3a1). The lower baffle (3b2) is flat and located below the opening (3a1). The two side baffles (3b3) are arc-shaped and located on both sides of the opening (3a1).

7. The inking mechanism of the printing press according to claim 6, characterized in that, The front end of the upper baffle (3b1) has a downward protruding additional baffle (3b4), which is connected to both side baffles (3b3).

8. The inking mechanism of the printing press according to any one of claims 1-4, characterized in that, The mounting base (4) includes a horizontal plate (4a), a vertical plate (4b) and a sliding plate (4c). The ink cylinder (3) is fixedly connected to the horizontal plate (4a). The vertical plate (4b) is fixedly connected between the horizontal plate (4a) and the sliding plate (4c). A slider (4d) is fixed on the lower surface of the sliding plate (4c). The slider (4d) is connected to the slide rail (5). The sliding plate (4c) can be clamped and fixed between the positioning member (6) and the positioning bolt (8).

9. The inking mechanism of the printing press according to any one of claims 1-4, characterized in that, The printing press's inking mechanism also includes a pneumatic pump (11), with an inking pipe (12) connected between the outlet end of the pneumatic pump (11) and the upper end of the inking cylinder (3), and a return pipe (13) connected between the inlet end of the pneumatic pump (11) and the ink cartridge (2). A valve (14) is connected to the inking pipe (12), and an ink tank (15) is connected to the return pipe (13). A return pipe (16) is also provided between the ink tank (15) and the pneumatic pump (11).

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